Wind Park Controller for Grid Stability via Centralized Coordination
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Wind parks face challenges in coordinating power output among wind turbines, especially when one turbine fails, due to complex information exchange and differing power outputs from various manufacturers, leading to inefficiencies in adjusting power supply to match grid demands.
Innovation Solution
A controller-based method that adjusts turbine target values relative to the wind park's overall output, allowing wind turbines to adapt their power generation without needing to know individual capacities, using a standardized percentage target value and considering grid conditions, such as sensitivity and frequency, to ensure efficient power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wind turbines exchange detailed information about individual capacities and failures to coordinate power output, then power supply reliability improves, but system complexity increases
Solution Approach 1:
A central control unit acts as an intermediary that receives individual turbine output information and failures, processes this data centrally, and distributes coordinated target values to each turbine. This mediator approach maintains reliability through centralized coordination while avoiding the complexity of direct peer-to-peer communication between all turbines.
Solution Approach 2:
The system changes the control parameter from detailed individual turbine capacity information to simplified target output values expressed as percentages of nominal power. Each turbine receives a target value indicating the percentage of its nominal power it should output, which simplifies the information exchange while maintaining coordination effectiveness.
2Productivity
If the wind park operates at maximum power output, then energy production increases, but grid stability may deteriorate when sudden demand changes occur
Solution Approach 1:
The control system continuously monitors the actual wind park output against target values and receives feedback about grid conditions. When grid demand changes suddenly, the control unit adjusts turbine target values in real-time based on this feedback, allowing the park to operate at maximum capacity under normal conditions while rapidly adapting to maintain stability when needed.
Solution Approach 2:
The system implements dynamic control where turbine target values are not fixed but continuously adjusted based on current grid conditions and actual output. This allows the wind park to transition smoothly between operating states, maintaining high productivity when grid conditions are favorable while ensuring stability when demand changes suddenly.
Data Source
AI summary
The invention relates to a method for supplying the electric power of a wind park comprising several wind turbines into an electric power supply grid, wherein each of the wind turbines provides an electric turbine output and the sum of all provided turbine outputs is supplied to the electric power supply grid as wind park output, and a turbine target value is specified for each of the wind turbines as a specification of the turbine output that is to be provided, and the turbine target value is controlled via a controller based on a control deviation, as a comparison of the supplied wind park output and a target value of the wind park output that is to be supplied.