ELEC ENG 3021 - Electric Energy Systems

North Terrace Campus - Semester 1 - 2016

Modelling and analysis of electric energy systems: single-phase and three-phase circuits (real and reactive power, per-unit systems); Electromechanical energy conversion (construction, modelling and characteristics of transformers, DC, induction and synchronous machines); Electric energy transmission and distribution (modelling of transmission lines, system analysis, control of voltage, power and frequency).

  • General Course Information
    Course Details
    Course Code ELEC ENG 3021
    Course Electric Energy Systems
    Coordinating Unit School of Electrical & Electronic Engineering
    Term Semester 1
    Level Undergraduate
    Location/s North Terrace Campus
    Units 3
    Contact Up to 7 hours per week
    Available for Study Abroad and Exchange Y
    Assumed Knowledge ELEC ENG 1009, or ELEC ENG 1100 or ELEC ENG 1101
    Assessment written exam, assignments, practicals
    Course Staff

    Course Coordinator: Associate Professor Wen Soong

    Course Coordinator and Lecturer: Assoc. Prof. Wen Soong
    Email: wen.soong@adelaide.edu.au
    Office: Ingkarni Wardli 3.53
    Phone: 8313 4117

    Lecturer: Dr Andrew Allison
    Email: andrew.allison@adelaide.edu.au
    Office: Ingkarni Wardli 3.51
    Phone 8313 5283
    Course Timetable

    The full timetable of all activities for this course can be accessed from Course Planner.

  • Learning Outcomes
    Course Learning Outcomes
    1. Apply power engineering circuit calculation methods including: phasors, complex power, real and reactive power flow, power-factor correction, equivalent series and parallel RL circuits. In addition, apply three-phase AC circuit analysis concepts including: balanced systems, power flow, star/delta, three-phase terminology, single-phase equivalent circuits and power measurement.
    2. Explain electromagnetic concepts and analyse problems related to transformers used in power systems. This includes:
    a) Magnetostatics : magnetic circuits, mmf, flux, reluctance, magnetic flux density, magnetic field intensity, permeability, Ampere’s law, concepts of leakage, fringing and saturation;
    b) Electromagnetics: flux-linkage, inductance, Faraday’s law, induced voltage, magnetic energy and force;
    c) Magnetic materials: saturation, BH loops, iron loss, permanent magnets; and
    d) Transformers: ideal transformers, back-emf equation, practical transformers, referred quantities.
    3. Explain the operating principles, analysis, construction and equivalent circuits for DC machines.  Analyse their performance as a motor or generator using the equivalent circuit.
    4. Explain the operating principles, analysis, construction and equivalent circuits of induction machines.  Describe the meaning of slip and airgap power.  Analyse their performance  as motors and generators using the equivalent circuit, the torque equation and the maximum torque relationship.
    5. Explain the operating principles, analysis, construction and equivalent circuits of synchronous machines.  Describe the meaning of rotor angle and excitation.  Analyse their performance using a per-unit system as motors and generators using the equivalent circuit.
    6. Describe the characteristics of the major components of an electric power system (generation, transmission, distribution and loads), the construction and modelling of transmission lines, and real and reactive power system control.  Perform simplified analysis of the sending and receiving end voltage of transmission lines, and the flow of real and reactive power in power systems.
    7. Develop practical skills in performing tests on electrical machines to determine their parameters and performance.  Analyse and discuss the results in experimental reports.
    University Graduate Attributes

    This course will provide students with an opportunity to develop the Graduate Attribute(s) specified below:

    University Graduate Attribute Course Learning Outcome(s)
    Deep discipline knowledge
    • informed and infused by cutting edge research, scaffolded throughout their program of studies
    • acquired from personal interaction with research active educators, from year 1
    • accredited or validated against national or international standards (for relevant programs)
    Critical thinking and problem solving
    • steeped in research methods and rigor
    • based on empirical evidence and the scientific approach to knowledge development
    • demonstrated through appropriate and relevant assessment
    Teamwork and communication skills
    • developed from, with, and via the SGDE
    • honed through assessment and practice throughout the program of studies
    • encouraged and valued in all aspects of learning
  • Learning Resources
    Required Resources
    The following required resources are available on the course website:
    Lecture notes: you can print these yourself, or purchase them from EEESAU (the local student branch of the Electrical and Electronic Engineering student society) at the beginning of the semester at reasonable cost, see signs around the Ingkarni Wardli building.
    Online tests: these are both available and submitted on the course website.
    Tutorial questions: these are available on the course website in the week leading up to the tutorial.
    Recommended Resources
    1) Practice problems are available on the course website for most of the course segments. Some of these will be used in the online tests and tutorial questions.

    2) Reference Books
    The course lecture notes should provide sufficient information for most students, however you may find the following reference books useful if you are have difficulty with the material or are interested in learning more about any of the topics in this course.
    Copies of the following books are available in the Barr Smith library.
    • T. Wildi : “Electrical Machines, Drives, and Power Systems”, Prentice Hall, 6th edition.
    • P.C. Sen: "Electric Machines and Power Electronics Principles", Wiley, 2nd edition.
    Online Learning
    All course announcements will be made the course website. They will be available on the course announcement board.

