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Reporting from CIGRE

PPC Insulators

Investigating Polymeric Housings Using the Inclined Plane Test

CIGRE Working Group D1.27 was charged with investigating polymeric materials used as external housings for insulators, arresters, bushings, instrument transformers, etc. This topic is now of growing importance given greater demand for such equipment and... Read More

Progress Standardizing Recommended Creepage in DC

Today’s demand for integrating renewables into energy supply has made HVDC transmission a much more interesting option than in the past. This is triggered by factors such as that HVDC systems may be less expensive in terms of required equipment investment... Read More

Insulators for DC Line Applications

When it comes to DC line applications, there are ‘pure’ DC connections and also ‘hybrid’ connections – the latter being a solution to replace an AC system on an existing line route with a DC bi-pole to increase transmission capacity. While it is now... Read More

Preview of 2018 CIGRE

A review of the program for the upcoming CIGRE General Session in Paris suggests record attendance, with more than 8000 participants expected from 93 countries. In addition, some 240 exhibitors will display new products, services and technologies over three... Read More

Protecting Composite Insulators from Corona

One of the important design differences between silicone composite insulators and porcelain cap & pin or long rod types is their smaller shank diameter, made possible by the high strength glass-fibre reinforced core rod. This contributes to superior... Read More

Detecting Corona with UV Cameras

Currently, CIGRE WG D1.61 is dealing with the topic of optical detection and measurement of corona. Several ultraviolet (UV) cameras are now available commercially (both night vision and daylight types) and there is ongoing discussion about whether optical... Read More

Dealing with Deterioration of Silicone Insulation in Critical Applications

Field experience with composite insulators having polymeric housings is available now for about 40 years and the clear trend is that silicone rubber has become the material of choice. The main reason is its long-term, dynamic hydrophobicity, which can... Read More