RTVX POWER — combined excitation system and turbine governor in one cabinet
RTVX POWER is a combined system that unites the RTX POWER excitation system and the RVX POWER digital turbine governor in one cabinet on a common platform, with one software package and one operator interface. It controls the voltage and reactive power of a synchronous generator, and the frequency and active power of a hydro unit. The system is installed on small, medium and large units with Francis, Kaplan, Pelton and bulb turbines.
- Composition
- RTX POWER + RVX POWER on a common platform, software and HMI, in one cabinet
- Turbines
- Francis, Kaplan, Pelton, Bulb
- Exciters
- static or rotating (including brushless)
- Functions
- per IEEE 421.5; PSS2B/PSS4B (option); ANSI 64R; IEEE 115-2009
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The manufacturer proposed the combined system concept in 1999. The RTX POWER and RVX POWER hardware was designed with enough processor load and memory headroom for both functions to fit in one controller. All RTX and RVX functions and tools are present in RTVX. The combination means fewer components and therefore fewer failures, savings in cost and space, fewer engineering interfaces and less commissioning work, simpler installation and maintenance, and a shorter spare parts list. The generator may have a static or a rotating exciter.
The voltage regulator is built per IEEE 421.5. It has power factor, reactive power and field current regulators, active and reactive current compensation, and limiters for maximum rotor current, underexcitation, V/Hz and stator current. Options include rotor temperature calculation per IEEE 115-2009, a minimum current limiter, a PSS2B/PSS4B stabilizer, voltage trimming, rotating diode monitoring, ANSI 64R protection and reactive current equalization between parallel units.
Redundancy goes deeper than in most systems on the market. The excitation and turbine governor processors are duplicated, each has an automatic and a manual channel and a watchdog timer, and channels and modes switch automatically and without a jolt. I/O modules are redundant together with terminals and wiring, as are thyristor bridges controlled from either channel, and the fans of each bridge. The conduction and temperature of each thyristor are monitored separately. Control modules, bridges and the oil pressure unit can be serviced while the standby system is running.
The controller has VT/CT inputs, 3 frequency measurement channels from induction sensors, 4 PWM outputs and 2000 V isolation, and the printed circuit boards are designed to IEC EMC requirements. The touch interface is available in Portuguese, Spanish and English. Communication runs over IEC 61850, DNP3.0, IEC 60870-5-104, Modbus TCP/RTU, with time synchronization by IRIG-B, NTP, PTP. The voltage regulator was assessed by Kestrel Power Engineering for compliance with NERC and IEEE requirements. The hydraulic part can be a new FLUIDPOWER oil pressure unit for flow up to 1500 or up to 10 000 L/min, and an existing unit can also be kept.
Implemented projects include the Jupiá hydropower plant in Brazil (14 × 117 MVA, 13.8 kV, Kaplan turbines), Ilha Solteira (20 × 205 MVA, 14.4 kV, Francis) and Fortuna in Panama (3 × 108 MVA, Pelton). Another example is the modernization of 41 units at 13 Enel Green Power hydropower plants.
Technical specifications
| Composition | RTX POWER + RVX POWER on a common platform, software and HMI, in one cabinet |
|---|---|
| Turbines | Francis, Kaplan, Pelton, Bulb |
| Exciters | static or rotating (including brushless) |
| Functions | per IEEE 421.5; PSS2B/PSS4B (option); ANSI 64R; IEEE 115-2009 |
| Redundancy | excitation and governor processors (AUTO/MANUAL), I/O, thyristor bridges, fans |
| Controller | VT/CT inputs, 3 frequency channels from induction sensors, 4 PWM outputs; 2000 V isolation |
| HMI | touch, PT/ES/EN |
| Hydraulics | FLUIDPOWER, up to 1500 or 10 000 L/min |
| Examples | Jupiá 14 × 117 MVA 13.8 kV; Ilha Solteira 20 × 205 MVA 14.4 kV; Fortuna 3 × 108 MVA |
Request a price and lead time
RTVX POWER — combined excitation system and turbine governor in one cabinet. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
Which functions does RTVX POWER combine?
The RTX POWER excitation system and the RVX POWER digital turbine governor on one hardware platform in one cabinet. It controls the voltage and reactive power of the generator, and the frequency and active power of the unit.
Which parts of the system can be redundant?
The excitation and turbine governor processors with an automatic and a manual channel, I/O modules with terminals and wiring, thyristor bridges and fans. Switching between channels is automatic and bumpless.
On which units is the system already running?
For example, at the Jupiá hydropower plant (14 × 117 MVA, 13.8 kV, Kaplan), Ilha Solteira (20 × 205 MVA, 14.4 kV, Francis) and Fortuna (3 × 108 MVA, Pelton). 41 units at 13 Enel Green Power hydropower plants have also been modernized.
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