Theoretical Analysis on Withstanding Short Circuit Discharge Test and Inrush Current Capacity of Internal Fuse

MEI Zhong-yuan; SHI Hai-yang; FU Da-zhi

doi:10.14044/j.1674-1757.pcrpc.2011.01.005

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Theoretical Analysis on Withstanding Short Circuit Discharge Test and Inrush Current Capacity of Internal Fuse

更新时间：2024-09-14

- Theoretical Analysis on Withstanding Short Circuit Discharge Test and Inrush Current Capacity of Internal Fuse
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 32, Issue 1, Pages: 38-44(2011)
- 作者机构：
  
  青岛恒顺电器有限公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2011.01.005
  CLC： TM531.4
- Published：2011，
- 稿件说明：
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[1]梅中原,史海洋,付大志.内熔丝耐受短路放电试验和涌流能力的理论分析[J].电力电容器与无功补偿,2011,32(01):38-44.

MEI ZHONG-YUAN, SHI HAI-YANG, FU DA-ZHI. Theoretical Analysis on Withstanding Short Circuit Discharge Test and Inrush Current Capacity of Internal Fuse. [J]. Power capacitor & reactive power compensation, 2011, 32(1): 38-44.
[1]梅中原,史海洋,付大志.内熔丝耐受短路放电试验和涌流能力的理论分析[J].电力电容器与无功补偿,2011,32(01):38-44. DOI： 10.14044/j.1674-1757.pcrpc.2011.01.005.

MEI ZHONG-YUAN, SHI HAI-YANG, FU DA-ZHI. Theoretical Analysis on Withstanding Short Circuit Discharge Test and Inrush Current Capacity of Internal Fuse. [J]. Power capacitor & reactive power compensation, 2011, 32(1): 38-44. DOI： 10.14044/j.1674-1757.pcrpc.2011.01.005.

摘要

对高压并联电容器内熔丝耐受短路放电试验和合闸涌流的能力进行了全面的理论分析。重点分析了过渡过电流及其引起的发热能量、内熔丝熔断能量、内熔丝的升温及降温

给出了详细的计算公式。指出过渡过电流引起熔丝发热的能量与其串联的元件容量成正比

与过渡过电流的大小形状无关。短路放电试验中每一次的瞬态发热能量是合闸涌流发热能量的3.125倍。从瞬态发热能量和升温的角度看

内熔丝电容器只要能够耐受短路放电试验

也就能够耐受合闸涌流而不会损坏。

Abstract

The fuse endured ability which to the high-pressured shunted capacitor in the short circuit discharge test and switched on flows rapidly to carry on the comprehensive theoretical analysis The selective analysis had transited the electric current and causes gives off heat the energy The comprehensive theoretical analysis on withstanding short circuit discharge test and inrush current capacity in closing operation in the high voltage shunt capacitor is conducted

mainly in the analysis of transient over current and its caused give off the heating energy

fusing energy of internal fuse

temperature rise and fall

and calculation formula is given in detail.It is pointed out that the heating energy of fuse due to transient over current is proportional to the capacity of elements in series with it and independence of the size and shape of transit overcurrent.In the short circuit discharge test each time the transient heating energy is 3.125 times that of inrush current in closing operation.From the view of transient heating energy and temperature rise

once the internal fuse capacitor can withstand the short circuit discharge test

it can be able to withstand inrush current in closing operation without any damage.

关键词

高压并联电容器内熔丝短路放电涌流发热能量

Keywords

high voltage shunt capacitorinternal fuseshort circuit dischargeinrush currentheating energy

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