基于综合能量最优补偿的动态电压恢复器

为实现动态电压恢复器(DVR)对暂降电压幅值和相位补偿的同时,减少能量的损耗,延长补偿时间,最大程度减小暂降电压对负载的影响,文中提出了一种综合能量最优补偿策略。通过分析综合能量最优补偿过程,得出补偿相量图和解析式,并讨论了该策略的极限补偿问题。分析补偿电压幅值、输出有功与相关物理量之间的数学关系式和关联曲线,得出最优补偿条件。通过MATLAB/Simulink进行仿真实验,分析了不同程度的电压暂降补偿效果,仿真结果验证了所提补偿策略的有效性。

Dynamic Voltage Restorer Based on Integrated Energy Optimal Compensation

In order to achieve dynamic voltage restorer(DVR)compensation for amplitude and phase of the sag voltage,reduce energy loss and extend compensation time to minimize the impact of sag voltage on the load.A comprehensive energy optimal compensation strategy is proposed in this paper.Firstly,the process of integrated energy optimal compensation is analyzed.The compensation phasor diagram and analytical formula are obtained,and the limit compensation problem of the strategy is discussed.Secondly,the mathematical relationship and correlation curve between the compensation voltage,the output active power and the relevant physical quantities are analyzed to obtain the optimal compensation conditions.Finally,MATLAB/Simulink simulation experiments is performed to analyze the compensation effect of different voltage sags.The simulation results verify the effectiveness of the proposed compensation strategy.