阅读说明：本技术 用于火电联合agc调频的混合储能控制系统及控制方法 (Hybrid energy-storing control system and control method for thermoelectricity joint AGC frequency modulation ) 是由 江卫良 张庆源 陈烨 葛自强 徐威 于 2019-07-25 设计创作，主要内容包括：本发明涉及火电机组辅助调频技术领域,具体涉及一种用于火电联合AGC调频的混合储能控制系统及控制方法。本发明实施例中的用于火电联合AGC调频的混合储能控制系统及控制方法,飞轮储能单元和电池储能单元分别接受飞轮储能控制装置和电池储能控制装置的控制,在控制上解耦,提高整个系统的安全性,同时,混合储能控制装置通过飞轮储能控制装置和电池储能控制装置控制所述飞轮储能单元和所述电池储能单元进行协同工作,充分利用飞轮储能单元的充放电响应速度快、使用寿命长、安全性好等优势和电池储能单元的能量密度高的特性,达到提高AGC联合调频性能综合指标,延长电化学电池的使用寿命,提高系统整体经济性的效果。(The present invention relates to fired power generating units to assist frequency modulation technology field, and in particular to a kind of hybrid energy-storing control system and control method for thermoelectricity joint AGC frequency modulation.The hybrid energy-storing control system and control method for thermoelectricity joint AGC frequency modulation in the embodiment of the present invention, flywheel energy storage unit and battery energy storage unit receive the control of flywheel energy storage control device and battery energy storage control device respectively, it is decoupled in control, improve the safety of whole system, simultaneously, hybrid energy-storing control device controls the flywheel energy storage unit by flywheel energy storage control device and battery energy storage control device and the battery energy storage unit cooperates, make full use of the charge and discharge fast response time of flywheel energy storage unit, long service life, the advantages such as safety is good and the high characteristic of the energy density of battery energy storage unit, reach and improves AGC joint frequency modulation performance overall target, extend the service life of electrochemical cell, the effect of raising system overall economy quality.)

1. a kind of hybrid energy-storing control method for thermoelectricity joint AGC frequency modulation, is applied to joint energy storage frequency modulation system, described Closing energy storage frequency modulation system includes fired power generating unit and mixed energy storage system, and the mixed energy storage system includes flywheel energy storage unit and electricity Pond energy-storage units, which is characterized in that the hybrid energy-storing control method includes:

AGC command information, the unit output value of fired power generating unit, the data information of flywheel energy storage unit and battery storage are obtained in real time The data information of energy unit；

According to the AGC command information, the unit output value, the flywheel energy storage unit data information and the battery The data information of energy-storage units judges whether the mixed energy storage system meets the condition for participating in AGC joint frequency modulation；

If so, calculating the power generating value of the mixed energy storage system according to the AGC command information and the unit output value；

Combine the frequency modulation stage according to the AGC command information and unit output value matching AGC, obtains matching result；

Corresponding predetermined control strategy is obtained according to the matching result, and is stored up according to the predetermined control strategy and the mixing The power generating value of energy system determines the power generating value of the flywheel energy storage unit and the power generating value of the battery energy storage unit, generates and corresponds to Control instruction, and collaboration work is carried out according to the control instruction control flywheel energy storage unit and the battery energy storage unit Make.

2. hybrid energy-storing control method according to claim 1, which is characterized in that it is described according to the AGC command information, The data information of the unit output value, the data information of the flywheel energy storage unit and the battery energy storage unit judges institute State mixed energy storage system whether meet participate in AGC joint frequency modulation condition the step of after, further includes:

If it is not, be modified according to working condition of the data information of the flywheel energy storage unit to the flywheel energy storage unit, It is modified according to working condition of the data information of the battery energy storage unit to the battery energy storage unit.

3. hybrid energy-storing control method according to claim 1, which is characterized in that it is described according to the AGC command information, The data information of the unit output value, the data information of the flywheel energy storage unit and the battery energy storage unit judges institute State mixed energy storage system whether meet participate in AGC joint frequency modulation condition it is further comprising the steps of:

Judge whether the AGC command information that this is obtained is consistent with the AGC command information that last time obtains；

Judge whether the fired power generating unit is in default AGC response range according to the unit output value；

Judge whether the flywheel energy storage unit is in default AGC response range according to the data information of the flywheel energy storage unit It is interior；

Judge whether the battery energy storage unit is in default AGC response range according to the data information of the battery energy storage unit It is interior；

When the AGC command information that AGC command information and last time that this is obtained obtain is inconsistent, and it is the fired power generating unit, described When flywheel energy storage unit and the battery energy storage unit are in default AGC response range, the mixed energy storage system is judged Meet the condition for participating in AGC joint frequency modulation；Otherwise, it is unsatisfactory for.

4. hybrid energy-storing control method according to claim 1, which is characterized in that described according to the AGC command information With the unit output value calculate mixed energy storage system power generating value include:

The target power generating value of joint energy storage frequency modulation system is determined according to the AGC command information；

The mixed energy storage system is calculated according to the target power generating value of the joint energy storage frequency modulation system and the unit output value Power generating value, the power generating value of the mixed energy storage system is the difference of the target power generating value and the unit output value.

