Detection of an Incipient Rotor Winding Inter-Turn Short Circuit Fault

2021 ◽  
Author(s):  
Hamza Sabir ◽  
Mohammed Ouassaid ◽  
Nabil Ngote
Keyword(s):  
Short Circuit ◽  
Rotor Winding ◽  
Short Circuit Fault

Impact of Rotor Inter-Turn Short-Circuit on Generator Rotor Force

2011 ◽  
Vol 143-144 ◽  
pp. 125-131 ◽  
Author(s):  
Yong Gang Li ◽  
Guo Wei Zhou ◽  
Yu Ca Wu ◽  
He Ming Li
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Force ◽  
Short Circuit ◽  
Total Force ◽  
Distribution Law ◽  
Generator Rotor ◽  
Finite Element Software ◽  
Full Force ◽  
Rotor Winding ◽  
Short Circuit Fault

This paper analyzes the calculation method of unbalanced electromagnetic force by rotor winding inter-turn short-circuit fault, analytical calculating method neglects saturation, cogging and other factors, so the calculation accuracy is not high, in order to accurately calculate the magnetic field and the unbalanced electromagnetic force, this paper propose to analyze generator magnetic field by a finite element software Ansys, the obtained magnetic field data are further used to analyze the distributed electromagnetic force and the total force that generator rotor suffered, electromagnetic force distribution law of different slots, different levels of inter-turn short-circuit are got, which provide a basis for further studying the full force on generator rotor.

The Application of BP Neural Network in Diagnosing the Short Circuit Fault of Winding

2014 ◽  
Vol 543-547 ◽  
pp. 1064-1067
Author(s):  
Jian Qun Zhang ◽  
De Jian Zhou
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Bp Neural Network ◽  
Short Circuit ◽  
Evidence Theory ◽  
Accurate Diagnosis ◽  
Bp Neural Networks ◽  
Rotor Winding ◽  
Short Circuit Fault

As a common fault of motor, the short circuit of rotor winding is important for the accurate diagnosis. In this article, the author collected every status parameter of motor by different sensors, using two BP neural networks to partly diagnose the motor and fusing the results of partly diagnosis by D-S evidence theory. The author increases the creditability of diagnosis results by practices and decreases uncertainty, showing the efficiency of this method.

Fault Diagnose of Rotor Winding Inter Turn Short Circuit in Generator

2013 ◽  
Vol 321-324 ◽  
pp. 1290-1294
Author(s):  
Hai Yan Xiao ◽  
Xue Wu Wang ◽  
Deng Feng Chen
Keyword(s):  
Short Circuit ◽  
Reference Wave ◽  
Magnetic Characteristics ◽  
Wave Form ◽  
Fault Diagnose ◽  
Turbo Generator ◽  
Half Wave ◽  
Wave Forms ◽  
Rotor Winding ◽  
Short Circuit Fault

Based on magnetic characteristics of inter turn circuit of rotor windings in turbo generator, and analysis the principles of detecting coil method. Based on the symmetry of generator structure and magnetic character between stator and rotor, three fault diagnose methods are presented in this paper: Wave form limitations, Half-wave sliding superposition and Reference wave forms. The application example shows that Reference wave forms method is capable of diagnosing inter turn fault, its severity, and especially locating the inter turn short circuit fault.

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