| ACPR1000主回路与稳压器硼浓度差仿真分析 |
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| 引用本文： | 姜夏岚,李辉,秦治国.ACPR1000主回路与稳压器硼浓度差仿真分析[J].核动力工程,2020,41(5):110-115. |
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| 作者姓名： | 姜夏岚 李辉 秦治国 |
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| 作者单位： | 中广核(北京)仿真技术有限公司,广东深圳,518031,阳江核电有限公司,广东阳江,529941,中广核(北京)仿真技术有限公司,广东深圳,518031 |
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| 摘 要： | 为了解决中国改进型百万千瓦级压水堆核电站（ACPR1000）在正常稀释与硼化过程中可能产生的主回路与稳压器硼浓度差过大的问题，防止意外违反机组运行技术规范，对硼浓度差的产生原因进行了理论分析，并使用三维瞬态物理热工耦合程序（RELAP5-3D）对反应堆冷却剂系统进行堆芯物理和热工水力建模，应用仿真平台模拟了核岛辅助及相关控制系统，使用由这些系统模型组成的全范围模拟机综合分析了各因素的影响，定量计算在快速硼化瞬态下的硼浓度差。结合机组运行规程与实验数据进行分析，结果表明:硼浓度差的幅度受瞬态过程的喷淋及补水流量影响较大；依据当前运行规程执行仍可能导致机组超出运行规范要求，对此提出了改进建议。
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| 关 键 词： | 硼浓度差 硼化 稀释 稳压器 全范围模拟机 |
Simulation Analysis of Boron Concentration Difference between Primary Circuit and Pressurizer of ACPR1000 |
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| Jiang Xialan,Li Hui,Qin Zhiguo.Simulation Analysis of Boron Concentration Difference between Primary Circuit and Pressurizer of ACPR1000[J].Nuclear Power Engineering,2020,41(5):110-115. |
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| Authors: | Jiang Xialan Li Hui Qin Zhiguo |
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| Abstract: | In order to solve the problem of excessively large boron concentration difference between the primary circuit and the pressurizer in the normal dilution and boration process of Improved Chinese Pressurized Water Reactor (ACPR1000), and to prevent the accidental violation of the operating technical specifications of the unit, the cause of the difference in the boron concentration was analyzed theoretically. RELAP5-3D program was used to simulate the reactor neutronics and the thermal hydraulics of the reactor coolant system, and the simulation platform was used to simulate the nuclear island auxiliary and related control systems. The full scope simulator composed of these system models was used to comprehensively analyze the influence of various factors, and quantitatively calculate the difference in the boron concentration under the rapid boration transient. Combined with the operating regulations and experimental data of the unit, the results show that the magnitude of the difference in the boron concentration is greatly affected by the spray and charging flowrate during the transient, and the current operating procedures may lead to that the units exceeds requirements of operation specifications. So that this paper proposes improvements. |
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