CN113379302A

CN113379302A - Chemical efficiency control method, device, equipment and storage medium for nuclear power station

Info

Publication number: CN113379302A
Application number: CN202110728885.7A
Authority: CN
Inventors: 张锦浙; 张裕; 陈红雨; 吴迪; 林根仙
Original assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Daya Bay Nuclear Power Operations and Management Co Ltd; Lingdong Nuclear Power Co Ltd; Guangdong Nuclear Power Joint Venture Co Ltd; Lingao Nuclear Power Co Ltd
Current assignee: China General Nuclear Power Corp; CGN Power Co Ltd; Daya Bay Nuclear Power Operations and Management Co Ltd; Lingdong Nuclear Power Co Ltd; Guangdong Nuclear Power Joint Venture Co Ltd; Lingao Nuclear Power Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-10
Anticipated expiration: 2041-06-29
Also published as: CN113379302B

Abstract

The embodiment of the application relates to a chemical efficiency control method, a chemical efficiency control device, equipment and a computer readable storage medium of a nuclear power station, wherein the method comprises the steps of determining monitoring values of a plurality of compounds in a coolant of the nuclear power station according to a chemical efficiency evaluation instruction triggered by a user; judging whether a plurality of monitoring events of the nuclear power station are abnormal or not according to the monitoring values of a plurality of compounds under the condition that the compounds with the monitoring values exceeding the monitoring value threshold exist in the plurality of compounds; monitoring events for limiting the amount of compounds in the coolant; and under the condition that an abnormal monitoring event exists in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring event so as to improve the chemical efficiency of the nuclear power station. The method provided by the application can provide accurate data support for a user to determine the chemical efficiency control strategy of the nuclear power station, so that the user can specifically determine the chemical efficiency control strategy of the nuclear power station, and the chemical efficiency of the nuclear power station is effectively improved.

Description

Chemical efficiency control method, device, equipment and storage medium for nuclear power station

Technical Field

The present disclosure relates to the field of nuclear-assisted technologies, and in particular, to a chemical efficiency control method, apparatus, device, and computer-readable storage medium for a nuclear power plant.

Background

The nuclear power unit of the pressurized water reactor nuclear power station is used as a minimum power generation unit and mainly comprises a nuclear steam supply system (namely a primary loop system), a turbine generator system (namely a secondary loop system) and other auxiliary systems, wherein light water is mainly used as a coolant, and after the coolant absorbs heat energy released by fission of nuclear fuel in the primary loop system, the heat energy is transferred to the secondary loop system through a steam generator to generate steam, and then the steam enters a turbine to do work to drive a generator to generate power. The chemical efficiency of the nuclear power station is used for evaluating the control quality of the coolant in the primary loop system and the secondary loop system of the nuclear power station, and the control of the coolant in the primary loop system and the secondary loop system of the nuclear power station influences the service life of equipment of the whole nuclear power unit, so the chemical efficiency control of the nuclear power station is very necessary.

Disclosure of Invention

The embodiment of the application provides a chemical efficiency control method, a chemical efficiency control device, equipment and a computer readable storage medium for a nuclear power station, which can visually reflect the chemical efficiency of the nuclear power station in a preset time period and enable a user to determine a chemical efficiency control strategy of the nuclear power station according to the chemical efficiency so as to improve the chemical efficiency of the nuclear power station.

A first aspect of an embodiment of the present application provides a chemical efficiency control method for a nuclear power plant, including:

responding to a chemical efficiency evaluation instruction triggered by a user, determining monitoring values of a plurality of compounds in the coolant of the nuclear power station, and judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop system of the nuclear power station and a secondary loop system of the nuclear power station;

if the compounds with monitoring values exceeding the monitoring value threshold exist in the compounds, judging whether the monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the compounds; monitoring events to limit the amount of compounds in the coolant;

if the abnormal monitoring events exist in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring events; the chemical efficiency control strategy is used for improving the chemical efficiency of the nuclear power station.

A second aspect of an embodiment of the present application provides a chemical efficiency control apparatus for a nuclear power plant, including:

the determining and judging module is used for responding to a chemical efficiency evaluation instruction triggered by a user, determining monitoring values of a plurality of compounds in the coolant of the nuclear power station, and judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop system of the nuclear power station and a secondary loop system of the nuclear power station;

the determining and judging module is further used for judging whether the monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the compounds if the compounds with the monitoring values exceeding the monitoring value threshold exist in the compounds; monitoring events for limiting the amount of compounds in the coolant;

the determining and judging module is further used for determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring event if the abnormal monitoring event exists in the plurality of monitoring events; the chemical efficiency control strategy is used for improving the chemical efficiency of the nuclear power plant.

A third aspect of the embodiments of the present application provides a chemical efficiency control apparatus for a nuclear power plant, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any one of the above methods when executing the computer program.

A fourth aspect of embodiments of the present application provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any one of the methods described above.

The embodiment of the application provides a chemical efficiency control method, a chemical efficiency control device, equipment and a computer readable storage medium for a nuclear power station, wherein the method comprises the steps of determining monitoring values of a plurality of compounds in a coolant of the nuclear power station according to a chemical efficiency evaluation instruction triggered by a user, and then judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; wherein, the coolant is arranged in a primary loop system of the nuclear power station and a secondary loop system of the nuclear power station; judging whether a plurality of monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the plurality of compounds under the condition that the compounds with the monitoring values exceeding the monitoring value threshold exist in the plurality of compounds; monitoring events for limiting the amount of compounds in the coolant; and under the condition that an abnormal monitoring event exists in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring event so as to improve the chemical efficiency of the nuclear power station. The chemical efficiency control method of the nuclear power station can provide accurate data support for a user to determine the chemical efficiency control strategy of the nuclear power station, so that the user can determine the chemical efficiency control strategy of the nuclear power station in a targeted manner, and the chemical efficiency of the nuclear power station is effectively improved.

Drawings

FIG. 1 is a diagram of an exemplary chemical performance control method for a nuclear power plant;

FIG. 2 is a schematic flow chart illustrating a chemical performance control method for a nuclear power plant according to another embodiment;

FIG. 3 is a schematic flow chart illustrating a chemical performance control method for a nuclear power plant according to another embodiment;

FIG. 4 is a block diagram showing a chemical performance control apparatus of a nuclear power plant according to an embodiment;

fig. 5 is an internal structural view of a chemical efficiency control apparatus of a nuclear power plant in one embodiment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The chemical efficiency control method of the nuclear power plant provided by the application can be applied to the application environment shown in fig. 1. The nuclear power unit 100 of the nuclear power station comprises a primary loop system 102 and a secondary loop system 104, wherein coolants are placed in the primary loop system 102 and the secondary loop system 104, the coolants absorb heat energy released by fission of nuclear fuel in the primary loop system 102, then the heat energy is transferred to the secondary loop system 104 through a steam generator to generate steam, and the steam enters a steam turbine to do work to drive a generator to generate electricity. The method comprises the steps that the content of compounds in the coolant of a primary loop system 102 and a secondary loop system 104 is monitored by a monitoring device at any time, monitored values of the monitored compounds in the coolant of the primary loop system 102 and the coolant of the secondary loop system 104 are transmitted to a data processing device, the data processing device calculates scores of preset monitoring events by using the monitored values of the compounds in the coolant of the primary loop system 102 and the coolant of the secondary loop system 104, the data processing device determines whether the corresponding monitoring events are abnormal or not according to the scores of the preset monitoring events, and when the monitoring events are abnormal, a chemical efficiency control strategy of the nuclear power unit is determined based on the monitored values of the compounds related to the abnormal monitoring events, so that the chemical efficiency of the whole nuclear power station is improved. The data processing device may be, but is not limited to, various computer devices, an independent server, or a server cluster composed of a plurality of servers.

In one embodiment, as shown in fig. 2, a chemical performance control method for a nuclear power plant is provided, which is described by taking the method as an example of being applied to a data processing device, and the method includes the following steps:

step S202, responding to a chemical efficiency evaluation instruction triggered by a user, determining monitoring values of a plurality of compounds in the coolant of the nuclear power station, and judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop system of the nuclear power plant and a secondary loop system of the nuclear power plant.

