Next Article in Journal
A New Integration System for Natural Gas Combined Cycle Power Plants with CO2 Capture and Heat Supply
Previous Article in Journal
Analysis of Torque Ripple and Cogging Torque Reduction in Electric Vehicle Traction Platform Applying Rotor Notched Design
Article Menu

Export Article

Open AccessArticle
Energies 2018, 11(11), 3054; https://doi.org/10.3390/en11113054

Symmetrical Loss of Excitation Fault Diagnosis in an Asynchronized High-Voltage Generator

1
School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
2
State Grid Heilongjiang Electric Power Company Limited Electric Power Research Institute, Harbin 150030, China
*
Author to whom correspondence should be addressed.
Received: 21 October 2018 / Revised: 4 November 2018 / Accepted: 4 November 2018 / Published: 6 November 2018
(This article belongs to the Special Issue Fault Diagnosis in Electric Motors)
Full-Text   |   PDF [4251 KB, uploaded 6 November 2018]   |  

Abstract

As a new type of generator, an asynchronized high-voltage generator has the characteristics of an asynchronous generator and high voltage generator. The effect of the loss of an excitation fault for an asynchronized high-voltage generator and its fault diagnosis technique are still in the research stage. Firstly, a finite element model of the asynchronized high-voltage generator considering the field-circuit-movement coupling is established. Secondly, the three phase short-circuit loss of excitation fault, three phase open-circuit loss of excitation fault, and three phase short-circuit fault on the stator side are analyzed by the simulation method that is applied abroad at present. The fault phenomenon under the stator three phase short-circuit fault is similar to that under the three phase short-circuit loss of excitation. Then, a symmetrical loss of the excitation fault diagnosis system based on wavelet packet analysis and the Back Propagation neural network (BP neural network) is established. At last, we confirm that this system can eliminate the interference of the stator three phase short-circuit fault, accurately diagnose the symmetrical loss of the excitation fault, and judge the type of symmetrical loss of the excitation fault. It saves time to find the fault cause and improves the stability of system operation. View Full-Text
Keywords: asynchronized high-voltage generator; loss of excitation; fault diagnosis; wavelet packet and BP neural network asynchronized high-voltage generator; loss of excitation; fault diagnosis; wavelet packet and BP neural network
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Lv, Y.; Gao, Y.; Zhang, J.; Deng, C.; Hou, S. Symmetrical Loss of Excitation Fault Diagnosis in an Asynchronized High-Voltage Generator. Energies 2018, 11, 3054.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top