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

Chang Koo Lee, Byeong Gwan Bhang, David Kwangsoon Kim, Sang Hun Lee, Hae Lim Cha and Hyung Keun Ahn
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Chang Koo Lee: Energy Technology Demonstration Division, Korea Institute of Energy Technology Evaluation and Planning, 114 Gil, 14 Teheran, Gangnam, Seoul 06175, Korea
Byeong Gwan Bhang: Department of Electrical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul 05029, Korea
David Kwangsoon Kim: Department of Electrical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul 05029, Korea
Sang Hun Lee: Energy Technology Demonstration Division, Korea Institute of Energy Technology Evaluation and Planning, 114 Gil, 14 Teheran, Gangnam, Seoul 06175, Korea
Hae Lim Cha: Department of Electrical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul 05029, Korea
Hyung Keun Ahn: Department of Electrical Engineering, Konkuk University, 120 Neungdong, Gwangjin, Seoul 05029, Korea

Energies, 2018, vol. 11, issue 8, 1-16

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.

Keywords: microgrid; renewable energy resources; load pattern estimation; energy storage system (ESS); optimal planning, zero energy network (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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