CN117587457A - Fault early warning system of PEM (PEM) water electrolysis hydrogen production equipment - Google Patents
Fault early warning system of PEM (PEM) water electrolysis hydrogen production equipment Download PDFInfo
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 205
- 239000001257 hydrogen Substances 0.000 title claims abstract description 205
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 205
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 156
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 79
- 238000012544 monitoring process Methods 0.000 claims abstract description 150
- 238000004458 analytical method Methods 0.000 claims abstract description 89
- 239000012528 membrane Substances 0.000 claims abstract description 17
- 230000008030 elimination Effects 0.000 claims abstract description 4
- 238000003379 elimination reaction Methods 0.000 claims abstract description 4
- 239000003792 electrolyte Substances 0.000 claims description 48
- 238000011156 evaluation Methods 0.000 claims description 45
- 238000001816 cooling Methods 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 30
- 230000002159 abnormal effect Effects 0.000 claims description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 229910052760 oxygen Inorganic materials 0.000 claims description 27
- 230000032683 aging Effects 0.000 claims description 22
- 238000013499 data model Methods 0.000 claims description 20
- 238000012795 verification Methods 0.000 claims description 18
- 238000004781 supercooling Methods 0.000 claims description 17
- 238000003745 diagnosis Methods 0.000 claims description 15
- 238000005192 partition Methods 0.000 claims description 14
- 230000007613 environmental effect Effects 0.000 claims description 13
- 238000004364 calculation method Methods 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- 230000009849 deactivation Effects 0.000 claims description 10
- 101100356682 Caenorhabditis elegans rho-1 gene Proteins 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 4
- 238000007405 data analysis Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010200 validation analysis Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
-
- 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
-
- 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
Abstract
The invention relates to the technical field of PEM (proton exchange membrane) water electrolysis hydrogen production equipment, in particular to a PEM water electrolysis hydrogen production equipment fault early warning system which is used for solving the problems that the fault early warning mode of the existing PEM water electrolysis hydrogen production equipment mainly depends on manual experience, so that the accuracy of fault analysis is low and the potential faults of the PEM water electrolysis hydrogen production equipment cannot be guaranteed to be accurately early warned. According to the invention, through real-time monitoring and analyzing of the running state and hydrogen production state of the PEM water electrolysis hydrogen production equipment, comprehensive monitoring and early warning of the equipment are realized, and corresponding measures are taken to conduct fault analysis and elimination, so that the fault risk of the equipment is clear, the stability and reliability of the equipment are improved, and the safety and high efficiency of the hydrogen production process are ensured.
Description
Technical Field
The invention relates to the technical field of PEM water electrolysis hydrogen production equipment, in particular to a fault early warning system of PEM water electrolysis hydrogen production equipment.
Background
With the increasing demand for energy and the popularity of environmental protection, hydrogen energy has received great attention as a clean, efficient form of energy. The PEM water electrolysis hydrogen production technology becomes one of the current mainstream hydrogen production methods due to the characteristics of high efficiency, strong flexibility and the like. However, in the PEM water electrolysis hydrogen production process, equipment failure is an important factor affecting hydrogen production efficiency and safety, so that timely and accurate recognition and early warning of the PEM water electrolysis hydrogen production equipment failure are very important.
At present, the mode of fault early warning for PEM electrolytic water hydrogen production equipment is still on the basis of the traditional rule. The traditional method often depends on manual experience, and as equipment faults are diversified and have certain randomness, and the traditional fault early warning method is difficult to combine and analyze the operation state and the hydrogen production state of the hydrogen production equipment, so that the accuracy of the fault analysis of the PEM water electrolysis hydrogen production equipment is lower, the accurate early warning of potential faults of the PEM water electrolysis hydrogen production equipment cannot be realized, and the stability of the PEM water electrolysis hydrogen production equipment is difficult to ensure.
In order to solve the above-mentioned defect, a technical scheme is provided.
Disclosure of Invention
The invention aims to provide a fault early warning system of PEM water electrolysis hydrogen production equipment.
The aim of the invention can be achieved by the following technical scheme: a fault early warning system of PEM water electrolysis hydrogen production equipment comprises a cloud server, a data acquisition unit, a cloud database, an electrolysis equipment analysis unit, a hydrogen production state analysis unit, a comprehensive judgment unit, a fault diagnosis early warning unit and a display terminal;
the data acquisition unit is used for acquiring electrolysis data parameters and hydrogen production data parameters of an electrolytic cell in the PEM water electrolysis hydrogen production equipment and sending various types of information to the cloud database for storage;
the cloud database is also used for storing an electrolysis partition judging table, an operating state judging table and a cooling system temperature adjusting data table;
the electrolysis equipment analysis unit is used for monitoring electrolysis data parameters of an electrolytic cell in the PEM water electrolysis hydrogen production equipment, analyzing the electrolysis running state of the electrolytic cell, outputting the running state grade of the electrolytic cell according to the electrolysis running state grade, and generating an equipment running good signal or an equipment running abnormal signal according to the running state grade output by the electrolytic cell;
the hydrogen production state analysis unit is used for monitoring hydrogen production data parameters of the PEM water electrolysis hydrogen production equipment in the current monitoring period, so as to analyze the hydrogen production state of the PEM water electrolysis hydrogen production equipment in the current monitoring period and output a hydrogen production state assessment good signal or a hydrogen production state assessment abnormal signal according to the hydrogen production data parameters;
the comprehensive judging unit judges type signals and hydrogen production state judging type signals according to the output equipment running state and performs fault comprehensive judging analysis on the two judging signals, so that potential fault risk signals or normal signals are generated;
the fault diagnosis early warning unit performs fault diagnosis early warning analysis on the PEM water electrolysis hydrogen production equipment according to the output potential fault risk signals, generates a cooling system fault warning signal or a circulating water insufficient supply warning signal or an environment temperature low warning signal, a proton exchange membrane aging warning signal and a catalyst deactivation warning signal according to the fault diagnosis early warning analysis, and displays and illustrates the fault warning signal or the circulating water insufficient supply warning signal or the environment temperature low warning signal through the display terminal.
