Product Center >> Hydro Turbine Governor >> YWCT series of High Hydraulic Impact or Microcomputer Governor

Introduction of YWCT series governor

YWCT series of high hydraulic impact or microcomputer governor consists mainly of three parts, the microcomputer controller, hydraulic servo and the oil pressure devices.
The hardware adopts modular construction with the characteristics of highly dependability, compact structure, convenient operation, high liability, fast response time, easy to operate, repair, and expansion, etc..
It is exclusively used in controlling the high water-head power stations and the inclined type water turbine generator units.

The microcomputer controller adopts the imported programmable logic controller as central control unit, and touch screen as the human-machine friendly interface. The Ethernet, RS232, RS422 or RS485 are used as communication interface. Both AC and DC power supply systems were put into the speed governor, which can transfer into manual operation when the AC or DC functionalities have gone.

The hydraulic slave system adopts the digital proportional valve to drive hydraulic servomotor directly, without bothering the mechanical lever and clearing oil pipeline system, solving the traditional problem of components susceptible to jamming because of electro-hydraulic converter. The installation of hydraulic servomotor uses an external form and will be connected with the speed governor directly by pressure tubing.

The hydraulic device adopts the bladder accumulators that can cancel the high pressure air system to save investment for the power station.

The YWCT type high hydraulic impact or microcomputer governor adopts adaptive variable structure, changing the parameters and parallel PID regulating mode, which can materialize the various operation of the Units such as automatic switch, shut down, frequency modulation, increase or decrease of the load, emergency shut-down etc, all of which can be controlled by the governor from the machine or even remote control. The net frequency adjustment can be automatically traced in no-load condition and quick grid-connection without impulse. This software has strong functions in self diagnosis, fail-safe, fault-tolerant and error correction to ensure the unitís safe operation. Furthermore, it could configure the color touch screen, improve governorís water level control and regulate the power according to the userís needs.

Basic parameters of YWCT series governor



PID Parameters Setting Range

Proportional Gain


Integral Gain

0-10 1/s

Derivative Gain

0-5 s

Permanent speed droop


Artificial Frequency Dead Band


Frequency Setting


Gate Opening Setting


Power Setting


Electric Gate Opening Limited Setting


Rated Operating Oil Pressure


The model code of the YWCT series governor
1. Dynamic characteristics Y: Governor with servomotor and peltry energy accumulator
2. Regulator features W: Microcomputer electro hydraulic governor
3. Object class C: Impulse hydraulic turbine governor
4. Product type T: Governor

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