Multi-loop reactor system operation method, device, equipment and medium

Abstract

The invention relates to the technical field of new energy. The invention discloses a multi-loop reactor system operation method, device and equipment and a medium, and the method comprises the steps: obtaining a plurality of measurement signals of a main pump, preprocessing each measurement signal, and obtaining a main pump characteristic value corresponding to each measurement signal; according to the main pump characteristic value corresponding to each measurement signal, the main pump health degree is calculated based on a preset main pump health degree calculation rule and the main pump characteristic reference value corresponding to each measurement signal; judging the running state of the main pump according to the health degree of the main pump; and determining the system operation mode according to the mapping relation between the operation state of the main pump and the system operation mode. The health degree of the main pump is obtained through calculation of the multiple measurement signals of the main pump, the operation state of the main pump is judged according to the health degree of the main pump, the system operation mode is further determined according to the operation state of the main pump, it is guaranteed that operation of the unit is matched with the state of the main pump, and economical efficiency and safety of operation of the unit are achieved.

Description

Technical Field

[0001] The present application relates to the field of new energy technology, and in particular to a method, device, equipment and medium for operating a multi-loop reactor system. Background Art

[0002] In a nuclear power plant, a unit is equipped with multiple loops, each of which is equipped with a main pump, which is mainly used to transport reactor coolant to circulate between the reactor pressure vessel and the steam generator. When the reactor is operating normally, the main pump transports enough coolant to the reactor through forced circulation to ensure timely removal of core heat. During long-term operation, the main pump may fail due to excessive vibration, mechanical looseness, shaft cracks, bearing cavitation and other faults, causing the reactor to shut down, affecting the economic efficiency of nuclear power plant operation and even affecting its safety.

[0003] Therefore, how to achieve the economy and safety of unit operation according to the operating status of the main pump has always been a difficult problem in the industry. Summary of the invention

[0004] In view of the above situation, the embodiments of the present application provide a multi-loop reactor system operation method, device, equipment and medium, which aim to solve the above problems or at least partially solve the above problems.

[0005] In a first aspect, a method for operating a multi-loop reactor system is provided, comprising:

[0006] Acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal;

[0007] Calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals;

[0008] Determining the operating state of the main pump according to the health of the main pump;

[0009] The system operation mode is determined according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0010] Preferably, the acquiring of multiple measurement signals of the main pump, preprocessing each of the measurement signals, and obtaining a main pump characteristic value corresponding to each of the measurement signals includes:

[0011] Obtain various measurement signals of the main pump;

[0012] Performing filtering processing on the various measurement signals of the main pump respectively;

[0013] The multiple measurement signals of the main pump after filtering are respectively analyzed in the time domain and the frequency domain, and the main pump characteristic value corresponding to each measurement signal is calculated and obtained.

[0014] Preferably, the main pump health is calculated according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and a main pump characteristic reference value corresponding to each of the measurement signals, including:

[0015] Calculate the deviation value of each measurement signal according to the main pump characteristic value corresponding to each measurement signal and the main pump characteristic reference value;

[0016] Obtaining an impact factor corresponding to each of the measurement signals;

[0017] Calculating the product of the deviation value of each measurement signal and its corresponding influencing factor to obtain the deviation degree of each measurement signal;

[0018] The sum of the deviations of the plurality of measurement signals is calculated to obtain the health status of the main pump.

[0019] Preferably, judging the operating state of the main pump according to the health of the main pump includes:

[0020] Comparing the health of the main pump with a plurality of health ranges to determine a health range corresponding to the health of the main pump;

[0021] Based on a mapping relationship between a plurality of health ranges and the operating state of the main pump, the operating state of the main pump is determined according to the health range corresponding to the health of the main pump.

[0022] Preferably, determining the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode includes:

[0023] When the operating state of the main pump is the first operating state, determining the system operating mode to be the first operating mode;

[0024] When the operating state of the main pump is the second operating state, determining the system operating mode to be the second operating mode or the third operating mode;

[0025] When the operating state of the main pump is the third operating state, the system operating mode is determined to be the third operating mode or the fourth operating mode.

[0026] Preferably, when the operating state of the main pump is the second operating state or the third operating state, the method further includes:

[0027] Selecting one of the system operation modes corresponding to the operation state of the main pump as the current system operation mode;

[0028] Determine the historical time of the running task based on the running task and historical running data;

[0029] Calculate the estimated time of running tasks according to the current system operation mode;

[0030] When the estimated time of the running task is less than or equal to the historical time of the running task, determining that the system running mode is the current system running mode;

[0031] When the estimated operation task time is greater than the historical operation task time, the system operation mode is determined to be another system operation mode corresponding to the operation state of the main pump.

