Replace univocity parsers with FastCSV for CSV handling - PSSE

[rolnico]

Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• A PR or issue has been opened in all impacted repositories (if any)

Does this PR already have an issue describing the problem?
No

What kind of change does this PR introduce?
Change of dependency

What is the current behavior?
PowSyBl uses univocity-parsers for handling CSV files (parsing and writing), but this lib is abandoned since 2021.

What is the new behavior (if this is a feature change)?
PowSyBl now uses FastCSV for handling CSV files.

Does this PR introduce a breaking change or deprecate an API?

• Yes
• No

If yes, please check if the following requirements are fulfilled

• The Breaking Change or Deprecated label has been added
• The migration steps are described in the following section

What changes might users need to make in their application due to this PR? (migration steps)

Other information:

[rolnico]

I did some tests to compare the performances of this version vs main. Each test consisted of exporting a network and then importing the network from the generated file. Each operation was performed 50 times consecutively, and the results are based on the last 30 draws.

Operation	File	main (ms)	fastCSV (ms)	Difference (ms)	Difference (%)
Export raw	Small XIIDM	195,742	106,556	-89,186	-45,56 %
Import raw	Small XIIDM	1506,259	500,980	-1005,279	-66,76 %
Export rawx	Small XIIDM	155,368	106,944	-48,424	-31,17 %
Import rawx	Small XIIDM	1530,821	498,977	-1031,844	-67,43 %
Export raw	Medium XIIDM	606,107	410,914	-195,193	-32,20 %
Import raw	Medium XIIDM	Import failed	Import failed	N/A	N/A
Export rawx	Medium XIIDM	481,962	413,829	-68,133	-14,13 %
Import rawx	Medium XIIDM	Import failed	Import failed	N/A	N/A
Export raw	Large XIIDM	1775,348	1008,594	-766,754	-43,18 %
Import raw	Large XIIDM	14669,229	4355,008	-10314,221	-70,34 %
Export rawx	Large XIIDM	1407,518	994,860	-412,658	-29,32 %
Import rawx	Large XIIDM	14663,221	4337,164	-10326,057	-70,45 %
Export raw	Micro CGMES	3,944	1,142	-2,802	-71,04 %
Import raw	Micro CGMES	11,786	2,475	-9,311	-79,03 %
Export rawx	Micro CGMES	4,849	1,212	-3,637	-75,00 %
Import rawx	Micro CGMES	12,641	1,946	-10,695	-84,63 %
Export raw	Large CGMES	689,397	524,541	-164,856	-23,91 %
Import raw	Large CGMES	Import failed	Import failed	N/A	N/A
Export rawx	Large CGMES	624,877	542,597	-82,280	-13,16 %
Import rawx	Large CGMES	Import failed	Import failed	N/A	N/A
Export raw	Test network	6,245	2,916	-3,329	-53,29 %
Import raw	Test network	Import failed	Import failed	N/A	N/A
Export rawx	Test network	6,461	2,299	-4,162	-64,39 %
Import rawx	Test network	Import failed	Import failed	N/A	N/A

We can see here that the performances are way better when using FastCSV.

Note: The exported files were checked and the only differences detected are due to an existing bug in the current PSS/E export

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
88.3% Coverage on New Code
2.3% Duplication on New Code

See analysis details on SonarQube Cloud