基于Qf0×Cnorm坐标系的AFD法盲区分析  

ANALYSIS FOR NON-DETECTION ZONE OF ACTIVE FREQUENCY DRIFT BASED ON Q×C COORDINATE SYSTEM

作　　者：李志军[1] 孙乐[1] 徐铎 王亚楠 张鸿鹏 安平 Li Zhijun;Sun Le;Xu Duo;Wang Ya’nan;Zhang Hongpeng;An Ping(College of Control Science and Engineering,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]河北工业大学控制科学与工程学院,天津300130

出　　处：《太阳能学报》2020年第9期191-197,共7页Acta Energiae Solaris Sinica

基　　金：河北省科技支撑计划(15212105D)。

摘　　要：孤岛检测盲区通常用来评价孤岛检测算法的优劣,准确合理的描述孤岛检测盲区可有效地反映孤岛检测方法的应用范围。不同的负载需要不同的算法进行相应检测,然而负载的多样性使得盲区描述变得困难。针对这一问题,该文首先对孤岛检测方法检测盲区及其特点进行介绍,在此基础上利用Qf0×Cnorm坐标系对主动移频式孤岛检测法的盲区进行理论分析,并进行仿真实验验证。该坐标系以负载品质因数和负载标注化电容为横纵坐标,适用于主被动孤岛检测,克服传统孤岛检测盲区图不能直观反映负载与盲区的对应问题。理论分析和仿真结果表明,该坐标系在实际应用中能够有效地反映出孤岛检测算法的盲区分布范围。NDZ of islanding detection is usually used to evaluate the advantages and disadvantages of the islanding detection algorithm.Accurate and reasonable description of NDZ can effectively reflect the application scope of the islanding detection method.Different loads require different algorithms for corresponding detection,and the diversity of loads makes the description of NDZ difficult.In order to solve this problem,this paper firstly introduces NDZ of islanding detection and its characteristics.Based on this,the Qf0×Cnorm coordinate system is used to analyze NDZ of the active islanding detection method,and then to verify the analysis result by simulation experiments.This coordinate system uses the load quality factor and the load labeled capacitance as the horizontal and vertical coordinates,which is suitable for both active and passive island detection and overcomes the problem that the traditional NDZ cannot directly reflect the corresponding problem of loads and NDZ.The theoretical analysis and simulation results show that the coordinate system can effectively reflect the distribution of the NDZ of islanding detection algorithm in practical applications.

关 键 词：孤岛检测 并网光伏系统 主动移频 检测盲区 Qf0×Cnorm坐标系 

分 类 号：TM615[电气工程—电力系统及自动化]