1 / 29

Antonio Cammi, Roberto Ponciroli, Stefano Lorenzi, Sara Bortot, Alessandro Della Bona

CIRTEN Consorzio universitario per la ricerca tecnologica nucleare. ENEA BOLOGNA 26 th October 2011. UNIVERSITA’ DI PISA. LEADER WP4 Task 4.1 (task leader: Fabio Fineschi ) Task 4.4 (task leader: Antonio Cammi , antonio.cammi@polimi.it)

cecil
Download Presentation

Antonio Cammi, Roberto Ponciroli, Stefano Lorenzi, Sara Bortot, Alessandro Della Bona

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. CIRTEN Consorzio universitario per la ricerca tecnologica nucleare ENEA BOLOGNA 26th October 2011 UNIVERSITA’ DI PISA LEADER WP4 Task 4.1 (task leader: Fabio Fineschi) Task 4.4 (task leader: Antonio Cammi, antonio.cammi@polimi.it) “Preliminary definition of the Control Architecture” Antonio Cammi, Roberto Ponciroli, Stefano Lorenzi, Sara Bortot, Alessandro Della Bona Fabio Fineschi, AlessioCampedrer

  2. OUTLINE • Point on the progress of the work • Reference system configuration and modeling • Significant free dynamics results • NON-LINEAR control system options • Main results • Present and future developments

  3. POINT ON THE PROGRESS OF THE WORK TOOLSGOALS DYNAMICS SIMULATOR DEVELOPMENT NEW! NON-LINEAR ZERO-DIMENSIONAL NON-LINEAR OBJECT-ORIENTED TRANSIENT ANALYSES NEW! NEW! LINEARIZED ZERO-DIMENSIONAL LINEARIZED OBJECT-ORIENTED NEW! LINEAR ANALYSIS • NEW! • CONTROL SYSTEM • DEVELOPMENT • Evaluation of scenarios • Final proposal • Implementation NEW! CONTROLLED PLANT TRANSIENT BEHAVIOR

  4. POINT ON THE PROGRESS OF THE WORK

  5. REFERENCE SYSTEM CONFIGURATION and MODELING MAIN COMPONENTS: CORE 529.89 cm 165 cm

  6. REFERENCE SYSTEM CONFIGURATION and MODELING MAIN COMPONENTS: CORE • REACTIVITY COEFFICIENTS • Doppler from SCK calculations • Lead density from SCK calculations • Axial expansion from DEMO (missing data) • Radial expansion from DEMO (missing data) • KINETIC PARAMETERS • λifrom DEMO (missing data) • βi from DEMO (missing data) • CONTROL RODS WORTH • Insertion curves from DEMO (missing data)

  7. REFERENCE SYSTEM CONFIGURATION MAIN COMPONENTS: SG

  8. REFERENCE SYSTEM CONFIGURATION and MODELING PRIMARY LOOP

  9. REFERENCE SYSTEM CONFIGURATION and MODELING SECONDARY LOOP (BoP)

  10. REFERENCE SYSTEM CONFIGURATION and MODELING SECONDARY LOOP (BoP) FINAL REFERENCE CONFIGURATION MISSING STANDARD COMPONENTS EMPLOYED

  11. SIGNIFICANT FREE DYNAMICS RESULTS LEAD MASS FLOW RATE VARIATION VARIATION = - 20 % T_cold_leg Power T_hot_leg Pressure

  12. SIGNIFICANT FREE DYNAMICS RESULTS TURBINE ADMISSION VALVE COEFFICIENT VARIATION VARIATION = - 10 % Power T_cold_leg T_hot_leg Pressure

  13. NON LINEAR CONTROL SYSTEM OPTIONS VARIABLE LEAD MASS FLOW RATE RGA

  14. NON LINEAR CONTROL SYSTEM OPTIONS FIXED LEAD MASS FLOW RATE RGA

  15. NON LINEAR CONTROL SYSTEM OPTIONS VARIABLE vs. FIXED LEAD MASS FLOW RATE PROS & CONS • ADVANTAGES • Better power control • Steady-state reached in a shorter time • DISADVANTAGES • More difficulties in pairing process • Larger oscillations of controlled variables • Cold leg temperature to be controlled by feedwater temperature • strict UPPER and LOWER constraints

  16. NON LINEAR CONTROL SYSTEM OPTIONS FIXED LEAD MASS FLOW RATE Feedforward-Feedback

  17. NON LINEAR CONTROL SYSTEM OPTIONS FIXED LEAD MASS FLOW RATE Feedforward-Feedback

  18. MAIN RESULTS POWER LEVEL REDUCTION: - 10%

  19. MAIN RESULTS POWER LEVEL REDUCTION: - 10%

  20. MAIN RESULTS POWER LEVEL REDUCTION: - 10%

  21. FIXED LEAD MASS FLOW RATE Feedforward-Feedback MAIN RESULTS POWER LEVEL REDUCTION: - 200 MW

  22. MAIN RESULTS POWER LEVEL REDUCTION: - 200 MW

  23. MAIN RESULTS POWER LEVEL REDUCTION: - 200 MW

  24. MAIN RESULTS POWER LEVEL TRANSIENT: + 20 MW starting from f = 60%

  25. MAIN RESULTS POWER LEVEL TRANSIENT: + 20 MW starting from f = 60%

  26. MAIN RESULTS POWER LEVEL TRANSIENT: + 20 MW starting from f = 60%

  27. PRESENT AND FUTURE DEVELOPMENTS TIT CONTROL RGA

  28. PRESENT AND FUTURE DEVELOPMENTS OPEN ISSUES • Update with final core configuration  DATA NEEDED! • Closing the secondary loop  DATA NEEDED! • - ELSY BoP data employed provisionally • - Data concerning bleeds, heaters, … • - Detailed and complete configuration • Development of ADVANCED CONTROL: • - Variable Structure Control (VSC) • - Predictive control

  29. DOCUMENT RELEASE D14 : Normal, Transient and Accidental Operational Modes: Control and Protection Functions Identification 3rd Draft Issued D21: Preliminary Definition of the Control Architecture 1st Draft – Chapter I issued

More Related