GENERATION DISPATCH
Economic Dispatch of Fossil Units
Chee-Mun Ong, Purdue University
EE432 Economic Dispatch
1
Heat Rate/Fuel Cost vs Output Power
heat input rate of i th unit that is operating at
H
Nodal Admittance Equation of Networks
Node Admittance Equation (NAE)
Formulation of the Node Admittance Equation
Forming Ybus
Modifying Ybus and including branches with mutually coupling
Comments
ECE 432 Homework Set 1
1.
The rms voltage and rms current at the terminals a and b of a network component are
found to be
o
o
Vab 110 10
V
Iab 80 ( 210 )
A
Vab is the rms voltage of terminal a with re
ORIGIN 1
j
1
Given the following system data with per unit value on the equipment own base:
3
VG1rated 13.2 10
3
VG2rated 13.2 10
Generator 1
SG1rated 30 10 VA
Generator 2
SG2rated 60 10 VA
Transform
Line Series Parameters
Resistance of line conductor
Inductances
flux linkage and inductances
single-phase line
bundled conductor line
three-phase line
double-circuit line
Chee-Mun Ong, Purdue U
Power Flow Solution
Problem Formulation
Gauss Iteration Methods
Chee-Mun Ong, Purdue University
EE432 Power Flow Calculations
1
Mathematical Representation and Constraints to Consider in the
Steady-
Transmission Line Models and Analysis
Lumped parameter circuit models
Series RL
Nominal P
Distributed parameter circuit model
Equivalent P circuit model
Chee-Mun Ong, Purdue University
EE432 Tran
THREE-PHASE
SYNCHRONOUS MACHINES
construction
equivalent
i l t circuit
i it off round
d rotor
t synchronous
h
machine
hi
tests to determine equivalent circuit parameters
phasor diagrams for motoring
Single-Phase Transformer
construction and uses
voltage and current relations of an ideal transformer,
referred impedance
equivalent circuit
derivation
determining the parameters of the equivalent
3-phase Circuits
3-phase system
Wye (Y) and Delta () connections
Relationship of line and phase quantities in Y and
3-phase power expressions
Per-unit system
Chee-Mun Ong, Purdue University
EE43
Nodal Admittance Equation of Networks
Node Admittance Equation (NAE)
Formulation of the Node Admittance Equation
Forming Ybus
Modifying Ybus and including branches with mutually coupling
Comments
Power Flow Solution
Problem Formulation
Gauss Iteration Methods
Chee-Mun Ong, Purdue University
EE432 Power Flow Calculations
1
Mathematical Representation and Constraints to Consider in the
Steady-
The Bus Impedance Model and Network
Calculations
bus impedance matrix Zbus
Thevenins equivalent and Zbus
modifying Zbus
building Zbus by adding one element at a time
obtaining Zbus from Ybus using mat
Symmetrical Fault Calculations
dc offset a function of point of wave on the supply voltage
at which a RL line is energized
effective reactances of synchronous generator
use of Zbus in fault calculatio
Line Shunt Parameter
Review
- Gauss Law , electric potential
Capacitance of line conductor
Effect of the presence of ground
Chee-Mun Ong, Purdue University
EE432 Transmission Line Shunt Parameter
1