Combined Exciter/Governor System

Combined Exciter/Governor System

Combined Exciter/Governor System 2220 1264 REIVAX

Combined Excitation/Governor system delivered for a 3.3MVA hydro unit in Canada, replacing a Woodward Gate Shaft mechanical governor and an AVR with obsolete components

The project scope included:

  • One (1) cabinet for excitation and governor control including some unit automation functions
  • Electrical-hydraulic interface for the existing wicket gate distribution valve
  • Speed sensing system

By eliminating hardware associated with a separate governor controller and a separate excitation controller, a combined controller is able to achieve a higher Mean Time Between Failure (MTBF), hence increasing the overall reliability of the generating unit.

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