考虑充电随机性的电动汽车充电站谐波分析

Harmonic Analysis of Electric Vehicle Charging Station Considering Charging Randomness

提出一种考虑充电机工作随机性的状态概率模型,采用蒙特卡罗模拟充电过程中可能的影响因素,分析计算过程中每个状态下充电站的谐波含量,并进行统计给出充电站正常运营情况下各次谐波的概率分布。该方法同样适用于其他多个非线性负荷集中上网的谐波特性分析和研究,具有普适性和通用性。谐波分析结果可指导谐波治理装置的配置和电能质量优化的策略安排。

A state probability model that considers the randomness of the charger's work is proposed.Monte Carlo is used to simulate the possible influencing factors in the charging process.The harmonic content of each state in the calculation process is analyzed,and the probability distribution of each harmonic in the normal operation of the charging station is given.This method is also suitable for the analysis and research of harmonic characteristics of other nonlinear load centralized network,and has universality and universality.The results of harmonic analysis can guide the configuration of harmonic control devices and the strategy arrangement of power quality optimization.