The chemical efficiency evaluation instruction can be an instruction input by a user to the data processing equipment, the data processing equipment starts the chemical efficiency evaluation of a certain nuclear power unit, certain nuclear power units or the whole nuclear power plant according to the chemical efficiency evaluation instruction input by the user, and the chemical efficiency evaluation depends on the monitoring values of compounds in the coolant of a primary loop system and a secondary loop system in each nuclear power unit in the nuclear power plant as data support. The chemical efficacy assessment is performed over a preset monitoring period, which may be one month, half year, one year, etc. The monitoring data of the compounds in the coolant of the primary loop system and the secondary loop system of the nuclear power plant may be historical monitoring data stored in the data processing equipment, or may be data monitored by the monitoring equipment at any time after a preset monitoring time is determined, which is not limited in the present application. Different kinds of compounds are contained in the coolant, and only the compounds which have large influence on equipment in the nuclear power plant are considered in the application, and the influence of each compound on the equipment in the nuclear power plant is different, so that the threshold value corresponding to each compound is different. The coolant includes coolant flowing in one-circuit system and two-circuit system, coolant supplied for two-circuit system, coolant discarded for two-circuit system, coolant in water tank of one-circuit system, and coolant in water tank of two-circuit system. It should be noted that the nature of the coolant is also light water, and the present application distinguishes the coolant according to the location of the coolant within a preset monitoring time.

Illustratively, a user inputs an instruction for performing chemical efficiency evaluation on a nuclear power unit number 1 for one month to a server, and after receiving the instruction, the server may obtain monitoring values of compounds to be monitored for one month from the server, where the monitoring values include a plurality of monitoring values, each monitoring value of each compound is compared with a corresponding threshold, and finally, a result of whether the compound exceeds the threshold is obtained.

Step S204, if a compound with a monitoring value exceeding a monitoring value threshold exists in the plurality of compounds, judging whether a plurality of monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the plurality of compounds; the monitoring event is used to limit the amount of compounds in the coolant.

The monitoring events comprise a plurality of monitoring events, and the monitoring events monitor the nuclear power station from different dimensions. The plurality of monitoring events comprise a first monitoring event, a second monitoring event, a third monitoring event, a fourth monitoring event, a fifth monitoring event and a sixth monitoring event, wherein the first monitoring event is used for limiting the content of the soluble pollutant in the coolant, namely monitoring the nuclear power plant from the dimension of the coolant containing the content of the soluble pollutant; the second monitoring event is used for limiting the content of the metal oxide in the coolant, namely monitoring the nuclear power plant from the dimension of the content of the metal oxide in the coolant; the third monitoring event is used for limiting the content of lithium and the content of hydrogen in the coolant, namely monitoring the nuclear power plant from the dimension of the content of lithium and hydrogen in the coolant; the fourth monitoring event is used for limiting the content of sodium in the coolant, namely monitoring the nuclear power plant from the dimension of the content of sodium in the coolant; a fifth monitoring event is used for limiting the content of radioactive substances in the coolant, namely monitoring the nuclear power plant from the dimension of the content of the radioactive substances in the coolant; the sixth monitoring event is used to limit the level of impurities in the coolant, i.e. to monitor the nuclear power plant from the dimension of how much impurities are contained in the coolant. The compound related to the monitoring event comprises at least one and can be a plurality of compounds, and the monitored values of the plurality of compounds jointly determine whether the monitoring event has abnormality.

For example, the server may compare the monitored value of each compound related to the soluble contaminant with a corresponding monitored value threshold, then set a corresponding score for each compound based on the proportion of the monitored value of the compound exceeding the preset monitored value threshold, then weight the score of each compound related to the soluble contaminant to obtain a score of the first monitored event, then compare the score of the first monitored event with the preset score threshold, and determine that the first monitored event is abnormal when the score of the first monitored event exceeds the preset score threshold; or comparing the monitored value of each compound related to the soluble contaminant with the corresponding monitored value threshold, and determining that the first monitoring event is abnormal as long as the monitored value of one compound exceeds the corresponding monitored value threshold by a preset percentage; there are many ways to determine whether the monitoring event is abnormal, and the application is not limited to this.

Step S206, if an abnormal monitoring event exists in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring event; the chemical efficiency control strategy is used for improving the chemical efficiency of the nuclear power station.

The abnormal monitoring events comprise at least one, or a plurality of abnormal monitoring events; when a monitoring event is abnormal, a user may trace the monitored value of a compound related to the monitoring event, and may also specifically trace the monitored value of one or more corresponding compounds to determine a corresponding chemical efficiency control strategy according to the specific monitored value of the compound, for example, the chemical efficiency control strategy may be to add a filter screen at a connected pipeline, a steam generator, or the like, or to add a new compound to neutralize a compound to be controlled, or the like. This is not limited in this application.

For example, if the second monitoring event is abnormal and the compound related to the second monitoring event is suspended iron, which indicates that the content of suspended iron in the coolant of the steam generator is excessive, the suspended iron in the coolant of the steam generator may be filtered by adding a filter screen to the steam generator, and then the steam generator may be periodically cleaned, so as to improve the performance of the steam generator and simultaneously prolong the service life of the steam generator.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, which comprises the steps of determining monitoring values of a plurality of compounds in a coolant of the nuclear power station according to a chemical efficiency evaluation instruction triggered by a user, and then judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; wherein, the coolant is arranged in a primary loop system of the nuclear power station and a secondary loop system of the nuclear power station; judging whether a plurality of monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the plurality of compounds when the compounds with the monitoring values exceeding the monitoring value threshold exist in the plurality of compounds; monitoring events for limiting the amount of compounds in the coolant; and under the condition that an abnormal monitoring event exists in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring event so as to improve the chemical efficiency of the nuclear power station. The chemical efficiency control method of the nuclear power station can provide accurate data support for a user to determine the chemical efficiency control strategy of the nuclear power station, so that the user can determine the chemical efficiency control strategy of the nuclear power station in a targeted manner, and the chemical efficiency of the nuclear power station is effectively improved.

In one embodiment, as shown in fig. 3, fig. 3 is a step of a possible implementation method for how to determine a chemical efficiency score of a nuclear power station according to an embodiment of the present application, where the method includes:

and step S302, calculating the score of the monitoring event, wherein the score is used for representing the probability of the monitoring event being abnormal.

Scoring each compound according to the percentage of the monitored value of the compound related to the monitoring event exceeding a preset monitoring value threshold, and then weighting the score of each compound to obtain the score of the monitoring event; the monitoring event can also be scored based on the most compound exceeding a preset monitoring value threshold; other methods of calculating a score for a monitored event are possible and are not limited in this application.

Illustratively, for a preset monitoring period, the monitoring values of the suspended iron are monitored to be 0.5 μ g/kg, 0.6 μ g/kg, 0.7 μ g/kg, 0.8 μ g/kg and 0.9 μ g/kg, the monitoring value threshold of the suspended iron is 0.8 μ g/kg, and then the percentage of the monitoring value of the suspended iron exceeding the preset monitoring value threshold is 12.5%. For example, 12.5% corresponds to a score of 1, then the score for the second monitoring event is 1.

The chemical efficiency control method of the nuclear power station, provided by the embodiment of the application, scores each monitoring event, performs integrated analysis on scattered data, evaluates the chemical efficiency of the nuclear power station from different dimensions, is convenient for a user to master the quality of chemical efficiency control of the nuclear power station on the whole, and avoids the problem that the user cannot evaluate the whole chemical efficiency of the nuclear power station only through a single compound monitoring value.

And step S304, determining the chemical efficiency score of the nuclear power station according to the preset basic score and the scores of the monitoring events.

