A method and system for monitoring the operation of switching equipment in a nuclear power plant

Abstract

The present invention relates to the technical field of nuclear power plant equipment monitoring, and discloses a method and system for monitoring the action of switch quantity equipment in a nuclear power plant. The method compares the action changes of all equipment within a time period, records the number of changes and the specific time of the changes, and directly assigns the traversed data to the temporary variable if the temporary variable is empty. If the temporary variable is not empty, it is determined whether the value of the temporary variable is the same as the variable value. If the value of the temporary variable is the same as the variable value, the next value is traversed. If the values ​​are different, it is determined that the data has changed, the change is input into the result of the data comparison module, and the current data is assigned to the temporary variable, and the next data is traversed. The system includes an automatic display module, a query display module, a data comparison module and a drawing association module, and the data comparison module is used to determine whether the temporary variable is empty. The present invention enables the main control operator to grasp the action of all equipment of the nuclear power unit under his jurisdiction in real time and efficiently.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear power plant equipment monitoring, and in particular to a method and system for monitoring the action of switching quantity equipment in a nuclear power plant. Background Art

[0002] Nuclear power plants are technology-intensive industries. Taking a third-generation nuclear power unit as an example, each nuclear power unit has more than 30,000 switching devices of various types, and the total number of switching devices that operate every 8 hours exceeds 10,000 times. The distributed control system (DCS system) in the main control room of a nuclear power plant will record the operation of these devices. The operator in the main control room of a nuclear power plant (hereinafter referred to as the main control operator) needs to pay attention to the equipment operation of the unit to analyze whether the equipment operation has an impact and threat to the safe operation of the nuclear power unit. The main control operator will check the process screen in the DCS system through patrol inspections, find the equipment operation status, and identify and analyze whether the operation response of these devices is normal. At present, the main control operator mainly identifies the equipment operation by checking the alarm function of the DCS system and the action information of some instrumentation and control equipment, and passively monitors the equipment operation by checking the equipment status displayed on the integrated screen of the DCS system.

[0003] However, the existing switch quantity equipment action monitoring technology has the following problems:

[0004] 1. Existing motion detection technology cannot easily query the motion status of all equipment in any time period, and this function is very important for the main control operator to control the current status of the unit as a whole and analyze historical events.

[0005] 2. When manually looking through the DCS system screen to find the action of the switch quantity equipment, if the equipment has been in action but has now returned to its original state, and if the equipment action does not introduce any alarm or immediately cause obvious changes in process parameters, the main control operator still cannot easily find and identify the equipment action phenomenon. The process of the main control operator looking through the system screen to find abnormal equipment action is very time-consuming and labor-intensive, which can easily cause fatigue to the main control operator and result in low returns.

[0006] 3. Many alarms in nuclear power plants are comprehensive alarms, and some complex comprehensive alarms have hundreds of triggering reasons. In the past, the method of analyzing comprehensive alarms relied on the personal skills of the main control operator, checking the logic diagram, and screening the possible causes one by one from top to bottom. This was very inefficient, required high skills of personnel, and delayed the time to find the cause of the problem.

[0007] 4. Some nuclear power plant DCS systems also have the function of switching device action list, but this function often only displays the status changes of important equipment and the changes of important valve limits and the change trends of some switching quantities, and cannot achieve unified monitoring of all switching devices. Moreover, this type of equipment action list does not directly count the number of equipment actions, and does not intuitively display this equipment action data to users, reducing the possibility of users discovering potential defects by comparing the number of equipment actions.

[0008] 5. The DCS system equipment action list of some nuclear power plants displays the equipment action status in chronological order. In the daily production process of nuclear power plants, there are often repeated flipping points or repeated alarms, which leads to a large amount of redundant information of the repeated flipping of the points in the DCS system equipment action list, which in turn affects the efficiency of the main control operator in monitoring the unit and reduces the possibility of the main control operator discovering other abnormal equipment actions.

[0009] 6. In the daily production process of nuclear power plants, if a large transient event occurs (such as shutdown, reactor shutdown, large power fluctuations, important equipment failure, etc.), the unit may have a large number of alarms in a short period of time. The main control operator needs to specifically sort out each alarm and the equipment action caused by the alarm logic. This process is very complicated and tedious.

