海上风电直流耗能装置和保护配合策略研究  

Research on coordination strategy for an offshore wind power DC chopper device and protection

作　　者：付艳 周晓风 戴国安[1] 崔晨 李传西 黄金海[1] 康建爽 孙巍峰 FU Yan;ZHOU Xiaofeng;DAI Guo'an;CUI Chen;LI Chuanxi;HUANG Jinhai;KANG Jianshuang;SUN Weifeng(XJ Group Corporation,Xuchang 461000,China)

机构地区：[1]许继集团有限公司,河南许昌461000

出　　处：《电力系统保护与控制》2021年第15期178-186,共9页Power System Protection and Control

基　　金：国家重点研发计划项目资助(2016YFB0900600);国家电网公司科技项目资助(52094017000W)。

摘　　要：首先对基于直流耗能装置的交流故障穿越方案进行了理论分析。根据适合海上风电工程的直流耗能装置的拓扑结构,对该直流耗能装置的工作模式、投退策略进行了分析研究。其次研究了带直流耗能装置的大型海上风电直流保护的范围和分区。确定了直流保护动作策略,重点研究了各个直流保护区的保护配置策略。然后研究了直流耗能装置的投退对直流保护功能的影响。重点研究了直流过电压保护与直流耗能投入电压值的配合策略,直流耗能装置的保护功能设计。最后对上述策略进行了仿真试验验证。First,this paper analyzes the AC fault ride-through scheme based on the DC chopper device.Given the topological structure of a DC chopper device suitable for offshore wind power projects,its working mode and switching strategy are analyzed.Secondly,the scope and zoning of large-scale offshore wind power DC protection with a DC chopper are studied.The DC protection action strategy is determined,and each DC protection zone is focused on the protection configuration strategy.Then the influence of the switching on and off of the DC chopper on the DC protection function is studied.The focus is on the coordination strategy of DC overvoltage protection setting and the input voltage value of the chopper,and its protection function design.Finally,the above strategy is verified by simulation.

关 键 词：直流耗能装置 投退策略 保护配置策略 配合策略 

分 类 号：TM614[电气工程—电力系统及自动化]