基于N-R法的农村配电网潮流计算分析

Analysis on Distribution Grid Flow Calculation of Agricultural Areas Based on N-R Method

针对青海省黄化地区供电能力薄弱,低电压问题突出的现象,本文通过潮流计算分析,寻找可能的低电压区域,并提出具体的治理措施.基于N-R法进行潮流计算,采用MATLAB/Simulink分别对典型10kV线路和0.4kV线路进行建模分析.仿真计算结果表明,10kV及其上网络未出现低电压现象,因此判定低电压区域在0.4kV的配电网络上.通过对典型线路用户负荷的随机模拟和试验,并搭建相应的仿真模型,找出了低电压产生的原因,并提出了可行的治理方案.

Aiming at the weak power supply capabilities and low voltage phenomenon occurs during peak loads in agriculture areas in Huanghua Qinhai, based on Newton-Ralph method, this paper implements modeling and simulation on typical 10kV lines and 0.4 kV lines applying MATLAB/Simulink. Simulation calculation results show that low-voltage area should be in 0.4 kV user circuits and could not occur in 10kV grids and the above. Further, through random simulation and trial on user loads and constructing corresponding simulation model, the reasons on low-voltage occurring are found and feasible control schemes are then proposed.