Technical Papers Partial Discharge Deployment Of Distributed On-Line Partial Discharge Monitoring Devices On Medium Voltage Electricity Networks
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| Deployment Of Distributed On-Line Partial Discharge Monitoring Devices On Medium Voltage Electricity Networks |
| Written by Lee RENFORTH, Ross MACKINLAY, Malcolm SELTZER-GRANT | |||
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This paper describes the development and deployment of new portable on-line partial discharge (PD) monitoring devices for the condition monitoring of medium voltage (MV) cables and switchgear. In order to provide a complete MV network monitoring solution, devices for monitoring of PD at both primary and secondary substations are necessary. The authors describe the technologies and methodologies which have been developed to enable complete network monitoring to be achieved in both small and largeMV distribution networks. With such technologies in place it is possible for the PD activity on a particular item of plant to be measured over a short periods of time (days/weeks/months) with advanced diagnosis and PD location carried out as a follow up, if and when required. The distributed monitoring devices which are used at secondary substations can assist in testing longer circuits (>1.5km in length) which cannot be solely monitored at primary substations due to the effects of PD signal attenuation on the cables. Precedence-based data capture with multiple PD sensors has also been applied for use at secondary substations which is of particular use in determining which circuit the PD is on and which direction the PD activity is coming from. Download full paper here (236KB PDF) Download Poster here (706KB PDF)
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