Russian to English Science Energy / Power Generation Wind power

Does anyone know what these acronyms could mean in a wind power facility context, in which nuclear power is involved in the triggering of the control systems?

I honestly have no idea and have looked everywhere so I was wondering whether one could just transcribe the acronyms to 'ADV overhead lines' and 'LADV overhead lines'.

The acronyms are present in the following phrase:
На АОВМ ВЭС возлагается реализация УВ от АДВ ВЛ 330 кВ Кольская АЭС – Княжегубская №1(2) и ЛАДВ ВЛ 330 кВ Княжегубская – Лоухи №1(2) путём выдачи управляющего сигнала на отключение генераторов ВЭС, или на вход группового регулятора мощности ВЭС, направленного на снижение генерации.

Thank you for your help in advance!