Measurement of Arc Temperature in Nozzle of SF<sub>6</sub> Circuit Breaker During Heavy Current Interruptions

WU Junhui; BAI Su; YANG Zhiyong; GUAN Yonggang; LIU Weidong

doi:10.13296/j.1001-1609.hva.2018.02.002

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Measurement of Arc Temperature in Nozzle of SF₆ Circuit Breaker During Heavy Current Interruptions

更新时间：2025-04-26

- Measurement of Arc Temperature in Nozzle of SF₆ Circuit Breaker During Heavy Current Interruptions
- High VoltageApparatus Vol. 54, Issue 2, Pages: 7-11+19(2018)
- 作者机构：
  
  1. 平高集团有限公司
  2. 清华大学电机系电力系统及发电设备控制和仿真国家重点试验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.02.002
  CLC： TM561.3
- Published：2018
- 稿件说明：
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[1]吴军辉,白苏,杨志勇,关永刚,刘卫东.SF_6断路器强电流开断喷管内电弧温度测量[J].高压电器,2018,54(02):7-11+19.

WU Junhui, BAI Su, YANG Zhiyong, et al. Measurement of Arc Temperature in Nozzle of SF₆ Circuit Breaker During Heavy Current Interruptions[J]. High voltageapparatus, 2018, 54(2): 7-11+19.
[1]吴军辉,白苏,杨志勇,关永刚,刘卫东.SF_6断路器强电流开断喷管内电弧温度测量[J].高压电器,2018,54(02):7-11+19. DOI： 10.13296/j.1001-1609.hva.2018.02.002.

WU Junhui, BAI Su, YANG Zhiyong, et al. Measurement of Arc Temperature in Nozzle of SF₆ Circuit Breaker During Heavy Current Interruptions[J]. High voltageapparatus, 2018, 54(2): 7-11+19. DOI： 10.13296/j.1001-1609.hva.2018.02.002.

摘要

研究了SF

断路器强电流开断时

喷管内电弧温度的测量方法。对一台126 kV SF

断路器进行了强电流开断试验

利用光谱仪获取了CuⅠ510.5 nm、CuⅠ515.3 nm、CuⅠ521.8 nm 3处的光谱谱线强度

以双谱线法为基础计算出了电弧温度。为了获得电弧温度的空间分布

将喷管材料换成了透明的有机玻璃

有效地获取了电弧的轴向温度分布。在电弧开断过程中

每间隔1 ms进行一次测量

获得温度的时变规律。由于熄弧前瞬间电弧温度对开断有着重要的影响

因此着重关注了电流过零前1 ms内的电弧温度变化

测量间隔为0.1 ms。基于文中方法

获取了开断过程中以及过零前的电弧温度的变化规律。发现电弧温度在电流过零前要先经过一段比较缓慢下降的过程

再开始迅速下降。缓慢下降过程中

温度与时间的变化基本为线性

下降速度约为300 K/ms。

Abstract

Investigation is performed on the method of arc temperature measurement in SF

circuit breaker’s nozzleduring heavy current interruptions. Tests are conducted with a 126 k V SF

circuit breaker;the measurement is imple-mented by means of spectral method to obtain the spectral line intensity of CuⅠ510.5 nm

CuⅠ515.3 nm and CuⅠ521.8 nm. By using relative intensities lines method obtain the arc temperature. In order to measure the spatial distri-bution of arc temperature effectively

the nozzle is replaced with a transparent organic glass material from a

PTFEmaterial

which leads temperature axial distribution of the arc is effectively obtained. Measurement is performed ateach interval 1 ms during the whole operating process

which obtains the variation low of arc temperature with time.The temperature measurement method established is effective for measuring the temperature variation in the wholeoperating process.

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Measurement of Arc Temperature in Nozzle of SF6 Circuit Breaker During Heavy Current Interruptions

DOI：10.13296/j.1001-1609.hva.2018.02.002

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Measurement of Arc Temperature in Nozzle of SF₆ Circuit Breaker During Heavy Current Interruptions