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Inertia frequency modulation method of wind farm

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

Active Publication Date: 2018-01-09
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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  • Inertia frequency modulation method of wind farm
  • Inertia frequency modulation method of wind farm
  • Inertia frequency modulation method of wind farm

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Experimental program
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Embodiment Construction

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

[0074] See figure 1 As shown, the wind farm inertia frequency modulation method provided in this embodiment can be used on an energy management platform or a VSG virtual synchronous generator control platform. The method is mainly based on the existing primary frequency modulation (that is, with pitch frequency modulation). Combination of control), increase inertia frequency modulation, and perform compound control of the two, which specifically includes the following steps:

[0075] 1) Communication obtains the parameter information of wind farms and wind farms, 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 enters the frequency modulation mode, a...

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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 frequency control of wind farms, in particular to a method for frequency modulation of wind farms by inertia. Background technique [0002] In recent years, due to energy, environment, technology and other factors, the field of new energy has received widespread attention and development. The penetration rate of wind power in the power system has been increasing. At the same time, the proportion of traditional synchronous power generation devices has gradually decreased, and the power system has rotated The reserve capacity and moment of inertia are relatively reduced. [0003] Due to the intermittent and uncontrollable nature of wind energy, most wind turbines adopt 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 inertia of conventional power systems. ...

Claims

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Application Information

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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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