Turbine control and regulation

The TCS is used for the control and regulation of the steam turbine. It is a high-quality and highly reliable system, divided into two subsystems.

The first subsystem for regulation is implemented in a dual-channel configuration with split inputs. The regulation system operates in a Master-Slave mode. Both channels have their own input/output converters. The valve control outputs from each channel are connected to separate actuators (converters), with both channels’ outputs remaining continuously active. Speed measurement is performed using three-channel hardware inputs.

The second subsystem for control is also implemented in a dual-channel configuration with split inputs and duplicated outputs for actuator control. The control system operates in a 1-out-of-2 mode with hardware signal summation at the actuator.

Operation and communication are provided via operator station panels. The system performs Category C safety functions according to ČSN EN 61226 and is implemented on the SandRA platform using HMI and Z200 hardware components. It is also communication-connected to the Unit Control and Information System (UCIS).