摘要
针对动态电压恢复器DVR(Dynamic Voltage Restorer)在分布式电网中进行电压暂降补偿时出现的延时和控制不稳定等问题,提出一种无串联变压器型DVR的预测电压控制策略,该方法在不需要线性控制器或调制技术下,通过DVR跟踪参考电压有效预测控制,保持负载电压在各种扰动下稳定输出正弦电压值。在DVR补偿控制策略方面,采用最小有功功率补偿控制策略,该方法更为有效地延长DVR补偿时间,降低DVR输出的有功功率,仿真与实验结果验证了所提方法的可行性。
According to the dynamic voltage restorer（ DVR） for voltage sag compensation in power grid and distributed delay controlling the instability problems,a transformerless DVR predictive voltage control strategy is proposed,this method does not need to be in the linear controller or modulation techniques,by tracking the reference voltage DVR effective predictive control,maintain the load voltage under various disturbances stable sinusoidal output voltage. In the aspect of DVR compensation control strategy,using the minimum active power compensation control strategy,this method is more effective to extend the DVR compensation time,reduce the active power output of DVR,simulation and experimental results verify the feasibility of the proposed method.
作者
史建平
杜立
SHI Jianping;DU Li(School of Electrical and Photoelectronic Engineering, Changzhou Institute of Technology, Changzhou Jiangsu 213022, China;Xiangyang Power Supply Company, Xiangyang Hubei 441000, China)
出处
《电子器件》
CAS
北大核心
2018年第3期631-637,共7页
Chinese Journal of Electron Devices
基金
江苏省科技计划项目(BY2016031-06)
关键词
动态电压恢复器
分布式电网
预测电压控制
参考电压
最小有功功率补偿
dynamic voltage restorer
distributed network
predictive voltage control
reference voltage
minimum active power compensation
