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SPECIAL CASES OF FEEDING LINES FROM THE STANDPOINT OF GROUND FAULT CURRENT DISTRIBUTION PowerPoint Presentation
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SPECIAL CASES OF FEEDING LINES FROM THE STANDPOINT OF GROUND FAULT CURRENT DISTRIBUTION

SPECIAL CASES OF FEEDING LINES FROM THE STANDPOINT OF GROUND FAULT CURRENT DISTRIBUTION

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SPECIAL CASES OF FEEDING LINES FROM THE STANDPOINT OF GROUND FAULT CURRENT DISTRIBUTION

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  1. SPECIAL CASES OF FEEDING LINES FROM THE STANDPOINT OF GROUND FAULT CURRENT DISTRIBUTION

  2. GROUND FAULT CURRENT DISTRIBUTION IN DOUBLE CIRCUIT PARALLEL LINES

  3. PARTS OF THE GROUND FAULT CURRENT UNDER THE CONDITIONS OF GROUND FAULT

  4. CONDENSED EQUIVALENT CIRCUIT

  5. CURRENT GENERATERS SUBSTITUTING MUTUAL INDUCTIVE INFLUENCES

  6. EQUIVALENT CIRCUIT FOR POSITIVE AND NEGATIVE SEQUENCE IMPEDANCES

  7. SIMPLIFIED CONDENSED EQUIVALENT CIRCUIT

  8. EQUATION FOR CRITICAL FAULT POSITION

  9. SPACE DISPOSITION OF THE LINE CONDUCTORS

  10. FAULT CURRENT PASSING THROUGH THE EARTH AS A FUNCTION OF THE FAULT PLACE

  11. FAULT CURRENT PASSING THROUGH THE EARTH AS A FUNCTION OF THE FAULT PLACE

  12. PRACTICAL EXAMPLES OF GROUND FAULT CURRENT DISTRIBUTION IN THE CASES OF LINES COMPOSED OF SECTIONS WITH DIFFERENT LONGITUDINAL PARAMETERS

  13. FEEDING LINE COMPOSED OF TWO DIFFERENT SECTIONS

  14. ADDITIONAL MEASURE FOR REDUCTION OF THE FAULT CURRENT PASSING THROUGH THE EARTH

  15. ADDITIONAL MEASURE FOR REDUCTION OF THE CURRENT PASSING THROUGH THE EARTH

  16. EQUIVALENT CIRCUIT OF LONG GROUNDING CONDUCTORHAVING CONTINIOUS CONTACT WITH THE EARTH

  17. GENERAL EQUATIONS OF THE LINE PRESENTED BY DISCRETE PARAMETERS

  18. ANALYTICAL EXPRESSIONS FOR THE LINEPRESENTED BY DISCRETE PARAMETERS

  19. RESISTANCEOFTHE FINITE GROUNDING CONDUCTOR OF ONE METER LENGTH ρ - equivalentsoilresistivityalong the grounding conductor, Ωm, L- total length of the grounding conductor, m, d - diameter of the grounding conductor, m, h - depth in which the grounding conductor is laid, m

  20. SELF-IMPEDANCE OF THE GROUNDING CONDUCTOR PER ONE METER R‘S – active resistance of the grounding conductor, Ω/km, rS – outer radius of the grounding conductor, m, ω – angular frequency of the network:ω = 2πf, µ0 – magneticconstant: 4π∙10-7 Vs/Am δ - earth penetration depth, m

  21. CONDENSED EQUIVALENT LINE CIRCUIT

  22. ANALYTICAL EXPRESSIONS FORTHE EQUIVALENT ELEMENTS REPRESENTING THE SECOND SECTION

  23. RELEVANT PART OF THE CONDENSED EQUIVALENT CIRCUIT

  24. ANALYTICAL EXPRESSIONS FOR THE REDUCTION OF THE FAULT CURRENT PASSING THROUGH THE EARTH

  25. SPECIAL CASES

  26. ACTIVE LENGTH OF CABLE LINE AS GROUNDING CONDUCTOR

  27. CONDUCTORS DISPOSITION OF THE FIRST AND SECOND LINE SECTION

  28. REDUCTION FACTORS DEPENDING ON THE LENGTH OF THE SECOND SECTION

  29. REDUCTION FACTORS DEPENDING ON THE LENGTH OF THE SECOND SECTION PERFORMED BY CABLE

  30. REDUCTION FACTORS DEPENDING ON THE LENGTH OF THE SECOND SECTION PERFORMED BY CABLE

  31. REDUCTION FACTORS DEPENDING ON THE LENGTH OF THE SECOND SECTION PERFORMED BY A CABLE WITH INSULATED METAL SHEATHS

  32. Lj. Popović: “General Equations of the Line Represented by Discrete Parameters; Part I: Steady State”, IEEE Transactions on Power Delivery, Vol. 6, No. 1, January 1991, pp. 295-301. • Lj. Popović: “Practical Method for Evaluating Ground Fault Current Distribution in Station Supplied by an Unhomogeneous Line”, IEEE Transactions on Power Delivery, Vol. 12, No. 2, April 1997, pp. 722-727. • Lj. Popović: “Practical Method for Evaluating Ground Fault Current Distribution in Station, Towers and Ground Wire”, IEEE Transactions on Power Delivery, Vol. 13, No. 1, January 1998, pp. 123 - 129. • Lj. Popović: “A Practical Method for Evaluation of Ground Fault Current Distribution on Double Circuit Parallel Lines”, IEEE Transactions on Power Delivery, Vol. 15, No. 1, January 2000, pp. 108-113. • Lj. Popović: ”Dissipating of the Partial Ground Fault Current Across Shield Wires of Transmission Lines”, Electric Power Systems Research, Vol. 11, No. 1, August 1986, pp. 25-37.. • Lj. Popovic: ”Ground Fault Current Distribution in a Station Supplied by a Line Composed of a Cable an Overhead Section”, ETEP, European Transactions on Electrical Power, Vol. 17, No. 3, May/June 2007, pp. 207- 208. • Lj. Popovic: “Efficient Reduction of Fault Current Through the Grounding Grid of a Substation Supplied by an Overhead Line”, ETEP, European Transactions on Electrical Power, Vol.16, No3, March/April 2006, pp.269-274. • LLj. Popović: “Efficient Reduction of Fault Current Through the Grounding Grid of Substation Supplied by Cable Line”, IEEE Transactions on Power Delivery, Vol. 15, No. 2, April 2000, pp. 556-561. REFERENCES