Preferably, the monitoring of the electrolysis data parameters of the electrolytic cells in the PEM water electrolysis hydrogen production equipment comprises the following specific monitoring processes:
acquiring real-time electrolytic capacity of an electrolytic cell in PEM electrolytic water hydrogen production equipment, and performing comparison matching analysis on the real-time electrolytic capacity of the electrolytic cell and an electrolytic partition judgment table stored in a cloud database, thereby matching to obtain monitoring partition quantity of the electrolytic cell, and marking the monitoring partition quantity as W, wherein each real-time electrolytic capacity of the electrolytic cell corresponds to one monitoring partition quantity;
dividing the electrolytic cell into W monitoring areas in equal quantity according to the monitoring area dividing number and the real-time electrolytic capacity of the electrolytic cell, wherein the V space amount=the real-time electrolytic capacity/the monitoring area dividing number;
collecting the current of each monitoring area in the electrolytic cell at the same monitoring time point through a current sensor to obtain the current data value of each monitoring area in the electrolytic cell at the same monitoring time point, removing the maximum current data value and the minimum data value from each monitoring area, and carrying out average calculation on the current data value of each remaining monitoring area according to the formula:the current average characteristic value acv of the electrolytic cell at the same monitoring time point is output, wherein w is represented by the number of the remaining monitoring areas, cdv w* Current data values denoted as w-th monitoring region;
the temperature sensor is used for acquiring the temperature of electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point to obtain the temperature value of the electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point, the maximum electrolyte temperature value and the minimum electrolyte temperature value are removed from each monitoring area, the remaining electrolyte temperature values in each monitoring area are calculated averagely, and the method is based on the formulaThe average characteristic value atp of the electrolyte temperature of the electrolytic cell at the same monitoring time is output, wherein wd w* Electrolyte temperature values expressed as w-th monitoring zone;
the voltage value applied across the cell at the same monitoring time point is obtained by a voltage sensor and is noted as au.
Preferably, the analysis is performed on the electrolytic operation state of the electrolytic cell, and the specific analysis process is as follows:
acquiring current average characteristic values, electrolyte temperature average characteristic values and voltage values in electrolysis data parameters of an electrolytic cell in PEM water electrolysis hydrogen production equipment, sequentially acquiring reference data values of the current average characteristic values, the electrolyte temperature average characteristic values and the voltage values, and sequentially marking the reference data values as acv, atp and au;
and carrying out comprehensive calculation and analysis on three operation parameters of the electrolytic cell, and according to a set data model:outputting an operation evaluation index rex of an electrolytic cell of the PEM electrolytic water hydrogen production device, wherein deltaa is a comparison value of a difference value between a current average characteristic value and a reference data value thereof, deltab is a comparison value of a difference value between an electrolyte temperature average characteristic value and a reference data value thereof, deltac is a comparison value of a difference value between a voltage value and a reference data value thereof, and rho 1, rho 2 and rho 3 are weight factor coefficients;
comparing and matching the operation evaluation index of the electrolytic cell with an operation state judgment table stored in a cloud database, thereby obtaining operation state grades of the electrolytic cell, wherein each obtained operation evaluation index corresponds to one operation state grade, and the operation state grades comprise a top operation grade and a secondary operation grade;
if the operation state grade of the electrolytic cell is judged to be the superior operation grade, generating a device operation good signal; if the operating state level of the electrolytic cell is determined to be the secondary operating level, an equipment operation abnormality signal is generated.
Preferably, the monitoring of hydrogen production data parameters and the analysis of hydrogen production states of the PEM water electrolysis hydrogen production equipment in the current monitoring period comprise the following specific processes:
monitoring the hydrogen flow and the oxygen flow at each monitoring time point in the current monitoring period by a flow monitor to obtain hydrogen flow value and oxygen flow value at each monitoring time point in the current monitoring period, and respectively recording the hydrogen flow value and the oxygen flow value as lh i And ly i Where i is a set of several monitoring time points divided by the current monitoring period, and i=1, 2,3 … … n, n is the total number;
the hydrogen concentration sensor and the oxygen concentration sensor are used for respectively controlling the hydrogen concentration at each monitoring time point in the current monitoring periodThe degree and the oxygen concentration are monitored to obtain a hydrogen concentration value and an oxygen concentration value at each monitoring time point in the current monitoring period, and the hydrogen concentration value and the oxygen concentration value are respectively recorded as ndh i And ndy i ；
Substituting the hydrogen flow value, the oxygen flow value, the hydrogen concentration value and the oxygen concentration value in the hydrogen production data parameters acquired in the current monitoring time period into a preset data model, and according to the set data model:outputting a hydrogen production coefficient hpc of the PEM water electrolysis hydrogen production equipment in the current monitoring period, wherein mu is a conversion factor coefficient;
setting an evaluation comparison interval of hydrogen production coefficients, and substituting the hydrogen production coefficients of the PEM water electrolysis hydrogen production equipment in the current monitoring period into the preset evaluation comparison interval for comparison analysis;
if the hydrogen production coefficient is within the preset evaluation comparison interval, generating a hydrogen production state evaluation good signal, otherwise, if the hydrogen production coefficient is outside the preset evaluation comparison interval, generating a hydrogen production state evaluation abnormal signal.
