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This paper studies the influence of modeling the pitch angle controller on the transient behavior of a grid-connected wind farm subjected to electrical and mechanical disturbances. Two fixed-speed grid-connected wind farms are introduced based on radial power network for this study. The first wind farm is connected to the grid through transmission line and second one directly connected to the grid...
A wind farm usually consists of a large number of wind turbine generators (WTGs) connected through an internal electrical network and operating simultaneously. In order to study the impact of a wind farm on the dynamics of the power system, a major issue is to develop adequate equivalent models that allow characterizing the dynamics of all individual WTGs. In this sense, with the advance of power...
This paper examines the impact of increased penetration of doubly fed induction generator (DFIG) based wind power generation on frequency control of an interconnected two-area hydrothermal power system. The power electronic control of DFIG effectively isolates the inertia from the grid which will impose the serious threat to frequency regulation capability of the system. To mitigate the frequency...
In this paper, a doubly fed induction generator (DFIG) wind turbine controller which consists of two control loops is introduced. In steady state, the main control loop ensures that the wind power generators without wind speed measurement can perform active power control tasks below the nominal wind speed while the auxiliary stability control loop restraining the wind power system oscillations by...
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...
Renewable energy sources have the ability to provide electric power in rural areas whenever available. Although it is cheap, clean and abundant, the variation of output power with the variation of wind speed can cause significant power quality issues, especially in the case of a standalone generation system. This paper studies a network presenting a rural load, such as a small village, fed from a...
With the increasing share of the wind power in the power system, the impact of its integration is becoming more widespread. Based on the wind farm output forecasting and local electric network active power optimization results, the wind turbines electric control parameters are calculated as inputs to the pitch controller. A pitch control power regulation method based on application integration is...
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