启动前功率量程刻度系数的算法优化和应用

The Algorithm Optimization and Application of Calibration Coefficient of Reactor Power Range before Start-up

压水堆核电厂的设计中,RPN系统功率量程是监测核功率和轴向功率偏差△I的直接途径,功率量程刻度系数是保证监测结果准确性的重要参数。由于功率量程的核功率和轴向功率偏差示值直接参与反应堆的在线保护和控制,对启动前功率量程刻度系数的设定需要仔细地考虑。文章对常规刻度系数算法进行分析,指出算法中存在的不足之处及应用上的局限性,并应用修正方案对算法进行优化,经过实践验证,新的刻度系数计算方法能更好地满足机组现场需求,具有很好的推广意义。

The power range of RPN system is a direct way to monitor nuclear power and axial power deviation△I in the design of PWR nuclear power plant,the calibrated coefficient is an important parameter to ensure the accuracy of the monitoring results.Since nuclear power and axial power deviation involved in online protection and control the reactor directly,the setting of the calibrated coefficient in the power range should be carefully considered.This article analyzes the general algorithm and points out the limitations of the algorithm.The modified algorithm is used to upgrade the results.It is verified by practical application that the new calculated method can better meets the needs,which deserves popularization.