CN104535923A - Testing circuit and method for detecting breaking performance of DC circuit breaker - Google Patents
Testing circuit and method for detecting breaking performance of DC circuit breaker Download PDFInfo
- Publication number
- CN104535923A CN104535923A CN201410835862.6A CN201410835862A CN104535923A CN 104535923 A CN104535923 A CN 104535923A CN 201410835862 A CN201410835862 A CN 201410835862A CN 104535923 A CN104535923 A CN 104535923A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- circuit
- auxiliary switch
- high voltage
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a testing circuit and method for detecting the breaking performance of a DC circuit breaker. The testing circuit is used for effectively replacing a testing circuit which is built for achieving testing of the DC circuit breaker and is large in investment in an equivalent replacement mode. According to the testing circuit, the capacitance of a low-frequency oscillation circuit (or a high-frequency oscillation circuit) is output to the high-voltage end of the DC circuit breaker through a high-voltage ignition ball, an auxiliary switch AB1 and a reactor LS, a series branch circuit formed by an auxiliary switch AB2 and a current limiting reactor is connected with a DC circuit breaker branch circuit in parallel, and the DC circuit breaker branch circuit is a DC circuit breaker protection circuit which can prevent the situation that the DC circuit breaker is excessively burnt or damaged due to the fact that the current through the DC circuit breaker is not shut off. A lightning arrester and a sphere gap are protective devices and can prevent overvoltage from damaging testing equipment. A charging device CD1 is used for charging a capacitor bank CS, and a charging device CD2 is used for charging a capacitor C0. Moreover, through reasonable time sequence setting, a trigger device can act at schedule time to complete testing detection of the DC circuit breaker.
Description
[technical field]
The invention belongs to direct current transportation high voltage DC breaker experimental technique field, the test loop of particularly a kind of DC circuit breaker break performance detection and test method.
[background technology]
DC circuit breaker is one of visual plant of extra-high voltage direct-current transmission engineering current conversion station, its Main Function is the short trouble removing DC side appearance, namely, when straight-flow system breaks down, (in 5ms) cut-offs direct-current short circuit electric current with DC circuit breaker in the short period of time.In order to prove that DC circuit breaker has this ability, verify that it cut-offs the performance of direct-current short circuit electric current at laboratory test.
The test loop that DC circuit breaker break performance detects is analog DC isolating switch actual condition in straight-flow system, due to will high voltage be born after DC circuit breaker dropout current, the voltage of direct supply must meet the requirements of magnitude of voltage, current high voltage DC breaker is mainly based on active type, electric capacity in the subsidiary loop of i.e. DC circuit breaker needs to charge, therefore to build up such test loop, invest huge.
[summary of the invention]
The object of the present invention is to provide a kind of test loop for the detection of DC circuit breaker break performance and test method, this test loop adopts the mode substituted of equal value, is effectively replaced by and realizes the test loop that DC circuit breaker is tested and the investment of construction is huge.
To achieve these goals, the present invention adopts following technical scheme:
For the test loop that DC circuit breaker break performance detects, the hookup part comprising current source and be connected with current source; Current source comprises Capacitor banks C
s, high voltage reactor L1, the first high voltage ignition ball GP1 and the second high voltage ignition ball GP2; Hookup part comprises the first auxiliary switch AB1, the second auxiliary switch AB2 and current limiting reactor L
c; First high voltage ignition ball GP1 one end and Capacitor banks C
shigh-voltage output end is connected, and the other end is connected with first auxiliary switch AB1 one end; The first auxiliary switch AB1 other end is connected with high voltage reactor L1 one end; The high voltage reactor L1 other end is connected with DC circuit breaker SP high-pressure side, the low pressure end ground connection of DC circuit breaker SP; Second auxiliary switch AB2 one end and current limiting reactor L
cone end connects; The second auxiliary switch AB2 other end is connected with the first auxiliary switch AB1 other end, current limiting reactor L
cother end ground connection; DC circuit breaker SP two ends are parallel with subsidiary loop, and subsidiary loop comprises capacitor C0 and the reactor L0 of series connection mutually; Second high voltage ignition ball GP2 one end connects the high-pressure side of DC circuit breaker SP, and the other end connects the positive pole of capacitor C0, and the negative pole of capacitor C0 connects the low pressure end of DC circuit breaker SP by reactor L0.
