Optimal combinations of utility level renewable generators for a net zero energy microgrid considering different utility charge rates

Evan S. Jones, Huangjie Gong, Dan M. Ionel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

15 Scopus citations

Abstract

High initial investment and the intermittent nature of resources are major challenges for large scale renewable generation. The size of photovoltaic (PV) and wind turbine (WT) farms in the microgrid needs optimized to avoid curtailment and to efficiently meet the demand of a power system. Battery energy storage systems (BESSs) may also be used to improve flexibility. This paper explores the optimal sizing for PV and wind generators, as well as a BESS at the utility level for a large grid-connected net zero energy (NZE) hybrid microgrid considering characteristics such as initial investment, levelized cost of energy (LCOE), operating costs, net present cost (NPC), and renewable fraction. Multi-objective formal optimizations were formulated as single objective problems with constraints and solved using the HOMER Pro computational engine. Ten optimizations with different utility charge rates are performed using actual data for the load profile, weather, and utility buy-back rates of Glasgow, KY. Simulation results demonstrated that various utility charge rates result in different optimal sizes for the solar PV and the WT farms, as well as for the BESS capacity.

Original languageEnglish
Title of host publication8th International Conference on Renewable Energy Research and Applications, ICRERA 2019
Pages1014-1017
Number of pages4
ISBN (Electronic)9781728135878
DOIs
StatePublished - Nov 2019
Event8th International Conference on Renewable Energy Research and Applications, ICRERA 2019 - Brasov, Romania
Duration: Nov 3 2019Nov 6 2019

Publication series

Name8th International Conference on Renewable Energy Research and Applications, ICRERA 2019

Conference

Conference8th International Conference on Renewable Energy Research and Applications, ICRERA 2019
Country/TerritoryRomania
CityBrasov
Period11/3/1911/6/19

Bibliographical note

Funding Information:
ACKNOWLEDGMENT The direct support of the Schneider Electric Corporation and the University of Kentucky Department of Electrical and Computer Engineering Undergraduate Research Fellowship Program is gratefully acknowledged.

Publisher Copyright:
© 2019 IEEE.

Keywords

  • Battery Energy Storage System
  • HOMER
  • Microgrid
  • Net Zero Energy
  • Renewable Energy

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering

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