Power Supply Path-Switching Device for Submarine Cable Systems
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Solution Overview
Problem
Submarine cable systems face disruptions in light signal transmission due to power supply failures, as existing solutions require power from branch stations during normal operations, which is not necessary and inefficient.
Innovation Solution
A power supply path-switching device and method that switches between power supply lines using a power consumption circuit, grounding means, and switching means to maintain power to unaffected equipment without providing power to the branch station side during trunk station failures, ensuring continuous operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one-side power supply from B-station is performed by grounding A-station power supply line and connecting C-station power supply line, then transmission and reception of light signal can be continued between B-station and C-station, but it requires providing power supply function at C-station which is used only during failure
Solution Approach 1:
The power consumption circuit at the branch station automatically detects power supply line failures and generates control signals to switch between power supply modes without requiring active power supply function or manual intervention. The circuit serves itself by using the failed power line's grounding state to trigger the switching mechanism.
Solution Approach 2:
The power consumption circuit is pre-configured with switching means and control logic that automatically activates upon detecting a power supply line failure. The grounding means and switching paths are prepared in advance, enabling immediate transition to one-side power supply mode when needed.
2Reliability
If both-side power supply from A-station and B-station is performed during normal operation, then power supply reliability is improved, but power consumption increases and equipment complexity increases
Solution Approach 1:
The power supply system dynamically switches between two-side power supply mode during normal operation and one-side power supply mode during failure. The switching means and control signals enable the system to adapt its power consumption characteristics based on operational conditions, reducing power usage when full redundancy is not required.
3Productivity
If power supply line is grounded and switching is performed to maintain power to unaffected equipment, then equipment utilization is maximized, but switching control complexity increases
Solution Approach 1:
The power consumption circuit automatically generates control signals for switching means based on the grounding state of power supply lines, eliminating the need for external control systems or complex switching logic. The circuit itself serves as the control brain, simplifying the overall switching control architecture.
Data Source
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AI summary
In order to provide a power supply path-switching device, a power supply path-switching system, and a power supply path-switching method with which it is possible to utilize to the maximum equipment in which a failure has not occurred without imparting a power supply function to a branch station side even when a failure has occurred in the power supply function of the trunk station side, a power supply path-switching device (10) is provided with a first switching means (20), a second switching means (30), a grounding means (40), and a power consumption circuit (50) that operates by being supplied with the power supply. When a failure occurs in a first power supply line (61), the power consumption circuit (50) grounds the first power supply line (61), one end of the power consumption circuit (50) being connected to the grounding means (40) and a second power supply line (62) being connected to the other end of the power consumption circuit (50). When a failure occurs in the second power supply line (62), the power consumption circuit (50) grounds the second power supply line (62), the first power supply line (61) being connected to one end of the power consumption circuit (50) and the other end of the power consumption circuit (50) being connected to a grounding means (24).