Evaluation, Diagnosis and Optimization Analysis of Control Performance of Nuclear Power Unit Transient Process
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摘要: 复杂控制系统是核电厂仪控系统的重要组成部分，其作用是保证系统运行状态的平稳，因而对控制系统的性能验证评价是机组调试工作的重要内容。通过构建机组控制系统调试试验性能评价标准体系，提出了一种控制系统性能评价与缺陷诊断方法，对机组特定瞬态运行过程进行诊断和控制系统优化。该研究成果已在多个核电基地得到了现场实际应用，在机组启动阶段全面验证了复杂控制系统的逻辑故障和性能缺陷，提升了机组控制性能和安全运行水平。Abstract: The complex control system is an important component of the instrument and control system in nuclear power plants, and its function is to ensure the smooth operation of the system. Therefore, the performance verification and evaluation of the control system is an important part of unit debugging. By constructing a performance evaluation standard system for unit control system debugging and testing, a control system performance evaluation and defect diagnosis method is proposed to diagnose and optimize the specific transient operation process of the unit. This research achievement has been applied in multiple nuclear power bases, and the logic faults and performance defects of complex control systems have been fully verified in the start-up stage of the unit, which has improved the control performance and safe operation level of the unit.
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Key words:
- Nuclear power plant /
- Complex control system /
- Transient /
- Performance evaluation /
- Diagnosis /
- Optimization
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图 3 瞬态过程控制系统评价指标体系
Figure 3. Evaluation Index System for Transient Process Control System
图 4 控制系统评价诊断体系示意图
Figure 4. Schematic Diagram of Evaluation and Diagnosis System for Control system
图 5 瞬态试验准则及过程偏差量化评价指标
Figure 5. Criteria for Transient Test Results and Quantitative Evaluation of Process Deviations
图 6 基于多源数据融合的瞬态性能在线评价与智能优化诊断技术示意图
Figure 6. Schematic Diagram of Transient Performance On-line Evaluation and Intelligent Optimization Diagnosis Technology Based on Multi-source Data Fusion
图 9 稳压器压力控制系统瞬态响应图
Figure 9. Transient Response Diagram of Pressurizer Pressure Control System
表 1 原始ZN整定
Table 1. Original ZN Setting
控制器 Kp Ti Td P 0.5Ku PI 0.45Ku 0.83Tu PID 0.6Ku 0.5Tu 0.125Tu Kp—比例调节系数；Ti—积分时间；Td—微分时间 
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表 2 稳压器压力控制系统瞬态响应评价结果
Table 2. Transient Response Results of Pressurizer Pressure Control System
参数 数值 峰值/MPa 15.34 峰值时间/s 1330（相对值） 余差 0.01 调整时间/s 2272（相对值） 超调量 12% 衰减比 0 上升时间/s 980（相对值） 积分平方误差（ISE） 44.2 最小方差准则控制指标 0.25
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