CAJ | 학술논문

变电站故障诊断对于事故后系统快速恢复正常运行具有重要的意义.针对变电站故障诊断中不确定信息的多源性和故障诊断的实时性,以变电站的保护信息为基础,提出了基于模糊因果网络(FCE-Nets)的变电站故障诊断方法.根据变电站各保护间的因果关系将元件分成三类基本关联节点,通过故障电气量关联函数改进保护信息的缺失校核机制,利用FCE-Nets进行逆向推理.在云会智能变电站上的应用表明,在变电站发生告警时本方法能够及时有效地进行故障诊断.
변전참고장진단대우사고후계통쾌속회복정상운행구유중요적의의.침대변전참고장진단중불학정신식적다원성화고장진단적실시성,이변전참적보호신식위기출,제출료기우모호인과망락(FCE-Nets)적변전참고장진단방법.근거변전참각보호간적인과관계장원건분성삼류기본관련절점,통과고장전기량관련함수개진보호신식적결실교핵궤제,이용FCE-Nets진행역향추리.재운회지능변전참상적응용표명,재변전참발생고경시본방법능구급시유효지진행고장진단.
Substation fault diagnosis is of great importance to the restoration of power systems. To deal with the real-time performance and uncertainty factors of fault diagnosis in a substation, based on the protection information, a fault diagnosis method based on fuzzy cause-effect networks (FCE-Nets) algorithm is proposed. The elements of substation are divided into three kinds of basic correlated nodes by the cause-effect relationship between delay protection equipments, and verification mechanism of the missing information is optimized by correlated function of fault signals, then the fault section is judged with backward inference based on FCE-Nets. Case study of Yunhui substation demonstrates the proposed method has an effective and prompt performance when the fault alarms.