Electrical Transients in Power Systems
Lecture #1
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
In this first lecture we will cover the following topics:
Course Overview
Lumped circuit elements
State space techniques
Differentia

Electrical Transients in Power Systems
Lecture #4
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
October 10, 2015
In this lecture we will cover the following topics:
Transients in three-phase circuits (Greenwood, section 6)
Switchi

Electrical Transients in Power Systems
Lecture #5
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
October 31, 2015
In this lecture we will cover the following topics:
Transients on Transmission Lines (Greenwood, chapter 9)
Circuits

Electrical Transients in Power Systems
Lecture #3
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
August 8, 2015
In this lecture we will cover the following topics:
TRV (Greenwood, section 3.3)
Load switching (Greenwood, section 4.6

Electrical Transients in Power Systems
Lecture #6
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
October 31, 2015
In this lecture we will cover the following topics:
Transients on Transmission Lines (Greenwood, chapter 9)
Examples

Electrical Transients in Power Systems
Lecture #2
Slobodan Pajic and Kevin A. Clements
Worcester Polytechnic Institute
July 18, 2015
In this lecture we will cover the following topics:
Examples
Systematic procedures for Writing Governing Equations for L

ECE 5511
FALL 2015
TRANSIENTS IN POWER SYSTEMS
Homework Assignment # 1
Due Date: July 18, 2015
1) Find solution to the following equation having the specied initial value
x + 4x = 0
x(0) = 1
x(0) = 0
2) Solve the following initial value problem
x = y
y =

ECE 5511
FALL 2015
TRANSIENTS IN POWER SYSTEMS
Homework Assignment # 3
Due Date: August 29, 2015
1) In the circuit of Fig. 1 the switch is changed instantaneously from position 1 to 2. The
circuit parameters are:
R1 = 2
R2 = 10
L = 0.1H
C = 0.8mF
Vs = 1

ECE 5511
FALL 2015
TRANSIENTS IN POWER SYSTEMS
Homework Assignment # 2
Due Date: August 8, 2015
1) Find1 the inverse Laplace transform of
a)
s+17
s2 +4s5
b)
3s5
(s+1)(s2 +2s+5)
c)
16s+43
(s2)(s+3)2
t=0
i(t)
+
L
C
Figure 1: Problem 2
Figure 2: Problem 3
2)

ECE 5511
FALL 2015
TRANSIENTS IN POWER SYSTEMS
Homework Assignment # 4
Due Date: September 14, 2015
submit by midnight EST to e-mail: ece5540.ept@gmail.com
1) Greenwood problem 3.12. Confirm your results by doing a MATLAB simulation of
the circuit.
Note: