Microcomputer Hydro Turbine Governor 6MPa Oil Pressure Unit for Speed Control

Microcomputer Hydro Turbine Governor

This governor replaces relay or older electronic governors on existing units. It controls guide vane opening and, on Kaplan units, blade angle, using a microcomputer controller with a 6 MPa oil pressure unit. Auto, manual and test modes are available, and setpoint can be adjusted locally or remotely.

Selling Points

• Microcomputer controller. PID control with frequency, power and opening modes, plus a manual backup channel in case the controller is out of service.
• 6MPa oil pressure unit. Compact oil pressure unit with screw pump, accumulator and safety valve, reducing the space needed in the governor gallery.
• Self diagnosis. Controller logs alarms and start stop events, with digital inputs for oil level, oil pressure and filter clogging.
• Remote communication. Modbus or Ethernet interface for plant SCADA, plus isolated digital and analog signals for the existing control room.

Product Parameters

Supply Scope

• Microcomputer governor controller cabinet
• Oil pressure unit with pump, accumulator and valves
• Servomotor with position feedback
• Speed and opening sensors
• Operation manual and parameter setting record

Station Data Required

• Turbine type and rated speed
• Servomotor size and stroke
• Existing power supply and control interface
• Required communication protocol

Why This Unit

Retrofitting a microcomputer governor usually improves frequency stability and removes the maintenance burden of relay type controls. The 6 MPa oil pressure unit keeps cabinet size small, which matters when the governor gallery of an old station has limited floor space, and the manual channel keeps the unit operable while the controller is being serviced.

Packing and Delivery

The unit is protected with rust preventive coating, fixed on a steel skid or packed in a seaworthy wooden case. Electrical parts are packed in moisture proof bags. Site drawings, test reports and the operation manual are supplied with the shipment.

About DSSD

Deyang Dongsen Hydropower Equipment Co., Ltd. is based in Deyang, Sichuan, China and has supplied turbine generator sets and EPC services for more than 500 hydropower stations since 2007, covering Francis, Kaplan, Tubular, Pelton and Turgo units from 100 kW to 50 MW under an ISO 9001 quality system.