Wind Farm Control Variable Segmentation for Fast Unit Updates
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Solution Overview
Problem
Existing wind farm control systems face limitations in data transmission rates, making it difficult to transmit individual controlling control variables to all units at a fast update rate, especially with older data transmission technology, which is necessary to manage stringent power parameters and unit-specific interference.
Innovation Solution
The method involves separating controlling control variables into two components, where one component is transmitted in a data packet received by all units and the other in a packet addressed to specific units, allowing for a higher update rate of globally valid components without increasing processing power, and enabling individual control variable updates with lower frequency transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If individual controlling control variables are transmitted to all units, then unit-specific control precision is improved, but data transmission rate becomes insufficient
Solution Approach 1:
The controlling control variable is segmented into a first component (wind farm-level, common to all units) and a second component (unit-specific, individual to each controlled unit). This segmentation allows the first component to be transmitted once to all units while the second component is transmitted individually, resolving the contradiction between providing precise individual control and maintaining adequate data transmission rates.
2Ease of operation
If broadcast data packets are used for transmission, then data transmission simplicity is improved, but individual unit control capability deteriorates
Solution Approach 1:
The control variable transmission is segmented into two types: broadcast data packets for the first component (applicable to all units) and individual data packets for the second component (specific to each unit). This dual-mode transmission approach maintains the simplicity of broadcast transmission while adding individualized control capability through targeted packets.
Solution Approach 2:
The first component of the controlling control variable serves a universal function across all controlled units, while the second component provides unit-specific customization. This multi-functionality allows a single control system to handle both collective and individual control requirements efficiently.
3Speed
If fast update rate is implemented for all units, then control responsiveness is improved, but processing power requirements increase
Solution Approach 1:
The update rate requirements are segmented: the first component (common to all units) is updated at a fast rate and broadcast to all units, while the second component (unit-specific) is updated at a lower rate and transmitted individually. This segmentation reduces the total processing burden while maintaining fast control responsiveness for critical parameters.
Data Source
AI summary
Provided is a method for transmitting controlling control variables from a windfarm controller to units including at least one wind power installation or at least one energy store. The method include determining first and second controlling control variable components by the windfarm controller, outputting the first controlling control variable component in a first data packet, outputting the second controlling control variable component in a second data packet, receiving the first and second data packets by a first unit, and determining a controlling control variable from the first and second controlling control variable components. The first data packet has a receiver address which is assigned to the first unit and to at least one further unit, and the second data packet has a receiver address which is assigned to at least the first unit. Provided is a windfarm controller, a wind power installation and a windfarm configured to perform the method.