Robust data reconciliation of combustion variables in multi-fuel fired industrial boilers

Timo Korpela, Olli Suominen, Yrjö Majanne, Ville Laukkanen, Pentti Lautala

    Research output: Contribution to journalArticleScientificpeer-review

    20 Citations (Scopus)

    Abstract

    This paper introduces an application of simultaneous nonlinear data reconciliation and gross error detection for power plants utilizing a complex but computationally light first principle combustion model. Element and energy balances and robust techniques introduce nonlinearity and the consequent optimization problem is solved using nonlinear optimization. Data reconciliation improves estimation of process variables and enables improved sensor quality control and identification of process anomalies. The approach was applied to an industrial 200 MWth fluidized bed boiler combusting wood, peat, bark, and slurry. The results indicate that the approach is valid and is able to perform in various process conditions. As the combustion model is generic, the method is applicable in any boiler environment.

    Original languageEnglish
    Pages (from-to)101-115
    Number of pages15
    JournalControl Engineering Practice
    Volume55
    DOIs
    Publication statusPublished - 21 Jul 2016
    Publication typeA1 Journal article-refereed

    Keywords

    • Data reconciliation
    • Diagnostics
    • Estimation
    • Gross error detection
    • Monitoring
    • Power plant

    Publication forum classification

    • Publication forum level 2

    ASJC Scopus subject areas

    • Control and Systems Engineering
    • Electrical and Electronic Engineering
    • Applied Mathematics
    • Computer Science Applications

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