阅读说明：本技术 新能源场站的批量控制方法、集控系统和通信网关机 (Batch control method and centralized control system for new energy station and communication gateway machine ) 是由 黄树帮 于 2018-06-20 设计创作，主要内容包括：本发明提供一种能够确保新能源场站中远程批量控制的安全性的高效的批量控制方法、集控系统和通信网关机。批量控制方法包括：选择目标新能源场站中待批量控制的设备序列；通过针对所选择的设备序列进行安全闭锁逻辑校验来实现批量控制的预置,以确定该批量控制操作的安全性；以及在所述批量控制的预置成功的情况下,执行所选择的设备序列的批量控制。(The invention provides an efficient batch control method, a centralized control system and a communication gateway machine which can ensure the safety of remote batch control in a new energy station. The batch control method comprises the following steps: selecting an equipment sequence to be controlled in batches in a target new energy station; presetting batch control is realized by carrying out safety locking logic verification on the selected equipment sequence so as to determine the safety of the batch control operation; and executing the batch control of the selected equipment sequence under the condition that the preset of the batch control is successful.)

1. A batch control method for new energy stations is characterized by comprising the following steps:

selecting an equipment sequence to be controlled in batches in a target new energy station;

presetting batch control is realized by carrying out safety locking logic verification on the selected equipment sequence so as to determine the safety of the batch control operation; and

and executing the batch control of the selected equipment sequence under the condition that the preset of the batch control is successful.

2. The method of claim 1, wherein the safety lockout logic check comprises:

checking whether each device in the sequence of devices is in a remotely controllable state;

and/or checking whether active control of an automatic power generation control device of the target new energy station is in a running quitting state;

and/or checking whether the station output variation caused by the batch control is smaller than a limit value.

3. The method of claim 1, further comprising:

acquiring a power grid regulation order number of a power grid regulation center; and

a reconfirmation of the grid call number and the selected device sequence is performed.

4. The method of claim 1, wherein the safety lockout logic check comprises:

checking whether each device in the sequence of devices is in a remotely controllable state.

5. The method of claim 1, wherein the step of presetting the batch control further comprises:

and under the condition that the safety locking logic passes verification, judging that the batch control is preset successfully.

6. The method according to any of claims 1-4, wherein the step of presetting the batch control further comprises:

the centralized control system of the target new energy station instructs a communication gateway machine in the station to execute the presetting of the batch control of the selected equipment sequence;

the communication gateway machine performs safety locking logic check of the equipment sequence; and

and the communication gateway machine returns the result of the safety locking logic verification to the centralized control system.

7. The method of claim 6,

in the step of the centralized control system instructing the communication gateway machine in the site to execute the preset of the batch control of the selected equipment sequence, the method comprises the following steps:

the centralized control system instructs the communication gateway machine to execute the presetting of the batch control of the equipment sequence by issuing a preset instruction to the communication gateway machine in a mode of expanding a protocol;

the preset instruction includes a device number sequence indicating the device sequence, and/or a device operation type sequence indicating an operation type of batch control to be performed, and/or a control parameter sequence indicating a parameter to be used in the batch control.

8. The method according to any one of claims 1-4, wherein the step of performing the batch control comprises:

the centralized control system of the target new energy station instructs a communication gateway machine in the station to execute the batch control on the selected equipment sequence;

the communication gateway machine respectively instructs each device in the device sequence to start control operation corresponding to the batch control;

the communication gateway machine acquires and summarizes the execution result of the control operation of each device in real time; and

and the communication gateway machine returns the summarized execution result of the batch control to the centralized control system.

9. A centralized control system of a new energy station is characterized by comprising:

the equipment sequence selection unit is used for selecting an equipment sequence to be controlled in batches in the target new energy station;

the batch control presetting unit is used for realizing the presetting of batch control by carrying out safety locking logic verification on the selected equipment sequence so as to determine the safety of the batch control operation; and

and the batch control execution unit is used for executing the batch control of the selected equipment sequence under the condition that the preset of the batch control is successful.

