Dynamic Load Management, Hot Spot and Cable Integrity Management
Subsea cable dynamic load management (DLM)
The device works by increasing line tension on the subsea cable that runs through it, making it ideal for bundled cable installs.
A DLM is suitable for more sensitive cable and can measure line tension from 0 to 5,000kg. Furthermore, a twin pair of tires is attached to a hydraulic cylinder to clamp the two wheels together, and the rotational speed of the wheels is controlled by a disc brake system.
The gadget has a clamping force of 750 kg between the wheels and a line tension of 500 kg. According to the manufacturer, the top wheel has an encoder that measures speed and distance.
Temperature of the power wire
Although uncommon, there have been some reports of power line failures caused by extreme temperatures generated by heavy loads.
This can cause catastrophic cable damage and possibly outages. Every stoppage has a significant impact on revenue.
Temperature monitoring
Temperature may be measured using two methods: point measurements and dispersed measures.
When directly measuring the copper core of the conductor, point measurements can give the most precise technique of monitoring temperature. Direct measurement, on the other hand, is only suitable for safe laboratory applications and is impractical for field installations when the conductor carries large electrical currents. An alternative is to install a temperature sensor on the cable's outer surface.
One significant downside of using point measurements to monitor the temperature of a lengthy wire is that they only detect the temperature at discrete spots. Where there is no sensor, the cable temperature is unknown.
To maximize the value of assets such as electricity lines, they must be used to their full potential. Real-time temperature monitoring allows for the prediction and identification of potential issues like thermal runaway. After that, appropriate action may be made to minimize the burden.
Maximizing power cable utilization: Cables are often rated conservatively, and are frequently rated well below their true capacity. If the temperature is constantly checked, it may be feasible to load a cable above its nominal loading capacity safely.
1. Detection of hot spots: The presence of new hot spots in a cable might signal that circumstances are changing and should be explored.
2. Power overload management: Systems that allow one cable to be safely loaded at a higher rate while another is out of service.
3. Seasonal/yearly patterns may be plotted: Cable temperature data can be compared to historical records.
4. Postponing capital expenditures for new cables.
5. Detecting and detecting cable failures
Submarine cable asset management becomes more intelligent
Submarine connections are crucial in enabling transmission through interconnector or power delivery from offshore wind farms in an increasingly linked and decentralized energy system. Subsea cables, which are laid down in water depths ranging from a few meters to hundreds of meters below sea level, are endangered by harmful equipment such as anchors and fishing gear.
Preventing these types of accidents and being able to handle problems promptly - while reducing downtime - is critical for transmission and off-shore facility owners, who might face serious losses if availability is disrupted.
Join us as we bring together experts, practitioners, stakeholders, and leaders from Europe and around the world to discuss best practices and solutions for maintenance and reliability technical challenges in and around cable design, maintenance and performance management, installation best practices, surveys, fault reduction & monitoring including electrical & thermal faults, risk assessment & error elimination at the initial stage of installation, development, and deployment.
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