Auxiliary patrol system, application method and application system of auxiliary patrol system

Abstract

The application provides an auxiliary patrol system, an application method of the auxiliary patrol system, an application system, an electronic device and a computer readable storage medium. The auxiliary patrol system is connected with a unit DCS in real time through a nuclear power plant office network PI database, acquires state parameters and operation data of a nuclear power plant unit, judges whether the unit is in a power operation condition under a first preset condition, performs abnormality identification on patrol state parameters in a nuclear power plant operation process if the unit is in the power operation condition, obtains patrol monitoring results of system state parameters of the nuclear power plant, performs long-time prediction on a development and change trend of abnormal parameters of the nuclear power plant unit according to the patrol monitoring results, obtains a trend prediction result of the abnormal parameters, and pushes auxiliary decision information corresponding to the abnormal parameters of the unit. The technical scheme of the disclosure can reduce the work load of an operator, effectively improve the patrol work efficiency, and reduce the probability that an operator fails to identify early abnormality of unit operation parameters.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nuclear power informatization construction, in particular to an auxiliary patrol system, an application method of the auxiliary patrol system, an application system of the auxiliary patrol system, an electronic device and a computer readable storage medium. BACKGROUND

[0002] At present, most nuclear power plants use a digital control system (DCS system) to monitor the state changes of various operating state parameters of the unit in real time. The operators complete the operation monitoring task of the nuclear power plant by paying attention to the "alarm system" on the operator workplace (OWP) computer workstation in the main control room and periodically monitoring (i.e., "periodic patrol") based on various monitoring interfaces on the workstation screen. The "alarm system" is mainly used to issue an audible and visual alarm when the plant operating state parameter exceeds the "alarm threshold value", indicating that the operator should pay attention. The "periodic patrol" is that the operator analyzes the trend of the operating state parameter changes and monitors the overall operating state of the unit through the patrol monitoring interface on the workstation screen in the main control room before the plant operating parameter exceeds the aforementioned "alarm threshold value", so as to discover hidden troubles early and avoid the unit entering a fault operating condition.

[0003] However, the nuclear power plant system is large in scale and has a large number of unit operating state parameters. In the process of the "periodic patrol" of the operator in the main control room, there are problems of difficulty in early identification of abnormal state parameters and difficulty in risk prediction and evaluation when monitoring a large number of randomly fluctuating parameters of the unit operating state. Therefore, it is urgent to develop a corresponding auxiliary system with the functions of early identification of abnormalities and prediction of risk trends. Moreover, since the existing power plant operation management system is quite closed, after the corresponding system is developed, how to integrate it into the existing power plant operation management system, cooperate with the operator in the main control room to complete the patrol of the state parameters of the process system of the nuclear power plant, and make corresponding adjustments and changes to the work flow related to the patrol of the main control room of the power plant to reduce the work load of the operating personnel; ensuring that the traditional patrol procedures of the operator in the main control room are integrated with the intelligent system to reduce the probability that the operator fails to identify early abnormalities of the unit operating parameters due to human error or weak signs is a problem to be solved at present. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an auxiliary patrol system, an application method of the auxiliary patrol system, an application system of the auxiliary patrol system, an electronic device and a computer readable storage medium to effectively prolong the periodic patrol time interval of the operator in the main control room, reduce the work load of the operating personnel, effectively improve the patrol work efficiency, and reduce the probability that the operator fails to identify early abnormalities of the unit operating parameters due to human error or weak signs.

[0005] In a first aspect, the disclosure provides an auxiliary patrol system, which comprises:

[0006] a data access module, which is connected with a digital control system (DCS) of a nuclear power plant through a PI database of an office network of the nuclear power plant, and used to acquire state parameters and operation data of a nuclear power plant unit;

[0007] a judgment module, which is used to judge whether the unit is in a power operation condition under a first preset condition according to a preset unit operation condition judgment condition;

[0008] an intelligent detection module, which is used to perform abnormality identification on patrol state parameters in the operation process of the nuclear power plant when the judgment module judges that the unit meets the power operation condition under the first preset condition, and obtain patrol monitoring results of state parameters of each system of the nuclear power plant;

[0009] a trend prediction module, which is used to perform long-time prediction on a development trend of abnormal parameters of the nuclear power unit according to the patrol monitoring results, and obtain a trend prediction result of the abnormal parameters;

[0010] an information pushing module, which is used to push auxiliary decision information corresponding to the unit abnormal parameters according to the trend prediction result.

[0011] Further, the power operation condition under the first preset condition comprises:

[0012] a primary loop pressure P, a primary loop average temperature T and a nuclear power Pn respectively meet the following conditions: 15.4 MPa≤P≤15.6 MPa, 291.4℃≤T≤310℃ and 25%≤Pn≤100%.

[0013] Further, the patrol monitoring result comprises: a patrol state parameter real-time monitoring curve, a system “first-level warning” signal, an abnormal patrol state parameter bit number and an abnormal occurrence time;

[0014] The trend prediction result comprises: an abnormal patrol state parameter operation state development trend prediction curve, a time when a design limit value is expected to be possibly broken through and a system “second-level warning” signal.

[0015] In a second aspect, the disclosure provides an application method of an auxiliary patrol system, which comprises:

[0016] checking whether a current operation condition of a unit is a suitable condition for the auxiliary patrol system;

[0017] if yes, performing a preset operation compliance check on the auxiliary patrol system;

[0018] if the conformity check passes, sending a start auxiliary patrol instruction to the auxiliary patrol system to make the auxiliary patrol system perform abnormal early warning and trend risk prediction of the unit state parameters, and instructing the main control room operator to perform unit patrol according to the preset auxiliary patrol procedure and record the operation state of the unit and the auxiliary patrol system.

[0019] Further, the preset operation conformity check of the auxiliary patrol system includes:

[0020] When the DCS alarm system of the digital instrument control system of the unit does not issue a parameter alarm, within a first preset time of stable operation of each operating state parameter of the unit, check whether the display state of the auxiliary patrol system conforms to the actual state of the unit, if so, determine that the conformity check of the auxiliary patrol system under the non-alarm condition passes;

[0021] When the DCS alarm system of the unit has issued a parameter alarm, within a second preset time of operation of the auxiliary patrol system, check whether the abnormal early warning of the unit state parameters issued by the auxiliary patrol system corresponds to the existing alarm parameters of the DCS alarm system, and whether the display state of the auxiliary patrol system conforms to the actual operation state of the unit, if both are, record and shield the abnormal early warning of the unit state parameters, and determine that the conformity check of the auxiliary patrol system under the alarm condition passes;

[0022] If the conformity checks of the auxiliary patrol system under the non-alarm condition and the alarm condition both pass, it is determined that the operation conformity check of the auxiliary patrol system passes, otherwise, it is determined that the operation conformity check of the auxiliary patrol system does not pass.

[0023] Further, the method further includes:

[0024] If the current operating condition of the unit is other operating conditions except the applicable conditions of the auxiliary patrol system, send an exit operation instruction to the auxiliary patrol system, and instruct the main control room operator to perform unit patrol according to the preset periodic patrol mode.

[0025] Further, the making the auxiliary patrol system perform abnormal early warning and trend risk prediction of the unit state parameters includes:

[0026] During the normal operation of the nuclear power unit, when only the auxiliary patrol system issues an abnormal early warning of the unit state parameters, instruct the main control room operator to pay attention to the operating state of the early warning parameters, perform sound elimination confirmation, and verify the abnormal state of the unit state parameters to determine whether it is a real early warning;

[0027] When the auxiliary patrol system issues a unit state parameter abnormality early warning and the DCS alarm system also issues a parameter alarm during normal operation of the nuclear power unit, the main control room operator is instructed to prioritize processing of the triggered DCS alarm and to check the unit state parameter early warning information issued by the auxiliary patrol system;

[0028] During normal operation of the nuclear power unit, the auxiliary patrol system is instructed to periodically record the operation states of the unit and the auxiliary patrol system to ensure that the main control operator periodically and synchronously understands the overall operation states of the unit and the auxiliary patrol system.

