JPH09101818A - System for monitoring reactor core performance - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reactor core performance monitoring system having high reliability in data including a reactor core state and capable of reducing operator's burden. SOLUTION: A reactor core performance calculation end judging part 13 judges whether the calculation of reactor core performance by a reactor core performance calculating part 6 is normally ended or not, and at the time of judging the normal end of the calculation, data including a reactor core state are automatically saved to a reactor core state including data saving device 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a core performance monitoring system for monitoring a core state of a nuclear reactor in a nuclear power plant.

[0002]

2. Description of the Related Art Generally, when operating and managing a nuclear power plant, it is essential to monitor the core performance of a nuclear reactor in order to understand the state of the core.

Normally, the core performance is monitored by a core performance calculation which calculates a three-dimensional detailed power distribution of the reactor fuel loaded in the reactor core. To do this, reactor pressure, reactor flow,
Not only plant data such as neutron flux data from the neutron detector installed in the reactor but also cumulative data such as fuel burnup up to the present and historical data such as xenon are required.

In the core performance calculation, three-dimensional power distribution is calculated by physical simulation of the core,
The integrated data and history data are updated with the calculation result. At the end of the core performance calculation, these plant data, integrated data, history data, nuclear fuel output data, etc. are combined and updated as core state comprehensive data for each core performance calculation.

As such a core performance calculation code,
For example, the literature M. Tuiki et al; ”Convergence and Ac
celeration of Void Iteration in Boiling Water Reac
torCore Calculations ", Nucl. Sci. Eng., 64,724-
Something like 732 (1977) is used.

Since the xenon data used as past data and the combustion data for each nuclear fuel are cumulative data (integrated data) from the start of the plant, the abnormality of the input plant data and the memory of the core performance monitoring system are stored. If part or all of the data becomes abnormal due to an abnormality in the equipment, the output of the reactor fuel cannot be calculated, and core performance monitoring may not be possible. In other words, the condition of the core state comprehensive data to be stored is that the amount, timing and contents of the data are accurate and latest, that is, the data is sound.

Therefore, if the core state comprehensive data to be stored does not satisfy such a condition, the core performance calculation cannot be continued or the core state cannot be continuously monitored. Therefore, at present, in preparation for the destruction of the core state comprehensive data stored in the storage device of the core performance monitoring system, the operator periodically stores the core state comprehensive data in a storage device other than the storage device, for example, a magnetic tape. And
When the core state comprehensive data is destroyed, the core state comprehensive data manually saved on the magnetic tape is restored to the storage device, and the core performance monitoring is restarted.

FIG. 14 shows a conventional core performance monitoring system. The plant data a obtained by the sensors from the core (reactor) 1 and the plant 2 is collected by the data receiving unit 4. The data receiving unit 4 periodically repeats data reception. The calculation cycle management unit 5 sends a calculation request b to the core performance calculation unit 6 at the execution timing of the core performance calculation. The calculation cycle of the core performance calculation is activated once per hour in response to the request b from the calculation cycle management unit 5. Also,
It can also be activated at the request b1 of the operator.

When the calculation request b or the operator request b1 is input, the core performance calculation unit 6 inputs the plant data a from the data reception unit 4 and the past (previous) data from the core state comprehensive data storage unit 8. The core performance calculation data c is input, and the current core state is calculated based on these data. Then, the core performance calculation result c1 is sent to the core performance calculation result output unit 11 and output to a printer device or the like.

On the other hand, the core performance calculation result c1 is sent to the core state comprehensive data storage unit 8 and stored as the base data for the next core performance calculation. Since the core data is extremely important data, in order to provide a backup in case of an accident, a backup is made by the operator about once a week, and from the core state comprehensive data storage unit 8 from the core state comprehensive data storage unit 8 according to the operator's request d. The core performance calculation result c1 is output and stored on the magnetic tape 9 via the tape input / output unit 3.

When the data stored in the core state comprehensive data storage unit 8 is destroyed for some reason, the core state comprehensive data magnetic tape input / output unit 3 causes the magnetic tape 9 to be written at the request d of the operator. Sends the restoration data c11 from the core state comprehensive data storage unit 8 to restore the core state comprehensive data c.

[0012] Here, if the equipment constituting the core performance monitoring system fails for some reason, the computer constituting the core monitoring system may stop as a result. When the computer stops during the calculation of the periodic core state comprehensive data, the core performance calculation result data is saved only halfway. As a result, the consistency between the data is lost and the data becomes meaningless, and in some cases, the data may be destroyed.

In this case, since the sound core state comprehensive data is not stored even when the computer is restored, the core performance cannot be calculated and the core performance monitoring cannot be continuously performed. Therefore, in order to restart the core performance monitoring, the core state comprehensive data collected by the operator is restored from the magnetic tape, and the procedure for recovering the core state comprehensive data is taken.

[0014]

Since it takes a great deal of time for the operator to collect the core state comprehensive data every time the core performance calculation is performed periodically, the core state comprehensive data is collected once a week. It has been collected. Therefore, the core state comprehensive data for restarting the core performance calculation is often old, and since the core performance calculation is continued by complementing the old data up to the present time, the accuracy of the calculation result becomes poor. There is.

Further, at the time of starting the plant, the plant state and the core state fluctuate greatly, and the core state is different from the periodic timing. Therefore, also in this case, the operator manually calculates the core performance. It was necessary to request and update the comprehensive core state data, in which case the operator's burden was heavy.

