Title: Physics-constrained fault diagnosis framework for monitoring a multi-component thermal hydraulic system

Abstract

A method for diagnosing faults includes receiving a system description of a thermal hydraulic system, the system description indicating a plurality of components and sensors. The method also includes constructing, based on physical conservations laws and using the system description, a plurality of physics-based models for the plurality of components, each of the plurality of physics-based models including unknown parameters. The method further includes receiving historical measurements and calibrating the physics-based models by calculating the unknown parameters of each of the physics-based models using the historical measurements to produce calibrated models. The method also includes receiving sensor measurements of the sensors, and calculating residuals corresponding to differences between measurements predicted by the plurality of calibrated models and the sensor measurements. The method also includes determining, based on the calculated residuals, a fault of a component or a sensor, and generating an alert indicating the fault.

Inventors:

Nguyen, Tat Nghia; Vilim, Richard B.; Ponciroli, Roberto

Issue Date:

2023-08-29

Research Org.:

Argonne National Laboratory (ANL), Argonne, IL (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

2222229

Patent Number(s):

11740157

Application Number:

17/136,625

Assignee:

UChicago Argonne, LLC (Chicago, IL)

DOE Contract Number:  

AC02-06CH11357

Resource Type:

Patent

Resource Relation:

Patent File Date: 12/29/2020

Country of Publication:

United States

Language:

English