Last Updated S012021

MEE514

Unit Name SYSTEM STABILITY ANALYSIS
Unit Code MEE514
Unit Duration 12 weeks
Award

Graduate Diploma of Engineering ( Electrical Systems )

Duration: 1 year

Master of Engineering ( Electrical Systems )

Duration: 2 years   

Year Level One
Unit Creator / Reviewer Ujjwal Datta
Core/Elective: Core
Pre/Co-requisites MEE513
Credit Points

3

Master total course credit points = 48

(3 credits x 12 (units)+ 12 credits ( Thesis ))

Mode of Delivery Online or on-campus. 
Unit Workload

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, frequency and voltage stability. The operation of FACTS devices and storage systems and their impacts on improving the stability of practical systems will also be discussed. The behaviour of a system under electromagnetic transients caused by switching and lightning transients and its effect on synchronous machines will also be discussed. In addition, the unit will analyse the stability contribution from renewable energy sources and discuss stability enhancement measures as a result of the integration of renewable systems.

After covering the necessary theory, the unit will introduce practical studies involving the simulation of various system conditions using an appropriate commercially preferred software tool and interpreting the results obtained.

Learning Outcomes

On successful completion of this Unit, students are expected to be able to:

  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

  1. Demonstrate the ability to design and simulate small disturbances and study the effect on system stability.

Bloom’s Level 6

  1. Demonstrate the ability to simulate large disturbances, and identify and evaluate the respective parameters.

Bloom’s Level 5

  1. 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

  1. Simulate and analyse power system transient phenomena at microsecond-level such as switching and lightning transients.

Bloom’s Level 4

  1. Develop the understanding of design improvement, adaptation in practical measures, appropriate equipment selection to improve different stability aspects.

Bloom’s Level 5

Student assessment

Assessment Type

(e.g. Assessment -2000 word essay (specify topic)

Examination ( specify length and format))

When assessed

(After Topic 5)

Weighting (% of total unit marks) Learning Outcomes Assessed

Assessment 1

Type: Multi-choice test / Group work / Short answer questions / Role Play / Self-Assessment / Presentation

Topic examples: Stability, transient stability and system modelling
After Topic 5 20% 1, 2

Assessment 2

Type: Report / Research / Paper / Case Study / Site Visit / Problem analysis / Project / Professional recommendation

Example: Report (Midterm Project)
[This will include the study of existing power system and building a new model]

Topic examples: Simulation modelling on Transient stability of large power system, creating a power system model in PowerWorld,
After Topic 8 25% 1,2,3,4

Assessment 3

Type: Report (Final Project)

[This will include the study of power flow and validation with the software model and transient analysis of the given example]

Topic examples: Fast decoupled/newton Raphson method and validation with PowerWorld model. Transient analysis of capacitive/inductive switching and an in-depth analysis of the observations.
After Topic 10 35% 4,5,6

Assessment 4 Practical Participation

Type: May be in the form of quizzes, class tests, practical assessments, remote labs, simulation software or case studies

Example: Software packages- Matlab for calculating power output, critical clearing angle and time during pre/post/during fault periods.
 
 
Final Week 15% 5,6

Attendance / Tutorial Participation

Example: Presentation, discussion, group work, exercises, self-assessment/reflection, case study analysis, application.

Continuous 5%   -

 

Prescribed and Recommended readings

Required Textbook(s)

  • Jan Machowski, Janusz W. Bialek, Dr Jim Bumby, Power System Dynamics: Stability and Control, 2nd Edition, 2008 - ISBN-13: 978-0470725580
  • Narain G. Hingorani, Understanding FACTS, 1999 -  ISBN:9780780334557

Reference Materials

  • P. Kundur, Power System Stability and Control. McGraw-Hill, 1994 – ISBN: 0-07-035958-X
  • R. Mohan Mathur,  Rajiv K. Varma, Thyristor-Based FACTS Controllers for Electrical Transmission Systems, 2002, ISBN: 978-0-471-20643-9
  • Eremia and Shahidehpour, Handbook of Electrical Power System Dynamics: Modeling, Stability, and Control, IEEE Press Series on Power Engineering. Wiley, 2013
  • Articles from https://ieeexplore.ieee.org/Xplore/home.jsp and https://www.sciencedirect.com/
  • IDC / EIT notes and Reference texts as advised.

Unit Content

One topic is delivered per contact week.