[0032] Preferably, the method further comprises:

[0033] Obtain multiple sliding windows within the current sampling period, and calculate the health of the main pump corresponding to each sliding window;

[0034] According to the health of the main pump corresponding to each sliding window, the average health of the main pump of multiple sliding windows in the current sampling period is calculated;

[0035] The health range corresponding to the health of the main pump corresponding to each sliding window in the current sampling period and the health range corresponding to the average health of the main pump of multiple sliding windows are compared with the health range corresponding to the average health of the main pump in the previous period to determine whether there is a transient change in the operating status of the main pump.

[0036] In a second aspect, a multi-loop reactor system operating device is provided, comprising:

[0037] An acquisition module, used for acquiring multiple measurement signals of the main pump, preprocessing each of the measurement signals, and obtaining a main pump characteristic value corresponding to each of the measurement signals;

[0038] A calculation module, used to calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals;

[0039] A judgment module, used for judging the operating state of the main pump according to the health of the main pump;

[0040] The determination module is used to determine the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0041] In a third aspect, a computer device is provided, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the multi-loop reactor system operation method as described in the first aspect when executing the computer program.

[0042] In a fourth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the multi-loop reactor system operation method as described in the first aspect are implemented.

[0043] At least one of the above technical solutions adopted in the embodiments of the present application can achieve the following beneficial effects:

[0044] The present application calculates the health of the main pump through multiple measurement signals of the main pump, determines the operating status of the main pump based on the health of the main pump, and further determines the system operating mode based on the operating status of the main pump to ensure that the operation of the unit matches the status of the main pump and achieve the economy and safety of the unit operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0046] Figure 1 is a schematic diagram of an application environment of a multi-loop reactor system operation method according to an embodiment of the present invention;

[0047] Figure 2 It is a schematic flow chart of a method for operating a multi-loop reactor system in one embodiment of the present invention;

[0048] Figure 3 is a schematic diagram of the principle of a multi-loop reactor system in one embodiment of the present invention;

[0049] Figure 4 It is a specific flow chart of a method for operating a multi-loop reactor system in one embodiment of the present invention;

[0050] Figure 5 It is a structural schematic diagram of a multi-loop reactor system operating device in one embodiment of the present invention;

[0051] Figure 6 is a schematic diagram of a structure of a computer device in one embodiment of the present invention;

[0052] Figure 7 It is another structural schematic diagram of a computer device in one embodiment of the present invention. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such use is interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to".

[0055] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0056] As described above, during long-term operation, the main pump may fail due to excessive vibration, mechanical looseness, shaft cracks, bearing cavitation and other faults, causing reactor shutdown, affecting the economic efficiency of nuclear power plant operation, and even affecting its safety. In order to solve this technical problem, the embodiment of the present application provides a multi-loop reactor system operation method.

[0057] The multi-loop reactor system operation method provided by the embodiment of the present invention can be applied in the following aspects: Figure 1 In an application environment, the device side communicates with the server side through a network. The server side can obtain a variety of measurement signals of the main pump through the device side, pre-process each of the measurement signals, and obtain the main pump characteristic value corresponding to each of the measurement signals; calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on the pre-set main pump health calculation rules and the main pump characteristic reference value corresponding to each of the measurement signals; judge the operating status of the main pump according to the health of the main pump; determine the system operating mode according to the mapping relationship between the operating status of the main pump and the system operating mode. Among them, the device side can be but is not limited to various main pump sensor devices. The server side can be implemented with an independent server or a server cluster composed of multiple servers. The present application obtains the health of the main pump through the calculation of multiple measurement signals of the main pump, and judges the operating status of the main pump according to the health of the main pump, and further determines the system operating mode according to the operating status of the main pump, so as to ensure that the operation of the unit matches the status of the main pump and achieve the economy and safety of the unit operation.

[0058] The present invention is described in detail below through specific embodiments.

[0059] See also Figures 2 to 4 As shown, Figure 2 A schematic flow chart of a multi-loop reactor system operation method provided in an embodiment of the present invention includes the following steps:

[0060] S10: Acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal.

[0061] Specifically, the multiple measurement signals of the main pump include at least one of a main pump motor voltage signal, a current signal, a main pump motor cooling water temperature signal, a main pump vibration signal, and a reactor coolant system loop flow signal.

