Automation for Conventional Power Generation

In the area of conventional power generation and heating plant industry we form standard and new solutions for control and information systems for optimising the operation of controlled technologies including the implementation of safety automation elements.

We have been cooperating with both domestic and foreign technology suppliers so that demanding requirements of the contemporary state-of-the-art control systems are taken into account in our supplies.

Process automation:

• We implement functions for control of units, auxiliary facilities and desulphurization
• We control power units in the whole operation scale including start-up and shut-down, dynamic transition between stable operation modes and extraordinary failure conditions
• Power units control is in accordance with requirements of the Transmission Grid Code
• The control system provides ultimate power change depending on failures of corresponding technological equipment.
• Control interventions are designed so that they enable maximum possible power changes without exceeding the temperature stress in the most critical part of the technological equipment

Turbine control (steam turbines, hydro-turbines)

• Turbine control with modules
• Turning speed measuring and evaluation
• Turbine speed control
• Unit control in “Island” mode
• Power control
• Primary and secondary control of power
• Input pressure control
• Manual control of control valves positions
• Control of control valves positions
• Press and quantity control in steam bleeding
• Limiting control in steam bleeding
• Manual control of a steam bleeding flap
• Positions control of diffusion ring blades (Francis and Kaplan turbine)

Excitation control

• Excitation systems with direct current generator exciters
• Excitation systems with launchers without slip rings
• Static excitation systems
• Excitation systems with alternating current exciters

Distribution plants control

• Two-value processing of conditions of all switching elements
• Failure signalling (for selected signals – 10ms resolution)
• Blocking conditions implemented on the level of process stations and In-Touch
• Measuring alternating and direct parameters and P, Q, and cos calculation
• Balance processing of measured values
• Evaluation of synchronization conditions
• Parameterization of protections
• Transformer cooling control
• Special SW functions:
• Transformer HV tension control
• Choking coil tuning

Safety automation:

Burners automation

• Certified automation for gas, oil, and combined burners control – EN298
• Automatic start and control of one-grade, two-grade or continuously controlled oil, gas or combined (oil-gas) burners with a fan and an ignition system

Protection systems

• Boiler and turbine protections are designed so called Fail-Safe systems two-channel or threechannel in accordance with the ČSN EN 61508 (SIL3) standard. Turbine turning speed measuring is designed to protect three-channelled and for control as two-channelled.
• Protection system is designed functionally and physically by means of an individual Fail-Safe systém (independently of operation control system function)

Sequence of Events Recorder - SOE

• It records and stores technologically significant events with high-time resolution
• It enables monitoring as much as 600 binary inputs in one rack of a system
• It provides time resolution as short as 1 ms with external time synchronization possibility regarding the absolute time
• Analysis of acquired data by own SW means
• Independency of control system
• Data exported to an SQL database

ZAT Decision Suite

SW super-structure of ZAT Control System for operation optimization of power generating plants

• Efficiency improvement of the entire unit
• Boiler power losses reduction
• Continual maintenance of gas emissions in the range of current standard values by plant power requirements reduction, particularly by optimal control of condensate cooling system operation

ZAT Decision Suite with modules:

• Combustion optimization module
• Module of boiler gas emissions optimization (NOx, CO)
• Module of turbine operation optimization
• Module of condensate cooling system operation optimization
• Module of power plant operation optimization in stationary modes
• Module of operation optimization in the mode of system services delivery
• Central module

• Our applications:
  
  Czech Republic:
  
  • Elektrárna Mělník
  • Elektrárna Tušimice
  • Elektrárna Tisová
  • Elektrárna Malešice
  • Elektrárna Opatovice
  • Elektrárna Vřesová
  • Teplárna Náchod
  • Teplárna Písek
  • Teplárna Třebovice
  • Teplárna Strakonice atd.

  Abroad:

  • Elektrárna Ulaanbaatar, Mongolsko
  • Elektrárna Felton, Kuba
  • Elektrárna Shen-Tou, Čína
  • Elektrárna Hermosillo, Mexiko
  • Elektrárna Chittagong, Bangladéš
  • Elektrárna Jeddah, Saudská Arábie
  • Vodní elektrárna Enguri, Gruzie
  • Spalovna Ocaňa, Španělsko atd.