基于多端差动的风电场集电线路保护新原理  

New Principle of Wind Farm Collecting Power Line Protection Based on Multi-Terminal Differentials

作　　者：黄景光[1,2] 郑淑文[1] 林湘宁[3] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]新能源微电网湖北省协同创新中心(三峡大学),湖北宜昌443002 [3]华中科技大学电气与电子学院,湖北武汉430074

出　　处：《电网与清洁能源》2016年第9期102-106,共5页Power System and Clean Energy

基　　金：国家自然科学基金项目(51477090)~~

摘　　要：分析了风电场故障对集电线路电流保护及距离保护的影响,提出了多端差动的单元式保护与风电场多段保护,并通过PSCAD/EMTDC进行了仿真,验证了多端差动保护动作的正确性,得到多端差动保护提高了风电场集电线路的保护灵敏度与可靠性,具有较高的准确度和灵敏度。This paper analyzes effect of wind farm on the current protection and distance protection, puts forward the multi-terminal unit protection and multi-section protection for wind farms. The EMTDC/PSCAD simulation suggests that the operation of multi-terminal differential protection is correct, and sensitivity and reliability of the electric circuit protection of the wind farm is improved with high accuracy and sensitivity with the muhi-terminal differential protection.

关 键 词：风电场 集电线路 多端差动 多段保护 PSCAD/ EMTDC仿真 

分 类 号：TM614[电气工程—电力系统及自动化]