Electrical Breakdown of Long Gaps in Sulfur Hexafluoride

Nitta, T.; Shibuya, Y.

doi:10.1109/tpas.1971.292848

Cited by 77 publications

(26 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SF 6 breakdown is therefore only possible at relatively high field strengths. Good agreement is achieved between the experimental data for SF 6 (circles) taken from [26] and the theoretical prediction obtained by using 6) (line). In order to demonstrate differences between reduced field for air and SF 6 the experimental data for air [26] are shown by circles.…”

Section: Resultssupporting

confidence: 66%

“…There are very few attempts to model gas breakdown in SF 6 , especially in micron scale gaps. The obtained simulation results for the breakdown voltage show a good agreement with the available experimental data [26,27] as well as with the theoretical predictions. Based on the determined breakdown voltage curve, the effective yield of SF 6 has been estimated representing one of the crucial parameters in modelling.…”

Section: Introductionsupporting

confidence: 83%

“…For low pressures, the electrical discharge characteristics of SF 6 are discussed in relation to the field dependence of the ionization coefficient and the electron attachment coefficient leading to a good agreement with the experimental results [23][24][25]. The concept of breakdown at a certain value of the reduced electric field E /p (electric field to the pressure ratio) in SF 6 previously observed experimentally has been established theoretically [26].…”

Section: Introductionsupporting

confidence: 60%

“…For α >η, x c is taken to be the gap length. It was shown that the effective ionization coefficient of SF 6 can be approximated by the expression [26]:…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…Beside the Paschen law, the breakdown voltage in SF 6 can be predicted by a simple expression describing the linear dependence of the breakdown voltage on the pd product (pressure times the gap spacing) derived in [26]. Based on the experimental conditions we also performed Particle-in-Cell/Monte Carlo simulations.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Radmilović-Radjenović¹,

Radjenović²

2017

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This paper contains results of the theoretical studies of the electrical breakdown properties in sulfur hexafluoride. Since the strong interaction of high-energy electrons with the polyatomic sulfur hexafluoride molecule causes their rapid deceleration to the lower energy of electron capture and dissociative attachment, the breakdown is only possible at relatively high field strengths. From the breakdown voltage curves, the effective yields that characterize secondary electron productions have been estimated. Values of the effective yields are found to be more consistent if they are derived from the experimentally determined values of the ionization coefficient and the breakdown voltages. In addition, simulations were performed using an one-dimensional Particle-in-cell/Monte Carlo collision code. The obtained simulation results agree well with the available experimental data with an error margin of less than 10% over a wide range of pressures and the gap sizes. The differences between measurements and calculations can be attributed to the differences between simulation and experimental conditions. Simulation results are also compared with the theoretical predictions obtained by using expression that describes linear dependence of the breakdown voltage in sulfur hexafluoride on the pressure and the gap size product.

show abstract

Section: Resultssupporting

confidence: 66%

Section: Introductionsupporting

confidence: 83%

Section: Introductionsupporting

confidence: 60%

“…For α >η, x c is taken to be the gap length. It was shown that the effective ionization coefficient of SF 6 can be approximated by the expression [26]:…”

Section: Theoretical Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Radmilović-Radjenović¹,

Radjenović²

2017

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

show abstract

Zu einigen technischen Problemen des Plasmas bei elektrischen Isolierungen

Mösch

1982

Contrib Plasma Phys

View full text Add to dashboard Cite

Gas discharges are of great importance for the electrical insulation technique. The technological task comprises the avoidance of plasma in any stresses (electrical, thermal, mechanical, chemical, etc.) occuring in practical service. In order t o be able to give constructional and technological advice for the development, construction, production and operation of electrical insulations, therefore, the physical phenomena of the breakdown of gases have to be known.The engineer's working method is demonstrated by fundamental results on the breakdown of high-voltage insulations with sulphur hexnfluoride and on the flashover of overhead insulators. Zusammenf assungFur die elektrische Isoliertechnik Bind Gasentladungen von groI3er Bedeutung. Die technische Sufgabe besteht darin, ein Plasma bei allen im praktischen Betrieb auftretenden Beanspruchungen (elektrisch, thermisch, mechanisch, chemisch usw.) zu vermeiden. Um konstruktive und technologische Hinweise fur Entwicklung, Konstruktion, Fertigung und Betrieb von elektrischen Isolierungen geben zu konnen, mussen deshalb die physikalischen Erscheinungen beim Gasdurchschlag bekannt sein.An Hand von Forschungsergebnissen vom Durchschlag von Hochspannungsisolierungen mit Schwefelhexafluorid und vom Uberschlag lilngs der Oberflache von Freileitungsisolatoren wird die Arbeitsmeise des Technikers demonstriert.

show abstract

Problems of the application of N₂/SF₆ mixtures to gas‐insulated bus

Inami

Maeda

Habuchi

et al. 2001

Electrical Engineering Japan

View full text Add to dashboard Cite

In designing a gas-insulated bus (GIB) using N 2 /SF 6 mixtures, there are many application problems, such as the mixture pressure needed in order to maintain the required dielectric and heat transfer performance. Problems of recycling SF 6 are also essential in applying N 2 /SF 6 mixtures. This paper presents the minimum breakdown field strength at lightning impulse and the temperature rise of the conductor and enclosure as measured for N 2 /SF 6 mixtures. Considering the dielectric and heat transfer properties, we clarify the problems of application of mixtures to a GIB and discuss the appropriate mixture ratio of SF 6 in designing a GIB comparable to the present dimensions. In addition, the lowest limit of SF 6 content in a liquefied recovering method is theoretically estimated for reference in practical SF 6 recovery from mixtures. It is important for design to consider both breakdown phenomena, including the area effect of electrode, and the heat transfer properties of mixtures.Key words: SF6; N 2 /SF 6 mixtures; breakdown field strength; area effect of electrode; heat transfer property; SF6 recovery.

show abstract

Electrical Breakdown of Long Gaps in Sulfur Hexafluoride

Cited by 77 publications

References 9 publications

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Zu einigen technischen Problemen des Plasmas bei elektrischen Isolierungen

Problems of the application of N₂/SF₆ mixtures to gas‐insulated bus

Contact Info

Product

Resources

About

Electrical Breakdown of Long Gaps in Sulfur Hexafluoride

Cited by 77 publications

References 9 publications

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Theoretical Studies of the Electrical Discharge Characteristics of Sulfur Hexafluoride

Zu einigen technischen Problemen des Plasmas bei elektrischen Isolierungen

Problems of the application of N2/SF6 mixtures to gas‐insulated bus

Contact Info

Product

Resources

About

Problems of the application of N₂/SF₆ mixtures to gas‐insulated bus