Research on Condition Monitoring Method of Mechanical Characteristics of Low-Voltage Circuit Breaker

被引：0
|
作者：
Hu B. [1 ,2 ]
Li K. [1 ,2 ]
Niu F. [1 ,2 ]
Zhao C. [1 ,2 ]
机构：
[1] State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin
[2] Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province, Hebei University of Technology, Tianjin
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 13期
关键词：
condition monitoring; contact over-travel; Low-voltage circuit breaker; mechanical components; operating mechanism;
D O I：
10.19595/j.cnki.1000-6753.tces.211497
中图分类号：
学科分类号：
摘要：
As an important protective device in low-voltage distribution system, low-voltage circuit breaker is mainly used to cut off and connect load circuit and cut off fault circuit to ensure the system safe operation. The reliable operation of its internal mechanical components is very important to the operating performance of the low-voltage circuit breaker. With the increase of the number of operations, the mechanical characteristics of the circuit breaker gradually deteriorate, and eventually destroy the normal movement of the operating mechanism, and then cause the failure of closing and opening, and even affect the distribution system. In order to accurately monitor the mechanical characteristics of low-voltage circuit breaker, a condition monitoring method for mechanical characteristics of low-voltage circuit breaker based on the motion characteristics of operating mechanism is proposed. Firstly, according to the motion characteristics of the operating mechanism, the rotation characteristics of mechanism in the process of closing and opening are analyzed, and the characteristics that can reflect the performance of the operating mechanism are selected. Secondly, the effects of contact abrasion, mechanism abrasion and opening spring fracture on the performance of the mechanism are quantitatively analyzed, and the performance monitoring and diagnosis of mechanical parts are realized by monitoring the changes of characteristic quantities in real time. Finally, the influence of contact overtravel performance degradation on opening energy and mechanism performance is quantitatively calculated to realize the monitoring of contact overtravel state. The experimental results show that the proposed method can effectively monitor the state information of the mechanical components of low-voltage circuit breaker, realize the accurate evaluation of the contact overrange state, and provide a new method for the monitoring and diagnosis of the mechanical characteristics of low-voltage circuit breaker. © 2022 Chinese Machine Press. All rights reserved.
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页码：3317 / 3330
页数：13
相关论文
共 27 条
  • [1] Sun Shuguang, Zhang Qiang, Du Taihang, Et al., Fault diagnosis for conventional circuit breaker based on switching coil current, Chinese Journal of Scientific Instrument, 39, 2, pp. 130-140, (2018)
  • [2] Zhao Heng, Xiao Xianyong, Sun Qiuqin, Identifying electric shock in the human body via α dispersion, IEEE Transactions on Power Delivery, 33, 3, pp. 1107-1114, (2018)
  • [3] Sun Shuguang, Zhang Wei, Wang Jingqin, Et al., Mechanical life prediction of low-voltage circuit breaker based on vibration detection during operation, Chinese Journal of Scientific Instrument, 41, 12, pp. 146-157, (2020)
  • [4] Yuan Jiaxin, Zhang Zhewei, Zhou Hang, Et al., Optimal design of parameters for high voltage DC fault current limiter with permanent-magnet-biased saturation, Automation of Electric Power Systems, 44, 13, pp. 135-142, (2020)
  • [5] Li Guoqing, Song Yuheng, Wang Limeng, Et al., Multiport current limiting DC circuit breaker based on voltage clamp principle, Automation of Electric Power Systems, 45, 18, pp. 170-178, (2021)
  • [6] Bian Chunyuan, Liu Shangyue, Xing Haiyang, Et al., Research on fault-tolerant operation strategy of rectifier of square wave motor in wind power system, China Electrotechnical Society Transactions on Electrical Machines and Systems, 5, 1, pp. 62-69, (2021)
  • [7] Zhao Shutao, Wu Chengjian, Li Ming, Et al., Research of circuit breaker mechanical characteristic test method based on normalized cross correlation-pyramid-sector optimization algorithm, Proceedings of the CSEE, 37, 14, pp. 4265-4271, (2017)
  • [8] Liu Yan, Chen Lian, Mechanical fault diagnosis of vacuum circuit breaker based on SOM, Transactions of China Electrotechnical Society, 32, 5, pp. 49-54, (2017)
  • [9] Peng Shiyi, Liu Yan, Zhuo Taotao, Et al., Intelligent diagnosis technology of mechanical defects of high voltage disconnector, Transactions of China Electrotechnical Society, 36, 7, pp. 1356-1367, (2021)
  • [10] Fu Rao, Liang Huimin, Ye Xuerong, Et al., Analysis of the contact overtravel of contactor and its degradation state evaluation, Transactions of China Electrotechnical Society, 35, 1, pp. 125-133, (2020)
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