A novel method for multi-fault location utilizing fault fitting degree

Author

Jing Ma ; Dong Xu ; Tong Wang

Author_Institution

State Key Lab. for Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Beijing, China

fYear

2012

fDate

22-26 July 2012

Firstpage

1

Lastpage

5

Abstract

A new algorithm is proposed to locate multi-fault based on fault fitting degree for complex large power grid. In the normal operating condition, the node admittance matrix is formed according to the network topology structure. When multiple faults occur, by analyzing the fault branch node voltage equation, the fault equivalent model of fault branches and node-branch correlation matrix are formed. Based on superposition theorem, the virtual fault location and fitting degree of each combination of faults can be calculated by the least square method. Then fault line and fault location are determined. The simulation results of 10-generator 39-bus system verify the validity and feasibility of this algorithm.

Keywords

correlation methods; fault location; matrix algebra; power grids; power system faults; power system measurement; 10-generator 39-bus system; complex large power grid; fault branches; fault equivalent model; fault fitting degree; fault line; multifault location; network topology structure; node admittance matrix; superposition theorem; virtual fault location; wide-area measurement system; Circuit faults; Educational institutions; Fault location; Fitting; Mathematical model; Power systems; Transmission line matrix methods; Equivalent fault model; Fault fitting degree; Least square method; Multi-fault location; Wide-area measurement system;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Society General Meeting, 2012 IEEE

Conference_Location

San Diego, CA

ISSN

1944-9925

Print_ISBN

978-1-4673-2727-5

Electronic_ISBN

1944-9925

Type

conf

DOI

10.1109/PESGM.2012.6345634

Filename

6345634