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Research on Fault Diagnosis Expert System of Hydroelectric Generating Set Vibration Based on Petri Network

Author: YuYongHua
Tutor: LiuHui
School: Hubei University of Technology
Course: Control Theory and Control Engineering
Keywords: Hydro-generating unit Petri nets Expert system Vibration Fault Reasoning mechanism
CLC: TM312
Type: Master's thesis
Year: 2010
Downloads: 96
Quote: 0
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Abstract


First hydropower units at home and abroad fault diagnosis field development status and trends described the significance of the hydropower units fault diagnosis . In order to enable readers to understand the mechanism of the unit vibration fault , briefly discusses the structure and working principle of the turbine generator set , and hydro-generating unit vibration fault hydraulic , electromagnetic and mechanical three major factors that have been classified . The common types of intelligent fault diagnosis method proposed mature application of expert system in the field of fault diagnosis . Finally, Petri net theory mathematical description of the methods and the advantages of graphical expression , the establishment of fault diagnosis expert system inference model , and applied to the fault diagnosis of hydropower units . Including the following aspects: (1) an overview of the current situation and prospects of China 's hydropower development at this stage , discusses the significance of the hydropower units fault diagnosis , hydropower units at home and abroad Fault Diagnosis of the status quo , levels and trends . (2 ) describe the structure and working principle of the turbine generator set , and the cause of the failure of the hydropower units classified . (3) describes fault diagnosis method and common intelligent fault diagnosis method in the turbine generator set , focusing on fault diagnosis method based on expert system . Petri nets ( 4 ), a hydraulic generator set fault diagnosis expert system inference mechanism ; the Petri nets fault diagnosis model reasoning detailed analysis , followed by examples demonstrate reasonable correctness of this reasoning mechanism . (5) hydro-generating unit vibration fault diagnosis expert system hardware and software implementation , and simple hydro-generating unit vibration fault diagnosis expert system using Microsoft Visual Basic 6.0 software design .

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