Network files

A network file is a text file that describes a network in a simple format that PowerFlow understands. The syntax of network files is best described by an example. The following example defines the network illustrated in the “General concepts” section:

# Lines beginning with # are ignored.

# The "grid" command indicates the start of a grid description.
# Since this is the first grid in the file, it will get ID 0.
grid

# S_base followed by V_base.
1000000000 10000

# Grid cables (edges) on the format: <start node> <end node> <impedance>.
# The % sign marks end of list.
0 1 (0.05, 0.05)
1 2 (0.05, 0.05)
1 3 (0.05, 0.05)
%

# Node types on the format: <node> <type>.
# <type> can be either s (SLACK), si (SLACK_IMPLICIT), l (LOAD)
# or li (LOAD_IMPLICIT).
# Nodes not listed here will automatically become MIDDLE nodes.
# The % sign marks end of list.
0 s
2 li
3 li
%

# Grid 1.
grid
10000000 400
0 1 (0.02, 0.02)
1 2 (0.05, 0.03)
%
0 si
2 l
%

# Grid 2.
grid
10000000 400
0 1 (0.02, 0.03)
0 2 (0.03, 0.03)
%
0 si
1 l
2 l
%

# Connections between grids on the format:
# <"upper" grid> <LOAD_IMPLICIT node in "upper" grid> <"lower" grid> <SLACK_IMPLICIT node in "lower" grid>
# The % sign marks end of list.
connections
0 2 1 0
0 3 2 0
%