CAJ | 학술논문

防孤岛保护是并网发电系统的必备功能，目前的孤岛检测方法主要有电网侧检测、外部开关电容检测、逆变器侧检测3大类，其中逆变器侧检测又可分为被动检测和主动检测。阐述了孤岛效应产生的机理和检测盲区出现的原因，在此基础上，对孤岛检测方法进行分类，并重点介绍了基于逆变器侧的各种被动检测法、主动检测法的原理，分析了它们的特点和适用的场合，最后介绍了不同国家依据不同标准所采取的检测方法。研究结果表明每种检测方法各有优缺点，实际应用中，应将至少各一种主动检测法和被动检测法结合使用，以此获得更好的检测效果。
방고도보호시병망발전계통적필비공능，목전적고도검측방법주요유전망측검측、외부개관전용검측、역변기측검측3대류，기중역변기측검측우가분위피동검측화주동검측。천술료고도효응산생적궤리화검측맹구출현적원인，재차기출상，대고도검측방법진행분류，병중점개소료기우역변기측적각충피동검측법、주동검측법적원리，분석료타문적특점화괄용적장합，최후개소료불동국가의거불동표준소채취적검측방법。연구결과표명매충검측방법각유우결점，실제응용중，응장지소각일충주동검측법화피동검측법결합사용，이차획득경호적검측효과。
The protection against islanding is an essential function of connected‐grid system ,islanding detection can be divided into three categories of the grid side ,the external switches of capacitance and the inverter side ,and the methods of inverter side also contains two kinds of active and passive .This paper describes the mechanism for islanding and the reason of non‐detection zone ,on the basis of above ,islanding detection methods are classified ,introducing the principles of passive and active based on inverter side ,and their characteristics and applicable occasions are analyzed .Finally ,the detection methods based on different standards in different countries are presented .The results of the study show that every method has its advantages and disadvantages ,in actual application ,an active detection and a passive detection method should be used in combination at least ,in order to obtain better detection effect .