Indoor Substation Environments
Electricity North West Limited
Electricity North West Innovation Team
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Innovation Funding Incentive
High Voltage Technology
The work of the Partial Discharge (PD) Users Group has established a
demonstrable link between partial discharge activity and substation
environment particularly with regard to relative humidity and these
phenomena are particularly detrimental to primary substation equipment that
employs polymeric insulation materials.
This project employed a semi-permanent partial discharge monitor supplied
by EA Technology (EATL) that can monitor and record surface partial
discharge (ultrasonic), internal partial discharge (TEV), temperature and
relative humidity in three indoor substation locations known to suffer from
high levels of humidity.
The specific aim of the project is to further research the potential link
between environment and partial discharge activity and to trial the cost
effectiveness and practicality of remote partial discharge monitoring of
substation equipment on the Electricity North West network.