CN102591319A - Test device and test method for STATCOM (Static Synchronous Compensator) controller - Google Patents
Test device and test method for STATCOM (Static Synchronous Compensator) controller Download PDFInfo
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- CN102591319A CN102591319A CN2011104057560A CN201110405756A CN102591319A CN 102591319 A CN102591319 A CN 102591319A CN 2011104057560 A CN2011104057560 A CN 2011104057560A CN 201110405756 A CN201110405756 A CN 201110405756A CN 102591319 A CN102591319 A CN 102591319A
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Abstract
The invention provides a test device and a test method for an STATCOM (Static Synchronous Compensator) controller and belongs to the technical field of reactive compensation. The test device comprises a system power supply, a transformer, a voltage disturbing generation device, a switch circuit, a test main circuit and a control protection system, wherein the system power supply, the transformer, the switch circuit and the test main circuit are sequentially connected in series; and the voltage disturbing generation device is connected with the transformer in parallel. The test device has the advantages of dynamic continuous reactive compensation, high adjustment speed, wide adjustment range, strong undervoltage reactive adjusting capability, low harmonic content, no resonance for accessing a power system. The test method is simple and reliable; and according to the test method, various work conditions of faults of the power system can be constructed and the test verification requirement on an STATCOM control strategy is met.
Description
Technical field
The invention belongs to the reactive power compensation technology field, be specifically related to a kind of test unit and method of the STATCOM of being used for controller.
Background technology
At present, most emulation technologies that adopt, the model of setting up control system is verified the feasibility and the correctness of the control strategy of design; Though certain reference can be provided for the exploitation of control system; But can not test to controller, can't reflect the actual condition of system, lack test basis.Also there is the real-timedigital simulation of employing technology to set up controller and the control strategy that system model is verified design.Such as; The HYPERSIM of the Power System Real-time digital simulator RTDS (Real Time Digital Simulator) of Canada exploitation, the development of Canadian TEQSM company, the ARENE of Electricite De France's exploitation etc.; On the one hand, the real-timedigital simulation equipment cost is higher usually; On the other hand, chain static synchronous compensator series connection progression is more usually, and each chain link control signal is different, and the interface circuit between equipment and controller, the STATCOM is complicated.These have all limited the application of real-timedigital simulation technology in chain static synchronous compensator.
STATCOM STATCOM (Static Synchronous Compensator); It is a kind of novel static reacance dynamic compensating device; Voltage source converter by parallelly connected connecting system constitutes, and the capacitive of its output or perceptual reactive current are continuous, adjustable and be independent of the voltage with system's tie point.It is to be core with voltage source converter VSC; It is energy-storage travelling wave tube that DC side adopts direct current capacitors, utilizes turn-off device to convert dc voltage to the electrical network same frequency alternating voltage, and is connected in parallel on the electrical network through connecting reactor; Suitably regulate AC side output voltage amplitude and phase place; Perhaps directly control its ac-side current, device is absorbed perhaps send the reactive current that meets the demands, realize the purpose of dynamic passive compensation.When only considering fundamental frequency, the alternating-current voltage source of of can be regarded as equivalently that amplitude and phase place all can control of STATCOM and electrical network same frequency.
The STATCOM device is through configuration Different control strategy, can keep or aspects such as Control Node voltage, the static state that improves circuit transport capacity, power oscillation damping, raising system and transient stability play an important role; And STATCOM is to the electric system effect time, and the static state of electric system and transient state process all can influence the operation of STATCOM in various degree, particularly under system failure situation, and the sudden change of the service condition of STATCOM.At this moment, what at first should consider is the safety of STATCOM itself, and next is only the performance of its effect; Therefore, should consider the control of device itself, also want the control of taking into account system; The control strategy of design different levels; Improving the viability of STATCOM device, and avoid device to withdraw from the disturbance that system is caused, that its control strategy mainly is divided into is system-level, device level and bottom control.
System-level control strategy mainly is divided into Steady-State Control pattern and transient control mode.The Steady-State Control pattern is divided into permanent idle pattern and constant voltage mode.Under the idle service condition of perseverance, STATCOM will export constant reactive power, and the idle desired value of exerting oneself can be set to specified lagging reactive power from specified capacitive reactive power; Under the constant voltage service condition, STATCOM is a target with systems stabilisation voltage, the reactive power of self-checking device output.
