Calculation and Analysis of Switch Closing Speed and Short-Circuit Closing Capacity

doi:10.16628/j.cnki.2095-8188.2024.10.003

LOW VOLTAGE APPARATUS ›› 2024, Vol. 0 ›› Issue (10): 19-25.doi: 10.16628/j.cnki.2095-8188.2024.10.003

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Calculation and Analysis of Switch Closing Speed and Short-Circuit Closing Capacity

ZHANG Anming¹, ZHOU Qiang²

1. The First Military Representative Office of Haizhuang Shenyang Bureau Stationed in Dalian, Dalian 116000, China
2. Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd., Shanghai 200063, China

Received:2024-07-25 Online:2024-10-30 Published:2024-12-12

Abstract

Abstract:

Short-circuit closing capacity is an important performance of the switch.The main factors of affecting the short-circuit closing capacity are analyzed.With the method of electro-magnetic simulation and calculation formula,the closing speed and short-circuit closing capacity of the switch are calculated and analyzed.Finally,the feasibility of the design and calculation analysis is verified by the short-circuit closing capacity test of DC 70 kA,which has a great engineering significance.

Key words: closing speed, short-circuit closing capacity, calculation analysis, switch design

CLC Number:

TM564

ZHANG Anming, ZHOU Qiang. Calculation and Analysis of Switch Closing Speed and Short-Circuit Closing Capacity[J]. LOW VOLTAGE APPARATUS, 2024, 0(10): 19-25.

Figures/Tables 13

References 9

[1]	庄稼人, 党晓鹰. 短路关合过程的分析和关合试验方法的论述[J]. 高压电器, 1990(6):10-18.
[2]	卢彦辉, 张银穗, 孙英杰, 等. 1100kV快速接地开关短路关合试验研究[J]. 电工文摘, 2015(3):33-35.
[3]	ALMEN J O, LASZLO A. The uniform-section disc spring[J]. Journal of Fluids Engineering, 2023, 58(4):305-314.
[4]	张英会, 刘辉航, 王德成. 弹簧手册[M]. 北京: 机械工业出版社, 2008.
[5]	卜刚, 高建和, 郭斌, 等. 基于普通碟形弹簧经验公式的计算软件的设计[J]. 机械工程与自动化, 2012(2):9-11.
[6]	孙海涛, 陈德桂, 李兴文, 等. 低压塑壳断路器触头系统三维磁场的可视化分析[J]. 电工技术学报, 2002(4):31-35.
[7]	陆旻, 崔爱强, 周强, 等. 三位置电源转换开关触头系统电动力的分析[J]. 电器与能效管理技术, 2015(23):18-22.
[8]	周安康. 中压真空断路器桥式触头系统电动力的分析[J]. 电器与能效管理技术, 2019(13):35-37,45.
[9]	雷元, 陈程, 李明. 隔离开关触头系统电动力计算及仿真[J]. 船电技术, 2023, 43(10):33-36.

类别	D/mm		d/mm		t/mm		h₀/mm		H₀/mm		f≈0.75h₀
类别	D/mm		d/mm		t/mm		h₀/mm		H₀/mm		F/N	f/mm
1		14		7.2		0.5		0.4		0.9	279	0.3

编号	电流值/A	转矩/(N·m)	霍姆力F_B/N		洛伦兹力F_A/N		弹簧压力F_S/N	接触行程l/mm
编号	电流值/A	转矩/(N·m)	单独	合计	单独	合计	弹簧压力F_S/N	接触行程l/mm
1-1	5 833.33	17.689	-15.90	-58.20	98.27	614.94	145	61.0
2-1	5 833.33	37.723	-13.20		209.57		145
3-1	5 833.33	37.594	-13.20		208.90		145
4-1	5 833.33	17.672	-15.90		98.20		145
1-2	5 833.33	14.188	-16.09	-59.62	94.60	558.40	145	50.6
2-2	5 833.33	27.761	-13.72		185.10		145
3-2	5 833.33	27.663	-13.72		184.40		145
4-2	5 833.33	14.146	-16.09		94.30		145
1-3	5 833.33	7.570	-17.16	-63.92	63.10	405.30	145	41.0
2-3	5 833.33	16.769	-14.80		139.70		145
3-3	5 833.33	16.732	-14.80		139.40		145
4-3	5 833.33	7.574 1	-17.16		63.10		145

类型	数值
弹簧力的功W₄	48.707 2
重力的功W₅	-0.662 3
蝶形弹簧变形能W₆	7.488
刀杆摩擦力的功W₇	32.4

Calculation and Analysis of Switch Closing Speed and Short-Circuit Closing Capacity

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