基于灰色综合关联理论的电力系统故障诊断方法

为提高电力系统故障诊断的准确性,采用基于灰色综合关联理论的电力系统故障诊断方法,首先建立包括保护、断路器拒动情况下元件-（保护-断路器）分层逻辑关联规则;在识别出故障区域的基础上,将故障信息按逻辑关联规则进行分类,利用灰色综合关联理论对告警信息与标准告警信息进行对比,并运用相似度算法筛选判断结果中的矛盾项,最终得出故障诊断结果,识别出保护和断路器拒动、误动的情况,并将告警信息纠错和复原.

Power System Fault Diagnosis Method Based on the Theory of the Grey Comprehensive Correlation

In order to improve the accuracy of the power system fault diagnosis, and by using power system fault diagnosis method based on the theory of the grey comprehensive correlation, protection--circuit breaker hierarchical logical association rules in refusing action is set up. In identifying the fault zone, the fault information is classified on the basis of logic association rules. The alarm information is compared with the standard alarm information using the grey relation theory. The contradiction is judged by using of similarity algorithm. The results o f fault diagnosis are get, the refusing action and error action of protection and circuit breaker is identified, and the alarm information is corrected and recovered.