A Protection Strategy and Microprocessor-Based Relay for Low-Voltage Microgrids

被引：228

作者：

Zamani, M. Amin ^{[1
]}

Sidhu, Tarlochan S. ^{[1
]}

Yazdani, Amirnaser ^{[1
]}

机构：

[1] Univ Western Ontario, Dept Elect & Comp Engn, London, ON N6A 5B9, Canada

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2011年 / 26卷 / 03期

关键词：

Distributed generation; electronically coupled distributed generators; microgrid; microprocessor-based relays; power system protection; IMPEDANCE FAULT-DETECTION;

D O I：

10.1109/TPWRD.2011.2120628

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

One of the major challenges associated with microgrid protection is to devise an appropriate protection strategy that is effective in the grid-connected as well as islanded mode of operation. This paper proposes a protection strategy based on microprocessor-based relays for low-voltage microgrids. Further, the structure of a new relay enabling the proposed protection strategy is presented. One of the salient feature of the developed protection scheme is that it does not require communications or adaptive protective devices. Moreover, it is to a large extent independent of the fault current magnitude and the mode of operation. Transient time-domain simulation studies are conducted to demonstrate the effectiveness of the proposed protection strategy and its enabling relay, using the PSCAD/EMTDC software package.

引用

页码：1873 / 1883

页数：11

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