阅读说明：本技术 基于串行光纤保护的svg分相控制装置及保护方法 (Based on the SVG individual-phase control device of serial fiber optic protection and guard method ) 是由 陈锐 余怀林 丁凯 汪赛力 莫尚林 张壹飞 于 2019-09-19 设计创作，主要内容包括：本发明公开了一种基于串行光纤保护的SVG分相控制装置及保护方法,要解决的技术问题是及时有效对SVG进行保护。本发明的基于串行光纤保护的SVG分相控制装置,设有主控板和功率模块,主控板采用保护光纤经分相控制光纤板连接功率模块后,再至主控板。本发明的基于串行光纤保护的SVG分相保护方法：主控板循环发出保护信号,采用串行保护光纤传输,保护信号经分相控制光纤板传递至功率模块后,在设定的时间内返回到主控板,主控板判断分相控制光纤板和功率模块工作正常。本发明与现有技术相比,若某分相控制光纤板或功率模块出现故障,对功率模块进行闭锁保护,确保SVG装置不会受到损伤,避免故障扩大造成更大损失。(The invention discloses a kind of based on the SVG individual-phase control device of serial fiber optic protection and guard method, and technical problems to be solved are timely and effective to protect to SVG.SVG individual-phase control device based on serial fiber optic protection of the invention, is equipped with master control borad and power module, master control borad using protection optical fiber after individual-phase control fibre optic plate connects power module, then to master control borad.SVG split-phase guard method based on serial fiber optic protection of the invention: master control borad circulation issues protection signal; using serial protection optical fiber transmission; protect signal after individual-phase control fibre optic plate is transferred to power module; master control borad is returned within the set time, and master control borad judges that individual-phase control fibre optic plate and power module are working properly.Compared with prior art, the present invention carrying out latch-up protection to power module, it is ensured that SVG device is not damaged, and failure propagation is avoided to cause bigger loss if certain individual-phase control fibre optic plate or power module break down.)

1. a kind of SVG individual-phase control device based on serial fiber optic protection is equipped with master control borad (2) and power module (7), feature Be: the master control borad (2) is main after individual-phase control fibre optic plate (6) connect power module (7), then extremely using protection optical fiber (8) It controls plate (2).

2. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: described point Phase control fibre optic plate (6) is the 1st individual-phase control fibre optic plate (6-1), the 2nd individual-phase control fibre optic plate (6-2), the 3rd individual-phase control light Fine plate (6-3).

3. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: described point Phase control fibre optic plate (6) cascade connection has the power module (7) of identical quantity.

4. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: the described 1st Individual-phase control fibre optic plate (6-1) cascade connection have the 1st power module (7-1), the 2nd power module (7-2) ..., the n-th power module (7-n)；2nd individual-phase control fibre optic plate (6-2) cascade connection has the (n+1)th power module (7- (n+1)), the n-th+2 power mould Block (7- (n+2)) ..., 2n power module (7-2n)；3rd individual-phase control fibre optic plate (6-3) cascade connection has 2n+1 Power module (7- (2n+1)), 2n+2 power module (7- (2n+2)) ..., 3n power module (7-3n)；The n is in 10KV Network voltage is 12, is 42 in 35KV network voltage.

5. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: described point It is connect respectively by parallel optical fibre (11) between phase control fibre optic plate (6) and its cascade power module (7).

6. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: the master The protection signal that plate (2) issue protection power module is controlled, successively through the 1st individual-phase control fibre optic plate (6-1), the 1st power module (7- 1) sequentially to the n-th power module (7-n), 2n power module (7-2n) sequentially to the (n+1)th power module (7- (n+1)), the 2nd point Phase control fibre optic plate (6-2), the 3rd individual-phase control fibre optic plate (6-3), 2n+1 power module (7- (2n+1)) are sequentially to 3n function Rate module (7-3n) returns to master control borad (2).

7. the SVG individual-phase control device according to claim 1 based on serial fiber optic protection, it is characterised in that: the master Plate (2) connection bus board (1) is controlled, bus board (1) is connected with touch screen (12), and the master control borad (2) and touch screen (12) pass through RS485 serial communication interface establishes communication connection.