[0010] 7. After the alarm of some nuclear power plants is triggered, if the cause of the alarm has been eliminated, the alarm reminder in the DCS system alarm list will change from frequent and fast flashing to slow flashing. After the main control operator accidentally clicks the slow flashing alarm, the alarm will be eliminated from the DCS system alarm list, making it convenient for the main control operator to view existing alarms and new alarms. However, if the main control operator accidentally clicks the alarm in the alarm list that has disappeared and is in a slow flashing state without sorting out the alarms, the logical actions triggered by the alarm will be difficult for the main control operator to discover and sort out.

[0011] 8. When a nuclear power plant experiences transient conditions or accidents, the main control operators must work closely together to perform various operations according to the regulations. Since the operations at this time are complex operations that are rarely performed in daily work, the main control operators need to bear great psychological pressure, and the probability of human errors will increase, resulting in various risks of nuclear power units, especially nuclear safety risks. Once a person makes an erroneous operation, it is difficult to detect. At this time, a large amount of additional manpower is required to find and analyze the equipment that has been misoperated, and take additional measures to remedy the errors, which further affects the normal control of the unit and accident handling. Summary of the invention

[0012] The purpose of the present invention is to overcome the defects of the prior art and provide a method and system for monitoring the operation of switch quantity equipment in a nuclear power plant, so that the main control operator of the nuclear power plant can grasp the operation status of all equipment of the nuclear power units under his jurisdiction in real time and efficiently.

[0013] In order to achieve the above object, the present invention provides the following technical solutions:

[0014] In one aspect, the present invention provides a method for monitoring the operation of a switching device in a nuclear power plant, comprising the following steps:

[0015] Step 1: Get the set start and end time;

[0016] Step 2: Get the name of the device that has been set;

[0017] Step 3: Obtain all historical data of all device points in the corresponding time period of step 1;

[0018] Step 4: Compare the action changes of all devices in the time period in step 1, and record the number of changes and the specific time of the changes;

[0019] Step 5: If the temporary variable is empty, directly assign the traversed data to the temporary variable; if the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value;

[0020] Step 6: If the value of the temporary variable is the same as the variable value, traverse the next value; if the values ​​are different, determine that the data has changed, input the change into the result of the data comparison module, assign the current data to the temporary variable, and traverse the next data;

[0021] Step 7: If all data remain unchanged, no data will be entered into the result list;

[0022] Step 8: After processing all points according to the above steps, the data comparison module obtains all the results and returns them to the front end for display.

[0023] In some embodiments, the device names include large equipment, switch type equipment, and alarm module.

[0024] In some embodiments, large equipment includes various pumps, fans, motors, refrigerators, electric heaters, and valve limiters.

[0025] In some embodiments, the switch type device includes an on-off thermometer, an on-off liquid level gauge, an on-off pressure gauge, and an on-off tachometer.

[0026] In some embodiments, the alarm module sends out an alarm signal and an indication signal, and the alarm signal and the indication signal include process quantities and output quantities of logical operations in the system control process.

[0027] In some embodiments, a temporary variable is used to store the data of the latest point.

[0028] In some embodiments, the above-mentioned method for monitoring the operation of switching devices in a nuclear power plant further includes the following steps:

[0029] Step 9: Get the start time and end time of the software front end;

[0030] Step 10: Get the device type selected by the software front end, and determine the device name according to the type;

[0031] Step 11: Obtain all historical data of the device point in step 10 for the time period corresponding to step 9;

[0032] Step 12: Compare the action changes of the selected device within the time period in step 9, and record the number of changes and the specific time of the changes;

[0033] Step 13: If the temporary variable is empty, directly assign the traversed data to the temporary variable; if the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value;

[0034] Step 14: If the value of the temporary variable is the same as the variable value, traverse the next value; if the values ​​are different, it is determined that the data has changed, the change is input into the result of the data comparison module, and the current value is assigned to the temporary variable, and the next data is traversed;

[0035] Step 15: If all data remain unchanged, no data will be entered into the result list;

[0036] Step 16: After all points are processed as above, the data comparison module obtains all the results and returns them to the front-end for display.

[0037] On the other hand, the present invention also provides a nuclear power plant switch quantity equipment action monitoring system, comprising:

[0038] The automatic display module is used to obtain the set start and end time, the set device name, and all historical data of all device points in the corresponding time period. It automatically searches and counts all device actions in the past 8 hours every hour and displays the action status in a list form.

