Design of hoisting scheme for wind turbine energy storage device
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6 FAQs about [Design of hoisting scheme for wind turbine energy storage device]
How does a wind turbine storage device work?
The storage device exchanges power at the DC-link of the wind turbine so as to the net power flow injected together with the wind turbine becomes smoothed as much as possible. The variability of the power generated by the wind turbine increases in high wind speeds (considering the partial load operation of the wind turbine).
How does a wind turbine work?
The wind turbine provides highly variable power to the grid. To smooth this power, the storage device exchanges power with an external network in order to smooth the power flow. For high wind power values, part of the energy is stored in the flywheel. This energy is delivered to the grid during low wind power levels.
How does wind turbulence affect a storage device?
Given a wind turbulence, the wind power that the storage device has to compensate is higher considering high mean generation levels of the wind turbine than considering low generation levels (referring to the partial load operation of the wind turbine), as most wind power is injected into the grid.
What is a wind turbine index?
This index is defined as the quotation of the turbulent energy component reduction of the wind turbine output from the indicated cutoff filtering frequency 0.4 Hz after the application of the storage device and the turbulent energy component without the flywheel support.
What is the basic research of FESS for wind power system?
In order to carry out the basic research of FESS for wind power system, Tsinghua University and China Electric Power Research Institute had developed a 20 kW/3.6 kWh FESS. Its charge-discharge process lasted about 25 minutes and the maximum speed was 24,000 r/m.
What is the average wind speed injected to the grid?
Spectrum of the power injected to the grid, with and without including storage support. The mean wind speed is 7 m/s, and wind turbulence is 0.05 pu. In order to better quantify the improvement achieved by the storage device controlled by the proposed algorithm, an index is introduced.
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