外部干扰下压水堆的主动容错 PD 控制法

IF 1.9 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY Annals of Nuclear Energy Pub Date : 2024-11-20 DOI:10.1016/j.anucene.2024.111056
Boubacar Kirgni Hamza , Wang Junling , Lasseini Gonga Yahaya Abdoul Razak , Moussa Hassane Ayouba
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引用次数: 0

摘要

核电厂是一个复杂的时变非线性系统,必须在严格的约束条件下运行,同时遵守安全运行条件,以确保电力需求,防止电厂出现突发的电网不稳定情况。为此,本文提出了压水堆(PWR)在外部干扰下的主动容错比例和导数(PD)控制法设计。为此,反应堆堆芯的非线性动态被转换为与功率水平相关的输入/输出(I/O)二阶系统。在新模型的基础上,提出了一种控制策略,旨在检测、识别、估计和补偿执行器故障。利用 Lyapunov 稳定性理论证明了系统的稳定性,并推导出一个四重线性矩阵不等式(LMI)系统,为控制法和观测器提供增益。通过数值模拟评估了新建控制策略的性能,并进行了比较。结果表明,所设计的控制器不仅能有效管理故障和外部干扰,而且与无模型控制器(MFC)和 L1 自适应鲁棒控制器(L1 ARC)相比,表现出卓越的性能。
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Active fault tolerant PD control law for PWRs under external disturbance
NPP is a complex time varying nonlinear system that have to operate under severe constraints while complying with safe operating conditions in order to ensure the power demand and prevent the plant from contingent network instability. Towards this goal, this paper proposes the design of active fault tolerant proportional and derivative (PD) control law for Pressurized Water Reactors (PWRs) under external disturbance. To achieve this, the reactor core’s nonlinear dynamic is transformed into input/output (I/O) second-order system with respect to the power level. Based on the new model, a control strategy is proposed that aims to detect, identify, estimate and compensate for actuator faults. The stability of the system is proven using Lyapunov stability theory, where a quadruple Linear Matrix Inequalities (LMIs) system is derived to provide gains for both the control law and observer. Numerical simulations are conducted to assess the performance of the newly built control strategy and a comparison has been made. It follows that the designed controller not only effectively manages faults and external disturbances but also demonstrate exceptional performance when compared to the model-free controller (MFC) and the L1 adaptive robust controller (L1 ARC).
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来源期刊
Annals of Nuclear Energy
Annals of Nuclear Energy 工程技术-核科学技术
CiteScore
4.30
自引率
21.10%
发文量
632
审稿时长
7.3 months
期刊介绍: Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.
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