 

Topic 1

Fundamentals of Power System Stability

  1. Considerations
  2. Definitions of power system components
  3. Electromagnetic phenomena
  4. Electromechanical dynamics
  5. Classification of stability
  6. Steady-state stability
  7. Transient stability
  8. Frequency stability
  9. Voltage stability

 

Topic 2

Rotor Angle Stability - 1

  1. Small disturbance angle stability
  2. Transient stability
  3. Swing equation
  4. Damping power
  5. Steady-state stability
  6. Transient power-angle characteristic
  7. Deriving the equation describing the motion of rotor angle and modelling in Matlab

 

 

Topic 3

Rotor Angle Stability - 2

  1. 3-phase fault
  2. Critical clearing time and angle
  3. Unbalance faults
  4. Auto-closing
  5. Effect of AVR
  6. Swings in multi-machine systems
  7. Synchronization
  8. Determining critical angle and clearing time using Matlab

 

Topic 4

Voltage Stability – Electromagnetic Transients

  1. Generation, transmission system and load aspects
  2. Load curve, PV curve, QV curve and PQ curve
  3. Analysis with static loads, loadability limit, sensitivity analysis
  4. Stability criteria
  5. Prevention of voltage instability and voltage collapse
  6. Reactive power control
  7. Lightning surges including induced surges
  8. Switching transients for single-pole and 3-pole switching
  9. Capacitor switching and high-speed reclosing
  10. Switchgear transient recovery voltage (TRV) and effect on overhead line and cable systems

 

Topic 5

Voltage Stability – Network Equations

  1. Simulink/PowerWorld modelling on switching transients (inductive/capacitive)
  2. Nodal admittance matrix and nodal network equation
  3. Linearization and solution of power network equations
  4. Distributed generation (DG) penetration and voltage stability issues

 

Topic 6

Frequency Stability and Control

  1. System frequency-power characteristics
  2. Frequency sensitivity coefficients
  3. Operating frequency and frequency deviations
  4. Spinning reserve and frequency collapse
  5. Under frequency load shedding
  6. Frequency regulation
  7. Defense plan against a frequency drop
  8. Primary frequency control - turbine governor
  9. Secondary frequency control and automatic generation control (AGC)

 

Topic 7

Small Signal Stability Analysis

  1. Distributed generation (DG) penetration and frequency stability issues
  2. Small signal modeling and analysis
  3. Simulation studies in PowerWorld for small signal stability analysis

 

Topic 8  

Stability Enhancement – FACTS Devices - 1

  1. FACTS devices- modelling and working principles of SVC, STATCOM and TCSC/TSSC

 

Topic 9

Stability enhancement - FACTS Devices - 2
 
  1. Modelling and working principles of UPFC
  2. Simulation studies for stability analysis in different scenarios: with and without renewable energy sources and FACTS devices application (Matlab/Simulink, PowerFactory)

 

Topic 10  

Stability Enhancement – Renewable Farm’s Contribution

  1. Stability contribution from renewable energy sources (RES): voltage, frequency support
  2. Control design of RES farms for stability support
  3. Detailed simulation modelling on RES control (Matlab/Simulink)

 

Topic 11 

Stability Enhancement – Energy Storages

  1. Battery energy storage
  2. Fuel cell and ultra-capacitor
  3. Modelling and application for stability improvement in (Matlab/Simulink, PowerFactory)

 

 

Topic 12

Project and Revision

In the final week, total course contents will be briefly discussed. 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.

 

 

Engineers Australia

The Australian Engineering Stage 1 Competency Standards for the Professional Engineer, approved as of 2013. This table is referenced in the mapping of graduate attributes to learning outcomes and via the learning outcomes to student assessment.

Stage 1 Competencies and Elements Competency
1. Knowledge and Skill Base
1.1 Comprehensive, theory based understanding of the underpinning natural and physical sciences and the engineering fundamentals applicable to the engineering discipline.
1.2 Conceptual understanding of the mathematics, numerical analysis, statistics, and computer and information sciences which underpin the engineering discipline.
1.3 In-depth understanding of specialist bodies of knowledge within the engineering discipline.
1.4 Discernment of knowledge development and research directions within the engineering discipline.
1.5 Knowledge of engineering design practice and contextual factors impacting the engineering discipline.
1.6 Understanding of the scope, principles, norms, accountabilities and bounds of sustainable engineering practice in the specific discipline.
2. Engineering Application Ability
2.1 Application of established engineering methods to complex engineering problem solving.
2.2 Fluent application of engineering techniques, tools and resources.
2.3 Application of systematic engineering synthesis and design processes.
2.4 Application of systematic approaches to the conduct and management of engineering projects.
3. Professional and Personal Attributes
3.1 Ethical conduct and professional accountability.
3.2 Effective oral and written communication in professional and lay domains.
3.3 Creative, innovative and pro-active demeanour.
3.4 Professional use and management of information.
3.5 Orderly management of self and professional conduct.
3.6 Effective team membership and team leadership.

Software/Hardware Used

Software

  • Software: MATLAB/SIMULINK; PowerWorld (optional); PowerFactory (optional)

  • Version: Student version

  • Instructions:  N/A

  • Additional resources or files: N/A

Hardware

  • N/A