An object of the present invention is to provide a core performance monitoring system which has high reliability of core state comprehensive data and which can reduce the burden on operators.

[0017]

The invention according to claim 1 is a data receiving section for inputting plant data from a core of a nuclear reactor at a predetermined cycle, and a plant data which is started at the execution timing of core performance calculation. And a core performance calculation unit that calculates the core state comprehensive data of this time based on the previously calculated core state comprehensive data, and a core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit And the core performance calculation end determination unit that determines whether the core performance calculation in the core performance calculation unit has ended normally, and the determination in the core performance calculation end determination unit that the core performance calculation ends normally A core state comprehensive data saving device input / output unit for storing the core state comprehensive data updated and stored in the core state comprehensive data saving unit in the core state comprehensive data saving device Those were.

According to the first aspect of the present invention, the core performance calculation end determination unit determines whether or not the core performance calculation by the core performance calculation unit is normally completed, and it is determined that the core performance calculation is normally completed. In this case, the core state comprehensive data is automatically saved in the core state comprehensive data saving device.

According to a second aspect of the present invention, in the first aspect of the present invention, the core state comprehensive data saving device is a constant time saving device for storing core state comprehensive data every one hour.
It consists of a daily final evacuation device for storing the final day core state comprehensive data and a monthly final evacuation device for storing the last one month final core state comprehensive data. When it is midnight on the next day, the daily report data calculation unit that updates the daily report data part of the core state comprehensive data in the core state comprehensive data storage unit and stores it in the core state comprehensive data storage unit, and the execution timing of the core performance calculation Is midnight of the following month, the monthly report data calculation unit updates the monthly report data part of the core state comprehensive data in the core state comprehensive data storage unit and stores it in the core state comprehensive data storage unit, and the core every hour. Comprehensive data on state is stored in a regular time evacuation unit, final core data for one day calculated by the daily report data calculation unit is stored in a daily final evacuation unit, and one is calculated by the monthly report data calculation unit. The final core state comprehensive data on the month end for retracting device, in which a retraction device automatic adjusting unit for storing each dispensed to.

According to the invention of claim 2, in addition to the operation of the invention of claim 1, the evacuation device automatic adjusting section automatically saves the calculated core state comprehensive data according to the calculation timing condition. Evacuate to the device. That is, the core state comprehensive data calculated by the performance calculation in the core performance calculation unit, the final core state comprehensive data of one day calculated by the daily report data calculation unit, and the final core state of one month calculated by the monthly report data calculation unit The comprehensive data is saved to the fixed time save device, the day end save device, and the month end save device, respectively.

According to a third aspect of the present invention, in the second aspect of the present invention, a core state comprehensive data abnormality detection unit for determining whether or not the core state comprehensive data of the core state comprehensive data storage unit is normal, and the core state comprehensive data. When the data abnormality detection unit detects an abnormality in the core state comprehensive data, the alarm output device outputs the abnormality information.

According to the invention of claim 3, in addition to the operation of the invention of claim 2, the core state comprehensive data abnormality detecting section periodically checks the soundness of the latest core state comprehensive data calculated from the result of the performance calculation. The alarm is output to the alarm output device to notify the operator when an abnormality occurs.

According to a fourth aspect of the present invention, in the third aspect of the invention, when the core state comprehensive data abnormality detection unit detects an abnormality in the core state comprehensive data, the optimum recovery data in the core state comprehensive data saving device is determined. It is equipped with an optimal evacuation data determination and restoration unit that is sent to the core state comprehensive data storage unit.

According to the invention of claim 4, in addition to the operation of the invention of claim 3, the optimum evacuation data determination / restoring unit determines that the core state comprehensive data calculated from the result of the core performance calculation is abnormal, Optimal core state comprehensive data for recovery is automatically selected from the comprehensive data saving device and output to the core state comprehensive data storage unit.

According to a fifth aspect of the present invention, a data receiving unit for inputting plant data from the core of the nuclear reactor in a predetermined cycle, and the plant data and the previously calculated core state which are started at the execution timing of the core performance calculation. The core performance calculation unit that calculates the core state comprehensive data of this time based on the comprehensive data, the core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit, and the plant that was input this time A core data change monitoring unit for activating the core performance calculation unit when the amount of change between the data and the previously input plant data is larger than a predetermined value is provided.

According to the fifth aspect of the present invention, when the core data change monitoring unit detects that the preset condition for changing core data has deviated, the core performance calculation unit is activated to start the core performance calculation.

According to the invention of claim 6, a data receiving section for inputting plant data from the core of the nuclear reactor at a predetermined cycle, and the plant data and the core state calculated last time which are started at the execution timing of the core performance calculation. A core performance calculation unit that calculates the core state comprehensive data of this time based on the comprehensive data, a core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit, and created in advance The operation plan data storage unit that stores the operation plan data that is stored and the operation plan data comparison unit that determines whether the plant data matches the operation plan data and, if they match, activates the core performance calculation unit It is equipped with and.

In the invention of claim 6, the operation plan data comparison unit compares the operation plan data created in advance with the current core state, and automatically when the core state is within the predetermined operation plan data. To start the core performance calculation.