[0029] Further, the method further comprises:

[0030] If the auxiliary patrol system has an unplanned system exit, the current operation state of the unit is recorded as the last recorded operation state in the preset auxiliary patrol procedure, and the main control room operator is instructed to switch the patrol work of the unit to the preset periodic patrol mode;

[0031] If the auxiliary patrol system has a functional abnormality and needs to be shut down, the current states of the unit and the auxiliary patrol system are recorded according to preset requirements, the preparation work before the auxiliary patrol system is shut down is performed, and after confirming that the influence of the auxiliary patrol system on the operation of the unit has been eliminated, an exit operation instruction is sent to the auxiliary patrol system;

[0032] If the auxiliary patrol system needs to be shut down according to the plan under normal function, the preparation work before the auxiliary patrol system is shut down is performed, and after confirming that the influence of the auxiliary patrol system on the operation of the unit has been eliminated, an exit operation instruction is sent to the auxiliary patrol system.

[0033] Further, the preparation work before the auxiliary patrol system is shut down comprises:

[0034] Switching the patrol work mode of the unit to the preset periodic patrol mode;

[0035] Declaring the auxiliary patrol system invalid.

[0036] Further, the instruction to the main control room operator to perform unit patrol according to the preset auxiliary patrol procedure and record the operation states of the unit and the auxiliary patrol system comprises:

[0037] Adding early warning state information in each state parameter record item of the patrol record table of the auxiliary patrol procedure, the early warning state information comprising normal operation, first-level early warning, second-level early warning, and true early warning, to instruct the main control room operator to periodically record the early warning state information of each state parameter based on the monitoring results of the auxiliary patrol system when the auxiliary patrol system is running;

[0038] The state record table of the auxiliary tour system is added in the tour procedure, and the operation end of the main control room is instructed to record the operation state of the auxiliary tour system during normal operation of the nuclear power plant, including system normal operation, system abnormality and system offline.

[0039] The operation end of the main control room is instructed to complete the tour record of the unit under the tour condition according to a preset frequency.

[0040] In a third aspect, the disclosure also provides an application system of the auxiliary tour system, and the application system comprises:

[0041] A first checking module is configured to check whether the current operation condition of the unit is a suitable condition for the auxiliary tour system;

[0042] A second checking module is configured to perform a preset operation compliance check on the auxiliary tour system if the first checking module checks that the current operation condition of the unit is the suitable condition for the auxiliary tour system;

[0043] An operation module is configured to send a start auxiliary tour instruction to the auxiliary tour system to make the auxiliary tour system perform abnormal early warning and trend risk prediction of the state parameters of the unit and instruct the operation end of the main control room to perform unit tour according to a preset auxiliary tour procedure and record the operation state of the unit and the auxiliary tour system if the result of the check by the second checking module is that the operation compliance check of the auxiliary tour system is passed.

[0044] In a fourth aspect, the disclosure provides an electronic device comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program stored in the memory to perform the application method of the auxiliary tour system according to any one of the second aspect.

[0045] In a fifth aspect, the disclosure provides a computer readable storage medium, wherein the computer readable storage medium stores a computer program, and the computer program is executed by a processor to implement the application method of the auxiliary tour system according to any one of the second aspect.

[0046] Advantages:

[0047] The auxiliary patrol system, the application method of the auxiliary patrol system, the application system, the electronic device and the computer readable storage medium provided by the disclosure can realize intelligent auxiliary patrol of a main control room of a nuclear power plant, effectively prolong the regular patrol time interval of the operator of the main control room, and reduce the work load of the operator; through the application of the auxiliary patrol, when there is a potential abnormality in the unit state parameter, the operator can be instructed to pay attention through sound and light warning, the patrol work efficiency of the operator of the main control room of the nuclear power plant is effectively improved, and the probability that the operator fails to identify early abnormality of the unit operation parameter is reduced due to human error or weak signs; the intelligent auxiliary patrol of the main control room of the nuclear power plant realized by the scheme is closely matched with the operator and the auxiliary patrol system, the auxiliary patrol system is effectively integrated into the existing power plant operation and management system, the maximum benefit of the auxiliary patrol system is fully utilized, the operator is assisted in the patrol of the main control room, the operator has more energy to pay attention to other important work, and a technical foundation is laid for optimization of the number of operators of the main control room of the nuclear power plant in the future. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 An architecture diagram of an auxiliary patrol system provided for the first embodiment of the disclosure is provided.

[0049] Figure 2 A physical architecture design diagram of an auxiliary patrol system provided for the first embodiment of the disclosure is provided.

[0050] Figure 3 A flowchart of an application method of an auxiliary patrol system provided for the second embodiment of the disclosure is provided.

[0051] Figure 4 A general operation mode diagram of an intelligent auxiliary patrol system provided for the second embodiment of the disclosure is provided.

[0052] Figure 5 An intelligent patrol procedure diagram of an operator of a main control room provided for the second embodiment of the disclosure is provided.

[0053] Figure 6 A start-up flowchart of an auxiliary patrol system provided for the third embodiment of the disclosure is provided.

[0054] Figure 7 An intelligent auxiliary patrol flowchart of a process system state parameter of a nuclear unit provided for the third embodiment of the disclosure is provided.

[0055] Figure 8 A shutdown flowchart of an auxiliary patrol system provided for the third embodiment of the disclosure is provided.

[0056] Figure 9 A structure diagram of an application system of an auxiliary patrol system provided for the fourth embodiment of the disclosure is provided.

[0057] Figure 10An architecture diagram of an electronic device provided for Embodiment Five of the present disclosure. DETAILED DESCRIPTION

[0058] In order for those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in further detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments and drawings described herein are merely for the purpose of explaining the present disclosure, and not limiting the present disclosure.

[0059] It should be noted that the terms "first", "second", and the like in the specification and claims of the present disclosure and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence; and, in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other at will.

[0060] In the present disclosure, the terms used in the embodiments of the present disclosure are merely for the purpose of describing specific embodiments, and are not intended to limit the present disclosure. The singular forms "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0061] In the subsequent description, the suffixes such as "module", "component", or "unit" used to represent elements are merely for the purpose of facilitating the description of the present disclosure, and have no specific meaning in themselves. Therefore, "module", "component", or "unit" can be used interchangeably.

[0062] The technical solutions of the present disclosure and how the technical solutions of the present disclosure solve the problems of difficult early identification of abnormalities and difficult risk prediction and evaluation in the process of nuclear power plant patrol, how to effectively integrate the auxiliary patrol system into the existing power plant operation and management system, cooperate with the operators in the main control room to complete the patrol work of the state parameters of the process system of the nuclear power plant, how to reduce the workload of the operators, and how to reduce the probability that the operator fails to identify early abnormalities of the unit operation parameters due to human error or weak signs will be described in detail below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments.

[0063] Figure 1 An architecture diagram of an auxiliary patrol system provided for Embodiment One of the present disclosure, as shown in Figure 1 The auxiliary patrol system comprises:

[0064] A data access module 11, which connects the unit digital instrument control system DCS through the nuclear power plant office network PI database in real time, is used to obtain the state parameters and operation data of the nuclear power plant unit;

[0065] The discrimination module 12 is configured to determine whether the unit is in a power operation condition under the first preset condition according to a preset unit operation condition discrimination condition;

[0066] The intelligent detection module 13 is configured to perform abnormality identification on a patrol state parameter in a nuclear power plant operation process when the discrimination module 12 determines that the unit meets the power operation condition under the first preset condition, and obtain a patrol monitoring result of the state parameter of each system of the nuclear power plant.