[0062] Specifically, step S10 includes:

[0063] S11: Acquire multiple measurement signals of the main pump; specifically, acquire multiple measurement signals of the main pump within a preset time period in real time.

[0064] S12: performing filtering processing on the various measurement signals of the main pump respectively;

[0065] S13: performing time domain analysis and frequency domain analysis on the filtered multiple measurement signals of the main pump respectively, and calculating and obtaining the main pump characteristic value corresponding to each measurement signal.

[0066] Specifically, the main pump characteristic value corresponding to the measurement signal of each main pump may be a time domain characteristic value or a frequency domain characteristic value.

[0067] Specifically, when each type of main pump characteristic value corresponds to the measurement signal, it is necessary to perform time domain analysis and frequency domain analysis on each measurement signal, and select the one that best represents the operating status of the main pump from the frequency domain characteristics and time domain characteristics of each measurement signal as the main pump characteristic value.

[0068] Specifically, if the measurement signal itself can already characterize the operating status of the main pump, time domain analysis and frequency domain analysis may not be performed.

[0069] Specifically, in the time domain analysis, the peak value analysis and effective value analysis are performed on the measurement signal of each main pump. In the frequency domain analysis, the power spectrum analysis is performed on the measurement signal of each main pump. Figure 4 shown.

[0070] S20: calculating the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and a main pump characteristic reference value corresponding to each of the measurement signals;

[0071] Specifically, the main pump characteristic reference value corresponding to each measurement signal is the characteristic value of each measurement signal under normal operation of the reactor at full power, and the health level of the reactor under normal operation at full power is set to 1.

[0072] Specifically, step S20 includes:

[0073] S21: Calculate and obtain a deviation value of each measurement signal according to a main pump characteristic value and a main pump characteristic reference value corresponding to each measurement signal;

[0074] S22: Obtaining an impact factor corresponding to each of the measurement signals;

[0075] S23: Calculate the product of the deviation value of each measurement signal and its corresponding influencing factor to obtain the deviation degree of each measurement signal;

[0076] S24: Calculate the sum of the deviations of the plurality of measurement signals to obtain the health status of the main pump.

[0077] Specifically, the main pump health calculation formula is as follows:

[0078]

[0079] in:

[0080] a i : The main pump characteristic value corresponding to each measurement signal;

[0081] a si : The main pump characteristic reference value corresponding to each measurement signal;

[0082] f i : The influence factor of each measurement signal, the influence factor of all measurement signals f i The algebraic sum of is 1;

[0083] H: Main pump health, the value range is [0, 1].

[0084] For example, the measurement signals include the vibration signal of the main pump, the motor current signal of the main pump, the speed signal of the main pump, the bearing temperature signal of the main pump, and the stator winding temperature signal of the main pump. After filtering, time domain analysis and frequency domain analysis are performed to obtain the vibration characteristic values ​​of the main pump, the motor current characteristic values ​​of the main pump, the speed characteristic values ​​of the main pump, the bearing temperature characteristic values ​​of the main pump, and the stator winding temperature characteristic values ​​of the main pump.

[0085] Calculate the vibration deviation between the vibration characteristic value of the main pump and the vibration characteristic reference value of the main pump, and calculate the product of the vibration deviation value and the influencing factor corresponding to the vibration signal of the main pump to obtain the vibration deviation degree; calculate the current deviation between the motor current characteristic value of the main pump and the motor current characteristic reference value of the main pump, and calculate the product of the current deviation value and the influencing factor corresponding to the motor current signal of the main pump to obtain the current deviation degree; calculate the speed deviation between the speed characteristic value of the main pump and the speed characteristic reference value of the main pump, and calculate the speed deviation value and the speed deviation of the main pump. The product of the influence factors corresponding to the signal is used to obtain the speed deviation; the bearing temperature deviation value between the main pump bearing temperature characteristic value and the main pump bearing temperature characteristic reference value, and the product of the bearing temperature deviation value and the influence factor corresponding to the main pump bearing temperature signal is obtained to obtain the bearing temperature deviation; the winding temperature deviation value between the main pump stator winding temperature characteristic value and the main pump stator winding temperature characteristic reference value, and the product of the winding temperature deviation value and the influence factor corresponding to the main pump stator winding temperature signal is obtained to obtain the winding temperature deviation. The health of the main pump is equal to the sum of the vibration deviation, current deviation, speed deviation, bearing temperature deviation and winding temperature deviation.

