Environmental Engineering Reference
In-Depth Information
Iteration
i
= 0
Read input system data
and node classifications
Employ system data to
build the system
admittance matrix
Initialise complex
voltages at all nodes
Calculate active and
reactive power
mismatches
Is
convergence
ε ” satisfied?
Yes
No
Form and calculate
Jacobian matrix
Update voltages and
phase angles
Account for the iteration
i = i + 1
Data output of system
voltages, load flows,
generation, losses, etc.
Figure 3.5
Flow diagram of the electrical load flow algorithm using
Newton-Raphson
Once the pressure magnitudes are determined, flows in pipes are obtained after-
wards. Finally, after the losses in pipes are computed, the net flow injection provided
by the slack node can be calculated. Similar to Figure 3.5, Figure 3.6 presents a
flow diagram of the basic Newton-Raphson load flow algorithm for natural gas
systems.
 
Search WWH ::




Custom Search