[0039] The query display module is used to manually query the operation status of the specified time period and the specified device, and display the query results in a list form;

[0040] The data comparison module is used to calculate the action status of all devices or specified devices within the specified time, and transmit the calculation results to the automatic display module and the query display module; it is used to compare the action changes of all devices within the time period, record the number of changes and the specific time of the changes, and determine whether the temporary variable is empty;

[0041] The drawing association module is used to automatically match and obtain the logical drawings and second-layer screen drawings in the configuration database, and transmit the results to the automatic display module and the query display module.

[0042] On the other hand, the present invention also provides a computer device, including a memory and a processor, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the steps of the above-mentioned method for monitoring the operation of switching equipment in a nuclear power plant are implemented.

[0043] On the other hand, the present invention also provides a computer-readable storage medium, on which computer-readable instructions are stored, and when the computer-readable instructions are executed, the steps of the above-mentioned method for monitoring the operation of switching equipment in a nuclear power plant are implemented.

[0044] Compared with the prior art, the method and system for monitoring the operation of switching devices in nuclear power plants provided by the present invention have the following beneficial effects:

[0045] The present invention enables the main control operator to grasp the operation status of all equipment of the nuclear power unit under his / her jurisdiction in real time and efficiently.

[0046] The present invention can provide the main control operator with post-operation checking and correction, and is used to identify the correctness of various operations of the main control operator under complex working conditions such as overhaul, transient state, and accident. The present invention can assist the operator in sorting out the equipment that has been in action during the transient process, so that the main control operator can take targeted response measures. When the main control operator independently performs a large number of continuous operations, it is easy to operate the wrong equipment due to mistakes. The present invention can be used by other personnel to verify whether the operation of the main control operator is correct, and can provide a means to quickly verify the wrong object when an erroneous operation occurs.

[0047] Furthermore, the present invention summarizes the action status of the same device and displays it, reducing the number of rows of data in the display list, making it easier for the main control operator to quickly identify abnormal device actions. At the same time, the detailed action status of multiple points corresponding to the same device (including specific point name, specific action time, and specific action status) can be viewed through links.

[0048] Furthermore, when the present invention counts equipment actions, it can exclude certain unimportant statistical data of systems with a large number of equipment actions according to the actual situation of nuclear power plant operation, so as to facilitate verification and analysis by the main control operator. At the same time, it automatically associates the configuration information corresponding to each device, reducing the query time of the main control operator. At the same time, the present invention can assist the operator to quickly verify whether the alarm is caused by equipment action, thereby speeding up the process of locating the specific cause of the alarm.

[0049] Furthermore, through the active query method of the present invention, the main control operator can input the start and end time of the query and the type of equipment to be queried according to actual needs, thereby realizing a customized equipment action status query function.

[0050] Furthermore, through the automatic cyclic query method of the present invention, the device actions of all switching devices in the past 8 hours are automatically calculated once every hour, and the query results are displayed in a list in alphabetical order.

[0051] Furthermore, through the automatic cyclic query function of the present invention, the operation status of the switching equipment can be calculated regularly, helping the main control operator to discover unsorted alarms.

[0052] Furthermore, the present invention can uniformly monitor all switch value devices in both the automatic cycle query mode and the active query mode, and count the number of actions within a time interval.

[0053] Furthermore, through the automatic jump method of the drawings of the present invention, the control logic diagram and the second-layer screen corresponding to the device name are automatically jumped according to the device name. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for the technical description.

[0055] Figure 1 A block diagram of the nuclear power plant switch quantity equipment action monitoring system provided by the present invention;

[0056] Figure 2 A flowchart of retrieving historical data of a selected time period of all devices provided by the present invention;

[0057] Figure 3 A flow chart of a method for monitoring the operation of switching devices in a nuclear power plant provided by the present invention;

[0058] Figure 4 The invention provides a method for monitoring the operation of switching equipment in a nuclear power plant, and a flow chart of a query function. DETAILED DESCRIPTION

[0059] The following is further explained in detail through specific implementation methods.

[0060] The present invention obtains the historical data of nuclear power plant equipment operation through the existing data acquisition system (PI database for short), performs secondary statistical summary analysis on the data, and then displays the specific action times, action times, and action trends of target equipment within the target time period according to the specific needs of the main control operator, and provides internal logic screen links and DCS system screen display position links.