Preferably, the fault comprehensive judgment analysis is performed on two types of judgment signals, and the specific analysis process is as follows:
simultaneously calling a device running state judging type signal and a hydrogen production state judging type signal of PEM electrolytic water hydrogen production device, wherein the device running state judging type signal respectively comprises a device running good signal and a device running abnormal signal, and the hydrogen production state judging type signal respectively comprises a hydrogen production state evaluation good signal and a hydrogen production state evaluation abnormal signal;
if the judging signals which are simultaneously output are the equipment operation abnormal signal and the hydrogen production state evaluation abnormal signal or the equipment operation good signal and the hydrogen production state evaluation abnormal signal or the equipment operation abnormal signal and the hydrogen production state evaluation good signal respectively, generating potential fault risk signals;
in other cases, the normal signal is generated.
Preferably, the fault diagnosis and early warning analysis are carried out on the PEM water electrolysis hydrogen production equipment, and the specific analysis process is as follows:
s1: the method comprises the steps of calling an electrolyte temperature average characteristic value atp of an electrolytic cell in PEM electrolytic water hydrogen production equipment, a reference data value atp corresponding to the electrolyte temperature average characteristic value, and a comparison value delta b of a difference value between the electrolyte temperature average characteristic value and the reference data value, substituting three items of data into a fault judgment data model for analysis, generating an overheat fault analysis signal if the atp-atp is more than 0 and the I-atp is more than delta b, triggering overheat fault elimination verification analysis operation, generating a cooling system fault warning signal or a circulating water insufficient warning signal according to the overheat fault analysis operation, classifying the cooling system fault warning signal or the circulating water insufficient warning signal into a warning signal group, and displaying and explaining the warning signal group through a display terminal;
if the condition that the att-att is less than 0 and the I is more than delta b is satisfied, generating a supercooling fault early warning signal, triggering supercooling fault removal verification analysis operation, generating a cooling system fault warning signal or an environment temperature lower warning signal according to the supercooling fault early warning signal or the environment temperature lower warning signal, classifying the cooling system fault warning signal or the environment temperature lower warning signal into a warning signal group, and displaying and explaining the warning signal group through a display terminal;
s2: the method comprises the steps of obtaining the moisture content, the current density value and the electrolytic pressure change value in an electrolytic cell, calibrating the moisture content, the current density value and the electrolytic pressure change value as hsl, md and ybz respectively, calculating and analyzing three data, and setting a data model:outputting a proton exchange membrane aging coefficient lhx, wherein δ1, δ2 and δ3 are correction factor coefficients of a moisture content, a current density value and an electrolytic pressure change value respectively;
setting an aging comparison threshold of the aging coefficient of the proton exchange membrane, comparing and analyzing the two items of data, generating a proton exchange membrane aging warning signal if the aging coefficient of the proton exchange membrane is greater than a preset aging comparison threshold, and displaying and explaining through a display terminal;
s3: setting a monitoring period, equally dividing the monitoring period into a plurality of sub-time points, acquiring hydrogen yield at each sub-time point, taking time as an abscissa, taking hydrogen yield as an ordinate, establishing a hydrogen yield two-dimensional coordinate system, and drawing the hydrogen yield at each sub-time point acquired in the monitoring period on the hydrogen yield two-dimensional coordinate system in a dot drawing manner, thereby acquiring a hydrogen yield broken line;
and calculating the total included angle between the hydrogen yield fold line and the horizontal line, if the total included angle is smaller than the comparison included angle beta, generating a catalyst deactivation warning signal, and displaying and explaining the catalyst deactivation warning signal through a display terminal.
Preferably, the specific processing procedure of the overheat fault removal verification analysis operation is as follows:
setting a thermal verification period, increasing the circulating water supply quantity of a circulating water supply system to a1 unit volume in the thermal verification period, acquiring an electrolyte temperature average characteristic value of the electrolytic cell after the thermal verification period is finished, and substituting the electrolyte temperature average characteristic value into a fault judgment data model for analysis;
if the overheat fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the overheat fault analysis signal is not output, generating a circulating water supply shortage warning signal.
Preferably, the supercooling fault removal verification analysis operation processes the following specific processes:
acquiring the environmental temperature of the environment where the electrolytic cell is located, setting an environmental temperature contrast value, and carrying out data analysis on the two items of data;
if the ambient temperature is less than the ambient temperature contrast value, the ambient temperature contrast value is differenced from the ambient temperature, so that an ambient temperature difference value is obtained;
comparing and matching the environmental temperature difference value with a cooling system temperature regulation data table stored in a cloud database, thereby obtaining a temperature regulation quantity of the cooling system, wherein each obtained environmental temperature difference value corresponds to one temperature regulation quantity, and the temperature of the cooling system under the temperature regulation quantity corresponding to the temperature regulation value;
after the temperature adjustment of the cooling system is completed, an average characteristic value of the electrolyte temperature of the electrolytic cell is obtained and substituted into a fault judgment data model for analysis;
if the supercooling fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the supercooling fault analysis signal is not output, generating a warning signal with lower ambient temperature.
