Bersimis II Powerkouse Plan Arrangement-Description of Apparatus

A plant designer´s view of an outdoor 850,000-hp (horsepower) hydroelectric plant in northeastern Quebec is presented. Twelve-foot spherical penstock valves have double seals. Steel scroll cases for the 171,000-hp turbines were completely assembled by welding in the field. Generators have self-lubricated bearings without oil lift for starting. Highspeed regulators provide for charging of long lines. A 6,000-amp (ampere) 15-kv isolated-phase bus is employed. Transformers step up to 300 kv. Control protection, station service, and accessory equipment are described.