[0067] The trend prediction module 14 is configured to perform long-time prediction on a development and change trend of the abnormal parameter of the nuclear power unit according to the patrol monitoring result, and obtain a trend prediction result of the abnormal parameter.

[0068] The information pushing module 15 is configured to push auxiliary decision information corresponding to the abnormal parameter of the unit according to the trend prediction result.

[0069] The physical architecture design of the auxiliary patrol system provided in the embodiment is shown in Figure 2 The auxiliary patrol system is also called an intelligent auxiliary patrol system or an intelligent patrol system; a PI database in an office network of the nuclear power plant is connected to a storage unit DCS data in real time, and the intelligent auxiliary patrol system obtains operation data of main state parameters of key process systems from the PI database of the nuclear power plant in real time through the data access module 11, so as to support display of related application contents of the intelligent auxiliary patrol system terminal.

[0070] In addition to process data, design data is also accessed during data access; the process data is real-time monitoring data of main state parameters of key process systems of the nuclear power plant, and the design data is design files such as alarm response procedures and preventive maintenance plans corresponding to the main state parameters of the key process systems of the nuclear power plant, which are stored in the auxiliary patrol system after input.

[0071] The discrimination module 12 determines whether the unit is in a power operation condition under the first preset condition based on a unit operation condition discrimination condition in a nuclear power plant operation technical file; the power operation condition under the first preset condition can be set as a power operation condition of 25% or more, and the system automatically exits operation if the unit is in other operation conditions.

[0072] The intelligent detection module 13 constructs an intelligent monitoring model of main patrol parameters of the nuclear power plant based on intelligent technologies such as self-associative neural network algorithm, obtains state estimation values of the parameters as monitoring scales, sets a dynamic threshold band for a difference between a measured value and the state estimation value of the parameters, realizes timely and accurate identification of abnormalities of main patrol state parameters in the operation process of the nuclear power plant, and obtains a patrol monitoring result of the main state parameters of the key process systems of the nuclear power plant, including a real-time monitoring curve of the parameters, a system "first-level warning" signal, an abnormal parameter bit number and an abnormal occurrence time.

[0073] The trend prediction module 14 is based on intelligent technology such as long short-term memory neural network algorithm, constructs a time series prediction model of main patrol parameters of the nuclear power plant, obtains the development trend of the future 30 minutes based on the historical data information of the parameters, realizes long-time prediction of the abnormal parameter development trend of the nuclear power unit, including the abnormal parameter operation state development trend prediction curve, the time when the design limit is expected to be broken through, and the system "second warning" signal.

[0074] The information pushing module 15 pushes auxiliary decision-making information related to the abnormal parameters of the unit, including information such as abnormal reasons and treatment measures involved in the alarm response procedure file, and information whether there is a related maintenance plan in the unit preventive maintenance plan.

[0075] Further, the auxiliary patrol further includes an application module 16, which supports the intelligent auxiliary patrol system application of the main state parameters of the key process system of the nuclear power plant through the visual output and interaction of the system terminal interface based on the basic data and intelligent analysis algorithm, including the state monitoring and abnormal parameter risk trend prediction of the unit patrol.

[0076] The function of the auxiliary patrol system is mainly to set an early abnormality identification function for the main state parameters of the key process system of the nuclear power plant, as the "first warning" of the system. When the dynamic operation trend of the main state parameters of the key process system of the nuclear power plant appears a slight deviation, the "first warning" of the intelligent patrol system is triggered, a light color sound and light prompt is issued, the operator of the main control room is prompted to pay attention in advance, and the patrol monitoring efficiency of the operator is improved; and,

[0077] The trend risk prediction function is set for the abnormal state parameters identified by the system, as the "second warning" of the system. When the main state parameters of the key process system of the nuclear power plant are abnormal, the "first warning" of the intelligent patrol system is triggered, the system can automatically predict the risk change trend of the corresponding parameters, if there is a risk of breaking through the threshold of the existing "alarm system" within 30 minutes, the "second warning" of the intelligent patrol system is triggered, a dark color sound and light prompt is issued, the operator of the main control room is prompted to pay attention, maintenance measures are taken in time, the state deterioration of the unit is warned, and the safety and economy of the operation of the nuclear power plant are improved.

[0078] Further, the power operation condition under the first preset condition includes:

[0079] The primary loop pressure P, the primary loop average temperature T and the nuclear power Pn respectively satisfy the following conditions: 15.4 MPa≤P≤15.6 MPa, 291.4℃≤T≤310℃ and 25%≤Pn≤100%.

[0080] The power operation condition satisfying the first preset condition can be set as a power operation condition of 25% or more; the unit operation condition discrimination condition is as shown in the following table 1

[0081] Table 1: Unit operation condition discrimination condition

[0082]

[0083] The auxiliary patrol system of the embodiments of the present disclosure can solve the problems of difficult early identification of abnormalities and difficult risk prediction and evaluation in the process of the operator of the main control room of the nuclear power plant patrolling, improve the patrol efficiency of the operator of the main control room of the nuclear power plant, reduce the work pressure of the operating personnel, avoid human errors, and improve the accuracy and timeliness of the evaluation of the abnormal state of the unit.

[0084] Figure 3 The flowchart of the application method of the auxiliary patrol system provided in Embodiment Two of the present disclosure is shown in FIG. 1, which comprises the following steps. Figure 3

[0085] Step S001: checking whether the current operation condition of the unit is the applicable condition of the auxiliary patrol system;

[0086] Step S002: if yes, performing a preset operation compliance check on the auxiliary patrol system;

[0087] Step S003: if the operation compliance check is passed, sending a start auxiliary patrol instruction to the auxiliary patrol system, so that the auxiliary patrol system performs abnormal early warning and trend risk prediction of the unit state parameters, and instructs the operator of the main control room to perform unit patrol according to the preset auxiliary patrol procedure and record the operation state of the unit and the auxiliary patrol system.

[0088] ​To ensure that the operating state of a nuclear power plant meets the requirements of technical specifications, guidelines and related operation procedures, the main control room operator needs to monitor the state changes of various operating state parameters of the unit in real time. However, the regular patrol workload of the main control room operator is large, occupies more energy, and the personnel fatigue is high. In addition, it is easy to cause missed judgment and misjudgment due to the failure to identify the parameter trend anomaly in time. After the abnormal state parameters are monitored during the patrol, the influence of the abnormality on the safety of the nuclear power plant needs to be evaluated as soon as possible based on the experience and knowledge of the operating personnel, and the operation and maintenance strategy is formulated according to the predicted influence. The complexity of the nuclear power unit makes it difficult for human knowledge, experience and reliability to meet the accuracy and timeliness requirements of the abnormal state influence trend evaluation of the nuclear power plant. To improve the patrol work efficiency of the main control room operator of the nuclear power plant and reduce the operating burden of the main control operator, it is a feasible scheme to automatically and intelligently identify through the intelligent auxiliary patrol system of the main control room of the nuclear power plant (hereinafter referred to as the intelligent auxiliary patrol system or the auxiliary patrol system). The intelligent auxiliary patrol system is mainly used for early warning and trend risk prediction of the abnormality of 6 types of state parameters including temperature, pressure, liquid level, flow, pump speed and vibration effective value in 22 key process systems such as the reactor coolant system under the normal operating condition of the nuclear power plant. The intelligent auxiliary patrol system has two levels of early warning. When the residual error between the intelligent auxiliary patrol system estimated state curve and the measured state curve of the parameter exceeds the dynamic early warning threshold interval, the system triggers "first level early warning"; when the development trend prediction curve of the parameter corresponding to the "first level early warning" shows that there is a risk of breaking through the "alarm threshold" within 30 minutes, the system triggers "second level early warning". When the intelligent auxiliary patrol system unit state parameter abnormality early warning is triggered, the system will issue an audible and visual prompt to prompt the main control room operator to pay attention, so as to realize the intelligent auxiliary patrol of the main control room, effectively prolong the regular patrol time interval of the main control room operator, and improve the patrol work efficiency of the main control room operator of the nuclear power plant. However, how to effectively integrate the intelligent auxiliary patrol system into the existing power plant operation and management system, cooperate with the main control room operator to complete the patrol work of the state parameters of the process system of the nuclear power plant, and reduce the work load of the operating personnel; and after the intelligent auxiliary patrol system is applied in the main control room during the normal operation of the unit, how to ensure that the traditional main control room operator patrol procedure is compatible with the intelligent auxiliary patrol system, and reduce the probability that the operator fails to identify the early abnormality of the operating parameter of the unit due to human error or weak signs, has become a new problem to be solved.

