Method and system for CPR1000 unit nuclear island system to cope with seawater high temperature, storage medium and electronic equipment

Abstract

The invention relates to a method and system for a CPR1000 unit nuclear island system to cope with seawater high temperature, a storage medium and electronic equipment. The method comprises the following steps that design reference information of the nuclear island system of a nuclear power plant is obtained; determining a monitoring threshold according to the design reference information; collecting the real-time temperature of seawater; judging the temperature change trend of the current seawater according to the real-time temperature of the seawater; if the current temperature change trend of the seawater is a rising trend, a temperature rise treatment method is adopted to deal with the high temperature of the seawater; if the current temperature change trend of the seawater is a decreasing trend, a temperature decreasing treatment method is adopted to deal with seawater decrease. According to the invention, the temperature of seawater can be monitored in real time, seawater decline below high temperature of seawater can be flexibly handled, and the safety and reliability of a nuclear island system under the condition of high temperature of seawater can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of nuclear safety operation, and more specifically, to a method, a system, a storage medium and an electronic device for a nuclear island system of a CPR1000 unit to cope with high seawater temperature. Background Art

[0002] In recent years, the seawater temperature at the nuclear power plant site has increased significantly compared with the original design stage. As the ultimate cold source for taking out the core heat, the temperature change of seawater has an impact on the safety and operation of the unit. In summer and autumn every year, the air temperature and seawater temperature in the nuclear power plant area are relatively high, and the temperature of each plant in the nuclear power plant will also increase, resulting in a deteriorating operating environment for the high-temperature sensitive mechanical, electrical and instrumentation equipment in the nuclear island system, increasing the possibility of abnormal operation of the nuclear island system equipment, and bringing potential risks to the safe and stable operation of the unit. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a method, a system, a storage medium and an electronic device for a nuclear island system of a CPR1000 unit to cope with high seawater temperature in view of the problems existing in the prior art.

[0004] The technical solution adopted by the present invention to solve its technical problems is to construct a method for a nuclear island system of a CPR1000 unit to cope with high seawater temperature, including the following steps:

[0005] Obtain the design basis information of the nuclear island system of the nuclear power plant;

[0006] Determine the monitoring threshold according to the design basis information;

[0007] Collect the real-time seawater temperature;

[0008] Judge the temperature change trend of the current seawater according to the real-time seawater temperature;

[0009] If the temperature change trend of the current seawater is an upward trend, adopt a temperature rise treatment method to cope with the high seawater temperature;

[0010] If the temperature change trend of the current seawater is a downward trend, adopt a temperature drop treatment method to cope with the seawater drop.

[0011] In the method for a nuclear island system of a CPR1000 unit to cope with high seawater temperature according to the present invention, the step of if the temperature change trend of the current seawater is an upward trend, adopt a temperature rise treatment method to cope with the high seawater temperature includes:

[0012] If the temperature change trend of the current seawater is an upward trend, execute the following steps:

[0013] Judge whether the real-time temperature of the current seawater is greater than or equal to the first seawater temperature threshold;

[0014] If so, perform early warning settings for high seawater temperature;

[0015] If not, do not perform any action;

[0016] After performing early warning protection against high seawater temperature, continue to monitor the seawater temperature and determine whether the real-time temperature of the current seawater is greater than or equal to the second seawater temperature threshold or whether the supply water temperature of the equipment cooling water system is greater than or equal to the set threshold;

[0017] If so, adopt control measures against high seawater temperature;

[0018] If not, maintain the current monitoring means;

[0019] After adopting control measures against high seawater temperature, monitor the supply water temperature of the equipment cooling water system of the operating train and determine whether the supply water temperature of the equipment cooling water system of the operating train is greater than or equal to the supply water temperature threshold;

[0020] If so, take enhanced cooling;

[0021] If not, maintain the current monitoring means;

[0022] After taking enhanced cooling, monitor the operating status of the standby pumps in the operating series of the important plant water system and determine whether the standby pumps in the operating series of the important plant water system are in the operating state and whether the supply water temperature of the equipment cooling water system of the operating train continues to be greater than or equal to the supply water temperature threshold;

[0023] If so, reduce the heat load;

[0024] If not, maintain the current monitoring means;

[0025] After reducing the heat load, continue to monitor the seawater temperature and determine whether the real-time temperature of the current seawater is greater than or equal to the upper limit threshold of the seawater temperature or whether the supply water temperature of the equipment cooling water system of the operating train is greater than or equal to the accident condition limit value;

[0026] If so, perform the unit withdrawal operation;

[0027] If not, maintain the current monitoring means.

