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SCADA-based Operator Support System for Power Plant Equipment Fault Forecasting

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An Erratum to this article was published on 27 February 2015

Abstract

Power plant equipment must be monitored closely to prevent failures from disrupting plant availability. Online monitoring technology integrated with hybrid forecasting techniques can be used to prevent plant equipment faults. A self learning rule-based expert system is proposed in this paper for fault forecasting in power plants controlled by supervisory control and data acquisition (SCADA) system. Self-learning utilizes associative data mining algorithms on the SCADA history database to form new rules that can dynamically update the knowledge base of the rule-based expert system. In this study, a number of popular associative learning algorithms are considered for rule formation. Data mining results show that the Tertius algorithm is best suited for developing a learning engine for power plants. For real-time monitoring of the plant condition, graphical models are constructed by K-means clustering. To build a time-series forecasting model, a multi layer preceptron (MLP) is used. Once created, the models are updated in the model library to provide an adaptive environment for the proposed system. Graphical user interface (GUI) illustrates the variation of all sensor values affecting a particular alarm/fault, as well as the step-by-step procedure for avoiding critical situations and consequent plant shutdown. The forecasting performance is evaluated by computing the mean absolute error and root mean square error of the predictions.

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Authors and Affiliations

  1. Department of Electrical Engineering, College of Engineering Trivandrum, Trivandrum, India

    N. Mayadevi & S. S. Ushakumari

  2. Computer Centre, University of Kerala, Trivandrum, India

    S. S. Vinodchandra

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  1. N. Mayadevi
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  2. S. S. Ushakumari
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  3. S. S. Vinodchandra
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Correspondence to N. Mayadevi.

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Mayadevi, N., Ushakumari, S.S. & Vinodchandra, S.S. SCADA-based Operator Support System for Power Plant Equipment Fault Forecasting. J. Inst. Eng. India Ser. B 95, 369–376 (2014). https://doi.org/10.1007/s40031-014-0117-9

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  • DOI: https://doi.org/10.1007/s40031-014-0117-9

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