    The weekly online tests are conducted on the course website.

    The use of the course discussion boards is strongly encouraged for questions relating to course material. Lecturers will make a best effort to respond promptly to questions raised on the discussion boards.

    The course gradebook will be used to return continuous assessment marks. Students should check the Gradebook regularly and confirm their marks have been correctly entered.

    Audio (and if facilities are available, also video) recordings of lectures will be made available on the course website. The video recordings consist of the image displayed on the digital projector. Note some lecture theatres have two digital projectors and in this case only the content displayed on one of the projectors will be available.

    In addition, the following material will be provided on the course website at the start or during the course of the semester:
    • Lecture notes and tutorial questions
    • Past exams and quizzes
    • Additional exercise problems
  • Learning & Teaching Activities
    Learning & Teaching Modes
    1. Review of Power and Energy
    2. Electric Energy Systems Analysis
    3. Electromagnetics and Transformers
    4. Review of Electrical Machines Basics
    5. Review of DC Machine Analysis
    6. Review of AC Machines
    7. Induction Machines
    8. Synchronous Machines
    9. Introduction to Power Generation and Energy Systems
    This material is presented in lectures and supported by problem-solving tutorials, formative online tests and optional exercise problems.

    Tutorial problems should be attempted before the tutorial and this preparation is assessed at the start of each tutorial. The tutor will also go through selected questions on the board and students will be given opportunities to ask questions.

    Online tests are automatically marked. Wrong answers are indicated and correct answers are provided. Students may attempt an online test as many times as they wish before its due date, but on each attempt will have to try all questions again. Some numerical values in questions may change between attempts. Students will be awarded the maximum mark from all of their attempts of a particular online test.

    10. Application Lecture
    This lecture gives an example of the practical application of the theory taught in the course. It is not examinable.

    The information below is provided as a guide to assist students in engaging appropriately with the course requirements.

    This is a 3 unit course. The University expects students to spend around 156 hours of work for a 3 unit course. This corresponds to roughly 12 hours per week. The following breakdown is a guide only. Some students will need to spend more time, some less.
    Activity Contact Hours Non-contact Hours Number Total Hours
    Lectures 1 1 (prep & revise*) 30 60
    Special Lectures 1 0 1 1
    Tutorials 1 2 (prep & revise*) 6 18
    On-line Tests 0 3 (prep & revise*) 10 30
    Practicals 3 9 (prep & write-up) 4 48
    Total 157
    * This includes time spent revising for the quizzes and the exam.
    Learning Activities Summary
    1. Introduction
    3 lectures
    1.1 Introduction to electrical machines, mechanical and electric power, efficiency, energy costs

    2. Electric Energy Systems Analysis
    3.5 lectures
    2.1 DC circuit analysis revision.
    2.2 AC circuit analysis: phasors, complex power (real, reactive, apparent power), real and reactive power flow, power-factor correction, equivalent series and parallel RL circuits.
    2.3 Three-phase AC circuit analysis: balanced systems, power flow, star/delta, three-phase terminology, single-phase equivalent circuit, power measurement.

    3. Electromagnetics and Transformers
    5 lectures
    3.1 Magnetostatics: magnetic circuits, mmf, flux, reluctance, magnetic flux density, magnetic field intensity, permeability, Ampere’s law, concepts of leakage, fringing and saturation.
    3.2 Electromagnetics: flux-linkage, inductance, Faraday’s law, induced voltage, magnetic energy and force. C.3 Magnetic materials: saturation, BH loops, iron loss (eddy-current, hysteresis), permanent magnets.
    3.3 Transformers: ideal transformers, back-emf equation, practical transformers (construction, equivalent circuit, analysis).

    4. Review of Electrical Machines Basics
    1.5 lectures
    4.1 Types of machines: DC, AC (induction, synchronous and universal), torque vs. speed curves, variable-speed operation.

    5. Review of DC Machine Analysis
    2.5 lectures
    5.1 Linear and rotary DC machines, principles, construction, equivalent circuit analysis, torque vs. speed curves, generator and motor operation.

    6. Review of AC Machines
    1.5 lectures
    6.1 Rotating magnetic fields, synchronous machine principles and operation, induction machine principles and operation.

    7. Induction Machines
    4 lectures
    7.1 Applications, construction, principles, equivalent circuits, performance prediction

    8. Synchronous Machines
    4 lectures
    8.1 Per-unit analysis: principles, base quantities, conversion, analysis.
    8.2 Synchronous machines: applications, construction, principles, equivalent circuits, performance prediction.

    9. Introduction to Power Generation and Energy Systems
    4 lectures
    9.1 Generation, transmission, distribution and usage.
    9.2 Transmission lines: physical construction, transposition, modelling, nominal π-equivalent circuit, surge impedance loading, use of multiple phase conductors.
    9.3 Power system control: real and reactive power flow for lossless inductive line, reactive power control (effect on voltage, generators, synchronous compensators, static compensators), real power control (effect on frequency, generators).