[0086] The sum of the influence factors corresponding to the vibration signal of the main pump, the influence factors corresponding to the motor current signal of the main pump, the influence factors corresponding to the speed signal of the main pump, the influence factors corresponding to the stator winding temperature signal of the main pump, and the influence factors corresponding to the stator winding temperature signal of the main pump is 1.

[0087] The measurement signals in the above examples are only for illustrative purposes and do not specifically limit the measurement signals. The measurement signals can be determined according to actual needs.

[0088] S30: judging the operating state of the main pump according to the health of the main pump;

[0089] Specifically, the operating state of the main pump includes a normal operating state, a first operating state, a second operating state, and a third operating state.

[0090] Specifically, step S30 includes:

[0091] S31: comparing the health of the main pump with a plurality of health ranges to determine a health range corresponding to the health of the main pump;

[0092] Specifically, the health of the main pump is a value in [0, 1], and multiple health ranges fully cover [0, 1]. For example, the multiple health ranges include four sections (0, 0.8], (0.8, 0.9], (0.9, 0.95], and (0.95, 1], and each section is a health range.

[0093] S32: Based on a mapping relationship between a plurality of health ranges and the operating state of the main pump, the operating state of the main pump is determined according to the health range corresponding to the health of the main pump.

[0094] Specifically, the operating states of the main pump include normal operating state, first operating state, second operating state, and third operating state. (0, 0.8] corresponds to the third operating state, (0.8, 0.9] corresponds to the second operating state, (0.9, 0.95] corresponds to the first operating state, and (0.95, 1] ​​corresponds to the normal operating state. In actual operation, the first operating state, the second operating state, and the third operating state are related to the degree of failure of the main pump. For example, the normal operating state is "normal", the first operating state is "mild failure", the second operating state is "moderate failure", and the third operating state is "severe failure". For a reactor system with multiple loops, the main pump health status is determined according to the operating state. The health of the main pump is divided into different sections, such as (0, 0.8], (0.8, 0.9], (0.9, 0.95] and (0.95, 1]. When the health of the main pump is at (0, 0.8], the main pump operation status is identified as "severe fault"; when the health of the main pump is at (0.8, 0.9], the main pump operation status is identified as "moderate fault"; the main pump operation status is identified as "severe fault"; when the health of the main pump is at (0.9, 0.95], the main pump operation status is identified as "mild fault"; when the health of the main pump is at (0.95, 1], the main pump operation status is identified as "normal". That is, the lower the health of the main pump, the more serious the fault state of the main pump.

[0095] S40: Determine the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0096] Specifically, the operating state of the main pump reflects the health of the main pump, and different main pump health states require switching to different system operating modes. There are multiple operating states of the main pump and multiple system operating modes. The operating state of the main pump and the system operating mode can be a one-to-one mapping relationship or a one-to-many mapping relationship.

[0097] Specifically, the step S40 determines the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode, including:

[0098] S41: when the operating state of the main pump is the first operating state, determining that the system operating mode is the first operating mode;

[0099] When the operating state of the main pump is the second operating state, determining the system operating mode to be the second operating mode or the third operating mode;

[0100] When the operating state of the main pump is the third operating state, the system operating mode is determined to be the third operating mode or the fourth operating mode.

[0101] Specifically, when the operating state of the main pump is the first operating state, the multi-loop reactor system automatically switches to the first operating mode. When the operating state of the main pump is the second operating state, the multi-loop reactor system automatically switches to the second operating mode or the third operating mode, which requires further judgment, or the server pushes a warning message to the user that the system needs to switch to the second operating mode or the third operating mode, and the user manually switches to the second operating mode or the third operating mode as needed. When the operating state of the main pump is the third operating state, the multi-loop reactor system switches to the third operating mode or the fourth operating mode, which requires further judgment, or the server pushes a warning message to the user that the system needs to switch to the third operating mode or the fourth operating mode, and the user manually switches to the third operating mode or the fourth operating mode as needed.

[0102] Specifically, when the health of the main pump is less than or equal to a preset value or the rate of decrease of the health of the main pump is less than or equal to a preset rate, the multi-loop reactor system directly operates in the fourth operation mode. For example, the preset value is 0.6 or the preset rate is 0.1 / h, and when the health of the main pump is less than or equal to 0.6 or the rate of decrease of the health of the main pump is less than or equal to 0.1 / h, the reactor shutdown plan is selected.

[0103] Specifically, when the operating state of the main pump is the second operating state or the third operating state, the method further includes generating warning information, wherein the warning information includes the operating state of the main pump and a recommended system operating mode to be switched. For example, when the operating state of the main pump is the second operating state, the recommended system operating mode to be switched is the second operating mode or the third operating mode; when the operating state of the main pump is the third operating state, the recommended system operating mode to be switched is the third operating mode or the fourth operating mode.

