TOSMAP-DS/LX: D-AVR and D-EHC digital generator excitation and steam turbine control systems
D-AVR and D-EHC are digital turbine-generator control systems on the TOSMAP-DS/LX platform. D-AVR automatically regulates generator excitation, D-EHC controls and protects the steam turbine. The systems are installed on new steam turbine and combined-cycle units and in upgrades of thermal and nuclear plants.
- Platform
- TOSMAP-DS/LX (microprocessor controller for turbine and generator)
- D-AVR
- digital automatic excitation regulator, voltage and reactive power control
- D-EHC
- digital electro-hydraulic control and protection system for the steam turbine
- Redundancy
- triple (controllers and I/O network)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The TOSMAP-DS/LX platform (Microprocessor Aided Power system control, Dynastream) consists of microprocessor controllers developed specifically for steam turbine and generator control. The hardware platform is common to both systems, so the excitation regulator and the turbine controller work in one control network. The controllers have triple redundancy and the control network is redundant too, so the failure of one channel does not stop the unit. Above them runs an information network with operator stations, and on request remote monitoring over the internet in 24/7 mode is added, so specialists see the system status without travelling to the station.
D-AVR regulates the generator voltage and reactive power and thus improves power system stability. The manufacturer has over 100 years of experience in designing and building control systems for synchronous generators, and this experience is built into the latest generation of excitation systems. The regulator is supplied both for the manufacturer's own turbogenerators and for machines of other makers, for example when upgrading the excitation systems of operating stations. In an upgrade the old analog regulator is replaced without replacing the generator itself. Over 500 D-AVR systems are installed worldwide.
D-EHC controls the steam turbine from start-up to shutdown and protects it over the whole operating range, so unit availability and safety depend on it. Turbine start-up is fully automatic. The optimized start-up function relies on a predictive model of rotor thermal stress. The speed of run-up and load pickup is modulated so as to keep the rotor surface temperature within the required limits and shorten the start-up time. This reduces fatigue loading of the rotor and preserves its life under frequent starts. The controllers have extended monitoring and a convenient operator interface. Over 350 D-EHC systems are installed.
The systems are used on new steam turbine and combined-cycle units and for upgrading excitation and turbine control at operating thermal and nuclear plants. They are supplied as a set with TX series steam turbines and the manufacturer's turbogenerators, while for generators of other makers D-AVR is installed separately. The long experience in designing and building control systems for steam turbines, which the company has produced since 1927, is built into the latest generation of D-EHC.
Technical specifications
| Platform | TOSMAP-DS/LX (microprocessor controller for turbine and generator) |
|---|---|
| D-AVR | digital automatic excitation regulator, voltage and reactive power control |
| D-EHC | digital electro-hydraulic control and protection system for the steam turbine |
| Redundancy | triple (controllers and I/O network) |
| Installed | over 500 D-AVR and over 350 D-EHC |
| Compatibility | D-AVR - also for generators of other makers |
Request a price and lead time
TOSMAP-DS/LX: D-AVR and D-EHC digital generator excitation and steam turbine control systems. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8504 40 88 00 9032 89 00 00 |
|---|---|
| HS, 6 digits | 9032 89 8504 40 |
| CN (EU) | 8504 40 88 9032 89 00 |
| HTSUS (USA) | 8504 40 95 80 9032 89 60 90 |
| China customs tariff | 8504 40 99 99 9032 89 90 90 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Is D-AVR suitable for generators of other makers?
Yes, D-AVR is supplied both for the manufacturer's own turbogenerators and for machines of other makers, including excitation upgrades. Over 500 such systems are installed worldwide.
Which functions does D-EHC perform?
The system controls the steam turbine from start-up to shutdown, protects it over the whole operating range and performs automatic start-up based on a predictive model of rotor thermal stress. Over 350 systems are installed.
How are the TOSMAP-DS/LX controllers made redundant?
The controllers have triple redundancy and the control network is redundant too. Remote 24/7 monitoring is added on request.
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