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Unit of study_

ELEC5204: Power Systems Analysis and Protection

This unit provides the basis for the analysis of electricity grids using symmetrical components theory. Such analysis theory is the basis for the understanding of electrical faults and the design of protection strategies to safeguard the electrical equipment, and maintain safety of the plant at the highest possible level. The following specific topics are covered: The types and causes of power system faults; balanced faults and short circuit levels; an introduction to fault current transients in machines; symmetric components, sequence impedances and networks; the analysis of unsymmetrical faults. Review of the impact of faults on power system behaviour; issues affecting protection scheme characteristics and clearance times; the security and reliability of protection schemes; the need for protection redundancy and its implementation as local or remote backup; zones of protection and the need for zones to overlap; the analysis and application of over-current and distance relay protection schemes with particular reference to the protection of transmission lines.

Code ELEC5204
Academic unit Electrical and Information Engineering
Credit points 6
Assumed knowledge:
(ELEC3203 OR ELEC9203 OR ELEC5732) AND (ELEC3206 OR ELEC9206 OR ELEC5734). The unit assumes basic knowledge of circuits, familiarity with basic mathematics, competence with basic circuit theory and an understanding of three phase systems, transformers, transmission lines and associated modeling and operation of such equipment

At the completion of this unit, you should be able to:

  • LO1. demonstrate an understanding the functions of switch gear and other devices
  • LO2. demonstrate a basic understanding electrical safety issues and systems earthing to the extent of the material presented
  • LO3. write reports and present information to communicate engineering information clearly, concisely and accurately at a level commensurate with the expected technical knowledge level of the stakeholders involved
  • LO4. incorporate professional standards for economical, environmental, social and safety issues into the design, implementation and operation of power systems by drawing on Australian codes and standards
  • LO5. design basic protection schemes, drawing on principles and knowledge at hand, as well as other available resources to solve the problem to specifications
  • LO6. use a power system simulator to design, test and confirm protection requirements for a given system within the limits of the material presented
  • LO7. demonstrate an understanding of symmetrical components theory and its application
  • LO8. demonstrate proficiency in determining maximum and minimum short circuit levels in power networks using knowledge of principles and concepts developed throughout the course
  • LO9. apply knowledge of concepts and principles studied to demonstrate why protection systems are required and their respective functions to the extent of the material presented.