CN205562706U - Passive contravariant test device of very bipolar flexible direct current - Google Patents
Passive contravariant test device of very bipolar flexible direct current Download PDFInfo
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- CN205562706U CN205562706U CN201620306331.2U CN201620306331U CN205562706U CN 205562706 U CN205562706 U CN 205562706U CN 201620306331 U CN201620306331 U CN 201620306331U CN 205562706 U CN205562706 U CN 205562706U
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- 238000012360 testing method Methods 0.000 title claims abstract description 130
- 238000005070 sampling Methods 0.000 claims abstract description 15
- 238000002474 experimental method Methods 0.000 claims abstract description 4
- 238000003556 assay Methods 0.000 claims description 10
- 238000000819 phase cycle Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The utility model relates to a passive contravariant test device of very bipolar flexible direct current. Include the experimental utmost point and antipodal, include still that utmost point control system reaches experimental utmost point voltage transformer, antipodal voltage transformer, electron mutual -inductor, the valve accuse system that is connected with this utmost point control system, still include a change of current valve, change of current valve with valve accuse headtotail is controlled by it, experimental utmost point voltage transformer is used for the experimental polar net side alternating voltage of sampling, antipodal voltage transformer is used for the sampling to polar net side alternating voltage, the electron mutual -inductor is used for the experimental utmost point valve side alternating voltage of sampling, utmost point control system is according to the voltage signal of experimental utmost point voltage transformer, antipodal voltage transformer, the sampling of electron mutual -inductor, control test operating condition extremely. The utility model discloses a very bipolar topological structure's passive contravariant experiment is in order to ensure that the valves triggers the exactness of phase sequence, also provides profitable reference for other similar engineerings simultaneously.
Description
Technical field
This utility model belongs to flexible DC power transmission engineering site test field, is specifically related to a kind of true bipolar flexible direct current passive inverter assay device.
Background technology
Flexible DC power transmission is the HVDC Transmission Technology of new generation with voltage source converter as core, use state-of-the-art voltage source converter (Voltage Source Converter, and full-controlled device (Insulated Gate Bipolar Transistor VSC), IGBT), it is the once upgrading of technology of transmission of electricity.Flexible direct current power transmission system can carry out independent regulation to meritorious and idle two targets rapidly, has the significant advantages such as controllability is preferable, the method for operation is flexible, applicable situation is many.Xiamen ± 320kV flexible DC power transmission science and technology demonstration project is the novel electric power passage of Xiamen Island, be in the world first use the most bipolar wiring flexible direct current, engineering debugging rawness can use for reference.
Flexible direct current converter valve equipment is expensive, in order to prevent unlocking the big circuit damage converter valve of appearance first, need to confirm polar control system by passive inverter test, the most correctly work between valve control system and converter valve, the phase angle difference that inspection control system compensates change of current change is the most correct, valve control system is performed time delay and tests to accomplish to be fully compensated at pole control system.But, in true bipolar topology flexible direct current typical wiring mode, only the change of current become high-pressure side configuration chopper and configuration of PT in the rear end of this chopper, this chopper disconnect after, control system loses reference voltage, it is impossible to carry out passive inverter test.Therefore, a set of effective and feasible device of necessary design realizes true bipolar topology flexible direct current transmission converter valve passive inverter and tests to guarantee that valve group triggers the correctness of phase sequence, the most also provides useful reference for other similar engineerings.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above, it is provided that a kind of true bipolar flexible direct current passive inverter assay device.
For achieving the above object, the technical solution of the utility model is: a kind of true bipolar flexible direct current passive inverter assay device, including test pole with to pole, also include polar control system and the test pole tension transformer being connected with this polar control system, to pole tension transformer, electric mutual inductor, valve control system, also include a converter valve, described converter valve is connected with described valve control system and is controlled, described test pole tension transformer is used for test polar net side alternating voltage of sampling, described to pole tension transformer for sampling to polar net side alternating voltage, described electric mutual inductor is used for test valve side, pole alternating voltage of sampling, described polar control system is according to test pole tension transformer, to pole tension transformer, the voltage signal of electronic transducer sampling, the duty of Control experiment pole.
In this utility model one embodiment, described test pole includes testing pole AC chopper, test pole bypass breaker, the female chopper switch in test pole I, the female chopper switch in test pole II, test pole outlet chopper switch, test pole the 4th chopper switch, test pole charging resistor, test pole converter power transformer and test pole brachium pontis reactor, the female bus of electrical network I is through the female chopper switch in described test pole I, test pole AC chopper, test pole outlet chopper switch, test pole the 4th chopper switch, test pole bypass breaker, test pole converter power transformer, test pole brachium pontis reactor is connected to described converter valve, described test pole charging resistor is parallel to bypass breaker two ends, described test pole, described test pole AC chopper is also connected through the female chopper switch in described test pole II bus female with electrical network II.
In this utility model one embodiment, the described circuit connection structure to pole is consistent with the circuit connection structure of test pole.
