Insulated Conductors Committee

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Spring 2012 Insulated Conductors Committee Awards

ICC Certificates of Appreciation

ICC Certificates of Appreciation were presented to the following:

IEEE/PES Technical Committee Certificates of Appreciation

 IEEE/PES Certificates of Appreciation were presented to the following:

Dr. George H. Bahder Memorial Award

Presented To

Nagu Srinivas

For demonstrating the harmful influence of DC high potential testing on aged cross-linked polyethylene insulated cables, stimulating the industry to develop methods for estimating reliability 

131st Meeting of the Insulated Conductors Committee

Grand Hyatt Seattle

Seattle, Washington
March 25-28, 2012

Career Highlights




This work demonstrated that a conventional AC breakdown strength test performed after the AC extruded cable is de-energized was not suitable for quantifying the harmful effect of DC.

This work demonstrated the life-shortening effect of DC testing on laboratory aged extruded XLPE-insulated AC cables. The test procedure required that the cable remain energized during aging.

This work demonstrated that generally accepted DC levels applied to aged XLPE-insulated cables were potentially harmful, and presented a hypothesis that the age of the cable, and subsequent degree of degradation at the time of DC application, is relevant to future performance.

The above publications clarified the influence of DC testing on XLPE insulated cables. Based on the results of this work, Detroit Edison Company revised policies on DC testing of extruded cables, and this led directly to significant cost savings due to reduced maintenance testing and reduced purchasing costs. EPRI provided a first use award. Other utilities have since revised their extruded cable testing practices, and as noted, the entire area of in-situ diagnostic testing has 'blossomed'.

This work demonstrated that the harmful effects of DC when applied to field aged XLPE insulated cables removed from service, and proved that what was learned from studying accelerated aged cables applied to service aged cables.

These two publications provide supporting fundamental information demonstrating that DC application to aged XLPE isulated cables led to space charge trappng.

These publications describe the on-line partial discharge diagnostic technique designed to assess future performance of the entire aged cable system (cables, joints, terminations).

These publications represent work by the candidate on water and electrochemical treeing, and demonstrated the need for water tree resistant materials for cable insulation, subsequently developed by material suppliers and used throughout the industry.

April 10, 2012

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