fixed some imports from pandapower. (#650) #11

Job	Run time
linting (3.11, ubuntu-latest)	1m 4s
relying (3.9, ubuntu-latest)	1m 58s
build (3.9, ubuntu-latest)	1m 39s
docs_check (3.11)	56s
linting (3.11, windows-latest)	4m 40s
relying (3.9, windows-latest)	7m 15s
build (3.9, windows-latest)	6m 56s
relying (3.10, ubuntu-latest)	1m 52s
build (3.10, ubuntu-latest)	1m 42s
relying (3.10, windows-latest)	6m 59s
tutorial_tests (3.9, ubuntu-latest)	2m 1s
build (3.10, windows-latest)	6m 34s
relying (3.11, ubuntu-latest)	2m 3s
build (3.11, ubuntu-latest)	2m 16s
tutorial_tests (3.9, windows-latest)	5m 34s
relying (3.11, windows-latest)	5m 5s
build (3.11, windows-latest)	7m 38s
tutorial_tests (3.10, ubuntu-latest)	2m 2s
relying (3.12, ubuntu-latest)	1m 52s
build (3.12, ubuntu-latest)	1m 47s
tutorial_tests (3.10, windows-latest)	7m 1s
relying (3.12, windows-latest)	6m 40s
build (3.12, windows-latest)	6m 4s
tutorial_tests (3.11, ubuntu-latest)	2m 22s
tutorial_tests (3.11, windows-latest)	5m 3s
tutorial_tests (3.12, ubuntu-latest)	2m 7s
tutorial_tests (3.12, windows-latest)	6m 24s
	1h 47m 34s

Provide feedback