摘要
观音岩电站送出直流工程是南方电网异步联网工程的重要组成部分。相对于其他直流工程,该直流的特点主要有:1送受端换流站可能存在的运行方式较多;2受端换流站送出线路加装串补,且最终串补度尚未确定。针对观音岩电站送出直流工程的特点,采用NIMSCAN程序对该直流工程送受端换流站的系统谐波阻抗特性进行了研究。对于送端换流站,比较了联网运行方式和孤岛运行方式下的系统等值谐波阻抗特性;对于受端换流站,按照送电方向的不同对系统的谐波阻抗进行分别计算。最后,分析了换流站出线串补的串补度变化对系统谐波阻抗参数的影响。
Guanyinyan HVDC project is an important part of asynchronous interconnection project in Southern Power Grid . Compared to other HVDC projects , this project has more operation modes and the lines of inverter station connected to the sys -tem contain the series compensation whose value is still in studying .Based on the characteristics of this project , the equivalent harmonic impedances of rectifier station and inverter station are studied with NIMSCAN program .For the rectifier station , the characteristics of equivalent harmonic impedance of power system under grid -connected operation mode and island operation mode are compared .For the inverter station , the harmonic impedance of system is separately calculated according to the differ -ent transmission directions .In the end, the influence of the series compensation degree on harmonic impedance parameters is analyzed .
出处
《四川电力技术》
2014年第4期53-57,69,共6页
Sichuan Electric Power Technology
关键词
谐波阻抗
电力系统等值
观音岩电站
串补度
harmonic impedance power system equivalent Guanyinyan station series compensation degree