10. The centralized control system of claim 9, wherein the batch control preset unit comprises:

and the safety locking logic checking unit is used for checking whether each device in the device sequence is in a remote control state or not, and/or checking whether active control of an automatic power generation control device of the target new energy station is in a running quitting state or not, and/or checking whether station output change caused by batch control is smaller than a limit value or not through communication with a communication gateway machine in the target new energy station.

11. The centralized control system of claim 9, further comprising:

the acquisition unit is used for acquiring a power grid regulation number of a power grid regulation center; and

a reconfirmation unit for reconfirming the network order number and the selected equipment sequence.

12. The centralized control system of claim 9, wherein the batch control preset unit comprises:

and the safety locking logic checking unit is used for checking whether each device in the device sequence is in a remote control state or not by communicating with the communication gateway machine in the target new energy station.

13. The centralized control system of claim 9,

and the batch control presetting unit judges that the batch control presetting is successful under the condition that the safety locking logic verification performed by the safety locking logic verification unit passes.

14. A centralized control system according to any one of claims 9-12,

the batch control presetting unit instructs a communication gateway machine in the target new energy site to execute the presetting of the batch control of the selected equipment sequence,

the communications gateway machine performs a security lockout logic check of the device sequence,

and the batch control preset unit acquires a safety locking logic check result returned from the communication gateway machine.

15. The centralized control system of claim 14,

the batch control presetting unit instructs the communication gateway machine to execute the presetting of the batch control of the equipment sequence by issuing a preset instruction to the communication gateway machine in a mode of expanding a protocol,

the preset instruction includes a device number sequence indicating the device sequence, and/or a device operation type sequence indicating an operation type of batch control to be performed, and/or a control parameter sequence indicating a parameter to be used in the batch control.

16. A centralized control system according to any one of claims 9-12,

the batch control execution unit instructs a communication gateway machine in the target new energy station to execute the batch control on the selected device sequence,

the communication gateway machine respectively instructs each device in the device sequence to start the control operation corresponding to the batch control, obtains the execution result of the control operation of each device in real time and collects the execution result,

and the batch control execution unit acquires the execution result of the batch control returned from the communication gateway machine.

17. A communication gateway machine of a new energy station is characterized by comprising:

and the safety locking logic verification unit is used for performing safety locking logic verification on the selected equipment sequence according to the preset instruction of the batch control of the centralized control system of the new energy station so as to determine the safety of the batch control operation.

18. The communications gateway of claim 17,

the safety locking logic checking unit checks whether each device in the device sequence is in a remote control state, and/or checks whether the active control of the automatic power generation control device of the new energy station is in a running quitting state, and/or checks whether the station output change caused by the batch control is smaller than a limit value.

19. The communications gateway of claim 17,

the safety lockout logic check unit checks whether each device in the sequence of devices is in a remotely controllable state.

20. The communications gateway of claim 17, further comprising:

and the batch control execution unit is used for respectively instructing each device in the device sequence to start the control operation corresponding to the batch control according to the execution instruction of the batch control of the centralized control system, acquiring and summarizing the execution result of the control operation of each device in real time, and returning the summarized execution result of the batch control to the centralized control system.

Technical Field

The invention relates to a control method of a new energy station, in particular to a batch control method, a centralized control system and a communication gateway machine of the new energy station.

Background

With the construction and popularization of a centralized monitoring center (hereinafter referred to as a centralized control center) of a new energy station (including a wind power station, a photovoltaic power station and the like) of each power generation manufacturer, an operator of the centralized control center remotely carries out services such as early warning, monitoring, control, analysis and the like on a fan, a photovoltaic inverter and the like in the new energy station by means of the centralized monitoring system (hereinafter referred to as the centralized control system). In the aspect of controlling service, the control operations frequently performed by the operators include equipment startup, shutdown, reset and the like. Due to the fact that the number of the devices in the new energy station is large, operators often need to simultaneously perform the same operation on the devices during daily operation, maintenance and repair, and therefore most centralized control systems provide a batch control function.

On the other hand, the power grid regulation and control center also has the scheduling control right of the new energy station equipment.