[0104] Specifically, after the user selects a system operation mode according to the early warning information, the method further includes: generating prompt information for confirming the switching of the system operation mode. For example, when the operation state of the main pump is the second operation state, after the user selects the system operation mode as the second operation mode, the server sends a prompt information of "confirming the switch to the second operation mode" to the user, and after the user confirms again, the server controls the multi-loop reactor system to operate in the second operation mode.

[0105] When the operating state of the main pump is the second operating state or the third operating state, the multi-loop reactor system automatically switches the system operating mode, such as Figure 4 As shown, the method further includes:

[0106] S42: Select one of the system operating modes corresponding to the operating state of the main pump as the current system operating mode; for example, when the operating state of the main pump is the second operating state, the system operating mode that is automatically selected to switch is the second operating mode or the third operating mode; when the operating state of the main pump is the third operating state, the system operating mode that is automatically selected to switch is the third operating mode or the fourth operating mode.

[0107] S43: Determine the historical time t of the running task according to the running task and the historical running data;

[0108] According to the current system operation mode, calculate the estimated time t' of the running task;

[0109] Specifically, the historical time of the operating task is the empirical time. The multi-loop reactor system has obtained some historical operating data of the time required to complete the operating task during the previous test process and the previous task execution process. These data can provide a time reference for the current task execution process. Search for operating tasks similar to the current operating task in the previous operating tasks, and determine the historical time of the operating tasks required to complete the current operating task based on the operating tasks similar to the current operating task. For example, in the historical operating data of the multi-loop reactor system, the operating time of the operating task similar to the current operating task is 10 days, so it is determined that the historical time of the operating task required to complete the current operating task is 10 days.

[0110] Specifically, the estimated time for an operation task is the estimated time. Based on the current thermal-hydraulic parameters of the multi-loop reactor system, such as pressure, temperature, flow, as well as the health of the main pump and the current system operation mode, an estimated time for an operation task can be calculated by simulation.

[0111] S44: when the estimated time t' of the running task is less than or equal to the historical time t of the running task, determining that the system running mode is the current system running mode;

[0112] When the estimated operation task time t' is greater than the historical operation task time t, the system operation mode is determined to be another system operation mode corresponding to the operation state of the main pump.

[0113] For example, when the operating state of the main pump is the second operating state, when the estimated operating task time is less than or equal to the operating task historical time, if the selected current system operating mode is the second operating mode, it is determined to operate in the second operating mode; when the estimated operating task time is greater than the operating task historical time, if the selected current system operating mode is the second operating mode, it is determined to operate in the third operating mode. When the operating state of the main pump is the third operating state, when the estimated operating task time is less than or equal to the operating task historical time, if the selected current system operating mode is the third operating mode, it is determined to operate in the third operating mode; when the estimated operating task time is greater than the operating task historical time, if the selected current system operating mode is the third operating mode, it is determined to operate in the fourth operating mode.

[0114] Specifically, in this embodiment, when the multi-loop reactor system operates in the first operation mode, the faulty main pump automatically reduces the speed by the first amplitude, the reactor power regulation system reduces the reactor power at the same time, and the non-faulty main pumps in the loop symmetrical to the loop where the faulty main pump is located reduce the speed at the same time, so that the faulty main pump and the non-faulty main pumps in the symmetrical loop maintain loop symmetrical operation, and the reactor power is stabilized at a new power level. When the multi-loop reactor system operates in the second operation mode, the faulty main pump automatically reduces the speed by the second amplitude, the non-faulty main pumps in other loops reduce the speed at the same time, and the reactor power regulation system reduces the reactor power at the same time. When the multi-loop reactor system operates in the third operation mode, the faulty main pump stops running, the loop where the faulty main pump is located is closed, the faulty main pump is isolated, and the partial loop operation mode is adopted. The reactor power regulation system converts the control parameters and operates according to the control parameters in the partial loop mode. When the multi-loop reactor system operates in the fourth operation mode, the reactor is directly shut down.

[0115] When the multi-loop reactor system operates in the first operation mode, the second operation mode, and the third operation mode, the reactor power regulation system reduces the reactor power to match the flow in the multi-loop reactor system after the main pump in the multi-loop reduces its speed. The specific matching process can calculate the current system output power based on the loop flow measured after the main pump reduces its speed, and based on the pressure and temperature of the system, and then adjust the system power to the calculated current system output power level to avoid loop coolant pressure fluctuations.

