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Energies 2018, 11(8), 2012; https://doi.org/10.3390/en11082012

Estimation of Load Pattern for Optimal Planning of Stand-Alone Microgrid Networks

1
Energy Technology Demonstration Division, Korea Institute of Energy Technology Evaluation and Planning, 114 Gil, 14 Teheran, Gangnam, Seoul 06175, Korea
2
Department of Electrical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul 05029, Korea
*
Author to whom correspondence should be addressed.
Received: 17 July 2018 / Revised: 30 July 2018 / Accepted: 1 August 2018 / Published: 2 August 2018
(This article belongs to the Section Sustainable Energy)
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Abstract

This paper proposes a method for estimating the load pattern for optimal planning of stand-alone renewable microgrids and verifies when the basic data for microgrid design are limited. To estimate a proper load pattern for optimal microgrid design when the data obtained in advance are insufficient, the least squares method is used to compare the similarity of annual power consumption between the subject area and eight islands in Korea whose actual load patterns were previously obtained. Similarity is compared in terms of annual (every month), seasonal, bi-monthly, and monthly averages. To verify the validity of the proposed estimation method, the applied proposed estimation method is used for two islands that have already installed a microgrid consisting of photovoltaic, wind power, energy storage systems, and diesel generators. In comparing the actual data from the two islands, the costs of electricity in terms of microgrid operations show improvements of 37.2% and 29.8%, respectively. View Full-Text
Keywords: microgrid; renewable energy resources; load pattern estimation; energy storage system (ESS); optimal planning, zero energy network microgrid; renewable energy resources; load pattern estimation; energy storage system (ESS); optimal planning, zero energy network
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Lee, C.K.; Bhang, B.G.; Kim, D.K.; Lee, S.H.; Cha, H.L.; Ahn, H.K. Estimation of Load Pattern for Optimal Planning of Stand-Alone Microgrid Networks. Energies 2018, 11, 2012.

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