基于模式匹配的地区电网故障诊断  

Pattern Matching Based Fault Diagnosis for Regional Power Grid

作　　者：赵冬梅[1] 张旭[1] 张东英[1] 刘燕华 魏娟[1] 张虹[1] 

机构地区：[1]华北电力大学电气与电子工程学院,北京市昌平区102206

出　　处：《电网技术》2012年第12期124-129,共6页Power System Technology

基　　金：国家863高技术基金项目(2012AA050201);国家自然科学基金项目(50977024);教育部中央高校基本科研业务费专项资金资助项目(12MS27)~~

摘　　要：根据电网故障诊断的逻辑分析需要,结合故障发生、发展的过程,对故障进行分类,将电网故障分为单一故障、发展型故障、多重故障和连锁故障,分析了不同故障类型的特点及其基本逻辑,确定了相应的分析思路;构建了较为完备的故障分析逻辑体系,提出了采用模式匹配的电网故障诊断方法,基于结线分析完成了对故障时电网网架变化的基本模式的分析,提出了相应故障模式的具体判据;采用过程匹配方法实现了电网故障时故障信息与预先构建的故障区域内各个保护装置的保护基本动作模式的模式匹配;通过构建谓词逻辑实现了对于故障类型的具体判别;介绍了综合上述方法的诊断流程。最后,通过某地区电网实际发生的故障实例,验证了所提方法的有效性。According to the requirement of power grid fault diagnosis in logic analysis, combining with the process of fault occurrence and development the faults are classified, and power grid faults are divided into single fault, developmental fault, multiple fault and cascading fault, and the features and basic logics of different kinds of faults are analyzed and corresponding thinking to analyze them is determined; a more complete logical system for fault analysis is constructed and a power grid fault diagnosis method adopting pattern matching is proposed, and based on analysis of network connection the basic mode of grid framework change during faults has been analyzed and concrete criteria for corresponding fault modes are put forward; using process matching, the pattern matching between fault information during grid faults and basic action mode of each protection device within the pre-built fault area is implemented; by means of constructing predicate logic the concrete judgment of fault types is realized; the diagnosis procedure integrating above-mentioned methods is presented. Finally, the effectiveness of the proposed method is verified by the fault case actually occurred in a certain regional power grid.

关 键 词：故障类型 故障识别 谓词逻辑 模式匹配 

分 类 号：TM734[电气工程—电力系统及自动化] TM711