The Technology for Selective Coordination of Multilevel Protection in Intelligent Power Distribution System
Zhang Liping1, Cai Chuanqing2, Miao Xiren1
1.College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350116; 2. China Mobile communication group Fujian Co., Ltd, Fuzhou 350000
Abstract Smart grid is the future development direction of the electric industry. The reliability and continuity of the power supply is particularly concerned by people. Multilevel protection in intelligent power distribution is critical. The conventional method for short circuit fault in low-voltage system is over-current protection. But it has disadvantages such as inadequate of speed and reliability and inadequate of the ability to coordinate at each level etc. In order to research the mechanism of the full range of selective coordination of multi-level protection and improve the existing lack of selective protection, based on the review of applied research of selective protection methods of short-circuit fault in recent years, the paper proposed the experimental system and control and test device technology solution of multi-level selective short-circuit fault protection, and provide an experimental basis for research of low-voltage multi-level selective coordination protection.
Zhang Liping,Cai Chuanqing,Miao Xiren. The Technology for Selective Coordination of Multilevel Protection in Intelligent Power Distribution System[J]. Electrical Engineering, 2016, 17(11): 96-100.
2016, Vol. 17 
