Study of the Arc Interruption Performance of CO<sub>2</sub> Gas in High-Voltage Circuit Breaker

Guo, Zhendong; Liu, Shungui; Pu, Yunjie; Zhang, Boya; Li, Xingwen; Tang, Feng; Lv, Qishen; Jia, Shenli

doi:10.1109/tps.2019.2904981

Cited by 34 publications

(11 citation statements)

References 28 publications

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“…At present, the arc extinguishing methods include adding ambient gas with excellent arc extinguishing performance [8][9][10], blowing arc out by electromagnetic force [11][12][13], increasing contact breaking speed [14,15], cutting arc with splitter plates [16][17][18], and blasting arc with gas [19,20]. The above research mainly focuses on switching device with the arc in a closed container.…”

Section: Introductionmentioning

confidence: 99%

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Liu

Yang

Guo

et al. 2023

IET Generation Trans & Dist

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The grounding electrode line is an important part of the Ultra high voltage direct current (UHVDC) transmission system. It acts as the channel to conduct the unbalanced current and the grounding current.The arcing horn consists of a pair of electrodes installed in parallel at both ends of the insulator string, which provides a discharge channel for the fault current by an air gap to protect the insulators. In this paper, the voltage and current distributions of the arcing horn were studied when the grounding electrode line was struck by lightning. It is found that the current and voltage gradually decrease along the direction from the converter station to the earth electrode. An active arc extinguishing method based on variable resistance for arcing horn was proposed. An electromagnetic transient simulation model of the grounding electrode line is established based on the electrical parameters of a ±800 kV UHVDC transmission system. It is found that the absorbed energy of the arc extinguishing unit needs to be at least 31.2 and 49.6 kJ when the lightning current is 20 and 50kA, respectively. According to the calculation results, the arcing horn with arc extinguishing unit was developed and tested. The test results verifies that the designed arcing horn can meet the requirements of engineering application.

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Section: Introductionmentioning

confidence: 99%

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Liu

Yang

Guo

et al. 2023

IET Generation Trans & Dist

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“…Among them, the single gas includes dry air, N 2 and CO 2 . The arcing characteristics, arc extinguishing performance and internal fault arcing problems of four different insulating gases: air, SF 6 , CO 2 and N 2 were compared from the perspective of gas arc characteristics in papers [5][6][7]. Through simulation research and experimental verification, paper [8] compared and analyzed the application characteristics of single gas N 2 , CO 2 and dry air in GIS.…”

Section: Introductionmentioning

confidence: 99%

Research on the Temperature Rise Characteristics ofMedium‐VoltageSwitchgear under Different Operation Conditions

Zhao

Huang

et al. 2022

IEEJ Transactions Elec Engng

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Non-member SF 6 is a greenhouse gas. Finding an alternative gas for SF 6 has become an urgent problem in the switch field. In order to explore the feasibility of replacing SF 6 gas with dry air directly, CO 2 and C 4 F 7 N/CO 2 mixed gas, based on the KYN28-12 medium voltage switchgear, the finite element method was used to solve the three-dimensional coupled multi-physics of the switchgear in this paper. From the angle of the temperature field and flow field, the temperature rise characteristics under different operation conditions were analyzed. The results showed that the temperature field and flow field distribution under the four gases were similar. Among them, the temperature rise of SF 6 gas was the smallest, followed by the C 4 F 7 N/CO 2 mixed gas, CO 2 and dry air. The flow rate of SF 6 gas was the lowest, about 0.11 m/s. The flow velocities of other gases were relatively close. When the switchgear was filled with the same gas, as the inflation pressure increased, the temperature rise of the switchgear decreased and the gas flow rate also dropped to a certain extent. The temperature field and flow field of the switchgear under the C 4 F 7 N/CO 2 mixed gas at 0.2 Mpa were similar to those under the 0.1 Mpa SF 6 gas. Under the C 4 F 7 N/CO 2 mixed gas, the contact failure of the plum contact made the temperature rise of the switchgear increase overall. The maximum temperature rise point transferred to the contact failure. The temperature rise further rose with the increase of the contact failure degree. The gas flow rate also greatly increased with the failure degree elevated. From the perspective of temperature rise, the C 4 F 7 N/CO 2 mixed gas has the possibility of being applied in the electrical equipment under the premise of meeting the insulation conditions.

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“…Gas mixtures containing fluoro-nitriles (C 4 F 7 N) or fluoro-ketones (C 5 F 10 O) as minority components (<20 %) have been identified as most promising alternatives to SF in high-voltage gas-insulated switchgear applications, because of their low global warming potential together with their dielectric strength values being comparable to SF 6 [5][6][7]. Due to high boiling points (at 1 bar) of the fluoro-ketones (27 • C) and fluoro-nitriles (-4.7 • C), gas mixtures with carbon dioxide CO 2 as buffer gas prevent liquefaction at temperatures below -30 • C. One of the most promising alternatives that has less limitations concerning temperature range and greenhouse effect but reasonable electrical insulation is CO 2 [8][9][10]. Moreover, some of the experimental techniques and results obtained for CO 2 will be relevant for other alternative gases that are usually applied with CO 2 as buffer gas.…”

Section: Introductionmentioning

confidence: 99%

Ablation-Dominated Arcs in CO2 Atmosphere - Part I: Temperature Determination near Current Zero

Methling¹,

Khakpour²,

Götte³

et al. 2020

Preprint

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Wall–stabilized arcs dominated by nozzle–ablation are key elements of self–blast circuit breakers. In the present study, high–current arcs were investigated using a model circuit breaker (MCB) in CO2 as gas alternative to SF6 and in addition a long polytetrafluoroethylene nozzle under ambient conditions for stronger ablation. The assets of different methods for optical investigation were demonstrated, e.g. high-speed imaging with channel filters and optical emission spectroscopy. Particularly the phase near current zero (CZ) crossing was studied in two steps. In the first step using high-speed cameras, radial temperature profiles have been determined until 0.4 ms before CZ in the nozzle. Broad temperature profiles with a maximum of 9400 K have been obtained from analysis of fluorine lines. In the second step, the spectroscopic sensitivity was increased using an intensified CCD camera, allowing single-shot measurements until few microseconds before CZ in the MCB. Ionic carbon and atomic oxygen emission were analyzed using absolute intensities and normal maximum. The arc was constricted and the maximum temperature decreased from &gt;18000 K at 0.3 ms to about 11000 K at 0.010 ms before CZ. The arc plasma needs about 0.5-1.0 ms after both the ignition phase and the current zero crossing to be completely dominated by the ablated wall material.

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Study of the Arc Interruption Performance of CO₂ Gas in High-Voltage Circuit Breaker

Cited by 34 publications

References 28 publications

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Research on the Temperature Rise Characteristics ofMedium‐VoltageSwitchgear under Different Operation Conditions

Ablation-Dominated Arcs in CO2 Atmosphere - Part I: Temperature Determination near Current Zero

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Study of the Arc Interruption Performance of CO2 Gas in High-Voltage Circuit Breaker

Cited by 34 publications

References 28 publications

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

Research on the Temperature Rise Characteristics ofMedium‐VoltageSwitchgear under Different Operation Conditions

Ablation-Dominated Arcs in CO2 Atmosphere - Part I: Temperature Determination near Current Zero

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Study of the Arc Interruption Performance of CO₂ Gas in High-Voltage Circuit Breaker