[0116] Specifically, in one embodiment, if the health of the main pump jumps across intervals, the system should give a prompt / alarm signal. When the health of the main pump is less than 0.9, the server sends a prompt message to the user asking whether manual operation is required.

[0117] Specifically, in order to determine whether the health of the main pump jumps across intervals, the method further includes:

[0118] S1: Obtain multiple sliding windows in the current sampling period, and calculate the health of the main pump corresponding to each sliding window; specifically, the sampling time of each sliding window is usually tens of milliseconds. Multiple sliding windows are continuous time.

[0119] S2: Calculate the average health of the main pumps of multiple sliding windows in the current sampling period according to the health of the main pumps corresponding to each sliding window; specifically, sum the health of the main pumps corresponding to multiple sliding windows and calculate the ratio with the number of sliding windows to obtain the average health of the main pumps of multiple sliding windows in the current sampling period.

[0120] S3: Compare the health range corresponding to the health of the main pump corresponding to each sliding window in the current sampling period, and the health range corresponding to the average health of the main pump of multiple sliding windows, respectively, with the health range corresponding to the average health of the main pump in the previous period, to determine whether there is a transient change in the main pump operation status. Specifically, if the health range corresponding to the health of the main pump corresponding to only one sliding window in the current sampling period is different from the health range corresponding to the average health of the main pump in the previous period, then the health of the main pump corresponding to this sliding window is removed, and the average health of the main pump of multiple sliding windows in the current sampling period is recalculated; if the health range corresponding to the health of the main pump corresponding to each sliding window in the current sampling period, the average health of the main pump of multiple sliding windows, and the average health of the main pump in the previous period are all different, then it is determined that there is a transient change in the main pump operation status, that is, it is determined that the health of the main pump jumps across intervals, and then a reminder signal needs to be sent to the user.

[0121] In a specific embodiment, Figure 3As shown, the multi-loop reactor system includes a health management system and a multi-loop reactor system operation strategy recommendation module. The health management system obtains multiple measurement signals of the main pump, such as temperature, vibration, pressure, flow, etc., and calculates the health of the main pump according to the multiple measurement signals of the main pump, compares the health of the main pump with the four health ranges in the multi-loop reactor system operation strategy recommendation module, judges the operating state of the main pump according to the comparison result, and determines the system operation mode according to the mapping relationship between the operating state of the main pump and the system operation mode. The system operation mode includes a normal operation mode, a first operation mode, a second operation mode, a third operation mode, and a fourth operation mode. For example, the normal operation mode, the first operation mode, the second operation mode, the third operation mode, and the fourth operation mode are respectively set with corresponding buttons, and the operation mode can be switched automatically, or the corresponding button can be triggered by the user for manual switching. When the main pump operating state is judged to be the first operating state, the buttons corresponding to the first operating mode to the fourth operating mode light up; when the main pump operating state is judged to be the second operating state, the buttons corresponding to the second operating mode to the fourth operating mode light up; when the main pump operating state is judged to be the third operating state, the buttons corresponding to the third operating mode to the fourth operating mode light up.

[0122] Specifically, the main pump health management system conducts independent real-time health assessment on each main pump in the loop, and adjusts the operation mode of the multi-loop reactor system according to the health assessment results, thereby delaying the deterioration of the health status of the main pump and improving the safety and economy of the nuclear power plant. The main pump health management system can collect, record and store the operation data of the main pump to form a historical experience database and a real-time operation database.

[0123] Specifically, in one embodiment, the above adjustment method is used in the case of a single main pump failure in multiple loops. If two loops fail, the positions of the two failed loops need to be determined. If the two failed loops are symmetrical loops, the adjustment is performed according to the symmetrical loop operation mode; if the two failed loops are unilateral and both loops fail, or a larger failure occurs, the system is shut down for inspection.

[0124] It can be seen that in the above scheme, the present application obtains the health of the main pump through calculation of multiple measurement signals of the main pump, judges the operating status of the main pump based on the health of the main pump, and further determines the system operating mode based on the operating status of the main pump to ensure that the operation of the unit matches the status of the main pump and achieve the economy and safety of the unit operation.

