Research on a line protection method for DC distribution system based on parameter identification

摘要：

　　A DC distribution line protection method based on parameter identification is proposed. The parameter equation in the conditions of monopolar grounding fault and pole-to-pole fault is deduced by analyzing DC distribution line faults, the protection scheme for DC distribution line is researched based on the principle of parameter identification. The protection scheme utilizes the voltage and current information at protection installation position, fault distance and transition resistance are calculated by method of the least square. The distinction of fault section and determination of fault position are achieved by comparing fault distance with corresponding line length. The model of DC distribution system is built on the real time simulation platform RT-LAB. Numerous tests are carried out on different transition resistances and fault positions, different line types of DC distribution line fault. Simulation results show that the line protection scheme for DC distribution system based on parameter identification is effective.

关键词： DC Distribution System Line Protection Parameter Identification

作者: YANG Qing DUAN Jiandong ZHOU Yi SUN Yuanbing

作者单位: Department of Electrical Engineering,Xian University of Technology,Xian,Shaanxi,China

会议类型: 国际会议

会议名称: 2016中国国际供电会议(CICED2016)

会议地点: 西安

会议语种:英文

页码: 1-5

在线出版日期: 2016-09-01（万方平台首次上网日期，不代表论文的发表时间）