CN205861860U - High voltage DC breaker subsidiary loop parameter of oscillation test device - Google Patents
High voltage DC breaker subsidiary loop parameter of oscillation test device Download PDFInfo
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- CN205861860U CN205861860U CN201620772220.0U CN201620772220U CN205861860U CN 205861860 U CN205861860 U CN 205861860U CN 201620772220 U CN201620772220 U CN 201620772220U CN 205861860 U CN205861860 U CN 205861860U
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- brake pipe
- silicon controlled
- controlled crystal
- commutation bridge
- phase commutation
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Abstract
This utility model relates to a kind of high voltage DC breaker subsidiary loop parameter of oscillation test device, solves existing test circuit and exists and repeat wiring and by the big problem of external interference signal.Including three-phase regulator (6), three-phase commutation bridge (7), oscillograph (10) and high voltage DC breaker (1), the outfan of three-phase commutation bridge (7) connects and has voltmeter (8), the output plus terminal of three-phase commutation bridge (7) connects and has the colelctor electrode of the first silicon controlled crystal brake pipe (11), the emitter stage of the first silicon controlled crystal brake pipe (11) and the colelctor electrode of the second silicon controlled crystal brake pipe (12) are connected with a pole plate of capacitor (4) after connecting, the emitter stage of the second silicon controlled crystal brake pipe (12) is connected with the output negative terminal of three-phase commutation bridge (7) by oscillograph (10), another pole plate of capacitor (4) is connected with the output negative terminal of three-phase commutation bridge (7).Improve accuracy and the reliability of the characterisitic parameter field measurement of subsidiary loop.
Description
Technical field
The invention belongs to high-voltage appliance switch field.Shake particularly to supertension or extra-high voltage direct-current chopper subsidiary loop
Swing characteristic parameter testing device and method of testing thereof.
Background technology
High voltage DC breaker is a kind of to use oscillation circuit to produce zero crossing to carry out the special key that turns off, be mainly used in
Turn off high-voltage direct current.In current conversion station, generally having the high-voltage direct current switch of four kinds of forms, respectively metallic return conversion is disconnected
Road device (MRTB), neutral bus switch (NBS), neutral bus earthed switch (NBGS) and Ground return permutator (GRTS).
They play a part permutator, are mainly used in the conversion of the various method of operation of DC transmission system, as earthed system conversion,
Troubleshooting etc..Owing to DC current is without natural zero-crossing point, making electric arc in fracture be difficult to extinguish, therefore, AC circuit breaker can not
It is directly used in breaking direct current, it is necessary to use the high voltage DC breaker being made up of AC circuit breaker and conversing circuits to realize straight
Stream effectively the cut-offfing of electric current, i.e. an oscillation circuit being made up of electric capacity and inductance in parallel between fracture, forces to form electric current
Zero crossing.In order to ensure high voltage DC breaker reliably and effectively breaking direct current, need high voltage DC breaker is shaken
Swing loop characteristic parameter to test, the frequency of this oscillation circuit and the necessary field measurement of damping resistance, confirm that it meets regulation
After, the reliability service of guarantee high voltage DC breaker.At present, high voltage DC breaker subsidiary loop parameter of oscillation test electricity
Road exists repeats wiring and by the big problem of external interference effect of signals, and test process there is also bigger potential safety hazard simultaneously.
Summary of the invention
The invention provides a kind of high voltage DC breaker subsidiary loop parameter of oscillation test device, solve existing survey
Examination circuit exists and repeats wiring and by the big technical problem of external interference effect of signals.
The present invention is to solve above technical problem by the following technical programs:
A kind of high voltage DC breaker subsidiary loop parameter of oscillation test device, including three-phase regulator, three-phase commutation bridge,
Oscillograph and the high voltage DC breaker being made up of AC circuit breaker, inducer, capacitor and spark gap, three-phase regulator and three
The rectification input of commutating phase bridge links together, and connecting on the outfan of three-phase commutation bridge has voltmeter, at three phase rectifier
Connecting on the output plus terminal of bridge and have the colelctor electrode of the first silicon controlled crystal brake pipe, the emitter stage of the first silicon controlled crystal brake pipe and second can
After the colelctor electrode connection of control silicon wafer brake tube, a pole plate with capacitor links together, the emitter stage of the second silicon controlled crystal brake pipe
Being linked together by the output negative terminal of oscillograph with three-phase commutation bridge, another pole plate of capacitor is defeated with three-phase commutation bridge
Go out negative terminal to link together, silicon controlled crystal brake pipe driver silicon wafer controlled with the base stage of the first silicon controlled crystal brake pipe and second respectively
The base stage of brake tube links together.