The invention has the beneficial effects that:
according to the invention, through monitoring and analyzing the electrolytic process and hydrogen production state of the PEM electrolytic water hydrogen production equipment, the running state and hydrogen production state of the electrolytic cell are defined, and corresponding evaluation signals are output, so that the abnormal running or abnormal hydrogen production state of the equipment is discovered in time, and meanwhile, the basis is provided for subsequent fault diagnosis and early warning;
by combining a comprehensive judging and analyzing mode, the equipment operation judging state and the hydrogen production judging state are subjected to a total analysis, so that the overall operation condition of the equipment is accurately judged, and potential fault risks are recognized and prevented in advance;
performing fault diagnosis and early warning analysis operation according to the output potential fault risk signals, adopting a mode of data item-by-item analysis, model substitution calculation and data comparison analysis, and performing early warning analysis on faults of the PEM water electrolysis hydrogen production equipment respectively from a proton membrane aging layer, a catalyst deactivation layer and a temperature abnormality layer, so that timely diagnosis and early warning of the faults of the equipment are realized, and the reliability and safety of the equipment are improved;
in summary, through real-time monitoring and analyzing the running state and the hydrogen production state of the PEM water electrolysis hydrogen production equipment, comprehensive monitoring and early warning of the equipment are realized, and corresponding measures are taken to conduct fault analysis and elimination, so that the fault risk of the equipment is clear, the stability and the reliability of the equipment are improved, and the safety and the high efficiency of the hydrogen production process are ensured.
Drawings
The invention is further described below with reference to the accompanying drawings.
Fig. 1 is a system block diagram 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.
Referring to fig. 1, the invention discloses a fault early warning system of PEM water electrolysis hydrogen production equipment, which comprises a cloud server, a data acquisition unit, a cloud database, an electrolysis equipment analysis unit, a hydrogen production state analysis unit, a comprehensive judgment unit, a fault diagnosis early warning unit and a display terminal.
The data acquisition unit is used for acquiring electrolysis data parameters and hydrogen production data parameters of an electrolytic cell in the PEM water electrolysis hydrogen production equipment and sending various types of information to the cloud database for storage.
The cloud database is also used for storing an electrolysis partition judging table, an operating state judging table and a cooling system temperature adjusting data table.
The electrolysis equipment analysis unit is used for monitoring electrolysis data parameters of an electrolytic cell in the PEM water electrolysis hydrogen production equipment, and the specific monitoring process is as follows:
acquiring real-time electrolytic capacity of an electrolytic cell in PEM electrolytic water hydrogen production equipment, and performing comparison matching analysis on the real-time electrolytic capacity of the electrolytic cell and an electrolytic partition judgment table stored in a cloud database, thereby matching to obtain monitoring partition quantity of the electrolytic cell, and marking the monitoring partition quantity as W, wherein each real-time electrolytic capacity of the electrolytic cell corresponds to one monitoring partition quantity;
dividing the electrolytic cell into W monitoring areas in equal quantity according to the monitoring area dividing number and the real-time electrolytic capacity of the electrolytic cell, wherein the V space amount=the real-time electrolytic capacity/the monitoring area dividing number;
collecting the current of each monitoring area in the electrolytic cell at the same monitoring time point through a current sensor to obtain the current data value of each monitoring area in the electrolytic cell at the same monitoring time point, removing the maximum current data value and the minimum data value from each monitoring area, and collecting the current data value of each remaining monitoring areaAnd (3) carrying out average calculation according to the formula:the current average characteristic value acv of the electrolytic cell at the same monitoring time point is output, wherein w is represented by the number of the remaining monitoring areas, cdv w* Current data values denoted as w-th monitoring region;
the temperature sensor is used for acquiring the temperature of electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point to obtain the temperature value of the electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point, the maximum electrolyte temperature value and the minimum electrolyte temperature value are removed from each monitoring area, the remaining electrolyte temperature values in each monitoring area are calculated averagely, and the method is based on the formulaThe average characteristic value atp of the electrolyte temperature of the electrolytic cell at the same monitoring time is output, wherein wd w* Electrolyte temperature values expressed as w-th monitoring zone;
acquiring voltage values which are held at two ends of the electrolytic cell at the same monitoring time point through a voltage sensor, and recording the voltage values as au;
the electrolytic operation state of the electrolytic cell is analyzed, and the specific analysis process is as follows:
acquiring current average characteristic values, electrolyte temperature average characteristic values and voltage values in electrolysis data parameters of an electrolytic cell in PEM water electrolysis hydrogen production equipment, sequentially acquiring reference data values of the current average characteristic values, the electrolyte temperature average characteristic values and the voltage values, and sequentially marking the reference data values as acv, atp and au;
and carrying out comprehensive calculation and analysis on three operation parameters of the electrolytic cell, and according to a set data model:the operation evaluation index rex of the electrolytic cell of the PEM water electrolysis hydrogen production plant is thus output, wherein Δa is a comparison value of the difference between the current average characteristic value and the reference data value thereof, and Δb is a difference between the electrolyte temperature average characteristic value and the reference data value thereofThe comparison value delta c is a comparison value of the difference value between the voltage value and the reference data value, rho 1, rho 2 and rho 3 are weight factor coefficients, rho 1, rho 2 and rho 3 are natural numbers larger than 0, and the weight factor coefficients are used for balancing the duty ratio weight of each item of data in formula calculation, so that the accuracy of a calculation result is promoted;
comparing and matching the operation evaluation index of the electrolytic cell with an operation state judgment table stored in a cloud database, thereby obtaining operation state grades of the electrolytic cell, wherein each obtained operation evaluation index corresponds to one operation state grade, and the operation state grades comprise a top operation grade and a secondary operation grade;
if the operation state grade of the electrolytic cell is judged to be the superior operation grade, generating a device operation good signal;
if the operating state level of the electrolytic cell is determined to be the secondary operating level, an equipment operation abnormality signal is generated.
