## PLANT AND ELECTRICAL DISTRIBUTION SYSTEMS

 SHE Level 3 SCQF Credit Points 20.00 ECTS Credit Points 10.00 Module Code M3H606273 Module Leader Shahab Farokhi School School of Computing, Engineering and Built Environment Subject Electrical Power Engineering Trimester A (September start)

### Pre-Requisite Knowledge

Electronic and Electrical Engineering (SD2)

### Summary of Content

This module examines electromagnetic and electromechanical energy conversion, electrical distribution systems and energy supply economics. An understanding of system components and their application will be developed. Plant and system models and analysis techniques (including computer-aided) to solve energy conversion and distribution problems will be developed. These techniques will be applied to the design, specification and selection of plant and distribution systems. Utility and non-utility supply options will be examined and evaluated.

### Syllabus

The taught syllabus will cover the following areas: Electromagnetic Devices: Calculation of flux, flux density, force, torque, energy, inductance, core loss, material properties, application to simple geometry's, use of simplifications. Finite Element Analysis: Mathematical background, application to electromagnetic problems, structure of computer package, solution of simple 2D problems for bulk and specific variables, validation of solution, limitations. Electrical Machines: Synchronous machine, equivalent circuit of cylindrical machine, power equation, load angle. Induction machine (3ph), equivalent circuit, parameters, parameter tests, efficiency and torque measurement and calculation. Application and selection, load characteristics (pump, fan, compressor, traction, etc), starting systems and protection. Induction machine (1ph), types, operating characteristics and application. Power Distribution: Principles of cable selection, co-ordination, discrimination and protection, characteristics of fuses, circuit breakers, cables, RCDs and LV switchgear; introduction to design standards and health and safety issues (IEE Wiring Regulations and Electricity at Work Act), hazard identification and risk reduction. High Voltage Systems: Switchgear, circuit breakers, fuses, busbars, isolation, earthing and interlocking, protection (relays), instrument transformers, radial and ring distribution, HV v MV/LV systems. Substation layout and safety requirements, short circuit calculations. Power System Economics: Economics of energy production, transmission, distribution and utilisation; load factor, diversity factor, maximum demand, power factor and its correction, analysis and selection of tariffs, factors influencing choice of supply, e.g. security, legal, environmental. Power Quality: Definition, categorisation, symptoms, Source and problems of power quality. Measurement of power quality. Mitigation of power quality problems, UPS and DVR etc.

### Learning Outcomes

On completion of this module the student should be able to:Analyse the performance of simple electromagnetic devices and electrical machines using an approximate equivalent circuit.Measure the performance of electrical machines and extract parameters of interest.Explain the principle of the finite element methods as used in the solution of field problems and solve basic 2D magnetostatic problems using this technique.Select/specify electrical machines and starting systems appropriate to application.Analyse utility tariffs and power factor. Evaluate options and select on basis of economic and technical merits.Analyse power quality problems. Identify PQ problems. Evaluate options and propose solutions.Describes the operating characteristics of distribution components.Design/specify a LV distribution scheme using ECAD and accepted standards and guidelines as appropriate.Specify a suitable layout for a HV distribution scheme and perform short-circuit calculations.

### Teaching / Learning Strategy

Study pack, study area in laboratory, demonstrations, practical exercises, design and case study, lectures and tutorials.

Recommended: 'Electrical Machines, Drives and Power Systems', Wildi, Prentice Hall, 3rd Edition, 1996. 'Principles of Electrical Machines and Power Electronics', P C Sen, John Wiley, 1989. 'Finite Elements for Electrical Engineers', P P Silvester, Ferrari, Cambridge University Press. 'Electrcal Installation Calculations', B D Jenkins, Blackwell Scientific Publications, 1992. Current edition of IEE Wiring Regulations (BS 7671) and Electricity at Work Regulations.

### Transferrable Skills

Critical Analysis, cognitive skills including ana;ysing and synthesising skills.

### Module Structure

Activity Total Hours
Lectures (PT) 36.00
Lectures (FT) 36.00
Tutorials (FT) 12.00
Practicals (PT) 12.00
Assessment (FT) 18.00
Independent Learning (FT) 110.00
Tutorials (PT) 12.00
Practicals (FT) 24.00
Independent Learning (PT) 130.00
Assessment (PT) 10.00

### Assessment Methods

Component Duration Weighting Threshold Description
Coursework 0.00 15.00 35% Design of Elec Service for a Building
Exam (Exams Office) 3.00 70.00 35% written examination
Coursework 0.00 15.00 35% Analysis of a Simple Machine using FE Method