Inconsistent removal of voltage level ids

[AnkurArohi]

Describe the current behavior

• In the current version when the voltage level is removed the other side of the voltage level has a corrupted status , this is even seen in a single line diagram.
• The issue is that the removal of the voltage level does not consistently remove all the elements, their aliases and their references,specifically leading to the inconsistent connection of the elements on the other side of the voltage level
• Lets take this example
  220/110 has a trafo , the 220kV has further two lines, and also a trafo connecting 220/10 kv level.
  When one tries to remove the 220kV voltage level the 110 kV voltage level and 10 kV voltage level has an inconsistent topology, this is probably because the removal is not proper, after the removal there are still some connections left.

Describe the expected behavior

• When the voltage level id is removed the other side of the voltage level should just have dangling lines and the topology should be consistent.

Describe the steps

• Load the network
• Identify a voltage level and remove the voltage level
• Export/write single line diagram for the connected voltage levels
• The SLD is inconsistent
• Export CGMES leads to an exception

Environment

• 0.22 version pypowsybl

Relevant Log Output

No response

Extra Information

No response