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ELE3804 Power Systems Protection

Semester 1, 2013 External Toowoomba
Units : 1
Faculty or Section : Faculty of Engineering & Surveying
School or Department : Electrical, Electronic & Computing
Version produced : 21 July 2014

Contents on this page

Staffing

Examiner: Tony Ahfock
Moderator: Leslie Bowtell

Requisites

Pre-requisite: ELE1801

Synopsis

Modern society cannot function without a reliable supply of electricity. However, an electrical power system that is completely free from failure is neither economically justifiable nor technically feasible. A power system or some part of the power system will, under certain abnormal circumstances, become faulted and as a result cease to operate as intended. A protection system, in the event of a fault, is required to maintain safety of personnel and members of the public, minimize damage to the power system, minimize interruption of supply and help maintain quality of supply. This course will help students develop the skills needed to design and carry out performance analysis of protection systems.

Objectives

The course objectives define the student learning outcomes for a course. On completion of this course, students should be able to:

  1. Explain the principle of operation of components used for implementing protection systems;
  2. Identify the key factors that influence the design of typical protection systems;
  3. Carry out quantitative analysis of the performance of typical protection systems;
  4. Devise protection schemes that are appropriate for particular applications.

Topics

Description Weighting(%)
1. Basic concepts: Power system structure; Per unit quantities 5.00
2. Basic Concepts: Symmetrical components; fault calculations 10.00
3. Relays and instrument transformers 15.00
4. Protection of radial feeders 15.00
5. Protection of non-radial transmission lines 15.00
6. Protection of power transformers 15.00
7. Bus zone protection 5.00
8. Protection of reactors and capacitors 5.00
9. Protection of Rotating Machines 15.00

Text and materials required to be purchased or accessed

ALL textbooks and materials available to be purchased can be sourced from USQ's Online Bookshop (unless otherwise stated). (https://bookshop.usq.edu.au/bookweb/subject.cgi?year=2013&sem=01&subject1=ELE3804)

Please contact us for alternative purchase options from USQ Bookshop. (https://bookshop.usq.edu.au/contact/)

  • Horowitz S H,& Phadke, A G 2008, Power System Relaying, 3rd edn, John Wiley & Sons, England.

Reference materials

Reference materials are materials that, if accessed by students, may improve their knowledge and understanding of the material in the course and enrich their learning experience.
  • Gers JM & Holmes EJ 2004, Protection of electricity distribution networks, IEE power and energy series, Institution of Electrical Engineers, Stevenage.
  • Johns AT & Salman SK 1995, Digital protection for power systems, IEE power series, Peregrinus, London.
  • Kalam, A & Kothari, DP 2009, Power system protection and communications, New Age Science, UK.
  • Phadke AG 2009, Computer relaying for power systems, 2nd edn, John Wiley & Sons, Hoboken, NJ.
    (Electronic resource.)

Student workload requirements

Activity Hours
Assessments 30.00
Directed Study 87.00
Examinations 2.00
Private Study 36.00

Assessment details

Description Marks out of Wtg (%) Due Date Notes
ASSIGNMENT 1 100 10 15 Apr 2013
ASSIGNMENT 2 200 20 24 May 2013
2 HOUR CLOSED EXAMINATION 700 70 End S1 (see note 1)

NOTES
  1. Student Administration will advise students of the dates of their examinations during the semester.

Important assessment information

  1. Attendance requirements:
    There are no attendance requirements for this course. However, it is the students' responsibility to study all material provided to them or required to be accessed by them to maximise their chance of meeting the objectives of the course and to be informed of course-related activities and administration.

  2. Requirements for students to complete each assessment item satisfactorily:
    To satisfactorily complete an assessment item a student must achieve at least 50% of the marks or a grade of at least C-. Students do not have to satisfactorily complete each assessment item to be awarded a passing grade in this course. Refer to Statement 4 below for the requirements to receive a passing grade in this course.

