It is not a 30 day ceasefire but a 30 day ceasefire against attacking energy infrastructure. What is mentioned above is not considered energy. Zelensky has nothing to complain about. He back out of the original 30 day ceasefire. See above.
Electrical substations are part of the energy infrastructure, so it is a violation of the cease fire. But, bombing civilian infrastructure and especially hospitals is a war crime, so Russia are just criminals and we shouldn't be surprised, and it's not like Trump is all that against crime.