For example, the preset base score may be 100, the score of the first monitoring event is calculated by the above method to be 2, the score of the second monitoring event is 3, the score of the third monitoring event is 4, the score of the fourth monitoring event is 1, the score of the fifth monitoring event is 2, and the score of the sixth monitoring event is 3, so that the chemical efficiency score of the nuclear power plant may be obtained by subtracting the weighting of the base score and the scores of the plurality of monitoring events, and the chemical efficiency score of the nuclear power plant is 85. Determining that the chemical efficiency of the nuclear power plant is qualified when the chemical efficiency score of the nuclear power plant is 80 minutes; the chemical efficiency of the nuclear power plant may be determined to be excellent when the chemical efficiency score of the nuclear power plant is 90 minutes, and the like, and the present application does not limit this.

According to the chemical efficiency control method of the nuclear power station, the chemical efficiency score of the nuclear power station is determined through the preset basis and the scoring of a plurality of monitoring events, so that a more intuitive basis for evaluating the chemical efficiency of the nuclear power station is provided for a user, the situation that the user evaluates the chemical efficiency of the nuclear power station through one monitoring value of a plurality of single compounds is avoided, time, manpower and material resources are wasted, and the chemical efficiency evaluation of the nuclear power station is inaccurate due to the fact that no unified evaluation standard exists.

Step S306, outputting chemical efficiency prompt information; the chemical efficacy prompt is used to indicate a chemical efficacy score.

The chemical efficiency score of the nuclear power station can be displayed for a user on a display screen of the server, the user can conveniently check the chemical efficiency score of the nuclear power station, the advantages and disadvantages of the chemical efficiency of the nuclear power station can be mastered according to one chemical efficiency score, the situation that the user processes monitoring values of various single compounds and needs more data to be processed is avoided, the processing period of the data is long, and the chemical efficiency of the nuclear power station is not timely and accurately evaluated.

Optionally, the method further includes: based on the monitored values for the plurality of compounds, a monitored value for the compound associated with each of the plurality of monitoring events is determined.

The compound related to each monitoring event can comprise one or more compounds, and the monitoring value of the compound can be directly obtained from the memory of the server or can be monitored in real time at the preset monitoring time. The monitored value for each compound may include a plurality. The present application is not exemplified here.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, and chemical efficiency of the nuclear power station in different dimensions is further determined by determining the monitoring value of a compound related to each monitoring event, so that the chemical efficiency of the nuclear power station is more accurately evaluated.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a first monitored event when the monitored event is the first monitored event, the method comprising:

and monitoring the coolant of the primary loop system and the coolant of the secondary loop system during a first monitoring period, and acquiring a monitoring value of chloride in the coolant of the primary loop system, a monitoring value of sulfate in the coolant of the primary loop system, a monitoring value of fluoride in the coolant of the primary loop system, a monitoring value of sodium in the waste coolant of the secondary loop system, a monitoring value of chloride in the waste coolant of the secondary loop system, a monitoring value of sulfate in the waste coolant of the secondary loop system and a monitoring value of dissolved oxygen in the supplied coolant of the secondary loop system.

The first monitoring duration may be a total monitoring duration preset for chemical efficiency evaluation of the whole nuclear power station, the first monitoring duration may also be a duration set by a user and smaller than the preset total monitoring duration, and the first monitoring duration may be the same as or different from the second monitoring duration, the third monitoring duration, the fourth monitoring duration, the fifth monitoring duration and the sixth monitoring duration described below, which is not limited in the present application. The compound belongs to soluble pollutants in the coolant of a loop system and a two-loop system, and the soluble pollutants exceed a threshold value to influence the circulation of a pipeline, corrode the pipeline and reduce the service life of the pipeline.

For example, the monitoring value of the chloride in the coolant of the primary circuit system may be obtained according to a preset time interval, for example, the monitoring value of the chloride in the coolant of 10 primary circuit systems is obtained in the first monitoring period, the monitoring value of one chloride in the coolant of the primary circuit system may be obtained by weighted averaging the monitoring values of 10 chlorides, the monitoring value of one chloride in the coolant of the primary circuit system may be obtained by weighted averaging the monitoring values exceeding the threshold of the monitoring values among 10 monitoring values, or the maximum monitoring value exceeding the threshold of the monitoring values among 10 monitoring values may be used as the monitoring value of one chloride in the coolant of the primary circuit system, which is not limited in the present application.

The embodiment of the application discloses a chemical efficiency control method of a nuclear power station, which monitors the service environment of pipelines for transmitting coolant in a primary loop system and a secondary loop system by monitoring the monitoring values of soluble pollutants in the coolant circulating in the primary loop system and the secondary loop system so as to ensure the normal circulation of the pipelines and prolong the service life of the pipelines.

In one embodiment, the method is a possible implementation method for determining whether an abnormality occurs in a first monitoring event, and the method includes:

according to T₁、T₂、V₁、S₁、S₂、S₃Calculating the score of the first monitoring event by using the first constant and the second constant; wherein, T₁For a first monitoring period, T₂A cumulative first time period, V, for the monitored value of the soluble contaminant between the first monitored value threshold and the second monitored value threshold₁For maximum monitoring of soluble contaminants during the first monitoring period, when V₁Is greater than S₁When, V₁Taken as 0, when V₁Greater than S₃When, V₁Get S₃，S₁Is the first threshold value of the monitoring value of the soluble contaminant, S₂Is a second threshold value of the monitoring value of the soluble contaminant, S₃A third threshold value for a soluble contaminant;

and when the score of the first monitoring event exceeds a preset first score threshold value, determining that the first monitoring event is abnormal.

Optionally, when V₁Greater than S₂And is less than S₃According to T₁、T₂、V₁、S₁、S₂And calculating the score of the first monitoring event by the first constant;

when V is₁Greater than S₃According to T₁、T₂、V₁、S₁、S₂、S₃The first constant and the second constant calculate a score for the first monitoring event.

Illustratively, may be according to

And

or

A score for the first monitoring event is calculated. Wherein, when the current monitoring value of the soluble pollutant is less than S₁When, V₁Calculated as 0, then the score for the first monitoring event is 0; when the current value V of the soluble contaminant is monitored₁Greater than S₁And is less than S₂Time of flight_，By passing

Calculating to obtain a score of the first monitoring event, wherein V₁Taking a maximum monitoring value within a first monitoring duration; when the current value V of the soluble contaminant is monitored₁Greater than S₂And is less than S₃When passing through

Calculating a score of the first monitoring event, wherein V₁Taking a maximum monitoring value within a first monitoring duration; when the current value V of the soluble contaminant is monitored₁Greater than S₃When passing through

Calculating to obtain a score of a first monitoring event, wherein V₁Get S₃. For example, the score of the first monitoring event calculated by the above method is 2, and if the preset first score threshold is 5, the score of the first monitoring event does not exceed the preset first score threshold, and it is determined that no abnormality occurs in the first monitoring event.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, which is based on T₁、T₂、V₁、 S₁、S₂、S₃The first constant and the second constant are used for calculating the score of the first monitoring event, the required data are easy to obtain, and different monitoring value threshold values are set to calculate the score of the first monitoring event, so that the score of the first monitoring event is more reasonable.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a second monitoring event when the monitoring event is a first monitoring event, the method comprising:

and monitoring the coolant supplied to the two-loop system during a second monitoring period, and acquiring a monitoring value of suspended iron in the supplied coolant.

Wherein the supply coolant of the two-circuit system is the coolant supplied to the steam generator in the two-circuit system, and the second monitoring event is used for limiting the content of suspended iron in the coolant supplied by the steam generator, because the content of suspended iron exceeding the standard affects the performance and the service life of the steam generator.

The embodiment of the application discloses a chemical efficiency control method of a nuclear power station, which monitors the internal use environment of a steam generator by monitoring the monitoring value of suspended iron in a supplied coolant of a two-loop system, ensures the use performance of the steam generator and prolongs the service life of the steam generator.

In one embodiment, the method is a possible implementation method for determining whether an abnormality occurs in a second monitoring event, and the method includes:

according to T₃、T₄、V₂And S₄Calculating a score for the second monitoring event;

wherein, T₃For a second monitoring period, T₄The accumulated second time length V is that the monitoring value of the suspended iron exceeds the threshold value of the fourth monitoring value within the second monitoring time length₂Is the maximum monitoring value of the suspended iron within the second time length, S₄A fourth monitoring value threshold value of the suspended iron;

and when the score of the second monitoring event exceeds a preset second score threshold value, determining that the second monitoring event is abnormal.

