Study on Arc Behavior in Process of Blocking DC Fast Interrupting

doi:10.16628/j.cnki.2095-8188.2020.09.001

Abstract

Abstract:

The development of the arc in the narrow insulation gap is studied by means of the DC interrupting impulse test circuit.Meanwhile,by means of the blocking DC fast interrupting device,the influence of the section perimeter,width,height and effective length of the narrow insulation gap on the arc characteristics is analyzed.Finally,the influence law of the parameters of the insulation narrow gap on the arc characteristics is obtained,which provides ideas and experimental basis for the further development of the barrier DC interrupting method and the design of the improved device.

Key words: DC circuit breaker, insulation slit, development of arc, blocking DC interrupt

CLC Number:

TM501+.2

PENG Haibo, LI Lingxiao. Study on Arc Behavior in Process of Blocking DC Fast Interrupting[J]. LOW VOLTAGE APPARATUS, 2020, 594(9): 1-6.

Figures/Tables 18

References 7

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参数	数值	参数	数值
U_S/V	500	U_C/V	1 000
I/A	1 500	h/mm	10
τ/ms	5	b/mm	2

绝缘窄缝尺寸		电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	上升时间 t/ms
b/mm	h/mm	电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	上升时间 t/ms
1.0	15	560.97	814.4	3.62
1.5	10	528.70	766.4	4.27
3.0	5	557.40	588.3	4.52

绝缘窄缝尺寸		电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	电弧电压上升率 δ/(V·ms^-1)	上升时间 t/ms
b/mm	h/mm	电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	电弧电压上升率 δ/(V·ms^-1)	上升时间 t/ms
1.0	10	574.8	854.8	223.2	3.83
1.5	10	528.7	766.4	179.5	4.27
2.0	10	551.4	625.6	127.7	4.90

绝缘窄缝尺寸		电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	电弧电压上升率δ/ (V·ms^-1)	上升时间 t/ms
b/mm	h/mm	电弧电流 I_{arc_max}/A	尖峰燃弧电压 U_{arc_max}/V	电弧电压上升率δ/ (V·ms^-1)	上升时间 t/ms
2	5	507.04	800.2	199.1	4.02
2	10	551.40	625.6	127.7	4.90
2	15	631.84	456.4	101.1	4.52