5. hybrid energy-storing control method according to claim 1, which is characterized in that the AGC joint frequency modulation stage includes: First stage, second stage and phase III,

The first stage are as follows: from receiving AGC command information, to monitoring the unit output value in default initial power Stop when except threshold range；

The second stage are as follows: from monitoring the unit output value except default initial power threshold range, to prison It measures when the unit output value enters goal-selling power threshold range and stops；

The phase III are as follows: from monitoring that the unit output value enters goal-selling power threshold range, to reception Stop when to new AGC command information.

6. hybrid energy-storing control method according to claim 5, which is characterized in that the power generating value of the mixed energy storage system For the power generating value of the flywheel energy storage unit and the sum of the power generating value of the battery energy storage unit, the predetermined control strategy includes First strategy, the second strategy and third strategy, the data information of the flywheel energy storage unit include energy storage state of charge and specified Power；It is described that corresponding predetermined control strategy is obtained according to the matching result, and according to the predetermined control strategy and described The power generating value of mixed energy storage system determines the power generating value of the flywheel energy storage unit and the power generating value of the battery energy storage unit, raw It is assisted at corresponding control instruction, and according to the control instruction control flywheel energy storage unit and the battery energy storage unit Include: with work

When the matching result is the first stage, the first strategy is executed, institute is controlled according to the rated power of flywheel energy storage unit State the power generating value of flywheel energy storage unit, power generating value and institute of the power generating value of the battery energy storage unit for the mixed energy storage system State the difference of the power generating value of flywheel energy storage unit；

When the matching result is second stage, the second strategy is executed, according to the energy storage electricity shape of the flywheel energy storage unit State controls the power generating value of the flywheel energy storage unit, and the power generating value of the battery energy storage unit is going out for the mixed energy storage system The power generating value difference of force value and the flywheel energy storage unit；

When the matching result is the phase III, third strategy is executed, controls the power generating value of the flywheel energy storage unit as institute State the target power generating value of joint energy storage frequency modulation system and the difference of the unit output value, the power generating value of the battery energy storage unit It is zero.

7. a kind of hybrid energy-storing control device for thermoelectricity joint AGC frequency modulation, which is characterized in that the hybrid energy-storing control dress It sets and includes:

Data acquisition module, for obtaining the unit output value of AGC command information, fired power generating unit, flywheel energy storage unit in real time The data information of data information and battery energy storage unit；

Judgment module is connect with the data acquisition module, for according to the AGC command information, the unit output value, institute The data information of the data information and battery energy storage unit of stating flywheel energy storage unit judges whether the mixed energy storage system is full Foot participates in the condition of AGC joint frequency modulation；

Computing module is separately connected with the judgment module and the data acquisition module, in the mixed energy storage system When meeting the condition for participating in AGC joint frequency modulation, hybrid energy-storing system is calculated according to the AGC command information and the unit output value The power generating value of system；

Matching module is connect with the data acquisition module, for according to the AGC command information and the unit output value Combine the frequency modulation stage with AGC, obtains matching result；

Control module is separately connected with the computing module, the matching module, is corresponded to for being obtained according to the matching result Predetermined control strategy, and determine that the flywheel stores up according to the power generating value of the predetermined control strategy and the mixed energy storage system The energy power generating value of unit and the power generating value of the battery energy storage unit generate corresponding control instruction, and according to the control instruction It controls the flywheel energy storage unit and the battery energy storage unit cooperates.

8. a kind of hybrid energy-storing control system for thermoelectricity joint AGC frequency modulation, which is characterized in that hybrid energy-storing control system System includes: hybrid energy-storing control device as claimed in claim 7, RTU, DCS, flywheel energy storage control device and battery energy storage control Device processed；

The hybrid energy-storing control device respectively with the RTU, the DCS, the flywheel energy storage control device and the battery Energy storage control device connection, the RTU are connect with grid dispatching center, the flywheel energy storage control device and flywheel energy storage unit Connection, the battery energy storage control device are connect with battery energy storage unit, and the DCS connects with the RTU, fired power generating unit respectively It connects.

9. a kind of computer equipment characterized by comprising at least one processor, at least one processor and be stored in Computer program instructions in the memory realize such as right when the computer program instructions are executed by the processor It is required that described in any one of 1 to 6 the step of hybrid energy-storing control method.

10. a kind of computer readable storage medium, is stored thereon with computer program instructions, which is characterized in that the computer The step of hybrid energy-storing control method described in any one of claims 1 to 6 is realized when program instruction is executed by processor.

Technical field

The present invention relates to fired power generating units to assist frequency modulation technology field, and in particular to a kind of to combine AGC frequency modulation for thermoelectricity Hybrid energy-storing control system and control method.

