Estimating Efficiency of Using Additional Low-power Turbines Operating in Regular Modes at Nuclear Power Stations

The employment options of a multifunctional additional low-power turbine at a nuclear power plant are considered taking into account the uneven daily schedules of power consumption under strict adherence to the rules of providing the system reserve with auxiliary power supply in the event of a station blackout. To provide a hot reserve during the power consumption decline, the efficiency of its usage at different power levels, a no-load operation and driving mode operation is determined. In the context of the changing tariffs for night-time hours, the conditions for the most effective modes in the absence or availability of power fees during the power decay are determined. In case of the charges for power during the energy usage reduction, all the considered modes will become economically justified, but their efficiency will differ depending on deregulated electricity tariffs.