[0029]

Embodiments of the present invention will be described below. FIG. 1 is a block diagram showing the first embodiment of the present invention. The first embodiment is different from the conventional example shown in FIG. 14 in that a core performance calculation end determination unit 13 that determines whether or not the core performance calculation in the core performance calculation unit 6 is normally completed is provided. A core state comprehensive data saving device 16 is provided in place of the magnetic tape 9, and a core state comprehensive data saving device input / output part 18 is provided in place of the core state comprehensive data magnetic tape input / output part 3. That is, the core state comprehensive data saving device 16 updates the core state calculation result c1 updated and stored in the core state comprehensive data storage unit 16 when the determination by the core performance calculation end determination unit 13 is normal end of the core performance calculation. Is stored, and the core state comprehensive data saving device input / output unit 18 performs control for storage at that time.

Thus, the core performance calculation end determination unit 13 determines whether or not the core performance calculation by the core performance calculation unit 6 is normally completed, and when it is determined that the core performance calculation is normally completed. , The core state comprehensive data is automatically saved in the core state comprehensive data saving device 16. Therefore, if a failure occurs during the core performance calculation in the core performance calculation unit 6, the incorrect core performance calculation result will not be stored as the core state comprehensive data. Other configurations are shown in FIG.
4 are the same as those shown in FIG.

In FIG. 1, plant data a obtained by a sensor from a core (reactor) 1 and a plant 2
Are collected by the data receiving unit 4. The data receiving unit 4 periodically repeats data reception. Calculation cycle management unit 5
Sends a calculation request b to the core performance calculation unit 6 at the core performance calculation execution timing. The core performance calculation unit 6 inputs the plant data 7 from the data reception unit 4. In the core performance calculation unit 6, the plant data a input from the data reception unit 4 and the past (previous) core state comprehensive data c input from the core state comprehensive data storage unit 8 are input to calculate the current core state. . Then, the core performance calculation result c1 is sent to the core calculation result output unit 11 and is output to a printer device or the like, while the core performance calculation result c1 is sent to the core state comprehensive data storage unit 8 to be used as the basic data for the next calculation. Store.

After calculating the current core state, the core performance calculation unit 6 sends the calculation end information e to the calculation cycle management unit 5 and also sends the core performance calculation result c to the core performance calculation end determination unit 13.
Send 1 Upon receiving the calculation end information e, the calculation cycle management unit 5 sends a judgment request f to the core performance calculation end judgment unit 13. When the core performance calculation result c1 ends normally, the core performance calculation end determination unit 13 determines the core state data saving device 16
To the core state comprehensive data saving device input / output unit 18.

Core state comprehensive data saving device input / output unit 18
Outputs the storage data c1 from the core state comprehensive data storage unit 8 to the core state comprehensive data saving device 16. The configuration of the storage area unit 17 of the core state comprehensive data saving device 16 is shown in FIG.
Shown in The storage area unit 17 of the core state comprehensive data saving device 16 is configured to be able to save up to N pieces of saved data once. Saved data is saved in order from 1,
After being stored up to N, the oldest data, that is, the first data is overwritten. That is, the core state comprehensive data saving device 16 cyclically saves data.

In the unlikely event that the data in the core state comprehensive data storage unit 8 becomes abnormal, the data in the core state comprehensive data storage unit 8 is restored, and the restoration method in that case will be described below. When the data in the core state comprehensive data storage unit 8 becomes abnormal, the operator receives the data restoration command d.
Is sent to the core state comprehensive data saving device input / output unit 18. The core state comprehensive data saving device input / output unit 18 confirms the date of each data in the core state comprehensive data saving device 16 and sends the latest data to the core state comprehensive data saving unit 8 to complete the restoration.

As described above, according to the first embodiment, after the core performance calculation, the core performance calculation result is automatically saved in the core state comprehensive data saving device 16, so that the load of the operator is reduced. Enables reduction. In addition, the latest comprehensive core state data can be restored at all times, increasing the reliability of the data.

Next, a second embodiment of the present invention will be described. FIG. 3 is a block diagram showing a second embodiment of the present invention. The second embodiment is different from the first embodiment shown in FIG. 1 in that the core state comprehensive data saving device 1
Reference numeral 6 designates a constant-time evacuation device 16a for storing the core state comprehensive data for every one hour, a daily final evacuation device 16b for storing the final core state comprehensive data for one day, and 1
When the execution timing of the core performance calculation is midnight of the next day, the core state comprehensive data storage unit 8 includes the core state comprehensive data storage unit 8 for storing the final core state comprehensive data of the month. A daily report data calculation unit 24 that updates the daily report data portion of the data and updates and stores it in the core state comprehensive data storage unit 8, and a core state comprehensive data storage unit 8 when the execution timing of the core performance calculation is midnight of the next month. Of the core state comprehensive data of the above is updated and stored in the core state comprehensive data storage unit 8 and the monthly report data calculating unit 25 is updated. The final core comprehensive data of the day calculated by the unit 24 is used as the day final evacuation device 1.
In 6b, the evacuation device automatic adjustment unit 2 for distributing and storing the final core state comprehensive data for one month calculated by the monthly report data calculation unit 25 to the monthly final evacuation device 16c, respectively.
3 and 3.

