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A fuzzy relation based fault section diagnosis method for power systems using operating sequences of protective devices

机译:基于保护装置工作顺序的电力系统故障区间诊断方法

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This paper proposes a novel fault section diagnosis method for power systems based on the fuzzy relation theory. Especially, the proposed method utilizes information on operating time sequences of the actuated relays and the tripped circuit breakers; therefore, the method has the capability of inferring the fault sections correctly even for the complicated multiple faults. The method proposed in this paper is intended to develop an expert system for fault section diagnosis of power systems focusing on utilizing operation sequences of protective devices. The inference is basically executed by sagittal diagrams representing the fuzzy relations. Using operating time sequences of protective devices involving the faults, the method enhances the performance of diagnosing the fault section. In the case studies for real power system, it provided less fault section candidates than without considering the time sequences. As a result, the method reduced the uncertainty and ambiguity for diagnosing the final fault section.
机译:提出了一种基于模糊关系理论的电力系统故障区间诊断方法。特别地,所提出的方法利用了关于致动继电器和跳闸断路器的操作时间序列的信息。因此,该方法即使在复杂的多重故障中也具有正确推断故障断面的能力。本文提出的方法旨在开发一种专注于利用保护装置的操作顺序的电力系统故障部分诊断的专家系统。推断基本上由代表模糊关系的矢状图执行。通过使用涉及故障的保护装置的操作时间序列,该方法提高了诊断故障部分的性能。在实际电力系统的案例研究中,与不考虑时序的情况相比,它提供的故障部分候选更少。结果,该方法减少了诊断最终故障部分的不确定性和不确定性。

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