The hydrogen production state analysis unit is used for monitoring hydrogen production data parameters of the PEM water electrolysis hydrogen production equipment in the current monitoring period, so that the hydrogen production state of the PEM water electrolysis hydrogen production equipment in the current monitoring period is analyzed, and the specific process is as follows:
monitoring the hydrogen flow and the oxygen flow at each monitoring time point in the current monitoring period by a flow monitor to obtain hydrogen flow value and oxygen flow value at each monitoring time point in the current monitoring period, and respectively recording the hydrogen flow value and the oxygen flow value as lh i And ly i Where i is a set of several monitoring time points divided by the current monitoring period, and i=1, 2,3 … … n, n is the total number;
the hydrogen concentration and the oxygen concentration at each monitoring time point in the current monitoring period are respectively monitored by a hydrogen concentration sensor and an oxygen concentration sensor to obtain a hydrogen concentration value and an oxygen concentration value at each monitoring time point in the current monitoring period, and the hydrogen concentration value and the oxygen concentration value are respectively recorded as ndh i And ndy i ；
Substituting the hydrogen flow value, the oxygen flow value, the hydrogen concentration value and the oxygen concentration value in the hydrogen production data parameters at all monitoring time points acquired in the current monitoring period into a preset valueAccording to the set data model:outputting a hydrogen production coefficient hpc of the PEM water electrolysis hydrogen production equipment under the current monitoring period, wherein mu is a conversion factor coefficient, mu is a constant, and the conversion factor coefficient is used for converting physical quantities of all data items into data coefficients of the same physical quantity;
setting an evaluation comparison interval of hydrogen production coefficients, and substituting the hydrogen production coefficients of the PEM water electrolysis hydrogen production equipment in the current monitoring period into the preset evaluation comparison interval for comparison analysis;
if the hydrogen production coefficient is within the preset evaluation comparison interval, generating a hydrogen production state evaluation good signal, otherwise, if the hydrogen production coefficient is outside the preset evaluation comparison interval, generating a hydrogen production state evaluation abnormal signal.
The comprehensive judging unit judges the type signal according to the output equipment running state and judges the type signal according to the hydrogen production state, and accordingly carries out fault comprehensive judging analysis on the two types of judging signals, and the specific analysis process is as follows:
simultaneously calling a device running state judging type signal and a hydrogen production state judging type signal of PEM electrolytic water hydrogen production device, wherein the device running state judging type signal respectively comprises a device running good signal and a device running abnormal signal, and the hydrogen production state judging type signal respectively comprises a hydrogen production state evaluation good signal and a hydrogen production state evaluation abnormal signal;
if the judging signals which are simultaneously output are the equipment operation abnormal signal and the hydrogen production state evaluation abnormal signal or the equipment operation good signal and the hydrogen production state evaluation abnormal signal or the equipment operation abnormal signal and the hydrogen production state evaluation good signal respectively, generating potential fault risk signals;
and in other cases, generating normal signals; thereby generating a potential fault risk signal or a normal signal.