As a result, the retractor automatic adjustment unit 23
The calculated core state comprehensive data is automatically saved in the core state comprehensive data saving device 16 for each calculation timing condition. That is, the core state comprehensive data calculated by the performance calculation in the core performance calculation unit 6 and the daily report data calculation unit 2
The final core state comprehensive data calculated in 4 and the 1 month final core state comprehensive data calculated in the monthly report data calculation unit 25 are used for the fixed time evacuation device 16a, the day final evacuation device 16b, and the monthly final data, respectively. Evacuate to the evacuation device 16c.
Other configurations are the same as those of the first embodiment shown in FIG. 1, and therefore, the same components are denoted by the same reference characters and description thereof will be omitted.

In FIG. 3, the calculation cycle management unit 5 has a first
When the core performance calculation execution timing comes, as in the embodiment described above, the calculation request b is sent to the core performance calculation unit 6. The core performance calculation unit 6 inputs the plant data a from the data reception unit 4.

In the core performance calculation unit 6, by inputting the plant data a input from the data receiving unit 4 and the past (previous) core state comprehensive calculation data c input from the core state comprehensive data storage unit 8, the present The core state comprehensive calculation result c1 is calculated and the core state comprehensive calculation result c1 is sent to the core performance calculation result output unit 11 and output to a printer or the like. On the other hand, the core state comprehensive calculation result c1 is stored in the core state comprehensive data storage unit 8 to be used as the basic data for the next calculation.

After calculating the current core state, the core performance calculation section 6 sends the calculation end information e to the calculation cycle management section 5 and also sends the core state comprehensive calculation result c1 to the core performance calculation end determination section 13. The calculation cycle management unit 5 judges the calculation execution timing, and sends the judgment request f to the core performance calculation end judgment unit 13 unless it is midnight the next day, and does not send the judgment request f if it is midnight the next day. A daily report calculation request h1 is sent to the daily report data calculation unit 24.

In response to the daily report calculation request h1, the daily report data calculation unit 24 inputs the core state comprehensive calculation result c1 stored in the core state comprehensive data storage unit 8, performs calculation, and updates the daily report data portion of the data. In order to use the result c12 as the base data for the next calculation, the core state comprehensive data storage unit 8
And the daily report calculation end information e1 is sent to the calculation cycle management unit 5. The calculation cycle management unit 5 judges the calculation execution timing, and sends the judgment request f to the core performance calculation end judgment unit 13 if it is not midnight of the next month, and does not send the judgment request f if it is midnight of the next month. , And sends a monthly report calculation request h2 to the monthly report data calculation unit 25.

According to the monthly report calculation request h2, the monthly report data calculation unit 2
5 inputs the data c12 stored in the core state comprehensive data storage unit 8, performs calculation, updates the monthly report data portion of the data, and then uses the result c13 as the base data for the next calculation. The monthly report calculation end information e2 is sent to the calculation cycle management unit 5 while being stored in the comprehensive data storage unit 8. The calculation cycle management unit 5 includes a core performance calculation end determination unit 13
Sends the judgment request f to.

The core performance calculation end determination unit 13 that has received the determination request f sends a save request g to the core state data save device 16 to the core state comprehensive data save device if the core state comprehensive calculation result c1 ends normally. It is sent to the output unit 18.

Core state comprehensive data saving device input / output unit 18
Stores the storage data 19 from the core state comprehensive data storage unit 8 by the evacuation device automatic adjustment unit 15 based on the core performance calculation execution timing. For example, the core state comprehensive data includes the regular data save device 16a if the calculation execution timing is a normal scheduled time, the daily final data save device 16b if the calculation execution timing is midnight of the next day, and the calculation execution timing is the next month. If it is midnight, the data is output to the end-of-month data saving device 16c.

The structure of the core state comprehensive data saving device 16 is shown in FIG. The regular data saving device 16a is shown in FIG.
As shown in (a), the backup data is configured to be able to store 23 pieces of saved data at one time, and the saved data is saved in order from 1 and after the 23 pieces are saved, the oldest data is overwritten. To be done. The final day data saving device 16b
As shown in FIG. 4B, the save data is configured to be able to save 30 save data at one time. The save data is saved in order from 1 and the oldest data is saved after 30 save data. Will be overwritten. End of month data saving device 16c
Indicates that the saved data for one time is 12 as shown in FIG.
The saved data is saved in order from 1, and the saved data is overwritten from the oldest data after the saved up to 12. These evacuation devices 16a,
Data is cyclically stored in 16b and 16c.

Next, a recovery method in case the data in the core state comprehensive data storage unit 8 is destroyed should be explained.
When the data in the core state comprehensive data storage unit 8 is destroyed, the operator selects any data stored in the core state comprehensive data saving device 16 and issues a restoration command d to the core state comprehensive data saving device. The data is sent to the input / output unit 18, and the core state comprehensive data evacuation device input / output unit 18 sends the data information selected by the operator to the evacuation device automatic adjustment unit 23. The evacuation device automatic adjustment unit 23 is used for the core state comprehensive data evacuation device 1
6 save devices 16a, 16b, 1 for each calculation timing
The date of each data in 6c is confirmed, suitable data is searched for, and sent to the core state comprehensive data saving device input / output unit 18, and further, the core state comprehensive data saving device input / output unit 18 retrieves the data and collects the core state comprehensive data. It is sent to the storage unit 8 and the restoration is completed.

As described above, in the second embodiment,
In contrast to the first embodiment, an evacuation device automatic adjustment unit 23 is provided, and a core state comprehensive data evacuation device 16 is provided as a regular data evacuation device 16a and a daily final data evacuation device 16b.
And the end-of-month data save device 16c, so that the calculation results of the core performance calculation that are periodically activated are adjusted according to conditions such as the end of the day and the end of the month. The device can be automatically retracted.

