Wind Park Startup Control Network Power Limits
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Solution Overview
Problem
Wind parks incur additional costs due to excessive energy drawn from the network during windless periods for operational procedures, exceeding agreed maximum limits and resulting in higher billing rates.
Innovation Solution
Implementing a method to control operational procedures in wind power installations such that electrical power is drawn from the network only up to a predetermined maximum value, with time-staggered startup of installations and use of energy storage means to minimize network power usage, and optimizing startup procedures based on wind direction and energy requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all wind power installations are started up simultaneously during windless periods, then operational procedures can be completed efficiently, but excessive energy is drawn from the network exceeding agreed maximum limits and incurring higher costs
Solution Approach 1:
The wind park is divided into multiple groups (first group and second group) that are started up in different time stages. The first group is started during windless periods using network energy, while the second group is started after wind becomes available, using energy produced by the first group. This segmentation prevents simultaneous startup of all installations and keeps network energy consumption within agreed limits.
Solution Approach 2:
The first group of wind power installations is started up in advance during windless periods to prepare the system for subsequent operation. This preliminary action ensures that when wind becomes available, the first group is already operational and can immediately produce energy to support the startup of the second group, eliminating the need for excessive network energy consumption.
2Ease of operation
If wind power installations draw energy from the network during windless times for operational procedures, then operational procedures can be carried out, but additional costs are incurred that reduce wind park returns
Solution Approach 1:
The startup process is organized into periodic phases: first group startup during windless periods, followed by wind availability detection, then second group startup using produced energy. This periodic action pattern ensures that network energy is consumed only when absolutely necessary (during windless periods for the first group) and that operational procedures for the second group are performed using self-produced energy, minimizing costly network energy consumption.
Solution Approach 2:
The wind park becomes self-sufficient by using the energy produced by the first group to startup the second group. This self-service approach eliminates the need for the second group to draw expensive network energy, making the system economically viable by covering its own energy needs during the startup phase.
3Loss of energy
If network energy is limited for wind park operation, then costs are reduced, but the ability to carry out operational procedures such as azimuth adjustment and blade angle adjustment is constrained
Solution Approach 1:
Operational procedures are segmented between two groups of installations. The first group performs operational procedures (azimuth adjustment, blade angle adjustment, etc.) during windless periods using limited network energy. The second group performs its operational procedures after wind becomes available, using energy produced by the first group. This segmentation ensures all necessary procedures are completed while keeping network energy consumption within limits.
Solution Approach 2:
The first group completes its operational procedures in advance during windless periods, preparing the system for efficient operation when wind becomes available. This preliminary action ensures that critical procedures are not delayed and that the wind park can quickly transition to self-powered operation, maintaining productivity while respecting energy constraints.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Reduces network power draw costs by limiting energy consumption during startup and operational procedures, enabling efficient wind park operation and self-contained startup, even during network failures, while minimizing the need for expensive network energy.
Implementation Method 1
a wind power installation having an electrically excited generator
Data Source
AI summary
The present invention concerns a method of operating a wind park having a plurality of wind power installations. The invention further concerns a wind power installation having an electrically excited generator and a wind park having a central apparatus for controlling the park. Therefore the object of the present invention is to provide a method of operating a wind park having a plurality of wind power installations, a wind power installation having an electrically excited generator and a wind park having a central apparatus for control of the park, wherein the execution of operational procedures is effected with a restricted or reduced power draw from the network (reference power). A method of operating a wind park comprising a plurality of wind power installations characterized in that the operational procedures of each wind power installation are controlled in such a way that electrical power is taken from the network only up to a predeterminable maximum value.