The fault diagnosis and early warning unit performs fault diagnosis and early warning analysis on the PEM water electrolysis hydrogen production equipment according to the output potential fault risk signals, and the specific analysis process is as follows:
s1: calling an electrolyte temperature average characteristic value atp of an electrolytic cell in PEM electrolytic water hydrogen production equipment, a reference data value atp corresponding to the electrolyte temperature average characteristic value, and a comparison value delta b of a difference value between the electrolyte temperature average characteristic value and the reference data value, substituting three items of data into a fault judgment data model for analysis, and generating an overheat fault analysis signal and triggering overheat fault removal verification analysis operation to process if the atp-atp is more than 0 and I is more than delta b, wherein the overheat fault analysis signal is specifically: setting a thermal verification period, increasing the circulating water supply amount of a circulating water supply system to a1 unit volume in the thermal verification period, acquiring an electrolyte temperature average characteristic value of an electrolytic cell after the thermal verification period is finished, and substituting the electrolyte temperature average characteristic value into a fault judgment data model for analysis, wherein the setting of a1 specific numerical value is specifically set in a specific case by a person skilled in the art, so that the description is omitted;
if the overheat fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the overheat fault analysis signal is not output, generating a circulating water supply shortage warning signal;
accordingly, the generated cooling system fault warning signals or circulating water insufficient supply warning signals are all classified into warning signal groups, and the warning signal groups are displayed and described through a display terminal;
if the att-attp is less than 0 and I is more than delta b, generating a supercooling fault early warning signal, and triggering supercooling fault removal verification analysis operation to process according to the supercooling fault early warning signal, wherein the specific steps are as follows: acquiring the environmental temperature of the environment where the electrolytic cell is located, setting an environmental temperature contrast value, and carrying out data analysis on the two items of data;
if the ambient temperature is less than the ambient temperature contrast value, the ambient temperature contrast value is differenced from the ambient temperature, so that an ambient temperature difference value is obtained;
comparing and matching the environmental temperature difference value with a cooling system temperature regulation data table stored in a cloud database, thereby obtaining a temperature regulation quantity of the cooling system, wherein each obtained environmental temperature difference value corresponds to one temperature regulation quantity, and the temperature of the cooling system under the temperature regulation quantity corresponding to the temperature regulation value;
after the temperature adjustment of the cooling system is completed, an average characteristic value of the electrolyte temperature of the electrolytic cell is obtained and substituted into a fault judgment data model for analysis;
if the supercooling fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the supercooling fault analysis signal is not output, generating a warning signal with lower ambient temperature
Accordingly, the generated cooling system fault warning signals or warning signals with low ambient temperature are all classified into warning signal groups, and the warning signal groups are displayed and described through a display terminal;
s2: the method comprises the steps of obtaining the moisture content, the current density value and the electrolytic pressure change value in an electrolytic cell, calibrating the moisture content, the current density value and the electrolytic pressure change value as hsl, md and ybz respectively, calculating and analyzing three data, and setting a data model:the proton exchange membrane aging coefficient lhx is output, wherein δ1, δ2 and δ3 are correction factor coefficients of a moisture content value, a current density value and an electrolytic pressure change value respectively, δ1, δ2 and δ3 are natural numbers larger than 0, and the correction factor coefficients are used for correcting deviation of various parameters in a formula calculation process, so that more accurate parameter data are calculated;
setting an aging comparison threshold of the aging coefficient of the proton exchange membrane, comparing and analyzing the two items of data, generating a proton exchange membrane aging warning signal if the aging coefficient of the proton exchange membrane is greater than a preset aging comparison threshold, and displaying and explaining through a display terminal;
s3: setting a monitoring period, equally dividing the monitoring period into a plurality of sub-time points, acquiring hydrogen yield at each sub-time point, taking time as an abscissa, taking hydrogen yield as an ordinate, establishing a hydrogen yield two-dimensional coordinate system, and drawing the hydrogen yield at each sub-time point acquired in the monitoring period on the hydrogen yield two-dimensional coordinate system in a dot drawing manner, thereby acquiring a hydrogen yield broken line;
and calculating the total included angle between the hydrogen yield fold line and the horizontal line, if the total included angle is smaller than the comparison included angle beta, generating a catalyst deactivation warning signal, and displaying and explaining the catalyst deactivation warning signal through a display terminal.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (8)
1. The utility model provides a PEM electrolytic water hydrogen manufacturing equipment trouble early warning system, includes cloud ware, cloud ware communication connection has data acquisition unit, cloud database, data acquisition unit is arranged in gathering the electrolysis data parameter and the hydrogen manufacturing data parameter of the electrolytic cell in the PEM electrolytic water hydrogen manufacturing equipment to send each type information to cloud database and store, cloud database still is used for storing the electrolysis subregion decision table, stores running state decision table, stores cooling system temperature regulation data table, and its characterized in that, cloud ware still communication connection has:
the electrolysis equipment analysis unit is used for monitoring electrolysis data parameters of an electrolysis cell in the PEM water electrolysis hydrogen production equipment, analyzing the electrolysis running state of the electrolysis cell, outputting the running state grade of the electrolysis cell according to the electrolysis running state grade, and generating an equipment running good signal or an equipment running abnormal signal according to the running state grade output by the electrolysis cell;
the hydrogen production state analysis unit is used for monitoring hydrogen production data parameters of the PEM water electrolysis hydrogen production equipment in the current monitoring period, so as to analyze the hydrogen production state of the PEM water electrolysis hydrogen production equipment in the current monitoring period and output a hydrogen production state evaluation good signal or a hydrogen production state evaluation abnormal signal according to the hydrogen production state;
the comprehensive judging unit judges the type signal and the hydrogen production state according to the output equipment running state and carries out fault comprehensive judgment analysis on the two types of judging signals, so as to generate a potential fault risk signal or a normal signal;
the fault diagnosis early warning unit is used for carrying out fault diagnosis early warning analysis on the PEM electrolytic water hydrogen production equipment according to the output potential fault risk signals, generating a cooling system fault warning signal or a circulating water insufficient supply warning signal or an environment temperature low warning signal, a proton exchange membrane aging warning signal and a catalyst deactivation warning signal according to the fault diagnosis early warning analysis, and displaying and explaining the fault warning signal or the circulating water insufficient supply warning signal or the environment temperature low warning signal, the proton exchange membrane aging warning signal and the catalyst deactivation warning signal through the display terminal.