Background technique

The stable operation of electric system needs that Generation Side and the realtime power of electricity consumption side is kept to balance, and grid dispatching center is logical The active power output that Automatic Generation Control (AGC) system to adjust variable frequency power source in power grid in real time is crossed, is realized to mains frequency and connection The control of winding thread power solves the problems, such as in regional power grid random unbalanced power in short-term, this proposes sound to variable frequency power source performance The technical property requirements such as speed is fast, regulations speed is fast, degree of regulation is high, power regulation direction frequent transitions are answered, and are examined. Power grid AGC frequency modulation function is mainly provided by the normal power supplies including water power, Gas Generator Set and fired power generating unit.Due to these Power-supply system all has response inertia, and non-renewable energy, which is converted into electric energy, will undergo a series of complex process, especially thermal motor The AGC frequency modulation performance of group is compared with power grid expectation, and there are also larger gaps, and fired power generating unit is due to by conversion process of energy and climbing speed The technical factors limitations such as rate is slow, showing that the response time is long, regulations speed is slow, degree of regulation is poor in AGC frequency-modulating process etc. asks Topic.

In recent years, with the progress of energy storage technology, improve fired power generating unit using the characteristic of energy-storage system fast charging and discharging The performance of AGC frequency modulation is developed rapidly using the mode that energy-storage system and fired power generating unit carry out joint AGC frequency modulation, is occurred Many application item case.The country generallys use lithium ion battery energy storage system to participate in fired power generating unit joint AGC at present Frequency modulation, lithium ion battery energy storage system generally use the charge-discharge magnification of 2C.In the operational process of project, lithium is gradually exposed The problems such as ion battery cycle life is short, safety is low.

In consideration of it, overcoming the above defect in the prior art, a kind of new mixing for thermoelectricity joint AGC frequency modulation is provided Energy storage control system and control method become this field technical problem urgently to be resolved.

Summary of the invention

It is a kind of for thermoelectricity joint AGC frequency modulation it is an object of the invention in view of the above drawbacks of the prior art, provide Hybrid energy-storing control system and control method.

The purpose of the present invention can be realized by technical measures below:

The embodiment provides a kind of hybrid energy-storing control methods for thermoelectricity joint AGC frequency modulation, are applied to Joint energy storage frequency modulation system, the joint energy storage frequency modulation system include fired power generating unit and mixed energy storage system, the hybrid energy-storing System includes flywheel energy storage unit and battery energy storage unit, which is characterized in that the hybrid energy-storing control method includes:

The data information and electricity of AGC command information, the unit output value of fired power generating unit, flywheel energy storage unit are obtained in real time The data information of pond energy-storage units；

According to the AGC command information, the unit output value, the data information of the flywheel energy storage unit and described The data information of battery energy storage unit judges whether the mixed energy storage system meets the condition for participating in AGC joint frequency modulation；

If so, calculating the power generating value of the mixed energy storage system according to the AGC command information and the unit output value；

Combine the frequency modulation stage according to the AGC command information and unit output value matching AGC, obtains matching result；

Corresponding predetermined control strategy is obtained according to the matching result, and according to the predetermined control strategy and described mixed The power generating value for closing energy-storage system determines the power generating value of the flywheel energy storage unit and the power generating value of the battery energy storage unit, generates Corresponding control instruction, and cooperateed with according to the control instruction control flywheel energy storage unit and the battery energy storage unit Work.

According to one embodiment of present invention, it is described according to the AGC command information, the unit output value, it is described fly The data information of the data information and the battery energy storage unit of taking turns energy-storage units judges whether the mixed energy storage system is full Foot participated in after the step of condition of AGC joint frequency modulation, further includes:

If it is not, being repaired according to working condition of the data information of the flywheel energy storage unit to the flywheel energy storage unit Just, it is modified according to working condition of the data information of the battery energy storage unit to the battery energy storage unit.

According to one embodiment of present invention, it is described according to the AGC command information, the unit output value, it is described fly The data information of the data information and the battery energy storage unit of taking turns energy-storage units judges whether the mixed energy storage system is full The condition that foot participates in AGC joint frequency modulation is further comprising the steps of:

Judge whether the AGC command information that this is obtained is consistent with the AGC command information that last time obtains；

Judge whether the fired power generating unit is in default AGC response range according to the unit output value；

Judge whether the flywheel energy storage unit is in default AGC response according to the data information of the flywheel energy storage unit In range；

Judge whether the battery energy storage unit is in default AGC response according to the data information of the battery energy storage unit In range；

When the AGC command information that AGC command information and last time that this is obtained obtain is inconsistent, and the fired power generating unit, When the flywheel energy storage unit and the battery energy storage unit are in default AGC response range, the hybrid energy-storing is judged System meets the condition for participating in AGC joint frequency modulation；Otherwise, it is unsatisfactory for.

According to one embodiment of present invention, described calculated according to the AGC command information and the unit output value is mixed Close energy-storage system power generating value include:

The target power generating value of joint energy storage frequency modulation system is determined according to the AGC command information；

The hybrid energy-storing is calculated according to the target power generating value of the joint energy storage frequency modulation system and the unit output value The power generating value of system, the power generating value of the mixed energy storage system are the difference of the target power generating value and the unit output value.