Illustratively, may be according to

Calculating a score for a second monitoring event, e.g. T₃For 30 hours, in 30 consecutive hours, suspending ironThe monitored value exceeds S₄Is 5 hours, then T₄Is just 5 hours, V₂The score for the second monitoring event was calculated to be approximately 0.2 for the maximum monitoring value of 0.9 mug/kg of suspended iron over 5 hours. And if the preset second scoring threshold is 2, determining that the second monitoring event is not abnormal, wherein the score of the second monitoring event does not exceed the preset second scoring threshold.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, which is based on T₃、T₄、V₂And S₄And the score of the second monitoring event is calculated, the required data is easy to obtain, the score of the second monitoring event can be quickly obtained, and the efficiency of chemical efficiency evaluation of the nuclear power station is improved.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a third monitored event when the monitored event is the third monitored event, the method comprising:

and monitoring the coolant of the primary circuit system during a third monitoring period, and acquiring a monitoring value of lithium and a monitoring value of hydrogen in the coolant of the primary circuit system.

The coolant is positioned in a pipeline of a nuclear reactor of a primary loop system, the content of lithium and hydrogen in the coolant exceeds a threshold value, the acid-base balance of the coolant is influenced, the pipeline of the nuclear reactor is corroded due to the change of the pH value, and the service life of the pipeline of the nuclear reactor is shortened.

The method monitors the internal use environment of the pipeline of the nuclear reactor by monitoring the monitoring value of lithium and the monitoring value of hydrogen in the pipeline of the nuclear reactor of a loop system, so that the use performance of the pipeline of the nuclear reactor is ensured, and the service life of the pipeline of the nuclear reactor is prolonged.

In one embodiment, the method is a possible implementation method for determining whether an exception occurs in the third monitoring event, and the method includes:

according to T₅、T₆Calculating a score of a third monitoring event by using the third constant and the fourth constant;

wherein, T₅The accumulated third time length T is the accumulated third time length that the monitoring value of the lithium exceeds the preset first monitoring value range in the third monitoring time length₆The accumulated fourth time length is the accumulated fourth time length when the monitoring value of the hydrogen exceeds the preset second monitoring value range in the third monitoring time length;

and when the score of the third monitoring event exceeds a preset third score threshold value, determining that the third monitoring event is abnormal.

Illustratively, may be according to

Or

A score for the third monitoring event is calculated. Wherein the first monitoring value range is [6.9ml/kg,7.2ml/kg, for example]The second monitored value range is, for example, [22ml/kg,40ml/kg]Assuming that the third monitoring period is 30 hours, the monitoring value of lithium exceeds [6.9ml/kg,7.2ml/kg ] for the third monitoring period]The cumulative time period of (2) is 6 hours, and the monitored value of hydrogen exceeds [22ml/kg,40ml/kg ] in the third monitoring time period]Is 4 hours, when the monitored value of lithium is less than 7.2ml/kg and the monitored value of hydrogen is less than 40ml/kg, the total time of lithium ion concentration and hydrogen ion concentration is reduced by

Calculating to obtain a score of about 0.4 of the third monitoring event; when the monitoring value of lithium is more than 7.2ml/kg and the monitoring value of hydrogen is less than 40ml/kg, the method is carried out

Calculating to obtain a score of about 10.4 of the third monitoring event; when the monitoring value of lithium is less than 7.2ml/kg and the monitoring value of hydrogen is more than 40ml/kg, the method is carried out

Calculating to obtain a score of about 10.4 of the third monitoring event; when the monitoring value of lithium is more than 7.2ml/kg, the monitoring value of hydrogen is more thanAt 40ml/kg, by

A score of about 20.4 was calculated for the third monitoring event. And if the preset third scoring threshold is 15, the score of the third monitoring event exceeds the preset third scoring threshold when the monitoring value of lithium is more than 7.2ml/kg and the monitoring value of hydrogen is more than 40ml/kg, and the third monitoring event is determined to be abnormal.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, which is based on T₅、T₆And the third constant and the fourth constant calculate the score of the third monitoring event, the required data is easy to obtain, and different monitoring value threshold value ranges are set to calculate the score of the third monitoring event according to the situation, so that the score of the third monitoring event is more reasonable.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a fourth monitoring event when the monitoring event is the fourth monitoring event, the method comprising:

and monitoring the waste coolant of the two-loop system in the fourth monitoring time period, and acquiring a monitoring value of sodium in the waste coolant.

The method comprises the steps of monitoring the content of sodium exceeding a preset threshold in waste coolant of a two-loop system in a first monitoring event, and monitoring low-concentration sodium in the waste coolant of a steam generator of the two-loop system for a long time in a fourth monitoring event. Low concentrations of sodium in the spent coolant in the steam generator over time can also affect the performance and life of the steam generator.

The embodiment of the application discloses a chemical efficiency control method of a nuclear power station, which monitors the internal use environment of a steam generator by monitoring the monitoring value of sodium in waste coolant of a two-loop system, ensures the use performance of the steam generator and prolongs the service life of the steam generator.

In one embodiment, the method is a possible implementation method for determining whether an abnormality occurs in the fourth monitoring event, and the method includes:

according to S₅、T₇、T₈、V₃And S₆Calculating a score for the fourth monitoring event;

wherein S is₅A fifth threshold value of sodium, S₆A sixth threshold value, T, for sodium₇For a fourth monitoring period, T₈A cumulative third time period V during which the monitored value of sodium exceeds the threshold value of the fifth monitored value within the fourth monitoring time period₃Maximum monitoring value of sodium in the third period of time when V₃Greater than S₆When, V₃Get S₆；

And when the score of the fourth monitoring event exceeds a preset fourth score threshold value, determining that the fourth monitoring event is abnormal.

Illustratively, may be according to

And calculating the score of a fourth monitoring event, wherein if the fourth monitoring time is 30 hours, the threshold value of the fifth monitoring value of sodium is 0.2 mug/kg, the threshold value of the sixth monitoring value of sodium is 3 mug/kg, the accumulated time of the monitoring value of sodium exceeding the threshold value of the fifth monitoring value in the fourth monitoring time is 6 hours, the maximum monitoring value of sodium in 6 hours is 2 mug/kg, the score of the fourth monitoring event is 0.02, and if the fourth score threshold value is 5, it is determined that the fourth monitoring event is not abnormal. In addition, V is determined when the maximum monitoring value of sodium in 6 hours is greater than or equal to the sixth monitoring value threshold value of sodium of 3 [ mu ] g/kg₃Taking sodium sixth monitoring value threshold S₆And substituting the formula to calculate the score of the fourth monitoring event.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, which is based on S₅、T₇、T₈、 V₃And S₆And the score of the fourth monitoring event is calculated, the required data is easy to obtain, the score of the fourth monitoring event can be quickly obtained, and the efficiency of chemical efficiency evaluation of the nuclear power station is improved.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a fifth monitoring event when the monitoring event is the fifth monitoring event, the method comprising:

and monitoring the coolant of the primary loop system during a fifth monitoring period, and acquiring the effective specific activity of cobalt-58, the effective specific activity of cobalt-60 and the monitored value of zinc in the coolant of the primary loop system.

The coolant of the primary loop system is the coolant in the pipe of the nuclear reactor of the primary loop system, and the radioactive substances in the coolant at the position exceeding a preset threshold value can damage the health of people.

The embodiment of the application discloses a chemical efficiency control method of a nuclear power station, which monitors the working environment of a user by monitoring the monitoring value of radioactive substances in a pipeline of a nuclear reactor of a loop system, and avoids damage to the health of the user.

