26th National Symposium on Cryogenics and Superconductivity

22-24 February 2017

VECC

Home > Timetable > Session details > Contribution details

Experimental Investigations on Power frequency Electrical Breakdown Characteristics of Liquid Nitrogen for HTS power devices

Content:

Recent developments in High Tc Superconducting (HTS) materials are encouraging the development of HTS based power devices which can operate at temperatures around 77 K. Due to the cheaper cost and abundant availability, many of the HTS based power devices i.e. HTS Cables, HTS Transformers, HTS Fault Current Limiters and HTS Motors are designed considering Liquid Nitrogen (LN2) as the cryogen. The LN2 serves as cryogen for cooling the HTS tapes and also acts as good insulating material for High voltage operations.The Electrical Breakdown characteristics of LN2 are one of the essential parameters for designing the HTS based power devices. In the present work, to evaluate the breakdown strength of LN2 at power frequency (50 Hz), a test setup was designed and developed for characterizing the power frequency breakdown strength of LN2 at atmospheric pressure using standard test procedures and the results are presented.

Id:

123

Place:

VECC

1/AF, Bidhan Nagar Kolkata - 700008

Room: Hall A (Main Auditorium)

Starting date:

24-Feb-2017

12:15 (Asia/Kolkata)

Duration:

15'

Contribution type:

Contributory Talk

Primary Authors:

Mr. MURALIDHAR BATHULA, VAS (Corporate R & D, BHEL, Vikasnagar, Hyderabad - 500093, India)

Co-Authors:

Dr. SUDHEER, T. (1Applied Superconductivity Laboratory, Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur)
Dr. CHAWDHURY, UK (Corporate R & D, BHEL, Vikasnagar, Hyderabad - 500093, India)
Prof. RAO, V.V. (1Applied Superconductivity Laboratory, Cryogenic Engineering Centre, Indian Institute of Technology, Kharagpur)

Presenters:

Mr. MURALIDHAR BATHULA, VAS

Included in session:

Technical Session 10

Included in track:

Electrical and Power Applications