Kalman Filter-Based Dynamic Compensator for Vanadium Self Powered Neutron Detectors

Mishra, Amit; Shimjith, S. R.; Bhatt, T. U.; Tiwari, A.P.

doi:10.1109/tns.2014.2321340

Cited by 20 publications

(7 citation statements)

References 18 publications

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“…For the purpose of rejecting Rhodium SPND signals, dynamical "gates" are applied, which are capable to account for the VVER core dynamics, physics of current generating in Rhodium SPND, type and magnitude of a certain detector signal [7][8][9][10] measured and equipment polling cycle using the following formulas: The values of the coefficients are determined proceeding from the physics of active nature of current generating in a Rhodium SPND, and a selected type of filter.…”

Section: If Spnd Current Rejectionmentioning

confidence: 99%

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Algorithms for processing self-powered neutron detector signals important for determination of local parameters in each part of the VVER core

Lys

Kanyuka²

2022

EPJ Nuclear Sci. Technol.

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These investigation findings prove the possibility of a engineering solution for VVER core automatic protection during operation in both nominal and transient conditions within ICIS using local parameters (i.e. linear heat power of the most stressed fuel rod, departure from nucleate boiling ratio). Such engineering solution will be implemented by safety system software-hardware (PTK-Z) on the basis of signals coming from in-core neutron flux detectors, temperature sensors, primary coolant flow and coolant pressure transducers. The article presents the following: a list of in-core neutron flux detectors, a list of transducers of primary coolant monitoring for thermal engineering conditions (temperature, flow rate, pressure), whose signals are delivered to the terminals of instrumentation gauges (PTK-Z) for the purpose of actuating safety actions in accordance with local parameters. The paper shows arrangement of in-core neutron flux detector equipment, above view of self-powered neutron detector (SPND) location in safety channels, axial arrangement of SPND along the core, algorithms for processing SPND signals important for determination of local parameters in each part of the core in both normal and abnormal operation conditions.

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Section: If Spnd Current Rejectionmentioning

confidence: 99%

“…For the purpose of function of time delay elimination, this technical solution discusses two filters, these are a corrective filter and Kalman filter [7,8].…”

Section: Elimination Of Time Delaymentioning

confidence: 99%

Algorithms for processing self-powered neutron detector signals important for determination of local parameters in each part of the VVER core

Lys

Kanyuka²

2022

EPJ Nuclear Sci. Technol.

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“…The noise signal vector includes the contributions from both the process and measurement. The objective is to design an aymptotically stable filter given by (4) (5) with the error dynamics…”

Section: Comments On "Adaptive Fading Memory Filter Design For Compenmentioning

confidence: 99%

“…A state space formulation of transfer function model of Vanadium SPFD with augmented flux model for desigining the Kalman filter based dynamic compensator is given in [4][5]. As per these, the model of Vanadium SPFD should be IEEE.…”

mentioning

confidence: 99%

Comments on “Adaptive Fading Memory H Filter Design for Compensation of Delayed Components in Self Powered Flux Detectors”

Mishra

Shimjith

Tiwari

2016

IEEE Trans. Nucl. Sci.

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In a recent paper (Tamboli, et al. 2015), Tamboli, Duttagupta, and Roy have presented a comparative study of existing dynamic compensation algorithms based on Linear Matrix Inequality (LMI) based a priori filtering and Discrete time Algebric Riccati Equation (DARE) based Kalman filtering for delayed responding Self Powered Flux detectors (SPFD) with Vanadium and Platinum emitters. Moreover, authors have proposed an adaptive fading memory discrete time filter by modifying the well-known Game Theoretic filtering algorithm. This note suggests corrections to the theory and applications presented in their paper.

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“…In the United States, Westinghouse Company used vanadium in PWR (St Lucie unit 1), 4 but generally, vanadium is used in pressurized heavy-water reactors because its signal intensity is too low to be applied to PWRs. 5,6 In this study, 4 materials were examined: rhodium, vanadium, cobalt, and silver. Cobalt and silver are new candidates for use of in-core detector emitter material.…”

Section: Introductionmentioning

confidence: 99%

Lifetime extension of in-core self-powered neutron detector using new emitter materials

2017

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Summary In this paper, new in‐core self‐powered neutron detector emitter candidate materials, ie, vanadium, cobalt, and silver, have been examined in their lifetimes compared with the commonly used rhodium emitter. Using a new quantitative lifetime evaluation model, the lifetimes of vanadium and cobalt were determined to be longer than that of rhodium, but these materials were also shown to have the disadvantage of low signal intensities. Under normal operating conditions, we showed that rhodium emitter can be used for 2 cycles of pressurized water reactors (PWRs) with lifetime of 4.35 years, whereas silver can be used for 5 cycles of PWRs with lifetime of 8.04 years. Three sensitivity tests were performed for rhodium and silver about (1) the emitter size, (2) the fuel assembly burnup, and (3) the emitter temperature variations. From the test results, we observed that the lifetimes of rhodium and silver emitters remained 2 and 5 cycles long, respectively. We concluded that silver can significantly extend the in‐core detector's lifetime in PWR operation.

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Kalman Filter-Based Dynamic Compensator for Vanadium Self Powered Neutron Detectors

Cited by 20 publications

References 18 publications

Algorithms for processing self-powered neutron detector signals important for determination of local parameters in each part of the VVER core

Algorithms for processing self-powered neutron detector signals important for determination of local parameters in each part of the VVER core

Comments on “Adaptive Fading Memory H Filter Design for Compensation of Delayed Components in Self Powered Flux Detectors”

Lifetime extension of in-core self-powered neutron detector using new emitter materials

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