[0089] Only the development of the intelligent auxiliary patrol system cannot effectively improve the patrol work efficiency of the main control room operator of the nuclear power plant. The system must be integrated and deployed into the main control room operation system of the power plant, and the organization mode and operator work flow related to the patrol of the main control room of the power plant must be adjusted and changed accordingly, so that the function of the intelligent auxiliary patrol system can be fully utilized. However, there is no corresponding use strategy for the intelligent auxiliary patrol system of the main control room of the current nuclear power plant,

[0090] The overall operation mode of the auxiliary patrol system application is shown in Figure 4 The power plant data is accessed, data analysis is performed by the auxiliary patrol system, including working condition discrimination, intelligent monitoring, trend prediction and information pushing, and then the application of the auxiliary patrol system is performed, including unit patrol state monitoring and abnormal trend risk prediction, and corresponding processing is performed by the patrol terminal workstation.

[0091] The auxiliary patrol system is deployed beside the main control room workstation of the pressurized water reactor nuclear power plant, without affecting the operation function of the nuclear power plant DCS system, and the main control room operator is assisted in patrol. Through the cooperation of the operator and the intelligent auxiliary patrol system, intelligent patrol of the process system patrol state parameters is realized under the normal operation condition of the nuclear power plant, the patrol work efficiency of the main control room operator of the nuclear power plant is improved, the work burden of the operation personnel is reduced, and human error is avoided.

[0092] Before the auxiliary patrol system goes online, the system needs to be checked first. After the check is passed and it is confirmed that the system is operating normally, the "auxiliary patrol system is officially put into operation" is announced. The check work includes: system commissioning condition check, through checking whether the current unit operation condition is the working condition suitable for the auxiliary patrol system, such as normal operation of the unit, no shutdown working condition (non-maintenance, non-fault working condition and non-accident working condition), after determining that the current operation condition is the working condition suitable for the intelligent auxiliary patrol system, the alarm system of the unit needs to be checked, whether there is parameter alarm in the current unit DCS alarm system, if there is, the alarm is handled first and the corresponding parameter alarm is marked; Then the running compliance of the intelligent auxiliary patrol system is checked, the running compliance needs to determine whether the display state of the intelligent auxiliary patrol system is consistent with the actual state of the unit, and can early warn the abnormal state of the unit and predict the trend risk; If the running compliance check is passed, the auxiliary patrol system is sent to start the auxiliary patrol instruction, the intelligent auxiliary patrol system is put into operation, the organization mode and operator work process related to the main control room patrol are adjusted and changed accordingly, the intelligent auxiliary patrol system performs abnormal early warning and trend risk prediction of the unit state parameters, and the main control room operator checks and records the operation state of the unit and the intelligent auxiliary patrol system according to the preset auxiliary patrol procedure.

[0093] The abnormality of the state parameter of the unit can be early warned in real time through the intelligent auxiliary patrol system, and in order to obtain the state of the unit, the parameters and states on the auxiliary patrol system need to be recorded, therefore, the traditional "main control room operator patrol procedure" needs to be adjusted, and the preset auxiliary patrol procedure is proposed, that is, the supporting "main control room operator intelligent patrol procedure", the new main control room operator intelligent patrol procedure can reduce the patrol frequency of the operator, and the "record" part is supplemented and adjusted, so that the main control room operator patrols and records the running state of the unit and the intelligent auxiliary patrol system according to the preset main control room operator intelligent patrol procedure.

[0094] Through the application of the intelligent auxiliary patrol system of the main control room of the nuclear power plant, the regular patrol time interval of the main control room operator can be effectively prolonged, the work load of the operator is reduced, the patrol work efficiency is effectively improved, and the probability that the operator fails to identify the early abnormality of the unit operation parameter due to human error or weak signs is reduced.

[0095] Further, the preset running compliance check of the auxiliary patrol system comprises:

[0096] When the unit DCS alarm system does not issue a parameter alarm, within the first preset time of the stable operation of each operation state parameter of the unit, it is checked whether the display state of the auxiliary patrol system conforms to the actual state of the unit, if yes, it is determined that the compliance check of the auxiliary patrol system under the unalarmed condition is passed;

[0097] When the unit DCS alarm system has issued a parameter alarm, within the second preset time of the operation of the auxiliary patrol system, it is checked whether the unit state parameter abnormality early warning issued by the auxiliary patrol system corresponds to the existing alarm parameter of the DCS alarm system, and whether the display state of the auxiliary patrol system conforms to the actual operation state of the unit, if yes, the unit state parameter abnormality early warning is recorded and shielded, and it is determined that the compliance check of the auxiliary patrol system under the alarmed condition is passed;

[0098] If the compliance checks of the auxiliary patrol system under the unalarmed condition and the alarmed condition are both passed, it is determined that the running compliance check of the auxiliary patrol system is passed, otherwise, it is determined that the running compliance check of the auxiliary patrol system is not passed.

[0099] The running compliance check of the auxiliary patrol system can ensure that the intelligent auxiliary patrol system can correctly display the running state of the unit, ensure that the alarm given by the intelligent auxiliary patrol system is real and effective, prevent the generation of false alarms due to system problems, or fail to give early warning when it should give early warning, and cannot identify abnormal conditions in advance. The system running compliance check is as follows:

[0100] When the unit DCS "alarm system" does not exist parameter alarm, the unit each operating state parameter smooth running in the first preset time, such as 30 minutes or 1 hour, the operator checks the display state of the intelligent auxiliary patrol system whether to meet the actual state of the unit, if the system still appears abnormal early warning, then exit the system, by the system maintenance engineer to check the system;

[0101] When the unit DCS "alarm system" exists parameter alarm, the system runs in the second preset time, the second preset time can be the same as the first preset time, such as 30 minutes or 1 hour, the operator checks whether the unit state parameter abnormal early warning issued by the system corresponds to the existing alarm parameter, and meets the actual operating state of the unit, if it is, first sound attenuation treatment, and mark record and shield this part of the early warning; If not, exit the system, by the system maintenance engineer to check the system.

[0102] Further, the method further comprises:

[0103] If the current operating condition of the unit is other operating conditions except the applicable conditions of the auxiliary patrol system, send the exit operation instruction to the auxiliary patrol system, and instruct the main control room operator to perform the unit patrol according to the preset periodic patrol mode.

[0104] The other operating conditions except the applicable conditions include unit maintenance conditions, fault conditions and accident conditions, etc., at this time, the use of intelligent auxiliary patrol system cannot reduce the workload of the operator, but because of the additional alarm of the intelligent auxiliary patrol system, it needs to be handled, which wastes manpower and material resources, therefore, the intelligent auxiliary patrol system is not suitable to be used, and the more intensive artificial periodic patrol mode needs to be used for patrol.

