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Improvements relating to reactive power control in wind power plants

一种发电厂、功率的技术，应用在风力发动机的控制、风能发电、无功功率调整/消除/补偿等方向，能够解决发电厂断开、电网不稳定等问题

Active Publication Date: 2019-06-18
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, limiting reactive power exchange based only on active power measurements can lead to disconnection of individual generators within the power plant, disconnection of the power plant as a whole, or even grid instability

Method used

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  • Improvements relating to reactive power control in wind power plants
  • Improvements relating to reactive power control in wind power plants
  • Improvements relating to reactive power control in wind power plants

Examples

Experimental program
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Embodiment Construction

[0031] 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 power network. The examples shown are representative only, and the skilled person will understand that other specific architectures are possible, both with respect to wind power plants and power plants for other renewable energy sources. Additionally, the skilled artisan will appreciate that the methods, systems and techniques also described below may be applicable to many different configurations of power networks. Furthermore, the components of the wind power plant and the power network are conventional and therefore familiar to the skilled person.

[0032] figure 1 A power network 10 is shown comprising a wind power plant (WPP) 12 comprising a plurality of wind turbine generators or more simply "wind turbines" 14 . Single wind turbines are also possible. Each of the plurality of wind turbines 14 converts wind energy into electrical...

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Abstract

A method for controlling a renewable energy power plant comprising a plurality of wind turbine generators is provided. The method includes: measuring a voltage level associated with a point of interconnection between a power transmission network and the power plant; calculating a reactive power exchange limit based upon the measured voltage level; and controlling the power plant so that the calculated reactive power exchange limit is not exceeded.

Description

technical field [0001] The present invention relates to a method of controlling a power plant, a power plant controller and a wind turbine power plant, more generally a renewable energy power plant. Background technique [0002] Newly commissioned wind farms and other forms of renewable energy are now expected to regulate the power they supply to the grid. A wind power plant comprises a plurality of wind turbine generators and is also referred to as a wind farm or wind park. The regulation and general operation of the power plant is controlled by a power plant control system or controller (PPC) which implements the power plant as specified by the Transmission System Operator (TSO) or by country-specific grid interconnection requirements or 'grid codes' operating restrictions and requirements. The TSO also communicates power transfer requirements to the PPC. [0003] Grid codes usually include specific restrictions on reactive power exchange at points of interconnection (P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18F03D7/04
CPCY02E40/30F03D7/042H02J3/18Y02E10/72Y02E10/76F03D9/25H02J3/38
Inventor N·D·卡劳M·古普塔M·D·贾丁J·斯瓦斯卡兰
Owner VESTAS WIND SYST AS
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