The present invention further improves and is: also comprise protection ball BQ and lightning arrester P; Protection ball BQ one end is connected on Capacitor banks C by the first high voltage ignition ball GP1
snoble potential on, another termination Capacitor banks C of protection ball BQ
selectronegative potential; Lightning arrester P high-pressure side is connected with first auxiliary switch AB1 one end, another termination Capacitor banks C
selectronegative potential.
The present invention further improves and is: also comprise measuring system; Described measuring system comprises: the first magnetic potentiometer CT1, the second magnetic potentiometer CT2, the 3rd magnetic potentiometer CT3, the 4th magnetic potentiometer CT4, arc voltage measurement mechanism and RC divider; Arc voltage measurement mechanism is connected in parallel on DC circuit breaker SP two ends; RC divider high-pressure side is connected with DC circuit breaker SP high-pressure side, and the other end is connected to the ground; First magnetic potentiometer CT1 is enclosed within DC circuit breaker SP low pressure end and is connected on busbar with DC circuit breaker SP subsidiary loop low pressure end; Second magnetic potentiometer CT2 is enclosed within current limiting reactor L
cand between ground on busbar; 3rd magnetic potentiometer CT3 is enclosed within DC circuit breaker SP low pressure end and the busbar between DC circuit breaker SP subsidiary loop low pressure end junction and ground; 4th magnetic potentiometer CT4 is enclosed within DC circuit breaker SP low pressure end.
The present invention further improves and is: Capacitor banks C
slow-frequency oscillation loop or oscillation frequency loop is formed with high voltage reactor L1.
The present invention further improves and is: described test loop also comprises the first charging device CD1 for Capacitor banks CS charges, and is the second charging device CD2 that capacitor C0 charges.
For a test method for the test loop that DC circuit breaker break performance detects, comprise the following steps:
Before test, DC circuit breaker SP is in "on" position, and the first auxiliary switch AB1 is in "on" position, Capacitor banks CS and capacitor C0 charging complete;
In T0 moment first high voltage ignition ball GP1 action;
Disjunction is started at T1 moment DC circuit breaker SP;
In T2 moment second high voltage ignition ball GP2 action;
Close at T3 moment second auxiliary switch AB2;
Send out the first auxiliary switch AB1 sub-gate signal in the T4 moment, complete whole test.
The present invention further improves and is: T0 < T1 < T2 < T3 < T4.
The present invention further improves and is: T1 is greater than 1ms, is less than 3ms; T2 is 3ms; T3 is 4ms after DC circuit breaker SP disconnects; 5ms after T4 DC circuit breaker SP disconnects.
Relative to prior art, the present invention has following beneficial effect: the test method of DC circuit breaker, namely uses
The present invention proposes a kind of test loop for the detection of DC circuit breaker break performance and test method, this test loop comprises LC low-frequency oscillation loop or oscillation frequency loop, straightway testing is carried out to DC circuit breaker, the interactional ability on the same auxiliary road of electric arc of examination DC circuit breaker, the arc-rupturing capacity under higher di/dt and du/dt; After dropout current, the ability to bear of fracture recovery voltage, meet test required voltage, test loop equivalence is high.
Test loop of the present invention adopts the mode substituted of equal value, is effectively replaced by and realizes the test loop that DC circuit breaker is tested and the investment of construction is huge; This loop by the electric capacity of low-frequency oscillation loop (or high frequency oscillation circuit) through high voltage ignition ball, auxiliary switch AB1, reactor L
soutput to DC circuit breaker high-pressure side, auxiliary switch AB2 and current limiting reactor series arm and DC circuit breaker branch circuit parallel connection, this branch road is DC circuit breaker protective loop, prevents DC circuit breaker from opening continuous electric current, causes the excessive scaling loss of DC circuit breaker or damage.Lightning arrester and ball gap are proterctive equipment, prevent superpotential destructive test equipment.Charging device CD1 is Capacitor banks C
scharging, charging device CD2 is capacitor C
0charging.And adjusted by rational sequential, make flip flop equipment in stipulated time action to complete the testing inspection of DC circuit breaker.