[0105] Further, the auxiliary patrol system performs the abnormal early warning and trend risk prediction of the unit state parameter, comprising:

[0106] During the normal operation of the nuclear power unit, when only the auxiliary patrol system issues the unit state parameter abnormal early warning, instruct the main control room operator to pay attention to the operating state of the early warning parameter, perform sound attenuation confirmation, and verify the abnormal state of the unit state parameter, to determine whether it is a real early warning;

[0107] During the normal operation of the nuclear power unit, when the auxiliary patrol system issues the unit state parameter abnormal early warning and the DCS alarm system also issues the parameter alarm, instruct the main control room operator to preferentially handle the triggered DCS alarm, and instruct the main control room operator to check the unit state parameter early warning information issued by the auxiliary patrol system;

[0108] During the normal operation of the nuclear power unit, the auxiliary intelligent patrol system is instructed to record the operation state of the unit and the auxiliary intelligent patrol system regularly to ensure that the main control operator regularly and synchronously understands the overall operation state of the unit and the auxiliary intelligent patrol system.

[0109] After the online of the intelligent auxiliary patrol system, the main control room operator cooperates with the intelligent auxiliary patrol system to carry out the patrol work of the state parameters of the process system of the nuclear power unit, and the specific working principles are as follows:

[0110] During the normal operation of the nuclear power unit, when the intelligent auxiliary patrol system does not have abnormal early warning of the unit state parameters, the operator does not need to pay attention to the system and can perform other work tasks related to the operation of the power plant at the work station;

[0111] During the normal operation of the nuclear power unit, when only the intelligent auxiliary patrol system issues an early warning of abnormal unit state parameters, the ROC operator is assigned by the main control room coordinator to pay attention to the operation state of the early warning parameters first, and then the operator verifies the abnormal state of the unit parameters to determine whether it is a real early warning; if it is a real early warning, the existing corresponding process is performed according to the state parameters of the unit, and if it is not a real early warning, the early warning is recorded.

[0112] During the normal operation of the nuclear power unit, when the "intelligent auxiliary patrol system abnormal early warning" and "DCS alarm" occur at the same time, the operator should prioritize processing the "DCS alarm" that has been triggered, and the ROC operator or other relevant personnel should be assigned by the main control room coordinator to check the unit state parameter early warning information issued by the intelligent auxiliary patrol system;

[0113] During the normal operation of the nuclear power unit, the system automatically records the operation state of the unit and the intelligent auxiliary patrol system once according to the "intelligent patrol procedure for main control room operators" to ensure that the main control operator regularly and synchronously understands the overall operation state of the unit and the system.

[0114] It can be seen that through the actual application of the intelligent auxiliary patrol of the main control room of the nuclear power plant, the regular patrol time interval of the main control room operator can be effectively prolonged, and the work load of the operating personnel can be reduced; when there is a potential abnormality in the unit state parameters, the operator can be instructed to pay attention through the sound and light early warning, which can effectively improve the patrol work efficiency of the main control room operator of the nuclear power plant, reduce the probability that the operator fails to identify the early abnormality of the unit operation parameters due to human error or weak signs, and make the intelligent auxiliary patrol system effectively integrated into the existing power plant operation management system, fully play its maximum benefit, and efficiently assist the main control room operator in patrol.

[0115] Further, the method further comprises:

[0116] If the auxiliary patrol system is out of service unexpectedly, the current operation state of the unit is recorded as the last recorded operation state in the preset auxiliary patrol procedure, and the main control room operator is instructed to switch the unit patrol work to the preset periodic patrol mode;

[0117] If the auxiliary patrol system is abnormal and needs to be closed, the current state of the unit and the auxiliary patrol system is recorded according to the preset requirements, the preparation work before the auxiliary patrol system is closed is performed, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, the auxiliary patrol system is sent an exit operation instruction;

[0118] If the auxiliary patrol system needs to be closed according to the plan under normal function, the preparation work before the auxiliary patrol system is closed is performed, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, the auxiliary patrol system is sent an exit operation instruction.

[0119] When the intelligent auxiliary patrol system in the main control room is applied, a corresponding strategy needs to be set for its shutdown. When the intelligent auxiliary patrol system is abnormal, it is shut down. For example, when the intelligent auxiliary patrol system in the main control room abnormally flashes out, it is an unexpected system exit, and the operation state of the unit will be recorded as the last record in the patrol procedure. At the same time, the operator will switch the unit patrol work to the traditional "periodic patrol" mode. Or, when the intelligent auxiliary patrol system needs to be closed due to its abnormal function, the operator needs to record the current state of the unit and the system according to the "new requirements of the main control room operator patrol procedure", and then perform the preparation work before the system is closed. After confirming that the influence of the system on the unit operation has been eliminated, the intelligent auxiliary patrol system is closed. When the intelligent auxiliary patrol system needs to be shut down under normal function, such as when the unit is overhauled, fault condition and accident condition, the intelligent auxiliary patrol system needs to be shut down. The main control room operator first performs the preparation work before the system is closed, confirms that the influence of the system on the unit operation has been eliminated, and then closes the intelligent auxiliary patrol system.

[0120] After the intelligent auxiliary patrol system is shut down, the normal periodic patrol needs to be restored to ensure that the intelligent auxiliary patrol system can seamlessly connect with the periodic patrol mode and prevent the situation that manual patrol cannot be performed in time due to the shutdown of the intelligent auxiliary patrol system, resulting in missed or misjudged situations caused by the failure to identify parameter trend abnormalities in time.

[0121] Further, the preparation work before the auxiliary patrol system is closed includes:

[0122] Switching the unit patrol work mode to the preset periodic patrol mode;

[0123] Announcing that the auxiliary patrol system is invalid.

[0124] Further, the indication master control room operator performs the preset auxiliary patrol procedure and records the operation state of the unit and the auxiliary patrol system, including:

[0125] The early warning state information is added in each state parameter record item of the inspection record table of the auxiliary patrol procedure, and the early warning state information includes normal operation, first level early warning, second level early warning and real early warning, so as to instruct the master control room operator to record the early warning state information of each state parameter based on the monitoring result of the auxiliary patrol system during the operation of the auxiliary patrol system;

[0126] The state record table of the auxiliary inspection system is added in the patrol procedure, and the master control room operator records the operation state of the auxiliary patrol system during the normal operation of the nuclear power plant, including system normal operation, system abnormality and system offline;

[0127] The master control room operator is instructed to complete the patrol record of the unit according to the preset frequency under the patrol condition.

[0128] In order to ensure that the intelligent auxiliary patrol system is fully utilized during the normal operation of the unit and the master control room operator efficiently patrols, the traditional "master control room operator patrol procedure" needs to be adjusted and the corresponding "intelligent master control room operator patrol procedure" is proposed. The traditional "master control room operator patrol procedure" includes the purpose, applicable scope, definition, reference file, responsibility, procedure, record and chart information, and the "intelligent master control room operator patrol procedure" of the intelligent auxiliary patrol system mainly needs to supplement and adjust the "record" part, such as Figure 5 The specific technical requirements are as follows:

[0129] The "normal operation", "first level early warning", "second level early warning" and "real early warning" are added in each state parameter record item of the inspection record table of the master control room patrol procedure. During the normal operation of the nuclear power plant, the master control room operator records the early warning state information of each inspection state parameter based on the monitoring result of the intelligent auxiliary patrol system;

[0130] The state record table of the intelligent auxiliary inspection system is added in the master control room patrol procedure. During the normal operation of the nuclear power plant, the master control room operator records the operation state of the intelligent auxiliary patrol system, including "system normal operation", "system abnormality" and "system offline";

[0131] The "1 hour / once" regular patrol record time in the original master control room operator patrol procedure is extended to "8 hours / once (shift change time)";

[0132] The unit operation parameters can be automatically recorded by the intelligent auxiliary patrol system and can be printed at any time.

