Wind Turbine Switchgear Redundant Power Supply
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Solution Overview
Problem
Wind turbine facilities face challenges in ensuring reliable and quick disconnection from electrical grids for safety reasons, as existing switchgear systems may fail to trip correctly due to power supply disruptions, leading to potential safety risks and operational inefficiencies.
Innovation Solution
A wind turbine facility power supplying arrangement with redundant electrical power supply paths and switches, along with a series control circuit and alarm signal generation, ensures continuous power supply to switchgear even if one path is broken, enabling reliable disconnection and alerting operators to faulty switches, thus maintaining system reliability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single electrical power supply path is used for switchgear, then the device complexity is reduced, but the reliability of power supply deteriorates
Solution Approach 1:
The power supply system is segmented into multiple independent power supply paths (first power supply path and second power supply path), each with its own power switch (first power switch and second power switch). This segmentation allows the system to maintain power supply reliability by providing alternative paths while keeping each individual path relatively simple in structure.
Solution Approach 2:
The control circuit is configured to detect the status of power switches in advance and automatically switch between power supply paths before a failure occurs. The system monitors the operational status of power switches and proactively transitions to an alternative path when a fault is detected, ensuring continuous power supply to the switchgear without interruption.
2Reliability
If redundant power supply paths are implemented, then the reliability of switchgear operation is improved, but the device complexity increases
Solution Approach 1:
The control circuit merges the monitoring functions for multiple power switches into a single integrated unit. The control circuit simultaneously detects the status of both power switches and manages the switching between power supply paths through a unified control logic, reducing the overall control complexity despite having redundant power supply paths.
Solution Approach 2:
The control circuit implements feedback mechanisms by continuously monitoring the operational status of power switches and automatically adjusting the power supply configuration based on detected conditions. When a power switch fault is detected, the control circuit receives feedback signals and automatically switches to the alternative power supply path, ensuring reliable operation without requiring complex manual intervention.
3Reliability
If power switches are monitored for fault detection, then the safety is improved, but the measurement precision requirements increase
Solution Approach 1:
The power switches are equipped with self-diagnostic capabilities that automatically detect their own operational status and provide feedback signals to the control circuit. Each power switch monitors its own functionality and can independently identify faults, reducing the complexity of external detection systems while maintaining high safety standards through continuous self-verification.
Data Source
AI summary
The present invention relates to a wind turbine facility power supplying arrangement for supplying electrical power to at least a switchgear being able to isolate the wind turbine facility from an electrical network, the wind turbine facility power supplying arrangement comprising a first electrical power supply path able to be provide electrical power to the switchgear and a first power switch able to break said first electrical supply path and able to be controlled for opening and closing. The wind turbine facility power supplying arrangement contains at least another parallel electrical power supply path able to provide electrical power to the switchgear, said parallel electrical supply path been breakable with at least another respective parallel power switch, said parallel power switch being controllable for opening and closing.