Power Quality Survey in a State of the Art Microgrid H. Kirkeby and O. Johansson   2019/07/15

Abstract

The power quality in a state of the art microgrid has been examined using power quality analysers from Elspec Ltd and A-Eberle GmbH. The microgrid employs PV, CHP and three battery banks with a total of 120 kW / 204 kWh dividing the microgrid into three subnetworks with different network topologies.
Different power quality measurements during different stages of construction shows that there are some power quality issues in the microgrid. These issues relate to transitioning to island mode, increase of harmonic noise during island mode, and undesirable equipment interactions. These are increasingly important issues to address as microgrids are becoming more widely adopted and increasingly complex.

Authors and affiliations

H. Kirkeby1 and O. Johansson2
1. PQA AS. Skippergata, Oslo (Norway)
2. Sivilingeniør Carl Christian Strømberg AS. Fredrikstad (Norway)

Key words

Microgrid, Power Quality, Islanding detection, Control.

References

[1] Navigant Research, “Market Data: Microgrids, Annual Capacity and Implementation Spending by Geographic Region, Market Segment, and Business Mode”, 2018.
[2] Y. Yoldaº, A. Önen, S.M.Muyeen, A.V.Vasilakos. I. Alan, “Enhancing smart grid with microgrids: Challenges and opportunities”, in Renewable and Sustainable Energy Reviews, 2017, Vol. 72, p. 205-214.
[3] Schneider Electric, “D7.1: Pilot Sites Specification Report”, version 2, EMPOWER H2020-project, 2016.
[4] CLC/SC205A, “Study Report on Electromagnetic interference between Electrical Equipment/Systems in the Frequency Range below 150 kHz”, CENELEC, Edition 3, 2015.