Problem 1: Multiple Choices (10 points)
Questions 1 to 6: Please clearly circle the letter that containing your answer:
1. Which item is n_ot generally considered as one of the major functions of a power
system?
A. Generation
_/ B. Transformer
KC. Transmi
PROBLEMSET6TRANSIENTSTABILITY
Objective: Createaproblemthatdemonstratesandexplorestransientstabilityanalysis.
Problem: Given the balanced threephase power system below illustrates in PowerWorld
Example6_13.pwb, apply transient stability analysis. Initial
University of Southern
California EE 443
Lecture 7:
Transmission
Line
Parameters
Dr. Mohammed Beshir
February 27, 2014
Lecture #6 Outline
Collect Homework #6
Review Lecture #6
Chapter 3: Power Transformers
3.1 The Ideal Transformer
3.2 Equivalent Circuits
EE443 PROBLEM SET 2013
PROBLEM 2: FAULT TO CIRCUIT TRANSFORMATION
For this problem I will be analyzing a fault in the following circuit and deriving an equivalent one
line diagram consisting of a generator, transmission line and two transformers.
For this
EE 528
Power Electronics
Fall 2015
Homework for Week 3:
Part I.
Cuk converter circuit analysis with losses (100 points)
+
L1
+
V
V1g
C1
L2
D1
+
+
Q1
C2
R,V
R1
+
Figure 1.
Inductor L1 has series loss resistance RL1, inductor L2 has loss RL2, the on resista
EE 443
Exam 1 Problem (Fault Analysis)
Problem
In this problem, I will analyze the fault depicted in the circuit below (Figure 1). In
this circuit, the fault occurs at an unknown location on transmission line 2 and
produces a fault current of 4035
EE443
Assignment # 1
Professor Robert Castro
2.27: An industrial load consists of bank of induction motors consumes 50 kW at a power factor
of 0.8 lagging from a 220 V, 60 Hz, single phase source. By placing a bank of capacitors in
parallel with the load,
Problem #8
I designed this problem in order to demonstrate the concept of changing power flow
direction. I used the example 6.13 from the Power World in order to perform simulations. Here is
the initial case:
Figure 1
The outline to solve the problem:
Ch
On the Early History of Bessel Functions
JACQUES DUTKA
Communicated by CURTIS WILSON
1. Introduction
Linear diﬁ'erential equations of the second order are of fundamental import-
ance in physical and technological applications. Among the most frequently
en
Inaugural Event
PowerWorld Tutorial 1.0
Basic and Intermediate
(Free Admission)
Saturday, October 24th, 2015
5:00 p.m. 6:30 p.m.
Venue- USC EEB 248
Join us to get hands on experience on PowerWorld Simulator and learn how to perform
complex circuit constru
CODE 8701155 (REV. 2—?2]
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ENGINEERING DATA SHEET Sheemm
The General Balanced Three-Phase System
Most of the bulk electrical power throughout the world is transmitted in the
three-phase mode. This mode represents the minimum
EUE T20
SWITCHING SHUNT CAPACITORS
BY
W.l.KeIly
APPLICATION INFGRMATION
ELECTRIC UTILITY ENGINEERING SECTION
a E N E a A I. E LE 3 T n a c Switching Shunt Capacitors GET-2436
The symmetrical short—circuit current is,
_ 250,000
_\l§x13.8
=10,450 ampere
Case Study 2006 Heat Storm
A. Background
In 2006, Los Angeles had an unusually hot summer in 2006, that resulted in a
record number of outages (5.7% of our customers were affected).
A large portion of the outages were caused by transformer failures, whic
EE 528
Power Electronics
Fall 2015
Week 4 Homework: Semiconductor losses and efficiency, equivalent circuit analysis
Buck converter (100 points)
Q1
L1
Vg
D1
C1
R1, V
Figure 1
A buck converter is implemented with a MOSFET, Q1, and a diode, D1. The MOSFET h
University of Southern
California EE 443
Lecture 2:
Course
Introduction &
Fundamentals
Dr. Mohammed Beshir
January 23, 2014
EE 443: Introduction to Power
Systems - Syllabus
Prerequisite:
EE 370
Instructor:
Dr. Mohammed Beshir
Office: EEB 102C
Tel: 213-740
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EE443 Spring 2014
Homework #12: April 17, 2014
Text Book Chapter 5:
Multiple Choices: 12-16 and 20-23.
Problems: 23, 26, 38, 45, and 46.
Due Date: April 24, 2014
Solutions:
Multiple Choices: 12-16 and 20-23.
5.12 a
5.13 Real, imaginary
5.14 Inductive, c
EE443-Sp14 - PowerWorld Project
Purpose is to get hands-on experience with power system simulation of
large systems
We will use PowerWorld
Project Assignment: Do the following:
1. Power System Fundamentals Due 4/10/14
Section: 1.5, and Problems 2.32-3
EE443 Spring 2014
Homework #11: April 10, 2014
Text Book Chapter 5:
Multiple Choices: 7 and 8
Problems: 7, 14 and 15
Due Date: April 18, 2014
Solutions
Multiple Choices
Problems:
PowerWorld Project
Purpose is to get hands-on experience with power system simulation of
large systems
We will use PowerWorld
Project Assignment: Do the following:
1. Power System Fundamentals Due 4/10/14
Section: 1.5, and Problems 2.32-34; 3.60-61
2.
EE443 Spring 2014
Homework #10: April 3, 2014
Text Book Chapter 4:
Multiple Choices: 37, 38 and 39
Problems: 50 and 51
Text Book Chapter 5:
Multiple Choices: 1, 2, and 4
Problems: 1 and 2
Due Date: April 10, 2014
Solutions:
Multiple Choices:
4.37 20
4
EE443 Spring 2014
Homework #9: March 27, 2014
Text Book Chapter 4:
Multiple Choice: 19, 26- 28, 31 and 32
Problems: 32, 33, 39 and 40
Due Date: April 3, 2014
Solutions:
Multiple Choices:
Problems:
EE443 Spring 2014
Homework #4: February 6, 2014
Text Book Chapter 2
Multiple Choice: 2.21- 2.26 (Pages 78; 6 items)
Problems: 2.40 - 2.43 (Pages 86, four items)
Due Date: February 13, 2014
Solutions
Multiple Choices:
2.21 a
2.22 a
2.23 b
2.24 a
2.25 a
2
EE443 Spring 2014
Homework #3: January 30, 2014
Text Book Chapter 2
Multiple Choice: 2.7, 2.9, 2.13, 2.17, 2.19, and 2.20 (Pages 76&77)
Problems: 2.8, 2.9, 2.10, 2.15, 2.21, and 2.37 (Pages 80-85)
Due Date: February 6, 2014
ANSWERS TO MULTIPLE-CHOICE TY
1. For the circuit below determine:
a) the per unit impedance of the transmission line between bus 2 and bus 3
b) the base current at generator 1.
Use a base of 200MVA and 8kV at generator 2.
(15 points)
G1
T1
1
2
j10
100MVA
10kV
X=0.2 p.u.
100MVA
10kV/10
Lets look at an example of using the thermal energy of the conductor.
Example:
Suppose you have a 34.5kV transmission line that has of ice built up on it. There is a
real possibility of that ice pulling down those wires. Determine how much load it would
1. The hysteresis (B-H) curves of 3 transformers are shown below.
i) assume transformer a is designed to operate at 60 Hz.
Could it operate successfully at 400 Hz? Why or why
not?
Answer.) Yes, because the linear region is long enough
to accommodate it
ii