[0061] On the one hand, if Figure 1 As shown, the present invention provides a nuclear power plant switch quantity equipment action monitoring system, including an automatic display module, a query display module, a data comparison module, and a drawing association module.

[0062] The automatic display module is used to automatically search and count all equipment actions in the past 8 hours every hour, and display the action status in a list form, including the number of equipment actions, specific action time, action trend curve, and internal logic screen links of equipment actions; it is also used to obtain the set start and end time, the set equipment name, and all historical data of all equipment points in the corresponding time period.

[0063] The query display module is used to manually query the action status of the specified time period and the specified equipment, and display the query results in a list form, including the number of equipment actions, specific action time, action trend curve, and internal logic screen links of equipment actions.

[0064] The data comparison module is used to compare the action changes of all devices within the time period, record the number of changes and the specific time of the changes; if the temporary variable is empty, directly assign the traversed data to the temporary variable; if the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value; if the value of the temporary variable is the same as the variable value, traverse the next value; if the values ​​are different, determine that the data has changed, input the change into the result of the data comparison module, assign the current value to the temporary variable, and traverse the next data. The data comparison module communicates with the PI database, obtains the historical status and timestamp of all devices according to the built-in time period and device name of the program, and finally obtains the number of device actions, specific action time, and action trend curve through judgment and calculation, and passes the results to the automatic display module.

[0065] The data comparison module is connected to the PI database for communication. Based on the start time, end time, and device type entered by the user in the interface, it obtains the historical status and corresponding timestamp of the selected device from the PI database. After judgment and calculation, it finally obtains the number of device actions, specific action time, and action trend curve, and passes the results to the query display module.

[0066] The drawing association module communicates with the existing configuration database, automatically matches the logic drawings and second-layer screens in the existing configuration database according to the device name, and forms a jump connection to directly view the control logic drawings and second-layer screens corresponding to the device. The results are transmitted to the automatic display function module and the query display function module.

[0067] It should be noted that the PI database collection management platform is an existing platform, which is developed based on a modular approach. It receives UDP data packets sent to the third safety zone by the Siemens OM690 platform XU server through a one-way network isolation device, parses the data packets and writes them into the real-time historical database. The nuclear power plant switch quantity equipment action monitoring system installs the PI database SDK environment, cooperates with the debugging network and system environment, and configures the PI database access rights, so as to obtain the real-time and historical data of the unit operation in the PI database.

[0068] In the PI database, the single unit PI database is configured with more than 34,587 points. The point types are divided into four types: M, B, E, and R. The equipment action analysis mainly involves two types, B and E. There are a total of 30,000 points in the two types of B and E. The attributes of the points are shown in the following table:

[0069] Roll Call describe type Minimum Maximum unit 0GEW004MF_XQ01 500kV BUS IV FREQ M 45 55 Hz 0GEW003JE_XG01 0GEW003 EARTH SWITCH B / / / 0GEW003JE_XG02 0GEW003 EARTH SWITCH B / / / 0GEW512KA_XP41 530JA SF6 LP AA E Y / / 0GEW514KA_XP41 530JA OIL LP TRIP AA E Y / / 5CAM002VE_XP10 LWR CONTNT TAVG R 0.00000 200.00000 ℃ 5CAM003VE_XP10 LWR CONTNT TAVG R 0.00000 150.00000 ℃

[0070] There is no equipment category in the PI database, and the equipment type can only be determined based on the equipment nine-digit code. If the equipment nine-digit code contains the following characters, it is considered that the equipment needs to be compared, so as to select the point names that need to be compared.

[0071] By combing the rules, quickly locate the points that need to be calculated and processed in the equipment category:

[0072] (1) Equipment (including valves, motors, pumps, fans, circuit breakers, heaters, cabinets, etc.)

[0073] The type is B or E, and the roll name includes JS, JE, JA, ZV, EL, CI, PO, XK, DL, TR, XR, RS, XK, VAF, VP, VB, VAI, VD, VL, VPA, VPB, VZ, VV, VAN, VH, VN, VE, VR, DS, XI, ELA, ELB, EL1, EL2, CO, CO1, MO, GF, VVS, VVA, VVB, VAR, VA, CM1, AR, AR, AR1, AR2, ARY, JAA, JAB, VC, VC1, RK1, XT, TB, TB1, TB2, TBY, SJ, TSTD, SM, SM1, SM2, SM1X, SM2X, CC, CV, TL, and XU.

