Wind Turbine Controller Merging Read Write Packets
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Solution Overview
Problem
The existing methods for controlling wind turbines in wind power plants are limited by the time it takes to gather information from multiple turbines and distribute control data, which hampers the response time and efficiency of central control systems.
Innovation Solution
A method that transmits both write and read instructions within a single data packet, reducing the time of a control loop by half by using a wind turbine controller to receive data packets from a central controller, effectuate write instructions, retrieve current values, and transmit them back for updated set points, thereby optimizing communication and response time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If separate read and write instructions are used in control loops, then the control system can maintain simplicity in instruction structure, but the response time and control loop duration increase significantly
Solution Approach 1:
The patent combines separate read instructions and write instructions into a single integrated data packet structure. This merged packet allows the central controller to send both read and write commands in one transmission, and receive both current values and updated set points in one response, effectively halving the number of communication cycles required and reducing overall response time.
Solution Approach 2:
The integrated data packet enables continuous control loop execution by eliminating idle communication gaps between separate read and write operations. The control loop can proceed without interruption as all necessary data exchanges occur within a single continuous packet exchange, maximizing the utilization of communication bandwidth and reducing control loop duration.
2Productivity
If multiple separate data packets are transmitted for read and write operations, then data can be organized by function, but the communication time and control loop duration increase
Solution Approach 1:
The patent merges multiple separate data packets (read request, read response, write request, write response) into a single integrated data packet that carries both read and write instructions and their corresponding responses. This consolidation reduces the total communication time by eliminating packet transmission gaps and processing overhead between separate packets.
Solution Approach 2:
The integrated data packet enables more frequent control loop executions by reducing the time required for each communication cycle. By compressing multiple communication operations into one periodic exchange, the system can execute control loops more rapidly and maintain higher productivity.
3Reliability
If traditional separate read/write instruction methods are used, then the system maintains ease of implementation, but the response time requirements cannot be met
Solution Approach 1:
The patent implements a merged data packet structure that combines read and write instructions along with their responses into a single communication unit. This approach meets stringent response time requirements by halving the number of communication cycles, while the added structural complexity is offset by the use of standardized packet formats and automated processing routines.
Data Source
AI summary
Embodiments herein control a wind turbine in a wind power plant where the wind turbine includes a wind turbine controller and at least one connected wind turbine component. Upon receiving a packet containing a “write/read” instruction, the wind turbine controller effectuates a write instruction by changing a set point associated with an attribute of a component in the wind turbine. The controller retrieves information data resulting from performing the write instruction from the component and transmits the information data to a central controller. The invention performs a fast and simple control loop by means of transmitting both the write and the read instruction within one single data packet.