Green Gas for a Grid as An Eco-Friendly Alternative Insulation Gas to SF6: From the Perspective of Partial Discharge Under AC

Autor: Gyung-Suk Kil, Guoming Wang, Woo-Hyun Kim, Jae-ryong Jung, Sung-Wook Kim
Rok vydání: 2019
Předmět:
Materials science
020209 energy
Enclosure
02 engineering and technology
lcsh:Technology
01 natural sciences
lcsh:Chemistry
discharge characteristics
0103 physical sciences
0202 electrical engineering
electronic engineering
information engineering
General Materials Science
lcsh:QH301-705.5
Instrumentation
010302 applied physics
Fluid Flow and Transfer Processes
lcsh:T
business.industry
Process Chemistry and Technology
General Engineering
lcsh:QC1-999
Computer Science Applications
Conductor
partial discharge
lcsh:Biology (General)
lcsh:QD1-999
lcsh:TA1-2040
Frequency domain
Electrode
Partial discharge
Optoelectronics
eco-friendly insulation gas
Electric power
green gas for grid
SF6 alternative
lcsh:Engineering (General). Civil engineering (General)
business
lcsh:Physics
Pulse-width modulation
Voltage
Zdroj: Applied Sciences, Vol 9, Iss 4, p 651 (2019)
Applied Sciences
Volume 9
Issue 4
ISSN: 2076-3417
DOI: 10.3390/app9040651
Popis: This paper deals with the characteristics of partial discharge (PD) in green gas for a grid (g3), which is thought to be a promising eco-friendly alternative to substitute SF6 used in electrical power facilities and to reduce the greenhouse effect. g3 gas with 4% NOVECTM 4710/96% CO2 was used and electrode systems including a protrusion on conductor (POC) and a protrusion on enclosure (POE) were fabricated to simulate PD in a gas-insulated structure. PD characteristics in terms of partial discharge inception voltage (PDIV), pulse parameters in time and frequency, and the phase-resolved partial discharge (PRPD) pattern in SF6 and g3 were compared. From the results, the PDIVs of g3 were 76%&ndash
81% of that of SF6 in the POC and were 78%&ndash
84% of that of SF6 in the POE, depending on the gas pressure. Rising time, pulse width, and relative amplitude in the frequency domain of PD pulses in g3 gas were greater than those in SF6. In addition, the PRPD patterns indicated that both the average apparent charge and pulse count of PD in g3 were higher compared with those in SF6. The results from this paper are expected to provide fundamental material for the green manufacturing of gas-insulated power apparatus.
Databáze: OpenAIRE
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