[0028] In the method for the nuclear island system of the CPR1000 unit to respond to high seawater temperature according to the present invention, the execution of early warning protection against high seawater temperature includes:

[0029] Output a high seawater temperature early warning reminder;

[0030] Or, output a high supply water temperature early warning reminder for the equipment cooling water system.

[0031] In the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature according to the present invention, the anti-high-seawater-temperature control measures adopted include:

[0032] Monitoring the operating status of the standby pumps in the operating series of the important component cooling water system and confirming their availability;

[0033] Treating and reducing the waste liquid in the radioactive waste liquid tank;

[0034] Monitoring the availability of the regenerative heat exchanger in the steam generator blowdown system.

[0035] In the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature according to the present invention, the measures for strengthening cooling include:

[0036] Starting the standby pumps in the operating series of the important component cooling water system;

[0037] After determining that the standby pumps are started, eliminating the alarm.

[0038] In the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature according to the present invention, the measures for reducing the heat load include:

[0039] Stopping the common load of the two sets of units in the component cooling water system.

[0040] In the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature according to the present invention, if the current temperature change trend of the seawater is a downward trend, the method for coping with the seawater drop by using the temperature drop treatment method includes:

[0041] Judging whether the outlet temperature of the heat exchanger of the important component cooling water system / component cooling water system is less than the design value for power operation, and whether the current real-time temperature of the seawater is less than the second threshold value of the seawater temperature;

[0042] If so, controlling the important component cooling water system to resume single-pump operation.

[0043] The present invention also provides a system for the nuclear island system of the CPR1000 unit to cope with high seawater temperature, including:

[0044] An information acquisition unit, configured to acquire the design basis information of the nuclear island system of the nuclear power plant;

[0045] A data processing unit, configured to determine the monitoring threshold according to the design basis information;

[0046] A seawater temperature monitoring unit, configured to collect the real-time seawater temperature;

[0047] A seawater temperature trend judgment unit, configured to judge the current temperature change trend of the seawater according to the real-time seawater temperature;

[0048] A seawater high-temperature treatment unit, which is used to adopt a temperature-rise treatment method to deal with high seawater temperature when the temperature change trend of the current seawater is an upward trend;

[0049] A seawater low-temperature treatment unit, which is used to adopt a temperature-drop treatment method to deal with the seawater temperature drop when the temperature change trend of the current seawater is a downward trend.

[0050] The present invention also provides a storage medium storing a computer program, which is suitable for being loaded by a processor to execute the steps of the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature as described above.

[0051] The present invention also provides an electronic device, including a memory and a processor. A computer program is stored in the memory, and the processor executes the steps of the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature as described above by calling the computer program stored in the memory.

[0052] Implementing the method, system, storage medium and electronic device for the nuclear island system of the CPR1000 unit to cope with high seawater temperature of the present invention has the following beneficial effects: including the following steps: obtaining the design basis information of the nuclear island system of a nuclear power plant; determining a monitoring threshold according to the design basis information; collecting the real-time seawater temperature; judging the temperature change trend of the current seawater according to the real-time seawater temperature; if the temperature change trend of the current seawater is an upward trend, then adopt a temperature-rise treatment method to deal with high seawater temperature; if the temperature change trend of the current seawater is a downward trend, then adopt a temperature-drop treatment method to deal with the seawater temperature drop. Through the present invention, the seawater temperature can be monitored in real time and flexibly cope with the seawater temperature drop below high seawater temperature, ensuring the safety and reliability of the nuclear island system under high seawater temperature conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The present invention will be further described below in conjunction with the drawings and embodiments. In the drawings:

[0054] Figure 1 is a schematic flowchart of an embodiment of the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature provided by the present invention;

[0055] Figure 2 is a schematic flowchart of another embodiment of the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature provided by the present invention;

[0056] Figure 3 is a logic block diagram of the nuclear island system to cope with high seawater temperature provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0057] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0058] Reference Figure 1 , Figure 1 is a schematic flowchart of an embodiment of a method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature provided by the present invention.

