含微网的配电网电压暂降检测算法仿真  

Simulation of Voltage Sag Detection Algorithms for Distribution Network with Microgrid

作　　者：何娟 刘晓波[1] 袁旭峰[1] 张明浩 李堃 HE Juan;LIU Xiaobo;YUAN Xufeng;ZHANG Minghao;LI Kun(College of Electrical Engineering, Guizhou University, Guiyang 550025, China)

机构地区：[1]贵州大学电气工程学院,贵州贵阳550025

出　　处：《智慧电力》2019年第2期15-21,74,共8页Smart Power

基　　金：国家自然科学基金资助项目(51667007);南方电网有限责任公司重点科技项目(GZKJQQ00000417)~~

摘　　要：配电网电能质量问题是目前电力系统面临的关键问题之一,其中电压暂降对用户和设备的影响最为严重。在分析延时90°法、求导法、延时小角度法以及变步长差分法原理的基础上,基于Matlab/simulink仿真平台,搭建含微网的配电网电压暂降检测模型,对4种算法的检测特性进行仿真比较,同时对比分析了其在微网退出运行时的检测特性。结果表明,4种算法均能对电压暂降进行检测,其中求导法检测响应速度快,而变步长差分法抗干扰能力强。为4种算法投入实际应用提供了实验依据,同时对含微网的配电网优选何种检测算法具有一定的参考价值。The power quality of distribution network is one of the key problems in power system, among which the voltage sag has the most serious impact on users and equipments. After analyzing the methods including delaying 90°, derivation, delaying a small angle and utilizing variable-step difference, the paper establishes the voltage sag detection model for the distribution network with micgrogrid based on Matlab / Simulink simulation platform, makes detection performance comparison among the four algorithms mentioned above. The results show that the voltage sag can be detected by using one of four algorithms;the derivation method is of a fast response speed while the method of utilizing variable-step difference has strong anti-interference ability. It provides experimental basis for the practical application of the four algorithms, creating a reference value for selecting the detection algorithm for the distribution network with microgrid.

关 键 词：电压暂降 ΑΒ变换 抗干扰能力 含微网配电网 检测特性 

分 类 号：TM774[电气工程—电力系统及自动化]