NDLI: Direct method for transient stability assessment of a single wind turbine generator subject to LVRT requirements

Content Provider	IET Digital Library
Author	Sohn, Alexandre Prodóssimo Abrantes, Adriano Lima Alberto, Luís Fernando Costa
Abstract	The authors report on a step towards the development of direct methods for transient stability assessment of power systems with integrated wind turbine generators subject to low voltage ride-through constraints. In this study, they propose an approach to assess transient stability of a single wind turbine generator against an infinite bus using an energy function along with an extension of the potential energy boundary surface method. The proposed approach exploits the theory of constrained dynamical systems and the concept of constrained stability region to efficiently estimate critical clearing times taking into account not only the issue of stability due to rotor acceleration but also the issue of operational limit violations, such as low-voltage ride-through curve violations. Very often, wind turbine generators are disconnected due to violation of operational limits, such as under-voltage limits, instead of rotor acceleration. The proposed approach correctly estimates the critical clearing times to avoid operational limit violations, such as the low-voltage ride-through constraint violation, while traditional direct methods would fail to appropriately estimate such clearing times. They illustrate the effectiveness of the proposed approach by means of case studies considering two types of wind turbine generators, the fixed- and limited-variable-speed wind turbine generators.
Starting Page	6195
Ending Page	6205
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 25, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.1313
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/25
Journal	IET Generation, Transmission & Distribution
Publisher Date	2020-11-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Constrained Dynamical System Constrained Stability Region Control of Electric Power System Critical Clearing Times Direct Method Energy Function Fixed- Speed Wind Turbine Generator Integrated Wind Turbine Generator Subject Limited-variable-speed Wind Turbine Generator Low Voltage Ride-through Constraint Low-voltage Ride-through Constraint Violation Low-voltage Ride-through Curve Violations LVRT Requirements Operational Limit Violations Operational Limits Potential Energy Boundary Surface Method Power Engineering Computing Power Grid Power System Power System Control Power System Transient Stability Rotor Acceleration Rotors Single Wind Turbine Generator Subject Traditional Direct Method Transient Stability Assessment TurboGenerator Under-voltage Limits Wind Power Plant Wind Turbine
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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