||TRANSIENT ANLAYSIS AND STABILITY
||1 Term (online) or 1 Semester (on-campus)
Master of Engineering ( Electrical Systems )
Duration: 2 years
|Unit Creator / Reviewer
||Dr.Tony Auditore Prof. Trevor Blackbur (G. Vijay / Steve Mackay)
Master total course credit points = 48
(3 credits x 12 (units)+ 12 credits ( Thesis ))
|Mode of Delivery
||Online or on-campus.
10 hours per week
Lecture: 1 hour
Tutorial Lecture- 1 hour
Practical/ Lab- 1 hour ( where applicable)
Personal Study recommended- 7 hours ( guided and unguided)
Unit Description and General Aims
The unit introduces engineers to the principles of power system stability under different system events including power system disturbances and evaluates system stability by utilizing an accurate power system dynamic model.
The unit will discuss the basic aspects of system stability theory and will cover topics of transient stability, small signal stability and voltage stability. Methods of improving stability in practical systems will also be discussed. The behaviour of a system under electromagnetic
transients caused by switching and lightning transients and its effect on cables and lines, synchronous machines and switchgear will be discussed also.
After covering the necessary theory, the unit will introduce practical studies involving the simulation of various system conditions using an appropriate software tool and interpreting the results obtained. This part will also include the estimation of machine parameters and the use of dynamic parameter estimation tools to compare estimated results from multiple sets of simulations involving model parameters and implement the most accurate results into the generator models.
1. Attain the required theoretical knowledge on power system stability principles and
demonstrate the ability to accurately model a power system for carrying out different
stability studies described in the subsequent outcomes.
Bloom’s Level 6
2. Demonstrate the ability to simulate small disturbances in the modelled system and
study the effect on system stability.
Bloom’s Level 6
3. Demonstrate the ability to simulate large disturbances, and identify and evaluate the
Bloom’s Level 6
4. Establish through the studies the ability of the modelled power system to maintain
steady voltages at all buses in the system after being subjected to a disturbance from
a given initial operating condition.
Bloom’s Level 6
5. Simulate and analyse power system transient phenomena at microsecond-level such
as switching and lightning transients.
Bloom’s Level 6
6. Draw and present conclusions on improving the models and practical measures to
improve the different stability aspects.
Bloom’s Level 5
(e.g. Assessment -2000 word essay (specify topic)
Examination ( specify length and format))
(e.g week 5)
|Weighting (% of total unit marks)
||Learning Outcomes Assessed
Type: Multi-choice test / Group work / Short answer questions / Role Play / Self-Assessment / Presentation
Topic Examples: Stability, transient stability and system modelling
Type:Report / Research / Paper / Case Study/ Site Visit/ Problem analysis/ Project / Professional recommendation
Example:Report (Midterm Project)
[This will include a progress report; literature review,hypothesis, and methodology
Word length: 1000
Topic examples: Report on Transient stability
Type: Report (Final Project)
[If a continuation of the midterm, this should complete the report by adding sections on: methodology,implementation /evaluation, verification/ validation,conclusion/ challenges and recommendations/ future work. If this is a new report, all headings from the midterm and the final reports must be included.]
Word length: 2000
Topic examples : Continuation of midterm
Example: May be in the form of quizzes, class tests,
practical assessments , remote labs, simulation software or case studies
Example: Software packages on renewable energy
Attendance / Tutorial Participation
Example: Presentation, discussion, group work, exercises, self-assessment/reflection, case study analysis, application.
||1 - 6
Prescribed and Recommended readings
•P. Kundur, Power System Stability and Control. McGraw-Hill, 1994– ISBN: 0-07-035958-X
•remia and Shahidehpour, Handbook of Electrical Power System Dynamics: Modeling,
Stability, and Control,IEEE Press Series on Power Engineering. Wiley, 2013
•IDC / EIT notes and Reference texts as advised.
•Other material advised during the lectures
One topic is delivered per contact week, with the exception of part-time 24-week units, where one topic is delivered every two weeks.
Fundamentals of transient analysis
Considerations, definitions, power system components, loads, steady -state stability, electromagnetic
phenomena, electromechanical dynamics
Power system stability basics
Classification of stability,rotor angle stability, transient stability, frequency stability, voltage stability,
and stability enhancement; PowerWorld simulator for transient analysis
Topics 3 and 4
Rotor angle stability
Small disturbance angle stability, transient stability, swing equation, damping power, steady-state
stability, transient power-angle characteristic, 3-phase fault, critical clearing time and angle, unbalance
faults, auto-closing, effect of AVR, swings in multi-machine systems, synchronization.
Topics 5 and 6
Voltage stability, electromagnetic transients
1. Generation aspects, transmission system aspects, load aspect, load curve, PV curve, QV curve,
PQ curve, analysis with static loads, loadability limit, sensitivity analysis, stability criteria,
continuation power flow analysis and instability mechanism examples, avoidance of voltage
instability, prevention of voltage collapse, reactive power control.
2. Lightning surges including induced surges, switching transients for single pole and 3 pole
switching, capacitor switching and high speed reclosing; switchgear transient recovery voltage
(TRV) and effect on overhead line and cable systems.
Topics 7 and 8
Frequency stability and small signal analysis
System frequency-power characteristics, frequency sensitivity coefficients, operating frequency,
frequency deviations, spinning reserve and frequency collapse, under frequency load shedding,
frequency regulation, defense plan against a frequency drop, primary frequency control -
turbine governor, small signal modeling and analysis, secondary frequency control and aut
omatic generation control (AGC).
1. High speed fault clearing, power system stabilizers, steam turbine fast valving, breaking
resistor, generator tripping, shunt FACTS device, series compensator, UPFC
2. Introduction to advanced topics in power system dynamics, economic dispatch and optimal
power flow problems
3. Stability with renewable energy sources
Topics 10 and 11
1. Using any industry standard software package, the students will carry out modelling and
simulation exercises on a given power system and identify problems areas. The studies will
include topics in power system transient analysis and stability. The students
will interpret the results of the study and will present their recommendations on stability improvement
2. Investigate and simulations studies into advanced topics in power system dynamics and
Project and Revision
In the final week students will have an opportunity to review the contents covered so far. Opportunity
will be provided for a review of student work, to clarify any outstanding issues, and to work on
finalizing the major assessment report.