[0074] (2) Alarm indication

[0075] The type is B or E, and the name contains fields such as KA and KS.

[0076] (3) Switch equipment (including flow switches, pressure switches, temperature switches, liquid level switches, etc.)

[0077] The type is B or E, and the roll name includes fields such as ST, ST1, ST2, STY, STX, STY, SD, SP1, SP2, SPD, SPY, SPV, SD, SDY, SN, SN1, SNX, SX, SY, SV1, and SV2.

[0078] After completing the equipment point analysis, retrieve the historical data of all equipment in the selected time period from the unit PI database. The following steps are part of this method. The retrieval and analysis implementation process is as follows: Figure 2 As shown:

[0079] S1: Call PI data reading program;

[0080] S2: connect to PI database via IP address;

[0081] S3: Identify the data type. Execute S4 for real-time data, step 6 for short-term historical data, and step S8 for long-term historical data.

[0082] S4: If it is real-time data, send the point number and query time to the data cache service module;

[0083] S5: If the data is read successfully, the point number and return time are returned. Otherwise, read again and add 1 to the counter. When the counter is equal to 10 and still not read successfully, the reading is terminated.

[0084] S6: If it is short-term historical data, send the point number and query start and end time to the data cache service module;

[0085] S7: If the data is read successfully, the point number and query start and end time are returned. Otherwise, read again and add 1 to the counter. When the counter is equal to 10 and still not obtained successfully, the reading is terminated.

[0086] S8: If it is long-term historical data, send the point number and query start and end time to the real-time historical database;

[0087] S9: If the data is read successfully, the point number and query start and end time are returned. Otherwise, read again and add 1 to the counter. When the counter is equal to 10 and still not obtained successfully, the reading is terminated.

[0088] S10: The data reading process ends.

[0089] On the other hand, Figure 3As shown, the present invention provides a method for periodically and automatically monitoring the operation of switching devices in a nuclear power plant, comprising the following steps:

[0090] Step 1: Use the automatic display module to obtain the start and end times set in the program background. For example, obtain the data for the past 8 hours every 1 hour.

[0091] Step 2: Get the device name set in the program background through the automatic display module.

[0092] The equipment name includes codes for large equipment, switch-type equipment, alarm modules, etc. The equipment name codes are detailed in the equipment-related points above. Large equipment includes various pumps, fans, motors, refrigerators, electric heaters, and valve limiters. Switch-type equipment includes on-off thermometers, on-off liquid level gauges, on-off pressure gauges, and on-off tachometers. The alarm module sends out alarm signals and indication signals, which include process quantities and output quantities of logical operations in the system control process.

[0093] Step 3: Call the PI data reading program through the automatic display module to obtain all historical data of all equipment points in the corresponding time period of step 1.

[0094] Step 4: Compare the action changes of all devices in the time period in step 1 through the data comparison module, and record the number of changes and the specific time of the changes.

[0095] The step of calculating the change in device action includes using a temporary variable to store the data of the latest point.

[0096] Step 5: If the temporary variable is empty, directly assign the traversed data to the temporary variable; if the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value.

[0097] Step 6: If the value of the temporary variable is the same as the variable value, traverse the next value; if the value of the temporary variable is different from the variable value, determine that the data has changed, input the change into the result of the data comparison module, assign the current value to the temporary variable, and traverse the next data.

[0098] Step 7: If all data remain unchanged, no data will be entered into the result list.

[0099] Step 8: After processing all the points according to the above steps, the data comparison module obtains all the results and returns to the front-end display of the automatic display module.

[0100] In some embodiments, Figure 4 As shown, the method for monitoring the operation of switching equipment in a nuclear power plant of the present invention further includes:

[0101] Step 9: Obtain the start time and end time manually entered by the user in the software interface through the query display module.

[0102] Step 10: Obtain the device type manually entered and selected by the user in the software interface through the query display module, and determine the device name based on the type.

[0103] Step 11: Call the PI data reading program through the query display module to obtain all historical data of the equipment point in step 10 in the corresponding time period according to step 9.

[0104] Step 12: Compare the action changes of the selected device within the time period in step 9 through the data comparison module, and record the number of changes and the specific time of the changes.

[0105] The specific steps include using a temporary variable to store the data of the latest point.

