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Improvements relating to current injection in wind power plants

A current injection and generator technology, applied in the control of wind turbines, wind power generation, wind turbines, etc., can solve the problems of inability to implement new requirements for active current, non-compliance, etc.

Active Publication Date: 2020-07-24
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, any change in grid conditions or WPP may result in non-compliance
Furthermore, a current system using only the K factor will not be able to implement the new requirements for active current

Method used

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  • Improvements relating to current injection in wind power plants
  • Improvements relating to current injection in wind power plants
  • Improvements relating to current injection in wind power plants

Examples

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Comparison scheme
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Embodiment Construction

[0035] figure 1 A typical architecture is shown where a wind power plant (WPP) is connected to the main transmission grid as part of a wider electricity network. The examples shown are representative only, and the skilled person will understand that other specific architectures are possible in relation to wind power plants and power plants for other renewable energy sources. Additionally, the skilled artisan will understand that the methods, systems and techniques, also described below, may be applicable to many different configurations of power networks. Furthermore, the components of wind power plants and power networks are conventional and therefore familiar to the skilled person. In particular, although a WPP is described herein as having multiple wind turbine generators, it should be understood that a WPP can also be considered to include STATCOM equipment, substation equipment, cables, plant controllers, and all necessary to connect the WPP to the main grid. other part...

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Abstract

A method for controlling a renewable energy generator is disclosed, the renewable energy generator being connected to a Point of Interconnection of an external power grid by a connecting network, wherein the connecting network has an associated impedance level. The method comprises: monitoring at least one parameter of the connecting network and the voltage level at the Point of Interconnection; generating, during normal operating conditions, at least one current injection profile based upon the at least one measured parameter and a predetermined injection profile; and operating the renewableenergy generator, during a grid fault, to output current according to the at least one current injection profile, so as to achieve a current set point at the Point of Interconnection.

Description

technical field [0001] The present invention relates to a method of controlling a renewable energy plant, a renewable energy plant controller, and more generally to a wind turbine plant. Background technique [0002] Newly commissioned renewable power plants (especially wind power plants) are expected to operate and adapt to a number of different scenarios when connected to the electricity network. A wind power plant (WPP) usually comprises a plurality of wind turbine generators and is also called a wind park or a wind farm. Regulatory and general operation of the power plant is controlled by a power plant control system or controller (PPC), which enforces operating limits and requirements set by the transmission system operator (TSO) or country-specific grid interconnection requirements or "grid codes". The TSO also communicates power delivery requirements (including active and / or reactive current delivery requirements) to the PPC. [0003] Grid codes often include speci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/16H02J3/38F03D7/02F03D7/04H02J3/00
CPCF03D7/0284H02J3/16F05B2270/10711F05B2270/337H02J3/001H02J2300/28H02J3/381Y04S40/12Y02B90/20H02J3/50H02J13/00006H02J13/00002
Inventor L·S·克里斯滕森B·W·安德森F·R·朗多罗
Owner VESTAS WIND SYST AS