中国电机工程学报2011，Vol.31Issue(28)：112-119,8.
利用电流固有频率的VSC-HVDC直流输电线路故障定位
A Novel Fault-location Method for VSC-HVDC Transmission Lines Based on Natural Frequency of Current
摘要
Abstract
The natural frequency signal of voltage source converter HVDC （VSC-HVDC） transmission lines is more obvious than that of AC lines in transient process, As the impact of the shunt capacitor on both sides of the DC lines in VSC-HVDC, the system impedance can be equivalent to capacitor impedance in the natural frequency, and its value is very small. The traveling wave is total reflection in the system side. Consequently, the natural frequency of the VSC-HVDC transmission lines is only related to fault distance and wave speed. Accordingly, a single-end fault location method was proposed through the spectral analysis of current using Prony algorithm to obtain its natural frequency. Simulation results show that accurate fault location of HVDC transmission lines can be achieved with the proposed method.关键词
电压源换流器型直流输电/直流输电线路/故障定/位/固有频率Key words
voltage source converter HVDC（VSC-HVDC）/HVDC transmission line/fault location/natural frequency分类
信息技术与安全科学引用本文复制引用
蔡新雷,宋国兵,高淑萍,索南加乐,李广..利用电流固有频率的VSC-HVDC直流输电线路故障定位[J].中国电机工程学报,2011,31(28):112-119,8.基金项目
基金项目：国家自然科学基金项目（51037005,51177128). （）
