## ELECTRICAL SYSTEMS

 SHE Level 2 SCQF Credit Points 10.00 ECTS Credit Points 5.00 Module Code M2H624225 Module Leader Elaine Smith School School of Computing, Engineering and Built Environment Subject Electrical Power Engineering Trimester B (January start)

### Pre-Requisite Knowledge

Fundamentals of Electrical Engineering (M1H620498) or equivalent

### Summary of Content

This module examines electrical systems comprising of generation, transmission, distribution and load. An understanding of electrical power system components and their applications will be developed. Appropriate analytical techniques will be developed and these will be applied to the analysis of systems and components to determine operating performance. Components introduced in the module include power transformers, multiphase transmission systems, electrical motors and smart grids.

### Syllabus

Taught Syllabus will cover the following areas: Overview of a typical electrical distribution and utilisation system:- 3-ph/1-ph supply, interconnecting cables, transformers, loads (resistive and reactive including motors), over-current protection. Approaches to system analysis. Fundamental ac circuit theory. 3-Phase ac circuits: Balanced 3-phase systems, phasor representation. 3-wire and 4-wire connections, star and delta. Application to 3-phase LV distribution schemes. Analysis of resonant circuits. Power factor and power factor correction. Analysis of 3-phase systems (current, voltage relationships, complex power and power factor). Transformers. Principle of operation. Voltage, current and turns ratio. Design and analysis of practical transformers (construction, features, characteristics, losses and magnetising current). Equivalent circuit and its application.. DC Motor. Construction and features, torque production, pm and separately excited machines, Characteristics and applications. Analysis using equivalent circuit model. Induction Motor: Principle of operation (rotating field, induction and slip). Construction and features. Losses. Characteristics (starting and running) and applications. Analysis using equivalent circuit model. Electrical system design: Overview of conventional and renewable energy generation systems.

### Learning Outcomes

On completion of this module the student should be able to:1. Describe in detail the features, characteristics and application of a range of electrical system components2. Analyse an overall electrical system comprising of a supply, distribution and load.3. Understand the usage of each electrical system architecture and sub-component, with an understanding of factors affecting their efficiency and operation.4. Use analytical techniques to investigate, characterise and modify the behaviour of electrical system components such as distribution transformers and 3-phase networks.5. Use analytical techniques and specialist software simulation tools to model and compute the behaviour of complex electrical circuits, deriving fundamental metrics such as phase relationships, voltage relationships, resonant frequencies, power factor, transformer efficiencies, losses and regulation.6. Perform fundamental calculations and design studies relating to power generation.7. Carry out a structured design project, incorporating all aspects of system design for a small-scale electrical system.

### Teaching / Learning Strategy

The module will consist of lectures, tutorials, supported laboratory exercises consisting of computer based simulations, web-based resources and communication tools and guest lectures from industry. These will be underpinned through a study pack, demonstrations, practical exercises and directed studies. Students will be encouraged to learn independently through problem solving, and design exercises.

Essential: - Electrical Circuit Theory and Technology, J Bird, Routledge, 2013 Recommended: - Electrical and Electronic Technology, E Hughes, Pearson Prentice Hall, 2012 - Principles of Electric Machines and Power Electronics, P C Sen, Wiley, 2013 - Electricity Distribution Network Design, E Lakerri, T Holmes, IEE Publications, 2003

### Transferrable Skills

A1 Knowledge and understanding of scientific and mathematical principles and methodology necessary to underpin their education in their engineering discipline and to enable them to apply mathematical methods, tools and notations proficiently in the analysis and solution of engineering problems. A2 The engineering principles, concepts, and theories relevant to their own engineering discipline and other engineering disciplines and an awareness of developing technologies related to their own engineering specialism. A3 The analytical methods, modelling techniques, computer models and software tools relevant to their engineering discipline in order to solve engineering problems. A4 Structured design processes and methodologies and a systems approach to engineering problems and product design. A5 The commercial and economic context of engineering activity and the management techniques, which may be used to achieve engineering objectives within that context. B1 Apply mathematical methods and scientific and engineering principles proficiently in the analysis, synthesis, performance assessment, critical appraisal and evaluation of electronic systems. B2 Select and apply appropriate analytical and computer based methods for modeling and analysing engineering problems. B3 Select and apply appropriate computer software tools to the synthesis, implementation, evaluation, analysis and solution of electronic problems and systems. B4 Investigate and define a problem and identify constraints including environmental and sustainability, health and safety and risk assessment issues. C1 Demonstrate proficiency in the use of specialist equipment, development tools, materials and processes employed in the design, production and testing of electronic systems. C6 Apply project management and business practices appropriately. Specialist knowledge and application. Critical thinking and problem solving. Critical analysis. Communication skills, written, oral and listening. Numeracy. Effective Information retrieval and research skills. Computer literacy. Self confidence, self discipline & self reliance (independent working). Awareness of strengths and weaknesses. Creativity, innovation & independent thinking. Ability to prioritise tasks and time management (organising and planning work). Interpersonal skills, team working and leadership. Presentation skills. Commercial awareness

### Module Structure

Activity Total Hours
Assessment (PT) 9.00
Lectures (FT) 12.00
Tutorials (PT) 12.00
Independent Learning (FT) 55.00
Tutorials (FT) 12.00
Assessment (FT) 9.00
Independent Learning (PT) 61.00
Practicals (FT) 12.00
Practicals (PT) 6.00
Lectures (PT) 12.00

### Assessment Methods

Component Duration Weighting Threshold Description
Exam (Exams Office) 2.00 50.00 35% Exam (Exams Office)
Coursework 1 n/a 50.00 35% Written Laboratory Assignments