[0133] For the purposes of making the objectives, technical solutions, and advantages of the present application clearer, more comprehensible, and easier to understand, the present disclosure is described in further detail below with reference to the accompanying drawings, in which Figure 6-8 As shown in FIG. 3, the present disclosure provides a method for applying the auxiliary patrol system, which is further described in detail below; the method includes three parts: starting the intelligent auxiliary patrol system in the main control room, intelligent patrol of the state parameters of the unit process system, and stopping the intelligent auxiliary patrol system in the main control room.

[0134] As shown in FIG. 4, starting the intelligent auxiliary patrol system in the main control room includes: Figure 6

[0135] Step S11: Start the intelligent auxiliary patrol system.

[0136] Step S12: Monitor the system operation conditions to determine whether the normal operation conditions are suitable for the intelligent auxiliary patrol system in the main control room; if not, proceed to step S13, and if so, proceed to step S14.

[0137] Step S13: Exit the system and use the traditional "periodic patrol" method for patrol.

[0138] Step S14: Detect the alarm system of the unit to determine whether there is a DCS alarm; if not, proceed to step S18, and if so, proceed to step S15.

[0139] Step S15: The operator marks and records the corresponding DCS alarm parameters.

[0140] Step S16: Perform a system operation compliance check to determine whether the abnormal early warning of the intelligent auxiliary patrol system corresponds to the existing DCS alarm parameters; if so, proceed to step S17, and if not, proceed to step S19.

[0141] Step S17: The operator silences the early warning and marks and records it.

[0142] Step S18: Perform a system operation compliance check to determine whether the system display state is consistent with the actual operation state of the unit; if so, proceed to step S110, and if not, proceed to step S19.

[0143] Step S19: Exit the intelligent auxiliary patrol system in the main control room and have the system maintenance engineer detect the system.

[0144] Step S110: The operator announces that the intelligent auxiliary patrol system is officially online.

[0145] As shown in FIG. 5, the intelligent patrol of the state parameters of the unit process system includes: Figure 7 Step S21: The operator cooperates with the intelligent auxiliary patrol system to conduct patrol of the state parameters of the unit process system.

[0146] Step S21: The operator cooperates with the intelligent auxiliary patrol system to conduct patrol of the state parameters of the unit process system.​

[0147] Step S22: Determine if the intelligent auxiliary inspection system issues an abnormal warning for the unit status parameters. If not, proceed to step S23; if yes, proceed to step S24.

[0148] Step S23: The operator does not need to pay attention to the intelligent inspection system and can perform other work tasks;

[0149] Step S24: Determine whether the unit's "alarm system" has issued a DCS alarm; if not, proceed to step S25; if yes, proceed to step S26.

[0150] Step S25: The coordinator prioritizes assigning ROC operators to monitor the operating status of the warning parameters and proceeds to step S28;

[0151] Step S26: The operator prioritizes handling triggered DCS alarms;

[0152] Step S27: The coordinator assigns ROC operators or other relevant personnel to monitor the operating status of the warning parameters;

[0153] Step S28: The operator first performs a silencing confirmation, and then verifies the abnormal status of the unit parameters;

[0154] Step S29: Contact the unit operators to handle the abnormal condition.

[0155] like Figure 8 As shown, the shutdown of the main control room intelligent auxiliary inspection system includes:

[0156] Step S31: Determine if the intelligent assisted inspection system is functioning normally. If not, proceed to step S32; if yes, proceed to step S36.

[0157] Step S32: Determine if the intelligent assisted inspection system crashes; if yes, proceed to step S33; otherwise, proceed to step S35.

[0158] Step S33: The unit's operating status will be based on the last record in the inspection procedure;

[0159] Step S34: The operator switches the unit's inspection work to the traditional "periodic inspection" mode and ends the process;

[0160] Step S35: The operator records the current status of the unit and system according to the "New Requirements for Main Control Room Operator Inspection Procedures"; and proceeds to step S37;

[0161] Step S36: Determine whether the unit is about to enter a specific operating condition. If yes, proceed to step S37; otherwise, do not shut down the unit.

[0162] Step S37: The operator switches the unit's inspection work to the traditional "periodic inspection" mode;

[0163] Step S38: The operator declares the intelligent auxiliary patrol system invalid;

[0164] Step S39: The operator turns off the intelligent auxiliary patrol system sound boost;

[0165] Step S310: Turn off the intelligent auxiliary patrol system.

[0166] The following is an example of the main control room intelligent auxiliary patrol of the process system state parameters during the normal operation of the pressurized water reactor nuclear power plant.

[0167] First, the main control room operator starts the intelligent auxiliary patrol system, and performs system pre-connection check according to the "main control room intelligent auxiliary patrol technical requirements":

[0168] System operation condition check: The operator checks whether the current unit operation condition is the normal operation condition suitable for the system, and confirms that it is the normal operation condition suitable for the system;

[0169] Unit "alarm system" check: The operator checks whether there is a parameter alarm in the current unit DCS "alarm system", and checks that there is no DCS alarm in the current unit.

[0170] System operation compliance check: Within 30 minutes of stable operation of each operating state parameter of the unit, the operator checks whether the display state of the intelligent auxiliary patrol system conforms to the actual state of the unit, and checks that the system is stable without early warning within 30 minutes of stable operation of the unit, which conforms to the actual operating state of the unit.

[0171] After confirming that the system is operating normally, the operator declares that the "intelligent auxiliary patrol system is officially online"; After the intelligent auxiliary patrol system is online, the main control room operator cooperates with the intelligent auxiliary patrol system to carry out the patrol work of the process system state parameters of the nuclear power unit, as follows:

[0172] The unit is in normal operation condition, the intelligent auxiliary patrol system has no abnormal early warning, the main control room operator pays attention to the workstation other monitoring system, or executes the workstation power plant operation related other work task, the system automatically records the unit and the intelligent auxiliary patrol system running state, including the process system patrol state parameter value, running state, early warning state, alarm state, and the running state of the intelligent auxiliary patrol system, to ensure that the operator regularly synchronizes the overall running state of the unit and the intelligent auxiliary patrol system;

[0173] The unit is in normal operation condition, the intelligent auxiliary patrol system issues an abnormal early warning of the unit state parameter, the main control room coordinator assigns the ROC operator to pay attention to the running state of the early warning parameter, and the operator first confirms the silence, and then verifies the abnormal state of the unit parameter;

[0174] According to the plan, the unit will enter the overhaul condition, and the intelligent auxiliary patrol system needs to be closed offline; the main control room operator performs the system closing preparation work according to the "overall use principle of the main control room intelligent auxiliary patrol system":

[0175] The main control room operator switches the unit patrol work to the traditional "periodic patrol" mode;

[0176] The main control room operator announces that the intelligent auxiliary patrol system is invalid;

[0177] The main control room operator closes the related sound indication of the intelligent auxiliary patrol system;

[0178] After the main control room operator confirms that the influence of the system on the unit operation has been eliminated, the intelligent auxiliary patrol system is closed.

[0179] During the use of the main control room intelligent auxiliary patrol system, the intelligent auxiliary patrol system is effectively integrated into the existing power plant operation and management system, closely cooperates with the main control room operator, fully plays the maximum benefit, accurately and efficiently assists the operator patrol work, improves the patrol work efficiency of the operator, and reduces the work burden of the operator. The technical scheme of the present disclosure has a very obvious effect on improving the safety and economy of the nuclear power plant operation.

