导线截面对农村线路杆上无功补偿需求的影响分析

Influence of Cross-Section of Conduction on Reactive Compensation Demand on Tower of Rural Line

农村配电线路普遍存在主干长、线径小、线路末端电压水平较低、无功需求较大等问题,杆上无功补偿方式适合于功率因数低且负荷较重的长距离配电线路。为了探究导线截面对线路杆上无功补偿的影响情况,在分析导线截面对线路电压和功率损耗的影响的理论基础上,通过建模并进行潮流仿真计算,分别针对主干线和分支线,对不同导线截面下架空线路的杆上无功补偿量及补偿效果进行对比,分析导线截面对农村线路杆上无功补偿的影响,得出农村长距离配电线路无功补偿的规划建议。

There are many problems in rural distribution lines, such as long main stem, small line diameter, low voltage level at the end of the line and large demand for reactive power. The reactive compensation on tower method is suitable for long lines with low power factor and heavy load. In order to investigate the influence of conductor cross section on the reactive compensation on tower, this paper analyzes the influence of wire cross section on line voltage and power loss. Besides, it compares the reactive power compensation and the compensatiou effect on tower of the overhead line under different wire cross section through the modeling and the power flow simulation calculation for the main line and the branch line. Also, this paper analyzes the influence of conductor cross section on reactive power compensation on rural line, and obtains the planning suggestion of reactive power compensation in rural long distance distribution line.