LQG Design for Megawatt-Class WECS With DFIG Based on Functional Models' Fidelity Prerequisites
作者： E.B. Muhando , T. Senjyu , A. Uehara , T. Funabashi , Chul-Hwan Kim
关键词: Control theory 、 Electric power system 、 Induction generator 、 Wind power 、 Engineering 、 Linear-quadratic-Gaussian control 、 Blade pitch 、 Grid code 、 Machine control 、 Control engineering 、 Electricity generation
摘要: With the increasing trend of connecting high penetrations wind energy conversion systems (WECSs) to transmission networks comes challenge updating grid code for connection megawatt-class turbines. Starting with each WECS entity in farm, specifications would require ability complement some power system control services-voltage and frequency control-currently carried out by conventional synchronous generation. This paper investigates output stability a highly fluctuating environment. Based on performability model, strategy is devised maximizing low medium winds, maintaining rated above winds while keeping torsional torque fluctuations minimum. Control exercised via collective blade pitch as well generator control. The fundamental philosophy behind proposed turbine coupled an asynchronous doubly fed induction general can be easily extended other configurations.
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