Live support chatSymmetrical Components and Fault Current Analysis (Video on Demand)
Credit: 4 PDH
Subject Matter Expert: Foad Alvandi, P.E.
In Symmetrical Components and Fault Current Analysis (Video on Demand) , you'll learn ...
- The theory and practical application of symmetrical components in three-phase power systems
- The analysis of balanced and unbalanced faults using sequence networks and per-unit system methods
- The modeling of transmission lines, transformers, rotating machines, and balanced loads in the sequence domain
- How to calculate fault currents, fault voltages, and sequence quantities for multiple short-circuit fault conditions
Overview
Preview a portion of the video before you purchase it.
Credit: 4 PDH
This course provides a comprehensive study of symmetrical components and their application to short-circuit fault analysis in three-phase electrical power systems. The course introduces the theory of symmetrical components developed by Charles Fortescue and explains how unbalanced voltages and currents can be decomposed into zero-, positive-, and negative-sequence components for simplified system analysis.
Participants learn how to calculate sequence quantities, reconstruct phase values from sequence components, and develop sequence networks for balanced loads, transmission lines, synchronous machines, and three-phase transformer configurations. The course also examines the impact of line transposition, grounding methods, and transformer winding connections on sequence impedance behavior. Detailed coverage is provided for common fault conditions including single line-to-ground, line-to-line, double line-to-ground, simultaneous multiple faults, and symmetrical three-phase faults.
Each topic is immediately followed by well-chosen numerical examples and detailed steps leading to solution of each to further enhance the learning experience of the participants. Numerous worked examples demonstrate the use of Thevenin equivalents, per-unit calculations, and sequence network interconnections to determine fault currents and fault-induced voltages. The course emphasizes practical power system applications including transmission system analysis, equipment protection, relay coordination, and the evaluation of fault severity in utility and industrial power systems.
This course is intended for electrical engineers, as well as technical personnel who are interested in learning the fundamentals of power systems short circuit and fault current analysis.
Specific Knowledge or Skill Obtained
This course teaches the following specific knowledge and skills:
- The fundamentals of the theory of symmetrical components and how to calculate sequence components of three-phase voltages and currents
- How to calculate three-phase voltages and currents from their sequence components
- How to calculate the zero- positive- and negative impedances of loads / transmission lines
- How to calculate power delivered to loads, with the help of sequence networks
- How to determine and draw up the sequence networks of rotating machines and transformers
- How to describe the different modes of faults in power systems, the frequency of occurrence and severity of each
- How to outline the causes of power system short circuit faults
- How to form the zero-, positive- and negative-sequence networks of a given example segment of the power system
- How to find and draw the Thevenin equivalent of each sequence network
- How to connect the equivalent sequence networks in ways that allow calculation of sequence components of currents and voltages of fault currents and voltages for various types of faults.
- How to calculate the fault currents and voltages at fault location using the sequence networks
- How to calculate the base values of currents and voltages, and use them in conjunction with per-unit values to find the actual fault currents and voltages in amperes and in kilo volts respectively
- How to calculate fault currents in a symmetrical three-phase fault
Video on Demand
This course is a recorded version of a live lecture and will be streamed directly to your computer's media player. Our format is generally compatible with media players included with all computers and mobile devices. After watching the video presentation, you will return to your account to take the online quiz. While this is a recording of a live presentation, please note that this recording will not qualify as a "live" or "interactive" continuing education activity in those jurisdictions where it is required.
Certificate of Completion
You will be able to immediately print a certificate of completion after passing a multiple-choice quiz consisting of 20 questions. PDH credits are not awarded until the course is completed and quiz is passed.
| This course is applicable to professional engineers in: | ||
| Alabama (P.E.) | Alaska (P.E.) | Arkansas (P.E.) |
| Delaware (P.E.) | District of Columbia (P.E.) | Florida (P.E. Area of Practice) |
| Georgia (P.E.) | Idaho (P.E.) | Illinois (P.E.) |
| Illinois (S.E.) | Indiana (P.E.) | Iowa (P.E.) |
| Kansas (P.E.) | Kentucky (P.E.) | Louisiana (P.E.) |
| Maine (P.E.) | Maryland (P.E.) | Michigan (P.E.) |
| Minnesota (P.E.) | Mississippi (P.E.) | Missouri (P.E.) |
| Montana (P.E.) | Nebraska (P.E.) | Nevada (P.E.) |
| New Hampshire (P.E.) | New Jersey (P.E.) | New Mexico (P.E.) |
| New York (P.E.) | North Carolina (P.E.) | North Dakota (P.E.) |
| Ohio (P.E. Self-Paced) | Oklahoma (P.E.) | Oregon (P.E.) |
| Pennsylvania (P.E.) | South Carolina (P.E.) | South Dakota (P.E.) |
| Tennessee (P.E.) | Texas (P.E.) | Utah (P.E.) |
| Vermont (P.E.) | Virginia (P.E.) | West Virginia (P.E.) |
| Wisconsin (P.E.) | Wyoming (P.E.) | |
Preview a portion of the video before you purchase it.
Credit: 4 PDH
