Core Power Modelling of High-Temperature Engineering Test Reactor (HTTR) Using Nonlinear Least Squares Method for Parameter Estimation

Aulia Istiqomah, Aries Subiantoro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The high-temperature gas cooled-reactor (HTGR) has been constructed in Japan and produces rated power operation and hydrogen, contributing to the development of future energy strategies. One type of HTGR, the high-temperature engineering test reactor (HTTR), uses long hexagonal fuel assemblies. The HTTR is a graphite-moderated, helium-gas-cooled reactor with thermal power of 30 MW, an inlet coolant temperature of 395° C, and an outlet coolant temperature of 950° C. In this paper, a nonlinear mathematical model of the nuclear reactor core was derived in derivative form using fundamental principles. Unknown parameter data could be estimated with physics equations using the nonlinear least squares curve fitting method. The validation between the mathematical model and experimental data of the plant-obtained simulation response indicates that the model could have been used for further optimization and control. The simulation-response results showed that the mathematical model with estimated parameters has an accuracy above 89%. Consequently, based on the simulation response, the mathematical model could be used as the HTTR continues to function.

Original languageEnglish
Title of host publicationAIMS 2021 - International Conference on Artificial Intelligence and Mechatronics Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665424820
DOIs
Publication statusPublished - 28 Apr 2021
Event2021 International Conference on Artificial Intelligence and Mechatronics Systems, AIMS 2021 - Virtual, Bandung, Indonesia
Duration: 28 Apr 202130 Apr 2021

Publication series

NameAIMS 2021 - International Conference on Artificial Intelligence and Mechatronics Systems

Conference

Conference2021 International Conference on Artificial Intelligence and Mechatronics Systems, AIMS 2021
Country/TerritoryIndonesia
CityVirtual, Bandung
Period28/04/2130/04/21

Keywords

  • Control Rod
  • Core
  • Estimation
  • HTTR
  • Model
  • Nonlinear Least Square
  • Withdrawal

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