Digital Inputs: Main Breaker, Start, Normal Stop, Emergency Stop, Rapid Stop, Increase WG Set Point, Decrease WG Set Point, Prepairing the Start, WG blocked/unblocked Signalization for oil filter clogging Digital Outputs: opening/closing isolating valve, Commands for the emergency units from the both servovalves (WG and Runner), Governor’s Status, WG Closed, WG at 20% opening, Governor Ready to Start

DIGITAL SPEED GOVERNOR

For Hydro Turbines

Digital Speed Governor for Kaplan, Francis, bulb, Pelton turbines Hydro-mechanical system equipped with: HRV servosolenoid valves with OBE (Bosch/Moog) (NG 10, 16, 25, 32) Oil filter: 10 µm, 25 µm (Hydac) Isolating valve (Bosch) Oil pressure unit: Oil: TBA57E or similar Nominal Pressure: 30-60 bar Transducers for: Downstream, Upstream water levels (MJK), 4-20 mA Flow – Differential Pressure (Siemens), 4-20 mA Speed – proximity, sinusoidal voltage (Omron), 4-20 mA Wicket Gate position – magnetostrictive (Baluff), 4-20 mA Runner blades position – magnetostrictive, 4-20 mA Governing system’s pressure (Turck), 4-20 mA Active Power – (Turck), 4-20 mA

Digital Command Equipment Power Supply: 220 Vdc/24 Vdc PLC: R3xi (GE Fanuc), 300 Mhz, Quantum

(Schneider), 166 MHz High Speed Counter: 80-150 kHz Analog Inputs: 16 channels curr., 12 bit, Analog Outputs: 8 channels curr/volt, 12 bit Digital Inputs: 32 channels, 24 Vcc Digital Outputs: 32 channels, 24 Vcc Data Panel: Touchscreen 6-7 inch, 256 colors Communications: Ethernet, CAN, Modbus/RTU,

Modbus Plus etc., RS-232, RS-485 GPS: hour and date updating

Analog Inputs: Frequency (pulses) Wicked Gate Position Runner Blades’ Opening Angle WG Distributing Valve’s Position (Diagnosis) Runner Distributing Valve’s Position (Diagnosis) Oil Pressure in Governing System Active Power Water Level in Upstream Netto Head Water Flow (optimization of the turbine’s efficiency) Analog Outputs: Command for WG servovalve (±10 Vdc) Command for Runner servovalve (±10 Vdc) Indicating parameters for measurements in 0..10 Vdc: frequency, WG position, Runner position, Active Power, WG’s Set Point, Netto Head etc.

Speed Governing Parameters A/D conversion time: (<0,1 ms) Permanent speed drop: 1-10% Time constant: Td=0-99 sec Frequency set point: 47.5-52.4 Hz Frequency dead band: 0.05 Hz Frequency accuracy: <5 mHz Digital WG Set Point resolution: <10 mHz Governor’s insensibility <10 mHz Digital cam (spatial type) Load/Unload/Power gov. parameters settable WG, ϕ limits, settable Power Supply: 220 Vcc Overvoltage protection, by-pass protections Checksum, watchdog Input signal: 0-10 VDC, 4-20 mA Complete diagnosis of the system Governing Loops: frequency-opening, frequency-power, frequency-upstream water level, water flow Auto-adaptive transfer functions

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Digital Speed Governor for Hydro Turbines Block Diagram

Design: CATIA, AutoCAD Programming: ladder logic, HMI Central Concept: TRIDENT own UCMR’s Hydro Digital Control System Concept Acreditation: UCTE normatives for energy distribution

Digital Speed Governor HEPP Implementation Mounting and starting within HEPP Performance tests Qualification for System Services Measurements Real time data acquisition equipment (LabVIEW software VIs)

CHE Zavideni HA1Pornire, sincronizare, cuplare, incarcare stimulentabp=7% ora 15:17

t0,8=223.6 s, 40 Hz

t0=205 s

tS=265 s

tSR=261.3 s, 49.75 Hz

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t[sec]

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CHE Zavideni HA1Aruncare de sarcina de la P=19 MW, reglaj frecventa-puterebpp=8% ora 15:43

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