Turbine regulating system
Functions:
- automatically and semiautomatically rotating a turbine;
- synchronizing a turbogenerator (TG) with an electric network;
- loading or unloading TG with a rate specified by an operator;
- maintaining parameters of a turbogenerator at a specified level in starting and operating modes;
- ensuring TG unloading in load-relief modes when technological protections of a turbine, reactor facility or protections of a generator are active;
- remotely controlling control valves of a turbine by operator’s commands;
- performing the following protective actions:
- preventing unacceptable increase in turbine rotation speed during load-reliefs;
- changing a turbine over to idling or to auxiliaries while maintaining nominal speed after load-relief;
- forming protection signals when acceptable turbine speed is exceeded;
- limiting planned capacity changes.
System advantages:
Reliable execution of safety electronic automate functions
High operation speed;
Possibility of operation in three modes:
- using an electronic speed regulator;
- in a manual control mode.
Other solutions for nuclear power plants
Process information system (unit’s upper level)
Central control system for the NPP power unit which provides visualization, registration and documentation of technological process parameters in all operating modes of the power unit, control of critical functions and basic safety parameters.
Normal operation control systems for reactor and turbine divisions
The systems are designed to control normal operation control of NPP units’ technological systems.
In-core monitoring system
The in-core monitoring system assures monitoring of neutron-physical and thermohydraulic parameters of a reactor facility’s (RF) primary circuit and information support to an operator.
System to monitor boron-10 isotope (boric acid) concentration
The main function of the boron concentration monitoring system based on neutron solution analyzers NAR-I – automatic continuous measurement of boron-10 (boric acid) concentration in coolant at NPP power units with WWER-type reactors.
Safety control system technological
The system is designed to initiate actuation and control of the power units’ safety systems.
Neutron flux monitoring system
The system is a part of a control and protection system (SUZ) of NPP power units.