重庆大学学报2017，Vol.40Issue(9)：47-56,10.DOI:10.11835/j.issn.1000-582X.2017.09.006
柔性直流馈入下交流输电线路单端故障测距分析
Performance analysis of single-terminal fault location for transmission lines in an HVDC/AC interconnected power system
摘要
Abstract
The operation principle and characteristics of flexible high voltage direct current (HVDC) is different from conventional AC and DC transmission.With the application of flexible HVDC technology,the fault characteristics of AC power system may change significantly,and the fault location algorithms based on conventional AC power system face challenges.Therefore,based on the operating principle of flexible HVDC,the operation characteristics of converter was analyzed when flexible HVDC/AC side has fault.The analytic expression of short-circuit current in AC side was derived with converter unprotected,current limited and converter blocked.The influencing rules of different transient operating conditions on the performance of single-terminal fault location for transmission lines were analyzed.It is concluded that the performance of single-terminal fault location for transmission lines in an HVDC/AC interconnected power system is influenced by the converter-side voltage dip coefficient and the referenced reactive power of the converter.And the correctness of theoretical analysis is verified by PSCAD/EMTDC simulation.关键词
柔性直流输电/单端故障测距/暂态特性/短路故障/限流保护Key words
flexible HVDC/single-terminal fault location/transient characteristic/short circuit failure/current-limiting protection分类
信息技术与安全科学引用本文复制引用
余锐,肖超,陈愚,欧阳金鑫,熊俊,熊小伏..柔性直流馈入下交流输电线路单端故障测距分析[J].重庆大学学报,2017,40(9):47-56,10.基金项目
国家自然科学基金资助项目(51407017) （51407017）
国家电网公司科技项目资助(XNFB-201605-FW-07) （XNFB-201605-FW-07）
国家重点研发计划智能电网技术与装备重点专项(2016YFB0900604).Supported by National Natural Science Foundation of China(51407017),the Science Foundation of the State Grid Corporation of China(XNFB-201605-FW-07) and Key project of smart grid technology and equipment of national key research and development plan of china(2016YFB0900604). （2016YFB0900604）
