智能变电站继电保护系统可靠性分析

Reliability Analysis of Relay Protection System in Intelligent Substation

继电保护系统是变电站的主要构成部分,对其稳定运行具有重要作用,而高压供电线路中继电保护设备在供电网络中应用点位多而杂,导致继电保护系统出现故障的概率较高,而且故障位置查询及其维修都很不方便。因此,提高继电保护系统的可靠性,对供电网络进一步稳定运行具有重要意义。为了提高继电保护系统的可靠性,通过对变电站典型继电保护系统的结构进行分析,构建智能变电站继电保护系统精确合理的可靠性计算模型,根据模型参数变量优化变电站继电保护系统,发挥出系统组件的重要性,并简化了系统的操作和维护,使供电线路继电保护系统的运行更加可靠。

Relay protection system is the main component of substation,it plays an important role in its stable operation,and the application points of relay protection equipment in the high-voltage power supply line in the power supply network are numerous and miscellaneous,which leads to the high probability of failure in the relay protection system,and it is inconvenient to query and maintain the fault location.Therefore,it is of great significance to improve the reliability of the relay protection system for the further stable operation of the power supply network.In order to improve the reliability of relay protection system,through the structural analysis of typical relay protection system in substation,the accurate and reasonable reliability calculation model of relay protection system in intelligent substation was constructed.According to the model parameter variables,the substation relay protection system was optimized,the importance of system components was displayed,and the operation and maintenance of the system were simplified,so that the operation of the power supply line relay protection system is more reliable.