利用气象等影响要素的电力系统故障元件识别与故障原因分析  

Fault section estimation and fault cause analysis employing meteorological and other impacting factors

作　　者：张小易[1] 徐兵[2] 张岩[2] 钟锦源 文福拴[2,3] 袁宇波[1] 朱海兵 

机构地区：[1]江苏省电力公司电力科学研究院,江苏南京211103 [2]浙江大学电气工程学院,浙江杭州310027 [3]文莱科技大学电机与电子工程系 [4]国网江苏省电力公司电力调度控制中心,江苏南京210024

出　　处：《华北电力大学学报（自然科学版）》2014年第6期14-21,共8页Journal of North China Electric Power University：Natural Science Edition

基　　金：国家科技支撑计划资助项目(2011BAA07B02);国网江苏省电力公司科技项目(JS2014002)

摘　　要：快速识别电力系统中的故障元件和分析引起故障的原因,有助于尽快恢复系统的正常运行和减少停电损失。气象等要素是导致电力系统故障的主要原因之一,但如何在故障诊断中适当计及这些要素的影响是一个有待深入研究的问题。在此背景下,比较系统地考虑了气象等要素对电力系统故障的影响,在现有故障诊断方法的基础上利用故障发生时刻的气象等外部要素情况分析导致故障的原因。首先,根据发生故障前后的电力系统拓扑结构,识别停电区域,确定候选故障元件;在此基础上,以继电保护和断路器状态为信息源,构建了电力系统故障诊断的一种简化模型,从候选的故障元件中确定故障元件。之后,以从污秽监测系统、雷电监测系统、气象预警系统等外部环境监测设备获得的信息与数据以及所确定的故障元件为故障影响要素分析的信息源,分析导致故障的外部影响因素,以帮助系统运行人员快速定位和排除故障,尽快恢复系统正常运行。Prompt fault diagnosis can help restore the power system concerned quickly,and thus reduce outage costs.Meteorological factors,as well as other impacting factors,represent one of the main causes of power system faults,and yet how to appropriately take into account of the influences of these impacting factors in power system fault diagnosis is a challenge task.Given this background,the influences of meteorological and other impacting factors are systematically investigated,and based on an existing fault diagnosis method the meteorological and other impacting factors at the fault occurrence period are employed to analyze the fault cause.First,the outage area is identified so as to attain the suspected fault sections using a network topology analysis method.Then,a simplified fault diagnosis model is presented to identify the fault section （s） from suspected ones by utilizing the state information of protective relays and circuit breakers.Finally,data from the concerned contamination monitoring system,lightning monitoring system,weather pre-warning system,and monitoring equipments for other external environmental factors,together with the estimated fault section （s）,are used for analyzing those factors having impacts on fault occurrence,so as to assist the operators to locate and clear the fault （s）,and ultimately speed the system restoration procedure.

关 键 词：电力系统 故障诊断 故障原因分析 影响要素 气象要素 外部环境要素 

分 类 号：TM732[电气工程—电力系统及自动化]