20140317145901_62786

Neweras Develop Limited Contact: Mr. Jack Chen MP: 86 15002143331 Skype: chysir Email: [email protected] Web: ww.newerasdevelop.com Address: Room 808, No.45, East Yanan Road, Shanghai, China

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

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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 unit’s safe operation. Furthermore, it could configure the color touch screen, improve governor’s water level control and regulate the power according to the user’s needs.

Basic parameters of YWCT series governor

Item Value

PID Parameters Setting Range

Proportional Gain 0-10

Integral Gain 0-10 1/s

Derivative Gain 0-5 s

Permanent speed droop 0-10%

Artificial Frequency Dead Band 0-±0.5Hz

Frequency Setting 45-55Hz

Gate Opening Setting 0-100%

Power Setting 0-120%

Electric Gate Opening Limited Setting 0-100%

Rated Operating Oil Pressure 10.0/16.0MPa

The model code of the YWCT series governor

1. Dynamic characteristics Y: Governor with servomotor and peltry energy accumulator2. Regulator features W: Microcomputer electro hydraulic governor3. Object class C: Impulse hydraulic turbine governor4. Product type T: Governor




YWT series high hydraulic microcomputer governor

Introduction of YWT series high hydraulic governor

YWT series high hydraulic microcomputer governor consists of microcomputer governor, 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..

Apply to small and medium sized mixed-flow, tubular fixed plasma type, axial given paddle and the impact water-turbine generator set.

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 the communication interface. Both AC and DC power supply systems are 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 valves 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 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 YWT type high hydraulic impact and microcomputer governor adopts the adaptive variable structure, change parameters and parallel PID regulating mode, whose operation modes are automatic switch, shut down, frequency modulation, increase or decrease the load, emergency shut-down etc. They 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 unit’s safe operation. Furthermore, it can configure the color touch screen, improve governor’s water level control and regulate power according to the user’s needs.

Basic parameters of YWT series high hydraulic governor

Item Value





Permanent Speed Droop 0-10%










The model code of the YWT series high hydraulic governor

1. Dynamic characteristics Y: Governor with servomotor and pressure tank2. Regulator features W: Microcomputer electro hydraulic governor3. Product feature T: Governor4. Capacity of servomotorSpecifications include: 3000, 6000, 10000, 18000, 30000, 50000, 80000, 100000, 125000, 150000 unit:N•M

YWT series of microcomputer governor

Introduction of YWT series governor

YWT series of microcomputer governor consists 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..




Apply to small and medium size of mixed-flow, tubular fixed plasma type, axial given paddle and the impact water-turbine generator set.

The microcomputer controller adopted imported programmable logic controller(PLC) as central control unit, and touch screen as the man-machine friendly contact surface. The Ethernet, RS232, RS422 or RS485 were 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 servo system use stepper motor to control the main distributing valve directly, and the whole part of machine adopt the integrated block type composite structure and is gasket mounted. The control speed is 18000N•M, the governor above all equipped with two ways of close function.

The YWT type microcomputer governor adopted adaptive variable structure, changed parameters and parallel PID regulating mode that can operate such as automatic switch, shut down, frequency modulation, increase or decrease the load, emergency shut down etc.The net frequency adjustment can be automatically trace 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 unit’s safe operation.

Furthermore, it could configure the color touch screen, improve governor’s water level control and power regulation according to the user’s need.

Basic parameters of YWT series governor

Item Value














Regulating Shaft Angle 0 ~ 45°


The model code of the YWT series governor

1.Dynamic characteristics Y: Governor with servomotor and pressure tank2.Regulator features W: Microcomputer electro hydraulic governor3.Product feature T: Governor4.Capacity of servomotorSpecifications include: 3000, 6000, 10000, 18000, 30000, 50000 unit:N•M

W(S)T type microcomputer governor




Introduction of W(S)T type governor

W(S)T type consists of microcomputer governor and hydraulic servo. 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, strong ability of resisting oil pollution, etc..

Apply to large type Francis turbine generator set, Axial-flow turbine generator set and Tubular turbine generator set.

The microcomputer controller adopted imported programmable logic controller as central control unit, and touch screen as the man-machine friendly contact surface. The Ethernet, RS232, RS422 or RS485 were 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 servo system use stepper motor to control the main distributing valve directly and the whole part of machine adopt the integrated block type composite structure and is gasket mounted.

The W(S)T type 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 unit’s safe operation. Furthermore, it could configure the color touch screen, improve governor’s water level control and regulate the power according to the user’s needs.