[0180] Figure 9 The architecture diagram of an application system of an auxiliary patrol system provided by Embodiment Four of the present disclosure is shown in Figure 9 , which comprises:

[0181] A first checking module 21 is configured to check whether the current operation condition of the unit is a suitable condition for the auxiliary patrol system;

[0182] A second checking module 22 is configured to perform a preset operation compliance check on the auxiliary patrol system if the first checking module 21 checks that the current operation condition of the unit is a suitable condition for the auxiliary patrol system;

[0183] An operation module is configured to send a start auxiliary patrol instruction to the auxiliary patrol system if the operation compliance check of the auxiliary patrol system passes, so that the auxiliary patrol system performs abnormal early warning and trend risk prediction of the unit state parameters, and instructs the main control room operation end to perform unit patrol according to the preset auxiliary patrol procedure and record the operation state of the unit and the auxiliary patrol system

[0184] Further, the second checking module 22 is specifically configured as:

[0185] When the DCS alarm system of the unit does not issue a parameter alarm, within a first preset time of stable operation of each operating state parameter of the unit, the display state of the auxiliary patrol system is checked for compliance with the actual state of the unit. If so, it is determined that the compliance check of the auxiliary patrol system under the non-alarm condition is passed.

[0186] When the DCS alarm system of the unit has issued a parameter alarm, within a second preset time of operation of the auxiliary patrol system, it is checked whether the unit state parameter abnormality early warning issued by the auxiliary patrol system corresponds to the existing alarm parameter of the DCS alarm system, and whether the display state of the auxiliary patrol system conforms to the actual operating state of the unit. If both are, the unit state parameter abnormality early warning is recorded and shielded, and it is determined that the compliance check of the auxiliary patrol system under the alarm condition is passed.

[0187] If the compliance checks of the auxiliary patrol system under the non-alarm condition and the alarm condition are both passed, it is determined that the operation compliance check of the auxiliary patrol system is passed, otherwise, it is determined that the operation compliance check of the auxiliary patrol system is not passed.

[0188] Further, the application system further comprises:

[0189] An exit instruction module 24 is configured to send an exit operation instruction to the auxiliary patrol system if the first check module 21 checks that the current operating condition of the unit is other than the operating condition suitable for the auxiliary patrol system, and instruct the main control room operator to perform unit patrol in a preset periodic patrol mode.

[0190] Further, the auxiliary patrol system performs abnormal early warning and trend risk prediction of the unit state parameter, comprising:

[0191] During normal operation of the nuclear power unit, when only the auxiliary patrol system issues an abnormal early warning of the unit state parameter, the main control room operator is instructed to pay attention to the operating state of the early warning parameter, perform sound elimination confirmation, and verify the abnormal state of the unit state parameter to determine whether it is a real early warning;

[0192] During normal operation of the nuclear power unit, when the auxiliary patrol system issues an abnormal early warning of the unit state parameter and the DCS alarm system also issues a parameter alarm, the main control room operator is instructed to prioritize processing the triggered DCS alarm, and the main control room operator is instructed to check the unit state parameter early warning information issued by the auxiliary patrol system;

[0193] During normal operation of the nuclear power unit, the auxiliary patrol system is instructed to periodically record the operating state of the unit and the auxiliary patrol system to ensure that the main control operator periodically and synchronously understands the overall operating state of the unit and the auxiliary patrol system.

[0194] Further, the application system further comprises a shutdown processing module 25, which is arranged to:

[0195] If the auxiliary patrol system has an unplanned system exit, the current operation state of the unit is recorded as the last recorded operation state in the preset auxiliary patrol procedure, and the main control room operator is instructed to switch the unit patrol work to the preset periodic patrol mode;

[0196] If the auxiliary patrol system has a functional abnormality and needs to be closed, the current state of the unit and the auxiliary patrol system is recorded according to the preset requirement, the preparation work before the auxiliary patrol system is closed is performed, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, the exit instruction module 24 sends an exit operation instruction to the auxiliary patrol system;

[0197] If the auxiliary patrol system needs to be closed according to the plan under normal function, the preparation work before the auxiliary patrol system is closed is performed, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, the exit instruction module 24 sends an exit operation instruction to the auxiliary patrol system.

[0198] Further, the preparation work before the intelligent auxiliary patrol system is closed comprises:

[0199] Switching the patrol work mode of the unit to the preset periodic patrol mode;

[0200] Announcing that the auxiliary patrol system is invalid.

[0201] Further, the operation module 23 is specifically arranged to:

[0202] Adding early warning state information in each state parameter record item of the patrol record table of the auxiliary patrol procedure, the early warning state information comprising normal operation, first-level early warning, second-level early warning and true early warning, so as to instruct the main control room operator to record the early warning state information of each state parameter based on the monitoring result of the auxiliary patrol system during the operation of the auxiliary patrol system;

[0203] Adding a state record table of the auxiliary patrol system in the patrol procedure, and instructing the main control room operator to record the operation state of the auxiliary patrol system during the normal operation of the nuclear power plant, comprising: system normal operation, system abnormality and system offline;

[0204] Instructing the main control room operator to complete the patrol record of the unit under the patrol condition according to the preset frequency.

[0205] The application system of the auxiliary patrol system of the embodiments of the present disclosure is used to implement the application method of the auxiliary patrol system in method embodiments two and three, and is described simply. For details, refer to the related description in the foregoing method embodiments two and three, which will not be described here.

[0206] In addition, as Figure 10 shown, the fifth embodiment of the present disclosure also provides an electronic device, including a memory 100 and a processor 200, the memory 100 stores a computer program, when the processor 200 runs the computer program stored in the memory 100, the processor 200 executes the above various possible methods.

[0207] Among them, the memory 100 is connected with the processor 200, the memory 100 can adopt flash memory or read-only memory or other storage, and the processor 200 can adopt central processing unit or single-chip microcomputer.

[0208] In addition, the embodiments of the present disclosure also provide a computer readable storage medium, the computer readable storage medium stores a computer program, and the computer program is executed by a processor to execute the above various possible methods.

[0209] The computer readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information such as computer readable instructions, data structures, computer program modules or other data. The computer readable storage medium includes but is not limited to RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disc (DVD) or other optical disc storage, magnetic cassette, magnetic tape, magnetic disk storage or other magnetic storage device, or any other medium that can be used to store desired information and can be accessed by a computer.

