Online Partial Discharge Monitoring of Power Cables

Partial discharge (PD) is a common sign of insulation breakdown in power cables and cable accessories, such as joints and terminations, which can eventually result in cost-intensive repairs and prolonged outages. PD can be the result of internal weak spots in cable insulation, such as voids, cracks or particles. PD is also caused by damage to cables or to joints and terminations during installation.

With suitable sensors, PD activity can be monitored and trended either on a temporary or permanent, continuous basis during the operating life of the equipment. The terminations and joints of the cable system are typical PD measurement points. Powerful noise suppression and PD source separation algorithms are used to reliably localize harmful PD phenomena in the cable system.

Solutions

Temporary Partial Discharge Monitoring on Power Cables

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Temporary Partial Discharge Monitoring on Power Cables

Temporary partial discharge (PD) monitoring systems are used to periodically assess PD activity in power cables via their joints and terminations over specified periods of time. It provides you with continuous insulation condition status of power cables while they are in operation and under the influence of deteriorating forces. Warnings and alarms are triggered when user-defined PD threshold levels have been exceeded, so that you can diagnose the situation with off-line PD measurements and plan timely condition-based maintenance.

Permanent Partial Discharge Monitoring on Power Cables

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Permanent Partial Discharge Monitoring on Power Cables

Permanent partial discharge (PD) monitoring systems are used to assess developing PD activity over the entire service life of power cables. Warnings and alarms are triggered when user-defined PD threshold levels are exceeded. Through trended PD activity and assessment of insulation condition over time, you can decide if and when it is necessary to schedule downtime and perform maintenance to prevent pre-mature failures.

Products for Online Partial Discharge Monitoring of Power Cables

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MONTESTO 200 – Easy on-line partial discharge measurement and monitoring

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