Transient control mode be the inner various faults of structure STATCOM, system side voltage under transient operating mode temporary liter, fall temporarily, single-phase, two-phase, three equates faults, with access control device and control strategy.
For the feasibility and the correctness of the control strategy that guarantees to design, need take corresponding means to test.Whether at present, simulation software commonly used sets up the model of control system, feasible with the control strategy that checking is designed.This kind method can provide certain reference and guidance for the exploitation of control system, yet can not reflect the actual condition of system, lacks certain test basis.
Summary of the invention
In order to overcome the deficiency of above-mentioned prior art, the present invention provides a kind of test unit and method of the STATCOM of being used for controller; The dynamic continuous reactive of this test unit compensates, governing speed is fast, range of adjustment is wide, under-voltage idle regulating power is strong down, harmonic content is low, insert electric system does not have resonance; Test method is simple and reliable; Can construct the operating mode of various electric power system faults, satisfy verification experimental verification requirement the STATCOM control strategy.
In order to realize the foregoing invention purpose, the present invention adopts following technical scheme:
A kind of test unit that is used for the STATCOM controller, said test unit comprises system power supply, comprises power supply, system impedance and contactor, is used for to said test unit power supply; Transformer is used to change voltage, and network system voltage and test unit voltage are complementary; The voltage disturbance generating means is used to construct the voltage of testing the main circuit access point; The switch loop is used to realize that said test main circuit inserts and withdraws from; The control protection system is used to control and protect the operation and the operation of whole device; With the test main circuit, be used to test the action logic of STATCOM.
Said system power supply, transformer, switch loop and test main circuit are connected successively, and said voltage disturbance generating means input side is parallelly connected with said system power supply output terminal, and outgoing side is connected between said transformer and the switch loop.
Said voltage disturbance generating means comprises starting switch QF2, soft loop, three-phase rectifier transformer, three-phase back-to-back converter and three-phase filtering circuit.
Said soft loop comprises soft resistance R4 and the by-pass switch QF4 parallelly connected with it.
Said three-phase rectifier transformer is a multiwinding transformer, and said multiwinding transformer is three-phase separated transformer or three-phase integrated transformer; The input end of every phase back-to-back converter is connected with the output terminal of every commutating phase transformer, and its output terminal connects with every filtering circuit mutually.
Said every phase filtering circuit comprises inductance, resistance and electric capacity, and parallelly connected with said voltage disturbance generating means output terminal after said resistance and the capacitances in series, said inductance is connected with voltage disturbance generating means output terminal.
Said switch loop comprises lightning arrester F, fuse F U2, voltage transformer (VT) and switch QF1; Said lightning arrester F is used for the overvoltage protection of said test main circuit.
Said test main circuit comprises successively the H type chain link of current transformer, the reactor of series connection, soft loop and cascade;
Said current transformer is used to detect electric current;
Said reactor is used to suppress the higher harmonic current that said H type chain link produces;
The dc capacitor of said H type chain link plays the voltage supporting role.
Said soft loop comprises soft resistance and the by-pass switch parallelly connected with it.
Said control protection system comprises background work station, communication manager, supervisory system, controller, three-phase change of current chain phase control unit and three-phase change of current chain element controller on the spot.
Said test unit realizes that through at said voltage disturbance generating means output terminal parallel connection by-pass switch or through said every phase back-to-back converter no-voltage output said voltage disturbance generating means withdraws from said test unit.
A kind of test method that is used for the STATCOM controller, said test method may further comprise the steps:
(1) the circuit breaker Q Z of closed said system power supply;
(2) closed said starting switch QF2;
(3) said soft resistance is given the charging of the direct current capacitors in the said three-phase back-to-back converter;
(4) after said direct current capacitors reaches stable state, the by-pass switch QF4 in closed said soft loop;
(5) closed said switch QF1, said test main circuit is given said each chain link dc bus charging through said soft resistance;
(6) after charging reached and stablizes, the by-pass switch of closed said test main circuit was controlled each chain link output pwm pulse with soft resistance bypass;
(7) said test main circuit output voltage of control and said test main circuit access point voltage same-phase, said test main circuit drops into operate as normal;
(8) the said three-phase back-to-back converter of control makes the inverter voltage of its output amplitude and phase change, is superimposed upon in the said test main circuit;
(9) the various faults of simulation electric system;
(10) the transient state control strategy of checking STATCOM controller.