According to one embodiment of present invention, the AGC joint frequency modulation stage includes: first stage, second stage and the Three stages,

The first stage are as follows: from receiving AGC command information, to monitoring the unit output value default initial Stop when except power threshold range；

The second stage are as follows: from monitoring the unit output value except default initial power threshold range, To stopping when monitoring that the unit output value enters goal-selling power threshold range；

The phase III are as follows: from monitoring that the unit output value enters goal-selling power threshold range, arrive Stop when receiving new AGC command information.

According to one embodiment of present invention, the power generating value of the mixed energy storage system is going out for the flywheel energy storage unit The sum of the power generating value of force value and the battery energy storage unit, the predetermined control strategy include the first strategy, the second strategy and the Three strategies, the data information of the flywheel energy storage unit includes energy storage state of charge and rated power；It is described according to the matching As a result corresponding predetermined control strategy is obtained, and true according to the power generating value of the predetermined control strategy and the mixed energy storage system The power generating value of the fixed flywheel energy storage unit and the power generating value of the battery energy storage unit, generate and correspond to control instruction, and according to The control instruction controls the flywheel energy storage unit and the battery energy storage unit cooperate and includes:

When the matching result is the first stage, the first strategy is executed, according to the rated power control of flywheel energy storage unit The power generating value of the flywheel energy storage unit is made, the power generating value of the battery energy storage unit is the power generating value of the mixed energy storage system With the difference of the power generating value of the flywheel energy storage unit；

When the matching result is second stage, the second strategy is executed, according to the energy storage of flywheel energy storage unit electricity Amount state controls the power generating value of the flywheel energy storage unit, and the power generating value of the battery energy storage unit is the mixed energy storage system Power generating value and the flywheel energy storage unit power generating value difference；

When the matching result is the phase III, third strategy is executed, the power generating value of the flywheel energy storage unit is controlled For the target power generating value of the joint energy storage frequency modulation system and the difference of the unit output value, the battery energy storage unit goes out Force value is zero.

It is described mixed the embodiment provides a kind of hybrid energy-storing control device for thermoelectricity joint AGC frequency modulation Closing energy storage control device includes:

Data acquisition module, for obtaining unit output value, the flywheel energy storage list of AGC command information, fired power generating unit in real time The data information of member and the data information of battery energy storage unit；

Judgment module is connect with the data acquisition module, for according to the AGC command information, the unit output The data information of value, the data information of the flywheel energy storage unit and battery energy storage unit judges that the mixed energy storage system is It is no to meet the condition for participating in AGC joint frequency modulation；

Computing module is separately connected with the judgment module and the data acquisition module, in the hybrid energy-storing When system meets the condition for participating in AGC joint frequency modulation, mixing storage is calculated according to the AGC command information and the unit output value The power generating value of energy system；

Matching module is connect with the data acquisition module, for according to the AGC command information and the unit output Value matching AGC combines the frequency modulation stage, obtains matching result；

Control module is separately connected with the computing module, the matching module, for being obtained according to the matching result Corresponding predetermined control strategy, and described fly is determined according to the power generating value of the predetermined control strategy and the mixed energy storage system The power generating value of energy-storage units and the power generating value of the battery energy storage unit are taken turns, generates corresponding control instruction, and according to the control Instruction controls the flywheel energy storage unit and the battery energy storage unit cooperates.

It is described mixed the embodiment provides a kind of hybrid energy-storing control system for thermoelectricity joint AGC frequency modulation Closing energy storage control system includes: the hybrid energy-storing control device, RTU, DCS, flywheel energy storage control device and battery energy storage Control device；

The hybrid energy-storing control device respectively with the RTU, the DCS, the flywheel energy storage control device and described The connection of battery energy storage control device, the RTU are connect with grid dispatching center, the flywheel energy storage control device and flywheel energy storage Unit connection, the battery energy storage control device connect with battery energy storage unit, the DCS respectively with the RTU, fired power generating unit Connection.

The embodiment provides a kind of computer equipments, comprising: at least one processor, at least one processor And the computer program instructions of storage in the memory, when the computer program instructions are executed by the processor The step of realizing the hybrid energy-storing control method.

The embodiment provides a kind of computer readable storage mediums, are stored thereon with computer program instructions, The step of hybrid energy-storing control method is realized when the computer program instructions are executed by processor.

Hybrid energy-storing control system and control method for thermoelectricity joint AGC frequency modulation of the invention, flywheel energy storage unit The control for receiving flywheel energy storage control device and battery energy storage control device respectively with battery energy storage unit, decouples in control, The safety of whole system is improved, meanwhile, hybrid energy-storing control device is controlled by flywheel energy storage control device and battery energy storage Device controls the flywheel energy storage unit and the battery energy storage unit cooperates, and makes full use of flywheel energy storage unit The advantages such as charge and discharge fast response time, long service life, safety be good and the high characteristic of the energy density of battery energy storage unit, reach Combine frequency modulation performance overall target to AGC is improved, extends the service life of electrochemical cell, improve the effect of system overall economy quality Fruit.

