CN114369849B - Method and device for monitoring health degree of electrolytic cell and electrolytic cell monitoring system - Google Patents
Method and device for monitoring health degree of electrolytic cell and electrolytic cell monitoring system Download PDFInfo
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- 230000036541 health Effects 0.000 title claims abstract description 134
- 238000012544 monitoring process Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000004458 analytical method Methods 0.000 claims description 83
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 56
- 239000001257 hydrogen Substances 0.000 claims description 54
- 229910052739 hydrogen Inorganic materials 0.000 claims description 54
- 238000001514 detection method Methods 0.000 claims description 47
- 238000004519 manufacturing process Methods 0.000 claims description 43
- 230000002159 abnormal effect Effects 0.000 claims description 16
- 230000005484 gravity Effects 0.000 claims description 16
- 238000012806 monitoring device Methods 0.000 claims description 13
- 230000008439 repair process Effects 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005868 electrolysis reaction Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 9
- 238000012423 maintenance Methods 0.000 abstract description 11
- 238000007405 data analysis Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
- C25B15/023—Measuring, analysing or testing during electrolytic production
- C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
- C25B15/027—Temperature
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automation & Control Theory (AREA)
- Analytical Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a method and a device for monitoring the health degree of an electrolytic cell and a monitoring system of the electrolytic cell. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
Description
Technical Field
The invention relates to the field of data processing, in particular to a method and a device for monitoring the health degree of an electrolytic cell and an electrolytic cell monitoring system.
Background
In a water electrolysis hydrogen production system, an electrolytic tank is a core component. The health of the electrolytic tank can influence the hydrogen production efficiency of the water electrolysis hydrogen production system. Therefore, in order to ensure the hydrogen production efficiency of the electrolytic water hydrogen production system, the health of the electrolytic tank needs to be monitored.
At present, the health degree of the electrolytic tank cannot be directly monitored by adding a sensor in the electrolytic tank due to the working characteristics of high current, high power and the like. Therefore, how to monitor the health of the electrolytic cell is a technical problem that needs to be solved by the person skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a method and apparatus for monitoring the health of an electrolytic cell and a monitoring system for an electrolytic cell, so as to solve the problem of monitoring the health of an electrolytic cell.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for monitoring the health of an electrolytic cell, comprising:
acquiring working parameters and temperature values of the electrolytic cells with different detection periods, and generating corresponding relations between the working parameters and the temperature values;
acquiring a reference corresponding relation between a preset temperature and the working parameters;
carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result;
and determining an electrolytic tank health monitoring result corresponding to the data difference analysis result.
Optionally, the operating parameter comprises a resistance value of the electrolyzer; the method for acquiring the working parameters of the electrolytic cell with different detection periods comprises the following steps:
obtaining voltage values and current values of electrolytic cells with different detection periods;
and calculating the ratio of the voltage value to the current value in different detection periods and taking the ratio as the resistance value of the electrolytic cell in different detection periods.
Optionally, the operating parameter comprises hydrogen production; the method for acquiring the working parameters of the electrolytic cell with different detection periods comprises the following steps:
the hydrogen production of the electrolyzer with different detection periods is obtained.
Optionally, generating the correspondence between the operating parameter and the temperature value includes:
according to the working parameters and the temperature values of the electrolytic cells with different detection periods, at least one working parameter corresponding to the same temperature value is obtained;
calculating an average value of the at least one working parameter and taking the average value as an updated working parameter corresponding to the temperature value;
and generating a corresponding relation between the working parameter and the temperature value based on the updated working parameter corresponding to the temperature value.
Optionally, obtaining a reference correspondence between a preset temperature and the working parameter includes:
acquiring a preset temperature point;
acquiring working parameters of the electrolytic tank under the condition that the temperature value of the electrolytic tank is the temperature point;
and generating a corresponding relation between the temperature point and the working parameter of the electrolytic tank corresponding to the temperature point, and taking the corresponding relation as a reference corresponding relation.
Optionally, performing data difference analysis on the working parameters at the same temperature on the corresponding relationship and the reference corresponding relationship to obtain a data difference analysis result, including:
for the temperature value in the corresponding relation, acquiring a working parameter value corresponding to the temperature value in the corresponding relation and a reference working parameter value corresponding to the temperature value in the reference corresponding relation;
judging whether a preset calculation result of the working parameter value and the reference working parameter value is within a preset value range or not to obtain a judgment result;
and based on the judging result, obtaining a judging result of whether the working parameter value corresponding to the temperature value is abnormal or not, and taking the judging result as a data difference analysis result.
