Wind Power Plant Controller Sequential Telegram Transmission
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Solution Overview
Problem
Wind power plants face challenges in meeting the initial response time requirements specified by grid codes due to the time-consuming process of collecting and processing information from all wind turbines before sending control data, which can exceed the required 200 ms response time.
Innovation Solution
A method where a wind power plant controller prepares and sends telegrams with wind turbine controlling data to each wind turbine successively, allowing for immediate response after each telegram is completed, reducing the overall initial response time by sending control data as soon as it is ready, typically within a 10-100 ms interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If control data is sent to all wind turbines only after collecting and processing information from all turbines, then comprehensive control decisions can be made, but the initial response time exceeds the 200 ms requirement
Solution Approach 1:
The patent segments the control data transmission process by sending telegrams to individual wind turbines one at a time in succession rather than waiting to collect and process all turbine information centrally before sending any control data. This allows the first turbine to receive and respond to control data within the 200 ms requirement while other turbines receive their control data subsequently.
Solution Approach 2:
The wind power plant controller prepares control telegrams for each wind turbine in advance and sends them successively without waiting for complete information collection from all turbines. This preliminary preparation and sequential sending approach ensures that control actions are initiated promptly while still maintaining comprehensive control capability.
2Loss of time
If control telegrams are prepared and sent successively to each wind turbine, then the initial response time is reduced to under 200 ms, but the total time to send control data to all turbines increases
Solution Approach 1:
The patent maintains continuous useful action by having the controller prepare and send control telegrams to successive wind turbines without idle waiting periods. While the first turbine receives control data within 200 ms, the controller continues to prepare and send telegrams to subsequent turbines in an uninterrupted sequence, minimizing the total transmission time despite the sequential approach.
3Reliability
If all wind turbine information is collected and processed before sending control data, then accurate control decisions can be made for the entire plant, but the response time cannot meet grid code requirements
Solution Approach 1:
The patent applies segmentation by dividing the control decision-making process into individual turbine-level decisions rather than requiring a single comprehensive decision for all turbines. Each turbine receives control data based on plant-wide objectives without requiring complete information processing for every turbine before the first response, thus achieving both reliability and speed.
Solution Approach 2:
The controller performs preliminary preparation of control telegrams for individual turbines based on available information and plant-wide control objectives, sending them successively without waiting for complete information collection. This allows accurate control decisions to be made progressively rather than requiring all information to be processed before any action.
Data Source
Figure 1
Figure 2
Figure 3a~3b
AI summary
A wind power plant, a wind power plant controller and a method of controlling a wind power plant are provided. The method includes a) preparing a telegram comprising wind turbine controlling data for one of the plurality of wind turbines of the wind power plant; b) sending the telegram to the wind turbine upon completion of the telegram; and c) successively repeating steps a) and b) for each of the remaining wind turbines. An initial response time of the wind power plant is shortened; thus, initial response time requirements of the wind power plant specified by grid codes may be fulfilled more easily.