电压暂降影响因素和基于DVR的治理方法研究

Research on Influential Factors of Voltage Sage and Suppression Methods Based on DVR

电压暂降对于电子类设备和由新型电子类设备控制的传统工业过程具有较大影响,短时断电会造成设备长时间关断,造成较大的经济损失。为降低电压暂降的危害,以宝应工业园区为基础,建立Matlab/Simulink仿真模型,分析不同故障类型、故障位置和故障切除时间对电压暂降的影响,对比中性点不同接地方式对电压暂降的影响,建立动态电压恢复器(Dynamic Voltage Restorer, DVR)的仿真模型,并应用于发生电压暂降的仿真系统,证明动态电压恢复器对于电压暂降具有良好的抑制作用。

The voltage sage has a great influence on electronic equipments and traditional industry con-trolled by electronic equipments. The short-term fault of electronic equipments would cause the long-term disconnect of traditional equipments, which results in considerable economic losses. Actions are taken to reduce the risk brought by the voltage sage. The simulation model is built in Matlab/Simulink according to the power system of Baoying Industrial Park. The effects of differ-ent fault types, fault positions, fault clearing time, and different grounding methods are analyzed. The simulation model of DVR is established and applied to the simulation system, which certifies DVR inhibition on the voltage sage.