Problems Associated with Large Hydro Generators

by T. E. Goodeve, Ontario Hydro, Canada,
John F. Lyles, Ontario Hydro, Canada,

Document Type: Proceeding Paper

Part of: Waterpower '89


Since the early 1950s, hydro generators have increased in size from the 50 MVA range to much larger units employed today, many of which are in excess of 500 MVA. Such a tenfold increase in size introduces many design areas which require particular attention to detail if the generator is to provide long, trouble-free operation. Stator core-frame stability and long core stator windings are two areas which are particularly critical and unforgiving of marginal design or poor quality.

Subject Headings: Electrical equipment | Frames | Algorithms | Hydro power | Size effect

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