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Improved Frequency Control

A frequency controller, frequency change technology, applied in wind turbine control, engine control, AC network with the same frequency from different sources, etc.

Active Publication Date: 2016-03-23
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the constant K 1 and K 2 Completely static, its value does not take into account changes that occur in the supply network

Method used

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Embodiment Construction

[0039] The present invention will now be explained in more detail. Viewed in the broadest terms, the present invention relates to a control of a power supply network operatively connected to a wind turbine installation by determining steady-state and / or dynamic relevant parameters of the power supply network and applying the determined parameters in a controller method of the fundamental frequency.

[0040] As stated previously, the term wind turbine installation should be interpreted broadly. Thus, the term wind turbine installation is intended to cover wind turbines working as isolated wind turbines or wind turbines working in small groups, wind power plants or combinations of such wind power plants.

[0041] Such as figure 1 As shown, and explained in more detail below, one aspect of the invention involves varying (increasing or decreasing) the active power supplied to the grid by a given amount ΔP, followed by measuring the absolute frequency change Δf and / or Rate of ch...

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Abstract

The invention relates to a method for controlling the fundamental frequency of an electricity supply network operatively connected to the electricity supply network, said method comprising the steps of determining steady-state and / or dynamic relevant parameters of the relevant electricity supply network, and at said wind The determined parameters are applied in a frequency controller of the turbine installation to improve the frequency control of the fundamental frequency of the power supply network.

Description

technical field [0001] The invention relates to a method for improving frequency controller characteristics of a wind turbine installation, such as a wind power plant, connected to a power supply network. The method according to the invention involves the determination of steady-state and / or dynamically relevant grid parameters. The invention also relates to a control system and a wind turbine installation capable of performing the aforementioned method. Background technique [0002] It is known to operate a power generating unit, such as a wind power plant, to control the fundamental frequency of an electrical supply network operatively connected to the power generating unit. [0003] In order to optimally control the fundamental frequency of the supply network, information about the steady-state and dynamic behavior of the supply network is required. [0004] In EP1914419 a method for varying the active power supplied by a wind energy installation is proposed. The metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/24
CPCF03D7/0284F03D7/043F05B2270/337H02J3/06F03D9/255H02J2300/28H02J3/381Y02E10/76Y02E10/72H02J3/48
Inventor J·M·加西亚
Owner VESTAS WIND SYST AS
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