Wind Farm Communication Synchronization Using Time Slots
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Solution Overview
Problem
Existing communication methods in wind farms require separate synchronization units or specially designed subscriber units, leading to inefficiencies and increased data overhead due to the need for explicit synchronization messages, which can result in input buffer overflow and reduced system reliability.
Innovation Solution
A method where systems in a wind farm communicate using a cyclically recurring time transmission interval, with each system assigned a specific time to send messages based on its position in a sortable sequence, synchronized by messages from the first position in the sequence, eliminating the need for special synchronization messages and ensuring reliable and efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate synchronization units or specially designed subscriber units are provided, then synchronization can be achieved, but device complexity and data overhead increase
Solution Approach 1:
Each subscriber unit is designed to perform multiple functions: it acts as both a data transmitter and a synchronization unit. The subscriber units can independently determine their transmission times based on received messages without requiring separate synchronization devices, thereby reducing overall system complexity while maintaining synchronization reliability
Solution Approach 2:
Subscriber units autonomously determine their own transmission times by processing received messages and calculating their positions in the sequence themselves. This self-service approach eliminates the need for centralized synchronization control and reduces device complexity
2Reliability
If explicit synchronization messages are sent, then synchronization is achieved, but data overhead increases and input buffer overflow risk increases
Solution Approach 1:
Synchronization information is merged with regular data messages. Each message contains both data content and synchronization information (sequence position, timing data), eliminating the need for separate synchronization messages and reducing data overhead
Solution Approach 2:
Regular data messages serve dual purposes: they transmit operational data and simultaneously provide synchronization information to other subscriber units, thereby eliminating redundant synchronization messages and reducing overall data traffic
3Productivity
If all subscriber units send messages simultaneously, then communication efficiency is high, but input buffer overflow occurs
Solution Approach 1:
Subscriber units transmit messages periodically at predetermined time intervals rather than simultaneously. This periodic transmission pattern, coordinated through synchronization information, distributes message arrivals over time and prevents buffer overflow while maintaining efficient communication
Solution Approach 2:
The transmission process is segmented into discrete time slots with assigned message priorities. Messages are divided into different transmission categories based on urgency and type, allowing the system to manage message flow systematically and prevent buffer overflow
4Productivity
If subscriber units are synchronized to the same time base, then TDMA communication is achieved, but synchronization complexity increases
Solution Approach 1:
Each subscriber unit independently determines its own transmission time by processing received messages and calculating its position in the sequence. This decentralized approach eliminates the need for complex centralized synchronization mechanisms while achieving TDMA communication
Data Source
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AI summary
The invention relates to a method for communicating between installations (2) in a wind farm (1) and to an installation (2) suitable for carrying out the method according to the invention. In the method according to the invention for communicating between installations (2.1 to 2.7), which are organized in an order according to a sortable feature, for example installation numbers, in a wind farm (1), in which information transmitted by an installation in the form of a message is received by all other installations in the wind farm (1), a cyclically recurring, temporal transmission interval (12) is set up. A point in time in the transmission interval (12) at which the installation can transmit a message is assigned to each installation on the basis of the position thereof in the order, wherein points in time are organized from the start of the transmission interval (12), starting from the installation number at the first position in the order, in accordance with the position in the order. The start of the transmission interval is synchronized in all installations (2.1-2.7) using a message from the installation at the first position in the order. Synchronization is not effected using a special synchronization message, but rather on the basis of the messages transmitted from the individual installations (for example 2.1) to all other installations (2.2 to 2.7) in the wind farm.