Dissertation > Excellent graduate degree dissertation topics show

Study of a Reliability Assessment Method of Power Transformer Based on Fault-Tree Analysis

Author: ZhouZuoZuo
Tutor: WangYouYuan
School: Chongqing University
Course: Electrical Engineering
Keywords: Power transformers Reliability Assessment Fault Tree Analysis The degree of importance Failure probability
CLC: TM41
Type: Master's thesis
Year: 2009
Downloads: 671
Quote: 18
Read: Download Dissertation

Abstract


Large power transformers as the hub of power system equipment, its operation reliability directly related to the security and stability of the power system. Relative to the currently widely used in regular maintenance, condition-based maintenance way to effectively reduce maintenance costs, reduce maintenance outage time, improve equipment utilization, transformer maintenance is becoming a major development direction. Correctly assess the level of reliability of the transformer in operation is a key condition-based maintenance success. Therefore, timely and accurate grasp of the level of reliability of the transformer guide transformer condition-based maintenance, and improve the operational reliability of power transformers, protection of the safe and reliable operation of the entire power grid has a very important significance. In this paper, the power transformer failure mode and effect analysis, the use of fault tree analysis method to establish the the transformer reliability assessment model, and gives important degree, the failure probability of the model parameters to determine method. The research content follows: (1) using the function and structure of the combined failure mode and effects analysis (Failure Mode and Effect Analysis, FMEA) method, considering the transformer components and their functions on the basis of complete transformer FMEA table to determine transformer fault mode; then the logical relationship between the various failure modes, the use of fault tree analysis method to establish the the transformer fault tree reliability assessment model. (2) for the traditional fault tree quantitative analysis methods can not effectively distinguish between probability important degree of lack of events in the fault tree, failure mode importance of expert evaluation on the basis of comprehensive consideration of various factors affecting the failure mode importance system, and through the introduction of the concept of the degree of coordination to achieve a different expert opinions processing; established a method for determining weight of each failure mode indicators based on trapezoidal fuzzy numbers, and based on expert ratings, given the degree of importance of the failure mode of the power transformer. ③ yet the actual situation of the various components of the power transformer fault probability distribution function and transformer component reliability test difficult, the paper on the basis of the reference power transformers testing procedures and FMEA analysis, summed up the \\The ④ given flow chart based on the assessment of the reliability assessment method for power transformer fault tree analysis, and assess the effectiveness of the method is verified by assessing instance.

Related Dissertations

  1. Stochastic Optimal Dispatch of Power System Considering Uncertain Line Failures under Extreme Weather Disaster,TM73
  2. BOT financing risk assessment method based on fault tree study,F283
  3. Safety Assessment of Coal Gangue Hazard and Analysis of the Greening Reclamation,TD849.5
  4. Space Camera Fault Diagnosis Expert System Research and Implementation,TP182
  5. Research on High-precision Measurement and Modeling of High Voltage Electric Transformers,TM452
  6. Dedicated circuit test methods Research and Implementation,TN707
  7. Ozone disinfection equipment reliability analysis and design,TH771.4
  8. Long-life products of degradation test methods,TB114.3
  9. Elevator control cabinet testing and fault diagnosis technology,TU857
  10. Airborne voice communication system Security of airworthiness,TN919.8
  11. Reliability Analysis for the Equal Vavle Used in Shanghai Metro Line 1 DA01 Vehicles,U270.35
  12. Design and Implementation of the display smart detection system,TP274
  13. SCB11-1600/10 resin insulation dry-type power transformer R \u0026 D,TM412
  14. A Study of Mordern Urban Network Planning in Smart Grid Context,TM715
  15. Study of the Maintenance Strategy about Safety Relay,TM58
  16. Basic Studies on Optimization Method of Seismic Fortification Criterion of Buildings,TU352.11
  17. Time-Dependent Reliability Assessment of Concrete Continuous Beam Bridge Based on Real-Time Monitoring Information,U448.34
  18. Study on Mechanical Fault Diagnosis Based on Ferrography,TH165.3
  19. Research of Joint Importance Compatibility in Fault Tree Analysis,TH165.3
  20. Reliability Analysis and Fatigue Analysis for CNG Storage Gas Pressure Vessel Using Finite Element Method,TH49
  21. Software Reliability Evaluation and auxiliary test system design and implementation,TP311.52

CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Power transformers
© 2012 www.DissertationTopic.Net  Mobile