电器与能效管理技术 ›› 2023, Vol. 0 ›› Issue (10): 70-75.doi: 10.16628/j.cnki.2095-8188.2023.10.011

• 检测与试验 • 上一篇    下一篇

熔断器过载分断试验系统及试验方法分析

李赛赛1, 苗本健1, 张达芬1, 周小猛2, 林志力1, 郭向荣1   

  1. 1.广东产品质量监督检验研究院, 广东 广州 510330
    2.中国科学院深圳先进技术研究院, 广东 深圳 518055
  • 收稿日期:2023-08-17 出版日期:2023-10-30 发布日期:2023-11-23
  • 作者简介:李赛赛(1989—),男,工程师,主要从事检测设备研发、自动控制系统、输配电设备试验系统及技术的研究。|苗本健(1969—),男,教授级高级工程师,主要从事电器产品检测研究、检测设备统筹规划、输配电设备试验系统建设及实施。|张达芬(1984—),男,工程师,主要从事中、低压电器产品性能的检测试验和试验设备的研究。
  • 基金资助:
    广东省重点研发计划项目(2020B0404020003)

Analysis of Overload Breaking Testing System and Testing Method for Fuses

LI Saisai1, MIAO Benjian1, ZHANG Dafen1, ZHOU Xiaomeng2, LIN Zhili1, GUO Xiangrong1   

  1. 1. Guangdong Institute of Product Quality Supervision and Inspection, Guangzhou 510330, China
    2. Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
  • Received:2023-08-17 Online:2023-10-30 Published:2023-11-23

摘要:

针对实验室使用现有熔断器过载分断试验系统进行熔断器分断能力测试过程中,因预热转换时刻判断不够准确,造成熔断器在预热阶段提前熔断或全压电路中较长时间才熔断的问题,分析了熔断器的熔断过程及端口电压的变化趋势,提出了使用熔断器端口电压斜率作为判据的试验方法,设计了电压拟合公式和控制程序,并进行仿真和试验验证。仿真和试验结果表明,公式拟合曲线与实际测试波形吻合,由控制程序判断预热转换时刻并执行预热转换操作,切换到全压回路之后通流时间控制在3 s以内,取得理想的试验结果。所提试验系统和控制方法适用于不同类型、电压等级的熔断器,具有较高的推广应用价值。

关键词: 熔断器, 过载分断, 预热转换, 电压斜率, 拟合曲线

Abstract:

In order to solve the problem that the fuse breaks in advance in the preheating stage or takes a long time to break in the full-voltage circuit due to the inaccurate judgment of the preheating transition time during the fuse breaking capability test using the existing fuse overload breaking test system in the laboratory, the fusing process of the fuse and the changing trend of the port voltage are analyzed. A testing method using the voltage slope of the fuse port as the criterion is proposed. The voltage fitting formula and control program are designed and verified by the simulation and experiment. The simulation and testing results show that the curve fitted by the formula is perfectly consistent with the actual testing waveform. The control program determines the preheating conversion time and performs the preheating conversion operation. After switching to the full voltage loop, the flow passing time is controlled within 3 seconds, and the ideal testing results are obtained. The testing system and control method mentioned are suitable for different types and voltage levels of fuses, and have high application value.

Key words: fuse, overload breaking, preheating conversion, voltage slope, fitting curve

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