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This paper presents a neotype control strategy for maximum power point tracking (MPPT) of doubly-fed induction generator based wind turbine (DFIG-WT). The strategy adopts proportional-integral (PI) based regulators and feedback linearization control (FLC) based regulators in the power and current control loops of DFIG, respectively. The FLC based regulator can fully decouple and linearize the nonlinear...
This paper proposes a novel approach for short-term wind power forecast, where wind speed is predicted and used to forecast wind power through a power curve obtained from historical data. With the help of the empirical mode decomposition (EMD) method, wind speed is decomposed into mean trend and stochastic component. Subsequently, p-step forecast is conducted for the two components separately. The...
This paper presents a Group Search Optimizer with Multiple Producer (GSOMP) to solve the voltage control problem of the power systems penetrated with wind power. Although the utilization of wind turbines in power systems reduces the fuel cost and carbon emission efficiently, it also affects the reactive power flow, which might result in negative efffect on the power losses and voltage stability. In...
High-frequency switching overvolatges (SOV) are considered as a possible source causing component failures in existing offshore wind farms (OWFs). In order to study such overvolatges in OWFs, the main OWF components, including vacuum circuit breaker (VCB), submarine cables and transformers should be properly investigated. Firstly the parameters influencing VCB behaviors are considered, such as current...
In this paper, micro pumped storage (PS) is used for energy storage system (ESS) for the islands with different altitude, and demand-side is treat as a kind of possible power supply which can actively participate in the planning and operation in microgrid. A capacity configuration optimization model is proposed with the consideration of demand response (DR) in island microgrid, and the particle swarm...
This paper proposes a model of a central heating electric boiler integrated with a stand-alone wind generator. The paper also investigates control schemes for the wind turbine generator and the electric boiler. For the wind turbine generator, the two control schemes are proposed for control of the pitch angle and generator rotor speed respectively. The pitch angle control uses the generator output...
This paper presents a feedback linearization control (FLC) scheme for maximum power point tracking (MPPT) of permanent magnet synchronous generator (PMSG) based wind turbine (WT). The FLC strategy can fully decouple and linearize the original nonlinear system and thus provide a optimal controller crossing a wide range operating conditions. It performs better than the conventional vector control (VC)...
This paper proposes the adaptive passivity-based control of a thyristor controlled series capacitor (TCSC) for damping improvement of a permanent-magnet synchronous generator (PMSG) based offshore wind farm (OWF) fed to a one-machine infinite-bus (OMIB) system. The passivity-based control (PBC) is an energy-based approach whose aim is to render the closed-loop system passive with a given storage function...
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