Mathematical model and method for automated power control of a nuclear power plant

V. Vataman, postgraduate student,
T. Petik, postgraduate student, K. Beglov, Ph.D. (Tech.)
Odessа Polytechnic National University
Ukraine, 65044, Odessa, Shevchenko Avenue, 1
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Èlektron. model. 2022, 44(4):28-40


The creation of methods for automated power control of power units is an urgent task, for which it is advisable to use the capacities of nuclear power plants. A mathematical model of a nuclear power plant (NPP) as a control object is proposed, which includes a multi-zone model of the active zone with distributed parameters, which makes it possible to take into account its internal properties (including transitional processes for xenon). This makes it possible to reduce the error in modeling the static and dynamic properties of nuclear power plants. A method for automated control of NPP power change using three control loops has been developed: one maintains a scheduled change in reactor power by controlling the concentration of boric acid in the coolant, the second maintains the required value of the axial offset by changing the position of the adjustment rods, and the third supports the temperature regime of heat transfer. Due to the adjustment of the position of the main valves of the turbogenerator, the developed method makes it possible to improve the stability of the energy release in the core with a change in its power under normal operating conditions of the reactor.


nuclear power plant, axial offset, pressurized water reactor.


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