However, the safety problems in the aspects of control priority and mutual exclusivity existing in multi-party control are not considered in the batch control function of most centralized control systems at present. For example, the grid control center is performing active power control on a wind farm for the purpose of grid safety and stability, and at this time, the batch start-stop operation of the centralized control center may destroy the effect of the active power control, resulting in safety risk. In addition, the start-up and shutdown of large-scale equipment may also cause large fluctuation in the stability of the power grid. In a word, the batch control function of the current centralized control system does not consider the current fluctuation and the safety and stability risk possibly caused to the power grid by batch control, and also does not consider the control priority and the mutual exclusivity of the centralized control center and the power grid regulation and control center, so that certain potential safety hazards exist.

Disclosure of Invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide an efficient batch control method, a centralized control system, and a communication gateway apparatus that can ensure the safety of remote batch control in a new energy station.

According to an aspect of the present invention, there is provided a batch control method for new energy stations, including: selecting an equipment sequence to be controlled in batches in a target new energy station; presetting batch control is realized by carrying out safety locking logic verification on the selected equipment sequence so as to determine the safety of the batch control operation; and executing the batch control of the selected equipment sequence under the condition that the preset of the batch control is successful.

According to another aspect of the present invention, there is provided a centralized control system for a new energy station, including: the equipment sequence selection unit is used for selecting an equipment sequence to be controlled in batches in the target new energy station; the batch control presetting unit is used for realizing the presetting of batch control by carrying out safety locking logic verification on the selected equipment sequence so as to determine the safety of the batch control operation; and a batch control execution unit that executes batch control of the selected device sequence in a case where the preset of the batch control is successful.

According to another aspect of the present invention, there is provided a communication gateway apparatus for a new energy station, including: and the safety locking logic verification unit is used for performing safety locking logic verification on the selected equipment sequence according to the preset instruction of the batch control of the centralized control system of the new energy station so as to determine the safety of the batch control operation.

According to the invention, the safety of the whole process of batch control can be ensured by designing the batch control mode which is executed after presetting, carrying out safety locking logic verification on the equipment sequence in the presetting stage and then determining whether to allow the batch control to be executed according to the preset back-verification result.

Drawings

Fig. 1 is a schematic diagram showing a control system of a new energy station;

fig. 2 is a flowchart illustrating a batch control method of a new energy station according to a first embodiment of the present invention;

FIG. 3 is a flow chart showing a detailed process of the preset step of batch control in the method of FIG. 2;

FIG. 4 is a flowchart illustrating a detailed process of the execution steps of the batch control in the method of FIG. 2;

fig. 5 is a flowchart illustrating a batch control method of a new energy yard according to a second embodiment of the present invention;

FIG. 6 is a flowchart illustrating a detailed process of the preset steps of the batch control in the method of FIG. 5.

Fig. 7 is a block diagram showing the configuration of a centralized control system according to a third embodiment of the present invention;

fig. 8 is a block diagram showing a configuration of a communication gateway apparatus according to a third embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 1 is a schematic diagram showing a control system of a new energy station.

As shown in fig. 1, a Control system (hereinafter, referred to as a Control system) 1 of the new energy station includes a centralized Control system 2, a power grid regulation and Control system 3, a central monitoring system 4, a communication grid unit 5, and an AGC (Automatic Generation Control) device 6.

The centralized control system 2 and the power grid regulation and control system 3 are both remote control systems, and the control priority of the power grid regulation and control system 3 is higher than that of the centralized control system 2. Under the operation mode of unattended operation and unattended operation, the new energy station mainly realizes remote monitoring and automatic control by means of the centralized control system 2 and the power grid regulation and control system 3. The centralized control system 2 has the functions of remote control, remote measurement, remote regulation, remote vision, remote pulse and the like on the relevant equipment and operation conditions of each unattended new energy station.

In addition, the central monitoring system 4, the communication gateway apparatus 5, and the AGC device 6 are in-station control systems respectively corresponding to new energy stations (for example, a wind power station a and a photovoltaic power station B shown in fig. 1), and the control priority of the central monitoring system 4 is higher than that of the centralized control system 2.

