The document analyzes and compares the movement of metallic particles in SF6/N2, SF6/CO2, and SF6/Air gas mixtures used in gas insulated substations. It finds that SF6 has a nonlinear breakdown strength affected by metallic particles, and is also a greenhouse gas. Alternative gas mixtures are needed. The paper presents results on particle movement in these three gas mixtures as potential SF6 alternatives with good dielectric properties.

1. Dynamics of Metallic Particle movement in a Gas
Insulated Substation Employing SF6/N2, SF6/CO2
and SF6/Air Dielectric Gas Mixtures
Mr. P Srinath Rajesh1, Dr.J Amarnath 2,
1 Department of EEE, Adams Engineering College, Paloncha, India.
2 Department of EEE, JNTUH College of Engineering, Hyderabad, India.
1www.icgst.com
http://www.icgst.com/paper.aspx?pid=P1111440346

2. From the past studies the breakdown strength of SF6 is exceptionally subjected to
nonlinear electric fields in conjunction with metallic particles, consequently this
effects provokes drop in the breakdown strength beyond its limits. In addition to
this the SF6 gas is a hothouse gas rouse the global warming, employing this gas is
extremely undesirable. As a consequence there is a need to find alternate solution
to this gas one such alternative is to use gas mixtures such as SF6/N2, SF6/Air,
SF6/CO2, SF6/Kr, SF6/Ar having supreme dielectric characteristics. In this paper
Metallic Particles movement is analyzed, compared and presented the results of
SF6/N2, SF6/CO2 and SF6/Air gas mixtures in a Single Phase Gas Insulated
Substation.
2www.icgst.com
http://www.icgst.com/paper.aspx?pid=P1111440346
Dynamics of Metallic Particle movement in a Gas Insulated Substation Employing
SF6/N2, SF6/CO2 and SF6/Air Dielectric Gas Mixtures
Abstract

3. 3www.icgst.com
J. Amarnath obtained the B.E degree in electrical engineering from Osmania University,
Hyderabad, A.P. India in 1982 and the M.E. degree in power systems from Andhra University,
Visakhapatnam in1984. He worked in Tata Electric Company, Bombay during 1985-1986. In 1987
he was a Lecturer in Andhra University for a period of 2 years and then he joined in Nagarjuna
University for a period of 4 years as Lecturer. In 1992 he joined JNTU College of Engineering,
Kukatpally, Hyderabad. Presently he is professor and head of the department of Electrical and
Electronics engineering department, JNTU, Hyderabad, A.P. He presented more than 250
research papers in national and international conferences. His research interests includes high
voltage engineering, gas insulated substations, industrial drives, power electronics, power
systems, microprocessors and microcontroller applications to power systems and industrial
drives.
Jawaharlal Nehru Technological University Hyderabad
Kukatpally, Hyderabad - 500 085, Telangana, India http://www.jntuh.ac.in/new/

4. 4www.icgst.com
Mr Srinath Rajesh Papineni was born at Bhadrachalam, Andhra Pradesh, India on 20th
Auguest, 1982. He received B.Tech (2003) from JNTU Hyderabad, M.Tech (2006) from
Koneru Lakshmaiah College of Engineering, Acharya Nagarguna University. At present
he is pursuing Ph.D in JNTU Hyderabad in the area of High Voltage Engineering (Gas
Insulated Substations). He was also member of IEEE and IEI societies.He has published
in more than 15 National and International conferences in the areas of High voltage
Engineering, Power Systems, Power Electronics and FACTS .At present he working as
Associate professor,EEE Dept ,Adam’s Engineering college Paloncha,A.P.,India
Adam’s Engineering college
http://www.adamsenggcollege.ac.in/

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