Compare with prior art, beneficial effect of the present invention is:
1. the dynamic continuous reactive of test unit compensates, governing speed is fast, range of adjustment is wide, under-voltage idle regulating power is strong down, harmonic content is low, insert electric system does not have resonance;
2. test method is simple and reliable, can construct the operating mode of various electric power system faults, satisfies the verification experimental verification requirement to STATCOM control;
3. test method has solved the difficult problem of control test, for the exploitation of STATCOM controller provides foundation and reference.
Description of drawings
Fig. 1 is control protection system overall framework figure;
Fig. 2 is the circuit diagram in test main circuit and switch loop;
Fig. 3 is the test unit overall construction drawing.
Embodiment
SVC STATCOM has that idle governing speed is fast, range of adjustment is wide, idle regulating power is strong under the undervoltage condition, harmonic content is lower, floor area is more less, connecting system does not have each item advantages such as resonance, can keep or aspects such as Control Node voltage, the static state that improves circuit transport capacity, power oscillation damping, raising system and transient stability play an important role.
In order to realize the function of SVC STATCOM; Need perfect, the reliable and stable control protection system of configuration feature; Like Fig. 1, said control protection system comprises background work station, communication manager, supervisory system, controller, three-phase change of current chain phase control unit and three-phase change of current chain element controller on the spot; When controller has sampling, control protection, record ripple, school, functions such as input and output and communication.Three-phase change of current chain phase control unit has communication function, accomplishes each phase STATCOM adjusting defencive function and and this transmission of data between all cell controllers mutually.Communication network is used for the communication of man-machine interface and each control module, accomplishes SOE transmission, definite value parameter and operational mode and issues the transmission of recorder data etc.Communication manager is used for the stipulations conversion, realizes the communication with the backstage.All there be hard the blockade and hard interrupt request optical fiber between controller and the phase control unit and between the phase control unit, be used for to block three-phase fast after the fault.
Like Fig. 2, said switch loop comprises lightning arrester F, fuse F U2, voltage transformer (VT) and switch QF1; Said lightning arrester F is used for the overvoltage protection of said test main circuit.
Said test main circuit comprises successively the H type chain link of current transformer, the reactor of series connection, soft loop and cascade;
Said current transformer is used to detect electric current;
Said reactor is used to suppress the higher harmonic current that said H type chain link produces;
The dc capacitor of said H type chain link plays the voltage supporting role.
Said soft loop comprises soft resistance and the by-pass switch parallelly connected with it.
Like Fig. 3, a kind of test unit that is used for the STATCOM controller, said test unit comprises system power supply, comprises power supply, system impedance and contactor, is used for to said test unit power supply; Transformer is used to change voltage, and network system voltage and test unit voltage are complementary; The voltage disturbance generating means is used to construct the voltage of testing the main circuit access point; The switch loop is used to realize that said test main circuit inserts and withdraws from; The control protection system is used to control and protect the operation and the operation of whole device; With the test main circuit, be used to test the action logic of STATCOM.
Said system power supply, transformer, switch loop and test main circuit are connected successively, and said voltage disturbance generating means input side is parallelly connected with said system power supply output terminal, and outgoing side is connected between said transformer and the switch loop.
Said voltage disturbance generating means comprises starting switch QF2, soft loop, three-phase rectifier transformer, three-phase back-to-back converter and three-phase filtering circuit.
Said soft loop comprises soft resistance R4 and the by-pass switch QF4 parallelly connected with it.
Said three-phase rectifier transformer is a multiwinding transformer, and said multiwinding transformer is three-phase separated transformer or three-phase integrated transformer; The input end of every phase back-to-back converter is connected with the output terminal of every commutating phase transformer, and its output terminal connects with every filtering circuit mutually.
Said every phase filtering circuit comprises inductance, resistance and electric capacity, and parallelly connected with said voltage disturbance generating means output terminal after said resistance and the capacitances in series, said inductance is connected with voltage disturbance generating means output terminal.
Closed and said voltage disturbance generating means output terminal parallel connection by-pass switch A, B and C or export through said every no-voltage of back-to-back converter mutually realize that said voltage disturbance generating means withdraws from said test unit.