[0106] Step 13: If the temporary variable is empty, directly assign the traversed data to the temporary variable; if the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value.

[0107] Step 14: If the value of the temporary variable is the same as the variable value, traverse the next value; if the value of the temporary variable is different from the variable value, determine that the data has changed, input the change into the result of the data comparison module, assign the current value to the temporary variable, and traverse the next data.

[0108] Step 15: If all data remain unchanged, no data will be entered into the result list.

[0109] Step 16: After all the points are processed as above, the data comparison module obtains all the results and returns them to the front-end display of the query display module.

[0110] The present invention divides action monitoring into an active query function screen (i.e., a query display function) and a cyclic display function screen (i.e., an automatic display function) in response to the user's usage requirements under different working conditions. In the query function screen, the user needs to select the equipment category to be queried and the query time range according to actual needs. Among them, the equipment categories are divided into equipment (such as various pumps, fans, motors, refrigerators, electric heaters, valve limiters, etc.), switch-type equipment (such as on-off thermometers, on-off liquid level gauges, on-off pressure gauges, on-off tachometers, etc.), and alarm modules (sending alarm signals, indication signals, etc.). The more equipment categories selected, the longer the search time range, the larger the amount of data to be searched and counted, and the longer the calculation time required for the server to complete a search. The query screen function achieves a balance between server computing resources and actual query needs.

[0111] Due to the large amount of data being queried, in order to improve the user experience, shorten the query time, and also to avoid each user querying the device action status in a similar time period and increasing the server load, the designer designed an automatic loop display function screen. The automatic loop display function is set to automatically calculate the device action list of all switch devices in the past 8 hours once every hour, and display the query results in a list in alphabetical order. The information of each device that has taken action is summarized in one row of the list. The information content of each row of the list is the abbreviation code of the action device, the number of times the device has taken action within 8 hours, the shortcut key for querying the specific action time of the device, the shortcut key for querying the action trend of the device, and the shortcut key for querying the internal logic screen link of the device action.

[0112] In the actual production process of nuclear power plants, the action of a single device will cause multiple equipment points to act. Take a pump with the abbreviation code 6CSP003PO as an example, where the number 6 represents the unit number, CSP represents the system number, PO is the abbreviation of the pump equipment type, and 003 is the digital identification code. In the DCS system, the start status of this pump is referred to by the point 6CSP003PO_XG01, and the shutdown status of this pump is referred to by the point 6CSP003PO_XG02. When the pump 6CSP003PO is started, the point 6CSP003PO_XG01 representing the start of the pump will change from logic 0 to logic 1, and the point 6CSP003PO_XG02 representing the shutdown of the pump will change from logic 1 to logic 0. When the pump 6CSP003PO stops, the point 6CSP003PO_XG01 representing the pump start will change from logic 1 to logic 0, and the point 6CSP003PO_XG02 representing the pump stop will change from logic 0 to logic 1. In this process, 6CSP003PO_XG01 and 6CSP003PO_XG02 acted twice respectively. In actual work, the operator is concerned about the start of the pump (6CSP003PO). Therefore, when counting the number of equipment actions, the number of actions of 6CSP003PO_XG01 and 6CSP003PO_XG02 is added and noted in the corresponding row of 6CSP003PO in the display list, which is used to represent the total number of switch quantity actions related to 6CSP003PO. Such data processing can reduce the number of rows of data in the display list, making it easier for operators to quickly identify abnormal equipment actions.

[0113] When counting equipment actions, the statistical data of some unimportant systems with a large number of equipment actions can be eliminated according to the actual operation of the nuclear power plant, so as to facilitate the verification and analysis by the operator. For example, during the daily fire test of a nuclear power plant, a large amount of invalid equipment action information will be generated when the fire host is reset. In this case, the equipment action information of the fire system can be eliminated so that the operator can quickly analyze the equipment actions of other systems.

[0114] The main control operator gives the normal action frequency range of each device according to the system operation characteristics of each system in the nuclear power plant. When the actual action frequency of the device is not within the given equipment action frequency range, an alarm is actively sent to the main control operator to remind the main control operator of possible abnormalities, so as to find people through fault information and improve the information and intelligent level of the entire system.