8. a kind of SVG split-phase guard method based on serial fiber optic protection, comprising the following steps:

One, using serial protection optical fiber (8), master control borad (2) is established after individual-phase control fibre optic plate (6) connect power module (7), Again to the communication connection of master control borad (2)；

Two, master control borad (2) circulation issues protection signal, using serial protection optical fiber (8) transmission, protects signal through individual-phase control light After fine plate (6) is transferred to power module (7), master control borad (2) are returned within the set time, master control borad (2) judges split-phase control Fibre optic plate and power module processed are working properly.

9. the SVG split-phase guard method according to claim 8 based on serial fiber optic protection, it is characterised in that: described point Phase control fibre optic plate (6) is the 1st individual-phase control fibre optic plate (6-1), the 2nd individual-phase control fibre optic plate (6-2), the 3rd individual-phase control light Fine plate (6-3)；

1st individual-phase control fibre optic plate (6-1) cascade connection have the 1st power module (7-1), the 2nd power module (7-2) ..., N-th power module (7-n)；2nd individual-phase control fibre optic plate (6-2) cascade connection have the (n+1)th power module (7- (n+1)), N-th+2 power module (7- (n+2)) ..., 2n power module (7-2n)；3rd individual-phase control fibre optic plate (6-3) cascade connects Be connected to 2n+1 power module (7- (2n+1)), 2n+2 power module (7- (2n+2)) ..., 3n power module (7-3n)； The n is 12 in 10KV network voltage, is 42 in 35KV network voltage；

The master control borad (2) issues protection power module signal, successively through the 1st individual-phase control fibre optic plate (6-1), the 1st power mould Block (7-1) sequentially to the n-th power module (7-n), 2n power module (7-2n) sequentially to the (n+1)th power module (7- (n+1)), 2nd individual-phase control fibre optic plate (6-2), the 3rd individual-phase control fibre optic plate (6-3), 2n+1 power module (7- (2n+1)) are sequentially extremely 3n power module (7-3n) returns to master control borad (2).

10. the SVG split-phase guard method according to claim 8 based on serial fiber optic protection, it is characterised in that: the master Without the protection signal for detecting return, master control borad (2) judges that individual-phase control fibre optic plate (6) or power module (7) occur for control plate (2) Failure sends locking pulse signal to power module (7).

Technical field

The present invention relates to a kind of power electronic equipment and guard method, especially a kind of high-voltage static var generator and guarantor Maintaining method.

Background technique

As various power electronics nonlinear loads access power grid, the power quality of power grid sharply deteriorates, and power factor is big It is big to reduce, to improve power quality, maintains the power factor of power grid in one good numberical range, introduce static nothing Function generator SVG.The SVG concatenated power module of the prior art is more, after breaking down, has little time to carry out all power modules Protection causes cascade multiple power modules to burn the formula of operating and is damaged, causes greater loss.

Summary of the invention

The object of the present invention is to provide a kind of based on the SVG individual-phase control device of serial fiber optic protection and guard method, The technical issues of solution is timely and effective to protect to SVG.

The invention adopts the following technical scheme: a kind of SVG individual-phase control device based on serial fiber optic protection, is equipped with master control Plate and power module, the master control borad using protection optical fiber after individual-phase control fibre optic plate connects power module, then to master control borad.

Individual-phase control fibre optic plate of the invention is the 1st individual-phase control fibre optic plate, the 2nd individual-phase control fibre optic plate, the 3rd split-phase control Fibre optic plate processed.

Individual-phase control fibre optic plate cascade connection of the invention has the power module of identical quantity.

1st individual-phase control fibre optic plate cascade connection of the invention have the 1st power module, the 2nd power module ..., the n-th power Module；The 2nd individual-phase control fibre optic plate cascade connection have the (n+1)th power module, the n-th+2 power module ..., 2n power mould Block；The 3rd individual-phase control fibre optic plate cascade connection have 2n+1 power module, 2n+2 power module ..., 3n power mould Block；The n is 12 in 10KV network voltage, is 42 in 35KV network voltage.

It is connected respectively by parallel optical fibre between individual-phase control fibre optic plate of the invention and its cascade power module.

