The pure electronic hydraulic control of No. 5 200 MW generating unit in Jingmen Cogeneration Power Plant is realized by retrofitting the original hydraulic governing system using DEH.

The driller operates the pumps, drawworks, and rotary table via the drillers console-a control room of gauges, control levers, rheostats, and other pneumatic, hydraulic and electronic instrumentation.

This paper deals with a system consisted of machine, hydraulic and electronic being used to control loading power and frequence of the hydraulic vibration exciting unit.