As a result, the latest core comprehensive data can always be restored while efficiently utilizing the limited storage area, and even in the case where the state of the data must be restored retroactively to the past. , It is possible to guarantee the data for that. Furthermore, it facilitates extraction of data for grasping long-term trends as well as short-term trends of core performance calculation results.

Next, a third embodiment of the present invention will be described. FIG. 5 is a block diagram showing a third embodiment of the present invention. The third embodiment differs from the second embodiment shown in FIG. 3 in that core state comprehensive data abnormality detection is performed to determine whether or not the core state comprehensive data in the core state comprehensive data storage unit is normal. The unit 26 and an alarm output device 28 that outputs abnormality information when the core state comprehensive data abnormality detection unit 26 detects an abnormality in the core state comprehensive data. In FIG. 5, the daily report data calculation unit 2
4 and the monthly report data calculation unit 25 are omitted.
Since other configurations are the same as those of the second embodiment shown in FIG. 3, the same elements are designated by the same reference numerals and the description thereof will be omitted.

As a result, the core state comprehensive data abnormality detecting unit 26 periodically monitors the soundness of the latest core state comprehensive data calculated from the result of the performance calculation, and informs the alarm output device 28 to that effect when abnormal. Output and notify the operator.

In FIG. 5, the calculation cycle management unit 5 makes a start request i to the core state comprehensive data abnormality detection unit 26 at a cycle shorter than the core performance calculation execution timing. The core state comprehensive data abnormality detection unit 26 collects the core state comprehensive data 31 stored in the core state comprehensive data storage unit 8 and confirms the soundness. When it is determined that an abnormality is found as a result of the confirmation, the abnormality information j is output to the alarm output device 28, and the operator is notified of the abnormality in the core state comprehensive data.

The soundness confirmation of the core state comprehensive data abnormality detection unit 26 will be described below. FIG. 6 shows the data structure of the core state comprehensive data c1. The core state comprehensive data c1 has a data start keyword A stored at the beginning of the data and a data end keyword B stored at the end of the data.

FIG. 7 shows the core state comprehensive data abnormality detection unit 2
6 shows a processing flow of soundness confirmation of No. 6. At the abnormality detection timing (S101), the core state comprehensive data abnormality detection process is started (S102). First, core state comprehensive data is input from the core state comprehensive data storage unit 8 (S103). Then, it is confirmed whether the data size is normal in the acquired core state comprehensive data (S104), and if not normal, abnormal information is output to the alarm output device 28 (for example, printer) (S106).

If normal, then it is confirmed whether the start keyword and the end keyword match (S105). If they match, the comprehensive core state data is judged to be sound, and the process ends. If they do not match, it is determined to be abnormal, and abnormality information is output to the alarm output device 28 (for example, a printer) (S106).

As described above, the third embodiment is different from the second embodiment in that the core state comprehensive data abnormality detecting section 26 and the alarm output device 28 are provided.
When an abnormality occurs in the core state comprehensive data stored in the core state comprehensive data storage unit, an alarm is issued to notify the operator that the data needs to be restored. This makes it possible to maintain the integrity of the core state comprehensive data.

Next, a fourth embodiment of the present invention will be described. FIG. 8 is a block diagram showing a fourth embodiment of the present invention. This fourth embodiment is similar to the third embodiment shown in FIG.
Of the core state comprehensive data abnormality detection unit 2
When 6 detects an abnormality in the core state comprehensive data, the optimum state recovery data in the core state comprehensive data saving device 16 is determined, and an optimum save data determination restoration unit 32 for sending to the core state comprehensive data storage unit 8 is provided. It is a thing. FIG.
Also in FIG. 1, the daily report data calculation unit 24 and the monthly report data calculation unit 25 are omitted. Since the other structure is the same as that of the third embodiment shown in FIG. 5, the same elements are designated by the same reference numerals and the description thereof will be omitted.

As a result, the optimum saved data judgment restoration unit 3
2 indicates that when the core state comprehensive data calculated by the result of the core performance calculation is abnormal, the core state comprehensive data saving device 16 automatically selects the optimum core state comprehensive data for restoration to select the core state comprehensive data storage unit. Output to 8.

In FIG. 8, the calculation cycle management unit 5 issues a start request i to the core state comprehensive data abnormality detection unit 26 at a cycle shorter than the core performance calculation execution timing. The core state comprehensive data abnormality detection unit 26 collects the core state comprehensive data c1 stored in the core state comprehensive data storage unit 8,
Check the soundness. As a result of the confirmation, when it is determined that the abnormality is recognized, the core state comprehensive data abnormality notification k is sent to the optimal evacuation data determination restoration unit 32.

The core state comprehensive data abnormality detection unit 26 further sends a performance calculation cycle execution bypass notification m to the calculation cycle management unit 5. The calculation cycle management unit 5, which has detected the performance calculation cycle execution bypass notification m, automatically adjusts the performance calculation cycle until the recovery completion notification n is received to maintain the reliability and safety of the core performance monitoring system. Bypass the process so that continuous calculation is not performed starting from abnormal data.

