About
Power transformers must be operational for decades, especially with lead times for new units extending years out from order dates. Ensuring a transformer is safely and efficiently functioning can be determined by insulation paper degradation which is negatively impacted by ambient air leaks. Detecting air ingress is essential to maintaining the lifespan of a transformer particularly under higher loads. It is critical that transformer maintenance teams and managers ensure the airtightness of transformer tanks through straightforward methods to mitigate the risk of premature aging and failure.

Join this expert-led webinar to learn how total gas pressure (TGP) integrated with real-time DGA provides an ideal solution for decision-makers. We’ll share how the combination of these two measurements is superior to actual O2 and N2 concentration information in assessing whether the insulation system is exposed to oxygen and creating an appropriate response plan for repairing the sealing system and oil degassing.

Both traditional and innovative techniques for detecting air leaks in power transformers will be shared. While traditional methods have been effective to some extent, they may lack simplicity or precision. In contrast, the TGP method combined with online DGA monitoring offers a straightforward yet comprehensive approach to assessing the airtightness of transformer tanks. This claim will be supported with data from various use cases to highlight that TGP can enhance the ability to efficiently detect and mitigate air leaks, ultimately improving the reliability and lifespan of power transformers in their infrastructure.
Agenda
  • Understand the aging mechanism of insulation and how it impacts transformers.
  • Define the transformer sealing system that is critical to avoiding leaks.
  • Compare the value of Total Gas Pressure (TGP) to traditional leak detection methods.
  • Realize use cases where TGP combined with DGA can safely extend transformer lifespans
Presenters
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Senja Leivo
Senior Industry Expert, Vaisala Power Solutions
Senja Leivo is a Senior Industry Expert at Vaisala in Finland, specializing in the condition monitoring of power transformers. With 25 years of international industrial experience, she plays a crucial role in integrating customer feedback into the company’s research and product development. Notably, she has been a key contributor to the development of Vaisala’s multi-gas DGA monitor.

Senja is an experienced speaker at industry conferences and has authored numerous publications in her field. Actively engaged in various international research collaborations, she is a member of CIGRE working groups, IEC maintenance teams, and other initiatives focused on transformer condition assessment. Serving as the Finnish representative and regular member of CIGRE Study Committee D1 from 2020 to 2024, Senja actively shapes industry guidelines and standards.

With a Master of Science degree in Materials Science and Engineering, she possesses a solid academic background complementing her extensive practical experience.
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Aaron Larson
Executive Editor, POWER magazine
Aaron Larson joined the POWER team in September 2013 as an associate editor and was named executive editor in 2017. Aaron has a bachelor’s degree in nuclear engineering technology and a master’s degree, specializing in finance. He spent 13 years in the U.S. Navy nuclear power program, advancing to Chief Petty Officer. He has worked at commercial nuclear, biomass, and coal-fired power plants, functioning in operations, maintenance, safety, financial, and management capacities. Aaron holds a Chief A Engineer boiler operator license in the state of Minnesota.
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