Detailed description of the invention

Fig. 1 is a kind of flow diagram of embodiment of hybrid energy-storing control method of the invention.

Fig. 2 is the flow diagram of step S3 in hybrid energy-storing control method of the invention.

Fig. 3 is the flow diagram of step S2 in hybrid energy-storing control method of the invention.

Fig. 4 is the flow diagram of another embodiment of hybrid energy-storing control method of the invention.

Fig. 5 is a kind of schematic diagram of embodiment of flywheel energy storage unit and battery energy storage unit matching frequency modulation of the invention.

Fig. 6 is the AGC joint frequency-modulating process of one embodiment of the present of invention.

Fig. 7 is the structural schematic diagram of hybrid energy-storing control device of the invention.

Fig. 8 is the structural schematic diagram of judgment module in hybrid energy-storing control device of the invention.

Fig. 9 is the structural schematic diagram of computing module in hybrid energy-storing control device of the invention.

Figure 10 is the structural schematic diagram of hybrid energy-storing control system of the invention.

Specific embodiment

In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation Invention is further described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, It is not intended to limit the present invention.

In order to keep the narration of this disclosure more detailed with it is complete, below for embodiments of the present invention and specific real It applies example and proposes illustrative description；But this not implements or uses the unique forms of the specific embodiment of the invention.Embodiment In cover multiple specific embodiments feature and to construction with operate these specific embodiments method and step it is suitable with it Sequence.However, can also reach identical or impartial function and sequence of steps using other specific embodiments.

Embodiment of the invention discloses a kind of hybrid energy-storing control methods for thermoelectricity joint AGC frequency modulation, are applied to Joint energy storage frequency modulation system, the joint energy storage frequency modulation system include fired power generating unit and mixed energy storage system, mixed energy storage system Energy can be stored when network load is low, exports energy when network load is high, in the embodiment of the present invention, mixed Energy supplement source of the energy-storage system as fired power generating unit is closed, an energy adjustment is played the role of.Further, the mixing Energy-storage system includes flywheel energy storage unit and battery energy storage unit.Fig. 1 shows a kind of mixing for thermoelectricity joint AGC frequency modulation Energy storage control method, referring to Figure 1, which includes:

Step S1: AGC command information, the unit output value of fired power generating unit, the data of flywheel energy storage unit letter are obtained in real time The data information of breath and battery energy storage unit.

In the present embodiment, AGC (Automatic Gain Control, Automatic Generation Control) command information is RTU The command information that the slave grid dispatching center of (Remote Terminal Unit, remote measurement and control terminal) forwarding issues, AGC instruction The fired power generating unit active system that exports to respond the variation of load of the information for regulating station, wherein AGC command information limit The power generating value of fixed joint energy storage frequency modulation system is target power generating value.

Further, the data information of flywheel energy storage unit includes but is not limited to energy storage state of charge, rated power, SOC Value, the power rating of energy accumulation current converter and self-test state, the data information of battery energy storage unit include energy storage state of charge, SOC value, the power rating of energy accumulation current converter and self-test state.

Step S2: according to the AGC command information, the unit output value, the flywheel energy storage unit data information And the data information of the battery energy storage unit judges whether the mixed energy storage system meets the item for participating in AGC joint frequency modulation Part.

If so, executing step S3: calculating the hybrid energy-storing system according to the AGC command information and the unit output value The power generating value of system.

Further, Fig. 2 is referred to, step S3 is further comprising the steps of:

Step S31: the target power generating value of joint energy storage frequency modulation system is determined according to the AGC command information；

Step S32: according to the target power generating value of the joint energy storage frequency modulation system and unit output value calculating The power generating value of mixed energy storage system, the power generating value of the mixed energy storage system are that the target of the joint energy storage frequency modulation system is contributed The difference of value and the unit output value.

If it is not, executing step S4: according to the data information of the flywheel energy storage unit to the work of the flywheel energy storage unit It is modified as state, is carried out according to working condition of the data information of the battery energy storage unit to the battery energy storage unit Amendment.

Such as: low power charge and discharge are carried out by control flywheel energy storage unit, make SOC value close to 50%, for next time It participates in AGC joint frequency modulation to be ready, low power charge and discharge is carried out by control battery energy storage unit, keep SOC value close 50%, it is ready to participate in AGC joint frequency modulation next time.

Further, Fig. 3 is referred to, step S2 is further comprising the steps of:

Step S21: judge whether the AGC command information that this is obtained is consistent with the AGC command information that last time obtains.

Step S22: judge whether fired power generating unit is in default AGC response range according to the unit output value.

Step S23: judge whether the flywheel energy storage unit is in pre- according to the data information of the flywheel energy storage unit If in AGC response range.

If so, flywheel energy storage unit participates in this AGC joint frequency modulation, if it is not, then flywheel energy storage unit is not involved in this AGC combines frequency modulation, generates revision directive, and control flywheel energy storage unit carries out low power charge and discharge, makes SOC value close to 50%, It is ready to participate in AGC joint frequency modulation next time.

