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Existing active power control methods mostly take one wind farm as unit and regulate its active power independently, which cannot effectively satisfy comprehensive active power control demands of large-scale wind power base. Therefore, this paper proposes an active power coordination control strategy for wind farm cluster (WFC). The corresponding control system is divided into four levels — wind energy...
With the steadily increasing penetration of wind power into the grid, wind power is likely to displace the output of some thermal units and this can result in a reduction in fuel consumption and harmful emissions. On the other hand, due to the volatility of wind power, it brings great influences to power system frequency-regulating. Then, considering of the demand of system frequency-regulating, this...
This paper proposes an optimized dispatch strategy for active power cutback control in a wind farm. The strategy is considered as the supplement of the control strategy of the active power control system for wind farm clusters. Based on the priority list method, the control strategy is designed to realize the dynamic control sequence of wind turbines considering regulation capacity, regulation speed...
With the rapid increasing of the installed capacity of wind power, the difficulty of system frequency regulation is more apparent than ever for the volatility and randomicity of wind power. Therefore, this paper proposes one strategy of wind farm power regulation considering system frequency regulation demand. The corresponding control system is divided into three levels–wind energy management level,...
More and more wind and solar generations are integrated into power grid, especially wind generators, which will bring challenges to the conventional stability control system. The corresponding measures including FACTS, LVRT, Energy Storage and Power Prediction technologies are discussed to deal with those challenges. The application of these technologies can improve the controllability of wind power,...
This paper describes acoustic emission (AE) techniques based on Hilbert-Huang transform (HHT) that were recently exercised to characterise the AE signals released from the wind turbine bearing. Acoustic emission that detects elastic stress waves within a structure failure is capable of online monitoring and very sensitive to the fault development. AE wave is a non-stationary stochastic signal. Hilbert-Huang...
With rapid development of wind power generation, the large capacity wind farms are built up and integrated into transmission network. The effect of wind farms on the grid becomes more serious and more extensive. In order to investigate the dynamic performances of the grid-connected wind farm and the interaction of the wind farms, it is necessary to present the appropriate models of wind farms, which...
The paper deals with the impact of wind power integration on power system small signal stability. The DFIG wind turbine consisting of a back-to-back PWM converter is introduced. Generator model is given first, ignoring the transient of stator. The converter control, shaft and pitch angle control diagrams are picked out for a detailed study subsequently. A case study is performed in part three, eigen-analysis...
This article is concerned with the impact of large-scale wind farms utilizing double fed induction generator (DFIG) on the transient stability to a general power system. In the first instance, the synthetical dynamic model of the wind turbine generators (WTGs) is introduced, including pitch angle control model and the generator protective model. And then, the simulation is made to the CIGRE B4-39...
The paper studies reactive power compensation strategy of wind farm based on optislip wound rotor induction generators (WRIGs). The WRIGs wind farm shares high market occupancy in China, but academic researches on this grid-connected wind generation are few. Due to the WRIGs wind turbines not allowing the control of the reactive power, so it is necessary that reactive power compensation device is...
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