Electric Power ›› 2015, Vol. 48 ›› Issue (6): 118-123.DOI: 10.11930/j.issn.10.11930.2015.6.118

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Research of Associated Zone Protection for Microgrid Based on IED Technology

TANG Bo, LI Yu, PENG Youxian, CAO Hongying, CHEN Bin   

  1. College of Electronic Engineering & New Energy, China Three Gorges University, Yi Chang 443002, China
  • Received:2014-10-24 Online:2015-11-26 Published:2015-06-25
  • Contact: 湖北省自然科学基金资助项目(2012FFB03701);宜昌供电公司科技资助项目(SDHZ20130336)

Abstract: The method of associated zone protection for Microgrid based on Intelligent Electric Device(IED) is proposed to solve the problems of relay protection setting and insufficient selectivity in microgrid protection. According to the division theory of 5 zones of microgrid, the concept of regional attribute is defined, and then 5 zones partition of microgrid could be defined clearly based on IED. The corresponding fault judgment theories and methods of each protection zone are formulated. Therefore, the associated zone protection program and IED protection process for microgrid are determined by protection strategy of distributed decision type. At last, the validity of proposed protection method is verified through PSCAD/EMTDC simulation.

Key words: microgrid protection, IED, regional attribute, fault judgment, associated zone, protection strategy

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