The communication gateway 5 is a gateway device or a server responsible for functional services such as data acquisition, data preprocessing, control, communication and the like of all devices in the new energy station where the communication gateway is located.

And a control instruction of the centralized control system 2 is issued to each station terminal device, such as a fan 7 in the wind power station a, a photovoltaic inverter 8 in the photovoltaic power station B, and the like, through the communication gateway 5. The equipment running states of the equipment in each station are collected by the communication gateway machine 5 and sent to the centralized control system 2. An active power plan curve or an active power control instruction of the power grid is issued to the AGC device 6 by an AGC master station system of the power grid control center, and the AGC device 6 controls the active output of each fan 7 and the photovoltaic inverter 8 according to a preset control strategy, so that the active power of the wind power plant A, the photovoltaic power plant B and the like can meet the active power plan value of the power grid.

Within each station, the communication gateway 5 and the AGC device 6 are hooked up to the same communication network within the station. The communication gateway machine 5 can not only obtain the equipment states of the fan 7 and the photovoltaic inverter 8 in real time, but also obtain the automatic switching state of the AGC device 6 in real time. Outside each station, a communication gateway 5 in the station communicates with the centralized control system 2 through a telecontrol communication network (including a private line and a private network mode).

It should be noted that, although fig. 1 shows a wind power plant a and a photovoltaic power plant B, this is only an example, and the control system 1 may of course include only a plurality of wind power plants a or only a plurality of photovoltaic power plants B, and may also include both a plurality of wind power plants a and a plurality of photovoltaic power plants B.

It should be noted that the control system 1 is different from the existing control system in the implementation of the batch control at the site. The batch control refers to control operations such as startup, shutdown and reset of multiple devices (such as the fan 7 and the photovoltaic inverter 8) in the new energy station in one batch.

The batch control implemented by the control system 1 is explained in detail below.

(embodiment I)

Fig. 2 is a flowchart illustrating a batch control method of a new energy station according to a first embodiment of the present invention.

As shown in fig. 2, the process flow of the batch control method first selects a sequence of equipments to be batch-controlled in the target new energy site in step 210. As an example, a plurality of fans 7 in the wind farm a may be selected as the equipment sequence to be controlled in batches. Further, the selected device sequence may be represented by a device number sequence.

Next, at step 220, the presetting of the batch control is accomplished by performing a safety lockout logic check on the selected equipment sequence to determine the safety of the batch control operation.

In step 230, it is determined whether the presetting of the batch control was successful based on the result of the safety lockout logic check. Specifically, if the result of the safety lockout logic verification is verification pass, the preset is determined to be successful, and the process proceeds to step 240, and if the result of the safety lockout logic verification fail, the preset is determined to be failed, and the processing flow of the batch control method is ended.

At step 240, batch control of the selected equipment sequence is performed.

FIG. 3 is a flowchart illustrating the detailed process of the preset step 220 of batch control in the method of FIG. 2.

As shown in fig. 3, first at step 310, the centralized control system 2 instructs the communication gateway machine 5 to perform a preset of batch control of the selected device sequence.

In this embodiment, the centralized control system 2 instructs the communication gateway apparatus 5 to execute the presetting of the batch control by issuing a preset instruction of the batch control for the selected equipment sequence to the communication gateway apparatus 5. Specifically, the preset instruction is issued to the communication gateway apparatus 5 in a manner of expanding a specification, such as a 104 specification or an internal communication specification, and the preset instruction includes a device number sequence, a device operation type sequence, and a control parameter sequence, or includes only any one or two of them. Wherein the device number sequence is a sequence of numbers of the selected device sequence; the equipment operation type sequence represents the type of batch control to be performed on the selected equipment sequence, and comprises startup, shutdown, reset and the like; the sequence of control parameters contains parameters to be used in the batch control.

