Analysis of Transients in Power Systems

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Course Overview

Why do power system disturbances occur? How do you find the culprit of transient events? Can you analyze the complexities of the electric power system?

Learn to predict the outcome of transient events on power systems.  Construct power systems models, apply varying transient events, and, then, analyze the power system effects.  Design mitigation options and compare the effectiveness of the options.

If you are familiar with power systems, you will benefit. The case study approach introduces the various families of transients. It will also develop an in-depth understanding of the phenomenon. If you already have a detailed transients background, you will still expand your knowledge. Participate in exercises using the tool EMTP®. Attendees will receive time-limited access to the current version of EMTP®.

The course is set up to have online class lectures and discussions in the mornings and instructor-led hands-on analysis exercises in the afternoon each day to re-inforced concepts learned in the morning discussions.

Course highlights:

  • Introduction to the modeling tools for power systems analysis
  • Introduction to EMTP® using example case studies
  • Power system stability studies and electromechanical oscillation
  • Analysis of unbalanced systems
  • Inverter Based Resources (IBR)
  • Renewable energy studies
  • Circuit Breaker modeling & Practical Statistical and parametric studies

 Prior experience with EMTP® is not required.

Who Should Attend?

Engineering personnel familiar with the basics of electric power system analysis who need to get more in-depth knowledge of the analysis and simulation of power system transients in areas including:

  • Analysis of HV substations and transmission lines
  • Rotating machines dynamics
  • Application of inverter-based resources (IBR) and associated controls in power systems
  • HVDC and FACTS equipment
  • Distribution system and power quality studies
  • Wind power generation and interface issues

Course Outline

Day 1 - Morning (9am-12pm CST)

Theoretical background on Power Systems and Transients

  • Theoretical analysis methods and mathematical representation of power systems
  • The range of problems and frequencies: lightning, switching, and temporary overvoltages; electromechanical transients
  • Electromagnetic transients and traditional analysis methods

Numerical methods for the simulation of transients

  • Load-flow, Steady-state, Frequency scan
  • Initialization
  • Time-domain

Introduction to EMTP®

  • Overview, what EMTP can do
  • Power and Control devices
  • Devices and device attributes
  • Libraries
  • Tools
  • Simulation and analysis of simple transients

Day 1 – Afternoon (1pm-4pm CST): Modeling Exercises

Capacitor bank switching, hands-on exercise

  • Step-by-step development of studied circuit
  • Utilization of subnetworks, navigation, uniqueness
  • Masking
  • Frequency scan tool for finding natural frequencies
  • Required models

IEEE-34 bus distribution test case study, hands-on exercise

  • Multiphase power-flow
  • Automatic transition into initialized time-domain solution
  • Simulation of fault
  • Tap-changer control
  • Inclusion of local generation

Day 2 - Morning (9am-12pm CST)

Switching devices and simulation of power electronics circuits

Nonlinear devices: Modeling in steady-state and time-domain

Theory on Ferroresonance

Transmission/Distribution line and cable models

  • Theory and available models
  • PI-section, Constant Parameter model, Frequency-dependent models
  • Corona model
  • Application examples

Arrester model

Transformer models

Synchronous and asynchronous machine models and related controls

  • Case setup, controls, and automatic initialization
  • Exciters and Governors

Day 2 - Afternoon (1pm-4pm CST): Modeling Exercises

Ferroresonance case, hands-on exercise

Transmission line and cable transients, hands-on exercises

  • Switching transients, comparison of models
  • Line transposition
  • Induced voltages
  • Kilometric fault

Setup of a 500 kV transmission system, hands-on exercises

  • Initial simulations
  • Establishment of study scenarios
  • Transient stability analysis
  • Temporary overvoltages
  • Fault analysis

Day 3 - Morning (9am-12pm CST)

Circuit Breakers and Switching Studies

  • Types and interruption principle
  • Statistical studies
  • Statistical Case Exercise
  • Building a 3-phase general circuit breaker model

Day 3 - Afternoon (1pm-4pm CST): Modeling Exercises

Circuit Breakers and Switching Studies, hands-on exercises

  • Capacitor Switching
  • Transient Recovery Voltage
  • Capacitor Switch Exercise
  • TRV study exercise with TRV breaker model

Day 4 - Morning (9am-12pm CST)

Introduction to Wind turbine models: Type III and Type IV

  • Options
  • Protection
  • Initialization
  • Control system
  • Detailed park models, aggregation methods

Introduction to Photovoltaic models

Integration of renewable energies into existing power systems

  • Step-by-step procedure
  • Testing

Scanning tool for detecting subsynchronous control interaction problems

  • Step-by-step procedure
  • Benchmark cases

Day 4 - Afternoon (1pm-4pm CST): Modeling Exercises

Integration of Wind generation into an existing 500 kV system, hands-on exercises

  • Step-by-step integration of Type III and Type IV wind generators
  • Analysis of transients

Detection of instability, hands-on exercises

  • Step-by-step procedure
  • Verification


"Great course in general! Jean and Doug did a great job! This class is extremely beneficial to any engineer running transient analysis studies."
–Kevin T., PowerStudies, Inc.

"It’s good to learn from the leading experts on complicated transient subjects."
–Michael T., Chevron


Douglas Mader

Doug Mader received his education at the Technical University of Nova Scotia (now part of Dalhousie University) where he received his Bachelors Degree in Electrical Engineering with Distinction in 1973. He began his career at the Nova Scotia Power Corporation upon graduation and gained his Professional Engineer status in 1975. During his career at NSPC he rose to the position of Vice President Engineering of NS Power Services, the unregulated consulting subsidiary of Nova Scotia Power. He moved to Entergy Transmission Business in June of 1998 as Director Value Engineering, and in 2000 took over responsibility for all Transmission Business Engineering, Project Management, and Construction functions. In January of 2004 he was appointed Director, Technology Delivery and Business Unit CIO for Entergy transmission, and in 2007 Director if IT Infrastructure and Enterprise Services for Entergy Corporation. Mr Mader retired from Entergy in April 2014 and is now a private consultant to the electric power industry.

Jean Mahseredjian

Jean Mahseredjian, PHD and IEEE Fellow, is currently a professor at Polytechnique Montréal. He brings with him more than 30 years of research and development experience on power system transients, having spent 17 years at the Institut de recherche d'Hydro-Québec (IREQ) specializing in electromagnetic transient simulation and analysis. Jean is the creator and lead developer of EMTP.

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Program Director

Kevin Rogers

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