电工技术学报2017，Vol.32Issue(17)：35-46,12.DOI:10.19595/j.cnki.1000-6753.tces.161213
基于多测点正序电压相关性与典型模式匹配寻优的电压暂降源定位
Voltage Sag Source Location Based on the Correlation of Multipoint Positive Sequence Voltage and the Typical Pattern Matching Optimization
摘要
Abstract
A novel method of voltage sag source location based on the correlation of multipoint positive sequence voltage and the typical pattern matching optimization is proposed to make the location results independent of fault type and transition resistance.Firstly,it builds the fault pattern using the positive sequence voltage variation at measuring points and defines the pattern similarity based on the Euclidean distance measure and the Spearman rank correlation coefficient.Then it forms the set of typical patterns by setting up a preset fault at the middle of each branch and clusters it into several subgroups according to the similarity of the measuring sequence and typical patterns.It chooses the corresponding lines of the subgroup with the highest similarity to make up the primary fault line set,which can effectively narrow the searching space.Finally,an optimal estimation model is built to find the optimal matching fault pattern.The object function is to maximize the similarity,the primary fault line and fault distance are chosen as optimization variables.The model is solved by particle swarm optimization algorithm,fault line and fault position can be obtained.The numerical examples of IEEE 30 and IEEE 33 system show the feasibility and validity of the proposed method.The results show that the method can effectively eliminate the influence of fault type and transition resistance and has higher location accuracy than previous methods.关键词
电压暂降/故障定位/相似模式/匹配寻优/相关性Key words
Voltage sag/fault location/pattern similarity/matching optimization/correlation分类
信息技术与安全科学引用本文复制引用
林涌艺,邵振国,张嫣,张逸,吴丹岳..基于多测点正序电压相关性与典型模式匹配寻优的电压暂降源定位[J].电工技术学报,2017,32(17):35-46,12.基金项目
国家自然科学基金项目(51777035)和福建省自然科学基金项目(2016J01219)资助. （51777035）