Master control borad of the invention issues the protection signal of protection power module, successively through the 1st individual-phase control fibre optic plate, the 1st Power module sequence is to the n-th power mould, 2n power module sequentially to the (n+1)th power module, the 2nd individual-phase control fibre optic plate, the 3rd Individual-phase control fibre optic plate, 2n+1 power module sequence to 3n power module, return to master control borad.

Master control borad of the invention connects bus board, and bus board is connected with touch screen, and the master control borad and touch screen are through RS485 Serial communication interface establishes communication connection.

A kind of SVG split-phase guard method based on serial fiber optic protection, comprising the following steps:

One, using serial protection optical fiber, master control borad is established after individual-phase control fibre optic plate connects power module, then to master control The communication connection of plate；

Two, master control borad circulation issues protection signal, using serial protection optical fiber transmission, protects signal through individual-phase control optical fiber After plate is transferred to power module, master control borad is returned within the set time, and master control borad judges individual-phase control fibre optic plate and power Module is working properly.

Method individual-phase control fibre optic plate of the invention is the 1st individual-phase control fibre optic plate, the 2nd individual-phase control fibre optic plate, the 3rd point Phase control fibre optic plate；

The 1st individual-phase control fibre optic plate cascade connection have the 1st power module, the 2nd power module ..., the n-th power mould Block；The 2nd individual-phase control fibre optic plate cascade connection have the (n+1)th power module, the n-th+2 power module ..., 2n power mould Block；The 3rd individual-phase control fibre optic plate cascade connection have 2n+1 power module, 2n+2 power module ..., 3n power mould Block；The n is 12 in 10KV network voltage, is 42 in 35KV network voltage；

The master control borad issues protection power module signal, successively suitable through the 1st individual-phase control fibre optic plate, the 1st power module Sequence is to the n-th power module, 2n power module sequentially to the (n+1)th power module, the 2nd individual-phase control fibre optic plate, the 3rd individual-phase control Fibre optic plate, 2n+1 power module sequence to 3n power module, return to master control borad.

Method master control borad of the invention judges individual-phase control fibre optic plate or function without the protection signal for detecting return, master control borad Rate module breaks down, and sends locking pulse signal to power module.

Compared with prior art, the present invention the protection signal that master control borad issues, using protection optical fiber through individual-phase control optical fiber After plate, power module, then to master control borad, if certain individual-phase control fibre optic plate or power module break down, to power module progress Latch-up protection, it is ensured that SVG device is not damaged, and failure propagation is avoided to cause bigger loss.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the SVG individual-phase control device the present invention is based on serial fiber optic protection.

Fig. 2 is protection guard method schematic diagram of the invention.

Specific embodiment

The present invention is described in further details with reference to the accompanying drawings and examples.

As shown in Figure 1, the SVG individual-phase control device (device) of the invention based on serial fiber optic protection, is equipped with bus board 1, bus board 1 is connected with master control borad 2, sampling plate 3, input and output plate 4, power panel 5 and touch screen 12.Master control borad 2 and touch screen 12 establish communication connection through RS485 serial communication interface.Master control borad 2 is connected with power module 7 through individual-phase control fibre optic plate 6.

Data interaction is carried out by bus board 1 between master control borad 2 and sampling plate 3, master control borad 2 and input and output plate 4.

Individual-phase control fibre optic plate 6 is the 1st individual-phase control fibre optic plate 6-1, the 2nd individual-phase control fibre optic plate 6-2, the 3rd split-phase control Fibre optic plate 6-3 processed.

Two pairs of serial fiber optic communications are respectively adopted between master control borad 2 and each individual-phase control fibre optic plate 6, a pair of of optical fiber is height Fast optical fiber 9 constitutes high-speed channel, and another pair optical fiber is that low speed optical fiber 10 constitutes slow channels.

Each 6 cascade connection of individual-phase control fibre optic plate has the power module 7 of identical quantity.

1st individual-phase control fibre optic plate 6-1 concatenated in order be connected with the 1st power module 7-1, the 2nd power module 7-2 ..., N power module 7-n.

Under network voltage 10KV voltage class, n is usually 12；Under network voltage 35KV voltage class, n is usually 42。

2nd individual-phase control fibre optic plate 6-2 concatenated in order is connected with the (n+1)th power module 7- (n+1), the n-th+2 power module 7- (n+2) ..., 2n power module 7-2n.

