Influence of mechanical faults on electrical resistance in high voltage circuit breaker

2021 ◽  
Vol 129 ◽  
pp. 106827
Author(s):  
Yakui Liu ◽  
Guogang Zhang ◽  
Chenchen Zhao ◽  
Hao Qin ◽  
Jinggang Yang
Keyword(s):  
High Voltage ◽  
Electrical Resistance ◽  
Circuit Breaker ◽  
High Voltage Circuit Breaker ◽  
Mechanical Faults

Research on the Simulation Method of Dynamic Response of High Voltage Circuit Breaker During Operation

2016 ◽  
Author(s):  
J. G. Yang ◽  
K. Zhao ◽  
Y. Pan ◽  
X. D. Liu
Keyword(s):  
High Voltage ◽  
Dynamic Models ◽  
Circuit Breaker ◽  
Simulation Method ◽  
Circuit Breakers ◽  
High Voltage Circuit Breaker ◽  
Element Simulation ◽  
Simulation Based ◽  
Mechanical Faults ◽  
The Operating Mechanism

High voltage circuit breaker (CB) is one of the most important components in high voltage circuit. In the process of operation, some kinds of mechanical faults such as jam fault, component deformation and component failure may occur and affect the performance of the circuit breaker. But, generally it is difficult to diagnose these faults. To obtain the characteristics of these faults in the high voltage circuit breaker, in this paper, a simulation method for high voltage circuit breakers is investigated. Firstly, the dynamic models of the operating mechanism of the high voltage circuit breaker are established and the simulations are performed; then the vibration signals at the monitoring points can be obtained based on finite element simulation. Based on these signals, the characteristics of some typical mechanical faults may be researched. The work in this paper is helpful to recognize the failure mechanism of the high voltage circuit breaker and improve the veracity of the fault diagnosis.

Research on High Voltage Circuit Breaker Mechanical Faults Online Monitoring

2014 ◽  
Vol 521 ◽  
pp. 362-365 ◽  
Author(s):  
Yu Sheng Quan ◽  
Zi Jian Wang ◽  
Yan Wu ◽  
Lin Jie Fang
Keyword(s):  
High Voltage ◽  
Distribution System ◽  
Circuit Breaker ◽  
Equivalent Circuit Model ◽  
Circuit Breakers ◽  
Reactive Component ◽  
High Voltage Circuit Breaker ◽  
Mechanical Faults ◽  
On Line ◽  
Curve Fitting Method

In power transformation and distribution system, unplanned blackouts caused by high voltage circuit breaker faults accounted for more than 60% of the total accidents [, most of the circuit breaker faults are caused by mechanical faults. Base on circuit breaker electrical characteristics, this paper present a method of circuit breaker mechanical faults on-line monitoring. Switching on-off of circuit breakers contacts can be equivalent to a time-varying capacitance, based on equivalent circuit model, the relationship between reactive component and time can be concluded. Processing circuit breakers contacts electric signals with orthogonal decomposition and least squares curve fitting method to highlight the main characteristics of the mechanical faults. These processed data collected from different running state can create a database, taking this database as diagnostic basis to diagnose whether mechanical faults occur to circuit breaker.

Design and Realization of 35kV Phase Controlled Circuit Breaker and its Electromagnetic Force Driving Actuator

2013 ◽  
Vol 380-384 ◽  
pp. 3213-3216
Author(s):  
Hai Yan Wang ◽  
Duan Lei Yuan ◽  
Chen Xu Niu ◽  
Hua Jun Dong
Keyword(s):  
High Voltage ◽  
Simulation Analysis ◽  
Random Phase ◽  
Circuit Breaker ◽  
Transient Simulation ◽  
Test Validation ◽  
Load Force ◽  
Magnetic Actuator ◽  
Phase Selection ◽  
High Voltage Circuit Breaker

In this paper, mainly for the problem that high voltage circuit breaker closing at the random phase can bring hard harmfulness to the power system. We design the 35kV SF6-Phase Control circuit breaker can control speed smartly, and opens or closes with phase selection, which is equipped with the magnetic actuator. In the article, the static and transient simulation analysis which includes the load force, and carried out prototype trial and test validation. At last, the results of simulation and test is given.

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