| 摘要 |
PURPOSE:To find abnormality easily by finding the abnormal index of a plant including all objects of monitoring from abnormal indexes of subsystems, and displaying the found abnormal index in specific display format. CONSTITUTION:A dynamic characteristic model which simulates faithfully the dynamic characteristics of a nuclear power plant 1 in normal operation is developed previously, and current data is inputted to this model to calculate a standard value Then, the difference between the standard value of the object of monitoring and corresponding current value is calculated by a comparator 7. The relative error obtained as mentioned above is summed up, subsystem by subsystem, to calculate a subsystem abnormal index. Then, the abnormal index of the plant including all objects of monitoring is found from subsystem abnormal indexes and displayed in specific format to know abnormality easily. |