3rd individual-phase control fibre optic plate 6-3 concatenated in order is connected with 2n+1 power module 7- (2n+1), 2n+2 power mould Block 7- (2n+2) ..., 3n power module 7-3n.

Letter is carried out by parallel optical fibre 11 respectively between each individual-phase control fibre optic plate 6 and its cascade each power module 7 Breath interaction.

The protection signal for the protection power module 7 that master control borad 2 issues is transmitted using protection optical fiber 8, successively through the 1st split-phase control Fibre optic plate 6-1 processed, the 1st power module 7-1 sequence to the n-th power module 7-n, then via 2n power module 7-2n sequence to the N+1 power module 7- (n+1), the 2nd individual-phase control fibre optic plate 6-2, most afterwards through the 3rd individual-phase control fibre optic plate 6-3,2n+1 power Module 7- (2n+1) sequentially to after 3n power module 7-3n, returns to master control borad 2.

Bus board 1 facilitates master control borad 2 and sampling plate 3, master control borad 2 and opens for providing 16 data and 8 bit address buses Enter to output plate 4 and carries out data interaction.

Master control borad 2 is handled by the prior art by the voltage and current signal of sampling power grid, input and output signal, generates modulation letter Number cascade power module 7 is issued to through high speed fibre 9, individual-phase control fibre optic plate 6.Modulated signal be configuration sampling period, Flag bit is sent with reference to wave amplitude, modulating wave reference value, phase current direction, individual-phase control fibre optic plate rs 232 serial interface signal.Meanwhile master control Plate 2 receives 7 status information of power module from split-phase fibre optic plate 6 through low speed optical fiber 10.Status information is the real-time direct current of power module Voltage, power module real-time status, left bridge arm insulated gate bipolar transistor IGBT temperature, right bridge arm IGBT temperature, power mould Block system (software) version number.

Master control borad 2 is read the voltage and current sampled signal that sampling plate 3 acquires power grid by the prior art, and through filtering, Parker becomes DQ transformation is changed, obtains the active component and reactive component of voltage and current, then calculate the active power of output and reactive power of SVG Value, is issued to individual-phase control fibre optic plate 6 by high speed fibre 9.Wherein, the active component with reactive component of voltage and current are made respectively Calculate the active feedback input signal with idle PI controller of voltage and current ring for master control borad 2, at the same according to constant voltage, power, Electric current, power factor (PF) mode or auto-reactive compensation mode provide the reference value of corresponding voltage, electric current PI controller, such as When work is in constant voltage control model, the reference value of Voltage loop is determined according to the requirement of power grid, is finally controlled by voltage and current PI Device processed generates reference voltage modulated signal and is handed down to individual-phase control fibre optic plate 6 by high speed fibre 9.PI controller is a kind of existing The linear controller of technology constitutes control deviation according to given value and real output value, the ratio of deviation and integral is passed through line Property combination constitute control amount, controlled device is controlled.

Master control borad 2 receives the open instructions of the opening power module 7 of the sending of touch screen 12, is issued to through high speed fibre 9 Individual-phase control fibre optic plate 6, then power module 7 is transmitted to through parallel optical fibre 11.Open instructions is so that power module 7 enters heat standard The instruction of standby state, is labeled as 0x0001.

Sampling plate 3 uses U.S. Ya De promise semiconductor technology Co., Ltd AD7856 data sampling chip, every 119us docking Enter power grid voltage and current signal carry out sampling with analog-to-digital conversion after, as in 2 Digital Signal Processing dsp controller of master control borad The input signal of voltage and current control ring.

Input and output plate 4 uses the input and output plate of the prior art.Be responsible for device external power grid switching value information collection and Relay is outputed, and such as circuit breaker position signal, combined floodgate, the sub-gate signal of power grid, passes to master control borad 2 by bus board 1.

Power panel 5 is master control borad 2, sampling plate 3, input and output plate 4, individual-phase control fibre optic plate 6 and touch screen through bus board 1 12 provide power supply.

Power module 7 takes electricity from electric system high voltage bus.Electric system is that busbar voltage is 10KV or the electricity of 35KV Force system

Individual-phase control fibre optic plate 6 obtains electric energy from power panel 5, can also be individually by other power supply power supplies.

