CN114325377A - System and method for diagnosing and predicting fault of vacuum main circuit breaker and locomotive - Google Patents
System and method for diagnosing and predicting fault of vacuum main circuit breaker and locomotive Download PDFInfo
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- CN114325377A CN114325377A CN202210002967.8A CN202210002967A CN114325377A CN 114325377 A CN114325377 A CN 114325377A CN 202210002967 A CN202210002967 A CN 202210002967A CN 114325377 A CN114325377 A CN 114325377A
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Abstract
The invention discloses a system and a method for diagnosing and predicting a fault of a vacuum main circuit breaker and a locomotive, and relates to the technical field of high-voltage electricity of rail transit vehicles. The device comprises a CCU, a signal acquisition module, a main transformer, a secondary side circuit, a TCU, a TSN, a vacuum main circuit breaker and a main contact and an auxiliary contact of the vacuum main circuit breaker. The main contact is electrically connected and linked with the auxiliary contact; the input end of the main contact is connected with high-voltage electricity, and the output end of the main contact is connected with a main transformer; the signal acquisition module is electrically connected with the auxiliary contact. The input end of the secondary side circuit is electrically connected with the main transformer, and the output end of the secondary side circuit is electrically connected with the TCU. The secondary side voltage and the auxiliary contact can be redundant mutually, and can also be used in combination to judge the state of the main contact of the vacuum main circuit breaker in the same work mode so as to obtain the actual state of the vacuum main circuit breaker, and the stability of the fault diagnosis and prediction system of the vacuum main circuit breaker is improved.
Description
Technical Field
The invention relates to the technical field of high-voltage electricity on rail transit vehicles, in particular to a system and a method for diagnosing and predicting a fault of a vacuum main circuit breaker and a locomotive.
Background
The vacuum main circuit breaker is a main switch for switching on and off a high-voltage main circuit of the electric locomotive and is used for overload, short circuit and ground protection of the electric locomotive, so the vacuum main circuit breaker is also an important part for ensuring the safe operation of the electric locomotive.
The vacuum main breaker is a high voltage electrical appliance that operates with compressed air and arc extinguishing with vacuum. Along with the ageing of vacuum main circuit breaker, the vacuum degree of its vacuum switch pipe also can descend, leads to the breaking capacity decline of vacuum main circuit breaker, can't in time break the main circuit fast, when taking place protection such as overload, short circuit or ground connection, easily leads to high-voltage apparatus to burn out.
For the fault diagnosis of the vacuum main circuit breaker, at present, whether the vacuum main circuit breaker has a fault is judged only by acquiring an auxiliary contact of the vacuum main circuit breaker through a train Central Control Unit (CCU for short) to judge whether the opening/closing state of the vacuum main circuit breaker is consistent with the opening/closing instruction of the vacuum main circuit breaker, at present, the train Control and state acquisition based on an MVB network is large in acquisition period, the recorded opening/closing time of the vacuum main circuit breaker is generally more than 500ms and is far longer than the opening/closing performance time of the vacuum main circuit breaker, and the fault cannot be diagnosed quickly and accurately. Meanwhile, at present, no accurate control method is available for the fault prediction of the vacuum main circuit breaker.
Disclosure of Invention
The invention aims to solve the technical problem that the fault of the main vacuum circuit breaker can be accurately and timely predicted by providing a system and a method for diagnosing and predicting the fault of the main vacuum circuit breaker and a locomotive.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides a main circuit breaker failure diagnosis in vacuum and prediction system, includes CCU, signal acquisition module, main transformer, main circuit breaker in vacuum and main contact and auxiliary contact, main contact with the auxiliary contact electricity is connected and is linked. The input end of the main contact is connected with high-voltage electricity, and the output end of the main contact is connected with a main transformer; the signal acquisition module is electrically connected with the auxiliary contact.
