上市公司UDVR仿真建模分析

摘要

In this paper,a model based on uninterrupted dynamic voltage restorer(UDVR)is established to explore the effect of voltage compensation.When the electric power system works on normal condition,power grid parameters such as detected voltage is in the normal range,which cannot trigger the dynamic voltage restorer to compensate the voltage.When a voltage drop occurs in the power system,the rectifier circuit of the UDVR will work to stabilizethe voltage of capacitor.At the same time,the inverter on the other side of capacitor will generate compensated voltage rapidly and accurately.This paper researchesthe topological structure of the dynamic voltage restorer, and then analysis the operating principle and characteristics of the dynamic voltage restorer.Finally,the paper discusses the choice of parameters and the control strategy of the dynamic voltage restorer.%本文研究了一种可连续运行动态电压恢复器(uninterrupted dynamic voltage restorer,UDVR)。当电力系统正常运行的时候，系统所检测到的电流等电网参数处于正常范围内，其不会产生补偿电压。当电力系统发生电压跌落的时候，整流侧可以实现对于电容电压的稳定控制，而逆变侧可以对检测到的补偿电压进行相应的快速补偿。本文从UDVR的拓扑结构出发，分析了工作原理和特点。最后，讨论了其参数选择以及相关控制策略。