In step 320 the communications gateway machine 5 checks whether each device in the selected sequence of devices is in a remotely controllable state. Specifically, the status of the local/remote control word of each device is checked according to the device number sequence in the preset command, and if some devices are in the local status, the devices are in the remote uncontrollable status, and the process goes to step 360 to lock the batch control function. If all devices are in the remote state, then the devices are in the remote controllable state and the process may proceed to step 330 to continue performing the security lockout logic check. In this step, the communication gateway 5 can obtain the real-time status of the remote/local control word of the device in real time, and when the status of the control word of a certain device changes, the control word is immediately uploaded to the communication gateway 5.

Next, in step 330, it is checked whether the active control of the AGC device of the station is in the out-of-operation state. Specifically, if the AGC device 6 is in the automatic-on-operation state, in order to prevent the batch control operation from affecting the active automatic control effect of the AGC device 6, it should go to step 360 to lock the batch control function, considering that the grid active power automatic control has a higher priority than the centralized control center remote control. Otherwise, if the AGC device 6 is in the out-of-operation state, the process may proceed to step 340 to continue performing the safety lockout logic check.

Next, in step 340, it is checked whether the change in the station output that will be caused by the batch control is less than a limit.

Specifically, the limit value in this step may be a maximum limit value of active power change in a normal condition required in the new energy grid connection technology, or may be a limit value preset according to a station condition. In addition, the communication gateway machine 5 calculates, according to the equipment number sequence, the equipment operation type sequence, and the control parameter sequence in the preset instruction, and according to the configured model, rated power, and the like of all the fans 7 or the photovoltaic inverters 8 in the entire plant, a variation of active power that would be caused if a batch operation, such as a start-stop operation, specified by the equipment operation type sequence is performed for the equipment sequence, and determines whether the variation exceeds a limit value.

Taking a certain wind farm with a rated installed capacity of 45MW (25 fans in total) as an example, according to the active power limit requirement of the standard of GB/T-19963 specification for accessing to the power system of the wind farm shown in table 1 below, if 10 fans are shut down in a batch mode, when the calculated active variation to be caused exceeds 15MW (33.33% × rated capacity ≈ 15MW), it is considered that the batch control operation may cause large fluctuation to the safety and stability of the power grid, and then it should go to step 360 to lock the batch control function.

TABLE 1 wind farm active power variation limit under normal operating conditions

Installed capacity of wind farm (MW)	The active power changes most within 10 minutesLarge Limit value (MW)
		＜30	10
30～50	Installed capacity of the whole plant/3
		＞150	50

Next, at step 350, it is determined that the security lockout logic check passed. Specifically, since all the logic checks of steps 320-340 pass, the communication gateway 5 finally determines that the batch control operation to be performed is safe without affecting the stability of the power grid, so as to return the result of passing the safety logic check. Thus, the centralized control system 2 can determine that the presetting of the batch control of the selected equipment sequence is successful based on the result.

At step 360, it is determined that the security lockout logic check fails. Thus, the centralized control system 2 can determine that the preset of the batch control of the selected equipment sequence has failed based on the result, and end the entire batch control process.

It should be noted that although fig. 3 illustrates that the communication gateway 5 performs the safety lockout logic check, this is implemented by the communication gateway 5 in order to ensure the accuracy and reliability of the control in consideration of the time delay of the telecontrol communication and the communication interference, and the like, of course, the present invention is not limited thereto, and the safety lockout logic check may also be implemented by the centralized control system 2 by communicating with the communication gateway 5 and the AGC device 6 through the centralized control system 2 according to the actual situation, and in this case, the same procedure as that of fig. 3 is also implemented.

It should be noted that although the safety lockout logic verification illustrated in fig. 3 includes three checking steps 320-340, only any one or two of the checking steps may be performed to perform the safety lockout logic verification.

Next, FIG. 4 is a flowchart illustrating the detailed process of performing step 240 of the batch control in the method of FIG. 2.

As shown in fig. 4, first, in step 410, the centralized control system 2 instructs the communication gateway apparatus 5 to perform batch control on the selected device sequence. Specifically, the centralized control system 2 instructs the communication gateway apparatus 5 to perform the batch control execution by issuing a batch control execution instruction to the communication gateway apparatus 5.

