Electrical Power Engineering 3 (U00442)

? Credit Points : 20 ? SCQF Level : 9 ? Acronym : EEL-3-ELEPE

Power Systems: To provide students with a thorough understanding of the steady state and dynamic performance of synchronous motors and generators, derived from the starting point of airgap MMF vectors. The above part of the lecture course is supported by the Powerway laboratory. To enable students to analyse in per-unit and absolute values single line diagram representations of balanced power systems, and perform load-flow and short-circuit studies. To introduce students to un-balanced load systems and systems with asymmetrical faults and enable them to represent the un-balanced systems using symmetrical components. To expose the students to the fundamental issues in the design of large power systems, involving long term planning, mixed fuel resource/energy scheduling and power system plant investment appraisal. Rural electrification is included and the above part of the course is integrated by the Castaway team design/cost preparation of a proposal for a rural electrification system.

Power Electronics: This module aims to introduce students to the basic power electronic devices and circuits used to process electrical power.

Powerway: Powerway aims to give the students experience in working with rotating machines and power electronic equipment. Working in pairs, the students design and put together a system comprising a dc motor drive acting as prime mover to a synchronous generator, which has to be synchronised to the mains supply, and power fed into the grid system. The students spend six hours in the laboratory, and must submit a short report on the exercise.
Castaway: Castaway is a group design exercise linked to the Power Systems lecture module. Groups of students design, cost and evaluate the expansion of a power delivery system in a less developed country. The exercise takes place on a single day during the summer term.

Entry Requirements

? Pre-requisites : Electrical Power Engineering 2

Subject Areas

Home subject area

Electronics, (School of Engineering and Electronics, Schedule M)

Delivery Information

? Normal year taken : 3rd year

? Delivery Period : Semester 2 (Blocks 3-4)

? Contact Teaching Time : 6 hour(s) per week for 11 weeks

First Class Information

Date	Start	End	Room	Area	Additional Information
07/01/2008	14:00	14:50	Lecture Theatre 1, Eng Sanderson Building	KB

? Additional Class Information : Tutorials: Wednesday 12:10 - 13:00, Friday 12:10 - 13:00.

Summary of Intended Learning Outcomes

Power Systems: Determine the behaviour of three phase machines and power systems in per-unit or absolute terms and convert freely between either medium. Describe, analyse, and solve graphically the steady state operation of synchronous motors and generators.
Represent complex loads and transmission systems and perform load flow calculations. Construct single-phase per-unit fault equivalent circuits of power systems and calculate fault levels and distribution of fault currents. Determine unbalanced current and voltage phasor systems and represent these as symmetrical components, converting freely between each representation. Work within a group to perform outline designs of an reinforcement of a rural power system and carry out an investment appraisal of the proposal.

Power Electronics: Be aware of the main power electronic devices currently available, and their basic operating characteristics from a users viewpoint. Be able to perform calculations on ideal DC chopper circuits. Have a good understanding of single and three phase thyristor controlled rectifier circuits, and be able to draw their output waveforms and perform simple calculations on them. Understand the reasons for using HVDC power transmission, and be able to perform power flow calculations. Be able to explain the operation of single and three phase inverter circuits, and draw their output waveforms.

Powerway: Work safely and competently with mains voltage power equipment and rotating electrical machines. Explain the operation of both the d.c. motor prime mover and the synchronous a.c. generator. Design a system consisting of rotating electrical machines and power electronic equipment to produce electricity at the correct voltage and frequency.