The optimum evacuation data determination restoration unit 32 sends a restoration request p to the core state comprehensive data evacuation device input / output unit 18. The core state comprehensive data evacuation device input / output unit 18 selects the latest evacuation data 21 from the core state comprehensive data evacuation device 16 by the evacuation device automatic adjustment unit 23 and stores it in the core state comprehensive data storage unit 8 as well as the core. The recovery completion notification n1 is sent to the state comprehensive data abnormality detection unit 26. In response to this, the core state comprehensive data abnormality detection unit 26 sends a restoration completion notification n to the calculation cycle management unit 5. The calculation cycle management unit 5
Upon receiving the restoration completion notification n, the periodic execution of the core performance calculation is restored.

As described above, in the fourth embodiment,
In contrast to the third embodiment, an optimum save data determination / restoration unit 32 at the time of abnormality detection is further provided, and the optimum save data determination / restoration unit 32 is based on the information obtained by the core state comprehensive data abnormality detection unit 26. Since the optimum data is determined from the data in the core state comprehensive data saving device 16 and automatically restored, it is possible to reduce the load on the operator when an abnormality occurs and maintain the integrity of the core state comprehensive data. Become.

Next explained is the fifth embodiment of the invention. FIG. 9 is a block diagram showing a fifth embodiment of the present invention. This fifth embodiment differs from the conventional example shown in FIG. 14 in that when the amount of change between the plant data ai input this time and the plant data ai-1 input last time is larger than a predetermined value, the core performance A core data change monitoring unit 15 for activating the calculation unit 6 is provided. When the core data change monitoring unit 15 detects that the preset core data change condition is deviated, the core performance calculation unit 6 is activated to start the core performance calculation. Since other configurations are the same as those of the conventional example shown in FIG. 14, the same reference numerals are given to the same elements, and the description thereof will be omitted.

In FIG. 9, plant data a obtained by sensors from the core (reactor) 1 and the plant 2
Are collected by the data receiving unit 4. The data receiving unit 4
Data reception is repeated periodically. The calculation cycle management unit 5 uses the core data change monitoring unit 15 at a cycle that is the same as or longer than the data reception cycle of the data reception section 4.
A plant data monitoring request q is sent to.

Upon receiving the monitoring request q, the core data change monitoring unit 15 receives the current plant data ai from the data receiving unit 4.
Take in. In the core data change monitoring unit 15, the previous plant data ai-1 input for the previous monitoring is stored. For example, the previous main plant data ai-1 such as the generator output, core flow rate, control rod pattern, etc. is stored, and when the main plant data ai received by the data receiving unit 4 is input, The main plant data ai-1 of the above is compared.

The core data change monitoring unit 15 sends a core performance calculation start request r to the core performance calculation unit 6 when it judges that the change is large based on the result of comparison with the previous value. The core performance calculation unit 6 inputs the current main plant data ai and the past calculation data c11 from the core state comprehensive data storage unit 8 and calculates the current core state.

A method of comparing the previous main plant data ai-1 and the current main plant data ai in the core data change monitoring unit 15 will be described with reference to FIG.
When the monitoring request q is received from the calculation cycle management unit 5, the core data change monitoring unit 15 collects the main plant data ai of this time from the data receiving unit 4 (S254). The data to be collected are, for example, main plant data such as generator output, core flow rate, and control rod pattern. Next, the main plant data ai-1 collected at the previous startup is stored in the previous data storage unit 14, and the previous data is collected from there (S256). Based on the data obtained in step (S254) and step (S256), it is determined whether to perform core performance calculation (S257 to S25).
9).

That is, the change in the generator output is ± 5% or more of the rated output (S257), and the flow rate change of the core 1 is ± 5% or more of the rated flow (S257).
258), it is determined whether or not the condition is satisfied for the main plant data a such as that the change of the control rod pattern is 10 positions or more (S259).

If any of these conditions is satisfied, it is determined that the core state change is large, and the core performance calculation start request r is sent to the core performance calculation unit 6 (S260).
Thereafter, the data collected this time is saved in the previous time data saving unit 14 for the next comparison (S262), and the process ends (S2).
63).

As described above, in the fifth embodiment, the core data change monitoring unit 15 monitors the fluctuation of the core data and automatically calculates the core performance when the change of the core data is large. The number of core performance calculation execution requests arbitrarily requested by the operator will be reduced, and the burden on the operator can be reduced. In addition, the core performance calculation data due to fluctuations in the core data will be reliably calculated, and the reliability of the data will be increased.

Next, a sixth embodiment of the present invention will be described. FIG. 11 is a block diagram showing a sixth embodiment of the present invention. The sixth embodiment is different from the conventional example shown in FIG. 14 in that the operation plan data storage unit 10 that stores the operation plan data created in advance and the plant data a match the operation plan data. It is provided with an operation plan data comparison unit 12 that activates the core performance calculation unit 6 when it is determined whether or not they match. Thereby, the operation plan data comparison unit 12 compares the operation plan data created in advance with the current core state, and automatically starts the core performance calculation when the core state is within the predetermined operation plan data. To do. Since other configurations are the same as those of the conventional example shown in FIG. 14, the same reference numerals are given to the same elements, and the description thereof will be omitted.

In FIG. 11, the plant data a obtained by the sensors from the core (reactor) 1 and the plant 2 is collected by the data receiving unit 4. Data receiving unit 4
Repeats data reception periodically. The calculation cycle management unit 5 sends a plant data monitoring request q1 to the operation plan data comparison unit 12 at a cycle that is the same as or longer than the data reception cycle of the data reception unit 4.

