电力系统自动化2013，Vol.37Issue(6)：102-106,113,6.DOI:10.7500/AEPS201111019
基于补偿电压的高压直流输电线路单端电气量保护
Monopole Protection for HVDC Transmission Lines Based on Compensating Voltage
摘要
Abstract
Based on the distributed parameter model of the HVDC transmission line, the compensating voltage at the end of the protection zone is calculated according to the electrical quantities measured at local convert station. A new monopole protection principle can then be constructed with the calculating voltage and the measuring voltage. When a metallic ground fault or low-impedance ground fault occurs in the line, as the compensating voltage at the end of the line has opposite polarity with measuring voltage at the local convert station, the protection criterion can act instantaneously. When a high-impedance ground fault occurs in the line, compensating voltage at the end of the line is lower than the preset threshold which is set according to the transition resistance. And the protection criterion can act in concert with interrelated protection principles. The coordination rule of this protection principle should cooperate with other interrelated protection principles. It is complete, and it can be put into operation during the whole process of fault. Simulation results have testified the feasibility of the principle.关键词
高压直流输电/线路保护/分布参数模型/补偿电压Key words
HVDC transmission/line protection/distributed parameter model/compensating voltage引用本文复制引用
宋国兵,饶菁,高淑萍,蔡新雷,索南加乐..基于补偿电压的高压直流输电线路单端电气量保护[J].电力系统自动化,2013,37(6):102-106,113,6.基金项目
国家自然科学基金资助项目(51177128) （51177128）
已申请国家发明专利(申请号:201110135534). （申请号:201110135534）
