NDLI: Methods and strategies for overvoltage prevention in low voltage distribution systems with PV

Content Provider	IET Digital Library
Author	Hashemi, Seyedmostafa Østergaard, Jacob
Abstract	The rapid development of photovoltaic (PV) systems in electrical grids brings new challenges in the control and operation of power systems. A considerable share of already installed PV units is small-scale units, usually connected to low-voltage (LV) distribution systems that were not designed to handle a high share of PV power. This study provides an in-depth review of methods and strategies proposed to prevent overvoltage in LV grids with PV and discusses the effectiveness, advantages, and disadvantages of them in detail. On the basis of the mathematical framework presented in this study, the overvoltage caused by high PV penetration is described, solutions to facilitate higher PV penetration are classified, and their effectiveness, advantages, and disadvantages are illustrated. The investigated solutions include the grid reinforcement, electrical energy storage application, reactive power absorption by PV inverters, application of active medium-voltage to LV transformers, active power curtailment, and demand response. Coordination between voltage control units by localised, distributed, and centralised voltage control methods is compared using the voltage sensitivity analysis. On the basis of the analysis, a combination of overvoltage prevention methods and coordination between voltage control units can provide an efficient solution to increase the PV hosting capacity of LV grids.
Starting Page	205
Ending Page	214
Page Count	10
ISSN	17521416
Volume Number	11
e-ISSN	17521424
Issue Number	Issue 2, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2016.0277
Journal	IET Renewable Power Generation
Publisher Date	2016-11-25
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Curtailment Centralised Control Centralised Voltage Control Method Control of Electric Power System Demand Response Distributed Control Distributed Voltage Control Method Distribution Network Electrical Energy Storage Application Electrical Grid Grid Reinforcement Low-voltage Distribution System LV Distribution System LV Grid LV Transformer Multivariable Control System Overvoltage Prevention Method Overvoltage Protection Photovoltaic Power System Photovoltaic System Power Distribution Protection Power Grid Power System Control Power System Protection Power Transformer PV Inverter PV Penetration PV Power PV System PV Units Reactive Power Reactive Power Absorption Sensitivity Analysis Solar Power Stations Voltage Control Voltage Sensitivity Analysis
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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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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