[0115] Therefore, the present invention can realize the rapid viewing of the operation status of all equipment in the unit through a unified screen, reducing the inspection burden of the operator. The main control operator can find possible abnormalities of the unit based on the statistics of the number of equipment actions, and compare other data horizontally and vertically. For example, the abnormal multiple starts of the drain pump may indicate that there is leakage in the system or unexpected increase of condensate. In the case of comprehensive alarm, "equipment action monitoring" can assist the operator to quickly verify whether the alarm is caused by the equipment action, thereby speeding up the process of locating the specific cause of the alarm. When a certain equipment failure of the unit or a DCS system card failure causes a large number of alarms to appear instantly, the present invention can help the operator verify whether there are other abnormal equipment actions. Under the transient working conditions of the nuclear power plant, the present invention can assist the operator to sort out the equipment that has been in action during the transient process, so that the operator can take targeted response measures. When the operator performs a large number of continuous operations independently, it is easy to operate the wrong equipment due to mistakes. The present invention can be used for other personnel to verify whether the operator's operation is correct, and can provide a means to quickly verify the wrong object when an erroneous operation occurs.

[0116] The present invention can query the change of all switch quantities (including pumps, fans, motors, valve limits, on-off instruments, alarms, indications, equipment status, etc.) of the unit in any selected time period of the nuclear power plant, and synchronously display the number of actions, action time and action trend of the equipment that has taken action in the time period, and provide a link to view the internal logic involved in the action equipment. In addition, it also periodically scans and counts the number of actions, action time and action trend of all switch quantities on the unit in the past 8 hours every hour, and fully displays the results of automatic statistics through a dedicated screen.

[0117] The present invention can provide operators with a tool for comprehensively, efficiently and specifically checking the operation of equipment when the unit generates a comprehensive alarm or a transient state. It can also provide nuclear power plant operators with a tool for leak detection and error correction after operation, which is used to identify the correctness of various operations of operators under complex working conditions such as overhaul, transient state, and accidents, improve the work efficiency of operators, reduce the burden on operators, and enhance the safety of nuclear power units.

[0118] During the daily operation of a nuclear power plant, the present invention can be used to periodically check the operation status of equipment, and automatically infer the operating status of specific equipment based on the typical value of the number of times the equipment is started. When the number of actions is too many or there is no action when there should be, a reminder can be given to the operator to guide the operator to find possible defects, find the person responsible for the problem, reduce the operator's personnel burden and improve work efficiency.

[0119] After the alarm in the main control room of a nuclear power plant is triggered, if it is a comprehensive alarm or multiple alarms are triggered simultaneously, the operator can use the present invention to specifically search for the switch quantity instrument that reaches the alarm setting value or action setting value before the alarm is triggered, and quickly determine the cause of the alarm triggering.

[0120] After the alarm is triggered, the operator can use the present invention to quickly sort out the specific equipment that produces the action and the action time, action trend, and action number, and can directly view the logical settings inside the specific equipment action through the link, greatly improving the operator's efficiency in analyzing the cause of the alarm and implementing the alarm response.

[0121] When a large number of alarms occur in the main control room in a short period of time, or a large number of devices become unavailable due to card failure in the distributed control system, or a large number of switch quantities / alarms are repeatedly triggered due to equipment failure, the present invention can assist the operator in discovering other abnormal alarms and equipment actions that may exist in the recurring alarm list (or switch quantity action list).

[0122] In daily work, transient response, accident response and other working conditions, if the operator makes an error operation or operates an additional device that should not be operated, the present invention can quickly identify the error operation, and then quickly take corrective measures to avoid further development of the error. Through the design of the present invention, all operations of the nuclear power plant operator can be monitored in real time, and even if the operator makes an error operation, it can be quickly identified and corrected, thereby avoiding the expansion of the problem.

[0123] When analyzing historical events, the present invention can comprehensively and intuitively display the action status and action times of all equipment at the time of the event, providing a powerful event analysis tool for operators.

[0124] The present invention has strong versatility and replicability, and has practical production application value for different nuclear power units and reactor types. It can be used to reduce the burden on nuclear power plant operators and improve the operators' ability to control the unit status and their analysis capabilities.

[0125] In addition, the present invention also provides a computer device, including a memory and a processor, wherein the memory stores computer-readable instructions, and when the processor executes the computer-readable instructions, the steps of the above-mentioned method for monitoring the operation of switching equipment in a nuclear power plant are implemented.