[0059] As Figure 1 shown, the method for the nuclear island system of the CPR1000 unit to cope with high seawater temperature includes the following steps:

[0060] Step S10: Obtain the design basis information of the nuclear island system of the nuclear power plant.

[0061] Optionally, in the embodiments of the present invention, the design basis information mainly includes: the designed temperature T7 of seawater, the highest temperature T max of seawater, the designed value T RRI of the supply water temperature of the Residual Heat Removal System (RRI) at power operation, the limit value T RRI_LOCA of the supply water temperature of the Residual Heat Removal System (RRI) under the LOCA accident condition, the season of high seawater temperature, the nuclear island systems affected by seawater temperature, equipment functions, equipment compositions, safety classifications, parameters, monitoring instruments and alarm values / setting values, and operating conditions.

[0062] Step S20: Determine the monitoring thresholds according to the design basis information.

[0063] Optionally, in the embodiments of the present invention, the monitoring thresholds include: the first threshold of seawater temperature, the second threshold of seawater temperature, the supply water temperature threshold, the upper limit threshold of seawater temperature, the accident condition limit value, etc. Among them, the first threshold of seawater temperature is (T7 - X) °C, and X is generally 3 to 4 °C. The second threshold of seawater temperature is (T7 - Y) °C, and Y is generally 1 to 2 °C. The supply water temperature threshold is T RRI °C, the upper limit threshold of seawater temperature is the highest temperature T max of seawater, and the accident condition limit value is the limit value T RRI_LOCA °C of the supply water temperature of the Residual Heat Removal System (RRI) under the LOCA accident condition.

[0064] Step S30: Collect the real-time seawater temperature.

[0065] Specifically, in the embodiments of the present invention, the real-time seawater temperature can be monitored and collected by conventional seawater temperature monitoring equipment, and the present invention does not make specific limitations.

[0066] Step S40: Determine the temperature change trend of the current seawater based on the real-time seawater temperature.

[0067] Specifically, in the embodiment of the present invention, seawater temperature monitoring is established in the power station computer information and control system (KIC) in the main control room, so as to master and understand the current temperature change trend of the seawater in real time.

[0068] Step S50: If the temperature change trend of the current seawater is an upward trend, adopt a temperature rise treatment method to deal with the high seawater temperature.

[0069] In the embodiment of the present invention, as Figure 2 shown, if the temperature change trend of the current seawater is an upward trend, adopting a temperature rise treatment method to deal with the high seawater temperature includes: if the temperature change trend of the current seawater is an upward trend, then perform the following steps:

[0070] Step S201: Determine whether the real-time temperature of the current seawater is greater than or equal to the first seawater temperature threshold.

[0071] Step S202: If so, perform a warning setting for the high seawater temperature; if not, do not perform any action.

[0072] In the embodiment of the present invention, performing warning protection for the high seawater temperature includes: outputting a high seawater temperature warning reminder; or, outputting a high warning reminder for the supply water temperature of the equipment cooling water system. Specifically, if the real-time temperature of the current seawater ≥ (T7 - X) °C, the anti-high seawater temperature action is started. Through the seawater temperature and equipment cooling water temperature monitoring in the KIC system, a seawater temperature and equipment cooling water temperature trend chart can be obtained, and at the same time, the ongoing maintenance work in the nuclear island system affected by the seawater temperature is output, and it is reminded to complete the maintenance work as soon as possible. At the same time, a high seawater temperature warning reminder (that is, the seawater temperature rises to ≥ (T7 - Y) °C) is output through the KIC system, or, a high warning reminder for the supply water temperature of the equipment cooling water system (RRI system) (that is, the supply water temperature of the equipment cooling water system (RRI) rises to ≥ (T RRI - Y) °C).

[0073] Step S203: After performing the warning protection for the high seawater temperature, continue to monitor the seawater temperature, and determine whether the real-time temperature of the current seawater is greater than or equal to the second seawater temperature threshold or whether the supply water temperature of the equipment cooling water system is greater than or equal to the set threshold.

[0074] Step S204: If so, adopt anti-high seawater temperature control measures; if not, maintain the current monitoring means.