Step S24: judge whether the battery energy storage unit is in pre- according to the data information of the battery energy storage unit If in AGC response range.

If so, battery energy storage unit participates in this AGC joint frequency modulation, if it is not, then battery energy storage unit is not involved in this AGC combines frequency modulation, generates revision directive, and control battery energy storage unit carries out low power charge and discharge, makes SOC value close to 50%, It is ready to participate in AGC joint frequency modulation next time.

In the present embodiment, energy supplement source of the mixed energy storage system as fired power generating unit is in default in fired power generating unit When AGC response range, mixed energy storage system responds the operating status of fired power generating unit, therefore, is executing step S21, step After rapid S22, step S23 and step S24 is executed, step S23 and step S24 do not limit sequencing.As the AGC that this is obtained The AGC command information that command information and last time obtain is inconsistent, and (i.e. this AGC command information obtained is that new AGC instruction is believed Breath), and the fired power generating unit, the flywheel energy storage unit and the battery energy storage unit are in default AGC response range When, judge that the mixed energy storage system meets the condition for participating in AGC joint frequency modulation；Otherwise, it is unsatisfactory for.

Step S5: the frequency modulation stage is combined according to the AGC command information and unit output value matching AGC, is obtained With result；Step S5 is executed after step s 3.

In one embodiment, the AGC joint frequency modulation stage includes: first stage, second stage and phase III.

The first stage are as follows: from receiving AGC command information, to monitoring the unit output value default initial Stop when except power threshold range；

The second stage are as follows: from monitoring the unit output value except default initial power threshold range, To stopping when monitoring that the unit output value enters goal-selling power threshold range；

The phase III are as follows: from monitoring that the unit output value enters goal-selling power threshold range, arrive Stop when receiving new AGC command information.

Default initial power threshold value is the adjusting dead zone range of initial unit output value, and goal-selling power threshold is target The adjusting dead zone range of power generating value.

Step S6: corresponding predetermined control strategy is obtained according to the matching result, and according to the predetermined control strategy The power generating value of the flywheel energy storage unit and going out for the battery energy storage unit are determined with the power generating value of the mixed energy storage system Force value generates corresponding control instruction, and controls the flywheel energy storage unit and the battery energy storage list according to the control instruction Member cooperates.Step S6 is executed after step s 5.

Further, the predetermined control strategy includes the first strategy, the second strategy and third strategy, the hybrid energy-storing The power generating value of system is the power generating value of the flywheel energy storage unit and the sum of the power generating value of the battery energy storage unit.Specifically, Fig. 4 and Fig. 5 are referred to, Fig. 4 is the flow chart of hybrid energy-storing control method of the invention, and Fig. 5 is flywheel energy storage unit and battery The schematic diagram of energy-storage units cooperation frequency modulation.

When the matching result is the first stage, the first strategy is executed, according to the rated power control of flywheel energy storage unit The power generating value of the flywheel energy storage unit is made, the power generating value of the battery energy storage unit is the power generating value of the mixed energy storage system With the difference of the power generating value of the flywheel energy storage unit.

In the first stage, unit output value is also within default initial power threshold range, at this point, mixed energy storage system Power generating value is maximum, wherein flywheel energy storage unit is contributed by full power, and battery energy storage unit undertakes the power output of remainder.

When the matching result is second stage, the second strategy is executed, according to the energy storage of flywheel energy storage unit electricity Amount state controls the power generating value of the flywheel energy storage unit, and the power generating value of the battery energy storage unit is the mixed energy storage system Power generating value and the flywheel energy storage unit power generating value difference.

In second stage, unit output value is stepped up, and the power generating value of mixed energy storage system gradually reduces, wherein flywheel Energy-storage units are contributed according to energy storage state of charge, and the power generating value of flywheel energy storage unit gradually reduces, until be zero, battery energy storage list Member undertakes the power output of remainder.

When the matching result is the phase III, third strategy is executed, controls the power generating value of flywheel energy storage unit as institute State the target power generating value of joint energy storage frequency modulation system and the difference of the unit output value, the power generating value of the battery energy storage unit It is zero.

In the phase III, unit output value has entered within the scope of goal-selling power threshold, near target power generating value Low amplitude vibrations, the fast response characteristic that flywheel energy storage unit can use flywheel energy storage carry out the inclined of Contrary compensation unit output value Difference improves degree of regulation.Specifically, it when unit output value is greater than target power generating value, controls the flywheel energy storage unit and carries out Charging, charge power are the difference of the unit output value and the target power generating value；When unit output value is contributed less than target It when value, controls the flywheel energy storage unit and discharges, discharge power is the target power generating value and the unit output value Difference.In the phase III, battery energy storage unit does not need to carry out charge and discharge, extends the service life of battery energy storage unit.

