中国电机工程学报2011，Vol.31Issue(22)：105-111,7.
VSC-HVDC频变参数电缆线路电流差动保护新原理
Novel Current Differential Protection Principle of VSC-HVDC Considering Frequency-dependent Characteristic of Cable Line
摘要
Abstract
The control system of voltage source converter HVDC （VSC-HVDC） system is complex and its fault tolerance ability is not sufficient. Cable line with frequency dependent characteristic is commonly used in it. A new current differential protection principle of the cable line is proposed. Based on the distributed parameter model, the current at midpoint of cable line can be calculated, and the current differential protection can be implemented. For the calculation of the line currents at any point, a new method is proposed, The simulation results show that the method can identify the fault reliably and rapidly. This method＇s sampling frequency is low and it is not influenced by frequency-dependent parameter and distributed capacitance of the cable line.关键词
电压源换流器型直流输电/电缆线路/电流差动保护/频变参数/分布参数Key words
voltage source converter HVDC （VSC-HVDC）/cable line/current differential protection/frequency-dependent parameter/distributed parameter分类
信息技术与安全科学引用本文复制引用
宋国兵,蔡新雷,高淑萍,索南加乐,李广..VSC-HVDC频变参数电缆线路电流差动保护新原理[J].中国电机工程学报,2011,31(22):105-111,7.基金项目
国家自然科学基金项目（50877061,51037005). （）