[accompanying drawing explanation]
Fig. 1 is a kind of test loop schematic diagram detected for DC circuit breaker break performance of the present invention;
Fig. 2 is a kind of test loop action timing diagram detected for DC circuit breaker break performance of the present invention;
Wherein: C
s-current source Capacitor banks, L1-reactor, C
0-commutation circuit electric capacity, L
0-commutation circuit inductance, GP1-first high voltage ignition ball, GP2-second high voltage ignition ball; AB1-first auxiliary switch, AB2-second auxiliary switch; SP-DC circuit breaker; I1-current source current; I2-current limiting reactor electric current; I3-DC circuit breaker subsidiary loop electric current; I4-DC circuit breaker (sp) test current; P-lightning arrester; BQ-protects ball; L
c-current limiting reactor; U1-arc voltage measurement mechanism; U2-RC divider; CT1-first magnetic potentiometer, CT2-second magnetic potentiometer, CT3-the 3rd magnetic potentiometer, CT4-the 4th magnetic potentiometer, CD1-first charging device, CD2-second charging device.
[embodiment]
Refer to shown in Fig. 1, a kind of test loop detected for DC circuit breaker break performance of the present invention, the hookup part comprising current source and be connected with current source; Current source is by Capacitor banks C
s, high voltage reactor L1, the first high voltage ignition ball GP1, the second high voltage ignition ball GP2 and protection ball BQ composition; Hookup part comprises the first auxiliary switch AB1, the second auxiliary switch AB2, current limiting reactor L
c, lightning arrester P and measuring system.
Measuring system comprises: the first magnetic potentiometer CT1, the second magnetic potentiometer CT2, the 3rd magnetic potentiometer CT3, the 4th magnetic potentiometer CT4, arc voltage measurement mechanism and RC divider.
The Capacitor banks C in first high voltage ignition ball GP1 one end and low-frequency oscillation loop (or oscillation frequency loop)
shigh-voltage output end is connected, and the other end is connected with first auxiliary switch AB1 one end; The first auxiliary switch AB1 other end is connected with high voltage reactor L1 one end; The high voltage reactor L1 other end is connected with DC circuit breaker SP high-pressure side, the low pressure end ground connection of DC circuit breaker SP.Protection ball BQ one end is connected on the noble potential of low-frequency oscillation loop output by the first high voltage ignition ball GP1, the electronegative potential of another termination low-frequency oscillation loop output of protection ball BQ; Lightning arrester P high-pressure side is connected with first auxiliary switch AB1 one end, another termination tank capacitor group C
sthe electronegative potential of output terminal; Second auxiliary switch AB2 one end and current limiting reactor L
cone end connects; The second auxiliary switch AB2 other end is connected with the first auxiliary switch AB1 other end, current limiting reactor L
cother end ground connection.
Arc voltage measurement mechanism is connected in parallel on DC circuit breaker SP two ends; RC divider high-pressure side is connected with DC circuit breaker SP high-pressure side, and the other end is connected to the ground.DC circuit breaker SP two ends are parallel with subsidiary loop, and subsidiary loop comprises capacitor C0 and the reactor L0 of series connection mutually; Second high voltage ignition ball GP2 one end connects the high-pressure side of DC circuit breaker SP, and the other end connects the positive pole of capacitor C0, and the negative pole of capacitor C0 connects the low pressure end of DC circuit breaker SP by reactor L0.
