Study on Wide-area Backup Protection System for the Smart Grid
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.
Wide-area protection:Current differential:Graph theory:protection zone:Smart grid
Yi Lv Dahai You Ke Wang Liang Wang Zhenhai Chen Simin Huo
Department of Power System and Automation Huazhong University of Science and Technology Wuhan,Hubei Hunan Electric Power Corporation Dispatches & Communication Bureau Changsha,Hunan 410007
国际会议
威海
英文
218-224
2011-07-06（万方平台首次上网日期，不代表论文的发表时间）