The system also comprises a secondary side circuit, a TCU and a TSN. The input end of the secondary side circuit is electrically connected with the main transformer, and the output end of the secondary side circuit is electrically connected with the TCU. The signal acquisition module is used for acquiring the state of the auxiliary contact and sending the state to the CCU through the TSN. The TCU is used for acquiring secondary side voltage and sending the secondary side voltage to the CCU through the TSN. And the vacuum main circuit breaker is used for responding to a control instruction of the CCU for outputting the closing or opening of the vacuum main circuit breaker. The CCU is used for outputting a control instruction of closing or opening the vacuum main breaker, accumulating the total times of the opening/closing instructions of the vacuum main breaker output by the CCU, acquiring the total opening/closing time of the vacuum main breaker, calculating the average opening/closing time of the vacuum main breaker, and comparing the average opening/closing time with a limit value.
Particularly, the vacuum main circuit breaker further comprises display equipment used for displaying early warning information of the vacuum main circuit breaker.
In particular, the CCU is also used to know whether the vacuum main breaker is successfully closed or opened: when the secondary side voltage is within a normal range of the network voltage of the contact network or/and the auxiliary contact is in a closed state, the vacuum main breaker is successfully closed; when the voltage of the secondary side is lower than the normal range of the network voltage of the contact network, or/and the state of the auxiliary contact is in a disconnection state, the vacuum main breaker is successfully disconnected.
Specifically, the CCU is further configured to: after the CCU sends out a closing instruction, within a first diagnosis time t1, the voltage of the secondary side is lower than the normal range of the contact network voltage, or the auxiliary contact is disconnected; or after the CCU sends out a disconnection instruction, within a second diagnosis time t2, the voltage of the secondary side is within a normal range of the voltage of the contact network, or the auxiliary contact is closed; the CCU determines that the vacuum main breaker is faulty and sends an alarm message.
Specifically, the CCU is further configured to: when the CCU knows that the state of the auxiliary contact is closed, the CCU judges whether the secondary side voltage is lower than the normal range of the contact network voltage within a third diagnosis time t 3; or when the CCU knows that the auxiliary contact is disconnected, the CCU judges whether the secondary side voltage is in the normal range of the contact network voltage within the fourth diagnosis time t 4; if yes, the CCU judges the vacuum main breaker to have a fault and sends alarm information.
Based on the same technical concept, the invention also provides a method for predicting the fault of the vacuum main circuit breaker, which comprises the following steps: the CCU accumulates the total times of the output opening/closing instructions of the vacuum main circuit breaker, acquires the total opening/closing time of the vacuum main circuit breaker, and divides the total time by the total times to obtain the average opening/closing time of the vacuum main circuit breaker. And when the average time exceeds a limit value, sending out early warning information for predicting the fault of the vacuum main circuit breaker.
The method for acquiring the total opening/closing time of the vacuum main breaker by the CCU comprises the following steps of recording and accumulating the opening/closing time of the vacuum main breaker acquired each time,
the CCU outputs a control instruction for closing or opening the vacuum main breaker and starts timing;
II, the signal acquisition module acquires the state of the auxiliary contact and sends the state to the CCU through the TSN;
or/and the TCU acquires the secondary side voltage and sends the secondary side voltage to the CCU through the TSN;
and III, the CCU acquires that the vacuum main breaker is successfully closed or opened, and the timing is finished.
The state judgment of the main contact of the vacuum main breaker can be carried out based on the secondary side voltage collected by a Traction Converter Unit (TCU) or the state of the auxiliary contact, so as to obtain the actual state of the vacuum main breaker, and the secondary side voltage and the auxiliary contact can be redundant with each other and can also be combined for simultaneous judgment. The Time Sensitive Network (TSN) is adopted for signal transmission, high real-Time performance of 10us level can be achieved, and sampling and data transmission efficiency of the CCU is improved. The method comprises the steps of recording the opening/closing time of the main vacuum circuit breaker every time, setting a time limit value of the opening/closing of the main vacuum circuit breaker according to the record, and if the opening/closing time of the main vacuum circuit breaker at a certain time exceeds the limit value, considering that the main vacuum circuit breaker is about to break down, and sending early warning information to a worker to remind the worker to check whether the main vacuum circuit breaker is aged or not, so that the fault prediction of the main vacuum circuit breaker is realized, and the accident can be avoided.
