Method for merging low-frequency wind generating set into electric network

A wind power generator group, low-frequency technology, applied in wind power generators, wind power generation, engines, etc.

Inactive Publication Date: 2007-05-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can connect the wind power generators to the power grid through the low-frequency tra

Method used

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  • Method for merging low-frequency wind generating set into electric network

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Embodiment Construction

[0012] Referring to Fig. 1, the distributed power system of the present invention is composed of a low-frequency wind power generator group 1, a low-frequency step-up transformer 2, a high-voltage low-frequency transmission line 3, an AC frequency converter 4, a power frequency step-up transformer 5, and a power frequency power system 6.

[0013] The three-phase outlet terminal of the low-frequency wind turbine group 1 is connected to the primary winding of the low-frequency step-up transformer 2 through the busbar A, and the secondary winding of the low-frequency step-up transformer 2 is connected to the input terminal C of the AC inverter 4 through the high-voltage low-frequency transmission line 3 , the output terminal D of the AC-AC converter 4 is connected to the input terminal of the power frequency step-up transformer 5 , the output terminal E of the power frequency step-up transformer 5 is connected to the power frequency power system 6 , and is output by the power frequ...

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Abstract

The invention relates to a method for accessing low-frequency wind generator into electric network, wherein it uses wind generators, low-frequency boost transformer, high-voltage low-frequency transmission line, alternative-alterative converter, and work-frequency boost.

Description

technical field [0001] The invention belongs to the technical field of electric engineering, and relates to a method for connecting distributed power sources to a grid, in particular to a method for connecting a group of low-frequency wind power generators to a grid. Background technique [0002] In the wind power generation system, when the wind power generator runs in parallel with the power grid, the output frequency of the wind power is required to be consistent with the frequency of the power grid, that is, the frequency remains constant. There are mainly two ways to realize generator constant frequency: constant speed and constant frequency and variable speed and constant frequency. Varies with the wind speed, but keeps the frequency constant in a specific way. [0003] In the constant speed and constant frequency system, the synchronous motor or the induction motor is mainly directly connected to the grid. The constant speed and constant freq...

Claims

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Application Information

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IPC IPC(8): H02J3/38F03D5/00
CPCY02E10/763Y02E10/70Y02E10/76
Inventor 王锡凡王秀丽王建华别朝红
Owner XI AN JIAOTONG UNIV
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