  3. Penalties for late submission of required work:
    If students submit assignments after the due date without (prior) approval of the examiner then a penalty of 5% of the total marks gained by the student for the assignment may apply for each working day late up to ten working days at which time a mark of zero may be recorded. No assignments will be accepted after model answers have been posted.

  4. Requirements for student to be awarded a passing grade in the course:
    To be assured of receiving a passing grade in a course a student must obtain at least 50% of the total weighted marks for the course.

  5. Method used to combine assessment results to attain final grade:
    The final grades for students will be assigned on the basis of the weighted aggregate of the marks (or grades) obtained for each of the summative assessment items in the course.

  6. Examination information:
    In a Closed Examination candidates are allowed to bring only writing and drawing instruments into the examination.

  7. Examination period when Deferred/Supplementary examinations will be held:
    Any Deferred or Supplementary examinations for this course will be held during the examination period at the end of the semester of the next offering of this course.

  8. University Student Policies:
    Students should read the USQ policies: Definitions, Assessment and Student Academic Misconduct to avoid actions which might contravene University policies and practices. These policies can be found at http://policy.usq.edu.au.

Assessment notes

  1. The due date for an assignment is the date by which a student must despatch the assignment to the USQ. The onus is on the student to provide proof of the despatch date, if requested by the Examiner.

  2. Students must retain a copy of each item submitted for assessment. This must be despatched to USQ within 24 hours if required by the Examiner.

  3. In accordance with University Policy, the Examiner may grant an extension of the due date of an assignment in extenuating circumstances.

  4. If electronic submission of assessments is specified for the course, students will be notified of this in the course Introductory Book and on the USQ Study Desk. All required electronic submission must be made through the Assignment Drop Box located on the USQ Study Desk for the course, unless directed otherwise by the examiner of the course. The due date for an electronically submitted assessment is the date by which a student must electronically submit the assignment. The assignment files must be submitted by 11.55pm on the due date using USQ time (as displayed on the clock on the course home page; that is, Australian Eastern Standard Time).

  5. If the method of assessment submission is by written, typed or printed paper-based media students should (i) submit to the Faculty Office for students enrolled in the course in the on-campus mode, or (ii) mail to the USQ for students enrolled in the course in the external mode. The due date for the assessment is the date by which a student must (i) submit the assessment for students enrolled in the on-campus mode, or (ii) mail the assessment for students enrolled in the external mode.

  6. The Faculty will NOT normally accept submission of assessments by facsimile or email.

  7. Students who do not have regular access to postal services for the submission of paper-based assessments, or regular access to Internet services for electronic submission, or are otherwise disadvantaged by these regulations may be given special consideration. They should contact the examiner of the course to negotiate such special arrangements prior to the submission date.

  8. Students who have undertaken all of the required assessments in a course but who have failed to meet some of the specified objectives of a course within the normally prescribed time may be awarded one of the temporary grades: IM (Incomplete - Make up), IS (Incomplete - Supplementary Examination) or ISM (Incomplete -Supplementary Examination and Make up). A temporary grade will only be awarded when, in the opinion of the examiner, a student will be able to achieve the remaining objectives of the course after a period of non directed personal study.

  9. Students who, for medical, family/personal, or employment-related reasons, are unable to complete an assignment or to sit for an examination at the scheduled time may apply to defer an assessment in a course. Such a request must be accompanied by appropriate supporting documentation. One of the following temporary grades may be awarded IDS (Incomplete - Deferred Examination; IDM (Incomplete Deferred Make-up); IDB (Incomplete - Both Deferred Examination and Deferred Make-up).

  10. Harvard (AGPS) is the referencing system required in this course. Students should use Harvard (AGPS) style in their assignments to format details of the information sources they have cited in their work. The Harvard (AGPS) style to be used is defined by the USQ Library's referencing guide. http://www.usq.edu.au/library/referencing