CN-121538685-B - Hydrolysis hydrogen production test method, equipment and system

CN121538685BCN 121538685 BCN121538685 BCN 121538685BCN-121538685-B

Abstract

The invention relates to the technical field of material test analysis, in particular to a method, equipment and a system for testing hydrogen production by hydrolysis, which are used for determining a relative controllable coefficient under each working condition by acquiring working voltages of an electrolytic tank under a plurality of working conditions; analyzing steady state variation trend of hydrolysis hydrogen production reaction according to relative controllable coefficient under each working condition and working voltage of the electrolytic cell, determining operation steady state degree under each working condition, dynamically optimizing adjustment step length of each type of operation parameter value according to the operation steady state degree under each working condition, and further determining the optimal operation parameter value group corresponding to the hydrolysis hydrogen production test based on the adjustment result. According to the invention, the system behavior is comprehensively known through multi-working condition data collection, the parameter sensitivity and the system stability are evaluated through relative controllable coefficients and the running steady state degree, and finally, the step length is dynamically adjusted to realize efficient and accurate optimizing.

Inventors

DONG SHIAN
JI XIUYAN

Assignees

苏州行则兴氢能源科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260116

Claims (10)

1. The hydrolysis hydrogen production test method is characterized by comprising the following steps of: the method comprises the steps of obtaining working voltages of an electrolytic tank under a plurality of working conditions, wherein the working conditions consist of different types of operation parameter values with reaction correlation, and the number of the operation parameter types corresponding to one working condition is not less than two; determining a relative controllable coefficient under each working condition according to the working voltage of the electrolytic tank under each working condition, wherein the relative controllable coefficient is at least used for representing the influence degree of the change of the operating parameter value on the water electrolysis reaction; Analyzing steady-state variation trend of the hydrolysis hydrogen production reaction in the positive direction of parameter value increase according to the relative controllable coefficient and the working voltage of the electrolytic tank under each working condition, and determining the operation steady-state degree under each working condition; And dynamically optimizing the adjustment step length of each type of operation parameter value according to the operation steady state degree under each working condition, and further determining the optimal operation parameter value group corresponding to the hydrolysis hydrogen production test based on the adjustment result.
2. A method of testing hydrogen production by hydrolysis as claimed in claim 1 wherein said determining the relative controllable coefficient for each condition based on the operating voltage of the electrolyzer for each condition comprises: determining an operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value according to the operation voltage of the electrolytic cell under each second operation parameter value, wherein the first operation parameter value is any type of operation parameter value forming a working condition, and the second operation parameter value is another type of operation parameter value different from the first operation parameter value in type; And determining the relative controllable coefficient of each first operating parameter value under each second operating parameter value according to the operating parameter value variation influence coefficient of each first operating parameter value under each second operating parameter value.
3. A method of testing hydrogen production by hydrolysis as claimed in claim 2 wherein said determining an operating parameter value variation influence coefficient for each first operating parameter value at each second operating parameter value based on the operating voltage of the electrolyzer at each first operating parameter value at each second operating parameter value comprises: determining the voltage difference between every two second operation parameter values corresponding to the same first operation parameter value, wherein the voltage difference is obtained by subtracting the working voltages of the two electrolytic cells; determining an operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value according to the maximum voltage difference of each first operation parameter value and the voltage difference value between each second operation parameter value of each first operation parameter value and the adjacent second operation parameter value, wherein the second operation parameter values under the same first operation parameter value are arranged according to a preset sequence, the preset sequence is an ascending sequence or a descending sequence, and the voltage difference value is an absolute value of the voltage difference.
4. A hydrolysis hydrogen production test method as described in claim 3 wherein said determining a relative controllable coefficient for each first operating parameter value at each second operating parameter value based on operating parameter value variation influence coefficients for each first operating parameter value at each second operating parameter value comprises: Obtaining a vector formed by the working voltage of the electrolytic cell of each second operation parameter value under the same first operation parameter value as a parameter variation vector, and further determining the average value of all the parameter variation vectors as a reference vector; And determining the relative controllable coefficient of each first operation parameter value under each second operation parameter value according to the operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value and the similarity degree between the parameter variation vector and the reference vector of each first operation parameter value.
