Cable condition monitoring
Synaptec provides earlier warning of more cable failure modes to avoid outages.
69%* of HV cable failures occur in joints and terminations, which are overlooked by conventional monitoring techniques. Synaptec systems monitor all these inaccessible locations permanently and synchronously to give earlier warning of more failure modes. This is achieved with zero power, zero data, zero maintenance, and zero telecoms sensors monitoring currents, voltages and temperatures at every joint, termination and link box to win operators vital time to intervene and avoid expensive failures. Ask us for more details on how this is done, or download our T&DWorld white paper.
*Source http://www.jicable.org/TOUT_JICABLE/2015_slides/2015-D9-2_slides.pdf
Get in touch
Slava Tavoletti
Power Grids – Europe
Nitin Mahajan
Power Grids – India, GCC & SE Asia
Saul Matthews
Power Grids – Rest of World
Challenges in cable condition monitoring
By their nature, underground power cable systems are difficult and costly to access and inspect. Some automation has been made possible by installing permanent DTS (Distributed Temperature Sensing), and in some rare cases permanent PD (Partial Discharge) monitoring technologies, but these techniques do not provide early warning of failures at every joint, and often miss the root causes of failure. Cable screen continuity and earth faults, flooding, and sheath voltage limiter faults can all occur at bonding locations along the circuit, which are not easily inspected manually or instrumented for permanent, online monitoring.
Our solution
Our passive sensor technology is ideally suited to resolving these challenges, with continuous and synchronous measurements streamed from every cable joint and termination by Synchromerger™. By monitoring cable sheath current using Synaptec’s unique and totally passive Distributed Electrical Sensing (DES) technology, it is possible to provide more accurate circuit modelling data, improving the precision of real-time thermal ratings whilst also monitoring for the root causes of asset failure that lead to sheath and screen damage, overheating, water trees, electrical trees, PD, and eventual flashover.
The addition of phase voltage and current sensing enables the monitoring of electrical transients and harmonic content. Transients from switching sources, capacitor banks, and inductive loads, commonly associated with power electronics can stress circuit components and over time introduce damage. Transients can slowly degrade insulation eventually leading to localised overheating and short circuit currents. Synaptec’s cable condition monitoring technology provides utilities with a totally unique and comprehensive set of asset insights, allowing more failure modes to be monitored for progression and providing actionable insights at significantly earlier stages of degradation.
Download cable condition monitoring white paper
Applications
Mixed circuit protection
OHL sag, ampacity and Dynamic Line Rating (DLR)
Wide area multi-ended differential protection
Digital substations
Cable condition monitoring
Wide area monitoring
Related posts
Solving Complex Feeder Protection Challenges and Reducing Wildfire Risks With Remote Measurements
Following on from the T&D World webinar, we are delighted to share with you our new white paper on 'Solving complex feeder protection challenges and reducing wildfire risks with remote measurements'. In this white paper, we propose a comprehensive and...
Overhead Line Sensor (OHLS)
Synaptec’s fully passive OHLS is seamlessly compatible with our electrical current and voltage sensors and central Interrogators, adding valuable mechanical and environmental insights to any Synaptec condition monitoring system. The OHLS combines proven,...
Mixed Circuit Protection (MCP) using RefaseTM
Synaptec reduces outage and operational costs with the world’s only distributed sensor networks for operators of complex MV-HV power systems. Synaptec’s unique passive sensor arrays allow synchronous and dependably accurate instrumentation of multiple locations over...
Sectors we support
Power grids
Renewables
