Underground Cable Labelling Conductor for Non-Intrusive Location
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Solution Overview
Problem
Existing methods for locating underground cables require accessing power grid stations, disrupting grid operations, and posing safety risks, which is undesirable and costly.
Innovation Solution
A system comprising above-ground access boxes connected to electric conductors colocalized with underground cables, allowing cable location without disconnecting from the grid, using an insulating layer and optional grounding to send and detect electrical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing methods are used to locate underground cables by accessing power grid stations, then cable location can be achieved, but grid operations are disrupted and safety risks increase
Solution Approach 1:
The system divides the cable identification function into separate segments: the passive labelling means attached to the cable and the active detection equipment at the surface. This segmentation allows location detection without accessing or disrupting the power grid station, as the labelling means carries the identification information passively while the active equipment remains at safe distances above ground
Solution Approach 2:
The labelling means acts as an intermediary element between the underground cable and the surface detection equipment. It carries identification information and can be detected through non-invasive means, serving as a mediator that enables cable location without requiring direct access to the cable or power grid station, thus maintaining grid operation continuity
2Ease of operation
If power grid stations are accessed to locate cables, then cable tracking is possible, but safety risks and authorization requirements increase
Solution Approach 1:
The labelling means serves as a safe intermediary that carries cable identification information without requiring operators to access hazardous power grid stations. The passive nature of the labelling means allows detection through non-invasive electromagnetic fields or other detection methods from safe distances, eliminating the need for direct contact with live electrical equipment
Solution Approach 2:
The system replaces physical access to power grid stations with remote detection methods. Instead of mechanically accessing the station to locate cables, the system uses electromagnetic fields or other non-contact detection methods to identify cable locations through the labelling means, substituting a dangerous mechanical operation with a safer remote process
3Measurement precision
If cables are disconnected from the grid for location purposes, then accurate tracking can be achieved, but service downtime and operational interruptions occur
Solution Approach 1:
The labelling means is attached to the cable during installation or maintenance activities as a preliminary action. This pre-attached identifier enables future location and identification operations to be performed without disconnecting the cable from the grid, as the identification information is already in place and can be detected through passive means
Solution Approach 2:
The system enables continuous operation of the power grid while allowing cable location activities to proceed simultaneously. The passive labelling means can be detected at any time without interrupting power flow or requiring cable disconnection, maintaining the continuity of useful action in the grid while enabling location services
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 safe and efficient cable location without disrupting power grid operations, reducing safety risks and maintenance costs by allowing tracking from external interfaces.
Implementation Method 1
a labelling means comprising an electric conductor; wherein a first end of the labelling means is located in the first access box, notably connected to the first access box, and a second end of the labelling means is located in the second access box, notably connected to the second access box
Data Source
Figure 1
Figure 2a~2c
AI summary
A system (1) for labelling and/or locating an underground cable (10), the system (1) comprising a first access box (5) and a second access box (6); and a labelling means (2) comprising an electric conductor (4); wherein a first end of the labelling means (2) is located in the first access box (5), and a second end of the labelling means (2) is located in the second access box (6); and wherein at least a part of the labelling means (2) is configured to be colocalized or is colocalized with the underground cable (10); the use of the system (1) for locating an underground cable, a kit and a method for locating an underground cable (10).