AN APPLICATION OF FUZZY LOGIC CONTROLLERS FOR POWER CONTROL OF THE VVER-1200 NUCLEAR REACTOR
https://doi.org/10.26583/vestnik.2024.320
EDN: QBFVFE
Abstract
This article deals with fuzzy and fuzzy-PI controllers for the automatic power control system of a non-linear mathematical model of the VVER-1200 nuclear reactor. The power control systems loop includes a mathematical model of the electromagnetic stepper motor, a model of in-core and ex-core neutron flux sensors, and a refined mathematical model of the group 12 of control and protection system control rods, obtained by approximating experimental data using the Levenberg–Marquardt algorithm for nonlinear least-square problem. Based on the state-space model, 10 transfer function matrices of the nuclear reactor corresponding to the power range of 10 to 100 % of the nominal power were also determined, and 10 classical PI controllers were modelled to ensure stability margins of at least 60 degrees in phase and at least 10 decibels in amplitude for each power level of the plant. Simulation results show significant advantages of the developed fuzzy controllers both in the steady-state power maintenance mode considering noise in the neutron flux sensor channel, and in load-following mode at different power levels.
About the Authors
S. Pravosud
Rosatom Technical Academy;
Seversk Tecnological Institute – a branch of the National Research Nuclear University MEPhI
Russian Federation
Russian Federation
D. Maslakov
Seversk Tecnological Institute – a branch of the National Research Nuclear University MEPhI
Russian Federation
Russian Federation
Ya. Yakubov
Seversk Tecnological Institute – a branch of the National Research Nuclear University MEPhI
Russian Federation
Russian Federation
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Review
For citations:
Pravosud S., Maslakov D., Yakubov Ya. AN APPLICATION OF FUZZY LOGIC CONTROLLERS FOR POWER CONTROL OF THE VVER-1200 NUCLEAR REACTOR. Vestnik natsional'nogo issledovatel'skogo yadernogo universiteta "MIFI". 2024;13(2):97-109. (In Russ.) https://doi.org/10.26583/vestnik.2024.320. EDN: QBFVFE
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