核电厂继电器加速老化分析及管理研究

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Analysis and Management of Accelerated Aging of Relay in NPPs

摘要: 通过对大亚湾和岭澳核电站中压配电盘的中间和出口继电器老化与失效数据进行统计,分析核电厂继电器加速老化的主要因素。继电器加速老化的影响因素为运行环境,主要是湿度、温度和振动冲击;老化机理为氧化腐蚀、机械磨损、电磨损、有机气体腐蚀、绝缘老化和电磁干扰。建议对继电器分类管理、替代使用,进行周期检测、更换或维护。
- 继电器 /
- 加速老化 /
- 可靠性
Abstract: This paper reveals the main factors of accelerated the aging of relay through statistical analysis of aging and failure data of intermediate relay and output relay for MV distribution board in Daya Bay nuclear power plant and Ling'ao nuclear power plant.The factors of accelerating relay aging are operation context including humidity,temperature,vibration impact,and etc.,and aging mechanism including oxidation corrosion,mechanical wear,electrical wear,organic gas corrosion,insulation aging,electromagnetic interference,and etc.The suggested measures are the classified management,relay replacement,periodic check,and periodic replacement or maintenance.
- Relay /
- Accelerated aging /
- Reliability