摘要详情

ID / 提交时间

9 / 2024-03-21 17:18:22

标题

Detection methods for the tripping speed of the operating mechanism in molded case circuit breaker

关键字

tripping speed; rotary potentiometers; oscillograph; laser sensors; high-speed videography; accuracy; stability

主题及专题

7)Fundamental physics in Switchgear

状态

摘要录用

作者

Hao Han / Xiamen University of Technology

Ruiyang Guan / Xiamen University of Technology

TianFu Li / Xiamen Hong Fa

摘要

The tripping speed of circuit breaker, which is a crucial equipment in power systems, directly impacts the safety and stability of power system. Hence, accurate detection for this speed is paramount. The influence factors of tripping speed and identifying key parameters were analyzed. Two detection methods are proposed in this paper. For the first method, various abnormal conditions, which were obtained by adjusting potentiometer settings, triggering the circuit breaker's tripping mechanism and recording electrical signal changes with an oscilloscope, were simulated to calculate the actual tripping speed. For the second one, a laser sensor was used to detect tripping actions, with the oscilloscope capturing changes in the sensor's electrical output for speed calculation. To validate these methods, the results are compared with the pictures obtained from high-speed cameras, and a comprehensive quality evaluation is conducted. Based on the accuracy and stability, one effective method was selected, this paper is useful for the industrial production process.