Kogeneracyjne zespoły prądotwórcze z silnikami gazowymi na gaz z odmetanowania - praca generatorów w układach elektroenergetycznych kopalń Jastrzębskiej Spółki Węglowej S.A.

The article presents basic information about Jastrzębska Spółka Węglowa S.A. (Jastrzębie Coal Mine Company) as well as investments connected with building up cogenerative generator sets with gas engines using gas from demethanization of coal mines. The detailed data of generator sets – with special attention to generators – that works in "Borynia", "Budryk", "Krupiński"and "Pniówek" coal mines as well as their location at medium voltage grid of the mines power systems were provided. Cooperation with medium voltage grid (active and passive energy), the amount and way of utilization of the produced electrical energy and the share in satisfying mines demand were discussed. The attempt was made to motive evaluate of generators work in regard of source of satisfying mines power demand, influence of power system on medium voltage grid work, supply station restoration as well as way of power removal from generator sets.