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Short Circuit Analysis for HV Three Phase Systems
Rating: 4.5 out of 5(50 ratings)
437 students

Short Circuit Analysis for HV Three Phase Systems

Analyzing Asymmetrical Three Phase Power
Created byGraham Van Brunt P. Eng., B.Sc.
Last updated 6/2020
English
English [Auto],

What you'll learn

  • At the end of this Course the student will understand the basic concepts of fault studies on a high voltage three phase system.
  • The student will understand the methodologies of system faults and be able to analyse faults using symmetrical components.
  • System modeling is then used to aid in the process, with the ability to move between asymmetrical and symmetrical systems.

Course content

1 section • 9 lectures • 3h 47m total length

  • Ch - 00 Introduction to Short Circuit Analysis for HV Three Phase Systems course6:44

    Explore the fundamentals of short circuit analysis for high-voltage three-phase systems using per-phase and per-unit methods, symmetrical components, and positive, negative, zero sequence networks to analyze faults.

  • Ch - 01 Short Circuit & Fault Analysis Overview11:37

    Explore short circuit and fault analysis for HV three-phase systems using system modeling, per unit analysis, and symmetrical components, including fault types like phase-to-ground, phase-to-phase, and three-phase faults.

  • Ch - 02 Per Phase Analysis33:03

    Learn per phase analysis to reduce a balanced three-phase system to a single phase, apply five-step procedures, and use delta-to-wye conversions to solve line currents, voltages, and power.

  • Ch - 03 Per Unit Analysis22:22
  • Ch - 04 Change of Base11:10

    Change per-unit impedances between bases in high-voltage three-phase systems using base conversion formulas, demonstrated by converting 0.18 pu on 90 mva to 0.2 pu on 100 mva.

  • Ch - 05 Transformers & Per Unit Analysis31:23

    Explain per-unit analysis for high-voltage three-phase systems, defining bases, transforming impedance across high and low sides, and handling transformer configurations (wye, delta, delta-delta) with phase shifts.

  • Ch - 06 Symmetrical Components29:55

    Apply Fortescue's symmetrical components to rewrite any asymmetrical three-phase quantities as positive, negative, and zero sequence, enabling per-phase, per-unit analysis and back-conversion to real currents, voltages, and impedances.

  • Ch - 07 Asymmetrical Three Phase Fault Analysis51:36

    Analyze asymmetrical faults in high-voltage three-phase systems using positive, negative, and zero sequence networks, Thevenin equivalents, and per-unit modeling, for line-to-ground, line-to-line, and three-phase faults.

  • Ch - 08 System Modeling29:39

    Explore system modeling for high-voltage three-phase faults using symmetrical components, including positive, negative, and zero sequence networks, single-line diagrams, and per-unit transformer and line models.

Requirements

  • The student should have an understanding of the laws and theorems related to three phase electrical power systems, Per Unit Values and Symmetrical Components.

Description

This Course “Short Circuit Analysis for HV Three Phase Systems” introduces the student to the basic concepts of fault studies on a high voltage three phase system. With the help of a quick review of “Per Phase” & “Per Unit” methodologies system faults are analyzed with the use of symmetrical components. System modeling is then used in order to aid in the process, with the ability to move between asymmetrical and symmetrical systems.

Who this course is for:

  • The targeted audience is Managers, Engineers, Technologists, Maintenance Personnel working in the electrical power protection industry.

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