Research on Ablation Characteristics of Copper-tungsten Arc Contacts of High-voltage Circuit Breakers Based on Optical Measurement System

NIU Bo; YANG Dingge; CHU Jifeng; WANG Zhixiang; LI Xia; YUAN Fuxiang; HE Jihou; WU Bing; ZHANG Cunjun; NAN Meixuan; YANG Aijun

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Research on Ablation Characteristics of Copper-tungsten Arc Contacts of High-voltage Circuit Breakers Based on Optical Measurement System

更新时间：2025-06-18

- Research on Ablation Characteristics of Copper-tungsten Arc Contacts of High-voltage Circuit Breakers Based on Optical Measurement System
- High Voltage Apparatus Pages: 1-8(2025)
- 作者机构：
  
  1.国网陕西省电力有限公司电力科学研究院，西安　 710100
  2.西安交通大学电力设备电气绝缘国家重点实验室，西安　 710049
  3.北京ABB开关有限公司，北京　 102600
  4.国网陕西省电力有限公司超高压公司，西安　 710065
  5.国网陕西省电力有限公司营销服务中心（计量中心），西安　 710100
  6.西安工程大学，西安　 710048
  7.国网西咸新区供电公司变电检修中心，西安　 710061
- 作者简介：
- 基金信息：
  
  Science and Technology Project of State Grid Shaanxi Electric Power Co., Ltd(5226KY22000N)
- DOI：
  CLC：
- Published：
- 稿件说明：
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NIU Bo, YANG Dingge, CHU Jifeng, et al. Research on Ablation Characteristics of Copper-tungsten Arc Contacts of High-voltage Circuit Breakers Based on Optical Measurement System[J/OL]. High voltage apparatus, 2025, 1-8.
DOI：

NIU Bo, YANG Dingge, CHU Jifeng, et al. Research on Ablation Characteristics of Copper-tungsten Arc Contacts of High-voltage Circuit Breakers Based on Optical Measurement System[J/OL]. High voltage apparatus, 2025, 1-8. DOI：

摘要

高压SF

断路器具有关合、承载、开断额定电流和故障电流的能力，在维护电力系统安全稳定运行方面发挥着重要作用。然而，断路器触头在电弧烧蚀作用下寿命不断降低，进而导致开断失败，因此研究弧触头的烧蚀特性对开发电寿命监测系统有重要意义。文中基于高速摄影仪、高速光谱仪、光纤传感器等光学测量系统，对电弧弧根的宏观移动特性进行了观测。通过分析触头表面形态图像和质量损失，探究了铜钨触头在不同开断电流等级下的烧蚀特性。研究发现，随着开断电流的增大，弧根直径逐渐扩大，电弧在触头表面的移动性却降低；铜钨触头的质量损失呈现出指数式上升，表面甚至出现分层现象。在5 kA开断电流作用下，弧根在触头表面旋转移动；随着电流逐渐增加至40 kA，弧根旋转特性减弱，电弧逐渐向触头中心靠拢。因此，电弧特性、弧触头烧蚀量和开断电流之间存在关联关系，可以为高压SF

断路器的电寿命评估提供理论依据。

Abstract

High-voltage SF

circuit breakers have the ability to close

carry

and break rated current and fault current

and play an important role in maintaining the safe and stable operation of power systems. However

the life of circuit breaker contacts is continuously reduced under the action of arc ablation

which leads to breaking failure. Therefore

it is of great significance to study the ablation characteristics of arc contacts for the development of electrical life monitoring systems. Based on high-speed camera

high-speed spectrometer

optical fiber sensor and other optical measurement systems

this paper observes the macroscopic movement characteristics of arc root. By analyzing the contact surface morphological image and mass loss

the ablation characteristics of copper-tungsten contacts at different breaking current levels were explored. The study found that with the increase of breaking current

the diameter of the arc root gradually expanded

and the mobility of the arc on the contact surface decreased; the mass loss of copper-tungsten contacts increased exponentially

and the surface even appeared delamination. Under the action of 5 kA breaking current

the arc root rotates and moves on the surface of the contact; as the current gradually increases to 40 kA

the rotation characteristic of the arc root weakens

and the arc gradually moves towards the center of the c

ontact. Therefore

there is a correlation between the arc characteristics

the amount of arc contact ablation and the breaking current

which can provide a theoretical basis for the evaluation of the electrical life of high-voltage SF

circuit breakers.

关键词

Keywords

references

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