Dissertation > Excellent graduate degree dissertation topics show

The Research on Fault Selection Technology of Oilfield Distribution Network

Author: CuiXueBao
Tutor: GeShaoYun；ZuoBaoGeng
School: Tianjin University
Course: Electrical Engineering
Keywords: Paralleled medium resistance Zero-sequence active power Injecting signal method Small current grounding selector
CLC: TM862
Type: Master's thesis
Year: 2010
Downloads: 80
Quote: 1
Read: Download Dissertation

Abstract


Non-effectively ground system was adopted in Daqing oilfield distribution network and the single-phase ground faults happened frequently because of the over loading, long-distance lines and more branchs. Especiallly, as the increase of the oilfield users and the capacity of electrical equipment, as well as more cables were used, it’s not solved for a long time that the single-phase ground fault selection and fault location problems. This paper foucesd on the fault selection & location technology in arc-suppression coil grounding distribution system.According to the actual situation, the selection method of paralleled medium resistance while petersen coil occurs short-circuit fault is presented in this paper. In order to greatly enhance the zero-sequence current active component during the single-phase ground fault, the short-time switch and the resistance paralleled with the petersen coil were controlled when there is a permanent single-phase ground fault in the system. The zero-sequence current generated by the parallel resistance and zero-sequence active power is much greater than the non-fault line. Thus, thanks to zero-sequence active power, the selection accuracy can be improved significantly.This paper analyzed the injection sigal method and presented that the single-phase ground fault location method, which is based on the injection singal method, and which is the best method now. The paper also described the network topology, which proved that the information table and discernibility matrix have nothing to do with the branch fault, but can accurately determine the fault location. Finally, the paper introduced a small-current ground selection device, and analyzed its working principle and implementation functation.

Related Dissertations

  1. The Design of Mine High Voltage Intelligence Switch,TM564
  2. Research and Realization of Integrated Protective Devicer for HSPE-6 Type Intelligent Mine High Voltage Flame-proof Feed Switch,TM862
  3. Design and Implementation of the lightning protection business management system based on WEB technology,TM862
  4. The Corrosion Break-point Diagnosis Method of Grounding Grid Based on the Principle of Uniting Magnet Field and Electric Circuit,TM862
  5. Research and Realization of Integrated Protective Devicer for HSPE-6 Type Intelligent Mine High Voltage Flame-proof Feed Switch,TM862
  6. Study on Rapid Identification and Inhibition of Arc Grounding Over-voltage,TM862
  7. Study on Hydro-power Station Grounding in the High Soil Resistivity Region,TM862
  8. Transient overvoltage monitoring and recording system research,TM862
  9. A Novel Technique for High-impedance Grounding Fault Detection in High Voltage Transmation Line,TM862
  10. Application of Deep-well Cathodic Protection To the Anti-corrosion Grounding Grid Substation,TM862
  11. Research on the Substation Grounding System and Analysis of Fault Diagnosis,TM862
  12. Daqing Oilfield Power Status and Improvement Measures of Lightning,TM862
  13. Fault Analysis of 6.3kV Small Current Grounding System in Longfeng Power Plant,TM862
  14. Research on Internal Over-voltage in 35kV Power Grid of Daqing Oilfield,TM862
  15. Study on Reason and Modification Technique of Neutral Displacing Voltage of 35kV System in Daqing Oil Field,TM862
  16. Research on Transmission Line Fault Location in Non-Direct Grounded Neutral System Under the Condition of Defect Data,TM862
  17. Study of Generator Self-excitation Caused by Capacitive Currents of Long Distance UHV Transmission Lines,TM862
  18. Research of Phase-to-ground Fault Location in the Distribution Line Based on the Multiple Spots Information,TM862
  19. The Research on the Neutral Point Grounded Mode of YongMei Group 6kV Distribution Power Networks,TM862
  20. The Terminal Equipment of the Management of Electricity Load System,TM862

CLC: > Industrial Technology > Electrotechnical > High Voltage Engineering > Overvoltage and Its Protection > Over-voltage protection devices
© 2012 www.DissertationTopic.Net  Mobile