5. A hydrolysis hydrogen production test method as defined in claim 4 wherein said determining a relative controllable coefficient for each first operating parameter value at each second operating parameter value based on an operating parameter value variation influence coefficient for each first operating parameter value at each second operating parameter value, a degree of similarity between said parameter variation vector and a reference vector for each first operating parameter value, comprises: calculating the average value of the variation influence coefficients of the operation parameter values of different first operation parameter values under the same second operation parameter value, and taking the average value as a reference coefficient; And determining the relative controllable coefficient of each first operation parameter value under each second operation parameter value according to the difference condition between the operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value and the reference coefficient and the similarity degree.
6. A method of testing hydrogen production by hydrolysis as claimed in claim 2 wherein said analyzing steady state trends of the hydrogen production reaction by hydrolysis based on the relative controllable coefficient and the operating voltage of the electrolyzer under each condition, determining the steady state extent of operation under each condition comprises: Determining a first direction difference coefficient according to a relative controllable coefficient of the first operation parameter value under the second operation parameter value, an electrolytic cell working voltage, a first reference controllable coefficient and a first reference working voltage aiming at the first operation parameter value and the second operation parameter value corresponding to each working condition respectively; the first reference controllable coefficient and the first reference working voltage are respectively the relative controllable coefficient of one first operation parameter value adjacent to the first operation parameter value under the second operation parameter value and the working voltage of the electrolytic tank; Determining a second direction difference coefficient according to the relative controllable coefficient, the electrolytic cell working voltage, a second reference controllable coefficient and a second reference working voltage, wherein the second reference controllable coefficient and the second reference working voltage are respectively the relative controllable coefficient of one second operation parameter value adjacent to the second operation parameter value under the first operation parameter value and the electrolytic cell working voltage; Determining a cross direction difference coefficient according to the relative controllable coefficient, the electrolytic cell operating voltage, a third reference controllable coefficient and a third reference operating voltage, wherein the third reference controllable coefficient and the third reference operating voltage are respectively the relative controllable coefficient and the electrolytic cell operating voltage of a first operating parameter value adjacent to the first operating parameter value under a second operating parameter value adjacent to the second operating parameter value; And fusing the first direction difference coefficient, the second direction difference coefficient and the cross direction difference coefficient to determine the running steady state degree of the first running parameter value under the second running parameter value.
7. A hydrolysis hydrogen production test method as defined in claim 6, wherein determining the undetermined direction difference coefficient by referring to a first operating parameter value direction, the second operating parameter value direction, and the cross direction as undetermined directions, comprises: Calculating a product of a relative controllable coefficient and an electrolytic cell working voltage as a first product, and calculating a product of a pending reference controllable coefficient and a pending reference working voltage as a second product, wherein the pending reference controllable coefficient is a reference controllable coefficient corresponding to a pending direction, and the pending reference working voltage is a reference working voltage corresponding to the pending direction; and determining a direction difference coefficient to be determined according to the difference condition between the first product and the second product.
8. A hydrogen hydrolysis hydrogen production test method as defined in claim 2, wherein said dynamically optimizing the adjustment step size of each type of operating parameter value by the steady state extent of operation under each operating condition comprises: for each second operating parameter value, respectively: determining a first steady-state degree threshold corresponding to the second operating parameter value based on the operating steady-state degrees of all the first operating parameter values at the second operating parameter value, and comparing the first operating steady-state degree with the first steady-state degree threshold for each first operating parameter value: If the first operation steady-state degree is smaller than the first steady-state degree threshold, optimizing the adjustment step length of the first operation parameter value according to the first operation steady-state degree, and taking the optimized adjustment step length as the final adjustment step length of the first operation parameter value, wherein the first operation steady-state degree is the operation steady-state degree corresponding to the dynamically changed first operation parameter value; For each first operating parameter value, performing: Determining a second steady-state degree threshold corresponding to the first operating parameter value based on the operating steady-state degrees of all the second operating parameter values at the first operating parameter value, and comparing the second operating steady-state degree with the second steady-state degree threshold for each second operating parameter value: If the second operation steady-state degree is smaller than the second steady-state degree threshold, optimizing the adjustment step length of the second operation parameter value according to the second operation steady-state degree, and taking the optimized adjustment step length as the final adjustment step length of the second operation parameter value, wherein the second operation steady-state degree is the operation steady-state degree corresponding to the dynamically changed second operation parameter value.
9. A hydrolytic hydrogen production test system, which is characterized by comprising a memory and a processor, wherein the memory is connected with the processor, the memory is used for storing program instructions, and the processor is used for realizing the steps in the hydrolytic hydrogen production test method according to any one of claims 1-8 when the program instructions are executed.
10. A hydrolytic hydrogen production test device comprising a computer readable storage medium storing a computer program which when executed by a processor performs the steps of a hydrolytic hydrogen production test method as claimed in any one of claims 1 to 8.

