Sequential Load Flow
Param
Description
The block specifies
the parameters used by the sequential AC-DC load flow
algorithm having the form of a script (LF_ACDC_solve_V2_1). The sequential
load flow script is called by clicking Compute.
Parameters
AC-DC network model
Specify
the name of the AC network model
Maximum iterations for
the DC load flow solution
Maximum
number of iterations allowed calculating the DC solution
Maximum sequential
AC-DC load flows
Maximum
number of sequential load flows allowed calculating the total solution
Execute
Call
the script to compute the sequential AC-DC load flow.
DC link steady-state
model name
Specify
the name of the DC link steady-state model. At least one DC link must be
present in network.
DC link load flow
report name
Specify
the name of report file containing the results of the AC and DC load flows.
Rectifier AC bus name
Specify
the name of the AC bus at which the rectifier of the DC link is connected.
PQ load name
(Rectifier)
Specify the name the "PQ load” representing the rectifier
converter unit loading during load-flow computation.
Note: Refers
to the "Three-Phase Dynamic Load” block.
A PQ load should be inserted in the network model at each converter AC
bus. Only the nominal voltage and frequency are set.
Inverter AC bus name
Specify
the name of the AC bus at which the inverter of the DC link is connected.
PQ load name
(Inverter)
Specify the name the "PQ load” representing the inverter converter
unit loading during load-flow computation.
Second DC link
If
selected, indicate presence of a second DC link in the network.
Second DC link
steady-state model name
Specify
the name of the DC link steady-state model. At least one DC link must be
present in network.
Second DC link load
flow report name
Specify
the name of report file containing the results of the AC and DC load flows.
Second rectifier AC
bus name
Specify
the name of the AC bus at which the rectifier of the second DC link is
connected.
PQ load name (Second
rectifier)
Specify the name the "PQ load” representing the rectifier
converter unit.
Second inverter AC bus
name
Specify
the name of the AC bus at which the inverter of the second DC link is
connected.
PQ load name (Second
inverter)
Specify
the name the "PQ load” representing the inverter converter
unit.
Model LF_AC29bus_HVDCdemo_V2_1 represents
an AC network in which a two terminal HVDC link (Link A) is embedded between nodes LG27 and MTL7. In order to find the system load flow
solution using the sequential AC-DC method the block Sequential Load Flow Param is included.
The two PQ loads are added to represent the converters unit charging and are
only effective during the load flow solution computation. See the File Exchange
Demo Sequential AC-DC load flow method
for two-terminal HVDC networks – Version 2.
MATLAB release MATLAB 9.1 (R2016b)