A method for wind farm inertia frequency modulation

A wind farm and inertia technology, applied in the field of wind farm frequency control, can solve problems such as slow response of sustainable time, small contribution to dynamic stability, failure to simulate rotor inertia, etc.

Active Publication Date: 2019-08-30
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pitch control has strong adjustment ability, wide adjustment range, long sustainable time, but slow response, and little contribution to system dynamic stability
Although its control simulates the primary frequency modulation characteristics of synchronous generators, it fails to simulate the rotor inertia

Method used

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  • A method for wind farm inertia frequency modulation
  • A method for wind farm inertia frequency modulation
  • A method for wind farm inertia frequency modulation

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Experimental program
Comparison scheme
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Embodiment Construction

[0073] The present invention will be further described below in conjunction with specific examples.

[0074] see figure 1 As shown, the method for wind farm inertia frequency modulation provided by this embodiment can be used on an energy management platform or a VSG virtual synchronous generator control platform. control), increase the inertia frequency modulation, and carry out the compound control of the two, which specifically includes the following steps:

[0075] 1) Obtain the parameter information of the wind farm and the unit in the wind farm through communication, including collecting the information of the grid connection point, the unit information in the main control of the wind turbine and the parameter information set by the user.

[0076] 2) Determine whether the wind farm has the function of primary frequency modulation and whether it has entered the frequency modulation mode, as follows:

[0077] 2.1) Determine whether the wind field has the function of prim...

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Abstract

The invention discloses an inertia frequency modulation method of a wind farm. The method comprises the steps of (1) obtaining parameter information of the wind farm and units in the wind farm; (2) judging whether the wind farm has a primary frequency modulation function or not and whether the wind farm enters a frequency modulation mode or not; (3) detecting the inertia adjusting ability of eachfan and counting the total inertia adjusting ability of the whole wind farm; (4) calculating an inertia requirement value of the wind farm; (5) distributing the inertia to single fan; and (6) issuingand outputting a command value. The frequency modulation is carried out by mainly using the inertia of each fan, so that the double requirements of sustainable response speed and energy can be met atthe same time.

Description

technical field [0001] The invention relates to the technical field of wind farm frequency control, in particular to a method for wind farm inertial frequency modulation. Background technique [0002] In recent years, due to factors such as energy, environment, and technology, the field of new energy has received extensive attention and development, and the penetration rate of wind power in the power system has continued to increase. Reserve capacity and moment of inertia are relatively reduced. [0003] Due to the intermittent and uncontrollable nature of wind energy, most wind turbines use the power electronic grid-connected inverter mode. In this mode, there is no direct coupling relationship between the wind turbine speed and the grid frequency, which fails to reflect the inherent inertia and For frequency modulation and voltage regulation characteristics, if an appropriate control algorithm is adopted, the power supply based on the grid-connected inverter can simulate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/48H02J3/24H02J3/38
Inventor 朱敏唐彬伟
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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