| CPR1000核电厂蒸汽发生器排污系统频繁隔离原因分析与优化措施 |
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| 引用本文： | 徐颖,许金泉,杨宗伟,于航.CPR1000核电厂蒸汽发生器排污系统频繁隔离原因分析与优化措施[J].核动力工程,2019,40(6):163-167. |
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| 作者姓名： | 徐颖 许金泉 杨宗伟 于航 |
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| 作者单位： | 中广核工程有限公司核电安全监控技术与装备国家重点实验室,广东深圳,518172;中广核工程有限公司核电安全监控技术与装备国家重点实验室,广东深圳,518172;中广核工程有限公司核电安全监控技术与装备国家重点实验室,广东深圳,518172;中广核工程有限公司核电安全监控技术与装备国家重点实验室,广东深圳,518172 |
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| 摘 要： | 中国改进型三环路压水堆（CPR1000）核电厂蒸汽发生器排污系统（APG）在正常运行期间频繁自动隔离，结合此隔离事件运行背景对事件原因进行了分类研究，并对APG进行了相应优化。具体措施为对冷却水温度控制器增加了微分环节并优化了控制参数；对排污水流量控制回路增加了前馈环节以消除扰动；对排污水流量计和压力开关信号下游增加了相应延时环节；对启机阶段运行程序进行了适应性修改。某核电厂实际运行经验证明，优化后的APG运行情况良好，自动隔离事件大幅减少，运行维护成本有效较低。
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| 关 键 词： | 蒸汽发生器排污系统(APG) 控制回路 扰动 优化 |
Analysis and Optimization of Frequent Isolation of Steam Generator Blowdown System in CPR1000 Nuclear Power Plant |
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| Abstract: | The steam generator blowdown system (APG) of CPR1000 nuclear power plant is frequently automatically isolated during normal operation. In combination with the operating background of the isolation events, the causes of these events are studied, and APG is optimized. The D link is added to the cooling water temperature controller and the control parameters are optimized; the feedforward link is added to the sewage flow control loop; the corresponding delay links are added to the downstream of sewage flowmeter and pressure switch signal; the adaptive modification is made to the operation program of the start-up stage. The actual operation of the nuclear power plant has proved that the improved system is in better operation condition, the automatic isolation events are greatly reduced, and the operation and maintenance costs are effectively lowered. |
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