Upon receiving the monitoring request q1, the operation plan data comparison unit 12 receives the current plant data a from the data reception unit 4.
Take in i. The operation plan data comparison unit 12 takes in the operation plan data a1 previously created by the operator from the operation plan data storage unit 10 and compares the operation plan data a1 with the plant data ai.

The operation plan data comparison unit 12 sends a core performance calculation start request r1 to the core performance calculation unit 6 when the plant data ai matches the operation plan data a1 according to the comparison result. The core performance calculation unit 6 inputs the present plant data ai and the past calculation data c11 from the core state comprehensive data storage unit 8 and calculates the present core state.

The operation plan data a1 set by the operator before starting the plant will be described with reference to FIG. The operation plan data a1 is created for each operation breakpoint (operation stage) in the plant starting process, with the target generator output, target core flow rate, and control rod pattern number at that time. As the control rod pattern number, a control rod pattern assumed in operation is registered in advance as a number. Further, whether or not to execute the core performance calculation is set for each break point.

The procedure for comparing the operation plan data a1 and the plant data ai by the operation plan data comparison unit 12 is shown in FIG.
3 will be described. In FIG. 13, when the monitoring request q1 from the calculation cycle management unit 5 arrives, the operation plan data comparison unit 12 collects plant data from the data reception unit 4 (S355). Next, the operation plan data is collected from the operation plan data storage unit 10 (S356). In order to compare with the operation plan data for each break point, first, the break point counter BP is initialized (S357), and the data is compared from the first break point of the operation plan data in FIG. 12 (S358 to S361).

That is, whether the generator output matches the planned data within 5% of the rating (S358), the core flow rate matches the planned data within 5% of the rating (S359), and the control rod pattern is the planned data. Is determined (S360). Furthermore, it is confirmed whether or not the calculation is necessary (S36
1) If all are applicable, it is determined that the breakpoint is applicable, and a core performance calculation execution request r1 is sent to the core performance calculation unit 6 (S362). If there is any condition that does not correspond to the above comparison contents, the counter BP is counted up (S363), the counter BP is compared with the maximum number of breakpoints (S364), and the current breakpoint is reached until the maximum breakpoint is reached. The data is compared, and when it is completed, the process ends (S365).

As described above, in the sixth embodiment, the core performance calculation is automatically executed on the basis of the operation plan data planned before the start of the plant, which reduces the burden on the operator and is required in advance. It is possible to reliably acquire the data of the existing core state.

[0078]

As described above, according to the present invention, it is possible to provide a core performance monitoring system in which the load on the operator is reduced and the core state comprehensive data is highly reliable.

That is, according to the first aspect of the present invention, the calculation result is automatically saved in the core state comprehensive data saving device after the core performance is calculated, so that the load on the operator can be reduced and the latest result can always be obtained. It will be possible to recover the core state comprehensive data, and the reliability of the data will increase.

According to the second aspect of the present invention, the evacuation device automatic adjustment unit adjusts the calculation results of the core performance calculation that is periodically activated, for example, according to the conditions such as the end of the day and the end of the month. By automatically saving to the core state comprehensive data save device, it is possible to use the limited storage area efficiently and always recover the latest core state comprehensive data. Even if the data must be restored, it is possible to guarantee the data for that. Furthermore, it facilitates extraction of data for grasping long-term trends as well as short-term trends of core performance calculation results.

According to the third aspect of the present invention, since the core state comprehensive data abnormality detection unit periodically monitors the soundness of the data stored in the core state comprehensive data storage unit, an abnormality is detected in the core state comprehensive data. If an alarm occurs, it will trigger an alarm,
It is possible to notify the operator that data recovery is necessary. Therefore, it is possible to maintain the soundness of the data.

According to the invention of claim 4, the optimum data is determined from the data in the core state comprehensive data saving device on the basis of the information obtained by the core state comprehensive data abnormality detecting section, and the data is automatically restored. As a result, it is possible to reduce the load on the operator when an abnormality occurs and maintain the soundness of data.

According to the fifth aspect of the present invention, the core data change monitoring unit monitors the fluctuation of the core data, and when the core data changes largely, the core performance calculation is automatically performed, whereby the operator can arbitrarily select This will reduce the core performance calculation execution requirements required for the above and reduce the burden on operators. In addition, core performance calculation data is reliably calculated due to fluctuations in core data, which increases the reliability of the data.

According to the sixth aspect of the present invention, the core performance calculation is automatically executed based on the operation plan data planned before the plant is started, so that the burden on the operator is reduced and the core which is required in advance is reduced. It is possible to reliably acquire the state data.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 2 is an explanatory diagram of a storage area unit of the core state comprehensive data saving device according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is an explanatory diagram of a core state comprehensive data saving device according to a second embodiment of the present invention.

FIG. 5 is a block diagram showing a third embodiment of the present invention.

FIG. 6 is an explanatory diagram of a data configuration of core state comprehensive data according to the third embodiment of the present invention.

FIG. 7 is a flowchart showing the processing contents of a core state comprehensive data abnormality detection unit according to the third embodiment of the present invention.

FIG. 8 is a block diagram showing a fourth embodiment of the present invention.

FIG. 9 is a block diagram showing a fifth embodiment of the present invention.

