University of Malta

Study-Unit Description
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TITLE Electrical Power 1

LEVEL 02 - Years 2, 3 in Modular Undergraduate Course


DEPARTMENT Industrial Electrical Power Conversion

DESCRIPTION - The Per Unit System: Revision of 3–phase systems; Definition of Per Unit System; Representation of Component Specifications in pu; Changing between different bases.

- Power Transfer in Power Systems: Load Flow Problem; Balance of Powers; Synchronous Generator in Steady State Operation; Synchronous Generator Excitation systems; Performance Chart.

- Transmission Lines: Overhead Lines; Corona Discharge; Insulator Types; Underground Cables; DC Cables; Equivalent Circuits.

- Fault Analysis: Types of Fault; The Fault MVA Source; Symmetrical Faults; Limiting the Fault Level.

- Power System Protection: Protection Relays; Overcurrent Protection; Unit Protection; Distance Protection.

Study-unit Aims:

This unit covers the principles of the components that make up an Electrical Power System. It deals with the p.u. method, steady-state operation of synchronous generators, transmission lines, symmetrical faults and the basics of power system protection.

Learning Outcomes:

1. Knowledge & Understanding:

By the end of the study-unit the student will be able to:
- Explain the principles of operation of synchronous generators.
- Understand how to use the p.u. method in power systems.
- Understand and explain the power flows in transmission lines and how these are modelled (short, medium and long).
- Explain and analyse symmetrical three phase faults.
- Understand the basics of protection in power systems.

2. Skills:

By the end of the study-unit the student will be able to:
- Perform calculations related to synchronous generators and derive their performance chart.
- Perform p.u. calculations applied to power systems.
- Calculate power flows in a power system.
- Perform calculations related to symmetrical three phase faults in power systems.
- Set the parameters of basic power system protection.

Main Text/s and any supplementary readings:

- Power System Analysis, John Grainger, Jr., William Stevenson.

ADDITIONAL NOTES Pre-requisite Study-unit: EPC1202

STUDY-UNIT TYPE Lecture, Laboratory Session and Tutorial

Assessment Component/s Resit Availability Weighting
Practical No 15%
Examination (2 Hours) Yes 85%

LECTURER/S Cedric Caruana Mifsud

The University makes every effort to ensure that the published Courses Plans, Programmes of Study and Study-Unit information are complete and up-to-date at the time of publication. The University reserves the right to make changes in case errors are detected after publication.
The availability of optional units may be subject to timetabling constraints.
Units not attracting a sufficient number of registrations may be withdrawn without notice.
It should be noted that all the information in the study-unit description above applies to the academic year 2017/8, if study-unit is available during this academic year, and may be subject to change in subsequent years.

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