Power generating value and battery energy storage unit of the hybrid energy-storing control method of the embodiment of the present invention to flywheel energy storage unit Power generating value carry out Collaborative Control, respectively control flywheel energy storage unit and battery energy storage unit charging and discharging state so that frequency modulation Composite of performance index and overall economy quality are optimal.

Fig. 6 is referred to, Fig. 6 is that the AGC of one embodiment combines frequency-modulating process.Pmin is that the adjustable lower limit of fired power generating unit goes out Force value, Pmax are the adjustable upper limit power generating values of fired power generating unit.The process that fired power generating unit responds AGC instruction is as follows: before the T0 moment, Near power generating value P1, T0 moment, fired power generating unit receives AGC command information for fired power generating unit stable operation, increases from power generating value P1 It is added to target power generating value P2, fired power generating unit unit starts to increase power output, and the T0 moment to T1 moment is the adjusting dead zone of P1, AGC connection The conjunction frequency modulation stage is the first stage, enters the adjusting dead zone of target power generating value P2 for the first time to the T2 moment, the T1 moment to T2 moment, The AGC joint frequency modulation stage is second stage, then the but small oscillations near P2, and gradually stable operation is near P2, until when T3 It carves, fired power generating unit receives new AGC command information, begins to respond to new instruction, T2 moment to T3 moment, and AGC combines frequency modulation Stage is the phase III.

It is right in terms of regulations speed, degree of regulation, the response time three after the every secondary response AGC command information of fired power generating unit The effect of unit response AGC command information carries out evaluation measurement, and forms frequency modulation performance overall target K value.

The embodiment provides a kind of hybrid energy-storing control devices for thermoelectricity joint AGC frequency modulation, refer to Fig. 7, the hybrid energy-storing control device include:

Data acquisition module 10, for obtaining AGC command information, the unit output value of fired power generating unit, flywheel energy storage in real time The data information of unit and the data information of battery energy storage unit；Data acquisition module 10 executes above-mentioned hybrid energy-storing controlling party The step S1 of method, step S1 have been described in detail aforementioned, and details are not described herein.

Judgment module 20 is connect with the data acquisition module 10, for according to the AGC command information, the unit The data information of power generating value, the data information of the flywheel energy storage unit and battery energy storage unit judges the hybrid energy-storing system Whether system meets the condition for participating in AGC joint frequency modulation；Judgment module 20 executes the step S2 of above-mentioned hybrid energy-storing control method, step Rapid S2 has been described in detail aforementioned, and details are not described herein.

Computing module 30 is separately connected with the judgment module 20 and the data acquisition module 10, for described mixed When closing the condition of energy-storage system satisfaction participation AGC joint frequency modulation, calculated according to the AGC command information and the unit output value The power generating value of mixed energy storage system；Computing module 30 executes the step S3 of above-mentioned hybrid energy-storing control method, and step S3 is aforementioned It has been be described in detail that, details are not described herein.

Matching module 40 is connect with the data acquisition module 10, for according to the AGC command information and the unit Power generating value matches AGC and combines the frequency modulation stage, obtains matching result；Matching module 40 executes the step of above-mentioned hybrid energy-storing control method Rapid S5, step S5 have been described in detail aforementioned, and details are not described herein.

Control module 50 is separately connected with the computing module 30 and the matching module 40, for according to the matching As a result corresponding predetermined control strategy is obtained, and true according to the power generating value of the predetermined control strategy and the mixed energy storage system The power generating value of the fixed flywheel energy storage unit and the power generating value of the battery energy storage unit, generate and correspond to control instruction, and according to The control instruction controls the flywheel energy storage unit and the battery energy storage unit cooperates.Control module 50 executes The step S6 of above-mentioned hybrid energy-storing control method, step S6 have been described in detail aforementioned, and details are not described herein.

Further, the hybrid energy-storing control device includes: correction module (not shown), with the judgment module 20 and the data acquisition module 10 be separately connected, participate in AGC joint frequency modulation for being unsatisfactory in the mixed energy storage system When condition, it is modified according to working condition of the data information of the flywheel energy storage unit to the flywheel energy storage unit, root The working condition of the battery energy storage unit is modified according to the data information of the battery energy storage unit, to participate in next time AGC joint frequency modulation is prepared.Correction module executes the step S4 of above-mentioned hybrid energy-storing control method, step S4 it is aforementioned in detail Description, details are not described herein.

Further, Fig. 8 is referred to, judgment module 20 includes:

Judging unit 21 is instructed, the AGC instruction for judging whether the AGC command information that this is obtained obtained with last time is believed Breath is consistent；Instruction judging unit 21 executes the step S21 of above-mentioned hybrid energy-storing control method, and step S21 has been retouched in detail aforementioned It states, details are not described herein.

Unit judging unit 22 judges whether fired power generating unit is in pre- for the unit output value according to the fired power generating unit If in AGC response range；Unit judging unit 22 executes the step S22 of above-mentioned hybrid energy-storing control method, and step S22 is aforementioned It has been be described in detail that, details are not described herein.