In this utility model one embodiment, described converter valve includes brachium pontis converter valve and lower brachium pontis converter valve.
In this utility model one embodiment, described test pole tension transformer is connected to the junction point between described test pole outlet chopper switch and test pole the 4th chopper switch, and described electric mutual inductor is connected to the junction point between described test pole converter power transformer and brachium pontis reactor.
Compared to prior art, this utility model has the advantages that
(1) to realize circuit simple for this utility model, it is only necessary to will be to pole alternating voltage USIt is linked into test pole polar control system to solve to test pole and disconnect after AC circuit breaker the problem without reference voltage；
(2) this utility model is by being analyzed the phase angle of test waveform, can confirm that and the most correctly works between polar control system, valve control system and converter valve, and the phase angle difference that the control system compensation change of current can be checked to become is the most correct；
(3) this utility model is that other similar engineerings provide useful reference.
Accompanying drawing explanation
Fig. 1 is that this utility model tests main wiring diagram.
Fig. 2 controls equipment wiring diagram.
Fig. 3 polar control system passive inverter controls logic chart.
Fig. 4 voltage on line side USWith valve side inverter voltage UVRecord ripple figure.
Fig. 5 modulating wave UrefWith valve side inverter voltage UVRecord ripple figure.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the technical solution of the utility model is specifically described.
As Figure 1-3, one of the present utility model true bipolar flexible direct current passive inverter assay device, including test pole with to pole, also include that polar control system and the test pole tension transformer being connected with this polar control system (test the U of pole in Fig. 1S), electric mutual inductor (U in Fig. 1V), valve control system and to pole tension transformer (U to pole in Fig. 1S), also include that (described converter valve includes brachium pontis converter valve V to converter valvePWith lower brachium pontis converter valve VN), described converter valve is connected with described valve control system and is controlled, described test pole tension transformer is used for test polar net side alternating voltage of sampling, described electric mutual inductor is used for test valve side, pole alternating voltage of sampling, described to pole tension transformer for sampling to polar net side alternating voltage, described polar control system is according to test pole tension transformer, electric mutual inductor and the voltage signal to pole tension mutual inductor sample, the duty of Control experiment pole.
nullIn this utility model，Described test pole includes testing pole AC chopper (testing the QF1 of pole in Fig. 1)、Test pole bypass breaker (testing the QF2 of pole in Fig. 1)、The female chopper switch (testing the DS1 of pole in Fig. 1) in test pole I、The female chopper switch (testing the DS2 of pole in Fig. 1) in test pole II、Test pole goes out cable brake switch (testing the DS3 of pole in Fig. 1)、Test pole the 4th chopper switch (testing the DS4 of pole in Fig. 1)、Test pole charging resistor (testing the R of pole in Fig. 1)、Test pole converter power transformer、Test pole brachium pontis reactor，The female bus of electrical network I is through the female chopper switch in described test pole I、Test pole AC chopper、Test pole the goes out cable brake switch、Test pole the 4th chopper switch、Test pole bypass breaker、Test pole converter power transformer、Test pole brachium pontis reactor is connected to described converter valve，Described test pole charging resistor is parallel to bypass breaker two ends, described test pole，Described test pole AC chopper is also connected through the female chopper switch (testing the DS2 of pole in Fig. 1) in described test pole II bus female with electrical network II.
In this utility model, the described circuit connection structure to pole is consistent with the circuit connection structure of test pole.
In this utility model, described test pole tension transformer is connected to the junction point between described test pole outlet chopper switch and test pole the 4th chopper switch, and described electric mutual inductor is connected to the junction point between described test pole converter power transformer and brachium pontis reactor.
It is of the present utility model that to implement step as follows:
(1) being in open position at test pole bypass breaker QF2, in the case of test pole AC circuit breaker Q F1 is in stand-by heat, converter valve is not controlled charging by circuit breaker Q F1 of closing.After polar control system detects that charging voltage is more than 0.6pu, time delay 10s sends startup converter valve submodule work order Dback_en.After waiting DC voltage stability, confirm that DC voltage is current valve side line voltage peak.
(2), after charging 20s, control system is automatically closed and is tested pole bypass breaker QF2.
(3) to pole when guaranteeing that pole isolates (DS4 is in gate-dividing state), AC circuit breaker Q F1 of closing, make this pole tension transformer USCharged.
(4) to test pole and the alternating voltage U to poleSSecondary voltage nuclear phase is carried out, it is ensured that two pole AC secondary voltages are consistent under homology state.
(5), after nuclear phase is correct, the secondary alternating voltage of pole will be accessed test pole polar control system, as the reference voltage of passive inverter test by switching switch K.
(6) open test pole AC circuit breaker Q F1, control system is detecting that the most automatically starting control system after this chopper disconnects records wave energy, and time delay 20ms sends unlocking command Deblock, carries out passive inverter test.