Basic parameters of W(S)T type governor

Item Value














Rated Operating Oil Pressure 2.5/4.0/6.3MPa

The model code of the W(S)T type governor

1. Regulator features W: Microcomputer electro hydraulic governor2. Object class: Double adjustment turbine governor. Single adjustment turbine governor, omit this term3. Product feature T: Governor4. Diameter of the guide vane’s main discharge valve: 80, 100, 150, units: mm5. Diameter of the wheel blade’s main discharge valve: 80, 100, 150, units: mm. If the diameter of the guide vane’s main discharge valve is the same with the floatboard’s, omit this term.

CJWT programmable impact type microcomputer governor




Introduction of CJWT series governor

CJWT impact type microcomputer governor is the hydraulic microcomputer governor technically designed for the impulse turbine.

It applies to the regulation and control of both single injector and multinozzle. The hydraulic control part of valve bank of the governor is controlled by unit, high-speed pulse valve controls needle servomotor’s opening, magnetic exchange valve controls deflector and servomotor. The electric control part can join the needle and deflector’s switch automatically, reducing the magnification of hydraulic pressure and movement of lever, stabilizing the operation as well as maintain the simple structure.

Functions of CJWT series governor

The pulse valve use Rexroth series valves.

The electric control part use programmable logic controller (PLC) as control core, and hard ware speed counter PLC is applied to frequency measurement directly, which promised the safety and




anti-interference ability of the operation from the perspective of hardware facility.

On-line diagnostics direct at frequency signal and feedback quantity, maintain the opening under following circumstances: line broken, short circuit, controller power-losing, switch of AC and DC. Unconditional and without disturbance to changing between manual and automatic operation smoothly.

Governor compatible with the plant control loop, the following functions can be realized: starting up, halt, frequency adjustment, schedule opening, add or decrease the load, closing down urgently, manual operation.

Touch screen as the man-machine friendly contact surface.Supply both AC and DC at the same time, or switch the current at will. (Dual power supply simultaneously but DC has priority)

BWT stepping drive microcomputer governor

Features of BWT series governor




* No oil pressure hydraulic system, simple configuration, higher reliability, maintenance operations and low oil consumption, strong oil resistance.* Digital measurement. * It adopts the programmable control technology to improve the liability of unit’s manipulation. * The friendly human-computer dialogue system; LED touch screen; Chinese language screen to provide convenient and intuitive operation interface. * It is able to realize automatic start, halt, frequency adjustment, regulating charge etc.. * Auto tracing opening and switch to autopilot at any time without trouble when in manual operating condition. * Maintain still with battery died. * With on-line self diagnosis and display the problems when electric has malfunction and switch to manual * operation automatically. * It is equipped with upper computer communication interface (RS485) to achieve computer monitoring of implementation management. * Two power sources (AC and DC) are spare to each other.

Specification: BWT-300/600/1000BWT-300W/600W/1000W- "W" stands for double bracketBWT-1800/3000/5000Application: small and medium size hydroelectric plants’ generators

GYWT high pressure microcomputer governor




High hydraulic microcomputer governor is one of the most advanced governor machine in domestic at present, realizing the perfect combination of property and aesthetic, representing the highest level of controlling conception, it’s an ideal product for the small and medium size sub stations.

Features of GYWT series governor

* Use the programmable controller* The electro hydraulic transducer components use digital pulse valve, simple structure and reliable work. * No distributing valve, no pilot valve, no mechanical feedback mechanism, no adjustable lever, maintenance-free. * High oil pressure in working, few hydraulic amplification links, compact in size, nice appearance as well as simple structure. * With features as bladder accumulator to store energy, well gas tightness, separated gas and oil, no need to have air injection year in and year out, it’s a high pressure air system that can save power stations efficiently.

* Governor rotate speed range: Ix=0.1%* Servomotor stirless time: Tq=0.2s* Permanent state of slip coefficient: Bp=010%* Artificial frequency dead zone: ?f=00.5Hz* Certain range of frequencies: Fg=45 Hz-55 Hz* Scale coefficient: Kp=0-10 * Integral time: Ki=0-20s* Derivative time: Kd=0-5s * Operating oil pressure: 16Mpa* Working power supply: AC220V, DC220V, DC110V

Neweras Develop Limited

Contact: Mr. Jack Chen

Email: n eweras [email protected]

MP: 86 15002143331

Webstie: www.newerasdevelop.com





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20140317145901_62786