Wind Farm Control for Grid-Compliant Turbine Operation Changes
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Solution Overview
Problem
There is a risk of conflicts between local control demands for individual wind turbines and farm-level control demands in a renewable energy farm, which can lead to non-compliance with obligations towards the power grid.
Innovation Solution
A central control unit evaluates all requests for operation changes in wind turbines, checking for conflicts with grid obligations, and defers execution if a conflict is detected, ensuring compliance with power grid requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If local control demands are implemented for individual wind turbines, then local operational needs are met, but conflicts arise with grid-level obligations and other turbine control demands
Solution Approach 1:
The central control unit serves as an intermediary between local turbine control systems and grid-level obligations. It receives local control demands, evaluates them against grid obligations and farm-level targets, and only permits execution if no conflicts exist. This mediator architecture enables local operational flexibility while guaranteeing grid compliance through centralized coordination.
2Reliability
If farm-level coordinated control is implemented, then total power output is appropriately controlled, but local control demands cannot be independently satisfied
Solution Approach 1:
The control system dynamically adapts its behavior based on the type of control demand received. For farm-level coordinated control, the central control unit maintains authoritative oversight of total power output. For local control demands, the system dynamically evaluates each request against current grid obligations and farm targets, permitting local autonomy when compatible and restricting it when conflicts arise. This dynamic approach enables the system to flexibly switch between centralized and decentralized control modes.
3Reliability
If all control demands are evaluated centrally, then conflicts are avoided, but control response time increases
Solution Approach 1:
The central control unit applies partial evaluation to control demands by checking only the necessary conditions for conflict avoidance rather than performing exhaustive analysis. When a local control demand is received, the system performs a focused evaluation against current grid obligations and farm targets, permitting execution if basic compatibility criteria are met. This partial action approach provides sufficient conflict avoidance while maintaining faster response times compared to comprehensive centralized optimization.
Data Source
AI summary
A method for controlling a renewable energy farm comprising a plurality of wind turbines and at least one central control unit is disclosed. The wind turbines of the renewable energy farm are connected to a power grid. The central control unit receives a request for change in operation of at least one of the wind turbines, where execution of the change in operation causes a change in power output of the wind turbine. The central control unit checks whether or not the change in power output is in conflict with at least one obligation of the renewable energy farm towards the power grid. In the case that the change in power output is in conflict with at least one obligation of the renewable energy farm towards the power grid, execution of the change in operation is deferred.