Individual-phase control fibre optic plate 6 matches the controller of the XC6SLX150 of Sentos Xilinx company using the U.S..

6 one side of individual-phase control fibre optic plate receives the voltage modulated that master control borad 2 issues through high speed fibre 9 by the prior art and believes Number, the phase shift carrier signal that wherein on-site programmable gate array FPGA of voltage modulation signal and individual-phase control fibre optic plate generates, The pulse width modulation (PWM) signal generated more afterwards, then the FPGA of individual-phase control fibre optic plate connects (this individual-phase control light to it Fine plate) n power module voltage be ranked up, according to the direction of real-time current and the power cell pulse rotation side of pressure N group pwm signal is distributed to each power module 7 by the parallel channel TX 11, realizes electric voltage equalization in power module phase by method； Meanwhile individual-phase control fibre optic plate 6 receives power module direct current real-time voltage, the power mould of each power module by parallel channel 11 Block real-time status, left bridge arm IGBT temperature, right bridge arm IGBT temperature, power module system (software) version number signal.

6 another aspect of individual-phase control fibre optic plate is real by the power module that the prior art is received through low speed optical-fibre channel 10 When the power module fault message that is generated by "or" logic of state and the average value of n power module voltage upload to master control borad 2。

Individual-phase control fibre optic plate 6 receives the pulse signal (labeled as 0x0555) for the opening power module that master control borad 2 issues, Power module 7 is passed to by parallel optical fibre 11.Individual-phase control fibre optic plate 6 receives one group of protection signal (mark that master control borad 2 issues It is denoted as 0x1111), power module 7 is passed to one by one through overprotection optical fiber 8.

Individual-phase control fibre optic plate 6 is issued to the signal of power module 7 are as follows: the duty cycle of the AD Sampling interrupt of master control borad 2, Pulse width modulation (PWM) signal opens power module signal, closes power module signal.AD is sampled as first converting analog quantity For digital quantity, signal then is acquired by setting sample frequency again, constitutes last sampled signal.

Power module 7 receives the pwm signal that individual-phase control fibre optic plate 6 issues, and carries out to the voltage of power module output end Adjust: when pulse signal is 1, the voltage of power module output end is capacitance voltage value；When pulse signal is 0, power mould The voltage of block output end is zero；When pulse signal is -1, the voltage of power module output end is capacitance voltage negative value.

Power module 7 uploads to the signal of individual-phase control fibre optic plate 6 are as follows: the real-time DC voltage of power module, power module Real-time status, left bridge arm IGBT temperature, right bridge arm IGBT temperature, power module system (software) version number.

The course of work of the device of the invention are as follows:

1. the network voltage current sampling signal that master control borad 2 carrys out the transmission of sampling plate 3, calculates voltage and active point of electric current Amount and reactive component, the active and idle PI of the active component and reactive component of voltage and electric current respectively as voltage and electric current loop The feedback input signal of controller.

2. according to control mode constant voltage, power, electric current, power factor (PF) mode and auto-reactive compensation mode, master control borad 2 The target reference of voltage and current PI controller, object reference are obtained by comparing the network voltage electric current that sampling plate 3 samples Value generates target reference voltage modulated signal after voltage and current PI controller.

3. the master control borad 2 of device judges 7 fault-free of individual-phase control fibre optic plate 6 and power module.

4. voltage modulation signal generates pwm pulse signal by the modulation of individual-phase control fibre optic plate 6, it is sent to power module 7.

5. the pwm pulse signal demodulation that power module 7 receives is converted into actual target voltage values, when SVG is to power grid When conveying capacitive reactive power, network voltage value can become larger.When SVG conveys lagging reactive power to power grid, network voltage value It can become smaller.SVG can judge to convey capacitive reactive power or inductive reactive power by judging network voltage and target voltage.

6. device realizes SVG device to power grid constant voltage, power, electricity to power grid active power of output and reactive power value The control of stream, power factor (PF), auto-reactive compensation.

SVG split-phase guard method based on serial fiber optic protection of the invention, comprising the following steps:

One, operator is on touch screen 12 to 2 output protection enable signal of master control borad.

Protection enable signal is the permission signal for the control protection signal output that operator is arranged on touch screen 12, touching Screen 12 is touched to 2 output protection enable signal of master control borad, can just enable guard method of the invention, touch screen 12 is without output protection Enable signal, guard method of the invention are shielded.

