摘要
针对双换流器并联直流系统开展主回路参数设计与主接线结构研究,首先介绍了换流站内2组12脉动换流器并联的直流系统主要的运行与接线方式;然后根据直流输电基本理论并结合并联换流器自身特点,考虑控制方式的变化,开展直流主回路设计,对换流变压器、换流阀等主设备进行详细的参数计算;最后针对几类典型并联接线结构,从可靠性、占地面积、工程实施难度等方面综合比选,并结合换相失败故障工况下的仿真研究,最终给出推荐的换流站电气主接线方案。
The parameters design of main circuit and the structure study of main wiring were carried out aimed at DC system with 2 converters connected in parallel. Firstly, the main operation and connection schemes of DC system with two 12-pulse converters in parallel were introduced. Then, based on the basic theory of DC transmission and the characteristics of parallel converters, the DC main circuit was designed with considering the change of control mode, and the parameters of main devices such as converter transformers and converter valves, were calculated in detail. Finally, according to several typical parallel structures, the comparison of feasibility, floor space and difficulties in construction were carried out, and the recommended main electrical wiring scheme was proposed for converter station, combined with the simulation research under commutation failure condition.
出处
《电力建设》
北大核心
2015年第9期50-56,共7页
Electric Power Construction
基金
国家电网公司科技项目(SGCC[2013]199)
关键词
并联换流器
主回路
主接线
换流变压器
换流阀
换相失败
parallel converters
main circuit
main wiring
converter transformer
converter valve
commutation failure