Next, in step 420, the communication gateway apparatus 5 instructs each device in the device sequence to start a control operation corresponding to the batch control. Specifically, the communication gateway apparatus 5 decomposes the batch control execution instruction into control instructions for individual devices one by one, and issues the control instructions to each device for execution.

In step 430, the communication gateway apparatus 5 acquires and summarizes the execution result of the control operation of each device in real time.

In step 440, the communications gateway machine 5 returns the summarized execution result of the batch control to the centralized control system 2.

Thereby, the entire batch control process is ended.

It should be noted that although fig. 4 illustrates the execution of the batch control by the communication gateway machine 5, this is realized by the communication gateway machine in order to ensure the accuracy and reliability of the control in consideration of the time delay of the telecontrol communication, the communication interference, and other factors, but the present invention is not limited to this, and the batch control may be executed by the centralized control system 2 by communicating with the communication gateway machine 5 by the centralized control system 2 according to the actual situation, and in this case, the batch control may be executed by the same procedure as that of fig. 4.

According to the batch control method of the new energy station in the embodiment, when equipment such as a fan and a photovoltaic inverter in the new energy station is controlled in batch, a method of presetting and then executing is adopted, and safety lockout logic check is performed on equipment sequences when presetting is performed, so that safety risks possibly caused by batch operation in the prior art can be avoided, and the safety of remote batch control can be strictly ensured. And then, the remote/local state of equipment such as a fan, a photovoltaic inverter and the like and the switching state of an AGC device of the new energy station are acquired in real time in the safety locking logic check, and whether the generated output change related to batch control exceeds a specified limit value or not is automatically calculated by combining static data information configured by engineering, such as rated power of the fan, rated power of a wind field and the like. Because the logic considers the high priority of the power grid dispatching control relative to the control of the new energy centralized control center and also considers the possible impact on the safety and stability of the power grid during the batch control of the new energy station equipment, the safe and stable operation of the power grid can be further ensured.

In addition, the batch control function of the existing centralized control system generally controls the start-stop operation of a plurality of devices through transmitting a single control instruction one by one in a circulating manner. This batch control mode has the following disadvantages: the communication protocol level has no special batch control instruction, and only single control instruction is circularly sent, so that the batch control instruction is excessively interacted in the execution process, the control efficiency is low, and the reliability is reduced.

In contrast, the invention realizes batch control by combining one control preset instruction + one control execution instruction of the centralized control system and a plurality of control execution instructions of the communication gateway machine, thereby greatly simplifying the interaction complexity caused by a method of issuing all control instructions one by one from the centralized control system in the prior art and improving the efficiency of batch control.

Therefore, the remote operation capability of the new energy centralized control system can be improved, and the safe and stable operation of the power grid can be guaranteed.

(second embodiment)

In the centralized control system, the batch control can be divided into two types of conventional batch control and emergency command batch control. The conventional batch control is mainly used for remote batch startup and shutdown operation during daily operation or maintenance. The emergency order batch control is used for informing an emergency order to a centralized control center by a power grid regulation and control department under the condition of a power grid accident or emergency, and the centralized control center executes operations such as full-scale emergency stop or batch stop. The main difference between the two is that in an emergency control situation, the active power change of the new energy station can exceed the maximum limit value of the active power change specified by a power system dispatching mechanism, and the active power change must strictly meet the requirement of the specified maximum limit value in a conventional situation. The batch control method in the first embodiment can be used as a conventional batch control method.

A method suitable for emergency call batch control is described below. Fig. 5 is a flowchart illustrating a batch control method of a new energy yard according to a second embodiment of the present invention.

As shown in fig. 5, the processing flow of the batch control method first obtains a grid code of a grid control center and selects an equipment sequence to be subjected to batch control in a target new energy station in step 510. Here, the grid code is notified to the centralized control system 2 by the grid control center in order to perform the emergency code batch control on the new energy station in the event of a grid accident or an emergency.

Next, at step 520, the grid code and the sequence of devices to be batched controlled are reconfirmed. In order to ensure the safety of the emergency call batch control, the emergency batch control operation can be continuously executed only when the power grid call number and the information of the equipment sequence to be controlled are completely consistent with the previously acquired information. Otherwise, the batch control operation should terminate.