Description

Hydrolysis hydrogen production test method, equipment and system Technical Field The invention relates to the technical field of material test and analysis, in particular to a hydrolysis hydrogen production test method, equipment and a system. Background The proton exchange membrane water electrolyzer is used as an efficient green hydrogen production technology, and the performance of the proton exchange membrane water electrolyzer is highly dependent on the cooperative optimization of multiple operation parameter values such as temperature, pressure, flow and the like. However, the electro-thermo-fluid-mass multi-physical field strength coupling effects present inside PEM water baths make the interactions between parameters extremely complex, which presents a great challenge for systematic process optimization. Currently, there are significant limitations to the regulation strategy for critical operating parameter values (such as water inlet temperature) in the testing and optimization process for PEM water electrolysers. The conventional method generally adopts a fixed adjustment step length to perform parameter scanning, however, the step length is too large, so that a key optimal parameter interval is missed, the optimization accuracy is insufficient, and the step length is too small, so that the test period is long and the efficiency is low. The defects of the parameter regulation strategy make the testing process difficult to balance between efficiency and precision, and the complete system performance map cannot be rapidly and accurately drawn, so that the efficient and accurate optimization of the optimal parameter set is restricted, and the further improvement of hydrogen production yield and system operation efficiency is finally restricted. Disclosure of Invention In order to solve the technical problem that the optimal parameter set is difficult to obtain efficiently and accurately due to the adoption of the fixed parameter adjustment step length in the conventional hydrolysis hydrogen production test, the invention aims to provide a hydrolysis hydrogen production test method, equipment and a system, and the adopted technical scheme is as follows: one embodiment of the invention provides a hydrolysis hydrogen production test method, which comprises the following steps: the method comprises the steps of obtaining working voltages of an electrolytic tank under a plurality of working conditions, wherein the working conditions consist of different types of operation parameter values with reaction correlation, and the number of the operation parameter types corresponding to one working condition is not less than two; determining a relative controllable coefficient under each working condition according to the working voltage of the electrolytic tank under each working condition, wherein the relative controllable coefficient is at least used for representing the influence degree of the change of the operating parameter value on the water electrolysis reaction; analyzing steady-state variation trend of the hydrolysis hydrogen production reaction according to the relative controllable coefficient under each working condition and the working voltage of the electrolytic cell, and determining the running steady-state degree under each working condition; And dynamically optimizing the adjustment step length of each type of operation parameter value according to the operation steady state degree under each working condition, and further determining the optimal operation parameter value group corresponding to the hydrolysis hydrogen production test based on the adjustment result. Further, determining the relative controllable coefficient under each working condition according to the working voltage of the electrolytic tank under each working condition comprises the following steps: determining an operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value according to the operation voltage of the electrolytic cell under each second operation parameter value, wherein the first operation parameter value is any type of operation parameter value forming a working condition, and the second operation parameter value is another type of operation parameter value different from the first operation parameter value in type; And determining the relative controllable coefficient of each first operating parameter value under each second operating parameter value according to the operating parameter value variation influence coefficient of each first operating parameter value under each second operating parameter value. Further, the determining an operation parameter value variation influence coefficient of each first operation parameter value under each second operation parameter value according to the operation voltage of the electrolytic cell under each first operation parameter value under each second operation parameter value includes: de