一种DVR叠加控制和纠频校准的电压暂降补偿方法
A Voltage Sag Compensation Method Based on DVR Superposition Control and Frequency Correction Calibration
邵海1
作者信息
- 1. 珠海万力达电气自动化有限公司,广东 珠海 519085;广东省企业供配电系统电压暂降工程技术研究中心,广东 珠海 519085
- 折叠
摘要
传统DVR补偿控制容易引入计算偏差和高频干扰.文章基于直流量的双侧双环叠加的电压暂降补偿控制方法对传统交流量PI控制器进行改进,提出DVR耦合元件源侧和输出侧构成双侧反馈,提高了控制效果,在传统正弦波正向过零相位跟踪方法的基础上,提出了双向过零相位跟踪方法,解决了控制系统无法捕捉正弦波过零后相位跳变的问题.通过仿真和实验,验证了本文提出策略的有效性.
Abstract
Traditional DVR compensation control is prone to introduce calculation deviation and high-frequency interference.In this paper,traditional AC PI controller is improved based on voltage sag compensation control method of DC dual sides and dual loop superposition in which a dual feedback is formed on the source side and output side of the DVR coupling elements to improve the control effect.Based on traditional sine wave forward zero crossing phase tracking method,a bidirectional zero crossing phase tracking method is proposed to solve the problem that the control system is unable to capture the phase jump after sine wave zero crossing.Simulation and experiments have verified the effectiveness of the proposed method in this paper.
关键词
动态电压恢复器/直流量计算/双侧双环/电压暂降Key words
dynamic voltage restorer/DC calculation/dual side and dual loop/voltage sag引用本文复制引用
出版年
2024
NETL
NSTL
万方数据