NDLI: Volt–var curves for photovoltaic inverters in distribution systems

Content Provider	IET Digital Library
Author	Connell, Alison O' Keane, Andrew
Abstract	Photovoltaics (PV) are a technology that is becoming increasingly prevalent in the residential sector. The impacts of this new type of generation are not always desirable from a distribution system standpoint, as large penetration levels can lead to voltage increases, considerable unbalance, and excessive tap operations. Recent standard changes have allowed the inverters that are used to grid connect PV systems, to utilise their reactive power capability for voltage regulation. Although this new capability is desirable, it is important to ensure that it is being applied in the most beneficial way. The work in this study makes use of a three-phase optimal power flow method to find optimal volt–var curves for grid-connected rooftop PV inverters, which can perform autonomous voltage control. A number of scenarios are applied to produce a sufficient range of voltages, and the resulting reactive power settings are utilised to determine the volt–var curve for each PV system on a test feeder. An active control scheme is also presented, and the results are compared with the proposed autonomous scheme for a test 24 h period.
Starting Page	730
Ending Page	739
Page Count	10
ISSN	17518687
Volume Number	11
e-ISSN	17518695
Issue Number	Issue 3, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.0409
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-02-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Control Scheme Autonomous Voltage Control Building Integrated Photovoltaics Control of Electric Power System Distribution Network Distribution System Grid Connect PV System Grid-connected Rooftop PV Inverter Invertors Load Flow Control Optimal Control Optimal Volt-var Curves Photovoltaic Inverter Photovoltaic Power System Power And Energy Control Power Distribution Control Power Grid Power System Control Reactive Power Capability Reactive Power Control Residential Sector Solar Cell And Array Solar Power Stations Three-phase Optimal Power Flow Method Voltage Control Voltage Regulation
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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