At step 530, it is determined whether the reconfirmation of the grid code and the equipment sequence to be batched controlled is successful. If the process is successful, the process proceeds to step 540, otherwise, the process flow ends.

Next, at step 540, the presetting of the batch control is implemented by performing a safety lockout logic check on the selected equipment sequence to determine the safety of the batch control operation.

In step 550, it is determined whether the presetting of the batch control was successful based on the result of the safety lockout logic check. Specifically, if the result of the safety lockout logic verification is verification pass, the preset is determined to be successful, and the process proceeds to step 560, and if the result of the safety lockout logic verification fail, the preset is determined to be failed, and the processing flow of the batch control method is ended.

At step 560, batch control of the selected equipment sequence is performed.

FIG. 6 is a flowchart illustrating the detailed process of the preset step 540 of batch control in the method of FIG. 5.

As shown in fig. 6, first, in step 610, the centralized control system 2 instructs the communication gateway apparatus 5 to perform the presetting of the batch control of the selected device sequence. This step is the same as step 310 in fig. 3 of the first embodiment, and a repetitive description thereof will be omitted.

Next, the communications gateway machine 5 checks whether each device in the selected sequence of devices is in a remotely controllable state, step 620. This step is the same as step 320 in fig. 3 of the first embodiment, and a repetitive description thereof will be omitted.

Next, at step 630, it is determined that the security lockout logic check passed. Thus, it is finally determined that the batch control operation to be performed is safe, so that the centralized control system 2 can determine that the presetting of the batch control of the selected equipment sequence is successful based on the result.

At step 640, it is determined that the security lockout logic check does not pass. Thus, the centralized control system 2 can determine that the preset of the batch control of the selected equipment sequence has failed based on the result, and end the entire batch control process.

It can be seen that, compared with the batch control method of the first embodiment, the batch control method of the present embodiment omits the check of the active control operation state of the AGC device 6 and the safety check flow of the active power change limit value in the safety logic check.

Although fig. 6 illustrates the security lockout logic check being performed by the communication gateway apparatus 5, the security lockout logic check may be performed by the centralized control system 2 communicating with the communication gateway apparatus 5 and the AGC device 6 as described in the first embodiment, in which case the security lockout logic check may be performed by the same procedure as that of fig. 6.

The detailed procedure of the step 560 for executing the batch control of the plant sequence in fig. 5 is the same as that of fig. 4 in the first embodiment, and a detailed description thereof is omitted here.

According to the batch control method of the new energy station in the embodiment, compared with the method in the first embodiment, the steps of checking the active control operation state of the AGC device and safety check of the active power change limit value in the safety lockout logic check are omitted, and only a monitoring and confirming mechanism related to the power grid dispatching order is included, so that the emergency control requirement of the power grid dispatching order in an emergency situation can be met, and the emergency batch control under the power grid dispatching order can be carried out.

(third embodiment)

The present embodiment describes in detail the configurations of the centralized control system 2 and the communication gateway apparatus 5 that implement the batch control method according to the first and second embodiments.

Fig. 7 is a block diagram showing the configuration of a centralized control system according to a third embodiment of the present invention.

As shown in fig. 7, the centralized control system 2 of the present embodiment includes: a device sequence selection unit 21, a batch control preset unit 22, and a batch control execution unit 23.

The equipment sequence selection unit 21 selects an equipment sequence to be controlled in batches in the target new energy station.

The batch control preset unit 22 implements a preset of batch control by performing a safety lockout logic check for the selected equipment sequence to determine the safety of the batch control operation.

In one embodiment, the batch control presetting unit 22 comprises a safety lockout logic checking unit 221, and the safety lockout logic checking unit 221 checks whether each device in the sequence of devices is in a remotely controllable state, and/or checks whether active control of the AGC arrangement 6 of the station is in an out-of-operation state, and/or checks whether a change in station output caused by the batch control is less than a limit value, by communicating with the communication gateway 5 in the station.

