| 基于PSA敏感性分析的核电稳压器数字控制系统可靠性研究 |
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| 引用本文： | 钱虹,柴文武,古雅琦.基于PSA敏感性分析的核电稳压器数字控制系统可靠性研究[J].原子核物理评论,2021,38(3):355-360. |
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| 作者姓名： | 钱虹 柴文武 古雅琦 |
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| 作者单位： | 1.上海电力大学自动化工程学院，上海 200090 |
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| 基金项目： | 上海市电站自动化技术重点实验室项目(13DZ2273800)；上海市科委地方能力建设项目(18020500900)；上海市自然科学基金资助项目(19ZR1420700) |
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| 摘 要： | 针对分散控制系统(Distributed Control System，DCS)可靠性设计问题，本文提出了一种基于概率安全评价(Probabilistic Safety Assessment，PSA)敏感性分析的DCS可靠性设计方法。首先，以稳压器压力输入模块高指示故障为始发事件，分析事故序列，并建立事件树模型；然后，在此基础上建立PSA敏感性分析模型来指导核电稳压器DCS可靠性设计和优化；最后，用一个算例验证了该方法的有效性。通过将输入模块可靠性优化设计后的逻辑与基准逻辑对比，结果表明基于该方法的可靠性设计对于降低堆芯损伤有良好的效果。
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| 关 键 词： | 核电分散控制系统 PSA敏感性分析 事件树 堆芯损伤概率 可靠性 |
| 收稿时间： | 2020-12-21 |
Research on the Reliability of Digital Control System in Nuclear Power Plants Based on PSA Sensitivity |
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| Hong QIAN,Wenwu CHAI,Yaqi GU.Research on the Reliability of Digital Control System in Nuclear Power Plants Based on PSA Sensitivity[J].Nuclear Physics Review,2021,38(3):355-360. |
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| Authors: | Hong QIAN Wenwu CHAI Yaqi GU |
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| Institution: | 1.College of Automation Engineering, Shanghai University of Electric Power, Shanghai 200090, China2.Shanghai Key Laboratory of Power Plant Automation Technology Shanghai 200090, China |
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| Abstract: | Distributed Control System(DCS) is being applied increasingly in nuclear power plants due to its safety and reliability operation. In this paper, a new method for optimizing the reliability of the DCS design based on the sensitivity analysis is proposed. Within this method, the accident sequences after the DCS fault was firstly analyzed, and the corresponding event tree model was built. Subsequently, a sensitivity analysis model was developed to guide the DCS reliability design. Finally, a case study was performed to validate the effectiveness of the proposed method. Results indicate that the proposed DCS reliability design method exhibited superior ability in decreasing the core damage in a nuclear power plant. |
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