[0075] In the embodiments of the present invention, the anti-seawater high-temperature control measures include: monitoring the operating status of the standby pumps in the important service water system operation series and confirming their availability; treating and reducing the waste liquid in the radioactive waste liquid tank; monitoring the availability of the regenerative heat exchanger in the steam generator blowdown system. Specifically, when the seawater temperature rises to ≥(T7 - Y)°C, or the RRI supply water temperature in the operating train rises to ≥(T RRI - Y)°C, the status of the standby pumps in the important service water system (SEC) operating system is checked to confirm the availability of the standby pumps in the SEC system operating train. Treat and reduce the accumulated waste liquid in the radioactive waste liquid tank to avoid performing radioactive waste treatment-related work after the seawater temperature exceeds the limit. Check and ensure the availability of the regenerative heat exchanger APG002RF in the steam generator blowdown system (APG) to avoid starting the non-regenerative heat exchanger APG001RF cooled by RRI. Monitor the temperature trend of the key sensitive users in the RRI system and generate a temperature trend chart in the KIC system. Among them, the temperatures of the key sensitive users include: the temperature related to the main pump of the primary coolant system (RCP), the charging and letdown temperatures, the RRI motor temperature, the primary circuit boron concentration sampling temperature, and the temperature of the refueling water tank PTR001BA. When the seawater temperature SEC001MT / SEC002MT rises to ≥T7°C, the supervision frequency of the average seawater temperature is increased to 1 hour.

[0076] Step S205: After adopting the anti-seawater high-temperature control measures, monitor the supply water temperature of the equipment cooling water system in the operating train and determine whether the supply water temperature of the equipment cooling water system in the operating train is greater than or equal to the supply water temperature threshold.

[0077] Step S206: If so, take enhanced cooling; if not, maintain the current monitoring means.

[0078] In the embodiments of the present invention, taking enhanced cooling includes: starting the standby pumps in the important service water system operating train; after determining that the standby pumps are started, eliminating the alarm. Specifically, when the supply water temperature of the RRI system in the operating train rises to ≥T RRI °C, immediately start the standby pumps in the SEC system operating train, and after confirming that the standby pumps are started, eliminate the alarm.

[0079] Step S207: After taking enhanced cooling, monitor the operating status of the important service water system and determine whether the important service water system is in the operating state and whether the supply water temperature of the equipment cooling water system in the operating train continues to be greater than or equal to the supply water temperature threshold.

[0080] Step S208: If so, reduce the heat load; if not, maintain the current monitoring means.

[0081] In the embodiment of the present invention, reducing the heat load includes: stopping the common load of two sets of units in the equipment cooling water system. Specifically, if the SEC system is operating with both pumps and the supply water temperature of the RRI system continues to rise to ≥ T RRI °C, then the common load of the two units in the RRI system is shut down. Among them, the common load of the two units includes: the radioactive waste treatment system TEU, the radioactive waste gas treatment system TEG, the thermal laundry ventilation system DWL, and the auxiliary steam distribution system (SVA).

[0082] Step S209: After reducing the heat load, continue to monitor the seawater temperature, and determine whether the current real-time temperature of the seawater is greater than or equal to the upper limit threshold of the seawater temperature or whether the supply water temperature of the operating train equipment cooling water system is greater than or equal to the accident condition limit value.

[0083] Step S210: If so, perform the unit withdrawal operation; if not, maintain the current monitoring means.

[0084] Specifically, when the seawater temperature rises to ≥ T max °C or the supply water temperature of the operating train RRI system rises to ≥ T RRI_LOCA °C, then notify the unit that it must withdraw immediately.

[0085] Step S60: If the current change trend of the seawater temperature is a downward trend, then adopt the temperature drop treatment method to deal with the seawater drop.

[0086] In the embodiment of the present invention, if the current change trend of the seawater temperature is a downward trend, then adopting the temperature drop treatment method to deal with the seawater drop includes: determining whether the outlet temperature of the heat exchanger of the important station service water system / equipment cooling water system (i.e., the outlet temperature of the SEC / RRI heat exchanger (RRI008MT)) is less than the design value of power operation, and whether the current real-time temperature of the seawater is less than the second threshold of the seawater temperature; if so, control the important station service water system to resume single-pump operation. Specifically, if the temperature of RRI008MT < T RRI °C and the seawater temperature is lower than (T7 - Y) °C, then control the SEC system to resume single-pump operation.

