Study on wide-area backup protection system for the smart grid

Author

Lv, Yi ; You, Dahai ; Wang, Ke ; Wang, Liang ; Chen, Zhenhai ; Huo, Simin

Author_Institution

Dept. of Power Syst. & Autom., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2011

fDate

6-9 July 2011

Firstpage

218

Lastpage

224

Abstract

A graph theory based wide-area differential backup protection system which can be used on smart grid is proposed. By means of graph theory, the dynamic online partitioning of protection zones is implemented. Then through current differential calculation in the protection zones obtain the protection criterion and complete the protection function. The system implements primary and backup current differential protection in the whole grid by expanding the protection zones step by step. The system is composed of line protection and bus protection. The bus protection designing in different connection mode and the coordination of line protection and bus protection is considered. The protection system has high selectivity and reliability through simulation verification.

Keywords

graph theory; power engineering computing; power system protection; smart power grids; bus protection; current differential calculation; dynamic online zone partitioning; graph theory; line protection; smart grid; wide area backup protection system; Graph theory; Power system reliability; Protective relaying; Reliability; Smart grids; Substations; Current differential; Graph theory; Smart grid; Wide-area protection; protection zone;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011 4th International Conference on

Conference_Location

Weihai, Shandong

Print_ISBN

978-1-4577-0364-5

Type

conf

DOI

10.1109/DRPT.2011.5993892

Filename

5993892