A kind of test method that is used for the STATCOM controller, said test method may further comprise the steps:
(1) the circuit breaker Q Z of closed said system power supply;
(2) closed said starting switch QF2;
(3) said soft resistance is given the charging of the direct current capacitors in the said three-phase back-to-back converter;
(4) after said direct current capacitors reaches stable state, the by-pass switch QF4 in closed said soft loop;
(5) closed said switch QF1, said test main circuit is given said each chain link dc bus charging through said soft resistance;
(6) after charging reached and stablizes, the by-pass switch of closed said test main circuit was controlled each chain link output pwm pulse with soft resistance bypass;
(7) said test main circuit output voltage of control and said test main circuit access point voltage same-phase, said test main circuit drops into operate as normal;
(8) the said three-phase back-to-back converter of control makes the inverter voltage of its output amplitude and phase change, is superimposed upon in the said test main circuit;
(9) the various faults of simulation electric system;
(10) the transient state control strategy of checking STATCOM controller.
Claims (13)
1. test unit that is used for the STATCOM controller, it is characterized in that: said test unit comprises
System power supply comprises power supply, system impedance and contactor, is used for to said test unit power supply;
Transformer is used to change voltage, and network system voltage and test unit voltage are complementary;
The voltage disturbance generating means is used to construct the voltage of testing the main circuit access point;
The switch loop is used to realize that said test main circuit inserts and withdraws from;
The control protection system is used to control and protect the operation and the operation of whole device; With
Test main circuit, be used to test the action logic of STATCOM.
2. a kind of test unit that is used for the STATCOM controller according to claim 1; It is characterized in that: said system power supply, transformer, switch loop and test main circuit are connected successively; Said voltage disturbance generating means input side is parallelly connected with said system power supply output terminal, and outgoing side is connected between said transformer and the switch loop.
3. according to the arbitrary described a kind of test unit that is used for the STATCOM controller of claim 1-2, it is characterized in that: said voltage disturbance generating means comprises starting switch QF2, soft loop, three-phase rectifier transformer, three-phase back-to-back converter and three-phase filtering circuit.
4. a kind of test unit that is used for the STATCOM controller according to claim 3 is characterized in that: said soft loop comprises soft resistance R4 and the by-pass switch QF4 parallelly connected with it.
5. a kind of test unit that is used for the STATCOM controller according to claim 3 is characterized in that: said three-phase rectifier transformer is a multiwinding transformer, and said multiwinding transformer is three-phase separated transformer or three-phase integrated transformer.
6. a kind of test unit that is used for the STATCOM controller according to claim 5 is characterized in that: the input end of every phase back-to-back converter is connected with the output terminal of every commutating phase transformer, and its output terminal connects with every filtering circuit mutually.
7. a kind of test unit that is used for the STATCOM controller according to claim 6; It is characterized in that: said every phase filtering circuit comprises inductance, resistance and electric capacity; Parallelly connected with said voltage disturbance generating means output terminal after said resistance and the capacitances in series, said inductance is connected with voltage disturbance generating means output terminal.
8. a kind of test unit that is used for the STATCOM controller according to claim 1 is characterized in that: said switch loop comprises lightning arrester F, fuse F U2, voltage transformer (VT) and switch QF1; Said lightning arrester F is used for the overvoltage protection of said test main circuit.
9. according to the arbitrary described a kind of test unit that is used for the STATCOM controller of claim 1-2, it is characterized in that: said test main circuit comprises successively the H type chain link of current transformer, the reactor of series connection, soft loop and cascade;
Said current transformer is used to detect electric current;
Said reactor is used to suppress the higher harmonic current that said H type chain link produces;
The dc capacitor of said H type chain link plays the voltage supporting role.
10. a kind of test unit that is used for the STATCOM controller according to claim 9 is characterized in that: said soft loop comprises soft resistance and the by-pass switch parallelly connected with it.
11. a kind of test unit that is used for the STATCOM controller according to claim 1 is characterized in that: said control protection system comprises background work station, communication manager, supervisory system, controller, three-phase change of current chain phase control unit and three-phase change of current chain element controller on the spot.
12. a kind of test unit that is used for the STATCOM controller according to claim 1; It is characterized in that: said test unit realizes that through at said voltage disturbance generating means output terminal parallel connection by-pass switch or through said every phase back-to-back converter no-voltage output said voltage disturbance generating means withdraws from said test unit.
