提高农网长距离线路末端电压的研究——基于电容补偿

Study on Improving the Terminal Voltage of Long-distance Lines in Rural Electric Network with Capacitance Compensation

66kV线路是农村电网的骨干线路,线路较长,电抗较大,因而线路电压损失较大,使末端电压较低。为此,从应用电容补偿提高线路电压的原理入手,对分别应用串联补偿、并联补偿以及同时应用二者的补偿效果进行了比较,经理论分析与仿真,得出了相应的结论:应用串联补偿效果较理想;应用并联补偿效果不明显;同时应用两种补偿时,并联补偿对串联补偿有一定的抵消作用。

The line of 66kV is the major line of rural electric network,the long distance lines and the huge reactance lead to the big line voltage loss,so the terminal voltage is low.Aiming at the problems,compensation effects of series compensation,parallel compensation and both of them are compared in the paper,basing on the principle of improving line voltage using capacitor compensation.Through the theoretical analysis and simulation,corresponding conclusions are got.The effect of series compensation is ideal,that of parallel is not obvious,when the two are used simultaneously,parallel compensation can offset series compensation partly.