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首页> 外文期刊>Annals of nuclear energy >Continuous online monitoring in pressurized water reactors during flexible operation using PLSR-based technique - Case study: Load following test
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Continuous online monitoring in pressurized water reactors during flexible operation using PLSR-based technique - Case study: Load following test

机译：使用PLSR的技术在灵活的操作期间连续在线监测加压水反应器 - 案例研究：测试后载荷

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摘要

This paper proposes the application of a multivariant-based technique, namely, Partial Least Square Regression (PLSR) to enhance the process of continuous online monitoring and control in pressurized water reactors (PWR) during flexible operation. The results of the investigations of this paper have shown that the proposed technique provided effective performance during flexible PWR operation even with a small size of available history operating data samples. More specific, the proposed model provides the reactor operator with a comprehensive and simple presentation of the reactor status via a single dynamic trajectory during flexible operation which helps detecting anomalies at an early stage. In addition, results also have shown that the proposed PLSR-based model minimized the limitation on the ex-core accuracy resulting from the operation in the flexible mode, provided reliable, fast with excellent monitoring efficiency. Moreover, the results have also shown that the proposed model provides a graphical control guide which is achieved via a prioritized, reduced, comprehensive and manageable set of the PWR physical parameters. The analysis of this graphical guide has shown that it provides the fine control tuning, which in many cases is left for the operator, thus it minimizes the human error by relieving operators from having to pay attention to additional tasks during transient contingencies. In the context of this paper, a load-following test is conducted to ascertain the efficiency of the proposed technique. The data of the test was observed at Unit-1, Tihange nuclear power station, Belgium (three-loop PWR, 2873 MWth, 962 MWe net). The PLSR-based model for continuous model for continuous monitoring as well as the graphical control guide are developed and validated using SIMCA software package. (C) 2021 Elsevier Ltd. All rights reserved.
机译：本文提出了一种基于多变量的技术的应用，即部分最小二乘回归（PLSR）来增强在柔性操作期间加压水反应器（PWR）中连续在线监测和控制的过程。本文调查结果表明，即使具有小尺寸的可用历史操作数据样本，所提出的技术也在灵活的PWR操作期间提供了有效性能。更具体地，所提出的模型提供了反应器操作员通过在柔性操作期间通过单个动态轨迹全面简单地呈现反应器状态，这有助于在早期阶段检测异常。此外，结果还表明，所提出的基于PLSR的模型最小化了柔性模式下操作所产生的前核精度的限制，提供可靠，快速的监测效率。此外，结果还示出了所提出的模型提供了一种图形控制指南，其通过优先化，减少，综合和可管理的PWR物理参数集实现。对该图形指南的分析表明，它提供了精细控制调谐，其在许多情况下为操作员留下，因此通过使运营商必须在瞬态突发期间必须注意额外的任务来最小化人类误差。在本文的上下文中，进行了一种负载测试，以确定所提出的技术的效率。在1号Tihange核电站，比利时（三环PWR，2873 MWTH，962 MWE网）上观察到测试数据。使用SIMCA软件包开发和验证了用于连续监测的连续模型的基于PLSR的模型，并验证了图形控制指南。 （c）2021 elestvier有限公司保留所有权利。

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