[0125] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0126] In one embodiment, a multi-loop reactor system operation device is provided, and the multi-loop reactor system operation device corresponds one-to-one to the multi-loop reactor system operation method in the above embodiment. Figure 5 As shown, the multi-loop reactor system operation device includes an acquisition module 101, a calculation module 102, a judgment module 103, and a determination module 104. The detailed description of each functional module is as follows:

[0127] An acquisition module 101 is used to acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal;

[0128] A calculation module 102, configured to calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and a main pump characteristic reference value corresponding to each of the measurement signals;

[0129] A judgment module 103, used to judge the operating state of the main pump according to the health of the main pump;

[0130] The determination module 104 is used to determine the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0131] Specifically, the acquisition module 101 is further used to:

[0132] Obtain various measurement signals of the main pump;

[0133] Performing filtering processing on the various measurement signals of the main pump respectively;

[0134] The multiple measurement signals of the main pump after filtering are respectively analyzed in the time domain and the frequency domain, and the main pump characteristic value corresponding to each measurement signal is calculated and obtained.

[0135] Specifically, the calculation module 102 is further used to:

[0136] Calculate the deviation value of each measurement signal according to the main pump characteristic value corresponding to each measurement signal and the main pump characteristic reference value;

[0137] Obtaining an impact factor corresponding to each of the measurement signals;

[0138] Calculating the product of the deviation value of each measurement signal and its corresponding influencing factor to obtain the deviation degree of each measurement signal;

[0139] The sum of the deviations of the plurality of measurement signals is calculated to obtain the health status of the main pump.

[0140] Specifically, the judgment module 103 is further used to:

[0141] Comparing the health of the main pump with a plurality of health ranges to determine a health range corresponding to the health of the main pump;

[0142] Based on a mapping relationship between a plurality of health ranges and the operating state of the main pump, the operating state of the main pump is determined according to the health range corresponding to the health of the main pump.

[0143] Specifically, the determination module 104 is further configured to:

[0144] When the operating state of the main pump is the first operating state, determining the system operating mode to be the first operating mode;

[0145] When the operating state of the main pump is the second operating state, determining the system operating mode to be the second operating mode or the third operating mode;

[0146] When the operating state of the main pump is the third operating state, the system operating mode is determined to be the third operating mode or the fourth operating mode.

[0147] Specifically, the determination module 104 is further configured to:

[0148] Selecting one of the system operation modes corresponding to the operation state of the main pump as the current system operation mode;

[0149] Determine the historical time of the running task based on the running task and historical running data;

[0150] Calculate the estimated time of running tasks according to the current system operation mode;

[0151] When the estimated time of the running task is less than or equal to the historical time of the running task, determining that the system running mode is the current system running mode;

[0152] When the estimated operation task time is greater than the historical operation task time, the system operation mode is determined to be another system operation mode corresponding to the operation state of the main pump.

[0153] Specifically, the judgment module 103 is further used to:

[0154] Obtain multiple sliding windows within the current sampling period, and calculate the health of the main pump corresponding to each sliding window;

[0155] According to the health of the main pump corresponding to each sliding window, the average health of the main pump of multiple sliding windows in the current sampling period is calculated;

[0156] The health range corresponding to the health of the main pump corresponding to each sliding window in the current sampling period and the health range corresponding to the average health of the main pump of multiple sliding windows are compared with the health range corresponding to the average health of the main pump in the previous period to determine whether there is a transient change in the operating status of the main pump.

[0157] The present invention provides a multi-loop reactor system operating device. The present application obtains the health of the main pump by calculating multiple measurement signals of the main pump, and judges the operating status of the main pump according to the health of the main pump, and further determines the system operating mode according to the operating status of the main pump to ensure that the operation of the unit matches the status of the main pump, thereby achieving the economy and safety of the unit operation.

[0158] For the specific definition of the multi-loop reactor system operation device, please refer to the definition of the multi-loop reactor system operation method above, which will not be repeated here. Each module in the above-mentioned multi-loop reactor system operation device can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0159] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 6 As shown. The computer device includes a processor, a memory, a network interface and a database connected via a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile and / or volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external device end through a network connection. When the computer program is executed by the processor, it realizes the functions or steps of a service end side of a multi-loop reactor system operation method.

[0160] In one embodiment, a computer device is provided. The computer device may be a device end, and its internal structure diagram may be as follows: Figure 7As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external server through a network connection. When the computer program is executed by the processor, the functions or steps on the device side of a multi-loop reactor system operation method are implemented.

[0161] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0162] Acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal;

[0163] Calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals;

[0164] Determining the operating state of the main pump according to the health of the main pump;

[0165] The system operation mode is determined according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0166] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0167] Acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal;

[0168] Calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals;

[0169] Determining the operating state of the main pump according to the health of the main pump;

[0170] The system operation mode is determined according to the mapping relationship between the operation state of the main pump and the system operation mode.

