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Control of a renewable energy power plant to resume normal operation following a fault

A renewable energy, normal operation technology, applied in the direction of computer control, general control system, control/regulation system, etc., can solve problems such as unsatisfactory network conditions and unstable power network

Pending Publication Date: 2021-08-31
VESTAS WIND SYST AS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some cases, network conditions are not satisfactory and normal restoration controls can lead to more unstable power networks

Method used

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  • Control of a renewable energy power plant to resume normal operation following a fault
  • Control of a renewable energy power plant to resume normal operation following a fault
  • Control of a renewable energy power plant to resume normal operation following a fault

Examples

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Embodiment Construction

[0036] 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. figure 1 The schematic diagram should only be used as a representative of the power network. Alternative configurations of electricity networks and power plants are known, and it is expected that in addition to figure 1 Other known components may be incorporated in addition to or instead of those shown and described. Such changes are within the ability of skilled artisans. For example, depending on the number of WTGs included in multiple WTGs, it is anticipated that substations or additional transformers will be incorporated into the WPP.

[0037]As the skilled reader will appreciate, a WPP includes at least one wind turbine generator (WTG), more typically referred to simply as a "wind turbine." WPP is also known as wind park or wind farm. The examples shown are representative only, and the skilled reader will un...

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PUM

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Abstract

There is provided a method (500) for operating a renewable energy power plant (12) comprising a plurality of renewable energy generators (14), the method (500) comprising: calculating (502) a rate of change of reactive power reference level for transitioning between a present reactive power reference level, output by a reactive power controller (206), and a target reactive power reference level, the target reference level being suitable for normal operation of the renewable energy power plant (12); and, following a fault on a power network to which the renewable energy power plant (12) is connected, dispatching (506) a control signal for controlling the renewable energy power plant (12) to generate or consume reactive power at the calculated rate of change to transition the reactive power level of the renewable energy power plant (12) to the target reactive power reference level.

Description

technical field [0001] The present invention relates to a method of controlling a renewable energy power plant, a renewable energy power plant controller, and more generally to a wind turbine power plant. Background technique [0002] Newly commissioned renewable power plants, especially wind power plants, are expected to operate and adapt to many different situations when they are 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 wind farm. The regulation and general operation of the power plant is controlled by a power plant control system or controller (PPC), which enforces the transmission system operator (TSO) or country-specific grid interconnection requirements or "grid codes". "Set operating constraints and requirements. The TSO also communicates power delivery needs to the PPC. [0003] Grid codes usually include specific requirements for the reactive and / or ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/18H02J3/38
CPCH02J3/18H02J2300/28H02J3/381Y02E40/30H02J13/00002H02J3/004H02J2300/22G05B15/02
Inventor M·古普塔K·纳伊比J·斯瓦斯卡兰
Owner VESTAS WIND SYST AS
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