Specifically, in the step III, if the secondary side voltage is within the normal range of the network voltage of the overhead line system, or/and the auxiliary contact is in a closed state, the main vacuum circuit breaker is successfully closed; when the voltage of the secondary side is lower than the normal range of the network voltage of the contact network, or/and the state of the auxiliary contact is in a disconnection state, the vacuum main breaker is successfully disconnected.
Based on the same technical concept, the invention also provides a method for diagnosing the fault of the vacuum main circuit breaker, which comprises the following steps: after the CCU sends out a closing instruction, within a first diagnosis time t1, the voltage of the secondary side is lower than the normal range of the contact network voltage, or the auxiliary contact is still disconnected; or after the CCU sends out a disconnection instruction, within a second diagnosis time t2, the voltage of the secondary side is within a normal range of the voltage of the contact network, or the auxiliary contact is still closed; the CCU determines that the vacuum main breaker is faulty and sends an alarm message.
Specifically, the method further comprises the following steps: when the CCU knows that the state of the auxiliary contact is closed, the CCU judges whether the secondary side voltage is lower than the normal range of the contact network voltage within a third diagnosis time t 3; or when the CCU knows that the auxiliary contact is disconnected, the CCU judges whether the secondary side voltage is in the normal range of the contact network voltage within the fourth diagnosis time t 4; if so, the vacuum main breaker breaks down and sends alarm information.
Compared with the prior art, the invention has the beneficial effects that: 1) the method introduces the secondary side voltage acquired by the TCU to judge the fault of the main contact of the vacuum main circuit breaker, and fills the blank of judging and predicting the fault of the main contact of the current main circuit breaker. 2) The invention is more comprehensive by diagnosing and predicting the faults of the main contact and the auxiliary contact of the vacuum main circuit breaker and comparing the states of the main contact and the auxiliary contact. 3) The invention adopts TSN, and utilizes the characteristic of high real-time data transmission to greatly improve the efficiency and accuracy of main break fault and prediction, can avoid accidents, and has important significance for guiding vehicle maintenance and safe and stable operation of vehicles. In addition, the secondary side voltage and the auxiliary contact can be redundant mutually, and can also be used in combination to judge the state of the main contact of the vacuum main circuit breaker in the same work mode so as to obtain the actual state of the vacuum main circuit breaker, and the stability of the fault diagnosis and prediction system of the vacuum main circuit breaker is improved.
Drawings
Fig. 1 is a schematic structural diagram of a fault diagnosis and prediction system of a vacuum main circuit breaker according to a first embodiment and a second embodiment of the present invention.
Wherein, 1 is the main circuit breaker in vacuum, 2 is the contact net, 3 is the pantograph, 4 are main transformer, 5 are the secondary circuit, and K0 is the main contact, and K1 is the auxiliary contact.
Detailed Description
Example one
As shown in fig. 1, a locomotive according to an embodiment of the present invention includes a vacuum main circuit breaker fault diagnosis and prediction system, which includes a CCU, a signal acquisition module, a main transformer, a vacuum main circuit breaker 1, a main contact K0 and an auxiliary contact K1 thereof, a secondary circuit, a TCU, a TSN, and a display screen located in a cab. The vacuum main breaker 1 further comprises. The input end of the main contact K0 is connected with the overhead contact system 2 through the pantograph 3, the output end of the main contact K0 is connected with the main transformer 4, the main transformer 4 is connected with the secondary side circuit 5, the input end of the secondary side circuit is electrically connected with the main transformer, and the output end of the secondary side circuit is electrically connected with the TCU. The auxiliary contact K1 is electrically connected with the main contact K0 and is linked with the main contact K0, and the signal acquisition module is electrically connected with the auxiliary contact K1.
The CCU is used for outputting a control instruction of closing or opening the vacuum main breaker, accumulating the total times of the opening/closing instructions of the vacuum main breaker output by the CCU, acquiring the total opening/closing time of the vacuum main breaker, knowing whether the vacuum main breaker is successfully closed or opened, judging whether the vacuum main breaker breaks down, calculating the average opening/closing time of the vacuum main breaker, and comparing the average opening/closing time with a limit value.
The signal acquisition module is used for acquiring the state of the auxiliary contact and sending the state to the CCU through the TSN. And the vacuum main circuit breaker is used for responding to a control instruction of the CCU for outputting the closing or opening of the vacuum main circuit breaker. The auxiliary contact is used for feeding back the state of the vacuum main breaker. The TCU is used for collecting secondary side voltage. The TSN is used for transmitting the state of the auxiliary contact and the secondary side voltage.
The method for diagnosing and predicting the fault of the vacuum main circuit breaker through the secondary side voltage based on the fault diagnosing and predicting system of the vacuum main circuit breaker comprises the following steps: the CCU accumulates the total times of the switch-on/switch-off instructions of the vacuum main circuit breaker output by the CCU, acquires the total switch-on/switch-off time of the vacuum main circuit breaker, divides the total time by the total times to obtain the average switch-on/switch-off time of the vacuum main circuit breaker, when the average time exceeds a limit value, the CCU sends out early warning information for predicting the main contact fault of the vacuum main circuit breaker to a display screen of a cab, and a worker can overhaul and check the main contact of the vacuum main circuit breaker.
The method for acquiring the total opening/closing time of the vacuum main breaker by the CCU comprises the following steps of recording and accumulating the opening/closing time of the vacuum main breaker acquired each time,
the CCU outputs a control instruction for closing or opening the vacuum main breaker and starts timing;
the TCU collects secondary side voltage and sends the secondary side voltage to the CCU through the TSN;
judging whether the secondary side voltage is in a normal range in the network voltage of the contact network under a closing instruction, if so, successfully closing the vacuum main breaker; under a disconnection instruction, judging that the voltage of the secondary side is lower than the normal range of the network voltage of the contact network, if so, successfully disconnecting the vacuum main edge breaker; and when the CCU knows that the vacuum main breaker is successfully closed or opened, ending the timing.
When any one of the following conditions occurs, the CCU judges the fault of the vacuum main breaker:
after the CCU sends out a closing instruction, within a first diagnosis time t1, the secondary side voltage fed back by the TCU is lower than the normal range of the contact network voltage;
after the CCU sends out a disconnection instruction, within a second diagnosis time t2, the voltage of the secondary side fed back by the TCU is within a normal range in the voltage of the overhead line system;
the CCU knows that the state of the auxiliary contact is closed, and in a third diagnosis time t3, the secondary side voltage fed back by the TCU is lower than the normal range of the voltage of the contact network;
the ccu knows that the auxiliary contact is open, and during the fourth diagnostic time t4, the secondary voltage fed back by the TCU is within the normal range at the grid voltage of the catenary.
The first diagnosis time t1, the second diagnosis time t2, the third diagnosis time t3 and the fourth diagnosis time t4 can be set according to actual conditions.
Example two
As shown in fig. 1, the locomotive according to the second embodiment of the present invention includes a vacuum main circuit breaker fault diagnosis and prediction system, which includes a CCU, a signal acquisition module, a main transformer, a vacuum main circuit breaker 1, a main contact K0 and an auxiliary contact K1 thereof, a secondary side circuit, a TCU, a TSN, and a display screen located in a cab. The vacuum main breaker 1 further comprises. The input end of the main contact K0 is connected with the overhead contact system 2 through the pantograph 3, the output end of the main contact K0 is connected with the main transformer 4, the main transformer 4 is connected with the secondary side circuit 5, the input end of the secondary side circuit is electrically connected with the main transformer, and the output end of the secondary side circuit is electrically connected with the TCU. The auxiliary contact K1 is electrically connected with the main contact K0 and is linked with the main contact K0, and the signal acquisition module is electrically connected with the auxiliary contact K1.
The CCU is used for outputting a control instruction of closing or opening the vacuum main breaker, accumulating the total times of the opening/closing instructions of the vacuum main breaker output by the CCU, acquiring the total opening/closing time of the vacuum main breaker, knowing whether the vacuum main breaker is successfully closed or opened, judging whether the vacuum main breaker breaks down, calculating the average opening/closing time of the vacuum main breaker, and comparing the average opening/closing time with a limit value.
The signal acquisition module is used for acquiring the state of the auxiliary contact and sending the state to the CCU through the TSN. And the vacuum main circuit breaker is used for responding to a control instruction of the CCU for outputting the closing or opening of the vacuum main circuit breaker. The auxiliary contact is used for feeding back the state of the vacuum main breaker. The TCU is used for collecting secondary side voltage. The TSN is used for transmitting the state of the auxiliary contact and the secondary side voltage.
Based on the vacuum main circuit breaker fault diagnosis and prediction system, the method for diagnosing and predicting the vacuum main circuit breaker fault through the auxiliary contact point comprises the following steps: the CCU accumulates the total times of the output opening/closing instructions of the vacuum main circuit breaker, acquires the total opening/closing time of the vacuum main circuit breaker, and divides the total time by the total times to obtain the average opening/closing time of the vacuum main circuit breaker. When the average time exceeds a limit value, the CCU sends out early warning information for predicting the faults of the auxiliary contacts of the main vacuum circuit breaker to a display screen of the cab, and workers can overhaul and check the auxiliary contacts of the main vacuum circuit breaker.
The method for acquiring the total opening/closing time of the vacuum main breaker by the CCU comprises the following steps of recording and accumulating the opening/closing time of the vacuum main breaker acquired each time,
the CCU outputs a control instruction for closing or opening the vacuum main breaker and starts timing;
II, the signal acquisition module acquires the state of the auxiliary contact and sends the state to the CCU through the TSN;
IV, judging whether the auxiliary contact is in a closed state or not under a closing instruction, and if so, successfully closing the vacuum main breaker;
under a disconnection instruction, judging whether the state of the auxiliary contact is a disconnection state, if so, successfully disconnecting the vacuum main breaking tool;
and when the CCU knows that the vacuum main breaker is successfully closed or opened, ending the timing.
When any one of the following conditions occurs, the CCU judges the fault of the vacuum main breaker and sends alarm information:
after the ccu issues a close command, the auxiliary contacts are still open for a first diagnostic time t 1;
after the CCU sends an opening command, the auxiliary contact is still closed within a second diagnosis time t 2;
the CCU knows that the state of the auxiliary contact is closed, and in a third diagnosis time t3, the secondary side voltage fed back by the TCU is lower than the normal range of the voltage of the contact network;
the ccu knows that the auxiliary contact is open, and during the fourth diagnostic time t4, the secondary voltage fed back by the TCU is within the normal range at the grid voltage of the catenary.
The first diagnosis time t1, the second diagnosis time t2, the third diagnosis time t3 and the fourth diagnosis time t4 can be set according to actual conditions.
Claims (10)
1. A vacuum main circuit breaker fault diagnosis and prediction system comprises a CCU, a signal acquisition module, a main transformer, a vacuum main circuit breaker and a main contact and an auxiliary contact of the vacuum main circuit breaker, wherein the main contact is electrically connected and linked with the auxiliary contact; the input end of the main contact is connected with high-voltage electricity, and the output end of the main contact is connected with a main transformer; the signal acquisition module is electrically connected with the auxiliary contact; it is characterized in that the preparation method is characterized in that,
the circuit also comprises a secondary side circuit, a TCU and a TSN; the input end of the secondary side circuit is electrically connected with the main transformer, and the output end of the secondary side circuit is electrically connected with the TCU;
the signal acquisition module is used for acquiring the state of the auxiliary contact and sending the state to the CCU through the TSN;
the TCU is used for acquiring secondary side voltage and sending the secondary side voltage to the CCU through the TSN;
the vacuum main circuit breaker is used for responding to a control instruction of the CCU for outputting the closing or opening of the vacuum main circuit breaker;
the CCU is used for outputting a control instruction of closing or opening the vacuum main breaker, accumulating the total times of the opening/closing instructions of the vacuum main breaker output by the CCU, acquiring the total opening/closing time of the vacuum main breaker, calculating the average opening/closing time of the vacuum main breaker, and comparing the average opening/closing time with a limit value.
2. The vacuum main breaker fault diagnosis and prognosis system as claimed in claim 1, further comprising a display device for displaying early warning information of the vacuum main breaker fault.
3. The vacuum main breaker fault diagnosis and prognosis system of claim 1, wherein said CCU is further configured to learn whether the vacuum main breaker is successfully closed or opened: when the secondary side voltage is within a normal range of the network voltage of the contact network or/and the auxiliary contact is in a closed state, the vacuum main breaker is successfully closed; when the voltage of the secondary side is lower than the normal range of the network voltage of the contact network, or/and the state of the auxiliary contact is in a disconnection state, the vacuum main breaker is successfully disconnected.
4. The vacuum main breaker fault diagnosis and prognosis system of claim 3 wherein the CCU is further configured to: after the CCU sends out a closing instruction, within a first diagnosis time t1, the voltage of the secondary side is lower than the normal range of the contact network voltage, or the auxiliary contact is disconnected;
or after the CCU sends out a disconnection instruction, within a second diagnosis time t2, the voltage of the secondary side is within a normal range of the voltage of the contact network, or the auxiliary contact is closed;
the CCU determines that the vacuum main breaker is faulty and sends an alarm message.
5. The vacuum main breaker fault diagnosis and prognosis system of claim 4 wherein the CCU is further configured to: when the CCU knows that the state of the auxiliary contact is closed, the CCU judges whether the secondary side voltage is lower than the normal range of the contact network voltage within a third diagnosis time t 3;
or when the CCU knows that the auxiliary contact is disconnected, the CCU judges whether the secondary side voltage is in the normal range of the contact network voltage within the fourth diagnosis time t 4;
if yes, the CCU judges the vacuum main breaker to have a fault and sends alarm information.
6. A method for predicting faults of a vacuum main breaker fault diagnosis and prediction system based on any one of claims 1 to 5, which is characterized by comprising the following steps: the CCU accumulates the total times of the output opening/closing instructions of the vacuum main circuit breaker, acquires the total opening/closing time of the vacuum main circuit breaker, divides the total time by the total times to obtain the average opening/closing time of the vacuum main circuit breaker, and when the average time exceeds a limit value, sends out early warning information for predicting the fault of the vacuum main circuit breaker;
the method for acquiring the total opening/closing time of the vacuum main breaker by the CCU comprises the following steps of recording and accumulating the opening/closing time of the vacuum main breaker acquired each time,
the CCU outputs a control instruction for closing or opening the vacuum main breaker and starts timing;
II, the signal acquisition module acquires the state of the auxiliary contact and sends the state to the CCU through the TSN;
or/and the TCU acquires the secondary side voltage and sends the secondary side voltage to the CCU through the TSN;
and III, the CCU acquires that the vacuum main breaker is successfully closed or opened, and the timing is finished.
7. The method for predicting the fault of the main vacuum circuit breaker according to claim 6, wherein in the step III, when the voltage of the secondary side is within a normal range of the voltage of a contact network or/and the auxiliary contact is in a closed state, the main vacuum circuit breaker is successfully closed; when the voltage of the secondary side is lower than the normal range of the network voltage of the contact network, or/and the state of the auxiliary contact is in a disconnection state, the vacuum main breaker is successfully disconnected.
8. A method for fault diagnosis based on the fault diagnosis and prediction system of the vacuum main breaker as claimed in any one of claims 1 to 5, comprising: after the CCU sends out a closing instruction, within a first diagnosis time t1, the voltage of the secondary side is lower than the normal range of the contact network voltage, or the auxiliary contact is still disconnected;
or after the CCU sends out a disconnection instruction, within a second diagnosis time t2, the voltage of the secondary side is within a normal range of the voltage of the contact network, or the auxiliary contact is still closed;
the CCU determines that the vacuum main breaker is faulty and sends an alarm message.
9. The method of vacuum main breaker fault diagnosis of claim 8, further comprising: when the CCU knows that the state of the auxiliary contact is closed, the CCU judges whether the secondary side voltage is lower than the normal range of the contact network voltage within a third diagnosis time t 3;
or when the CCU knows that the auxiliary contact is disconnected, the CCU judges whether the secondary side voltage is in the normal range of the contact network voltage within the fourth diagnosis time t 4;
if so, the vacuum main breaker breaks down and sends alarm information.
10. A locomotive comprising a vacuum main breaker fault diagnosis and prognosis system according to any of claims 1 to 5.
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445657A (en) * | 2011-12-20 | 2012-05-09 | 南车株洲电力机车有限公司 | Method and device for detecting faults of main circuit breaker of locomotive |
| CN104297682A (en) * | 2014-11-10 | 2015-01-21 | 河北工业大学 | Protection device for electrical life test of circuit breaker and operating mode of protection device |
| CN104392288A (en) * | 2014-12-16 | 2015-03-04 | 广西电网公司电力科学研究院 | High-voltage circuit breaker component maintaining method |
| JP2017009552A (en) * | 2015-06-26 | 2017-01-12 | 株式会社東芝 | Dc breaker test method |
| CN106772014A (en) * | 2016-12-30 | 2017-05-31 | 中车长春轨道客车股份有限公司 | A kind of miniature circuit breaker electric life test system and method |
| CN106885983A (en) * | 2015-12-15 | 2017-06-23 | 江苏德春电力科技股份有限公司 | Breaker mechanic property on-Line Monitor Device |
| CN206595613U (en) * | 2017-04-07 | 2017-10-27 | 国网冀北电力有限公司唐山供电公司 | A kind of handcart circuit breaker contact time-counting device |
| CN207282429U (en) * | 2017-07-21 | 2018-04-27 | 安徽信息工程学院 | Breaker service life precaution device |
| CN108226770A (en) * | 2017-12-20 | 2018-06-29 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of circuit breaker failure diagnostic method |
| CN109703368A (en) * | 2018-12-10 | 2019-05-03 | 中车大连机车车辆有限公司 | Locomotive high-voltage system redundancy control method and system |
| CN110261768A (en) * | 2019-07-19 | 2019-09-20 | 长沙理工大学 | Electrical power distribution automatization system primary cut-out state monitoring method |
| CN214427573U (en) * | 2020-11-27 | 2021-10-19 | 国网宁夏电力有限公司电力科学研究院 | High-voltage circuit breaker diagnostic system |
-
2022
- 2022-01-04 CN CN202210002967.8A patent/CN114325377A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102445657A (en) * | 2011-12-20 | 2012-05-09 | 南车株洲电力机车有限公司 | Method and device for detecting faults of main circuit breaker of locomotive |
| CN104297682A (en) * | 2014-11-10 | 2015-01-21 | 河北工业大学 | Protection device for electrical life test of circuit breaker and operating mode of protection device |
| CN104392288A (en) * | 2014-12-16 | 2015-03-04 | 广西电网公司电力科学研究院 | High-voltage circuit breaker component maintaining method |
| JP2017009552A (en) * | 2015-06-26 | 2017-01-12 | 株式会社東芝 | Dc breaker test method |
| CN106885983A (en) * | 2015-12-15 | 2017-06-23 | 江苏德春电力科技股份有限公司 | Breaker mechanic property on-Line Monitor Device |
| CN106772014A (en) * | 2016-12-30 | 2017-05-31 | 中车长春轨道客车股份有限公司 | A kind of miniature circuit breaker electric life test system and method |
| CN206595613U (en) * | 2017-04-07 | 2017-10-27 | 国网冀北电力有限公司唐山供电公司 | A kind of handcart circuit breaker contact time-counting device |
| CN207282429U (en) * | 2017-07-21 | 2018-04-27 | 安徽信息工程学院 | Breaker service life precaution device |
| CN108226770A (en) * | 2017-12-20 | 2018-06-29 | 中国南方电网有限责任公司超高压输电公司天生桥局 | A kind of circuit breaker failure diagnostic method |
| CN109703368A (en) * | 2018-12-10 | 2019-05-03 | 中车大连机车车辆有限公司 | Locomotive high-voltage system redundancy control method and system |
| CN110261768A (en) * | 2019-07-19 | 2019-09-20 | 长沙理工大学 | Electrical power distribution automatization system primary cut-out state monitoring method |
| CN214427573U (en) * | 2020-11-27 | 2021-10-19 | 国网宁夏电力有限公司电力科学研究院 | High-voltage circuit breaker diagnostic system |
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