[0126] In addition, the present invention also provides a computer-readable storage medium, on which computer-readable instructions are stored, and when the computer-readable instructions are executed, the steps of the above-mentioned nuclear power plant switch quantity equipment action monitoring method are implemented.

[0127] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device.

[0128] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A method for monitoring the operation of switching equipment in a nuclear power plant, characterized in that: The following steps are involved: Step 1: Get the set start and end time through the automatic display module; Step 2: Get the set device name through the automatic display module; Step 3: Obtain all historical data of all device points in the corresponding time period of step 1; Step 4: Compare the action changes of all devices in the time period in step 1, record the number of changes and the specific time of the changes, and use a temporary variable to store the data of the latest point; Step 5: If the temporary variable is empty, directly assign the traversed data to the temporary variable; If the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value; Step 6: If the value of the temporary variable is the same as the variable value, traverse the next value; if the values ​​are different, determine that the data has changed, input the change into the result of the data comparison module, assign the current value to the temporary variable, and traverse the next data; Step 7: If all data remain unchanged, no data will be entered into the result list; Step 8: After processing all the points according to the above steps, the data comparison module obtains all the results and returns to the front-end display of the automatic display module.

2. The method for monitoring the operation of switching equipment in a nuclear power plant according to claim 1, characterized in that: In step 2, the device names include large equipment, switch type equipment, and alarm module.

3. The method for monitoring the operation of switching equipment in a nuclear power plant according to claim 2, characterized in that: Large equipment includes various pumps, fans, motors, refrigerators, electric heaters, and valve limiters.

4. The method for monitoring the operation of switching equipment in a nuclear power plant according to claim 2, characterized in that: Switch type devices include on-off thermometers, on-off liquid level gauges, on-off pressure gauges, and on-off tachometers.

5. The method for monitoring the operation of switching equipment in a nuclear power plant according to claim 2, characterized in that: The alarm module sends out alarm signals and indication signals, which include process quantities and output quantities of logical operations in the system control process.

6. The method for monitoring the operation of switching equipment in a nuclear power plant according to claim 1, characterized in that: The following steps are also included: Step 9: Obtain the start time and end time of the software front end by querying the display module; Step 10: Obtain the device type selected by the software front end through the query display module, and determine the device name according to the type; Step 11: Obtain all historical data of the device point in step 10 for the time period corresponding to step 9; Step 12: Compare the action changes of the selected device within the time period in step 9, and record the number of changes and the specific time of the changes; Step 13: If the temporary variable is empty, directly assign the traversed data to the temporary variable; If the temporary variable is not empty, determine whether the value of the temporary variable is the same as the variable value; Step 14: If the value of the temporary variable is the same as the variable value, traverse the next value; if the values ​​are different, determine that the data has changed, input the change into the result of the data comparison module, assign the current value to the temporary variable, and traverse the next data; Step 15: If all data remain unchanged, no data will be entered into the result list; Step 16: After all the points are processed as above, the data comparison module obtains all the results and returns them to the front-end display of the query display module.

7. A nuclear power plant switch quantity equipment operation monitoring system, based on the nuclear power plant switch quantity equipment operation monitoring method according to claim 6, characterized in that: The system includes: The automatic display module is used to automatically search and count all device actions in the past 8 hours every hour, and display the actions in a list format; The query display module is used to manually query the operation status of the specified time period and the specified device, and display the query results in a list form; The data comparison module is used to calculate the action status of all devices or specified devices within the specified time, and transmit the calculation results to the automatic display module and the query display module; the data comparison module communicates with the PI database, obtains the historical status and timestamp of all devices according to the time period and device name built into the program, and finally obtains the number of device actions, specific action time, and action trend curve through judgment and calculation, and transmits the results to the automatic display module; The drawing association module is used to automatically match and obtain the logical drawings and second-layer screen drawings in the configuration database, and transmit the results to the automatic display module and the query display module.

8. A computer device comprising a memory and a processor, wherein the memory stores computer-readable instructions, characterized in that: When the processor executes the computer-readable instructions, the steps of the method for monitoring the operation of switching equipment in a nuclear power plant as described in any one of claims 1-6 are implemented.

9. A computer-readable storage medium having computer-readable instructions stored thereon, characterized in that: When the computer-readable instructions are executed, the steps of the method for monitoring the operation of switching equipment in a nuclear power plant as described in any one of claims 1 to 6 are implemented.

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