(7) in order to prevent valve submodule from causing bypass count too much because voltage reduces, after unlocking 200ms, unlocking command, locking converter valve are i.e. regained.
(8) after test pole AC chopper disconnects 1s, regaining Dback_en instruction, submodule quits work.
(9) valve inverter voltage U in recorded wave file is analyzedVWith reference voltage USPhase relation whether correct, and calculate valve control and perform time delay (control system sends modulating wave UrefWith valve inverter voltage UVTime difference).
This converter valve passive inverter test method Successful utilization in Xiamen ± the 320kV flexible DC power transmission charged debugging of science and technology demonstration project fielded system, result of the test is as shown in Fig. 4 and table 1.
Note: it is YD7 that the change of current becomes wiring group, converter valve passive inverter voltage UVPhase place is with voltage on line side USOn the basis of A phase, test advance phase place.
The result of the test explanation voltage on valve side Uv phase sequence of Fig. 4 and Biao 1 is positive sequence, corresponding with voltage on line side Us phase relation and converter power transformer wiring group YD7.The correctness that valve group triggers the correctness proof of phase sequence pole Control protection system, works between valve base control system and converter valve, it is ensured that the safety of converter valve.
Fig. 5 waveform is carried out test and can obtain the valve control system execution time delay shown in table 2, in polar control system, this time delay can be compensated accordingly, the electric current unlocking moment under active can be effectively reduced.
Note: test modulating wave UrefWith valve inverter voltage UVEach phase time difference.
It is above preferred embodiment of the present utility model, all changes made according to technical solutions of the utility model, when produced function is without departing from the scope of technical solutions of the utility model, belong to protection domain of the present utility model.
Claims (5)
1. a true bipolar flexible direct current passive inverter assay device, it is characterized in that: include testing pole and to pole, also include polar control system and the test pole tension transformer being connected with this polar control system, to pole tension transformer, electric mutual inductor, valve control system, also include a converter valve, described converter valve is connected with described valve control system and is controlled, described test pole tension transformer is used for test polar net side alternating voltage of sampling, described to pole tension transformer for sampling to polar net side alternating voltage, described electric mutual inductor is used for test valve side, pole alternating voltage of sampling, described polar control system is according to test pole tension transformer, to pole tension transformer, the voltage signal of electronic transducer sampling, the duty of Control experiment pole.
nullOne the most according to claim 1 true bipolar flexible direct current passive inverter assay device，It is characterized in that: described test pole includes testing pole AC chopper、Test pole bypass breaker、The female chopper switch in test pole I、The female chopper switch in test pole II、Test pole outlet chopper switch、Test pole the 4th chopper switch、Test pole charging resistor、Test pole converter power transformer and test pole brachium pontis reactor，The female bus of electrical network I is through the female chopper switch in described test pole I、Test pole AC chopper、Test pole outlet chopper switch、Test pole the 4th chopper switch、Test pole bypass breaker、Test pole converter power transformer、Test pole brachium pontis reactor is connected to described converter valve，Described test pole charging resistor is parallel to bypass breaker two ends, described test pole，Described test pole AC chopper is also connected through the female chopper switch in described test pole II bus female with electrical network II.
One the most according to claim 1 and 2 true bipolar flexible direct current passive inverter assay device, it is characterised in that: the described circuit connection structure to pole is consistent with the circuit connection structure of test pole.
One the most according to claim 2 true bipolar flexible direct current passive inverter assay device, it is characterised in that: described converter valve includes brachium pontis converter valve and lower brachium pontis converter valve.
One the most according to claim 2 true bipolar flexible direct current passive inverter assay device, it is characterized in that: described test pole tension transformer is connected to the junction point between described test pole outlet chopper switch and test pole the 4th chopper switch, and described electric mutual inductor is connected to the junction point between described test pole converter power transformer and brachium pontis reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620306331.2U CN205562706U (en) | 2016-04-13 | 2016-04-13 | Passive contravariant test device of very bipolar flexible direct current |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620306331.2U CN205562706U (en) | 2016-04-13 | 2016-04-13 | Passive contravariant test device of very bipolar flexible direct current |
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| CN205562706U true CN205562706U (en) | 2016-09-07 |
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| CN201620306331.2U Expired - Fee Related CN205562706U (en) | 2016-04-13 | 2016-04-13 | Passive contravariant test device of very bipolar flexible direct current |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823945A (en) * | 2016-04-13 | 2016-08-03 | 国网福建省电力有限公司 | True bipolar flexible direct current passive inversion test device and test method |
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2016
- 2016-04-13 CN CN201620306331.2U patent/CN205562706U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823945A (en) * | 2016-04-13 | 2016-08-03 | 国网福建省电力有限公司 | True bipolar flexible direct current passive inversion test device and test method |
| CN105823945B (en) * | 2016-04-13 | 2018-10-23 | 国网福建省电力有限公司 | A kind of true bipolar flexible direct current passive inverter experimental rig and test method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 |
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| CF01 | Termination of patent right due to non-payment of annual fee |