复系数滤波器锁相环电压暂降检测仿真研究  

Simulation Study on Voltage Sag Detection in Phase-Locked Loop of Complex Coefficient Filter

作　　者：顾思园 吴家祺 陈海宾 韩冬军 GU Si-yuan;WU Jia-qi;CHEN Hai-bin;HAN Dong-jun(State Grid Shanghai Municipal Electric Power Company,shanghai 200051;Yantai Dongfang Wisdom Electric Co.,Ltd.,Shandong 264003)

机构地区：[1]国网上海市电力公司,上海200051 [2]烟台东方威思顿电气有限公司,烟台264003

出　　处：《环境技术》2024年第8期125-131,共7页Environmental Technology

基　　金：国网上海市电力公司科技项目,项目编号:52094018002A。

摘　　要：在三相电力系统中,单相电压暂降问题已经成为影响电力设备正常运行的最大隐患。本文针对传统单相电压暂降检测方法计算量大、动态性能差、检测精度较低的问题,提出一种基于复系数滤波器锁相环的电压暂降检测改进算法,通过引入相移算子,实现交叉去耦,极大地减小了检测计算量,提高了算法的动态性能和检测精度,特别适用于电压暂降的快速实时补偿,具有较大的实际工程应用价值。Matlab/Simulink仿真结果表明所提出的方法能快速精确地检测暂降深度,准确性与实时性满足电压暂降实时检测的需求。In three-phase power systems,the single-phase voltage drop problem has become the biggest hidden danger affecting the normal operation of power equipment.In this paper,for the traditional single-phase voltage dips detection method with large computation volume,poor dynamic performance and low detection accuracy,we propose an improved voltage dips detection algorithm based on complex coefficients filter phase-locked loop,which realizes the cross-decoupling through the introduction of phase-shift operator,greatly reduces the computation volume of the detection,improves the dynamic performance of the algorithm and the detection accuracy,and is particularly suitable for the rapid real-time compensation of voltage dips,which has a large practical engineering application value.Matlab/Simulink simulation results show that the proposed method can quickly and accurately detect the depth of transient drop,and the accuracy and real-time performance meet the demand of real-time voltage drop detection.

关 键 词：电能计量系统 动态电压恢复器 复系数滤波器 电压暂降检测法 

分 类 号：TM933[电气工程—电力电子与电力传动]