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Development of Control/Dynamic Model of Bushehr Nuclear Power Plant Using MATLAB/Simulink Software

Jafarabadi, Ali | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 57596 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Ghaffari, Mohsen
  7. Abstract:
  8. Evaluating the optimal performance of any dynamic system necessitates estimating its efficiency using simulation tools. MATLAB/Simulink is one of the most widely used and suitable simulation environments, enabling users to implement time-dependent differential equations governing the system, create corresponding models, and design appropriate controllers. This research aims to extract differential equations describing the dynamics of the main systems of the Bushehr nuclear power plant. Subsequently, using this simulation environment, the systems in question are implemented individually, and for each, an appropriate control system is designed based on its specific function. Ultimately, all these systems are integrated together to observe the mutual interaction of each on the other. The parameters of the differential equations were calibrated using the design and dynamic characteristics from the FSAR documents to make the dynamic model as accurate as possible for the Bushehr nuclear power plan. The primary components modeled dynamically in this research include the reactor core, pumps, dynamic delays in the primary and secondary loops, pressurizer, steam generator, condenser, turbine, and several other minor components detailed in the report. Given the dynamic modeling of the entire nuclear power plant, both neutronic and thermohydraulic equations were used. For simplicity, the thermohydraulic simulation was considered single-phase. Additionally, transient state was only considered for cases where the plant power changed. The differential equations used were first-order, second-order, time-dependent, and one-dimensional. Due to the unavailability of control coefficients, system identification was performed using real data to obtain the best possible coefficients to match the software output with real data. Furthermore, the simulation results were validated against data from the Bushehr Nuclear Power Plant documents. As a preliminary step to assess the feasibility of the thesis, a published paper from a renowned journal was reproduced, and a full-scale simulation of an SMR was carried out. Dynamic modeling of each major subsystem of the Bushehr Nuclear Power Plant has been conducted individually. Subsequently, suitable controllers have been designed to track desired commands. Simulation results have been analyzed. Given the primary objective of power generation in nuclear power plants, a chapter is dedicated to the comprehensive control system, specifically addressing various power regulation methods between the primary and secondary circuits. Finally, the results have been validated against available data from the Bushehr Nuclear Power Plant
  9. Keywords:
  10. Bushehr Nuclear Power Plant ; Dynamics Models ; Final Safety Analysis Report (FSAR) ; Simulink Software ; Controller Design ; Matlab Software ; Nuclear Power Plants

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