13. a test method that is used for the STATCOM controller is characterized in that: said test method may further comprise the steps:
(1) the circuit breaker Q Z of closed said system power supply;
(2) closed said starting switch QF2;
(3) said soft resistance is given the charging of the direct current capacitors in the said three-phase back-to-back converter;
(4) after said direct current capacitors reaches stable state, the by-pass switch QF4 in closed said soft loop;
(5) closed said switch QF1, said test main circuit is given said each chain link dc bus charging through said soft resistance;
(6) after charging reached and stablizes, the by-pass switch of closed said test main circuit was controlled each chain link output pwm pulse with soft resistance bypass;
(7) said test main circuit output voltage of control and said test main circuit access point voltage same-phase, said test main circuit drops into operate as normal;
(8) the said three-phase back-to-back converter of control makes the inverter voltage of its output amplitude and phase change, is superimposed upon in the said test main circuit;
(9) the various faults of simulation electric system;
(10) the transient state control strategy of checking STATCOM controller.
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| CN103856090A (en) * | 2014-03-14 | 2014-06-11 | 宁波理工电力电子设备有限公司 | Cascaded multi-electric-level power converter control device and method based on IGBTs |
| CN103955141A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Test circuit and method for low-voltage physical model of unified power flow controller |
| CN103984239A (en) * | 2014-02-13 | 2014-08-13 | 国家电网公司 | WAMS-based multi-FACTS coordination control digital-analog mixing simulation platform |
| CN104037779A (en) * | 2014-05-16 | 2014-09-10 | 南方电网科学研究院有限责任公司 | Compatible platform system of multiple sets of static synchronous compensators and switching arbitration method thereof |
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| CN106885962A (en) * | 2017-03-27 | 2017-06-23 | 南方电网科学研究院有限责任公司 | STATCOM test method and system |
| CN108802557A (en) * | 2018-06-28 | 2018-11-13 | 安徽康能电气有限公司 | A kind of fault locator based on disturbing signal |
| CN108802575A (en) * | 2018-07-05 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of line fault localization method, apparatus and system based on power disturbance method |
| CN109905047A (en) * | 2019-03-15 | 2019-06-18 | 南京工程学院 | A kind of MMC-STATCOM self-adaptive redundant operation method |
| TWI745203B (en) * | 2020-12-28 | 2021-11-01 | 國家中山科學研究院 | Split-phase active power adjustment method for static synchronous compensator |
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| CN103955141A (en) * | 2014-05-09 | 2014-07-30 | 国家电网公司 | Test circuit and method for low-voltage physical model of unified power flow controller |
| CN104037779A (en) * | 2014-05-16 | 2014-09-10 | 南方电网科学研究院有限责任公司 | Compatible platform system of multiple sets of static synchronous compensators and switching arbitration method thereof |
| CN104037779B (en) * | 2014-05-16 | 2016-06-29 | 南方电网科学研究院有限责任公司 | Compatible platform system of multiple sets of static synchronous compensators and switching arbitration method thereof |
| CN104764951A (en) * | 2015-03-16 | 2015-07-08 | 国网河南省电力公司电力科学研究院 | 380 V voltage class APF testing platform and testing method |
| CN106885962A (en) * | 2017-03-27 | 2017-06-23 | 南方电网科学研究院有限责任公司 | STATCOM test method and system |
| CN106885962B (en) * | 2017-03-27 | 2019-08-23 | 南方电网科学研究院有限责任公司 | STATCOM test method and system |
| CN108802557A (en) * | 2018-06-28 | 2018-11-13 | 安徽康能电气有限公司 | A kind of fault locator based on disturbing signal |
| CN108802575A (en) * | 2018-07-05 | 2018-11-13 | 云南电网有限责任公司电力科学研究院 | A kind of line fault localization method, apparatus and system based on power disturbance method |
| CN109905047A (en) * | 2019-03-15 | 2019-06-18 | 南京工程学院 | A kind of MMC-STATCOM self-adaptive redundant operation method |
| TWI745203B (en) * | 2020-12-28 | 2021-11-01 | 國家中山科學研究院 | Split-phase active power adjustment method for static synchronous compensator |
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