Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability
High-voltage switchgear is a key control and protection unit in power systems. The reliable operation of the operating mechanism is essential for the reliable opening and closing of the switchgear. This is a vital guarantee for the safety and stability of the power systems. The spring operating mech...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/7/1623 |
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| author | Hongming Ma Guochao Qian Jie Zhang Jiali Chen Fusheng Zhou Pengfeng Qiu Aohua Zhang Ting Wang Xiaofei Yao Zhiyuan Liu |
| author_facet | Hongming Ma Guochao Qian Jie Zhang Jiali Chen Fusheng Zhou Pengfeng Qiu Aohua Zhang Ting Wang Xiaofei Yao Zhiyuan Liu |
| author_sort | Hongming Ma |
| collection | DOAJ |
| description | High-voltage switchgear is a key control and protection unit in power systems. The reliable operation of the operating mechanism is essential for the reliable opening and closing of the switchgear. This is a vital guarantee for the safety and stability of the power systems. The spring operating mechanism is a commonly used actuator for circuit breakers at 12–252 kV. However, a reliability estimation method that is convenient, practical and accurate is still lacking. The aim of this paper is to explore a reliability estimation method based on a stress–strength interference reliability theory and a fatigue life theory. The changing rules of the reliability of the main axis, and the closing pawl and opening pawl in the spring operating mechanism during operations, are achieved. The accuracy of the calculated reliability based on theories of stress–strength interference and fatigue life is verified by adopting a test data statistical reliability model based on Weibull distribution. The results show that the reliability estimation method based on stress–strength interference and fatigue life theories has a high degree of confidence. The maximum tolerance is 0.024. The study would help in providing a useful reference for the optimization and durability estimation of a spring operating mechanism and its key components in high-voltage circuit breakers. |
| first_indexed | 2024-04-24T10:45:56Z |
| format | Article |
| id | doaj.art-c65f8306f880434ca2f70555accb76a6 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-24T10:45:56Z |
| publishDate | 2024-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c65f8306f880434ca2f70555accb76a62024-04-12T13:17:53ZengMDPI AGEnergies1996-10732024-03-01177162310.3390/en17071623Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of ReliabilityHongming Ma0Guochao Qian1Jie Zhang2Jiali Chen3Fusheng Zhou4Pengfeng Qiu5Aohua Zhang6Ting Wang7Xiaofei Yao8Zhiyuan Liu9Electric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650032, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650032, ChinaChina Southern Power Grid Research Institute, Guangzhou 510663, ChinaChina Southern Power Grid Research Institute, Guangzhou 510663, ChinaChina Southern Power Grid Research Institute, Guangzhou 510663, ChinaElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming 650032, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaXi’an High Voltage Appararus Research Institute Co., Ltd., Xi’an 710077, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaState Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, ChinaHigh-voltage switchgear is a key control and protection unit in power systems. The reliable operation of the operating mechanism is essential for the reliable opening and closing of the switchgear. This is a vital guarantee for the safety and stability of the power systems. The spring operating mechanism is a commonly used actuator for circuit breakers at 12–252 kV. However, a reliability estimation method that is convenient, practical and accurate is still lacking. The aim of this paper is to explore a reliability estimation method based on a stress–strength interference reliability theory and a fatigue life theory. The changing rules of the reliability of the main axis, and the closing pawl and opening pawl in the spring operating mechanism during operations, are achieved. The accuracy of the calculated reliability based on theories of stress–strength interference and fatigue life is verified by adopting a test data statistical reliability model based on Weibull distribution. The results show that the reliability estimation method based on stress–strength interference and fatigue life theories has a high degree of confidence. The maximum tolerance is 0.024. The study would help in providing a useful reference for the optimization and durability estimation of a spring operating mechanism and its key components in high-voltage circuit breakers.https://www.mdpi.com/1996-1073/17/7/1623high-voltage circuit breakermotor-energized spring operating mechanismfatigue lifemechanical reliability |
| spellingShingle | Hongming Ma Guochao Qian Jie Zhang Jiali Chen Fusheng Zhou Pengfeng Qiu Aohua Zhang Ting Wang Xiaofei Yao Zhiyuan Liu Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability Energies high-voltage circuit breaker motor-energized spring operating mechanism fatigue life mechanical reliability |
| title | Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability |
| title_full | Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability |
| title_fullStr | Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability |
| title_full_unstemmed | Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability |
| title_short | Fatigue Life Estimation of Critical Components in a Motor-Energized Spring Operating Mechanism Based on Theory of Reliability |
| title_sort | fatigue life estimation of critical components in a motor energized spring operating mechanism based on theory of reliability |
| topic | high-voltage circuit breaker motor-energized spring operating mechanism fatigue life mechanical reliability |
| url | https://www.mdpi.com/1996-1073/17/7/1623 |
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