    10. Application Lecture
    1 lecture
    10.1 To be announced.
    Specific Course Requirements
    Laboratory clothing restrictions apply to the workshop sessions: closed-toe shoes; covered shoulders; long hair must be tied back. In addition, students must remove all hand and wrist based jewellery (including material bracelets), and must not eat or drink in the laboratories. Failure to adhere to these requirements will result in your removal from the laboratory.
  • Assessment

    The University's policy on Assessment for Coursework Programs is based on the following four principles:

    1. Assessment must encourage and reinforce learning.
    2. Assessment must enable robust and fair judgements about student performance.
    3. Assessment practices must be fair and equitable to students and give them the opportunity to demonstrate what they have learned.
    4. Assessment must maintain academic standards.

    Assessment Summary
    Item Date Weight Type Learning Objectives Notes
    Examination 55% Summative 1 to 6 closed book, bring calculator, formula sheet provided
    Quiz 10% Summative 1 to 3 during one lecture slot, formula sheet provided, covers lecture material covered to that point
    Tutorial Preparation
    5% Formative 1 to 6 Mark out of 3:
    1 = attended,
    2 = attempted half the questions,
    3 = attempted all questions
    Online Tests
    10% Formative 1 to 6 These are submitted via the course website, they can be attempted multiple times and the best result is what is recorded.
    Practical Sessions 20% Summative 7 There is no opportunity to redeem a poor mark. Special arrangements may be put in place if you miss a session on medical grounds.
    Assessment Related Requirements
    A hurdle requirement is defined by the University's Assessment for Coursework Programs policy as "...an assessment task mandating a minimum level of performance as a condition of passing the course.

    In the Electric Energy System course there are two hurdle requirements, for which it is necessary to achieve at least 40% in,
    • examination
    • experimental section
    If both of these are not achieved, the total course mark will be limited to a maximum of 49.

    If a student fails to meet a hurdle requirement (normally no less than 40%),and is assigned a total mark for the course in the range of 45-49, then the student is entitled to an offer of additional assessment of some type. The type of assessment is to be decided by the School Assessment Review Committee when determining final results. The student’s final total mark will be entered at no more than 49% and the offer of an additional assessment will be specified eg. US01. Once the additional assessment has been completed, this mark will be included in the calculation of the total mark for the course and the better of the two results will apply. Note however that the maximum final result for a course in which a student has sat an additional assessment will be a “50 Pass”.

    If a student is unable to meet a hurdle requirement related to an assessment piece (may be throughout semester or at semester’s end) due to medical or compassionate circumstances beyond their control, then the student is entitled to an offer of replacement assessment of some type. An interim result of RP will be entered for the student, and the student will be notified of the offer of a replacement assessment. Once the replacement assessment has been completed, the result of that assessment will be included in the calculation of the total mark for the course.

    It is important to note that there is no replacement assessment offered for the practical component.
    Assessment Detail
    See the notes for each assement summary item in the table above.
    All written submissions to assessment activities are to be submitted electronically on the specified date and must be accompanied by a signed cover sheet. Copies of blank cover sheets are available from the School office in IW 3.26.

    Late submissions of the experimental reports will be accepted but with a 20% penalty per day (or part of). All formative and summative assessments will have a two week turn-around time for provision of feedback to students.

    Full details can be found on the School website:
    Course Grading

    Grades for your performance in this course will be awarded in accordance with the following scheme:

    M10 (Coursework Mark Scheme)
    Grade Mark Description
    FNS   Fail No Submission
    F 1-49 Fail
    P 50-64 Pass
    C 65-74 Credit
    D 75-84 Distinction
    HD 85-100 High Distinction
    CN   Continuing
    NFE   No Formal Examination
    RP   Result Pending

    Further details of the grades/results can be obtained from Examinations.

    Grade Descriptors are available which provide a general guide to the standard of work that is expected at each grade level. More information at Assessment for Coursework Programs.

    Final results for this course will be made available through Access Adelaide.

  • Student Feedback

    The University places a high priority on approaches to learning and teaching that enhance the student experience. Feedback is sought from students in a variety of ways including on-going engagement with staff, the use of online discussion boards and the use of Student Experience of Learning and Teaching (SELT) surveys as well as GOS surveys and Program reviews.

    SELTs are an important source of information to inform individual teaching practice, decisions about teaching duties, and course and program curriculum design. They enable the University to assess how effectively its learning environments and teaching practices facilitate student engagement and learning outcomes. Under the current SELT Policy (http://www.adelaide.edu.au/policies/101/) course SELTs are mandated and must be conducted at the conclusion of each term/semester/trimester for every course offering. Feedback on issues raised through course SELT surveys is made available to enrolled students through various resources (e.g. MyUni). In addition aggregated course SELT data is available.

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  • Policies & Guidelines
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    Students are reminded that in order to maintain the academic integrity of all programs and courses, the university has a zero-tolerance approach to students offering money or significant value goods or services to any staff member who is involved in their teaching or assessment. Students offering lecturers or tutors or professional staff anything more than a small token of appreciation is totally unacceptable, in any circumstances. Staff members are obliged to report all such incidents to their supervisor/manager, who will refer them for action under the university's student’s disciplinary procedures.

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