First magnetic potentiometer CT1 is enclosed within DC circuit breaker SP low pressure end and is connected on busbar with DC circuit breaker SP subsidiary loop low pressure end; Second magnetic potentiometer CT2 is enclosed within current limiting reactor L
cand between ground on busbar; 3rd magnetic potentiometer CT3 is enclosed within DC circuit breaker SP low pressure end and the busbar between DC circuit breaker SP subsidiary loop low pressure end junction and ground; 4th magnetic potentiometer CT4 is enclosed within DC circuit breaker SP low pressure end.
A kind of test loop detected for DC circuit breaker break performance of the present invention, the Capacitor banks CS in low-frequency oscillation loop (or high frequency oscillation circuit) outputs to DC circuit breaker SP high-pressure side through the first high voltage ignition ball GP1, the first auxiliary switch AB1, high voltage reactor L1, the second auxiliary switch AB2 and current limiting reactor L
cseries arm and DC circuit breaker branch circuit parallel connection, this branch road is DC circuit breaker protective loop, prevents DC circuit breaker from opening continuous electric current, causes the excessive scaling loss of DC circuit breaker or damage.Lightning arrester P and ball gap are proterctive equipment, prevent superpotential destructive test equipment.First charging device CD1 is that Capacitor banks CS charges, and the second charging device CD2 is that capacitor C0 charges.
Refer to shown in Fig. 2, the test method of a kind of test loop for the detection of DC circuit breaker break performance of the present invention, comprises the following steps:
Before test, DC circuit breaker SP is in "on" position, and the first auxiliary switch AB1 is in "on" position, Capacitor banks CS and capacitor C0 charging complete;
In T0 moment first high voltage ignition ball GP1 action;
Disjunction is started at T1 moment DC circuit breaker SP; T1 is greater than 1ms, is less than 3ms
In T2 moment second high voltage ignition ball GP2 action; T2 is 3ms;
Close at T3 moment second auxiliary switch AB2; T3 is 4ms after DC circuit breaker SP disconnects;
The first auxiliary switch AB1 sub-gate signal is sent out in the T4 moment; 5ms after T4 DC circuit breaker SP disconnects.
The present invention is adjusted by rational sequential, makes flip flop equipment and respective switch in stipulated time action to complete the testing inspection of DC circuit breaker.
Claims (8)
1., for the test loop that DC circuit breaker break performance detects, it is characterized in that, the hookup part comprising current source and be connected with current source;
Current source comprises Capacitor banks C
s, high voltage reactor L1, the first high voltage ignition ball GP1 and the second high voltage ignition ball GP2; Hookup part comprises the first auxiliary switch AB1, the second auxiliary switch AB2 and current limiting reactor L
c;
First high voltage ignition ball GP1 one end and Capacitor banks C
shigh-voltage output end is connected, and the other end is connected with first auxiliary switch AB1 one end; The first auxiliary switch AB1 other end is connected with high voltage reactor L1 one end; The high voltage reactor L1 other end is connected with DC circuit breaker SP high-pressure side, the low pressure end ground connection of DC circuit breaker SP; Second auxiliary switch AB2 one end and current limiting reactor L
cone end connects; The second auxiliary switch AB2 other end is connected with the first auxiliary switch AB1 other end, current limiting reactor L
cother end ground connection;
DC circuit breaker SP two ends are parallel with subsidiary loop, and subsidiary loop comprises capacitor C0 and the reactor L0 of series connection mutually; Second high voltage ignition ball GP2 one end connects the high-pressure side of DC circuit breaker SP, and the other end connects the positive pole of capacitor C0, and the negative pole of capacitor C0 connects the low pressure end of DC circuit breaker SP by reactor L0.
2. a kind of test loop detected for DC circuit breaker break performance according to claim 1, is characterized in that, also comprises protection ball BQ and lightning arrester P; Protection ball BQ one end is connected on Capacitor banks C by the first high voltage ignition ball GP1
snoble potential on, another termination Capacitor banks C of protection ball BQ
selectronegative potential; Lightning arrester P high-pressure side is connected with first auxiliary switch AB1 one end, another termination Capacitor banks C
selectronegative potential.