Optionally, determining the monitoring result of the health degree of the electrolytic cell corresponding to the data difference analysis result includes:
determining the proportion value of the data difference analysis results with abnormal content in all the data difference analysis results;
and determining an electrolytic cell health monitoring result corresponding to the specific gravity value based on the corresponding relation between the specific gravity value and the electrolytic cell health.
Optionally, after determining the monitoring result of the health degree of the electrolytic cell corresponding to the data difference analysis result, the method further comprises:
calculating additional power consumption data and equipment repair data corresponding to the electrolytic bath health monitoring result;
and determining equipment restoration reference information according to the extra power consumption data and the equipment restoration data.
A monitoring device for the health of an electrolytic cell, comprising:
the relation generating module is used for acquiring working parameters and temperature values of the electrolytic cells in different detection periods and generating corresponding relation between the working parameters and the temperature values;
the relation acquisition module is used for acquiring a reference corresponding relation between a preset temperature and the working parameter;
the difference analysis module is used for carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result;
and the health degree analysis module is used for determining an electrolytic tank health degree monitoring result corresponding to the data difference analysis result.
An electrolytic cell monitoring system includes an electrolytic cell monitoring device for performing the above-described method of monitoring the health of an electrolytic cell.
Optionally, a temperature sensor is also included; the temperature sensor is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the temperature sensor is used for outputting a temperature value to the electrolytic cell monitoring equipment.
Optionally, the hydrogen production device also comprises a hydrogen production power supply; the hydrogen production power supply is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the hydrogen production power supply is used for outputting the voltage value and the current value of the electrolytic cell to the electrolytic cell monitoring equipment under the condition that the working parameters comprise the resistance value of the electrolytic cell.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a method and a device for monitoring the health of an electrolytic cell and a monitoring system of the electrolytic cell, wherein working parameters and temperature values of the electrolytic cell in different detection periods are obtained, corresponding relations between the working parameters and the temperature values are generated, a preset reference corresponding relation between the temperature and the working parameters is obtained, data difference analysis of the working parameters at the same temperature is carried out on the corresponding relation and the reference corresponding relation, a data difference analysis result is obtained, and the monitoring result of the health of the electrolytic cell corresponding to the data difference analysis result is determined. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an electrolytic cell monitoring system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for monitoring the health of an electrolytic cell according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for monitoring the health of an electrolytic cell according to an embodiment of the present invention;
FIG. 4 is a flow chart of another method for monitoring the health of an electrolytic cell according to an embodiment of the present invention;
FIG. 5 is a flow chart of another method for monitoring the health of an electrolytic cell according to an embodiment of the present invention;
FIG. 6 is a schematic view of a method for monitoring the health of an electrolytic cell according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a relationship between temperature, voltage and current according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a monitoring device for health of an electrolytic cell according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In a water electrolysis hydrogen production system, an electrolytic tank is a core component. The health of the electrolytic tank can influence the hydrogen production efficiency of the water electrolysis hydrogen production system. Therefore, in order to ensure the hydrogen production efficiency of the electrolytic water hydrogen production system, the health of the electrolytic tank needs to be monitored.
Currently, the health of an electrolytic cell cannot be directly monitored by adding a sensor inside the electrolytic cell due to the working characteristics of high current, high power, high temperature, high sealing, corrosiveness and the like. Therefore, how to monitor the health of the electrolytic cell is a technical problem that needs to be solved by the person skilled in the art.
Therefore, the inventor finds that the temperature of the electrolytic tank can change during the operation process of the electrolytic tank, and the temperature of the electrolytic tank can influence the characteristics of the current and voltage values of the electrolytic tank and the hydrogen yield of the hydrogen production process, namely, the temperature can influence the resistance value and the hydrogen yield of the electrolytic tank, and if the health degree of the electrolytic tank is abnormal, the resistance value and the hydrogen yield of the electrolytic tank can change. Therefore, the standard resistance value or hydrogen yield can be preset, then the current temperature value and the corresponding resistance value or hydrogen yield of the electrolytic cell are collected and compared with the standard resistance value or hydrogen yield, whether the resistance value or hydrogen yield at the temperature is abnormal or not is analyzed, and accordingly the health degree of the electrolytic cell is determined according to the abnormal result.
More specifically, working parameters and temperature values of the electrolytic cells in different detection periods are obtained, corresponding relations between the working parameters and the temperature values are generated, reference corresponding relations between preset temperatures and the working parameters are obtained, data difference analysis of the working parameters at the same temperature is carried out on the corresponding relations and the reference corresponding relations, data difference analysis results are obtained, and the electrolytic cell health monitoring results corresponding to the data difference analysis results are determined. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
Based on the foregoing, the embodiment of the invention provides a method for monitoring the health of an electrolytic cell, and an execution main body of the method for monitoring the health of the electrolytic cell may be an electrolytic cell monitoring device. Referring to fig. 1, may include:
s11, working parameters and temperature values of the electrolytic cells with different detection periods are obtained, and corresponding relations between the working parameters and the temperature values are generated.
In this embodiment, the operating parameters and temperature values of the electrolyzer may be measured during one day, e.g., 0.00-24.00, according to the test cycle.
The detection period may be once every preset time, such as 15 minutes, half an hour, or one hour. The collected operating parameter may be the resistance value or the hydrogen production. I.e. the temperature value and the resistance value (calculated by U (voltage), I (current)) are collected at preset time intervals, or the temperature value and the hydrogen production are collected.
The temperature value, U (voltage), I (current) and hydrogen yield in the scheme can be obtained by sampling a hardware circuit, and the temperature can be acquired by acquiring the U (voltage) and I (current) output by a hydrogen production power supply, the temperature can be acquired by a temperature sensor additionally arranged on a pipeline at the outlet of the electrolytic cell, and the hydrogen yield can be acquired by the electrolytic cell. The electrolyzer in this embodiment may be an electrolyzer in a pressure type alkaline water electrolysis hydrogen production system or an electrolyzer in a pressure type PEM water electrolysis hydrogen production system.
When the working parameters are the resistance values, the temperature and resistance values can be acquired by the electrolytic cell monitoring system of fig. 2. The electrolytic cell monitoring system comprises an electrolytic cell monitoring device, and can further comprise a temperature sensor and a hydrogen production power supply.
In fig. 2, the electrolyzer is operated to generate hydrogen and oxygen, and in order to detect the temperature and resistance value of the electrolyzer, temperature sensors are respectively connected with the electrolyzer and the electrolyzer monitoring device, and after the temperature sensors detect the temperature value of the electrolyzer, the temperature sensors are transmitted to the electrolyzer monitoring device.
The hydrogen production power supply is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment, and is used for outputting the voltage value and the current value of the electrolytic tank to the electrolytic tank monitoring equipment under the condition that the working parameters comprise the resistance value of the electrolytic tank.
The electrolytic cell monitoring device calculates a resistance value through a voltage value and a current value, and specifically, r=u/I. Wherein R is a resistance value, U is a voltage value, and I is a current value.
Acquiring the working parameters of the electrolytic cell with different detection periods when the working parameters comprise the resistance value of the electrolytic cell, wherein the working parameters comprise:
and obtaining the voltage value and the current value of the electrolytic cell in different detection periods, calculating the ratio of the voltage value to the current value in different detection periods, and taking the ratio as the resistance value of the electrolytic cell in different detection periods.
When the operating parameters include hydrogen production, acquiring the operating parameters of the electrolytic cell with different detection periods, wherein the operating parameters include: the hydrogen production of the electrolyzer with different detection periods is obtained.
The temperature values and corresponding operating parameters in this embodiment may be stored in a set storage area, such as a database.
And generating a corresponding relation between the working parameters and the temperature values of the electrolytic cells in different detection periods after the working parameters and the temperature values of the electrolytic cells in different detection periods are obtained.
Specifically, referring to fig. 3, generating the correspondence between the operating parameter and the temperature value may include:
s21, according to the working parameters and the temperature values of the electrolytic cells in different detection periods, at least one working parameter corresponding to the same temperature value is obtained.
In practical application, after the working parameters and temperature values of the electrolytic cells in different detection periods are obtained, the temperature value of the electrolytic cell in at least one detection period is the same in one day, and the temperature value at 9 am may be the same as the temperature value at 5 pm. At this time, the condition that different detection periods correspond to the same temperature value occurs, and then at least one working parameter corresponding to the same temperature value occurs.
To avoid this, in the embodiment of the present invention, the average operation is performed on at least one operating parameter corresponding to the same temperature value, so that the same temperature only corresponds to one operating parameter.
Therefore, in this embodiment, it is necessary to analyze the temperature values of different detection periods, and if the same temperature value exists, at least one working parameter corresponding to the same temperature value is selected.
S22, calculating an average value of the at least one working parameter, and taking the average value as the updated working parameter corresponding to the temperature value.
Specifically, an average value of at least one working parameter is obtained and used as an updated working parameter corresponding to the temperature value, so that the detected temperature value can be ensured to only correspond to one working parameter.
It should be noted that, if a temperature value only appears once in all detection periods, the average value is not required to be obtained, and the corresponding working parameter is directly used as the updated working parameter.
S23, generating a corresponding relation between the working parameter and the temperature value based on the updated working parameter corresponding to the temperature value.
Specifically, in this step, the temperature value is directly in one-to-one correspondence with the updated working parameter, that is, the correspondence between the working parameter and the temperature value. In addition, the temperature value and the updated working parameter can be drawn into a curve, the horizontal axis is the temperature, and the vertical axis is the updated working parameter.
S12, acquiring a reference corresponding relation between the preset temperature and the working parameter.
In this embodiment, the reference correspondence between the preset temperature and the working parameter is considered as the correspondence between the standard temperature and the working parameter, and the correspondence is established when the electrolytic cell is in a higher health degree.
Referring to fig. 4, step S12 may include:
s31, acquiring a preset temperature point.
In this embodiment, the temperature interval of the electrolyzer, such as 1℃to 100℃or 50℃to 90℃may be determined by analysis based on the temperature of the electrolyzer over a period of time. In this embodiment, taking 50 to 90℃as an example, one temperature point may be set at 1℃each time, that is, the preset temperature point in this embodiment is 50 ℃, 51 ℃, 52 ℃, 53 ℃, 54 ℃, … … ℃, 88 ℃, 89 ℃, 90 ℃.
S32, under the condition that the temperature value of the electrolytic tank is the temperature point, acquiring the working parameters of the electrolytic tank.
And monitoring the temperature of the electrolytic tank, and monitoring the working parameters of the electrolytic tank when the temperature value of the electrolytic tank is the temperature point.
And obtaining the working parameters of the electrolytic tank according to the mode for each preset temperature value.
If a plurality of identical temperature points appear in the same day or days, the working parameters of the identical temperature points are averaged and used as the working parameters of the identical temperature points.
When the operating parameter is a resistance value, the average value of the resistance may be obtained by calculating R from a plurality of U, I obtained by calculation according to the formula r=u/I, and then obtaining the average value of R.
It is also possible to calculate the sum of U and I and take the value of Σu/n Σi as the average value of the resistance. Wherein n is the number of the same temperature value.
When the operating parameter is hydrogen production, the average value of the detected hydrogen production is directly calculated, and the average value is used as the operating parameter of the temperature value.
The temperature values and corresponding operating parameters in this embodiment may be stored in a set storage area, such as a database.
S33, generating a corresponding relation between the temperature point and the working parameter of the electrolytic tank corresponding to the temperature point, and taking the corresponding relation as a reference.
In the process of generating the corresponding relationship, please refer to the corresponding description, the generated corresponding relationship is the reference corresponding relationship.
S13, carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result.
In this embodiment, whether the values of the working parameters at the same temperature have differences or not is mainly analyzed in the corresponding relation and the reference corresponding relation, and if the differences are large, the two are considered to have differences. And then analyzing the difference result of the working parameters corresponding to each temperature value in the corresponding relation, and comprehensively obtaining the difference result of the working parameters of the whole temperature value, namely a data difference analysis result.
Specifically, referring to fig. 5, step S13 may include:
s41, for the temperature value in the corresponding relation, acquiring a working parameter value corresponding to the temperature value in the corresponding relation and a reference working parameter value corresponding to the temperature value in the reference corresponding relation.
In this embodiment, each temperature value in the corresponding relationship is used to obtain a working parameter value corresponding to the temperature value in the corresponding relationship and a reference working parameter value corresponding to the temperature value in the reference corresponding relationship.
S42, judging whether a preset calculation result of the working parameter value and the reference working parameter value is within a preset value range, and obtaining a judgment result.
The preset calculation result in this embodiment may be a ratio or a difference, and the ratio or the difference between the working parameter value and the reference working parameter value is calculated, and then whether the ratio or the difference is within a preset value range is set, where the preset value range may be 0.8-1.2 when the ratio is the ratio, and the preset value range may be-0.2-0.2 when the ratio is the difference.
If the two values are within the preset value range, the working parameter value is indicated to be close to the reference working parameter value, and the reference working parameter value is acquired under the condition that the health degree of the electrolytic cell is higher, namely, the health degree of the electrolytic cell is higher, better and in a healthier state.
If the two values are not in the preset value range, the working parameter value is not close to the reference working parameter value, and the reference working parameter value is acquired under the condition that the health degree of the electrolytic cell is high, namely, the health degree of the electrolytic cell is low, poor and unhealthy.
The judgment result in this embodiment is two, one is within the preset value range and the other is not within the preset value range.
S42, based on the judging result, judging whether the working parameter value corresponding to the temperature value is abnormal or not is obtained, and the judging result is used as a data difference analysis result.
In this embodiment, if the determination result is "within the preset value range", the data difference analysis result is "normal".
In this embodiment, if the determination result is "not within the preset value range", the data difference analysis result is "abnormal".
S14, determining an electrolytic tank health monitoring result corresponding to the data difference analysis result.
In practical application, the monitoring result of the health degree of the electrolytic cell is determined according to the proportion of the abnormal data difference analysis result to all the data difference analysis results.
Specifically, step S14 may include:
1) And determining the proportion value of the data difference analysis result with abnormal content in all the data difference analysis results.
Specifically, the number of data difference analysis results with abnormal content and the number of all data difference analysis results are determined, and the ratio of the number of data difference analysis results and the number of data difference analysis results is calculated to be used as the proportion value of the data difference analysis results with abnormal content to all data difference analysis results.
2) And determining an electrolytic cell health monitoring result corresponding to the specific gravity value based on the corresponding relation between the specific gravity value and the electrolytic cell health.
In this embodiment, the correspondence between the specific gravity value and the health of the electrolytic cell is preset, for example:
the specific gravity value is more than or equal to 90%, and the monitoring result of the health degree of the electrolytic cell is healthy;
the specific gravity value is less than or equal to 70 and less than 90 percent, and the monitoring result of the health degree of the electrolytic cell is medium health;
the specific gravity value is less than or equal to 50 and less than 70 percent, and the monitoring result of the health degree of the electrolytic cell is general health;
the specific gravity value is less than 50%, and the monitoring result of the health degree of the electrolytic cell is unhealthy.
And after calculating the specific gravity value, obtaining an electrolytic cell health monitoring result corresponding to the specific gravity value according to the corresponding relation. If the monitoring result of the health degree of the electrolytic cell is general health or unhealthy, the alarm prompt can be given. The health degree of the electrolytic tank can be monitored according to the steps S11-S14 every day, and the operation reliability of the electrolytic tank is ensured.
In order for those skilled in the art to understand the present invention, an explanation will be made with reference to fig. 6 and 7. In this embodiment, taking the operating parameter as an example of a resistance value, the system temperature/volt-ampere characteristic analysis module of the monitoring device of the electrolytic cell obtains the U, I value of the electrolytic cell and the temperature TEMP, and obtains the temperature/volt-ampere characteristic (X1) through U, I, TEMP, and specifically, refer to fig. 7. At this time, the resistor R may be obtained by calculation based on U, I, a correspondence between R and TEMP is established, then, the prefabricated temperature/volt-ampere characteristic (X2) is obtained, the reference correspondence between R and TEMP is obtained, and the system temperature/volt-ampere characteristic comparison analysis module analyzes the resistance value of the same temperature in the two correspondence, and finally, the health degree Z of the electrolytic cell is obtained.
In another implementation manner of the present invention, after determining the monitoring result of the health degree of the electrolytic cell corresponding to the data difference analysis result, the method further includes:
and calculating extra power consumption data and equipment repair data corresponding to the electrolytic tank health monitoring result, and determining equipment repair reference information according to the extra power consumption data and the equipment repair data.
In this embodiment, when the health of the electrolytic cell is poor, the loss may be serious, for example, when the health of the electrolytic cell is general health, the loss may be increased by 20% and thus the cost may be increased by producing hydrogen gas of the same quality. At this time, additional loss and additional added cost can be calculated according to the current health of the electrolytic cell and used as additional power consumption data.
In addition, when the health degree of the electrolytic cell is poor, the mode of replacing the electrolytic cell and maintaining the electrolytic cell can be adopted, the cost of replacing the electrolytic cell and maintaining the electrolytic cell is calculated at the moment, and the specific calculation can be the cost of manually outputting equipment needing replacement or maintenance and equipment needing replacement or maintenance, and the total cost is calculated by the electrolytic cell monitoring equipment and is used as equipment repair data.
After the extra power consumption data and the equipment repair data corresponding to the health degree monitoring result of the electrolytic cell are calculated, the extra power consumption data and the equipment repair data are compared, smaller data are selected, if the extra power consumption data are smaller, the replacement or maintenance equipment can generate larger cost under the health degree, and at the moment, the electrolytic cell can be enabled to continue to work under the extra loss until the cost generated by the replacement or maintenance equipment is smaller than the extra power consumption data, and the equipment is replaced or maintained.
If the additional power consumption data is larger, it means that the replacement or maintenance equipment will generate smaller cost under the health condition, and at this time, the equipment can be replaced or maintained to reduce the cost and avoid the operation of the electrolytic cell under the unhealthy condition.
In this embodiment, the device repair reference information may be output to the user terminal, so that the user refers to the device repair reference information. After the analysis of the health degree of the electrolytic cell, the economic analysis can be carried out through the determined health degree of the electrolytic cell, the decision of energy consumption, unit consumption loss and loss caused by shutdown overhaul generated when the electrolytic cell operates under the health degree is determined, the basis is provided, and the loss is reduced.
In this embodiment, working parameters and temperature values of the electrolytic cells in different detection periods are obtained, corresponding relations between the working parameters and the temperature values are generated, a preset reference corresponding relation between the temperature and the working parameters is obtained, data difference analysis of the working parameters at the same temperature is performed on the corresponding relation and the reference corresponding relation, a data difference analysis result is obtained, and an electrolytic cell health monitoring result corresponding to the data difference analysis result is determined. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
Optionally, on the basis of the embodiment of the method for monitoring the health degree of the electrolytic tank, another embodiment of the present invention provides a device for monitoring the health degree of the electrolytic tank, referring to fig. 8, which may include:
the relation generating module 11 is used for acquiring working parameters and temperature values of the electrolytic cells in different detection periods and generating corresponding relation between the working parameters and the temperature values;
the relation acquisition module 12 is used for acquiring a reference corresponding relation between a preset temperature and the working parameter;
the difference analysis module 13 is used for carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result;
and the health degree analysis module 14 is used for determining the monitoring result of the electrolytic cell health degree corresponding to the data difference analysis result.
Further, the operation parameters include resistance values of the electrolytic cells, and when the relation generating module 11 is configured to obtain the operation parameters of the electrolytic cells with different detection periods, the relation generating module is specifically configured to:
and obtaining the voltage value and the current value of the electrolytic cell in different detection periods, calculating the ratio of the voltage value to the current value in different detection periods, and taking the ratio as the resistance value of the electrolytic cell in different detection periods.
Further, the operating parameters include hydrogen production; the relationship generating module 11 is configured to, when acquiring the operation parameters of the electrolytic cell with different detection periods, specifically:
the hydrogen production of the electrolyzer with different detection periods is obtained.
Further, when the relationship generating module 11 is configured to generate the correspondence between the operating parameter and the temperature value, the relationship generating module is specifically configured to:
according to the working parameters and the temperature values of the electrolytic cells in different detection periods, at least one working parameter corresponding to the same temperature value is obtained, the average value of the at least one working parameter is calculated, the average value is used as the updated working parameter corresponding to the temperature value, and the corresponding relation between the working parameter and the temperature value is generated based on the updated working parameter corresponding to the temperature value.
Further, the relationship acquisition module 12 includes:
the temperature point acquisition sub-module is used for acquiring a preset temperature point;
the parameter acquisition submodule is used for acquiring working parameters of the electrolytic tank under the condition that the temperature value of the electrolytic tank is the temperature point;
and the relation generating sub-module is used for generating the corresponding relation between the temperature point and the working parameter of the electrolytic tank corresponding to the temperature point and taking the corresponding relation as a reference corresponding relation.
Further, the variance analysis module 13 includes:
the data acquisition sub-module is used for acquiring a working parameter value corresponding to the temperature value in the corresponding relation and a reference working parameter value corresponding to the temperature value in the reference corresponding relation for the temperature value in the corresponding relation;
the judging submodule is used for judging whether a preset calculation result of the working parameter value and the reference working parameter value is in a preset value range or not to obtain a judging result;
and the data difference analysis sub-module is used for obtaining a judging result of whether the working parameter value corresponding to the temperature value is abnormal or not based on the judging result and taking the judging result as a data difference analysis result.
Further, the health analysis module 14 is specifically configured to:
determining the specific gravity value of the data difference analysis result with abnormal content accounting for all the data difference analysis results, and determining the monitoring result of the health degree of the electrolytic cell corresponding to the specific gravity value based on the corresponding relation between the specific gravity value and the health degree of the electrolytic cell.
Further, the method further comprises the following steps:
the reference information determining submodule is used for calculating extra power consumption data and equipment repair data corresponding to the electrolytic bath health monitoring result, and determining equipment repair reference information according to the extra power consumption data and the equipment repair data.
In this embodiment, working parameters and temperature values of the electrolytic cells in different detection periods are obtained, corresponding relations between the working parameters and the temperature values are generated, a preset reference corresponding relation between the temperature and the working parameters is obtained, data difference analysis of the working parameters at the same temperature is performed on the corresponding relation and the reference corresponding relation, a data difference analysis result is obtained, and an electrolytic cell health monitoring result corresponding to the data difference analysis result is determined. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
It should be noted that, in the working process of each module and sub-module in this embodiment, please refer to the corresponding description in the above embodiment, and the description is omitted here.
Optionally, on the basis of the embodiment of the method and the device for monitoring the health degree of the electrolytic tank, another embodiment of the invention provides an electrolytic tank monitoring system, which comprises an electrolytic tank monitoring device for executing the method for monitoring the health degree of the electrolytic tank.
Further, a temperature sensor is also included; the temperature sensor is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the temperature sensor is used for outputting a temperature value to the electrolytic cell monitoring equipment.
Further, the hydrogen production device also comprises a hydrogen production power supply; the hydrogen production power supply is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the hydrogen production power supply is used for outputting the voltage value and the current value of the electrolytic cell to the electrolytic cell monitoring equipment under the condition that the working parameters comprise the resistance value of the electrolytic cell.
The specific working processes of the electrolytic tank monitoring device, the hydrogen production power supply and the temperature sensor in this embodiment are described with reference to the corresponding descriptions in the above embodiments.
In this embodiment, working parameters and temperature values of the electrolytic cells in different detection periods are obtained, corresponding relations between the working parameters and the temperature values are generated, a preset reference corresponding relation between the temperature and the working parameters is obtained, data difference analysis of the working parameters at the same temperature is performed on the corresponding relation and the reference corresponding relation, a data difference analysis result is obtained, and an electrolytic cell health monitoring result corresponding to the data difference analysis result is determined. In the invention, the health degree of the electrolytic tank is obtained by analyzing the working parameters corresponding to the temperature, so that the problem that the health degree of the electrolytic tank needs to be monitored is solved. In addition, the working parameters and the temperature values detected by the method are easy-to-detect data, and the health degree of the electrolytic tank is obtained through the easy-to-detect data analysis, so that the determination mode of the health degree of the electrolytic tank is simplified. In addition, after the health degree of the electrolytic tank is detected, the health degree can also provide a reference basis for the maintenance and replacement of the subsequent electrolytic tank.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. A method for monitoring the health of an electrolytic cell, comprising:
acquiring working parameters and temperature values of the electrolytic cells with different detection periods, and generating corresponding relations between the working parameters and the temperature values; the electrolytic tank comprises an electrolytic tank of a pressure type alkaline water electrolysis hydrogen production system or an electrolytic tank of a pressure type PEM water electrolysis hydrogen production system, and the working parameters comprise the resistance value or hydrogen gas yield of the electrolytic tank;
acquiring a reference corresponding relation between a preset temperature and the working parameters; the reference corresponding relation is established when the health degree of the electrolytic tank is higher than a preset value;
carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result;
determining an electrolytic cell health monitoring result corresponding to the data difference analysis result;
performing data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result, wherein the data difference analysis result comprises:
for the temperature value in the corresponding relation, acquiring a working parameter value corresponding to the temperature value in the corresponding relation and a reference working parameter value corresponding to the temperature value in the reference corresponding relation;
judging whether a preset calculation result of the working parameter value and the reference working parameter value is within a preset value range or not to obtain a judgment result;
and based on the judging result, obtaining a judging result of whether the working parameter value corresponding to the temperature value is abnormal or not, and taking the judging result as a data difference analysis result.
2. The monitoring method according to claim 1, wherein when the operation parameter includes a resistance value of the electrolytic cell, acquiring the operation parameters of the electrolytic cell of different detection periods includes:
obtaining voltage values and current values of electrolytic cells with different detection periods;
and calculating the ratio of the voltage value to the current value in different detection periods and taking the ratio as the resistance value of the electrolytic cell in different detection periods.
3. The monitoring method according to claim 1, wherein when the operating parameter includes hydrogen production, acquiring operating parameters of the electrolytic cell for different detection periods comprises:
the hydrogen production of the electrolyzer with different detection periods is obtained.
4. The monitoring method according to claim 1, wherein generating the correspondence between the operating parameter and the temperature value comprises:
according to the working parameters and the temperature values of the electrolytic cells with different detection periods, at least one working parameter corresponding to the same temperature value is obtained;
calculating an average value of the at least one working parameter and taking the average value as an updated working parameter corresponding to the temperature value;
and generating a corresponding relation between the working parameter and the temperature value based on the updated working parameter corresponding to the temperature value.
5. The method according to claim 1, wherein obtaining a reference correspondence between a preset temperature and the operating parameter comprises:
acquiring a preset temperature point;
acquiring working parameters of the electrolytic tank under the condition that the temperature value of the electrolytic tank is the temperature point;
and generating a corresponding relation between the temperature point and the working parameter of the electrolytic tank corresponding to the temperature point, and taking the corresponding relation as a reference corresponding relation.
6. The monitoring method according to claim 1, wherein determining the cell health monitoring result corresponding to the data difference analysis result comprises:
determining the proportion value of the data difference analysis results with abnormal content in all the data difference analysis results;
and determining an electrolytic cell health monitoring result corresponding to the specific gravity value based on the corresponding relation between the specific gravity value and the electrolytic cell health.
7. The monitoring method according to claim 1, further comprising, after determining the cell health monitoring result corresponding to the data difference analysis result:
calculating additional power consumption data and equipment repair data corresponding to the electrolytic bath health monitoring result;
and determining equipment restoration reference information according to the extra power consumption data and the equipment restoration data.
8. A monitoring device for the health of an electrolytic cell, comprising:
the relation generating module is used for acquiring working parameters and temperature values of the electrolytic cells in different detection periods and generating corresponding relation between the working parameters and the temperature values; the electrolytic tank comprises an electrolytic tank of a pressure type alkaline water electrolysis hydrogen production system or an electrolytic tank of a pressure type PEM water electrolysis hydrogen production system, and the working parameters comprise the resistance value or hydrogen gas yield of the electrolytic tank;
the relation acquisition module is used for acquiring a reference corresponding relation between a preset temperature and the working parameter; the reference corresponding relation is established when the health degree of the electrolytic tank is higher than a preset value;
the difference analysis module is used for carrying out data difference analysis on the working parameters at the same temperature on the corresponding relation and the reference corresponding relation to obtain a data difference analysis result;
the health degree analysis module is used for determining an electrolytic tank health degree monitoring result corresponding to the data difference analysis result;
the variance analysis module includes:
the data acquisition sub-module is used for acquiring a working parameter value corresponding to the temperature value in the corresponding relation and a reference working parameter value corresponding to the temperature value in the reference corresponding relation for the temperature value in the corresponding relation;
the judging submodule is used for judging whether a preset calculation result of the working parameter value and the reference working parameter value is in a preset value range or not to obtain a judging result;
and the data difference analysis sub-module is used for obtaining a judging result of whether the working parameter value corresponding to the temperature value is abnormal or not based on the judging result and taking the judging result as a data difference analysis result.
9. An electrolytic cell monitoring system comprising an electrolytic cell monitoring device for performing the method of monitoring the health of an electrolytic cell according to any one of claims 1 to 7.
10. The electrolyzer monitoring system of claim 9, further comprising a temperature sensor; the temperature sensor is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the temperature sensor is used for outputting a temperature value to the electrolytic cell monitoring equipment.
11. The electrolyzer monitoring system of claim 9, further comprising a hydrogen generation power source; the hydrogen production power supply is respectively connected with the electrolytic tank and the electrolytic tank monitoring equipment;
the hydrogen production power supply is used for outputting the voltage value and the current value of the electrolytic cell to the electrolytic cell monitoring equipment under the condition that the working parameters comprise the resistance value of the electrolytic cell.
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| WO2024069801A1 (en) * | 2022-09-28 | 2024-04-04 | 株式会社日立製作所 | Control device, control method, hydrogen production system, and electricity and hydrogen supply system |
| CN115522227A (en) * | 2022-09-30 | 2022-12-27 | 阳光电源股份有限公司 | Electrolytic bath working state monitoring method, system, controller and medium |
| CN118007188A (en) * | 2024-02-19 | 2024-05-10 | 太和气体（荆州）有限公司 | Chlorine production self-operation safety monitoring system based on data processing |
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