一种优化型电网故障诊断的实用改进模型

A practical refined optimization model for power grid fault diagnosis

基于保护和断路器状态信息的优化型故障诊断,是目前为止为数不多的已有实际应用的诊断方法。对经典的优化型故障诊断模型进行了深入分析,找出了其中的不足。然后在只基于保护和断路器状态信息的情况下,提出了在保证不漏判的前提下尽量减少误判的诊断原则。通过对现有模型和断路器期望表达式的改进,达到了这一目标,解决了原有模型在警报信息丢失时可能发生漏判的严重问题,并兼顾减少误判。该模型可直接应用于现有优化型故障诊断系统当中。

Arithmetic based on status information of protection and switch is one of the few algorithms,which has been applied practically.This paper deeply analyses the typical optimization model for fault diagnosis and finds its defects.Then a diagnosis principle is brought up based on status information of protection and switch only to reduce the false alarming rate under the premise of no missing report.In the typical model,it is possible to leave out some elements when the alarm is missing.This paper wipes out this problem and simultaneously reduces erroneous judgment by refining the model and expected value of breaker.The new model can be applied directly in the optimization power grid fault diagnosis system.