NDLI: Coordinated voltage/var control in a hybrid AC/DC distribution network

Content Provider	IET Digital Library
Author	Qiao, Feng Ma, Jin
Abstract	A hybrid AC/DC distribution network (HDN) is formed after multiple hybrid AC/DC microgrids (MGs) and distributed generators (DGs) are integrated into the distribution network. Voltage/var control (VVC) in this evolved system constitutes a big challenge to system operators as a large variety of voltage control devices with quite different control characteristics are expected to be co-managed. This study proposes a coordinated VVC scheme to regulate voltage in an HDN by integrating power management model of hybrid AC/DC MGs into HDN's VVC model. The devices at HDN's level and those in MGs are allocated into two different models, and two models are linked via an approach called mathematical programmes with equilibrium constraints to achieve system-wide coordination. In the proposed VVC, mechanical devices such on-load-tap changer (OLTC) and shunt capacitor (SC) are scheduled every 2 h to save their lifetime, while the electronically interfaced DGs and MGs are scheduled every 30 min to leverage their fast power support. Case studies on a modified IEEE 33 nodes distribution system validate that the proposed VVC can effectively coordinate MGs' power support with OLTC, SCs, and DGs, and it constitutes significant improvements on power loss reduction and voltage quality compared with traditional VVC.
Starting Page	2129
Ending Page	2137
Page Count	9
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 11, Jun (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2019.0390
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-02-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Control of Electric Power System Coordinated VVC Scheme Different Control Characteristic Distributed Generator Distributed Power Generation Distribution Network HDN's VVC Model Modified IEEE 33 Node Distribution System Validate On Load Tap Changers Optimisation Technique Power Distribution Control Power Distribution Reliability Power Generation Control Power Management Model Power System Control Reliability System-wide Coordination Time 2.0 Hour Time 30.0 Min Voltage Control Voltage Control Device Voltage Regulators
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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