计及保护和断路器告警信息可信度的电网故障诊断优化模型

为提高已有电网故障诊断解析模型的容错性与求解效率,提出了计及保护和断路器动作状态告警信息可信度的电网故障诊断优化模型.首先,基于保护及断路器自检信息对告警信息的可信度进行评估.其次,以保护和断路器的告警信息与期望动作状态差异最小、期望动作状态可信度最大为优化目标,构建故障诊断多目标优化模型.进一步线性化优化模型,基于加...

Optimal model of power grid fault diagnosis considering reliability of protection and circuit breaker alarm information

In order to improve the fault tolerance and solving efficiency of existing analytical models for power grid fault diagnosis,this paper proposes an optimization model for power grid fault diagnosis that takes into account the reliability of protection and circuit breaker action state alarm information.First,the reliability of alarm information is evaluated based on the protection and circuit breaker self-test information.Secondly,a multi-objective optimization model is constructed to minimize the difference between the warning information and the expected action state,and maximize the expected action state credibility of protection and circuit breaker.Thirdly,the optimization model is linearized and the optimal solution is obtained based on the weighted sum method and the fuzzy membership function.Finally,the examples verify the efficiency and versatility of the model.The model in this paper can quickly diagnose power grid faults when there are errors in the alarm information,and has good application prospects.