NDLI: Precise dynamic initialisation of fixed-speed wind turbines under active-stall and active-pitch controls from their aerodynamic power coefficients using unified Newton

Content Provider	IET Digital Library
Author	Aree, Pichai
Abstract	Vast majority of already-installed grid-connected wind turbines is fixed-speed wind generators (FSWGs). Their initialisations for power-system dynamic simulations are mostly performed using conventional power-flow approach, causing an unavoidable reactive-power discrepancy between power-flow result and generator dynamic model. To eliminate this problem, unified Newton–Raphson (NR) power-flow approach together with wind-turbine aerodynamic power coefficient is applied for accurate initialisation of the FSWG under passive-stall regulation. However, FSWG initialisations relating to two other active-stall and active-pitch regulations under the same approach have not yet been addressed. Therefore, in this study, the unified power-flow approach is straightforwardly extended to yield efficient and precise dynamic initialisations of active-stall- and active-pitch-regulated FSWGs. In the proposed model, variables of generators and wind turbines are fully solved all together with the power coefficients. The obtained power-flow result is compared with the published result for model verification. Efficiency of the extended algorithm is demonstrated using IEEE-300bus and 118bus networks with large groups of wind power plants. The simulation results reveal that the extended algorithm not only gives precise steady-state initialisation of the FSWGs but also retains NR quadratic convergence characteristics.
Starting Page	9
Ending Page	19
Page Count	11
ISSN	17518687
Volume Number	12
e-ISSN	17518695
Issue Number	Issue 1, Jan (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/12/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.1225
Journal	IET Generation, Transmission & Distribution
Publisher Date	2017-04-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Pitch Control Active Stall Control Active-pitch Regulation Active-stall Regulation Aerodynamics Control of Electric Power System Fixed-speed Wind Generator Fixed-speed Wind Turbine FSWG Aerodynamic Power Coefficient FSWG Precise Dynamic Initialisation FSWG Precise Steady-state Initialisation Grid-connected Wind Turbine IEEE-118bus Network IEEE-300bus Network Interpolation And Function Approximation Load Flow Control Newton-Raphson Method NR Quadratic Convergence Characteristic Numerical Analysis Pitch Control (position) Power System Control Power System Simulation Power-system Dynamic Simulation Spatial Variables Control Unavoidable Reactive-power Discrepancy Unified Newton-Raphson Power-flow Approach 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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