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Automatic grid connection system for wind turbine asynchronous generator

An asynchronous generator and generator technology, applied in wind power generation, single-grid parallel feeding arrangement, etc., can solve the problems of increasing equipment cost, reducing work reliability, and increasing equipment complexity factor.

Inactive Publication Date: 2011-04-20
夏敬释
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This increases the complexity factor of the equipment, reduces the reliability of the equipment, and increases the cost of the equipment

Method used

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  • Automatic grid connection system for wind turbine asynchronous generator
  • Automatic grid connection system for wind turbine asynchronous generator

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Embodiment Construction

[0006] As attached.

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Abstract

The invention discloses an automatic grid connection system for a wind turbine asynchronous generator, which belongs to the field of automatic control. When generating power, most large-size wind turbine generators are connected to a grid by converting (inversing) cyclic waves and voltage thereof into the cyclic waves and voltage of the grid, which not only increases the complexity coefficient of equipment and reduces the operating reliability of the equipment, but also increases equipment cost. However, an asynchronous generator can be connected to the grid conveniently, and that is accomplished automatically in the invention. The key point of the system lies in a controller part. The system controls the wind turbine generator to be connected to and separated from the grid automatically, clears the fault of the generator automatically and allows the wind turbine generator to separate from the grid and stop automatically in case of dangerous wind speed.

Description

technical field [0001] The invention belongs to the field of automatic control. Background technique [0002] When large-scale wind turbines generate electricity, they are mostly converted (inverted) into the frequency and voltage of the grid and connected to the grid. This increases the complexity factor of the equipment, reduces the working reliability of the equipment, and increases the cost of the equipment. The asynchronous generator can be easily connected to the power grid, and this system solves this problem. Contents of the invention [0003] When the wind force asynchronous generator is very small, this system disconnects the generator from the power grid, and the generator is in the initial working state. When the wind force increases, the speed of the generator increases, and when the speed exceeds the "synchronous speed" plus Δ1, the speed detection device of this system issues an instruction to connect the engine to the power grid. At this time, it is equi...

Claims

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Application Information

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IPC IPC(8): H02J3/38
CPCY02E10/763Y02E10/76
Inventor 夏敬释
Owner 夏敬释
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