Primary frequency modulation method of wind turbine generator coordinating with synchronous generator set

A technology for synchronous generators and wind turbines, applied in wind power generation, electrical components, circuit devices, etc., can solve the problems of lack of frequency stability, lack of coordination and control strategies and methods, etc.

Active Publication Date: 2017-05-31
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a lack of corresponding research on how to realize the coordination and frequency regulation of grid-connected wind turbines a

Method used

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  • Primary frequency modulation method of wind turbine generator coordinating with synchronous generator set
  • Primary frequency modulation method of wind turbine generator coordinating with synchronous generator set
  • Primary frequency modulation method of wind turbine generator coordinating with synchronous generator set

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Embodiment Construction

[0042] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.

[0043] figure 1 It is a schematic flowchart of a method for primary frequency regulation of a wind turbine coordinated with a synchronous generator set according to an embodiment of the present invention. Such as figure 1 As shown, the wind turbine primary frequency regulation method coordinated with the synchronous generator set may include: Step 1, judge whether the absolute value of the diffe...

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Abstract

The invention discloses a primary frequency modulation method of a wind turbine generator coordinating with a synchronous generator set. The method comprises the following steps: judging whether an absolute value of a difference between power grid frequency and rated grid frequency is greater than a threshold; if the absolute value is greater than the threshold, measuring current wind speeds of draught fans in the wind turbine generator; dividing the draught fans into different operation modes when the current wind speeds are greater than the rated wind speed, establishing different frequency modulation mathematic models for the draught fans in different modes, and calculating the frequency modulation output of the draught fans in corresponding operation modes according to the models; calculating a deviation absolute value of the power grid frequency and rated grid frequency, and judging a regulation and control area of the grid according to the deviation absolute value; selecting different frequency modulation outputs for the synchronous generator set according to the regulation and control area of the grid; and performing frequency modulation by the wind turbine generator and the synchronous generator set according to respective frequency modulation outputs. According to the method disclosed by the invention, the frequency modulation output between the wind turbine generator and the synchronous generator set can be coordinated, and the frequency modulation effect of the grid containing the draught fans is improved.

Description

technical field [0001] The invention relates to the technical field of power grid frequency regulation, in particular to a primary frequency regulation method for a wind turbine coordinated with a synchronous generator set. Background technique [0002] With the rapid growth of electricity demand and the requirement of sustainable development in the global economic development, wind power generation technology emerges along with the trend. As a renewable energy source, wind energy is green and environmentally friendly, and the use of wind energy to generate electricity is conducive to the sustainable development of the global economy. my country has a vast land area and abundant wind energy resources. With the global vigorous development of wind power generation technology, my country's wind power generation is also developing rapidly. The penetration rate of wind power in power grids in some areas of my country has exceeded 20%. With the maturity of wind power technology...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/44H02J3/46
CPCH02J3/386H02J3/44H02J3/46H02J2203/20Y02E10/76
Inventor 郭成李胜男李贻博王林宏覃日升周鑫
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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