Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 7-Day Trial for You or Your Team.

Learn More →

An experimental and numerical study to evaluate performance parameters of GIS circuit breaker during low current interruption

An experimental and numerical study to evaluate performance parameters of GIS circuit breaker... AbstractThe basic philosophy of two-stage blast interrupter is combination of self-blast and puffer-interrupter principles. Gas circuit breaker (GCB) with two-stage blast interrupter has two gas chambers. High gas pressure in one chamber generates by using arc energy and in other chamber, by mechanical compression. In such type of breakers, interruption becomes quite difficult at low currents and hence optimization of gas chambers design is essential. In view of above, a numerical program has been developed to calculate SF6 gas pressure-rise in various interrupter volumes and gas flow rates across different passages of interrupter w.r.t. time. To validate model developed in the study, an experimental set-up is established and measured transient gas pressure-rise generated during 420 kV GCB operation. The effect of speed-time characteristics, stroke length and piston diameter on performance parameters of 420 kV GCB model is analyzed. Further, to understand gas flow pattern across insulated nozzle during GCB operation, authors developed a CFX model. By using this numerical model, effect of nozzle profile, gas flow passage areas and profile of gas discharge vents on transient gas pressure and Mach number distribution across inter-electrode gap and gas flow rates through various outlets has been discussed in detail in the paper. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Emerging Electric Power Systems de Gruyter

An experimental and numerical study to evaluate performance parameters of GIS circuit breaker during low current interruption

Download PDF
14 pages

Loading next page...
 
/lp/de-gruyter/an-experimental-and-numerical-study-to-evaluate-performance-parameters-Acknkdb2je

References (10)

Publisher
de Gruyter
Copyright
© 2023 Walter de Gruyter GmbH, Berlin/Boston
ISSN
1553-779X
eISSN
1553-779X
DOI
10.1515/ijeeps-2022-0145
Publisher site
See Article on Publisher Site

Abstract

AbstractThe basic philosophy of two-stage blast interrupter is combination of self-blast and puffer-interrupter principles. Gas circuit breaker (GCB) with two-stage blast interrupter has two gas chambers. High gas pressure in one chamber generates by using arc energy and in other chamber, by mechanical compression. In such type of breakers, interruption becomes quite difficult at low currents and hence optimization of gas chambers design is essential. In view of above, a numerical program has been developed to calculate SF6 gas pressure-rise in various interrupter volumes and gas flow rates across different passages of interrupter w.r.t. time. To validate model developed in the study, an experimental set-up is established and measured transient gas pressure-rise generated during 420 kV GCB operation. The effect of speed-time characteristics, stroke length and piston diameter on performance parameters of 420 kV GCB model is analyzed. Further, to understand gas flow pattern across insulated nozzle during GCB operation, authors developed a CFX model. By using this numerical model, effect of nozzle profile, gas flow passage areas and profile of gas discharge vents on transient gas pressure and Mach number distribution across inter-electrode gap and gas flow rates through various outlets has been discussed in detail in the paper.

Journal

International Journal of Emerging Electric Power Systems – de Gruyter

Published: Aug 1, 2024

Keywords: gas circuit breaker; gas flow rate; gas insulated switchgear; gas pressure-rise

There are no references for this article.