# CCN2270 Introduction to Electrical Systems

```June 2015
The Hong Kong Polytechnic University
Hong Kong Community College
Subject Description Form
Subject Code
CCN2270
Subject Title
Introduction to Electrical Systems
Level
2
Credit Value
3
Medium of
Instruction
English
Pre-requisite /
Co-requisite/
Exclusion
Nil
Objectives
This subject provides an overview of the supply, utilisation and control
of electrical energy. It introduces energy and environmental issues
which assist students in developing different perspectives towards
electrical power generation. It also provides students with fundamental
knowledge of the major equipment deployed in an electrical energy
system.
Intended Learning
Outcomes
Upon completion of the subject, students will be able to:
(a) describe the fundamental knowledge of electrical power systems.
(b) use mathematics and engineering techniques to solve problems
related to transformers and rotating electrical machines.
(c) describe the importance of equipment characteristics
environment issues on the modern electrical power system.
and
(d) identify appropriate tests or methods to obtain parameters in
equivalent models for transformers, overhead lines and rotating
electrical machines.
Subject Synopsis/
Indicative Syllabus
Nature of Electrical Energy System
Power system layout, transmission and distribution structure, role of
transformers; The interconnected power system; HVDC transmission;
Power system protection concepts.
Generation, Energy and Environment
Principles of energy conversion, power plant and busbar layout, types of
generators and turbines; Concept of generation control and performance
chart; Renewable and non-renewable sources; Sources of pollution and
environmental impacts.
Transformers
1
June 2015
Construction and operating principles; Equivalent circuits and per-unit
system; 3-phase winding connections and phase grouping; Voltage
regulation; Parallel operation.
Transmission Lines and Cables
Overhead line construction; Primary (RLCG) and general (ABCD)
parameter calculations; Line Equations and performance chart; Corona
loss and interference; Cables types and construction; Electrical stress
calculation; Thermal characteristics.
Rotating Electrical Machines
Basic operating principles of D.C. machines, induction motors and
synchronous machines.
Teaching/Learning
Methodology
Lectures will focus on the introduction and explanation of the major
theorems and mathematical techniques used in the analysis of different
electrical machines and components in the power system.
Tutorials will provide students with the opportunity to reinforce their
understanding of the concepts taught in lectures. Laboratory sessions
will be used to illustrate and assimilate certain principles of electrical
machines’ operations.
Assessment
Methods in
Alignment with
Intended Learning
Outcomes
A variety of assessment tools will be used to develop and assess
students’ achievement of the subject intended learning outcomes.
Specific assessment
%
weighting
Intended subject learning
outcomes to be assessed
a
b
c
d
9
9
Continuous
Assessment*
40
 Test
16
9
9
 Individual
Assignment 1
8
9
9
 Individual
Assignment 2
8
9
 Laboratory Report
8
9
Final Examination
60
Total
100
9
9
9
9
9
9
9
9
*Continuous assessment items and/or weighting may be adjusted by the subject
team subject to the approval of the College Programme Committee.
To pass this subject, students are required to obtain Grade D or above in
both the Continuous Assessment and Final Examination.
Student Study
Class contact
Hours
2
June 2015
Effort Expected
 Lecture
26
 Tutorial / Laboratory
13
Other student study effort
References
 Self-study
52
 Continuous Assessment
42
Total student study effort
133
Recommended Textbook
Grainger, J &amp; Stevenson, W (1994). Power system analysis. (1st ed.),
McGraw Hill.
Schavemaker, P &amp; Sluis, L (2008). Electrical power system essentials.
Wiley.
References
Saadat, H (2010). Power system analysis. (3rd ed.), PSA Publishing.
Schlabbach, J &amp; Rofalski, K (2008). Power system engineering:
planning, design, and operation of power systems and equipment.
Wiley.
Kiameh, P (2012). Power generation handbook. (2nd ed.), McGraw Hill.
Chapman, S. J. (2002). Electric machinery and power system
fundamentals. (1st ed.), McGraw Hill.
Blume, S W. (2007). Electric power system basics for the nonelectrical
professional. Wiley-IEEE Press.
3
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