UNDERGROUND HYDRAULIC-ACCUMULATING ELECTRIC POWER STATION Russian patent published in 1997 - IPC

FIELD: hydraulic power engineering. SUBSTANCE: power station has machine hall accommodated in hollow cut out in rock mass and is made in the form of coaxially located upper chamber 1 and lower chamber 2 interconnected through shafts 3 with their diameter equal to inner diameter of generator housings of hydraulic power unit 3 located in lower chamber 2 of machine hall. Floor of upper chamber 1 is positioned on one level with floors of transformer hall 6 and transportation tunnel 7. Hoisting crane equipment is accommodated in upper chamber 1 of machine hall. Auxiliary equipment is located in lower chamber 2. EFFECT: high efficiency. 4 dwg