[0087] Reference Figure 3 , Figure 3 is the logic block diagram of the system for the nuclear island system of the CPR1000 unit to cope with high seawater temperature provided by the present invention.

[0088] Specifically, as Figure 3 shown, the system for the nuclear island system of the CPR1000 unit to cope with high seawater temperature includes:[[]]

[0089] An information acquisition unit 301, configured to acquire the design basis information of the nuclear island system of the nuclear power plant.

[0090] A data processing unit 302, configured to determine a monitoring threshold according to design reference information.

[0091] A seawater temperature monitoring unit 303, configured to collect the real-time seawater temperature.

[0092] A seawater temperature trend judgment unit 304, configured to judge the temperature change trend of the current seawater according to the real-time seawater temperature.

[0093] A seawater high-temperature treatment unit 305, configured to adopt a temperature rise treatment method to cope with seawater high temperature when the temperature change trend of the current seawater is an upward trend.

[0094] A seawater low-temperature treatment unit 306, configured to adopt a temperature drop treatment method to cope with seawater drop when the temperature change trend of the current seawater is a downward trend.

[0095] Specifically, the specific cooperation operation process among the units in the system for the CPR1000 unit nuclear island system to cope with seawater high temperature can specifically refer to the method for the CPR1000 unit nuclear island system to cope with seawater high temperature as described above, which will not be elaborated here.

[0096] The present invention can be applied to the CPR1000 unit. The present invention combines the design and operation management of the CPR1000 unit nuclear island system, gives early warning and protection against seawater high temperature in advance, can adopt special anti-seawater control measures in advance, and takes measures such as strengthening cooling and reducing the heat load when seawater high temperature occurs, ensuring the safe and reliable operation of the nuclear island system under the condition of seawater high temperature.

[0097] In addition, an electronic device of the present invention includes a memory and a processor; the memory is used to store a computer program; the processor is used to execute the computer program to implement the method for the CPR1000 unit nuclear island system to cope with seawater high temperature as described in any one of the above. Specifically, according to the embodiments of the present invention, the process described with reference to the flowchart above can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program codes for executing the method shown in the flowchart. In such an embodiment, when the computer program is downloaded and installed through the electronic device and executed, it executes the above functions defined in the method of the embodiments of the present invention. The electronic device in the present invention can be a terminal such as a notebook, a desktop computer, a tablet computer, a smart phone, etc., or a server.

[0098] In addition, a storage medium of the present invention stores a computer program, and when the computer program is executed by a processor, it implements the method for the CPR1000 nuclear island system to cope with high seawater temperature in any one of the above. Specifically, it should be noted that the above storage medium of the present invention may be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. The computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples of the computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present invention, the computer-readable storage medium may be any tangible medium that contains or stores a program, and this program can be used by or in combination with an instruction execution system, apparatus, or device. In the present invention, the computer-readable signal medium may include a data signal propagated in a baseband or as part of a carrier wave, which carries computer-readable program code. Such a propagated data signal may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. The computer-readable signal medium may also be any computer-readable medium other than the computer-readable storage medium, and this computer-readable signal medium can send, propagate, or transmit a program for use by or in combination with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted by any suitable medium, including but not limited to: wires, optical cables, RF (radio frequency), etc., or any suitable combination of the above.

[0099] The above computer-readable medium may be included in the above electronic device; or it may exist separately without being assembled into the electronic device.

[0100] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0101] Those skilled in the art may further realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, computer software, or a combination of the two. To clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described according to functions in the above description. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0102] The steps of the methods or algorithms described in combination with the embodiments disclosed herein can be directly implemented by hardware, software modules executed by a processor, or a combination of the two. The software modules can be placed in a random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0103] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and cannot limit the protection scope of the present invention. All equivalent changes and modifications made to the scope of the claims of the present invention shall fall within the scope covered by the claims of the present invention.

Claims

1. A method for a CPR1000 unit nuclear island system to cope with high seawater temperature, characterized in that: The following steps are involved: Obtain design basis information for the nuclear island system of a nuclear power plant; Determining a monitoring threshold value according to the design benchmark information; Collect real-time seawater temperature; Determine the current temperature change trend of the seawater according to the real-time temperature of the seawater; If the current seawater temperature change trend is an upward trend, a temperature rise treatment method is adopted to deal with the high temperature of the seawater; If the current temperature change trend of the seawater is a downward trend, a temperature reduction treatment method is used to cope with the drop in seawater.

2. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 1, characterized in that: If the current seawater temperature change trend is an upward trend, the temperature rise treatment method is used to deal with the high temperature of the seawater, including: If the current seawater temperature change trend is an upward trend, perform the following steps: Determine whether the current real-time temperature of seawater is greater than or equal to a first threshold value of seawater temperature; If yes, then the warning setting for high sea water temperature is executed; If not, no action is performed; After executing the early warning protection for high seawater temperature, continue to monitor the seawater temperature, and determine whether the current real-time temperature of the seawater is greater than or equal to the second seawater temperature threshold or whether the water supply temperature of the equipment cooling water system is greater than or equal to the set threshold; If so, adopt measures to prevent high seawater temperature control; If not, maintain the current monitoring method; After adopting the seawater high temperature prevention control measures, monitor the water supply temperature of the cooling water system of the running equipment, and determine whether the water supply temperature of the cooling water system of the running equipment is greater than or equal to the water supply temperature threshold; If so, take enhanced cooling measures; If not, maintain the current monitoring method; After enhanced cooling is adopted, the operating status of the standby pumps of the important plant water system operation series is monitored, and it is determined whether the standby pumps of the important plant water system operation series are in operation and whether the water supply temperature of the cooling water system of the operation series equipment continues to be greater than or equal to the water supply temperature threshold; If so, reduce the heat load; If not, maintain the current monitoring method; After reducing the heat load, continue to monitor the seawater temperature, and determine whether the current real-time temperature of the seawater is greater than or equal to the upper limit threshold of the seawater temperature or whether the water supply temperature of the cooling water system of the running equipment is greater than or equal to the accident condition limit; If yes, execute the crew retreat operation; If not, maintain the current monitoring method.

3. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 2, characterized in that: The implementation of early warning protection against high sea water temperature includes: Output seawater high temperature warning reminder; Alternatively, a high temperature warning reminder of the water supply temperature of the cooling water system of the output device is provided.

4. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 2, characterized in that: The seawater high temperature control measures include: Monitor the operating status of the backup pumps in the operating series of important plant water systems and confirm their availability; Treat and reduce waste from radioactive waste tanks; Monitors regenerative heat exchanger availability for steam generator blowdown systems.

5. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 2, characterized in that: The enhanced cooling comprises: Start the standby pumps of the important plant water system operation series; After determining that the standby pump is started, the alarm is eliminated.

6. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 2, characterized in that: The heat load reduction includes: Stop the shared load of the two units in the equipment cooling water system.

7. The method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature according to claim 1, characterized in that: If the current seawater temperature change trend is a downward trend, then using a temperature reduction processing method to cope with the seawater drop includes: Determine whether the outlet temperature of the heat exchanger of the important plant water system / equipment cooling water system is less than the power operation design value, and whether the current real-time temperature of seawater is less than the second threshold value of seawater temperature; If so, control the important plant water system to resume single pump operation.

8. A system for a CPR1000 nuclear island system to cope with high seawater temperatures, characterized in that: include: An information acquisition unit, used to acquire design basis information of a nuclear island system of a nuclear power plant; A data processing unit, used to determine a monitoring threshold value according to the design benchmark information; Seawater temperature monitoring unit, used to collect real-time seawater temperature; A seawater temperature trend judging unit, used for judging the current temperature change trend of the seawater according to the real-time seawater temperature; A seawater high temperature treatment unit, used for adopting a temperature rise treatment method to deal with the high temperature of the seawater when the current temperature change trend of the seawater is an upward trend; The seawater low temperature processing unit is used to adopt a temperature reduction processing method to cope with the drop of seawater when the current temperature change trend of the seawater is a downward trend.

9. A storage medium, characterized in that: The storage medium stores a computer program, and the computer program is suitable for being loaded by a processor to execute the steps of the method for the nuclear island system of a CPR1000 unit to cope with high seawater temperature as described in any one of claims 1 to 7.

10. An electronic device, characterized in that: It comprises a memory and a processor, wherein the memory stores a computer program, and the processor executes the steps of the method for the nuclear island system of the CPR1000 unit to cope with high temperature of seawater as described in any one of claims 1 to 7 by calling the computer program stored in the memory.

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