5.50. WRFILE

Purpose

Write values to a file.

Mathematical description

None

Parameters

Parameter	input	unit	range	default	remarks
CASE_O###.csv	integer	[-]	[0,999]		Number which gets appended to the casename
Time unit	ms/ s/ min/ hr
Output incr	integer	[-]			Output written every ‘output incr’ time-steps to the file

Remarks

The WRFILE component can be used to write results to a file, which can be read into a WANDA model or spreadsheet program at a later stage. The comment field of the WRFILE component will be used as a header in the output file.

The output file will be placed in the same directory as the Wanda case files. The name of the file will have the following format: <casename>_O###.csv. Where <casename> is the full name of the Wanda casefiles (without extension) and ### is the number entered in the component properties.

Examples

Figure 1 presents an example where the WRFILE component is used. The product of two different signals (a sine and a polynome) is written to a case related file with output number 48. The simulation time step is 1 s.

Fig. 5.50.1 Control scheme

The input of the WRFILE component is:

• Name: W1

• Comment: product sine*poly

• CASE_O###.csv: 48

• Time unit: s

• Output incr: 5

The WRFILE component writes the result of the multiplication of the two input signals to a file named “MyCase_O048.csv”. This file can be opened with any text editor or spreadsheet.

Fig. 5.50.2 Input signals

Fig. 5.50.3 Input signals after multiplication

The created file “MyCase_048.csv” contains two columns: The first column specifies the time, while the second column specifies the values given to the WRFILE component. The complete contents of the file “MyCase_048.csv” is shown below:

# Time [s]	product sine*poly
0.0000000E+00	0.0000000E+00
5.000000	42.07355
10.00000	-280.6266
15.00000	-1131.633
20.00000	7825.173