Pandapower converter: Fix compatibility issues with upcoming pandapower release.

[furqan463]

Fixes issue: #330

Changes proposed in this PR include:

1. In "res_line_3ph" and "res_trafo_3ph", p_a_l_mw is changed to pl_a_mw, and so on for q and other phases
2. In loads, const_z_percent, const_i_percent are replaced with const_z_p_percent, const_z_q_percent, const_i_p_percent, const_i_q_percent

Updated pandapower_converter.py

Checks

• Need to fix unit and validation tests.
• Need to verify ref_version after which existing code breaks.

[furqan463]

@mgovers This is working with older PP version here, and I've tested it locally with latest repo of pandapower-develop. Please review.

[mgovers]

The change looks good to me. Please also update the validation test input data loader. Otherwise, it's good to go.

[mgovers]

I ran the following tests:

• create and load virtual environment
• check that main works with original pandapower
  • git checkout main && git pull
  • editable install of main
  • install and upgrade pandapower to latest release
  • run all tests: This proves that the original main is in a good state
    • unit tests
    • validation tests
• verify that main fails with latest pandapower
  • clone pandapower@develop
  • install cloned pandapower@develop
  • rerun all tests
    • unit tests PASS
    • validation tests FAIL!!!
      • This proves that this PR is necessary
• verify that this branch solves the latest pandapower incompatibilities
  • checkout this PR gh pr checkout 333
  • install this PR (optional if the previous installation was as an editiable)
  • rerun all tests
    • unit tests PASS
    • validation tests PASS
      • This proves that this PR solves the issue
      • All deprecation warnings regarding pandapower are resolved: TODO
• verify that this branch is backwards compatible
  • install latest version pandapower
  • rerun all tests
    • unit tests PASS
    • validation tests PASS
      • This proves that this PR is backwards compatible

[furqan463]

@mgovers please check commit bfcb72d I noticed that pandapower converter is putting "index" column in pandapower line and trafo tables, thereby altering the input pandapower network. This commit will fix this issue as well. As this issue results in pp.nets_equal to fail while comparing copy of a network with original after running load flow with pp.runpp_pgm.

[mgovers]

FYI: pandapower released version 3.2.0 so this now has high prio. I will jump in.

[mgovers]

thanks for fixing the missing files issue @furqan463 .

I hereby approve. @nitbharambe can you please re-approve as well?