Study of electrostatic field effect in a three-phase gas-insulated busduct with FGM spacer under the effect of protrusion

Abstract

Recently, the defects in Gas-Insulated Busduct (GIB) affect the electric field distribution badly over the spacer length and de-energies the GIB leading to huge loss economically. In this paper, a post type spacer with Functionally Graded Material (FGM) has been designed for a three-phase GIB under protrusion and further electric field stress is minimized by inserting metal inserts. Functionally graded materials are spatially distributed with several filler materials by doping them with different permittivity values to achieve uniform electric field stress. Simulation is carried out with the designed spacer for different voltages and also for different types of FGM gradings. The protrusion effect on the electric field stress is studied with different sizes and the results obtained are presented and analyzed.

KEYWORDS:

• Gas-insulated busduct
• electric field
• FGM
• protrusion
• post type spacer

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Janaki Pakalapati

Janaki Pakalapati was born in Visakhapatnam, A.P., India in 1984. She received her B.Tech degree in Department of Electrical and Electronics Engineering from Raghu Engineering College, Visakhapatnam, India and received her M.E. degree in Power Electronics Drives and Control in Department of Electrical and Electronics Engineering from the Andhra University College of Engineering, Visakhapatnam. She is presently pursuing her Doctoral degree in School of Electronics and Electrical Engineering from Lovely Professional University, Paghwara, Punjab. She is also working as Associate Professor in the Department of Electrical and Electronics Engineering in LENDI Institute of Engineering and Technology, Vizianagaram. Her main research area includes several abnormalities of spacers in Gas Insulated Substations.

Karthick Nagaraj

Karthick Nagaraj completed his M.E. in Power Electronics and Drives and Ph.D. in the field of Inverter Technology. He is working as Associate Professor in Lovely Professional University, India. He is also experienced in Solar Energy Generation and Storage. His current research areas of interest include Grid Integration Distributed Generators, Multilevel Inverter Topologies and Harmonic Estimation.

Gundavarapu Venkata Nagesh Kumar

Gundavarapu Venkata Nagesh Kumar received the B.E. degree from College of Engineering, Gandhi Institute of Technology and Management, Visakhapatnam, India and M.E. degree from the College of Engineering, Andhra University, Visakhapatnam. He received his doctoral degree from Jawaharlal Nehru Technological University, Hyderabad. He is presently working as Professor and Head in the Department of Electrical and Electronics Engineering, JNTUA College of Engineering Pulivendula. His research interests include gas insulated substations, Evolutionary Computation and FACTS devices. He has published research papers in reputed National and International Journals and Conferences.