Abstract: The paper presents an overall introduction to the development of technologies and products of hydroturbine governor in China, and makes a review on the latest technology innovation with respect to the speed governor ' s system structure mode, the structure of microcomputer regulator, diversified electro-hydraulic conversion components, the system redundancy, the computer simulation test, and the friendly man-machine interface with abundant information as well as the hydraulic pressure levels. It is indicated that the main performance indexes of hydroturbine microcomputer governor have generally met the requirements of the state technology standard, with some at the international advanced level. Problems worth attention by the industry are also discussed, and the prospect is looked forward.

Key words: hydroturbine , microcomputer governor , Industrial Personal Computer , electro-hydraulic conversion , servo system , technology innovation