Assessment of Distributed Harmonic Filters on Grid Voltage Quality

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Paper number
2052
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Singh, Gaurav, EPRI, USA
Miller, Carl , Electric Power Research Institute, USA
Howe, William, Electric Power Research Institute, USA
Abstract
Proliferation of power electronic circuits (particularly in industrial settings) and inverter interfaced DER, may lead to an increase in the amount of harmonic loading on the circuit. This harmonic loading affects the power quality (PQ) of the feeder and can have an impact on the reliability of capacitor banks, which can act as sinks for these harmonic frequencies and increase chances of resonances. There is a temptation to deploy harmonic filters to alleviate this problem. However, there is a lack of understanding about how such distributed filters might impact the power grid. This paper proposes a method in which harmonic problems commonly associated with inverter based DER, may be solved at the planning stage by replacing capacitor banks on a feeder by equivalent harmonic filters tuned to a specific frequency or frequencies. A medium voltage (MV) filter design spreadsheet was developed to determine the feasibility of a standardized harmonic filter that may be deployed anywhere on the MV distribution system as a replacement to existing capacitor banks. With filters deployed in place of existing capacitor banks, various scenarios were considered to determine impacts on power system harmonics and voltage profiles.
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
Permanent link to this record
https://cired-repository.org/handle/20.500.12455/709
http://dx.doi.org/10.34890/934
ISSN
2032-9644
ISBN
978-2-9602415-0-1