四川电力技术
四川電力技術
사천전력기술
SICHUAN ELECTRIC POWER TECHNOLOGY
2014年
6期
69-72
,共4页
分布式发电%逆变器%孤岛%不可检测区%特征识别%诊断
分佈式髮電%逆變器%孤島%不可檢測區%特徵識彆%診斷
분포식발전%역변기%고도%불가검측구%특정식별%진단
distributed generation%inverter%island%non-detection zone%feature identification%diagnosis
孤岛效应是分布式发电中较为重要的问题。现有的孤岛检测方法通常分为三类：即有源孤岛检测方法、无源孤岛检测方法和基于通信的孤岛检测方法。重点研究了OVP／UVP方法，并通过修正分布式电源DG的P－V特性斜率来改进了OVP／UVP方法，修正其斜率为正能有效地减小不可检测区，修正其斜率为负将增大其不可检测区。
孤島效應是分佈式髮電中較為重要的問題。現有的孤島檢測方法通常分為三類：即有源孤島檢測方法、無源孤島檢測方法和基于通信的孤島檢測方法。重點研究瞭OVP／UVP方法，併通過脩正分佈式電源DG的P－V特性斜率來改進瞭OVP／UVP方法，脩正其斜率為正能有效地減小不可檢測區，脩正其斜率為負將增大其不可檢測區。
고도효응시분포식발전중교위중요적문제。현유적고도검측방법통상분위삼류：즉유원고도검측방법、무원고도검측방법화기우통신적고도검측방법。중점연구료OVP／UVP방법，병통과수정분포식전원DG적P－V특성사솔래개진료OVP／UVP방법，수정기사솔위정능유효지감소불가검측구，수정기사솔위부장증대기불가검측구。
Islanding is a relatively important problem in distributed generation.The existing islanding detection methods are u-sually divided into three kinds, namely active islanding detection method, passive islanding detection method and islanding de-tection method based on communication.The OVP/UVP method is mainly studied and it is improved through correcting the slope of P-V characteristics in distributed generation ( DG) .It can effectively decrease the non-detection zones by amen-ding the slope to be positive, and it can increase its non-detection zones by amending the slope to be negative.
