一种改进的电网故障诊断解析模型研究  

An Improved Analytical Model for Fault Diagnosis in Power Grid

作　　者：于雪雪 杨文辉[1,2] 周红[3] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]三峡大学梯级水电站运行与控制湖北省重点实验室,湖北宜昌443002 [3]国网七台河供电公司,黑龙江七台河154600

出　　处：《电工电气》2017年第11期10-13,共4页Electrotechnics Electric

摘　　要：针对保护或断路器出现拒动条件下,保护期望动作状态计算结果与实际动作逻辑间可能出现失配的原因进行了分析。通过计及主保护、近后备保护、远后备保护和断路器失灵保护间相互制约关系,给出了一种电网故障诊断模型解析规则的改进方法。仿真算例表明,所提方法能够提高故障诊断模型目标函数的计算精度,获得更加合理的故障诊断结果。In allusion to the occurrence of misoperation in protective relays and circuit breakers, this paper analyzed the cause that the calculating results of expected action state mismatched the actual operation results of protective relays. By considering the mutual interaction relationship among main protection, near backup protection, far backup protection and circuit breakers failure protection, this paper gave the amended analytical rules of a kind of grid fault diagnosis model. Simulation examples show the proposed method may improve the calcula-tion accuracy of object functions of fault diagnosis models, and thus obtain more reasonable fault diagnosis results.

关 键 词：故障诊断 解析模型 继电保护 报警信息 电力系统 

分 类 号：TM711[电气工程—电力系统及自动化]