Secondary system fault positioning method based on improved Bayesian algorithm

• Main Authors: YANG CHAO, WANG XIN, LIU WENXUE, LI CONGCONG, SHI FANGFANG, TANG YI, ZHAO BINCHAO, LI NA, ZHANG QIANG, WANG YONG, GENG YUJIE, LIANG ZHENGTANG, SUN KONGMING, LIU MENG, GUAN TI, BAI YINGWEI, LI YUDUN, TONG XINYUAN, SUN JINGWEN, ZHANG GUOHUI, LI KUAN, WANG YONGBO
• Format: Patent
• Language: Chinese; English
• Published: 26.02.2021
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PHYSICS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention discloses a secondary system fault positioning method based on an improved Bayesian algorithm. An intelligent algorithm combining a virtual-real loop mapping method based on topologicalassociation and an improved Bayesian theory is adopted for solving. When a fault occurs, complete fault information is difficult to obtain, an alarm may be lost, false, out-of-order, repeated, incomplete and the like, and a fault positioning result is affected. Therefore, a fault information completeness concept is provided, and in combination with the fault posterior probability, the fault-alarmdeterminacy of a suspicious fault element obtained through a topology-associated virtual-real loop mapping method is calculated, when the most possible previous fault completely covers an observed alarm set, it is considered that the optimal fault element set is found. According to the method, the fault positioning precision is improved. 一种基于改进贝叶斯算法的二次系统故障定位方法，采用基于拓扑关联的虚实回路映射法与改进的贝叶斯理论相结合的智能算法进行求解。发生故障时，完备的故障信息难以获取，告警可能丢失、