Power Feed Route Switching Verification by Terminal Voltage Monitoring
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Solution Overview
Problem
In general undersea cable systems, the branching unit (BU) lacks a response function to notify the terminal station of a power feeding route switching result, leading to potential misconfirmation of switching success, requiring manual operator verification and posing safety and efficiency concerns.
Innovation Solution
A communication system with a monitoring device that compares power feeding voltages before and after transmitting a switching signal to determine if the power feeding route has been successfully switched by measuring voltage fluctuations exceeding a threshold value, allowing remote confirmation of switching results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the branching unit does not include a response function to notify the terminal station of switching results, then the device complexity is reduced, but the reliability of confirming switching results deteriorates
Solution Approach 1:
The terminal station transmits a switching signal to the branching unit and monitors the power feeding voltage after transmission. By comparing the voltage before and after the switching signal transmission, the terminal station receives feedback about the switching result without requiring the branching unit to have a response function. This resolves the contradiction by implementing feedback at the terminal station level rather than requiring it in the branching unit structure.
2Measurement precision
If manual operator verification is required to confirm switching results, then the measurement precision of switching status is improved, but the productivity deteriorates due to time consumption and operational complexity
Solution Approach 1:
The terminal station automatically monitors its own power feeding voltage and compares it before and after transmitting the switching signal to determine the switching result. This self-service approach eliminates the need for manual operator verification while maintaining accurate switching status detection, thereby resolving the contradiction between measurement precision and productivity.
Solution Approach 2:
The manual mechanical operation of operators verifying switching results is replaced by an automated electrical measurement system. The terminal station uses voltage monitoring and comparison to automatically determine switching status, substituting human operation with an automated electrical detection mechanism. This improves productivity while maintaining verification accuracy.
3Measurement precision
If operators manually operate power feeding equipment to confirm switching results, then the measurement precision is improved, but the safety deteriorates due to exposure to high-voltage circuits
Solution Approach 1:
The terminal station automatically performs voltage monitoring and switching result determination without requiring operator intervention. The system serves itself by autonomously detecting the switching status through voltage comparison, eliminating the need for operators to physically interact with high-voltage equipment. This resolves the contradiction by maintaining verification precision while removing operators from hazardous environments.
Solution Approach 2:
The power feeding voltage serves as an intermediary parameter that indirectly indicates the switching result. Instead of operators directly observing or measuring switching contacts, the system uses voltage monitoring as an intermediary measurement that safely reflects the switching status without requiring direct contact with high-voltage circuit components. This resolves the safety contradiction while maintaining measurement accuracy.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables remote confirmation of power feeding route switching results, reducing the need for manual operator intervention, improving operational efficiency and safety by accurately determining switching success without relying on transmission logs.
Implementation Method 1
compares power feeding voltages to power feeding paths observed by a plurality of terminal stations before and after transmission of the switching signal
Data Source
AI summary
To be able to check, from a remote location, a switching result of a power supply route, this communication system comprises: a plurality of terminal stations which each have a function of supplying power to a power supply path; a branching device which switches the power supply route, which includes a power supply path; and a monitoring device which, in response to one of the plurality of terminal stations transmitting to the branching device a switching signal specifying the power supply route, compares the voltages of the power supplied to the power supply paths respectively observed by the plurality of terminal stations, before and after transmission of the switching signal, and which, with the compared power supply voltages each having fluctuated by a first threshold or more, determines a switching result of the power supply route in the branching device.