3. a kind of test loop detected for DC circuit breaker break performance according to claim 1, is characterized in that, also comprise measuring system; Described measuring system comprises: the first magnetic potentiometer CT1, the second magnetic potentiometer CT2, the 3rd magnetic potentiometer CT3, the 4th magnetic potentiometer CT4, arc voltage measurement mechanism and RC divider; Arc voltage measurement mechanism is connected in parallel on DC circuit breaker SP two ends; RC divider high-pressure side is connected with DC circuit breaker SP high-pressure side, and the other end is connected to the ground; First magnetic potentiometer CT1 is enclosed within DC circuit breaker SP low pressure end and is connected on busbar with DC circuit breaker SP subsidiary loop low pressure end; Second magnetic potentiometer CT2 is enclosed within current limiting reactor L
cand between ground on busbar; 3rd magnetic potentiometer CT3 is enclosed within DC circuit breaker SP low pressure end and the busbar between DC circuit breaker SP subsidiary loop low pressure end junction and ground; 4th magnetic potentiometer CT4 is enclosed within DC circuit breaker SP low pressure end.
4. a kind of test loop detected for DC circuit breaker break performance according to claim 1, is characterized in that, Capacitor banks C
slow-frequency oscillation loop or oscillation frequency loop is formed with high voltage reactor L1.
5. a kind of test loop detected for DC circuit breaker break performance according to claim 1, is characterized in that, described test loop also comprises the first charging device CD1 for Capacitor banks CS charges, and is the second charging device CD2 that capacitor C0 charges.
6. the test method of a kind of test loop for the detection of DC circuit breaker break performance according to any one of claim 1 to 5, is characterized in that, comprise the following steps:
Before test, DC circuit breaker SP is in "on" position, and the first auxiliary switch AB1 is in "on" position, Capacitor banks CS and capacitor C0 charging complete;
In T0 moment first high voltage ignition ball GP1 action;
Disjunction is started at T1 moment DC circuit breaker SP;
In T2 moment second high voltage ignition ball GP2 action;
Close at T3 moment second auxiliary switch AB2;
Send out the first auxiliary switch AB1 sub-gate signal in the T4 moment, complete whole test.
7. test method according to claim 6, is characterized in that, T0 < T1 < T2 < T3 < T4.
8. test method according to claim 6, is characterized in that, T1 is greater than 1ms, is less than 3ms; T2 is 3ms; T3 is 4ms after DC circuit breaker SP disconnects; 5ms after T4 DC circuit breaker SP disconnects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835862.6A CN104535923B (en) | 2014-12-27 | 2014-12-27 | A kind of test loop detected for dc circuit breaker break performance and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410835862.6A CN104535923B (en) | 2014-12-27 | 2014-12-27 | A kind of test loop detected for dc circuit breaker break performance and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104535923A true CN104535923A (en) | 2015-04-22 |
| CN104535923B CN104535923B (en) | 2017-10-31 |
Family
ID=52851485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410835862.6A Active CN104535923B (en) | 2014-12-27 | 2014-12-27 | A kind of test loop detected for dc circuit breaker break performance and test method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104535923B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116322A (en) * | 2015-09-11 | 2015-12-02 | 国家电网公司 | System and method for testing circuit breaker auxiliary switch |
| CN105467314A (en) * | 2016-01-26 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | High voltage DC isolation switch performance detection device |
| CN106526473A (en) * | 2016-11-24 | 2017-03-22 | 华中科技大学 | Mechanical type high-voltage DC breaker on-off equivalent test loop and method |
| WO2017071413A1 (en) * | 2015-10-29 | 2017-05-04 | 全球能源互联网研究院 | Synthesis circuit and method for testing direct current circuit breaker by means of composite injection of high voltage and large current |
