Novel Islanding Detection Method for Distributed Generation

被引:0
作者
Lee, Hye Yeon [1 ]
Han, Byung Moon [1 ]
Cha, Han Ju [2 ]
机构
[1] Myongji Univ, San 38-2 Namdong Yongin, Gyeonggido, South Korea
[2] Chungnam Natl Univ, Daejeon, South Korea
来源
2009 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION, VOLS 1-6 | 2009年
关键词
Inverter-Based DG (Distributed Generation); Islanding detection; Active Method; Reactive Current Injection; Cross-correlation; DSP (Digital Signal Processor); NDZ (Non-Detection Zone);
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper describes the development of a novel islanding detection method for inverter-based distributed generation, which uses the signal cross-correlation scheme between the injected reactive current and the power frequency deviation. The existing method injects the 5% reactive current to the rated current for detecting the frequency deviation, which brings about reduction of power quality. On the contrary, the proposed method injects the 1% reactive current to the rated current which brings about negligible degradation of power quality. The proposed method detects the islanding state by calculating the cross-correlation index between the injected reactive current and the frequency deviation. The operational feasibility was verified through computer simulations with PSCAD/EMTDC software and experimental works with a 3kVA hardware prototype. The proposed method can detect the islanding state effectively without degrading the power quality at the point of common connection point.
引用
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页码:3257 / +
页数:3
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