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Recognition Study of Turbo-generator Rotor Winding Inter-turn Short Circuit Fault Based on Multi-loop Theory

Author: GaoLei
Tutor: LiYongGang
School: North China Electric Power University
Course: Motor and electrical
Keywords: Generator Rotor Winding short circuit Multi - loop theory
CLC: TM311
Type: Master's thesis
Year: 2011
Downloads: 36
Quote: 0
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Abstract


With the development and progress of society , the direction of the development of the power system is more focused on the high pressure, high capacity and multi-machine interconnected system . With the increasing generating capacity , once the generator failure , will have serious consequences , a huge loss to the national economy , and therefore reliable generator operation is particularly important . Turbine generator rotor winding inter-turn short-circuit fault is more common in the generator running , the generator rotor winding inter-turn short circuit fault is very necessary . This paper analyzes the reasons of the generation of the generator rotor winding inter-turn short circuit fault , the rotor winding inter turn short-circuit fault occurs fault feature , and to analyze the causes of these fault feature . Introduces the basic principles of the theory of multi-loop model , based on a multi-loop theory to establish the mathematical model , when a short-circuit fault in the rotor windings of turbogenerator excitation current to apply this model for the simulation of different turns short circuit fault by comparative analysis of the amount of fault characteristic electrical generator rotor winding inter-turn short circuit fault occurs , the excitation current integer harmonic components , including not only the even number of harmonics, odd harmonics, and the increase in size with the severity of the fault , in contrast to the results with the experimental results , the establishment of multi-loop model accuracy is verified by experiment . Thus, you can take advantage of this fault model simulation calculation of the rotor winding inter turn short-circuit fault characteristics of electrical quantities , more accurate simulation of multi-loop theory can calculate the size of the failure of electrical quantities , it can provide the basis for the generator rotor winding inter-turn short circuit fault protection .

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Turbine Generator
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