| CN107091960A (en) * | 2017-06-21 | 2017-08-25 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of extra-high voltage π type DC filters are taken out stitches and preventive trial method |
| CN107110912A (en) * | 2015-06-26 | 2017-08-29 | 株式会社东芝 | The test method of dc circuit breaker |
| CN107942241A (en) * | 2017-10-20 | 2018-04-20 | 许继电气股份有限公司 | A kind of hookup for high voltage DC breaker submodule |
| CN112067986A (en) * | 2020-09-14 | 2020-12-11 | 全球能源互联网研究院有限公司 | Device for checking high and low frequency oscillation interference resistance of direct current breaker |
| WO2021003775A1 (en) * | 2019-07-10 | 2021-01-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for testing internal-arcing-resistance capability of direct-current high-speed switch |
| CN112824917A (en) * | 2019-11-20 | 2021-05-21 | 西安高压电器研究院有限责任公司 | Performance detection system of high-voltage direct-current circuit breaker |
| CN112824918A (en) * | 2019-11-20 | 2021-05-21 | 西安高压电器研究院有限责任公司 | Device and method for detecting reclosing performance of direct-current circuit breaker |
| CN113567850A (en) * | 2021-07-27 | 2021-10-29 | 西安交通大学 | System and method for verifying on-off performance of medium-low voltage direct current distribution switchgear |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804087U (en) * | 2010-08-20 | 2011-04-20 | 中国西电电气股份有限公司 | Synthetic test loop for bypass switch |
| CN201804084U (en) * | 2010-08-20 | 2011-04-20 | 中国西电电气股份有限公司 | Synthetic test loop for input current test of bypass switch |
| CN201819973U (en) * | 2010-10-29 | 2011-05-04 | 中国西电电气股份有限公司 | Device for making test of high-voltage circuit breaker |
| CN201935987U (en) * | 2010-12-23 | 2011-08-17 | 中国西电电气股份有限公司 | Synthetic test loop for direct current (DC) switch test |
| CN202033455U (en) * | 2010-12-23 | 2011-11-09 | 中国西电电气股份有限公司 | Direct testing loop used for direct current switch test |
| CN102288905A (en) * | 2011-06-27 | 2011-12-21 | 中国西电电气股份有限公司 | Synthetic closing and opening test circuit used for high-voltage AC (alternating current) circuit breaker |
-
2014
- 2014-12-27 CN CN201410835862.6A patent/CN104535923B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201804087U (en) * | 2010-08-20 | 2011-04-20 | 中国西电电气股份有限公司 | Synthetic test loop for bypass switch |
| CN201804084U (en) * | 2010-08-20 | 2011-04-20 | 中国西电电气股份有限公司 | Synthetic test loop for input current test of bypass switch |
| CN201819973U (en) * | 2010-10-29 | 2011-05-04 | 中国西电电气股份有限公司 | Device for making test of high-voltage circuit breaker |
| CN201935987U (en) * | 2010-12-23 | 2011-08-17 | 中国西电电气股份有限公司 | Synthetic test loop for direct current (DC) switch test |
| CN202033455U (en) * | 2010-12-23 | 2011-11-09 | 中国西电电气股份有限公司 | Direct testing loop used for direct current switch test |
| CN102288905A (en) * | 2011-06-27 | 2011-12-21 | 中国西电电气股份有限公司 | Synthetic closing and opening test circuit used for high-voltage AC (alternating current) circuit breaker |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107110912B (en) * | 2015-06-26 | 2019-08-27 | 株式会社东芝 | The test method of dc circuit breaker |
| CN107110912A (en) * | 2015-06-26 | 2017-08-29 | 株式会社东芝 | The test method of dc circuit breaker |
| CN105116322A (en) * | 2015-09-11 | 2015-12-02 | 国家电网公司 | System and method for testing circuit breaker auxiliary switch |
| CN105116322B (en) * | 2015-09-11 | 2018-01-09 | 国家电网公司 | The test system and method for a kind of auxiliary switch for circuit breaker |
| WO2017071413A1 (en) * | 2015-10-29 | 2017-05-04 | 全球能源互联网研究院 | Synthesis circuit and method for testing direct current circuit breaker by means of composite injection of high voltage and large current |
| CN105467314A (en) * | 2016-01-26 | 2016-04-06 | 云南电网有限责任公司电力科学研究院 | High voltage DC isolation switch performance detection device |
| CN106526473A (en) * | 2016-11-24 | 2017-03-22 | 华中科技大学 | Mechanical type high-voltage DC breaker on-off equivalent test loop and method |