2. The fault pre-warning system for PEM water electrolysis hydrogen production equipment according to claim 1, wherein the monitoring of the electrolysis data parameters of the electrolytic cell in the PEM water electrolysis hydrogen production equipment comprises the following specific monitoring processes:
acquiring real-time electrolytic capacity of an electrolytic cell in PEM electrolytic water hydrogen production equipment, and performing comparison matching analysis on the real-time electrolytic capacity of the electrolytic cell and an electrolytic partition judgment table stored in a cloud database, thereby matching to obtain monitoring partition quantity of the electrolytic cell, and marking the monitoring partition quantity as W, wherein each real-time electrolytic capacity of the electrolytic cell corresponds to one monitoring partition quantity;
dividing the electrolytic cell into W monitoring areas in equal quantity according to the monitoring area dividing number and the real-time electrolytic capacity of the electrolytic cell, wherein the V space amount=the real-time electrolytic capacity/the monitoring area dividing number;
collecting the current of each monitoring area in the electrolytic cell at the same monitoring time point through a current sensor to obtain the current data value of each monitoring area in the electrolytic cell at the same monitoring time point, removing the maximum current data value and the minimum data value from each monitoring area, and carrying out average calculation on the current data value of each remaining monitoring area according to the formula:the current average characteristic value acv of the electrolytic cell at the same monitoring time point is output, wherein w is represented by the number of the remaining monitoring areas, cdv w* Current data values denoted as w-th monitoring region;
the temperature sensor is used for acquiring the temperature of electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point to obtain the temperature value of the electrolyte in each monitoring area of the electrolytic cell at the same monitoring time point, the maximum electrolyte temperature value and the minimum electrolyte temperature value are removed from each monitoring area, the remaining electrolyte temperature values in each monitoring area are calculated averagely, and the method is based on the formulaThe average characteristic value atp of the electrolyte temperature of the electrolytic cell at the same monitoring time is output, wherein wd w* Electrolyte temperature values expressed as w-th monitoring zone;
the voltage value applied across the cell at the same monitoring time point is obtained by a voltage sensor and is noted as au.
3. The fault pre-warning system for PEM electrolyzed water hydrogen production facilities according to claim 1, wherein said analysis of the electrolytic operation state of the electrolytic cell is performed by the following specific analysis process:
acquiring current average characteristic values, electrolyte temperature average characteristic values and voltage values in electrolysis data parameters of an electrolytic cell in PEM water electrolysis hydrogen production equipment, sequentially acquiring reference data values of the current average characteristic values, the electrolyte temperature average characteristic values and the voltage values, and sequentially marking the reference data values as acv, atp and au;
and carrying out comprehensive calculation and analysis on three operation parameters of the electrolytic cell, and according to a set data model:outputting an operation evaluation index rex of an electrolytic cell of the PEM electrolytic water hydrogen production device, wherein deltaa is a comparison value of a difference value between a current average characteristic value and a reference data value thereof, deltab is a comparison value of a difference value between an electrolyte temperature average characteristic value and a reference data value thereof, deltac is a comparison value of a difference value between a voltage value and a reference data value thereof, and rho 1, rho 2 and rho 3 are weight factor coefficients;
comparing and matching the operation evaluation index of the electrolytic cell with an operation state judgment table stored in a cloud database, thereby obtaining operation state grades of the electrolytic cell, wherein each obtained operation evaluation index corresponds to one operation state grade, and the operation state grades comprise a top operation grade and a secondary operation grade;
if the operation state grade of the electrolytic cell is judged to be the superior operation grade, generating a device operation good signal; if the operating state level of the electrolytic cell is determined to be the secondary operating level, an equipment operation abnormality signal is generated.
4. The PEM water electrolysis hydrogen production plant fault warning system according to claim 1, wherein the monitoring of hydrogen production data parameters and analysis of hydrogen production state under the current monitoring period of the PEM water electrolysis hydrogen production plant comprises the following specific processes:
monitoring the hydrogen flow and the oxygen flow at each monitoring time point in the current monitoring period by a flow monitor to obtain hydrogen flow value and oxygen flow value at each monitoring time point in the current monitoring period, and respectively recording the hydrogen flow value and the oxygen flow value as lh i And ly i Where i is a set of several monitoring time points divided by the current monitoring period, and i=1, 2,3 … … n, n is the total number;
the hydrogen concentration and the oxygen concentration at each monitoring time point in the current monitoring period are respectively monitored by a hydrogen concentration sensor and an oxygen concentration sensor to obtain a hydrogen concentration value and an oxygen concentration value at each monitoring time point in the current monitoring period, and the hydrogen concentration value and the oxygen concentration value are respectively recorded as ndh i And ndy i ；
Substituting the hydrogen flow value, the oxygen flow value, the hydrogen concentration value and the oxygen concentration value in the hydrogen production data parameters acquired in the current monitoring time period into a preset data model, and according to the set data model:thereby outputting hydrogen production coefficient hpc of PEM electrolytic water hydrogen production equipment under the current monitoring period, wherein mu is conversion factorSub-coefficients;
setting an evaluation comparison interval of hydrogen production coefficients, and substituting the hydrogen production coefficients of the PEM water electrolysis hydrogen production equipment in the current monitoring period into the preset evaluation comparison interval for comparison analysis;
if the hydrogen production coefficient is within the preset evaluation comparison interval, generating a hydrogen production state evaluation good signal, otherwise, if the hydrogen production coefficient is outside the preset evaluation comparison interval, generating a hydrogen production state evaluation abnormal signal.
