NDLI: Tools for handling steady-state under-frequency regulation in isolated microgrids

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Tools for handling steady-state under-frequency regulation in isolated microgrids

Volume 13 (2019) : Issue 3, Feb

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Volume 13 (2019) : Issue 1, Jan

IET Science, Measurement & Technology

IET Signal Processing

IET Wireless Sensor Systems

Micro & Nano Letters

The Journal of Engineering

Tools for handling steady-state under-frequency regulation in isolated microgrids

Content Provider	IET Digital Library
Author	Gatta, Paula Oliveira La Filho, João Alberto Passos Pereira, José Luiz Rezende
Abstract	This study presents two approaches to handling under-frequency regulation in isolated microgrids. The first one is a governor power flow (PF) model in which the generators steady-state governor equations are modeled into a full Newton PF formulation resulting in an augmented sparse linearised system of equations to be solved at each iteration. As a result, it is possible to evaluate the under frequency problem in the case of microgrid islanding as well as to set the reference bus angle to evaluate the possibility of reconnection to the main grid. The second approach presents an optimal PF (OPF) formulation in which the generators governor equations are considered as additional equality constraints to determine the minimum amount of load shedding to keep the system frequency between specified limits. In both methods, it is also used an equation that provides voltage regulation in a droop-based control. The reactive power generation limits in the OPF approach are bounded by a proposed complementarity constraint-based method adapted for the generators' droop-controlled terminal voltage. The proposed approaches are evaluated and validated through the study of the EHV1 Network, a 61-bus 33/11-kV radial distribution system, and the New England test system.
Starting Page	609
Ending Page	617
Page Count	9
ISSN	17521416
Volume Number	13
e-ISSN	17521424
Issue Number	Issue 4, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5172
Journal	IET Renewable Power Generation
Publisher Date	2019-01-04
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	33/11-kV Radial Distribution System Complementarity Constraint-based Method Control of Electric Power System Distributed Power Generation Droop-based Control Droop-controlled Voltage Equality Constraint Generator Governor Equation Generator Steady-state Governor Equation Governor Power Flow Model Inequality Constraint Interpolation And Function Approximation Isolated Microgrid Load Flow Load Shedding Microgrid Isolation New England Test System Newton Method Newton PF Formulation Numerical Analysis OPF Approach Optimal PF Formulation Optimisation Power And Energy Control Power Generation Control Power System Economics Power System Managemen Power System Operation Power System Transient Stability Reactive Power Control Reactive Power Generation Limits Reference Bus Angle System Frequency Under-frequency Problem Under-frequency Regulation Voltage Control Voltage Regulation
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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