一种三级协调的配电网预想故障筛选与排序方法  

A three-level coordinated expected fault contingency screening and ranking method for distribution network

作　　者：刘舒 李昆鹏 田书欣 包海龙 符杨 苏向敬 Liu Shu;Li Kunpeng;Tian Shuxin;Bao Hailong;Fu Yang;Su Xiangjing(Electric Power Research Institute of State Grid Shanghai Municipal Electric Power Co.,Ltd.,Shanghai 200437,China;School of Electrical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]国网上海市电力公司电力科学研究院,上海200437 [2]上海电力大学电气工程学院,上海200090

出　　处：《电测与仪表》2020年第18期57-62,共6页Electrical Measurement & Instrumentation

基　　金：国网上海市电力公司科技项目(52094017001R)。

摘　　要：为了提高配电网预想故障集筛选和排序的快速性、准确性,文章以配电网历史故障数据和运行数据为基础,提出一种三级协调的配电网预想故障筛选与排序方法。采用层次云理论计算故障情况下电压、短路电流、有功功率、无功功率损耗和功率因数之间的权重关系,并通过预处理构建支路参数筛选指标,对预想故障集进行预筛选以缩小故障筛选范围。利用π型支路模型,提出基于同步相量测量装置(Phasor Measurement Unit,PMU)的负荷裕度筛选指标和基于PMU的电压稳定排序指标,实现对严重故障的快速筛选与排序。实例分析表明:该方法能全面、准确、高效地实现系统预想故障集筛选与排序。In order to improve the speed and accuracy of the expected fault set screening and sequencing of the distribution network,this paper proposes a three-level coordinated expected fault contingency screening and ranking method for distribution network based on the historical fault data and operation data of distribution network.The hierarchical cloud theory is adopted to calculate the weight relationship between voltage,short-circuit current,active power,reactive power loss and power factor under fault conditions,and the branch parameter screening indicators are constructed by pre-processing to pre-screen the expected fault set,so as to narrow the fault screening range.Using theπ-branch model,a load margin screening index based on phasor measurement unit(PMU)and PMU-based voltage stability ranking index are proposed to achieve rapid screening and sequencing of severe faults.The case study shows that the proposed method can comprehensively,accurately and efficiently implement the expected fault set screening and sorting of the system.

关 键 词：配电网 故障筛选与排序 层次云理论 电压稳定 同步相量测量装置(PMU) 

分 类 号：TM712[电气工程—电力系统及自动化]