A Hybrid Islanding Detection Method For Distribution Systems
DOI:
https://doi.org/10.13052/dgaej2156-3306.3343Keywords:
Islanding detection, communication method, distributed generation, distribution system, hybrid method, micro grid, passive methods.Abstract
Continuous operation of Renewable Energy Systems (RES) is
achieved either in grid-connected mode or in autonomous mode in the
form of Islands or Microgrid, which has predefined boundaries. Thus,
distribution systems should be capable of detecting islanding condi -
tion for smooth transition to an Islanded mode. In this article, a hybrid
islanding detection method, which combines remote and passive meth -
ods, is proposed. Distributed Generation (DG) units can be in the form
of inverter interfaced or synchronous based generators and when used
together can cause difficulti¥es in islanding detection such as delay or
inaccurate detection. The number of DG units in the network also affects
the accuracy of islanding detection. Thus a new hybrid method, which is
based on communication and passive methods, is proposed to overcome
this problem. The accuracy and effectiveness of the proposed hybrid
method is investigated using PSCAD software. The proposed detection
method features an improvement in detection accuracy.
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