As taking the restart of equipment components as the core,the inspection period is longer,which leads to a longer re-covery time of relay protection equipment operating conditions and increase of rejection/misoperation probability.Therefore,a new intelligent recovery method of relay protection equipment under variable operating conditions is proposed.This paper ex-tracts the high-order information and low-order information of variable operating conditions,considers the equipment operating environment and operating state correction coefficient,calculates the equipment rejection/misoperation probability,and deter-mines whether the restart recovery operation is required.By taking the optimized restart tree as the core,the intelligent recov-ery mechanism of relay protection equipment is established,the restart scheme of fault components is determined,and the intel-ligent recovery of equipment under variable operating conditions is completed by combining the recursive recovery concept.The experimental results show that the recovery time of relay protection equipment under variable operating conditions is only 49.82 s after applying the proposed method.It provides a new idea to ensure the periodic health of relay protection equipment.
关键词
优化重启树/继电保护设备/运行工况/递归恢复/拒动概率/高阶信息
Key words
optimized restart tree/relay protection equipment/operating condition/recursive recovery/rejection/high-order information
维普
万方数据