[0171] It should be noted that the above functions or steps that can be implemented by the computer-readable storage medium or computer device can refer to the relevant descriptions on the server side and the device side in the aforementioned method embodiment. To avoid repetition, they will not be described one by one here.

[0172] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0173] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0174] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A method for operating a multi-loop reactor system, characterized in that: include: Acquire multiple measurement signals of the main pump, pre-process each measurement signal, and obtain a main pump characteristic value corresponding to each measurement signal; Calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals; Determining the operating state of the main pump according to the health of the main pump; The system operation mode is determined according to the mapping relationship between the operation state of the main pump and the system operation mode.

2. A method for operating a multi-loop reactor system according to claim 1, characterized in that: The acquiring of multiple measurement signals of the main pump, preprocessing each of the measurement signals, and obtaining a main pump characteristic value corresponding to each of the measurement signals, includes: Obtain various measurement signals of the main pump; Performing filtering processing on the various measurement signals of the main pump respectively; The multiple measurement signals of the main pump after filtering are respectively analyzed in the time domain and the frequency domain, and the main pump characteristic value corresponding to each measurement signal is calculated and obtained.

3. A method for operating a multi-loop reactor system according to claim 1, characterized in that: The main pump health is calculated according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and a main pump characteristic reference value corresponding to each of the measurement signals, including: Calculate the deviation value of each measurement signal according to the main pump characteristic value corresponding to each measurement signal and the main pump characteristic reference value; Obtaining an impact factor corresponding to each of the measurement signals; Calculating the product of the deviation value of each measurement signal and its corresponding influencing factor to obtain the deviation degree of each measurement signal; The sum of the deviations of the plurality of measurement signals is calculated to obtain the health status of the main pump.

4. A method for operating a multi-loop reactor system according to claim 1, characterized in that: The step of judging the operating state of the main pump according to the health of the main pump includes: Comparing the health of the main pump with a plurality of health ranges to determine a health range corresponding to the health of the main pump; Based on a mapping relationship between a plurality of health ranges and the operating state of the main pump, the operating state of the main pump is determined according to the health range corresponding to the health of the main pump.

5. The method for operating a multi-loop reactor system according to claim 1, characterized in that: Determining the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode includes: When the operating state of the main pump is the first operating state, determining the system operating mode to be the first operating mode; When the operating state of the main pump is the second operating state, determining the system operating mode to be the second operating mode or the third operating mode; When the operating state of the main pump is the third operating state, the system operating mode is determined to be the third operating mode or the fourth operating mode.

6. A method for operating a multi-loop reactor system according to claim 5, characterized in that: When the operating state of the main pump is the second operating state or the third operating state, the method further includes: Selecting one of the system operation modes corresponding to the operation state of the main pump as the current system operation mode; Determine the historical time of the running task based on the running task and historical running data; Calculate the estimated time of running tasks according to the current system operation mode; When the estimated time of the running task is less than or equal to the historical time of the running task, determining that the system running mode is the current system running mode; When the estimated operation task time is greater than the historical operation task time, the system operation mode is determined to be another system operation mode corresponding to the operation state of the main pump.

7. A method for operating a multi-loop reactor system according to claim 1, characterized in that: The method further comprises: Obtain multiple sliding windows within the current sampling period, and calculate the health of the main pump corresponding to each sliding window; According to the health of the main pump corresponding to each sliding window, the average health of the main pump of multiple sliding windows in the current sampling period is calculated; The health range corresponding to the health of the main pump corresponding to each sliding window in the current sampling period and the health range corresponding to the average health of the main pump of multiple sliding windows are compared with the health range corresponding to the average health of the main pump in the previous period to determine whether there is a transient change in the operating status of the main pump.

8. A multi-loop reactor system operating device, characterized in that: include: An acquisition module, used for acquiring multiple measurement signals of the main pump, preprocessing each of the measurement signals, and obtaining a main pump characteristic value corresponding to each of the measurement signals; A calculation module, used to calculate the health of the main pump according to the main pump characteristic value corresponding to each of the measurement signals, based on a preset main pump health calculation rule and the main pump characteristic reference value corresponding to each of the measurement signals; A judgment module, used for judging the operating state of the main pump according to the health of the main pump; The determination module is used to determine the system operation mode according to the mapping relationship between the operation state of the main pump and the system operation mode.

9. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of the multi-loop reactor system operating method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the multi-loop reactor system operating method according to any one of claims 1 to 7 are implemented.

Images