Electrical Equipment for Pumped Storage Plants

by Daniel A. Green, US Bureau of Reclamation, Denver, CO, USA,

Document Type: Proceeding Paper

Part of: Water Power '87


Selection of generator/motors and other electrical equipment for pumped storage plants requires consideration significantly different than for conventional hydro plants. This is particularly true for underground plants where machine sizes and system configuration must be balanced against excavation costs. The use of these plants in the power system, usually for peaking, also requires attention to the selection of machine characteristics for economic benefits. The benefits assigned to pumped storage projects can be enhanced if needs are made known to the designers. In particular, secondary modes of operation can be designed into the machines and auxiliary equipment. Some benefits have not been quantified but, nonetheless, deserve consideration. The notable example is improvement to system stability.

Subject Headings: Electrical equipment | Hydro power | Equipment and machinery | Power plants | Electric power | Energy storage | Economic factors

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