A management system for a hydrogen energy storage station

Abstract

The application relates to the field of hydrogen energy technology, in particular to a hydrogen energy storage station management system; a historical data storage unit stores the average value of hydrogen consumption of the hydrogen refueling station in different time periods per day; an actual data acquisition unit acquires the actual hydrogen consumption of the hydrogen refueling station per day in different time periods; a scheduling unit transports hydrogen from the hydrogen energy storage station to the hydrogen refueling station under jurisdiction to supplement hydrogen for the hydrogen refueling station; a prediction unit values the time of next hydrogen supplement according to the historical hydrogen consumption per day in the time period; and a correction unit corrects the value obtained by the prediction unit according to the actual consumption; the hydrogen energy storage station management system can predict the specific time of hydrogen transportation from the hydrogen energy storage station to the hydrogen refueling station through the prediction unit, and corrects the prediction value through the correction unit to achieve the optimal scheduling time, so that the cost is saved, and the economy and sustainability of hydrogen energy application are improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen energy technology, and more specifically to a management system for a hydrogen energy storage station. Background Technology

[0002] Hydrogen energy is a recognized clean energy source, and it is emerging as a low-carbon and zero-carbon energy source. Hydrogen has the highest calorific value among common fuels, about three times that of oil and 4.5 times that of coal. Therefore, hydrogen fuel cell vehicles have outstanding advantages in reducing air pollution, reducing greenhouse gas emissions, and reducing dependence on traditional energy sources. Hydrogen refueling stations are gas stations that provide hydrogen to fuel cell vehicles. With the development of hydrogen energy, the construction of hydrogen refueling stations is gradually accelerating.

[0003] In the hydrogen energy industry chain, hydrogen refueling stations, as the places that directly supply hydrogen to users, are of paramount importance in terms of operational stability and the reliability of hydrogen supply. However, since the hydrogen energy industry is still in its early stages of development, the hydrogen dispatch and supply system between hydrogen storage stations and hydrogen refueling stations is not yet perfect. Therefore, how to efficiently and safely dispatch hydrogen to hydrogen refueling stations according to the needs of hydrogen storage stations has become an urgent problem to be solved in the development of the current hydrogen energy industry.

[0004] Because the cost of transporting hydrogen from hydrogen storage stations to hydrogen refueling stations is very high, if high-pressure gaseous hydrogen or liquid hydrogen transport vehicles are used, there are issues such as the purchase, maintenance, fuel costs, and driver wages. Therefore, in order to save costs, the specific problem that this patent needs to solve is to start scheduling when the hydrogen at the refueling station is about to run out, but to ensure that there is a sufficient amount of hydrogen available before the arrival of the new hydrogen.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0006] The purpose of this invention is to provide a management system for hydrogen energy storage stations that can effectively solve the above-mentioned technical problems.

[0007] To achieve the objectives of this invention, the following technical solution is adopted:

[0008] A management system for a hydrogen energy storage station includes:

[0009] Historical data storage unit: stores the average daily hydrogen consumption of this hydrogen refueling station at different times;

[0010] Actual data acquisition unit: Acquires the actual daily hydrogen consumption of the hydrogen refueling station at different times;

[0011] Dispatch unit: Transports hydrogen from hydrogen storage stations to hydrogen refueling stations under its jurisdiction, and replenishes hydrogen at the refueling stations;

[0012] Prediction unit: Based on the historical daily hydrogen consumption during this period, it estimates the time of the next hydrogen replenishment.

[0013] Correction Unit: Corrects the predicted value obtained by the prediction unit based on the actual consumption.

[0014] Furthermore, the correction unit verifies the historical data stored in the historical data storage unit; that is, the actual data acquisition unit obtains the daily hydrogen consumption and compares it with the set threshold; if the actual hydrogen consumption is within the threshold range, the average predicted value is used as the start time for the next hydrogen dispatch; if the actual hydrogen consumption exceeds the threshold range, the correction unit corrects the predicted value.

[0015] Furthermore, the threshold is the sum of the historical daily hydrogen consumption average and the error value at hydrogen refueling stations.

[0016] Furthermore, the specific steps for determining the appropriate time for hydrogen replenishment are as follows:

[0017] S1: Collect the total amount of hydrogen stored in the hydrogen storage cylinder group in the hydrogen refueling station and record it as M1;

[0018] S2: The average daily hydrogen consumption of hydrogen refueling stations during different time periods, denoted as M2.

[0019] S3: The calculated hydrogen replenishment time is tentatively set to T, where T = MI / M2.