A kind of high voltage DC breaker subsidiary loop parameter of oscillation method of testing, comprises the following steps:
The first step, the rectification input of three-phase regulator with three-phase commutation bridge is linked together, at three-phase commutation bridge
Connect voltmeter on outfan, the output plus terminal of three-phase commutation bridge connects the colelctor electrode of the first silicon controlled crystal brake pipe, first
After the emitter stage of silicon controlled crystal brake pipe and the colelctor electrode connection of the second silicon controlled crystal brake pipe, a pole plate with capacitor is connected to
Together, the emitter stage of the second silicon controlled crystal brake pipe is linked together by the output negative terminal of oscillograph with three-phase commutation bridge, electric capacity
Another pole plate of device links together with the output negative terminal of three-phase commutation bridge, and silicon controlled crystal brake pipe driver respectively can with first
The base stage of control silicon wafer brake tube and the base stage of the second silicon controlled crystal brake pipe link together；
Second step, disconnection AC circuit breaker, connect 380 volts of power supplys of three-phase alternating current on the input of three-phase regulator, logical
Crossing three-phase commutation bridge and be rectified into unidirectional current, silicon controlled crystal brake pipe driver control the first silicon controlled crystal brake pipe turns on, to capacitor
Being charged, monitor charging voltage with voltmeter, after reaching scheduled voltage, silicon controlled crystal brake pipe driver control first can
Control silicon wafer brake tube cut-off；
3rd step, connection AC circuit breaker, then AC circuit breaker, capacitor and inducer composition closed-loop path, lead to simultaneously
Cross the conducting of silicon controlled crystal brake pipe driver control the second silicon controlled crystal brake pipe, the electricity at capacitor two ends can be obtained by oscillograph
Buckling waveform, thus obtain the frequency values of high voltage DC breaker, conversing circuits inductance value and conversing circuits damping resistance.
This test device reduces the impact of on-the-spot external interference, improves the spies such as the frequency of subsidiary loop, damping resistance
The accuracy of property parameter field measurement and reliability.On the other hand, this test device have employed controlled IGBT, it is achieved charge circuit
Automatic switchover with oscillograph measure loop, it is ensured that the personal safety of tester and equipment safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of high voltage DC breaker subsidiary loop parameter of oscillation test device, including three-phase regulator 6, three-phase commutation bridge
7, oscillograph 10 and the high voltage DC breaker 1 that is made up of AC circuit breaker 2, inducer 3, capacitor 4 and spark gap 5, three-phase
Pressure regulator 6 links together with the rectification input of three-phase commutation bridge 7, and connecting on the outfan of three-phase commutation bridge 7 has voltage
Table 8, connects on the output plus terminal of three-phase commutation bridge 7 and has the colelctor electrode of the first silicon controlled crystal brake pipe 11, the first controlled silicon wafer lock
After the emitter stage of pipe 11 and the colelctor electrode connection of the second silicon controlled crystal brake pipe 12, a pole plate with capacitor 4 links together,
The emitter stage of the second silicon controlled crystal brake pipe 12 is linked together by the output negative terminal of oscillograph 10 with three-phase commutation bridge 7, electric capacity
Another pole plate of device 4 links together with the output negative terminal of three-phase commutation bridge 7, and silicon controlled crystal brake pipe driver 9 is respectively with
The base stage of one silicon controlled crystal brake pipe 11 and the base stage of the second silicon controlled crystal brake pipe 12 link together.
