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| Temperature influence characteristics of relay protection device failure and its failure rate prediction method |
| DOI：10.19783/j.cnki.pspc.240891 |
| Key Words:relay protection device temperature influence characteristic failure rate prediction |
| Author Name | Affiliation | | LA Jun1 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China | | LIU Yu2 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China | | LI Zhongqing3 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China | | WANG Yuqian1 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China | | XUE Ancheng1 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China | | SHU Zhihuai2 | 1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power
University, Beijing 102206, China
2. National Power Dispatch and Control Center, State Grid Corporation of China,
Beijing 100031, China
3. China Electric Power Research Institute, Beijing 100192, China |
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| Abstract:Relay protection devices are the first line of defense in power systems, and their reliability is crucial. Temperature is the primary factor that leads to the failure of relay protection devices, significantly affecting their reliability. However, current reliability impact analyses of relay protection devices, particularly their failure rate prediction, rarely consider the influence of temperature. In view of the above problems, the influence characteristics of temperature on relay protection devices are analyzed in detail, and a failure rate prediction method considering temperature is presented. First, the architecture of typical protection devices is introduced. The heat transfer forms and temperature characteristics in different installation environments are analyzed, and the temperature distribution characteristics of the device are studied. Next, reliability physics is used to quantitatively analyze the temperature influence characteristics of device failure. Combined with the device architecture, a failure rate prediction method for a relay protection device considering temperature is then proposed. Finally, from the measured temperature and failure rate prediction results in different environmental conditions, the rationality of the proposed method is verified by combining with the engineering data and experience. |
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