| 引用本文: | 喇 军,刘 宇,李仲青,等.继电保护装置失效的温度影响特性及其失效率预计方法[J].电力系统保护与控制,2025,53(8):168-177.[点击复制] |
| LA Jun,LIU Yu,LI Zhongqing,et al.Temperature influence characteristics of relay protection device failure and its failure rate prediction method[J].Power System Protection and Control,2025,53(8):168-177[点击复制] |
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| 摘要: |
| 继电保护装置是电力系统的第一道防线，其可靠性至关重要。温度是导致继电保护装置失效、影响自身可靠性的主导因素。然而，目前继电保护装置可靠性影响分析，特别是其失效率预计，鲜见考虑温度影响。针对上述问题，详细分析了温度对继电保护装置的影响特性，并给出了考虑温度的失效率预计方法。首先，介绍了典型保护装置的架构，分析了不同安装环境下的传热形式和温度特点，并研究了装置内部的温度分布特性。其次，从可靠性物理的角度定性分析了装置失效的温度影响特性，并结合装置架构，提出了考虑温度的继电保护装置失效率预计方法。最后，结合不同环境下的装置内部实测温度和失效率预计结果，结合工程数据和经验，验证了方法的合理性。 |
| 关键词: 继电保护装置 温度 影响特性 失效率预计 |
| DOI：10.19783/j.cnki.pspc.240891 |
| 投稿时间：2024-07-10修订日期：2024-09-30 |
| 基金项目:国家重点研发计划项目资助(2021YFB2401000) |
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| Temperature influence characteristics of relay protection device failure and its failure rate prediction method |
| LA Jun1,LIU Yu2,LI Zhongqing3,WANG Yuqian1,XUE Ancheng1,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) |
| 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. |
| Key words: relay protection device temperature influence characteristic failure rate prediction |
