含电气量信息的电力系统故障诊断解析模型  

An Analytic Model for Power System Fault Diagnosis Employing Electrical Data

作　　者：董明[1] 张勇[1] 张岩[1] 文福拴[1] 孙维真[2] 王超[2] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027 [2]浙江电力调度通信中心,浙江省杭州市310007

出　　处：《电力系统自动化》2013年第6期55-62,共8页Automation of Electric Power Systems

基　　金：国家科技支撑计划重大资助项目(2011BAA07B02);浙江省电力公司重点科技项目~~

摘　　要：现有的电力系统故障诊断解析模型采用的信息源比较局限,信息冗余度不大,在复杂故障情况下难以得到明确的故障诊断结果。随着以相量测量单元(PMU)为基础的广域测量系统(WAMS)的发展,实时获取准确的系统电气量信息逐步成为可能。在此背景下,发展了能够利用电气量信息的电力系统故障诊断解析模型。首先,利用故障后的断路器状态与电气量快速确定故障区域;然后,对现有的解析模型作了进一步发展,以充分利用电气量信息,并对所发展的优化模型采用遗传算法求解。最后,用算例说明了所发展模型的可行性。仿真结果表明,所提出的方法具有较强的容错能力,可以处理保护和断路器误动/拒动情况以及警报丢失或错误情况。The existing analytic models for power system fault diagnosis generally only employ the state information of protective relays and circuit breakers,and the information redundancy is very limited.As the result,definite diagnosis results may not always be attained for complicated fault scenarios.The development of the phasor measurement unit（PMU） based wide area measurement system（WAMS） has generally made the acquisition of real-time and accurate electrical data possible.Given this background,the existing fault diagnosis analytic model is further developed with the electrical data from WAMS,and can be solved by the well-established genetic algorithm.Firstly,the fault areas are rapidly determined by using the combined data of states of circuit breakers and electrical data.Then,the fault diagnosis is carried out for the identified fault areas using the proposed analytical model.Finally,it is shown by simulation results of a sample system that the developed model is feasible and has good fault-tolerant capability.It can handle complicated fault scenarios with malfunctions of protective relays/circuit breakers as well as distorted/lost alarms.

关 键 词：故障诊断 解析模型 电气信息 相量测量单元 广域测量系统 

分 类 号：TM73[电气工程—电力系统及自动化]