Flywheel energy storage judging unit 23, for judging the flywheel energy storage according to the data information of the flywheel energy storage unit Whether unit is in default AGC response range.Flywheel energy storage judging unit 23 executes the step of above-mentioned hybrid energy-storing control method Rapid S23, step S23 have been described in detail aforementioned, and details are not described herein.

Battery energy storage judging unit 24, for judging the battery energy storage according to the data information of the battery energy storage unit Whether unit is in default AGC response range, and battery energy storage judging unit 24 executes the step of above-mentioned hybrid energy-storing control method Rapid S24, step S24 have been described in detail aforementioned, and details are not described herein.

This AGC command information obtained and the AGC command information that last time obtains are inconsistent, and the fired power generating unit, institute It states flywheel energy storage unit and when the battery energy storage unit is in default AGC response range, judges the hybrid energy-storing system System meets the condition for participating in AGC joint frequency modulation；Otherwise, it is unsatisfactory for

Further, Fig. 9 is referred to, computing module 30 includes:

Target power generating value acquiring unit 31: for determining the mesh of joint energy storage frequency modulation system according to the AGC command information Mark force value；Target power generating value acquiring unit 31 executes the step S31 of above-mentioned hybrid energy-storing control method, and step S31 is aforementioned It has been be described in detail that, details are not described herein.

The power generating value acquiring unit 32 of mixed energy storage system: for being contributed according to the target of the joint energy storage frequency modulation system Value and the unit output value calculate the power generating value of the mixed energy storage system, and the power generating value of the mixed energy storage system is described The difference of the target power generating value of joint energy storage frequency modulation system and the unit output value, the power generating value of mixed energy storage system obtain single Member 32 executes the step S32 of above-mentioned hybrid energy-storing control method, and step S32 has been described in detail aforementioned, and details are not described herein.

The embodiment provides a kind of hybrid energy-storing control systems for thermoelectricity joint AGC frequency modulation, refer to Figure 10, the hybrid energy-storing control system include: hybrid energy-storing control device 1, RTU2, DCS (Distributed Control System, dcs) 3, flywheel energy storage control device 4 and battery energy storage control device 5, the hybrid energy-storing control Device 1 connects with the RTU2, the DCS3, the flywheel energy storage control device 4 and the battery energy storage control device 5 respectively It connects, the RTU2 is connect with grid dispatching center 6, and the flywheel energy storage control device 4 is connect with flywheel energy storage unit 7, described Battery energy storage control device 5 is connect with battery energy storage unit 8, and the DCS3 is connect with the RTU2, fired power generating unit, the mixing Energy storage control device 1 is described in detail aforementioned, and details are not described herein.

Specifically, flywheel energy storage unit 7 and battery energy storage unit 8 form mixed energy storage system, and the RTU2 receives electricity When netting the AGC command information that control centre 6 is sent, AGC command information is forwarded to the hybrid energy-storing control device 1 and described DCS3, the DCS3 are based on the AGC command information and control unit output value, and the unit output value of the fired power generating unit is sent To the hybrid energy-storing control device 1, the hybrid energy-storing control device 1 determines that target is contributed according to the AGC command information Value, and when mixed energy storage system meets the condition for participating in AGC joint frequency modulation, calculate the difference of target power generating value and unit output value Value, obtains the power generating value of mixed energy storage system, then, hybrid energy-storing control device 1 goes out according to AGC command information and the unit Force value matches current AGC and combines the frequency modulation stage, obtains corresponding predetermined control strategy according to matching result, and according to described default The power generating value of control strategy and the mixed energy storage system determine the flywheel energy storage unit 7 power generating value and the battery energy storage The power generating value of unit 8, generates corresponding control instruction, and controls the flywheel energy storage unit 7 and described according to the control instruction Battery energy storage unit 8 cooperates.

The embodiment provides a kind of computer equipments, comprising: at least one processor, at least one processor And the computer program instructions of storage in the memory, when the computer program instructions are executed by the processor The step of realizing the hybrid energy-storing control method.

Wherein, processor can also be known as CPU (Central Processing Unit, central processing unit).Processor It may be a kind of IC chip, the processing capacity with signal.Processor can also be general processor, at digital signal It manages device (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other programmable logic device, divide Vertical door or transistor logic, discrete hardware components.General processor can be microprocessor or the processor can also To be any conventional processor etc..Memory, which is stored with, can be realized the computer program of above-mentioned hybrid energy-storing control method and refers to It enables.

The embodiment provides a kind of computer readable storage mediums, are stored thereon with computer program instructions, The step of hybrid energy-storing control method is realized when the computer program instructions are executed by processor.

In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, module or list Member division, only a kind of logical function partition, there may be another division manner in actual implementation, for example, multiple modules or Person's unit can be combined or can be integrated into another system, or some features can be ignored or not executed.

In addition, each functional unit in various embodiments of the present invention can integrate in one processing unit, it is also possible to Each unit physically exists alone, and can also be integrated in one unit with two or more units.Above-mentioned integrated unit Both it can take the form of hardware realization, can also realize in the form of software functional units.

The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.