| CN106526473B (en) * | 2016-11-24 | 2023-08-25 | 华中科技大学 | Mechanical high-voltage direct-current breaker breaking equivalent test loop and method |
| CN107091960A (en) * | 2017-06-21 | 2017-08-25 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of extra-high voltage π type DC filters are taken out stitches and preventive trial method |
| CN107091960B (en) * | 2017-06-21 | 2019-09-17 | 中国南方电网有限责任公司超高压输电公司广州局 | A kind of extra-high voltage π type DC filter is taken out stitches and preventive trial method |
| CN107942241A (en) * | 2017-10-20 | 2018-04-20 | 许继电气股份有限公司 | A kind of hookup for high voltage DC breaker submodule |
| WO2021003775A1 (en) * | 2019-07-10 | 2021-01-14 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for testing internal-arcing-resistance capability of direct-current high-speed switch |
| CN112824917A (en) * | 2019-11-20 | 2021-05-21 | 西安高压电器研究院有限责任公司 | Performance detection system of high-voltage direct-current circuit breaker |
| CN112824918A (en) * | 2019-11-20 | 2021-05-21 | 西安高压电器研究院有限责任公司 | Device and method for detecting reclosing performance of direct-current circuit breaker |
| CN112067986A (en) * | 2020-09-14 | 2020-12-11 | 全球能源互联网研究院有限公司 | Device for checking high and low frequency oscillation interference resistance of direct current breaker |
| CN113567850A (en) * | 2021-07-27 | 2021-10-29 | 西安交通大学 | System and method for verifying on-off performance of medium-low voltage direct current distribution switchgear |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104535923B (en) | 2017-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104535923A (en) | Testing circuit and method for detecting breaking performance of DC circuit breaker | |
| CN102129033B (en) | Test loop used for direct-current switch test | |
| CN103779828A (en) | Two-way direct-current on-off circuit based on artificial zero crossing and on-off method thereof | |
| CN105098744A (en) | Bus residual voltage maintenance device | |
| CN104113002A (en) | High-voltage cable cross interconnection grounding system transfer device | |
| CN201478821U (en) | Overvoltage protector for indirect neutral point-grounding power system in three-phase power grid | |
| CN203180508U (en) | System overvoltage inhibition apparatus | |
| CN104795827A (en) | Switching circuit of energy-storing inverter and grid-connection/off-grid switching method and device thereof | |
| CN203251091U (en) | Ground comprehensive protecting device for electricity utilization | |
| CN105304244A (en) | Arrester special for power equipment | |
| CN204884829U (en) | Transformer core multiple spot earth fault discharge impact ware | |
| CN201388042Y (en) | Central high-voltage switch equal-height cabinet | |
| CN201892732U (en) | Aperiodic triggering test device of direct-current converting valve | |
| CN204330922U (en) | Lightning arrester on-line checkingi safety feature | |
| CN203312787U (en) | Overvoltage protection device with circuit detection device | |
| CN105510731A (en) | Parallel resonance detection alarming method and system for medium-voltage side power grid of power transformer | |
| CN204462285U (en) | A kind of surge voltage generation test unit | |
| CN103311881A (en) | Over-current protection device and method | |
| CN104242136B (en) | A kind of complete power distribution equipment with surge suppression function and control method thereof | |
| CN104158163A (en) | VFTO protection device and method for transformer in GIS substation | |
| CN203377519U (en) | Lightning arrester handcart with function of online monitoring | |
| CN203798982U (en) | Switch electric life test loop for extra-high voltage substation reactive compensation | |
| CN209046243U (en) | A kind of voltage transformer protection device of technological service | |
| CN103280794A (en) | Surging resistant and reverse-connection resistant port | |
| CN203135432U (en) | Arc-resonance extinction route-selecting over-voltage protection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210812 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: CHINA XD ELECTRIC Co.,Ltd. Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |