Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor
When a 35 kV distribution network has the problem of insufficient reactive power, the input of a shunt reactor is a common compensation method. Vacuum circuit breakers are widely used in 35 kV distribution networks because of their superior arc extinguishing performance and convenient maintenance. H...
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| Language: | English |
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MDPI AG
2025-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/5/1274 |
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| author | Jing Chen Xiaoyue Chen Siying Feng Xinmeng Liu Qin Liu |
| author_facet | Jing Chen Xiaoyue Chen Siying Feng Xinmeng Liu Qin Liu |
| author_sort | Jing Chen |
| collection | DOAJ |
| description | When a 35 kV distribution network has the problem of insufficient reactive power, the input of a shunt reactor is a common compensation method. Vacuum circuit breakers are widely used in 35 kV distribution networks because of their superior arc extinguishing performance and convenient maintenance. However, in recent years, accidents involving vacuum circuit breakers breaking shunt reactors have occurred more frequently in China, such as high-frequency phase-to-phase short circuits, inter-turn burning losses, bus outlet short circuits, etc., which can cause serious damage and pose a greater threat to the safety of the power system. This paper focuses on the switching overvoltage generated by the vacuum circuit breaker cutting off the shunt reactor. Firstly, the mechanism of overvoltage generation is analyzed theoretically. It is concluded that the equivalent chopping current of the other two phases caused by the continuous reignition of the first open phase is the root cause of the high-amplitude interphase overvoltage. Based on the MODELS custom programming module in EMTP/ATP, according to the process of breaking and reigniting the circuit breaker, this paper uses Fortran language to compile the program and establishes a model of a vacuum circuit breaker, including power frequency current interception, high-frequency current, zero-crossing, breaking, and arc reignition modules. The vacuum circuit breaker is simulated for hundreds of continuous reignitions in milliseconds. Finally, a simulation study on the overvoltage suppression measures of a 35 kV shunt reactor is carried out. The comprehensive comparison of various suppression measures provides a reference for the reasonable selection of actual engineering conditions. |
| format | Article |
| id | doaj-art-4280bd33be784e598bde813b417e3433 |
| institution | DOAJ |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-4280bd33be784e598bde813b417e34332025-08-20T02:53:02ZengMDPI AGEnergies1996-10732025-03-01185127410.3390/en18051274Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt ReactorJing Chen0Xiaoyue Chen1Siying Feng2Xinmeng Liu3Qin Liu4Beijing Electric Power Economic and Technological Research Institute Co., Ltd., Beijing 100055, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, ChinaSchool of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, ChinaBeijing Electric Power Economic and Technological Research Institute Co., Ltd., Beijing 100055, ChinaBeijing Electric Power Economic and Technological Research Institute Co., Ltd., Beijing 100055, ChinaWhen a 35 kV distribution network has the problem of insufficient reactive power, the input of a shunt reactor is a common compensation method. Vacuum circuit breakers are widely used in 35 kV distribution networks because of their superior arc extinguishing performance and convenient maintenance. However, in recent years, accidents involving vacuum circuit breakers breaking shunt reactors have occurred more frequently in China, such as high-frequency phase-to-phase short circuits, inter-turn burning losses, bus outlet short circuits, etc., which can cause serious damage and pose a greater threat to the safety of the power system. This paper focuses on the switching overvoltage generated by the vacuum circuit breaker cutting off the shunt reactor. Firstly, the mechanism of overvoltage generation is analyzed theoretically. It is concluded that the equivalent chopping current of the other two phases caused by the continuous reignition of the first open phase is the root cause of the high-amplitude interphase overvoltage. Based on the MODELS custom programming module in EMTP/ATP, according to the process of breaking and reigniting the circuit breaker, this paper uses Fortran language to compile the program and establishes a model of a vacuum circuit breaker, including power frequency current interception, high-frequency current, zero-crossing, breaking, and arc reignition modules. The vacuum circuit breaker is simulated for hundreds of continuous reignitions in milliseconds. Finally, a simulation study on the overvoltage suppression measures of a 35 kV shunt reactor is carried out. The comprehensive comparison of various suppression measures provides a reference for the reasonable selection of actual engineering conditions.https://www.mdpi.com/1996-1073/18/5/1274reactorvacuum circuit breakerinterrupt shunt reactor overvoltageequivalent closureovervoltage suppression measures |
| spellingShingle | Jing Chen Xiaoyue Chen Siying Feng Xinmeng Liu Qin Liu Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor Energies reactor vacuum circuit breaker interrupt shunt reactor overvoltage equivalent closure overvoltage suppression measures |
| title | Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor |
| title_full | Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor |
| title_fullStr | Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor |
| title_full_unstemmed | Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor |
| title_short | Overvoltage Simulation Analysis and Suppression of Breaking in a 35 kV Shunt Reactor |
| title_sort | overvoltage simulation analysis and suppression of breaking in a 35 kv shunt reactor |
| topic | reactor vacuum circuit breaker interrupt shunt reactor overvoltage equivalent closure overvoltage suppression measures |
| url | https://www.mdpi.com/1996-1073/18/5/1274 |
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