Two, 2 output protection signal of master control borad, using protection optical fiber 8 transmit, successively through the 1st individual-phase control fibre optic plate 6-1, 1st power module 7-1 sequence to the n-th power module 7-n, then via 2n power module 7-2n sequence to the (n+1)th power module 7- (n+1), the 2nd individual-phase control fibre optic plate 6-2, most afterwards through the 3rd individual-phase control fibre optic plate 6-3,2n+1 power module 7- (2n+ 1) sequentially within the set time, master control borad 2 is returned to, master control borad 2 judges individual-phase control light to after 3n power module 7-3n Fine plate and each power module fault-free.

In the present embodiment, protection signal is the numerical value (numerical value) of one group of protection signal, and such as 0x1111, setting time is every 5us issues a numerical value.

Master control borad 2 judges each power module fault-free, and the pulse signal of power module is opened in the output of master control borad 2, through high speed Optical fiber 9 is issued to individual-phase control fibre optic plate 6, then is transmitted to power module 7 through parallel optical fibre 11.In the present embodiment, pulse signal The character for being 0x1101 for a group mark.

Open instructions is the pulse signal for controlling power module 7 and entering hot preparation state, by operator in touch screen 12 Upper operation issues, through master control borad 2, individual-phase control fibre optic plate 6 to power module 7.After power module 7 receives open instructions, Power module 7 is in hot preparation state.

On the basis of power module 7 is in hot preparation state, power module 7 receives the pulse width tune that master control borad 2 issues Pwm signal processed, power module 7 enter working condition according to the pwm pulse signal received, the output as concatenated power module Voltage, power module enter operation operating mode.Hot preparation state is that power module 7 has powered on, and is subjected to individual-phase control optical fiber Plate 6 passes through the signal that optical fiber 11 issues.

Pwm signal is handed down to individual-phase control plate 6 by high speed fibre 9 by master control borad 2, and individual-phase control plate 6 passes through optical fiber 11 Pwm signal is handed down to power module 7, power module 7 is made to enter working condition.

After power module 7 receives the pwm signal that individual-phase control fibre optic plate 6 issues, power module opening signal mark is converted Position, is uploaded to individual-phase control fibre optic plate 6, individual-phase control fibre optic plate 6 for power module opening signal flag bit through parallel optical fibre 11 It is uploaded to master control borad 2 again through low speed optical fiber 10.

After master control borad 2 determines that all power modules 7 are opened, through protecting optical fiber 8 to issue one group of serial fiber optic protection again Signal, successively through the 1st individual-phase control fibre optic plate 6-1, the 1st power module 7-1 sequence to the n-th power module 7-n, then via 2n Power module 7-2n sequence is to the (n+1)th power module 7- (n+1), the 2nd individual-phase control fibre optic plate 6-2, most afterwards through the 3rd individual-phase control Fibre optic plate 6-3,2n+1 power module 7- (2n+1) sequentially to after 3n power module 7-3n, return to master control borad 2.

Issuing from master control borad 2 protects the numerical value of signal to the numerical value time is received within setting time, and master control borad 2 is sentenced Disconnected individual-phase control fibre optic plate and all power modules are working properly.Continue cycling through the number that protection signal is issued through protection optical fiber 8 It is worth, in the present embodiment, setting time is that every 5us issues a numerical value.

If any plate in master control borad 2, individual-phase control fibre optic plate 6 and power module 7 breaks down, from sending numerical value Afterwards to setting time, master control borad 2 can not detect the numerical value of return, then master control borad 2 judges in individual-phase control fibre optic plate, power mould There are certain one or a few plates to break down in block, and device can not continue to work normally, and sends be latched to power module 7 at once Pulse signal, be latched power module, power module 7 is protected, it is timely and effective that SVG is protected, avoiding device by Greater loss.

It is that power module receives the opening signal that individual-phase control fibre optic plate 6 issues that power module, which is opened, can after opening Receive pwm signal, into working condition.In the case where it is not switched on, power module 7 cannot work.

Power module 7 is equipped with the XC6SLX9 controller of Xilinx company, receives the numerical value of upper level functional module transmission 0x1111 passes to next stage functional module after receiving.

