Jan 2015
Electricity Transmission
Partial Discharge Monitoring to Reduce Safety Criticality
Jan 2015
Apr 2020
Scottish and Southern Electricity Networks and Scottish Hydro Electric Transmission
SSEN Future Networks Team
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Network Innovation Allowance
ET - Network improvements and system operability, ET - Safety and health and environment
Asset Management, Measurement and Substation Monitoring
To install online trial PD monitoring systems incorporating alternative technologies and suppliers at selected sites and integrate with SHE Transmission’s SCADA system in order to collect, store and analyse output PD event data to establish if this can be used to improve the management of safety critical plant. Learning from this project will also be used for further work to incorporate PD failure precursors into control and protection schemes.

The overall objective of the project is to identify an economic solution to reducing asset criticality. This will be achieved through the following activities:
• Deployment of a continuous PD monitoring system at selected substations and monitoring the systems for at least 18 months to identify and understand excursions from expected levels of PD  through all ambient and operational conditions
• Delivery of tools for simplifying output PD data interpretation and compilation of suitable procedures for actions in event of alarms

• Review of technical confidence and effectiveness of the trial systems with other approaches to reduce asset criticality.

The project will be considered a success if it can determine the viability of continuous PD monitoring as a tool for management of safety critical assets on the network.