[0020] Furthermore, the specific correction method for the pseudo-value T by the correction unit is as follows:

[0021] R1: Obtain the actual daily hydrogen consumption of the hydrogen refueling station in different time periods and record it as M3;

[0022] R2: Calculate the deviation between the actual hydrogen consumption and the average value, and convert it into the deviation ratio α; calculate the deviation ratio, α=(M3-M2) / M2;

[0023] R3: Confirm the range of the correction coefficient and set the positive and negative thresholds θ. When the deviation ratio is within this range, the correction coefficient is close to 1 (indicating slight adjustment or no adjustment); when the deviation ratio exceeds this range, the correction coefficient will increase or decrease accordingly; the positive and negative thresholds θ are set based on experience.

[0024] R4: Calculate the correction factor, correction factor = 1 + deviation ratio * correction factor; the correction factor is an adjustment parameter used to control the sensitivity of the correction factor to the deviation ratio;

[0025] R5: Apply the calculated correction factor to the planned time T; if the actual consumption is greater than the average, the correction factor is greater than 1, and T can be shortened; if the actual consumption is less than the average, the correction factor is less than 1 but greater than 0, and T can be extended.

[0026] Furthermore, the actual data acquisition unit includes at least one of the following: a pressure gauge, a mass flow meter, and a thermal conductivity hydrogen sensor for testing the pressure inside the hydrogen cylinder.

[0027] Furthermore, the dispatching unit includes at least one of the following: hydrogen transport vehicle transportation, pipeline transportation.

[0028] Furthermore, an alarm unit is also provided, which is electrically connected to the correction unit.

[0029] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a management system for a hydrogen energy storage station, which predicts the specific time for dispatching hydrogen from the hydrogen energy storage station to the hydrogen refueling station through a prediction unit, and corrects the prediction value through a correction unit to achieve the optimal dispatch time, thereby saving costs and improving the economy and sustainability of hydrogen energy application. Attached Figure Description

[0030] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0031] Figure 1 This is a schematic diagram of the process of a management system for a hydrogen energy storage station according to the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0033] In the description of this invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "set on" another mechanism, it can be directly set on the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0034] like Figure 1 As shown, the present invention provides a management system for a hydrogen energy storage station, comprising:

[0035] Historical data storage unit: Stores the average daily hydrogen consumption of this hydrogen refueling station at different times. Specifically, different times refer to the time between each full hydrogen refueling and the next refueling within a year. Since the hydrogen demand of the hydrogen refueling station varies at different times during holidays and special circumstances (for example, summer and winter are peak hydrogen consumption periods; in summer, due to high temperatures, hydrogen fuel cell vehicles may consume more hydrogen to maintain air conditioning and ensure interior comfort; while in winter, due to low temperatures, hydrogen fuel cell vehicles need to consume more hydrogen for heating systems and other heating equipment to maintain interior temperature), the amount of hydrogen refueling at each time point will vary. Integrating and storing historical data in the storage unit makes it easy for the prediction unit to retrieve.

[0036] Actual data acquisition unit: Acquires the actual daily hydrogen consumption of the hydrogen refueling station at different times; specifically, installs dedicated sensors (e.g., pressure gauges, mass flow meters, thermal conductivity hydrogen sensors) on each hydrogen cylinder at the hydrogen refueling station, and calculates the remaining hydrogen amount in each cylinder using the collected pressure, temperature and other data.

[0037] Dispatch unit: Transports hydrogen from hydrogen storage stations to hydrogen refueling stations under its jurisdiction, and replenishes hydrogen at the refueling stations; specifically, it uses hydrogen transport vehicles and pipelines for transportation.

[0038] Hydrogen refueling stations, being decentralized and unstable, typically rely on hydrogen transport vehicles for transportation. However, hydrogen transport vehicles are affected by cost and transportation time. Therefore, it is necessary to activate the dispatch unit and begin dispatching when the hydrogen at the refueling station is about to run out, but it is also necessary to ensure that a sufficient amount of hydrogen is maintained before the arrival of the new hydrogen delivery.

[0039] Prediction Unit: Based on the historical daily hydrogen consumption for this period, the time for the next hydrogen replenishment is estimated; the specific steps for estimating the hydrogen replenishment time are as follows:

[0040] S1: Collect the total amount of hydrogen stored in the hydrogen storage cylinder group in the hydrogen refueling station and record it as M1;

[0041] S2: The average daily hydrogen consumption of hydrogen refueling stations during different time periods, denoted as M2.

[0042] S3: The calculated hydrogen replenishment time is tentatively set to T, where T = MI / M2.

[0043] Based on the average daily hydrogen consumption during this period in previous years, the next scheduling time T can be roughly estimated using the above formula. Due to the improvement of the hydrogen energy industry chain and the support and investment of governments in the hydrogen energy industry, the amount of hydrogen used has increased year by year. In other words, the historical data of each year cannot support the specific consumption duration of the actual consumption. Therefore, a correction unit is introduced to repeatedly correct the estimated value based on the actual daily consumption, so as to obtain a more accurate value and improve the accuracy of scheduling.