[0210] It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. Various modifications and improvements can be made by those skilled in the art without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. An assisted patrol system, characterized by, The system comprises: a data access module, which is connected with a digital control system (DCS) of a nuclear power plant through a PI database of an office network of the nuclear power plant, and used to acquire state parameters and operation data of a nuclear power unit of the nuclear power plant; a discrimination module, which is used to determine whether the nuclear power unit is in a power operation condition under a first preset condition according to a preset discrimination condition of the nuclear power unit operation condition; an intelligent detection module, which is used to perform abnormal identification on a state parameter of a round-the-clock tour of the nuclear power plant when the discrimination module determines that the nuclear power unit is in the power operation condition under the first preset condition, and obtain a round-the-clock tour monitoring result of the state parameter of each system of the nuclear power plant; a trend prediction module, which is used to perform long-time prediction on a development trend of an abnormal parameter of the nuclear power unit according to the round-the-clock tour monitoring result, and obtain a trend prediction result of the abnormal parameter; an information pushing module, which is used to push auxiliary decision information corresponding to the abnormal parameter of the nuclear power unit according to the trend prediction result. The power operation condition under the first preset condition comprises: a primary loop pressure P, a primary loop average temperature T and a nuclear power Pn respectively satisfy the following conditions: 15.4 MPa≤P≤15.6 MPa, 291.4℃≤T≤310℃ and 25%≤Pn≤100%. The round-the-clock tour monitoring result comprises: a real-time monitoring curve of the state parameter of the round-the-clock tour, a system "first-level early warning" signal, an abnormal state parameter bit number of the round-the-clock tour and an abnormal occurrence time. The trend prediction result comprises: an abnormal state parameter operation state development trend prediction curve of the round-the-clock tour, a time when a design limit value is expected to be broken through and a system "second-level early warning" signal. The "first-level early warning" of the auxiliary intelligent round-the-clock tour system is an abnormal early identification function set for main state parameters of a key process system of the nuclear power plant. When a dynamic operation trend of the main state parameters of the key process system of the nuclear power plant appears a slight deviation, the "first-level early warning" signal of the auxiliary intelligent round-the-clock tour system is triggered to prompt an operator in a main control room to pay attention, thereby improving the round-the-clock tour monitoring efficiency of the operator. The "second-level early warning" of the auxiliary intelligent round-the-clock tour system is a trend risk prediction function set for the abnormal state parameters identified by the system. When the main state parameters of the key process system of the nuclear power plant are abnormal, the auxiliary intelligent round-the-clock tour system predicts a risk change trend of the corresponding parameters through the trend prediction module when the "first-level early warning" of the auxiliary intelligent round-the-clock tour system is triggered. If there is a risk of breaking through a threshold of an existing "alarm system" within 30 minutes, the "second-level early warning" signal of the auxiliary intelligent round-the-clock tour system is triggered to prompt the operator in the main control room to pay attention, thereby taking maintenance measures in time and improving the safety and economy of the nuclear power plant operation.

2. A method of using the auxiliary cart system of claim 1, wherein, The method comprises: checking whether a current operation condition of the nuclear power unit is a suitable condition of the auxiliary round-the-clock tour system; if yes, performing a preset operation compliance check on the auxiliary round-the-clock tour system; if the operation compliance check is passed, sending a start auxiliary round-the-clock tour instruction to the auxiliary round-the-clock tour system to make the auxiliary round-the-clock tour system perform abnormal early warning and trend risk prediction on state parameters of the nuclear power unit, and instructing an operator end in the main control room to perform a round-the-clock tour of the nuclear power unit according to a preset auxiliary round-the-clock tour procedure and record an operation state of the nuclear power unit and the auxiliary round-the-clock tour system.

3. The method of claim 2, wherein, The preset operation compliance check of the auxiliary patrol system comprises: When the DCS alarm system of the unit does not issue a parameter alarm, within a first preset time of stable operation of each operating state parameter of the unit, it is checked whether the display state of the auxiliary patrol system conforms to the actual state of the unit, and if so, it is determined that the compliance check of the auxiliary patrol system under the non-alarm condition is passed; When the DCS alarm system of the unit has issued a parameter alarm, within a second preset time of operation of the auxiliary patrol system, it is checked whether the unit state parameter abnormality early warning issued by the auxiliary patrol system corresponds to the existing alarm parameter of the DCS alarm system, and whether the display state of the auxiliary patrol system conforms to the actual operating state of the unit, and if so, the unit state parameter abnormality early warning is recorded and shielded, and it is determined that the compliance check of the auxiliary patrol system under the alarm condition is passed; If the compliance checks of the auxiliary patrol system under the non-alarm condition and the alarm condition are both passed, it is determined that the operation compliance check of the auxiliary patrol system is passed, otherwise, it is determined that the operation compliance check of the auxiliary patrol system is not passed.

4. The method of claim 2, wherein, The method further comprises: If the current operating condition of the unit is other operating conditions than the applicable conditions of the auxiliary patrol system, an exit operation instruction is sent to the auxiliary patrol system, and the main control room operating end is instructed to perform unit patrol in the preset periodic patrol mode.

5. The method of claim 2, wherein, The auxiliary patrol system performs early warning and trend risk prediction of the unit state parameters, comprising: During normal operation of the nuclear power unit, when only the auxiliary patrol system issues a unit state parameter abnormality early warning, the main control room operating end is instructed to pay attention to the operating state of the early warning parameter, perform sound elimination confirmation, and verify the abnormal state of the unit state parameter to determine whether it is a real early warning; During normal operation of the nuclear power unit, when the auxiliary patrol system issues a unit state parameter abnormality early warning and the DCS alarm system also issues a parameter alarm, the main control room operating end is instructed to prioritize handling of the triggered DCS alarm, and the main control room operating end is instructed to check the unit state parameter early warning information issued by the auxiliary patrol system; During normal operation of the nuclear power unit, the auxiliary patrol system is instructed to periodically record the operating state of the unit and the auxiliary patrol system to ensure that the main control operating end periodically synchronously understands the overall operating state of the unit and the auxiliary patrol system.

6. The method according to claim 2 or 5, characterized in that, The method further comprises: If the auxiliary patrol system exits non-planned system, the current operating state of the unit is recorded as the last recorded operating state in the preset auxiliary patrol procedure, and the main control room operating end is instructed to switch the unit patrol work to the preset periodic patrol mode; If the auxiliary patrol system has a functional abnormality and needs to be closed, the current state of the unit and the auxiliary patrol system is recorded according to the preset requirement, the auxiliary patrol system is prepared for closing, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, an exit operation instruction is sent to the auxiliary patrol system; If the auxiliary patrol system needs to be closed according to the plan under normal conditions, the auxiliary patrol system closing preparation is performed, and after confirming that the influence of the auxiliary patrol system on the unit operation has been eliminated, an exit operation instruction is sent to the auxiliary patrol system.

7. The method of claim 6, wherein, The auxiliary patrol system closing preparation includes: Switching the patrol mode of the unit to a preset periodic patrol mode; Announcing that the auxiliary patrol system is invalid.

8. The method of claim 2, wherein, The indication master control room operation end performs unit patrol according to the preset auxiliary patrol procedure and records the operation state of the unit and the auxiliary patrol system, including: Adding early warning state information in each state parameter record item of the auxiliary patrol procedure inspection record table, the early warning state information including normal operation, first-level early warning, second-level early warning and true early warning, so as to instruct the master control room operation end to record the early warning state information of each state parameter based on the monitoring result of the auxiliary patrol system during the operation of the auxiliary patrol system; Adding a state record table of the auxiliary patrol system in the patrol procedure, instructing the master control room operation end to record the operation state of the auxiliary patrol system during the normal operation of the nuclear power plant, including: system normal operation, system abnormality and system offline; Instructing the master control room operation end to complete the patrol record of the unit according to the preset frequency under the patrol condition.

9. An application system of the auxiliary patrol system according to claim 1, characterized by, The application system includes: A first checking module configured to check whether the current operation condition of the unit is a suitable condition for the auxiliary patrol system; A second checking module configured to perform a preset operation compliance check on the auxiliary patrol system if the first checking module checks that the current operation condition of the unit is a suitable condition for the auxiliary patrol system; An operation module configured to send a start auxiliary patrol instruction to the auxiliary patrol system if the result of the operation compliance check of the auxiliary patrol system checked by the second checking module is passed, so that the auxiliary patrol system performs abnormal early warning and trend risk prediction of the state parameters of the unit, and instructs the master control room operation end to perform unit patrol according to the preset auxiliary patrol procedure and record the operation state of the unit and the auxiliary patrol system.

10. An electronic device, comprising: A memory and a processor, the memory storing a computer program, and when the processor runs the computer program stored in the memory, the processor executes the application method of the auxiliary patrol system according to any one of claims 2-8.

11. A computer readable storage medium, characterized in that, The computer readable storage medium stores a computer program, and the computer program is executed by the processor to realize the application method of the auxiliary patrol system according to any one of claims 2-8.

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