In another embodiment, the batch control presetting unit 22 may not include the safety lockout logic check unit 221, but instruct the communication gateway machine 5 in the station to perform the batch control presetting of the selected device sequence, the safety lockout logic check of the device sequence is performed by the communication gateway machine 5, and the batch control presetting unit 22 obtains the result of the safety lockout logic check from the communication gateway machine 5. In one embodiment, the batch control presetting unit 22 instructs the communication gateway machine 5 to perform the presetting of the batch control of the device sequence by issuing a preset instruction to the communication gateway machine 5 in a manner of extending the specification, where the preset instruction includes a device number sequence representing the device sequence, and/or a device operation type sequence representing an operation type of the batch control to be performed, and/or a control parameter sequence representing a parameter to be used in the batch control.

And, in case the safety lockout logic check passes, the batch control presetting unit 22 determines that the presetting of the batch control is successful.

The batch control execution unit 23 executes the batch control of the selected device sequence in a case where the preset of the batch control by the batch control preset unit 22 is successful. In an embodiment, the batch control execution unit 23 instructs the communication gateway machine 5 in the field station to execute batch control on the selected device sequence, and then the communication gateway machine 5 instructs each device in the device sequence to start a control operation corresponding to the batch control, and obtains and summarizes the execution result of the control operation of each device in real time, and the batch control execution unit 23 obtains the execution result of the batch control from the communication gateway machine 5.

The centralized control system 2 configured as described above can implement the batch control method according to the first embodiment described above, and can be used to implement conventional batch control.

Furthermore, the centralized control system 2 may optionally further include an acquisition unit 24 and a reconfirmation unit 25.

The obtaining unit 24 obtains a power grid regulation number of the power grid regulation and control center.

The reconfirmation unit 25 performs reconfirmation of the grid code and the selected device sequence.

Further, in the case where the reconfirmation unit 25 reconfirms the grid code and the selected device sequence, the safety lockout logic check unit 221 in the batch control presetting unit 22 checks only whether each device in the device sequence is in a remote controllable state by communicating with the communication gateway apparatus 5 in the site. Alternatively, the batch control preset unit 22 instructs the communication gateway apparatus 5 to perform the check.

Thus, the centralized control system 2 can further implement the batch control method according to the second embodiment, and can be used to implement emergency call batch control.

Fig. 8 is a block diagram showing a configuration of a communication gateway apparatus according to a third embodiment of the present invention.

As shown in fig. 8, the communication gateway apparatus 5 of the present embodiment includes: a safety lockout logic verification unit 51 and a batch control execution unit 52.

The safety lockout logic verification unit 51 performs safety lockout logic verification on the selected equipment sequence according to the preset instruction of the batch control of the centralized control system 2 of the new energy station to determine the safety of the batch control operation.

Specifically, in one embodiment, the safety lockout logic check unit 51 checks whether each device in the sequence of devices is in a remotely controllable state, and/or checks whether active control of the AGC arrangement 6 of the station is in an out-of-service state, and/or checks whether the change in station output caused by the batch control is less than a limit.

In another embodiment, the safety lockout logic check unit 51 simply checks whether each device in the sequence of devices is in a remotely controllable state.

The batch control execution unit 52 respectively instructs each device in the device sequence to start the control operation corresponding to the batch control according to the execution instruction of the batch control of the centralized control system 2, obtains and summarizes the execution result of the control operation of each device in real time, and returns the summarized execution result of the batch control to the centralized control system 2.

According to an embodiment of the invention, a computer device is also provided. The computer arrangement comprises a processor and a memory, the memory storing a computer program executable on the processor, the computer program, when being executed by the processor, realizing the steps of the control method of the new energy station according to the invention.

Furthermore, it should be understood that each unit in the apparatus according to the exemplary embodiment of the present invention may be implemented as a hardware component and/or a software component. The individual units may be implemented, for example, using Field Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), depending on the processing performed by the individual units as defined by the skilled person.

Further, the method according to the exemplary embodiment of the present invention may be implemented as a computer program in a computer-readable recording medium. The computer program may be implemented by a person skilled in the art from the description of the method described above. The above-described method of the present invention is implemented when the computer program is executed in a computer.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.