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You Y.-M.,Xiamen Huadian Switchgear Co. | Li J.,Xiamen University of Technology | Lin M.-R.,Xiamen Huadian Switchgear Co. | Liu J.-A.,HIGH-TECH | Ouyang Z.-G.,Xiamen Huadian Switchgear Co.
China International Conference on Electricity Distribution, CICED | Year: 2014

In this paper, through the monitoring case on the mechanical characteristics of the circuit breaker in service operation, analyzed the problems such as when the circuit breaker is in the running process whether is abnormal, potential faults or defect types, the potential fault parts, etc, and had a maintenance to the products with potential failures that may endanger the operation, and verified the potential fault diagnosis by the actual products. This paper uses the advanced on-line monitoring system of high voltage circuit breaker for monitoring circuit breaker closing and opening motions and current waveform of closing and opening coil, to obtain spring running state and monitoring the spring fatigue performance at any time. It solves the problem that the spring which is most important component of operating mechanism is difficult to monitoring in the running status. Meanwhile, we can determine common fault from the current waveform of closing/opening coil, such as whether the coil is binding or auxiliary switch is failures and so on. It provides effective guarantee of reliable safety runs for circuit breakers. © 2014 IEEE.


Han S.-G.,China Electric Power Research Institute | Huang Q.,HIGH-TECH | You Y.-M.,Xiamen Huadian Switchgear Co.
China International Conference on Electricity Distribution, CICED | Year: 2016

The contact welding phenomenon of the vacuum interrupter occurs frequently when the vacuum circuit breaker closing short circuit current. It cause the circuit breaker refused tripping or vacuum interrupter burst, which belongs to the serious accident. A lot of research work about contact welding phenomenon has been done in universities and companies at home and abroad. The reason in the vacuum interrupter contact welding after analysis can from different aspects: such as contact materials, closing speed, contact pressure, contact closing bounce etc. Phase selection can avoid the vacuum interrupter contact welding when it closes the bigger inrush current. But there have no research and optimize match about the institutions of the output characteristics and load characteristic, so as to improve the capability of anti fusion welding in the domestic and foreign reference. This article was based on test results, and put forward the output characteristic of the institutions and the load characteristics matching problem is another important influence factor of fusion welding, and analyzed the influence factors of the output characteristics of spring mechanism in vacuum circuit breaker. Finding that the output characteristics of vacuum circuit breaker are seriously affected by the track of the cam contour and the angles between four-bar linkage of driving mechanism. According to three different output characteristics, opening and closing test of short-circuit current respectively for vacuum circuit breaker, rated voltage: 40.5 kV, rated current: 31.5 kA, short-circuit close current: 80 kA. Contact spring pressure: 3200 N ∼ 3400 N. Figure 1 shows the different four-bar linkage structures and output characteristics of the cam. Curve 1 for the four-bar rod Angle is α1. 1 # cam structure, Curve 2 for the four-bar rod Angle is α2, 1 # cam structure, Curve 3 for the four-bar rod Angle is α2, 2# cam structure, spring mechanism relative to the output of the circuit breaker shaft torque curve. © 2016 IEEE.


You Y.,Xiamen Huadian Switchgear Co. | Ouyang Z.,Xiamen University of Technology | Ma P.,Xiamen Huadian Switchgear Co. | Jiao Q.,Xiamen Huadian Switchgear Co. | Li J.,Xiamen University of Technology
Gaoya Dianqi/High Voltage Apparatus | Year: 2014

The contact welding of the vacuum interrupter during closing operation may cause rejecting open operation and even interrupter burst, which belongs to fatal fault. In this paper, based on the experimental results, the match between the mechanism's output characteristics and the load characteristics is a critical influencing factor on the contact welding of the vacuum interrupter during closing operation. The influencing factors on the output characteristics of spring operation mechanism of vacuum circuit breaker are analyzed. The output characteristics of vacuum circuit breaker are crucially affected by the track of cam contour and the angles between four-bar linkage of transmission mechanism. To achieve a good matching of mechanism output characteristics and load characteristics of circuit breaker by optimizing the track of cam contour and the angles between transmission mechanism's four-bar linkage, the problem of the contact welding when circuit breaker making the short circuit current is solved.


Ouyang Z.,Xiamen University of Technology | Ma Z.,Xiamen Huadian Switchgear Co. | You Y.,Xiamen Huadian Switchgear Co. | Li J.,Xiamen University of Technology | Xiao L.,Xiamen Huadian Switchgear Co.
Jixie Qiangdu/Journal of Mechanical Strength | Year: 2015

A combination method of simulation and test data to solve the material parameters was raised, with the certain material parameters a new type of connecting rod of disconnector was analyzed. Material's Young modulus and Poisson's ratio was obtained by using the existing connecting rod of disconnector. The model of new type of connecting rod of disconnector was made by the software of Solidworks. The finite element software of Ansys Workbench was used to carry out linear static structural analysis. The simulation result provides a theoretical basis for design and analysis new type of connecting rod of disconnector. © 2015, Journal of Mechanical Strength. All right reserved.

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