5. The fault early warning system for PEM water electrolysis hydrogen production equipment according to claim 1, wherein said fault comprehensive decision analysis is performed on two kinds of decision signals, and the specific analysis process is as follows:
simultaneously calling a device running state judging type signal and a hydrogen production state judging type signal of PEM electrolytic water hydrogen production device, wherein the device running state judging type signal respectively comprises a device running good signal and a device running abnormal signal, and the hydrogen production state judging type signal respectively comprises a hydrogen production state evaluation good signal and a hydrogen production state evaluation abnormal signal;
if the judging signals which are simultaneously output are the equipment operation abnormal signal and the hydrogen production state evaluation abnormal signal or the equipment operation good signal and the hydrogen production state evaluation abnormal signal or the equipment operation abnormal signal and the hydrogen production state evaluation good signal respectively, generating potential fault risk signals;
in other cases, the normal signal is generated.
6. The fault early warning system for PEM water electrolysis hydrogen production equipment according to claim 1, wherein the fault diagnosis early warning analysis is carried out on the PEM water electrolysis hydrogen production equipment, and the specific analysis process is as follows:
s1: the method comprises the steps of calling an electrolyte temperature average characteristic value atp of an electrolytic cell in PEM electrolytic water hydrogen production equipment, a reference data value atp corresponding to the electrolyte temperature average characteristic value, and a comparison value delta b of a difference value between the electrolyte temperature average characteristic value and the reference data value, substituting three items of data into a fault judgment data model for analysis, generating an overheat fault analysis signal if the atp-atp is more than 0 and the I-atp is more than delta b, triggering overheat fault elimination verification analysis operation, generating a cooling system fault warning signal or a circulating water insufficient warning signal according to the overheat fault analysis operation, classifying the cooling system fault warning signal or the circulating water insufficient warning signal into a warning signal group, and displaying and explaining the warning signal group through a display terminal;
if the condition that the att-att is less than 0 and the I is more than delta b is satisfied, generating a supercooling fault early warning signal, triggering supercooling fault removal verification analysis operation, generating a cooling system fault warning signal or an environment temperature lower warning signal according to the supercooling fault early warning signal or the environment temperature lower warning signal, classifying the cooling system fault warning signal or the environment temperature lower warning signal into a warning signal group, and displaying and explaining the warning signal group through a display terminal;
s2: the method comprises the steps of obtaining the moisture content, the current density value and the electrolytic pressure change value in an electrolytic cell, calibrating the moisture content, the current density value and the electrolytic pressure change value as hsl, md and ybz respectively, calculating and analyzing three data, and setting a data model:outputting a proton exchange membrane aging coefficient lhx, wherein δ1, δ2 and δ3 are correction factor coefficients of a moisture content, a current density value and an electrolytic pressure change value respectively;
setting an aging comparison threshold of the aging coefficient of the proton exchange membrane, comparing and analyzing the two items of data, generating a proton exchange membrane aging warning signal if the aging coefficient of the proton exchange membrane is greater than a preset aging comparison threshold, and displaying and explaining through a display terminal;
s3: setting a monitoring period, equally dividing the monitoring period into a plurality of sub-time points, acquiring hydrogen yield at each sub-time point, taking time as an abscissa, taking hydrogen yield as an ordinate, establishing a hydrogen yield two-dimensional coordinate system, and drawing the hydrogen yield at each sub-time point acquired in the monitoring period on the hydrogen yield two-dimensional coordinate system in a dot drawing manner, thereby acquiring a hydrogen yield broken line;
and calculating the total included angle between the hydrogen yield fold line and the horizontal line, if the total included angle is smaller than the comparison included angle beta, generating a catalyst deactivation warning signal, and displaying and explaining the catalyst deactivation warning signal through a display terminal.
7. The fault early warning system for PEM electrolyzed water hydrogen production facilities according to claim 6 wherein said overheat fault removal verification analysis operation is performed as follows:
setting a thermal verification period, increasing the circulating water supply quantity of a circulating water supply system to a1 unit volume in the thermal verification period, acquiring an electrolyte temperature average characteristic value of the electrolytic cell after the thermal verification period is finished, and substituting the electrolyte temperature average characteristic value into a fault judgment data model for analysis;
if the overheat fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the overheat fault analysis signal is not output, generating a circulating water supply shortage warning signal.
8. The fault early warning system for PEM electrolyzed water hydrogen production facilities according to claim 6 wherein said supercooling fault removal validation analysis process is performed as follows:
acquiring the environmental temperature of the environment where the electrolytic cell is located, setting an environmental temperature contrast value, and carrying out data analysis on the two items of data;
if the ambient temperature is less than the ambient temperature contrast value, the ambient temperature contrast value is differenced from the ambient temperature, so that an ambient temperature difference value is obtained;
comparing and matching the environmental temperature difference value with a cooling system temperature regulation data table stored in a cloud database, thereby obtaining a temperature regulation quantity of the cooling system, wherein each obtained environmental temperature difference value corresponds to one temperature regulation quantity, and the temperature of the cooling system under the temperature regulation quantity corresponding to the temperature regulation value;
after the temperature adjustment of the cooling system is completed, an average characteristic value of the electrolyte temperature of the electrolytic cell is obtained and substituted into a fault judgment data model for analysis;
if the supercooling fault analysis signal is still output, generating a cooling system fault warning signal;
otherwise, if the supercooling fault analysis signal is not output, generating a warning signal with lower ambient temperature.
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