FIG. 10 is a flowchart showing the processing contents of a core state data monitoring unit of the core performance monitoring system according to the fifth embodiment of the present invention.

FIG. 11 is a block configuration diagram showing a sixth embodiment of the present invention.

FIG. 12 is an explanatory diagram of a data configuration of operation plan data according to the sixth embodiment of the present invention.

FIG. 13 is a flowchart showing the processing contents of an operation plan data comparison unit according to the sixth embodiment of the present invention.

FIG. 14 is a block diagram showing a conventional example of the present invention.

[Explanation of symbols]

 1 core 2 plant 3 core state comprehensive data magnetic tape input / output unit 4 data receiving unit 5 calculation cycle management unit 6 core performance calculation unit 8 core state comprehensive data storage unit 9 magnetic tape 10 operation plan data storage unit 11 core performance calculation result output Part 12 Operation plan data comparison part 13 Core performance calculation end determination part 14 Previous data storage part 15 Core data change monitoring part 17 Storage area part 18 Core state comprehensive data evacuation device input / output part 23 Evacuation device automatic adjustment part 24 Daily report data calculation part 25 Monthly Report Data Calculation Unit 26 Core State Comprehensive Data Abnormality Detection Unit 28 Alarm Output Device 32 Optimal Evacuation Data Judgment Recovery Unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masayuki Okada, No. 1 Shinsugita-cho, Isogo-ku, Yokohama-shi, Kanagawa, Ltd. Inside the Toshiba Corporation Yokohama office Inside the factory (72) Inventor Tsukiko Kato 1st in Toshiba Fuchu, Tokyo Fuchu factory (72) Inventor Takaomi Yamamoto 1st in Toshiba Fuchu, Tokyo Fuchu factory (72) Inventor Taku Watanabe 1-24-2, Harumi-cho, Fuchu-shi, Tokyo Inside Toshiba System Technology Co., Ltd.

Claims (6)

[Claims] 1. A data receiving unit for inputting plant data from a reactor core in a predetermined cycle, and a data receiving unit which is started at the execution timing of the core performance calculation and is based on the plant data and previously calculated core state comprehensive data. And the core performance calculation unit that calculates comprehensive core state data this time,
In a core performance monitoring system including a core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit, the core performance calculation in the core performance calculation unit ends normally. When the core performance calculation end determination unit that determines whether or not the core performance calculation end determination unit is a normal end of the core performance calculation, the core updated and stored in the core state comprehensive data storage unit A core performance monitoring system comprising: a core state comprehensive data saving device input / output unit for storing state comprehensive data in a core state comprehensive data saving device. 2. The core state comprehensive data saving device is 1
A fixed-time evacuation device for storing hourly core state comprehensive data, a daily final evacuation device for storing the final core state comprehensive data for one day, and a final core state comprehensive data for one month When the execution timing of the core performance calculation is midnight of the next day, the daily report data portion of the core state comprehensive data of the core state comprehensive data storage unit is updated to A daily report data calculation section for updating and storing in the core state comprehensive data storage section,
When the execution timing of the core performance calculation is at midnight of the next month, the monthly report data part of the comprehensive core state data of the core state comprehensive data storage unit is updated and updated and stored in the core state comprehensive data storage unit. Section and the core state comprehensive data every 1 hour to the constant time evacuation device,
The final core state comprehensive data of one day calculated by the daily report data calculation unit is stored in the daily final evacuation device, and the final one month core state comprehensive data calculated by the monthly report data calculation unit is stored in the monthly final evacuation device. 2. The core performance monitoring system according to claim 1, further comprising: the retractor automatic adjustment unit for distributing and storing each. 3. A core state comprehensive data abnormality detection unit for determining whether or not the core state comprehensive data in the core state comprehensive data storage unit is normal, and the core state comprehensive data abnormality detection unit for the core state comprehensive data abnormality detection unit. The core performance monitoring system according to claim 2, further comprising an alarm output device that outputs abnormality information when an abnormality is detected in the data. 4. When the core state comprehensive data abnormality detecting unit detects an abnormality in the core state comprehensive data, the optimum state recovery data in the core state comprehensive data saving device is determined and stored in the core state comprehensive data storage unit. The core performance monitoring system according to claim 3, further comprising: an optimum save data determination / restoring unit for sending. 5. A data receiving unit for inputting plant data from the core of a nuclear reactor at a predetermined cycle, and a data receiving unit which is started at the execution timing of core performance calculation and is based on the plant data and the comprehensive core state data calculated last time. And the core performance calculation unit that calculates comprehensive core state data this time,
In a core performance monitoring system having a core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit, between the plant data input this time and the plant data input last time A core performance monitoring system comprising a core data change monitoring unit for activating the core performance calculation unit when the amount of change is larger than a predetermined value. 6. A data receiving unit for inputting plant data from the core of a nuclear reactor at a predetermined cycle, and a data receiving unit which is started at the execution timing of the core performance calculation and is based on the plant data and the comprehensive core state data calculated last time. And the core performance calculation unit that calculates comprehensive core state data this time,
In a core performance monitoring system including a core state comprehensive data storage unit that updates and stores the core state comprehensive data calculated by the core performance calculation unit, an operation that stores operation plan data created in advance A plan data storage unit and an operation plan data comparison unit that determines whether or not the plant data matches the operation plan data and starts the core performance calculation unit when they match And core performance monitoring system.