A Novel Real-time Estimation Method for Fault Current of Inverter-Interfaced Distributed Generations T Connecting in Feeder
The acquisition for fault currents of gridconnected distributed generations is of great signi- ficance to improve the performance of protection in distribution network. Therefore, this paper proposes a novel realtime estimation method for fault currents of distributed generations. Considering the low voltage ride through (LVRT) control strategy, the fault equivalent model of inverter-interfaced distributed generation (IIDG) is established firstly. Besides, a method for calculating the positive-sequence voltage at the point of common coupling (PCC) is put forward. Then, based on the electric information including current and voltage at both sides of the feeder, a real-time estimation method for fault current of IIDGs is proposed. The accuracy of the proposed method is verified by a 10kV distribution network with multi-IIDGs established in PSCAD/EMTDC at last.
inverter-interfaced distributed generations grid connection estimation method fault current real-time
HAN Bowen WANG Gang LI Haifeng CAI Yingqian ZHONG Qing
South China University of Technology,Guangzhou 510641,China
国际会议
西安
英文
1-5
2016-09-01（万方平台首次上网日期，不代表论文的发表时间）