农网长距离线路应用串补技术的理论研究与仿真

众所周知,引起线路电压的损失主要由两部分组成:一是线路电阻引起的电压损失;二是线路电抗引起的电压损失。目前,由于农网很多线路送电距离长、导线截面大等原因,导线的电抗远大于线路电阻。因此,研究降低线路电抗上的压降损耗是当前关注的热门课题。为此,针对某农网66kV系统存在因线路长、电抗大而造成沿线各负荷点电压水平低、沿线线路损耗大等问题,对其采用串联补偿技术进行了探讨。经理论分析与软件仿真,证明了该技术用于农网长距离线路改善电压质量的可行性,为提高电能质量、降低线路损耗和保证农网的安全稳定运行提出了一个新的思路。

Theoretical Research and Simulation of Applying Series Compensation Technology of Long-distance Lines in Rural Electric Network

As known to all,two major parts will lead to circuitous voltage loss,one is the line resistance,the other is the line reactance.At present,due to many lines of rural electric network with long distance transmission and big wire section,wire reactance is much bigger than the line resistance.Therefore,the research on the lower voltage drop loss of line reactance is present hot topic.Some rural electric network 66kV system has some problems such as the levels of voltage along the loads are low and the loss along the line is big due to the long distance and the huge reactance,aiming at the problems,discusses of applying series compensation technology are made in the paper.Through the theoretical analysis and simulation,the feasibility of the technology of improving the voltage quality of long-distance lines in rural electric network is proved.To improve power quality,reduce the line loss,ensure the safe and stable operation of rural electric network,a new thought is put forward.