Locking power module is that master control borad 2 blocks the pwm signal for being handed down to power module 7, while issuing and exiting hot preparation The out code of the pulse signal of state closes power module 7, it is made no longer to work.

Normal power module 7 gives fault power module, failure through the numerical value 0x1111 of the protection transmitting protection signal of optical fiber 8 Due to faulty after power module reception, the next stage power module of this power module, numerical value 0x1111 can not be passed to Master control borad 2 can not be finally returned to, master control borad 2 can not receive the numerical value of return, therefore be latched all power modules.

As shown in Fig. 2, master control borad 2 is through protecting optical fiber 8 when SVG device is in standby (power module has been opened) Protection channel actively issue power module protection signal, this time issue delay 5us after master control borad 2 serially protection optical fiber return Termination receives protection signal, then SVG device starts to operate normally.Master control borad 2 is in serially protection light after this time issues delay 5us Fine return terminal does not receive protection enable signal, and SVG device enters plant failure state.

In normal condition, master control borad 2 can in the time interval of 5us for individual-phase control fibre optic plate 6 and all power modules 7 To receive protection enable signal.If there are failure, master control borads 2 for any portion of individual-phase control fibre optic plate 6 and power module 7 Serial block signal of the fiber-optic output through protecting optical fiber 8 actively to issue fiber optic protection is transmitted to individual-phase control fibre optic plate or power Module, meanwhile, locking power module signal is issued each power module 7 by parallel optical fibre 11 by individual-phase control fibre optic plate 6.To Can be to avoid in the case where plant failure, rebooting device runs and bigger failure is caused to occur.

Device issues protection enable signal by touch screen 12 in opening power module, operator, and touch screen 12 will be protected After shield enable signal is transferred to master control borad 2, device is in operating status, if event occurs for power module or individual-phase control fibre optic plate Barrier, power module or the serial fiber-optic output of individual-phase control fibre optic plate issue protection blocking signal and are transmitted to subsequent power module Or individual-phase control fibre optic plate, after master control borad 2 receives protection blocking signal, fiber optic protection locking is actively issued through serial optical fiber 8 Locking power module signal is issued each power module through parallel optical fibre 11 by signal.Can quickly and effectively to power module and SVG device is protected, and is avoided by greater loss.

In the present embodiment, master control borad 2 is public using the TMS320F28335DSP chip and match Sentos Xilinx of Texas Instrument Ti The XC6SLX25FPGA chip of department, XC6SLX150 of the individual-phase control fibre optic plate 6 using match Sentos Xilinx company, power module 7 Using the XC6SLX25 chip of match Sentos Xilinx company.

Serially led between individual-phase control fibre optic plate of the invention and master control borad by high speed fibre 9 and low speed optical fiber 10 Letter is conducive to individual-phase control fibre optic plate 6 and is divided according to power module 7 by the priority of the signal sent on parallel optical fibre 11 Match, wherein the timeliness highest priority of 7 real-time voltage of power module and real-time status, using 9 channel of high speed fibre, and power 7 temperature of module, the timeliness priority of software version number signal are slightly lower, using 10 channel of low speed optical fiber, are conducive to the optimization of resource With utilization.

The present invention is using string and the connection structure of data double-way communication, wherein between master control borad 2 and individual-phase control fibre optic plate 6 Using protection 8 communication mode of optical fiber, 11 communication mode of parallel optical fibre is used between individual-phase control fibre optic plate 6 and power module 7.No Data signaling rate and data volume can be only taken into account, can also simply be controlled between each phase of power grid with independent realize.

Individual-phase control fibre optic plate 6 of the invention directly receives the voltage of whole power modules 7 of this phase, carries out to voltage Sequence, the voltage control mode of power module in phase is realized according to pulse rotation principle, is believed wherein not needing power module in phase The communication interaction of breath, power module voltage fluctuation of capacitor is smaller, and device stable operation ability is stronger.

The present invention can protect master control borad, individual-phase control fibre optic plate, power module using serial fiber optic protection signal Shield can carry out power module latch-up protection to device at once, entirely if certain individual-phase control fibre optic plate or power module break down Process can be completed in 5us, it is ensured that device is not damaged, and failure propagation is avoided to cause bigger loss.