Monitoring the Winding Hot Spot

When exposed to high temperature, insulating paper found in transformers breaks down and results in a reduction of the useful life of the transformer. Monitoring temperature of the insulating paper via a winding hot spot ensures the insulating paper is not exposed to high temperatures and helps minimize damage.

Conventional methods of monitoring the winding hot spot use calculations to simulate the temperature, but do not measure it. These winding temperature indicators (WTIs) infer the hot spot temperature by measuring the transformer load on a single phase and the surrounding oil temperature and then apply a model. Other issues with the WTIs include a long lag time (up to 5 hours) and actual temperature variance (up to 20 °C).

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LumaSense will be at the IEEE PES T&D Conference – Will you?

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We will be exhibiting a suite of products for the Transmission and Distribution industry at booth 3800 during the 2014 IEEE PES T&D Conference and Exposition in Chicago, IL from April 15-17th.

This is the 50th anniversary of the conference and will showcase the technologies, products, companies, and minds that will lead the industry through the next 50 years and beyond.

We understand that the power industry is facing challenges with aging equipment and needs technologies like online dissolved gas monitoring. Other technologies, such as fiber optics, pyrometry, and thermal (infrared) imaging help utilities monitor critical elements.

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