A kind of high voltage DC breaker subsidiary loop parameter of oscillation method of testing, comprises the following steps:
The first step, the rectification input of three-phase regulator 6 with three-phase commutation bridge 7 is linked together, at three-phase commutation bridge 7
Outfan on connect voltmeter 8, the output plus terminal of three-phase commutation bridge 7 connects the current collection of the first silicon controlled crystal brake pipe 11
With the one of capacitor 4 after pole, the emitter stage of the first silicon controlled crystal brake pipe 11 and the colelctor electrode connection of the second silicon controlled crystal brake pipe 12
Individual pole plate links together, and the emitter stage of the second silicon controlled crystal brake pipe 12 is born by the output of oscillograph 10 with three-phase commutation bridge 7
End links together, and another pole plate of capacitor 4 links together with the output negative terminal of three-phase commutation bridge 7, controlled silicon wafer lock
Pipe driver 9 links together with the base stage of the first silicon controlled crystal brake pipe 11 and the base stage of the second silicon controlled crystal brake pipe 12 respectively；
Second step, disconnection AC circuit breaker 2, connect 380 volts of power supplys of three-phase alternating current on the input of three-phase regulator 6,
Being rectified into unidirectional current by three-phase commutation bridge 7, silicon controlled crystal brake pipe driver 9 controls the first silicon controlled crystal brake pipe 11 and turns on, right
Capacitor 4 is charged, and monitors charging voltage with voltmeter 8, and after reaching scheduled voltage, silicon controlled crystal brake pipe driver 9 is controlled
Make the first silicon controlled crystal brake pipe 11 to end；
3rd step, connection AC circuit breaker 2, then AC circuit breaker 2, capacitor 4 and inducer 3 form closed-loop path, with
Time control the second silicon controlled crystal brake pipe 12 turn on by silicon controlled crystal brake pipe driver 9, electric capacity can be obtained by oscillograph 10
The change in voltage waveform at device 4 two ends, thus obtain the frequency values of high voltage DC breaker 1, conversing circuits inductance value and convert back
Roadlock buffer resistance.
Claims (1)
1. a high voltage DC breaker subsidiary loop parameter of oscillation test device, including three-phase regulator (6), three-phase commutation bridge
(7), oscillograph (10) and the HVDC that is made up of AC circuit breaker (2), inducer (3), capacitor (4) and spark gap (5)
Chopper (1), three-phase regulator (6) links together with the rectification input of three-phase commutation bridge (7), in three-phase commutation bridge (7)
Outfan on connect have voltmeter (8)；It is characterized in that, the output plus terminal of three-phase commutation bridge (7) connects have first can
The colelctor electrode of control silicon wafer brake tube (11), the emitter stage of the first silicon controlled crystal brake pipe (11) and the collection of the second silicon controlled crystal brake pipe (12)
After electrode connection, a pole plate with capacitor (4) links together, and the emitter stage of the second silicon controlled crystal brake pipe (12) is by showing
Ripple device (10) links together with the output negative terminal of three-phase commutation bridge (7), another pole plate of capacitor (4) and three-phase commutation bridge
(7) output negative terminal links together, silicon controlled crystal brake pipe driver (9) respectively with the base stage of the first silicon controlled crystal brake pipe (11)
Link together with the base stage of the second silicon controlled crystal brake pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620772220.0U CN205861860U (en) | 2016-07-21 | 2016-07-21 | High voltage DC breaker subsidiary loop parameter of oscillation test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620772220.0U CN205861860U (en) | 2016-07-21 | 2016-07-21 | High voltage DC breaker subsidiary loop parameter of oscillation test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861860U true CN205861860U (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620772220.0U Active CN205861860U (en) | 2016-07-21 | 2016-07-21 | High voltage DC breaker subsidiary loop parameter of oscillation test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205861860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054069A (en) * | 2016-07-21 | 2016-10-26 | 国网山西省电力公司电力科学研究院 | High-voltage DC circuit breaker auxiliary circuit oscillation parameter testing device and testing method |
-
2016
- 2016-07-21 CN CN201620772220.0U patent/CN205861860U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106054069A (en) * | 2016-07-21 | 2016-10-26 | 国网山西省电力公司电力科学研究院 | High-voltage DC circuit breaker auxiliary circuit oscillation parameter testing device and testing method |
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| GR01 | Patent grant |