In one embodiment, the method is a possible implementation method for determining whether the fifth monitoring event is abnormal, and the method includes:

according to V₄、V₅、V₆、V₇、V₈And V₉Calculating a score for a fifth monitoring event;

wherein, V₄Is the minimum effective specific activity, V, of cobalt-58 during the fifth monitoring period₅Is the maximum effective specific activity, V, of cobalt-58 during the fifth monitoring period₆Is the minimum effective specific activity, V, of cobalt-60 during the fifth monitoring period₇Is the maximum effective specific activity, V, of cobalt-60 during the fifth monitoring period₈Is the minimum monitoring value, V, of zinc within the fifth monitoring period₉The maximum monitoring value of zinc in the fifth monitoring time length is obtained;

and when the score of the fifth monitoring event exceeds a preset fifth score threshold value, determining that the fifth monitoring event is abnormal.

Illustratively, may be according to

Calculating a score, false, of a fifth monitoring eventAssuming that the fifth monitoring period is 30 hours, the minimum effective specific activity V of the cobalt-58 in the fifth monitoring period₄At 10MBq/t, the maximum effective specific activity V of cobalt-58 in the fifth monitoring period₅At 60MBq/t, the minimum effective specific activity V of cobalt-60 in the fifth monitoring period₆At 10MBq/t, maximum effective specific activity V of cobalt-60 in the fifth monitoring period₇Is 60MBq/t, and the minimum monitoring value V of zinc in the fifth monitoring time period₈1 mug/kg, maximum monitoring value V of zinc in the fifth monitoring time period₉3 mug/kg, and a score of 1 is calculated for the fifth monitoring event according to the above calculation formula.

The embodiment of the application provides a chemical efficiency control method of a nuclear power station, V₄、V₅、V₆、V₇、 V₈And V₉And calculating the score of the fifth monitoring event, wherein the considered factors are more, so that the scoring basis of the fifth monitoring event is closer to the reality, and the judgment on whether the fifth monitoring event is abnormal or not is more accurate.

In one embodiment, the present embodiment is a possible implementation method for determining a monitored value of a compound associated with a sixth monitoring event when the monitoring event is the sixth monitoring event, the method comprising:

and monitoring the water tank coolant of the primary loop system and the replenishment coolant of the secondary loop system within a sixth monitoring time period, and acquiring a monitoring value of dissolved oxygen in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the primary loop system, a monitoring value of sulfate in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the secondary loop system and a monitoring value of sulfate in the water tank coolant of the secondary loop system.

The sixth monitoring time monitors the content of impurities in the coolant in the water tanks for supplying the coolant to the primary loop system and the secondary loop system. Impurities in the makeup tanks of the primary and secondary loop systems that exceed a predetermined threshold can affect subsequent flow transitions of the coolant, affecting the performance of the primary and secondary loop systems.

The embodiment of the application discloses a chemical efficiency control method of a nuclear power station, which monitors source coolants of a primary loop system and a secondary loop system by monitoring the monitoring values of impurities in the coolants of water tanks supplied by the primary loop system and the secondary loop system so as to ensure the later use effect of the coolants and improve the chemical efficiency of the primary loop system and the secondary loop system.

In one embodiment, the method is a possible implementation method for determining whether the sixth monitoring event is abnormal, and the method includes:

according to T_9、T_10、V_10、S_7、S_8、S_9、Calculating the score of a sixth monitoring event by using a fifth constant and a sixth constant;

wherein, T₉For the sixth monitoring period, T₁₀The fourth time length is the cumulative fourth time length of the impurity at the seventh monitoring value threshold value and the eighth monitoring value threshold value within the sixth monitoring time length₁₀Is the maximum monitoring value of the impurity within the fourth time period, S₇Is the seventh threshold value of the monitoring value of the impurity, S₈Is the eighth threshold value of the monitoring value of the impurity, S₉A ninth monitoring value threshold for impurities;

and when the score of the sixth monitoring event exceeds a preset sixth score threshold value, determining that the sixth monitoring event is abnormal.

Optionally, when V₁₀When the value is greater than the eighth monitoring value threshold value and less than the ninth monitoring value threshold value, according to T_9、 T_10、V_10、S_7、S₈And calculating a score for a sixth monitoring event by a fifth constant;

when V is₁₀When the value is larger than the ninth monitoring value threshold value, according to T_9、T_10、V_10、S_7、S_8、S_9、The fifth constant and the sixth constant calculate a score for the sixth monitoring event.

Illustratively, may be according to

Or

Wherein, when the current monitoring value of the impurities is less than S₇When, V₁₀Calculated as 0, then the score for the sixth monitoring event is 0; when the current monitoring value V of impurities₁₀Greater than S₇And is less than S₈Time of flight_，By passing

Calculating to obtain a score of a sixth monitoring event, wherein V₁₀Taking a maximum monitoring value within a sixth monitoring duration; when the current monitoring value V of impurities₁₀Greater than S₈And is less than S₉Time of flight_，By passing

Calculating to obtain a score of a sixth monitoring event, wherein V₁₀Taking a maximum monitoring value within a sixth monitoring duration; when the current monitoring value V of impurities₁₀Greater than S₉Time of flight_，By passing

Calculating to obtain a score of a sixth monitoring event, wherein V₁₀Get S₉. For example, the score of the sixth monitoring event calculated by the above method is 5, and if the preset first score threshold is 4, the score of the sixth monitoring event exceeds the preset sixth score threshold, and it is determined that the sixth monitoring event is abnormal.

The embodiment of the application provides a chemical efficiency control method, T, of a nuclear power station_9、T_10、V_10、S_7、S_8、S_9、And the fifth constant and the sixth constant calculate the score of the sixth monitoring event, the required data is easy to obtain, and different monitoring value threshold values are set to calculate the score of the sixth monitoring event, so that the score of the sixth monitoring event is more reasonable.

It should be understood that although the various steps in the flow charts of fig. 2-3 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2-3 may include multiple steps or phases, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps or phases.

In one embodiment, a chemical efficiency control apparatus 200 for a nuclear power plant is provided as shown, the apparatus comprising:

the determining and judging module 21 is used for responding to a chemical efficiency evaluation instruction triggered by a user, determining monitoring values of a plurality of compounds in the nuclear power station coolant, and judging whether the monitoring values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop of the nuclear power station and a secondary loop of the nuclear power station;

the determining and judging module 21 is further configured to, if a compound with a monitoring value exceeding a monitoring value threshold exists in the plurality of compounds, judge whether the plurality of monitoring events of the nuclear power plant are abnormal according to the monitoring values of the plurality of compounds; the monitoring event is used for limiting a compound monitoring value in the coolant;

the determining and judging module 21 is further configured to determine a chemical efficiency control strategy of the nuclear power plant based on the abnormal monitoring event if the abnormal monitoring event exists in the plurality of monitoring events; the chemical efficiency control strategy is used for improving the chemical efficiency of the nuclear power station.

In another embodiment, the chemical efficiency control apparatus further comprises: the calculation output module (22) outputs the calculation result,

the calculation output module 22 is used for calculating a score of the monitoring event, wherein the score is used for representing the probability of the monitoring event being abnormal; determining the chemical efficiency score of the nuclear power station according to the preset basis and the scores of the monitoring events; outputting chemical efficiency prompt information; the chemical efficacy prompt is used to indicate a chemical efficacy score.

In another embodiment, the determining module 21 is specifically configured to determine the monitored value of the compound related to each of the plurality of monitoring events according to the monitored values of the plurality of compounds.

In another embodiment, the determining and determining module 21 is specifically configured to monitor the coolant in the primary loop system and the coolant in the secondary loop system in the first monitoring period, and obtain a monitored value of chloride in the coolant in the primary loop system, a monitored value of sulfate in the coolant in the primary loop system, a monitored value of fluoride in the coolant in the primary loop system, a monitored value of sodium in the waste coolant in the secondary loop system, a monitored value of chloride in the waste coolant in the secondary loop system, a monitored value of sulfate in the waste coolant in the secondary loop system, and a monitored value of dissolved oxygen in the supplied coolant in the secondary loop system.

In another embodiment, the above determination module 21 is specifically configured to determine the value according to T₁、T₂、V₁、S₁、 S₂、S₃Calculating the score of the first monitoring event by using the first constant and the second constant; wherein, T₁For a first monitoring duration, T₂A cumulative first time period, V, for a monitored value of the soluble contaminant between a first monitored value threshold and a second monitored value threshold₁For actual monitoring of soluble contaminants, when V₁Greater than S₃When, V₁Get S₃，S₁Is the first threshold value of the monitoring value of the soluble contaminant, S₂Is a second threshold value of the monitored value of the dissolved contaminant, S₃A third threshold value for a soluble contaminant; and when the score of the first monitoring event exceeds a preset first score threshold value, determining that the first monitoring event is abnormal.

In another embodiment, the above-mentioned determination module 21 is specifically used for determining when V is₁Greater than S₂And is less than S₃According to T₁、T₂、V₁、S₁、S₂And calculating a score of the first monitoring event by using the first constant; when V is₁Greater than S₃According to T₁、T₂、V₁、S₁、S₂、S₃The first constant and the second constant calculate a score for the first monitoring event.

In another embodiment, the determination and judgment module 21 is specifically configured to monitor the supplied coolant of the two-circuit system and obtain a monitored value of the suspended iron in the supplied coolant during the second monitoring period.

In another embodiment, the above determination module 21 is specifically configured to determine the value according to T₃、T₄、V₂And S₄Calculating a score for the second monitoring event; wherein, T₃For a second monitoring period, T₄The accumulated second time length V for the monitoring value of the suspended iron to exceed the threshold value of the fourth monitoring value in the second monitoring₂Is the maximum monitoring value of the suspended iron within the second time length, S₄A fourth monitoring value threshold value of the suspended iron; and when the score of the second monitoring event exceeds a preset second score threshold value, determining that the second monitoring event is abnormal.

In another embodiment, the determining and determining module 21 is specifically configured to monitor the coolant in the primary loop system during the third monitoring period, and obtain a monitoring value of lithium and a monitoring value of hydrogen in the coolant in the primary loop system.

In another embodiment, the above determination module 21 is specifically configured to determine the value according to T₅、T₆Calculating a score of a third monitoring event by using the third constant and the fourth constant; wherein, T₅The accumulated third time length T is the accumulated third time length that the monitoring value of the lithium exceeds the preset first monitoring value range in the third monitoring time length₆The accumulated fourth time length is the accumulated fourth time length when the monitoring value of the hydrogen exceeds the preset second monitoring value range in the third monitoring time length; and when the score of the third monitoring event exceeds a preset third score threshold value, determining that the third monitoring event is abnormal.

In another embodiment, the determination and judgment module 21 is specifically configured to monitor the waste coolant of the two-circuit system and obtain a monitored value of sodium in the waste coolant during the fourth monitoring period.

In another embodiment, the determination module 21 is specifically configured to determine according to S₅、T₇、T₈、V₃And S₆Calculating a score for the fourth monitoring event; wherein S is₅A fifth threshold value of sodium, S₆A sixth threshold value, T, for sodium₇For a fourth monitoring period, T₈A cumulative third time period V during which the monitored value of sodium exceeds the threshold value of the fifth monitored value within the fourth monitoring time period₃Maximum monitoring value of sodium in the third period of time when V₃Greater than S₆When, V₃Get S₆(ii) a And when the score of the fourth monitoring event exceeds a preset fourth score threshold value, determining that the fourth monitoring event is abnormal.

In another embodiment, the determination and judgment module 21 is specifically configured to monitor the coolant of the primary loop system during the fifth monitoring period, and obtain the monitored values of the specific activity of cobalt-58, the specific activity of cobalt-60, and the zinc in the coolant of the primary loop system.

In another embodiment, the determination module 21 is specifically configured to determine the value according to V₄、V₅、V₆、V₇、 V₈And V₉Calculating a score for a fifth monitoring event; wherein, V₄Is the minimum effective specific activity, V, of cobalt-58 for the fifth monitoring period₅Is the maximum effective specific activity, V, of cobalt-58 during the fifth monitoring period₆Is the minimum effective specific activity, V, of cobalt-60 during the fifth monitoring period₇Maximum effective specific activity of cobalt-60 in the fifth monitoring period, V₈Is the minimum monitoring value, V, of zinc in the fifth monitoring period₉The maximum monitoring value of zinc in the fifth monitoring time length is obtained; and when the score of the fifth monitoring event exceeds a preset fifth score threshold value, determining that the fifth monitoring event is abnormal.

In another embodiment, the determining and determining module 21 is specifically configured to monitor the coolant in the water tank of the primary circuit system and the coolant in the coolant supply of the secondary circuit system within the sixth monitoring period, and obtain a monitored value of dissolved oxygen in the coolant in the water tank of the primary circuit system, a monitored value of sodium in the coolant in the water tank of the primary circuit system, a monitored value of chloride in the coolant in the water tank of the primary circuit system, a monitored value of sulfate in the coolant in the water tank of the primary circuit system, a monitored value of sodium in the coolant in the water tank of the primary circuit system, a monitored value of chloride in the coolant in the water tank of the secondary circuit system, and a monitored value of sulfate in the coolant in the water tank of the secondary circuit system.

In another embodiment, the above determination module 21 is specifically configured to determine the value according to T_9、T_10、V_10、S_7、 S_8、S_9、Calculating the score of a sixth monitoring event by using a fifth constant and a sixth constant; wherein, T₉For the sixth monitoring period, T₁₀The fourth time length is the cumulative fourth time length of the impurity at the seventh monitoring value threshold value and the eighth monitoring value threshold value within the sixth monitoring time length₁₀Is the maximum monitoring value of the impurity within the fourth time period, S₇Is the seventh threshold value of the monitoring value of the impurity, S₈Is the eighth threshold value of the monitoring value of the impurity, S₉A ninth monitoring value threshold for impurities; and when the score of the sixth monitoring event exceeds a preset sixth score threshold value, determining that the sixth monitoring event is abnormal.

In one embodiment, as shown in fig. 5, there is provided a chemical efficiency control apparatus for a nuclear power plant, comprising a memory and a processor, the memory storing a computer program, the processor implementing the following steps when executing the computer program:

In another embodiment, the processor, when executing the computer program, further performs the steps of: calculating the score of the monitoring event, wherein the score is used for representing the abnormal probability of the monitoring event;

determining the chemical efficiency score of the nuclear power station according to the preset basis and the scores of the monitoring events;

outputting chemical efficiency prompt information; the chemical efficacy prompt is used to indicate a chemical efficacy score.

In another embodiment, the processor, when executing the computer program, further performs the steps of: based on the monitored values for the plurality of compounds, a monitored value for the compound associated with each of the plurality of monitoring events is determined.

In another embodiment, the processor, when executing the computer program, further performs the steps of: during the first monitoring, the coolant of the primary loop system and the coolant of the secondary loop system are monitored, and a monitoring value of chloride in the coolant of the primary loop system, a monitoring value of sulfate in the coolant of the primary loop system, a monitoring value of fluoride in the coolant of the primary loop system, a monitoring value of sodium in the waste coolant of the secondary loop system, a monitoring value of chloride in the waste coolant of the secondary loop system, a monitoring value of sulfate in the waste coolant of the secondary loop system, and a monitoring value of dissolved oxygen in the supplied coolant of the secondary loop system are obtained.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to T₁、 T₂、V₁、S₁、S₂、S₃Calculating the score of the first monitoring event by using the first constant and the second constant;

wherein, T₁For a first monitoring period, T₂Is monitored for soluble contaminants atThe accumulated first duration, V, between the first monitoring value threshold and the second monitoring value threshold₁For actual monitoring of soluble contaminants, when V₁Greater than S₃When, V₁Get S₃，S₁Is the first threshold value of the monitoring value of the soluble contaminant, S₂Is a second threshold value of the monitoring value of the soluble pollutant, S₃A third threshold value for a soluble contaminant;

In another embodiment, the processor, when executing the computer program, further performs the steps of: when V is₁Greater than S₂And is less than S₃According to T₁、T₂、V₁、S₁、S₂And calculating a score of the first monitoring event by using the first constant;

In another embodiment, the processor, when executing the computer program, further performs the steps of: and monitoring the supplied coolant of the two-loop system in a second monitoring time period, and acquiring a monitoring value of suspended iron in the supplied coolant.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to T₃、 T₄、V₂And S₄Calculating a score for the second monitoring event;

In another embodiment, the processor, when executing the computer program, further performs the steps of: and monitoring the coolant of the primary circuit system during a third monitoring period, and acquiring a monitoring value of lithium and a monitoring value of hydrogen in the coolant of the primary circuit system.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to T₅、 T₆Calculating a score of a third monitoring event by using the third constant and the fourth constant;

In another embodiment, the processor, when executing the computer program, further performs the steps of: and monitoring the waste coolant of the two-loop system in the fourth monitoring time period, and acquiring a monitored value of sodium in the waste coolant.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to S₅、 T₇、T₈、V₃And S₆Calculating a score for the fourth monitoring event;

In another embodiment, the processor, when executing the computer program, further performs the steps of: and monitoring the coolant of the primary loop system during a fifth monitoring period, and acquiring the effective specific activity of cobalt-58, the effective specific activity of cobalt-60 and the monitoring value of zinc in the coolant of the primary loop system.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to V₄、 V₅、V₆、V₇、V₈And V₉Calculating a score for a fifth monitoring event;

In another embodiment, the processor, when executing the computer program, further performs the steps of: and monitoring the water tank coolant of the primary loop system and the replenishment coolant of the secondary loop system within a sixth monitoring time period, and acquiring a monitoring value of dissolved oxygen in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the primary loop system, a monitoring value of sulfate in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the secondary loop system and a monitoring value of sulfate in the water tank coolant of the secondary loop system.

In another embodiment, the processor, when executing the computer program, further performs the steps of: according to T_9、T_10、 V_10、S_7、S_8、S_9、Calculating the score of a sixth monitoring event by using a fifth constant and a sixth constant;

In another embodiment, the processor, when executing the computer program, further performs the steps of: when V is₁₀When the value is greater than the eighth monitoring value threshold value and less than the ninth monitoring value threshold value, according to T_9、T_10、V_10、S_7、S₈And calculating a score for a sixth monitoring event by a fifth constant; when V is₁₀When the value is larger than the ninth monitoring value threshold value, according to T_9、T_10、V_10、 S_7、S_8、S_9、The fifth constant and the sixth constant calculate a score for the sixth monitoring event.

In one embodiment, a computer-readable storage medium is provided, having stored thereon a computer program which, when executed by a processor, performs the steps of:

In another embodiment, the computer program when executed by the processor further performs the steps of: calculating the score of the monitoring event, wherein the score is used for representing the abnormal probability of the monitoring event;

In another embodiment, the computer program when executed by the processor further performs the steps of: based on the monitored values for the plurality of compounds, a monitored value for the compound associated with each of the plurality of monitoring events is determined.

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the coolant of the primary loop system and the coolant of the secondary loop system during a first monitoring period, and acquiring a monitoring value of chloride in the coolant of the primary loop system, a monitoring value of sulfate in the coolant of the primary loop system, a monitoring value of fluoride in the coolant of the primary loop system, a monitoring value of sodium in the waste coolant of the secondary loop system, a monitoring value of chloride in the waste coolant of the secondary loop system, a monitoring value of sulfate in the waste coolant of the secondary loop system and a monitoring value of dissolved oxygen in the supplied coolant of the secondary loop system.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to T₁、 T₂、V₁、S₁、S₂、S₃Calculating the score of the first monitoring event by using the first constant and the second constant;

wherein, T₁For a first monitoring period, T₂A cumulative first time period, V, for a monitored value of the soluble contaminant between a first monitored value threshold and a second monitored value threshold₁For actual monitoring of soluble contaminants, when V₁Greater than S₃When, V₁Get S₃，S₁To dissolveFirst threshold value of monitoring value of sexual contaminant, S₂Is a second threshold value of the monitoring value of the soluble pollutant, S₃A third threshold value for a soluble contaminant;

In another embodiment, the computer program when executed by the processor further performs the steps of: when V is₁Greater than S₂And is less than S₃According to T₁、T₂、V₁、S₁、S₂And calculating a score of the first monitoring event by using the first constant;

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the supplied coolant of the two-loop system during a second monitoring time period, and acquiring a monitoring value of suspended iron in the supplied coolant.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to T₃、 T₄、V₂And S₄Calculating a score for the second monitoring event;

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the coolant of the primary circuit system during a third monitoring period, and acquiring a monitoring value of lithium and a monitoring value of hydrogen in the coolant of the primary circuit system.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to T₅、 T₆Calculating a score of a third monitoring event by using the third constant and the fourth constant;

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the waste coolant of the two-loop system in the fourth monitoring time period, and acquiring a monitoring value of sodium in the waste coolant.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to S₅、 T₇、T₈、V₃And S₆Calculating a score for the fourth monitoring event;

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the coolant of the primary loop system during a fifth monitoring period, and acquiring the effective specific activity of cobalt-58, the effective specific activity of cobalt-60 and the monitored value of zinc in the coolant of the primary loop system.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to V₄、 V₅、V₆、V₇、V₈And V₉Calculating a score for a fifth monitoring event;

In another embodiment, the computer program when executed by the processor further performs the steps of: and monitoring the water tank coolant of the primary loop system and the replenishment coolant of the secondary loop system within a sixth monitoring time period, and acquiring a monitoring value of dissolved oxygen in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the primary loop system, a monitoring value of sulfate in the water tank coolant of the primary loop system, a monitoring value of sodium in the water tank coolant of the primary loop system, a monitoring value of chloride in the water tank coolant of the secondary loop system and a monitoring value of sulfate in the water tank coolant of the secondary loop system.

In another embodiment, the computer program when executed by the processor further performs the steps of: according to T_9、 T_10、V_10、S_7、S_8、S_9、Calculating the score of a sixth monitoring event by using a fifth constant and a sixth constant;

In another embodiment, the computer program when executed by the processor further performs the steps of: when V is₁₀When the value is greater than the eighth monitoring value threshold value and less than the ninth monitoring value threshold value, according to T_9、T_10、V_10、S_7、S₈And calculating a score for the sixth monitoring event by a fifth constant; when V is₁₀When the value is larger than the ninth monitoring value threshold value, according to T_9、T_10、V_10、 S_7、S_8、S_9、The fifth constant and the sixth constant calculate a score for the sixth monitoring event.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), for example.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A chemical efficiency control method for a nuclear power plant, comprising:

determining monitored values of a plurality of compounds in the coolant of the nuclear power plant in response to a chemical efficiency evaluation instruction triggered by a user, and judging whether the monitored values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop system of the nuclear power plant and a secondary loop system of the nuclear power plant;

if the compounds with monitoring values exceeding the monitoring value threshold exist in the compounds, judging whether the monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the compounds; the monitoring event is used to limit the amount of compounds in the coolant;

if the abnormal monitoring events exist in the plurality of monitoring events, determining a chemical efficiency control strategy of the nuclear power station based on the abnormal monitoring events; the chemical efficiency control strategy is used for improving the chemical efficiency of the nuclear power plant.

2. The method of claim 1, further comprising:

calculating a score of the monitoring event, wherein the score is used for representing the probability of the monitoring event being abnormal;

determining a chemical efficacy score of the nuclear power plant according to a preset basis and the scores of the plurality of monitoring events;

outputting chemical efficiency prompt information; the chemical efficacy tip information is used to indicate the chemical efficacy score.

3. The method of claim 2, further comprising:

determining, from the monitored values for the plurality of compounds, a monitored value for a compound associated with each of the plurality of monitoring events.

4. The method of claim 3, wherein the plurality of monitoring events comprises: a first monitoring event for limiting a level of a soluble contaminant in the coolant,

the determining a monitored value for a compound associated with each of the plurality of monitoring events comprises:

monitoring the coolant of the primary loop system and the coolant of the secondary loop system during a first monitoring period, and acquiring a monitoring value of chloride in the coolant of the primary loop system, a monitoring value of sulfate in the coolant of the primary loop system, a monitoring value of fluoride in the coolant of the primary loop system, a monitoring value of sodium in the waste coolant of the secondary loop system, a monitoring value of chloride in the waste coolant of the secondary loop system, a monitoring value of sulfate in the waste coolant of the secondary loop system, and a monitoring value of dissolved oxygen in the supplied coolant of the secondary loop system.

5. The method of claim 4, wherein said determining whether a plurality of monitored events of the nuclear power plant are abnormal based on the monitored values of the plurality of chemical compounds comprises:

according to T₁、T₂、V₁、S₁、S₂、S₃Calculating the score of the first monitoring event by using a first constant and a second constant;

wherein, T₁For the first monitoring duration, T₂A cumulative first time period, V, for a monitored value of the soluble contaminant between a first monitored value threshold and a second monitored value threshold₁For the actual value monitored for said soluble contaminants, when V₁Greater than S₃When, V₁Get S₃，S₁Is a first threshold value of the monitoring value of the soluble contaminant, S₂Is a second threshold value of the monitoring value of the soluble contaminant, S₃A third threshold value for the value of the soluble contaminant;

6. The method of claim 5, wherein the method is according to T₁、T₂、V₁、S₁、S₂、S₃Calculating a score for the first monitoring event with a first constant and a second constant, comprising:

when V is₁Greater than S₂And is less than S₃According to T₁、T₂、V₁、S₁、S₂And calculating a score of the first monitoring event by a first constant;

7. The method of claim 3, wherein the plurality of monitoring events comprises: a second monitoring event for limiting the content of metal oxides in the coolant,

and monitoring the supplied coolant of the two-loop system in a second monitoring time period, and acquiring a monitoring value of suspended iron in the supplied coolant.

8. The method of claim 7, wherein said determining whether a plurality of monitored events of the nuclear power plant are abnormal based on the monitored values of the plurality of chemical compounds comprises:

wherein, T₃For the second monitoring duration, T₄The accumulated second time length V is that the monitoring value of the suspended iron exceeds a fourth monitoring value threshold value in the second monitoring time length₂Is the maximum monitoring value, S, of the suspended iron in the second time period₄A fourth monitoring value threshold value of the suspended iron;

9. The method of claim 3, wherein the plurality of monitoring events comprises: a third monitoring event for limiting the amount of lithium and the amount of hydrogen in the coolant,

and monitoring the coolant of the primary circuit system during a third monitoring period, and acquiring the monitoring value of the lithium and the monitoring value of the hydrogen in the coolant of the primary circuit system.

10. The method of claim 9, wherein said determining whether a plurality of monitored events of the nuclear power plant are abnormal based on the monitored values of the plurality of chemical compounds comprises:

according to T₅、T₆Calculating a score of the third monitoring event by using a third constant and a fourth constant;

wherein, T₅To be at the thirdThe monitoring value of the lithium in the monitoring time exceeds the accumulated third time of the preset first monitoring value range, T₆The accumulated fourth time length is that the monitoring value of the hydrogen exceeds the preset second monitoring value range in the third monitoring time length;

11. The method of claim 3, wherein the plurality of monitoring events comprises: a fourth monitoring event for limiting the amount of sodium in the coolant,

and monitoring the waste coolant of the two-loop system in a fourth monitoring time period, and acquiring the monitoring value of the sodium in the waste coolant.

12. The method of claim 11, wherein said determining if a plurality of monitored events of the nuclear power plant are anomalous based on the monitored values of the plurality of chemical compounds comprises:

wherein S is₅Is the fifth monitoring value threshold of sodium, S₆Is the sixth monitoring value threshold, T, of the sodium₇For the fourth monitoring period, T₈A cumulative third time period, V, for the monitored value of sodium to exceed a fifth monitored value threshold within the fourth monitored time period₃Is the maximum monitoring value of the sodium in the third time period, when V₃Greater than S₆When, V₃Get S₆；

13. The method of claim 3, wherein the plurality of monitoring events comprises: a fifth monitoring event for limiting the content of radioactive species in the coolant,

and monitoring the coolant of the primary circuit system during a fifth monitoring period, and acquiring the effective specific activity of cobalt-58, the effective specific activity of cobalt-60 and the monitoring value of zinc in the coolant of the primary circuit system.

14. The method of claim 13, wherein said determining if a plurality of monitored events of the nuclear power plant are anomalous based on the monitored values of the plurality of chemical compounds comprises:

according to V₄、V₅、V₆、V₇、V₈And V₉Calculating a score for the fifth monitoring event;

wherein, V₄Is the minimum effective specific activity, V, of the cobalt-58 during the fifth monitoring period₅Is the maximum effective specific activity, V, of the cobalt-58 during the fifth monitoring period₆Is the minimum effective specific activity, V, of the cobalt-60 during the fifth monitoring period₇Is the maximum effective specific activity, V, of the cobalt-60 over a fifth monitoring period₈Is the minimum monitoring value, V, of the zinc within a fifth monitoring period₉The maximum monitoring value of the zinc in a fifth monitoring time length is obtained;

15. The method of claim 3, wherein the plurality of monitoring events comprises: a sixth monitoring event for limiting the level of impurities in the coolant,

and monitoring the water tank coolant of the primary loop system and the replenishment coolant of the secondary loop system within a sixth monitoring time period, and acquiring a monitored value of dissolved oxygen in the water tank coolant of the primary loop system, a monitored value of sodium in the water tank coolant of the primary loop system, a monitored value of chloride in the water tank coolant of the primary loop system, a monitored value of sulfate in the water tank coolant of the primary loop system, a monitored value of sodium in the water tank coolant of the primary loop system, a monitored value of chloride in the water tank coolant of the secondary loop system and a monitored value of sulfate in the water tank coolant of the secondary loop system.

16. The method of claim 15, wherein said determining if a plurality of monitored events of the nuclear power plant are anomalous based on the monitored values of the plurality of chemical compounds comprises:

according to T_9、T_10、V_10、S_7、S_8、S_9、Calculating a score of the sixth monitoring event by a fifth constant and a sixth constant;

wherein, T₉For the sixth monitoring period, T₁₀A cumulative fourth time period V for the impurity to be at the seventh monitoring value threshold and the eighth monitoring value threshold within the sixth monitoring time period₁₀Is the maximum monitoring value of the impurity within a fourth time period, S₇Is a seventh threshold value of the monitoring value of the impurity, S₈Is the eighth threshold value of the monitoring value of the impurity, S₉A ninth monitoring value threshold for the impurity;

17. The method of claim 16, wherein the function is T_9、T_10、V_10、S_7、S_8、S_9、Calculating the sixth monitoring event using a fifth constant and a sixth constantThe scoring of (1) comprises:

when V is₁₀When the value is greater than the eighth monitoring value threshold value and less than the ninth monitoring value threshold value, according to T_9、T_10、V_10、S_7、S₈And calculating a score for the sixth monitoring event by a fifth constant;

when V is₁₀When the value is larger than the ninth monitoring value threshold value, according to T_9、T_10、V_10、S_7、S_8、S_9、A fifth constant and a sixth constant calculate a score for the sixth monitoring event.

18. A chemical efficiency control apparatus for a nuclear power plant, the apparatus comprising:

the determining and judging module is used for responding to a chemical efficiency evaluation instruction triggered by a user, determining the monitored values of a plurality of compounds in the coolant of the nuclear power station, and judging whether the monitored values of the plurality of compounds exceed corresponding threshold values; the coolant is placed in a primary loop system of the nuclear power plant and a secondary loop system of the nuclear power plant;

the determining and judging module is further used for judging whether the monitoring events of the nuclear power station are abnormal or not according to the monitoring values of the compounds if the compounds with the monitoring values exceeding the monitoring value threshold exist in the compounds; the monitoring event is used to limit the amount of compounds in the coolant;

19. A chemical performance control apparatus of a nuclear power plant, the apparatus comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program implements the steps of the method of any one of claims 1 to 17.

20. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 17.