[0044] Correction Unit: This unit corrects the preliminary value obtained by the prediction unit based on the actual consumption value. The correction unit verifies the historical data stored in the historical data storage unit; specifically, the actual data acquisition unit obtains the daily hydrogen consumption and compares it with a set threshold. If the actual hydrogen consumption is within the threshold range, the predicted value based on the average value is used as the start time for the next hydrogen dispatch. If the actual hydrogen consumption exceeds the threshold range, the correction unit corrects the preliminary value. The threshold is the sum of the historical daily average hydrogen consumption of the hydrogen refueling station and the error value, and the error value can be set empirically.

[0045] The specific correction method for the pseudo-value T by the correction unit is as follows:

[0046] S11: Obtain the actual daily hydrogen consumption of the hydrogen refueling station in different time periods and record it as M3;

[0047] S12: Calculate the deviation between the actual hydrogen consumption and the average value, and convert it into the deviation ratio α; calculate the deviation ratio, α=(M3-M2) / M2;

[0048] S13: Confirm the range of the correction coefficient and set the positive and negative thresholds θ. When the deviation ratio is within this range, the correction coefficient is close to 1 (indicating slight adjustment or no adjustment); when the deviation ratio exceeds this range, the correction coefficient will increase or decrease accordingly; the positive and negative thresholds θ are set based on experience.

[0049] S14: Calculate the correction factor, correction factor = 1 + deviation ratio * correction factor; the correction factor is an adjustment parameter used to control the sensitivity of the correction factor to the deviation ratio;

[0050] S15: Apply the calculated correction coefficient to the planned time T; if the actual consumption is greater than the average, the correction coefficient is greater than 1, and T can be shortened (i.e., hydrogen is scheduled ahead of time); if the actual consumption is less than the average, the correction coefficient is less than 1 but greater than 0, and T can be extended (i.e., hydrogen is scheduled later).

[0051] For example, suppose that the historical average daily hydrogen consumption of a certain hydrogen refueling station during this period is M2 = 1000 kg;

[0052] S11: Get the consumption value M3 for a random day, M3 = 950;

[0053] S12: Calculate the daily deviation ratio α, α=(950-1000) / 1000=-0.05.

[0054] S13: Set positive and negative thresholds θ. Assuming that based on experience, we set θ to ±0.1 (i.e. 10%), the threshold represents the acceptable deviation range, that is, the deviation between the historical average hydrogen consumption and the actual hydrogen consumption is within a reasonable range.

[0055] S14: Calculate the correction factor for the day. Since the deviation ratio is within the threshold range, the correction factor is close to 1. Assuming it is 1 (slight adjustment or no adjustment), we can set a correction factor, such as 2, to calculate the correction factor; Correction factor = 1 + deviation ratio * correction factor = 1 + (-0.1) * 2 = 0.8;

[0056] S15: Apply the correction factor to the planned time T; assuming the original planned time T is a fixed time for hydrogen scheduling every day; according to the correction factor, we can adjust the scheduling time. Since the correction factor is 0.8, we can extend the original scheduling time to 1 / 0.8 = 1.25 times the original time, that is, delay the hydrogen scheduling by 25%.

[0057] By accumulating the calculated values ​​for each day to the total time T, the appropriate scheduling time can be more accurately estimated. Finally, the specific time obtained by the correction unit is transmitted to the scheduling unit to start scheduling to the hydrogen refueling station.

[0058] As a further extension of this patent, if the deviation ratio between the historical consumption M2 and the actual consumption M3 increases significantly over several consecutive days, an abnormal signal will be issued. By setting up an alarm unit, when the alarm unit receives an abnormal value, it will remind the hydrogen refueling station staff to compare the daily hydrogen sales volume. If they are different, there may be an emergency such as a leak, and the staff will be reminded to investigate the hydrogen refueling station.

[0059] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0060] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A management system for a hydrogen energy storage station, characterized in that, include: Historical data storage unit: stores the average daily hydrogen consumption of hydrogen refueling stations at different times; Actual data acquisition unit: Acquires the actual daily hydrogen consumption of hydrogen refueling stations at different times; Dispatch unit: Transports hydrogen from hydrogen storage stations to hydrogen refueling stations under its jurisdiction, and replenishes hydrogen at the refueling stations; Prediction unit: Calculates the time for the next hydrogen replenishment based on historical daily hydrogen consumption; Correction unit: Corrects the approximate value obtained by the prediction unit based on the actual consumption; The correction unit verifies the historical data stored in the historical data storage unit; that is, the actual data acquisition unit obtains the daily hydrogen consumption and compares it with the set threshold; if the actual hydrogen consumption is within the threshold range, the average value prediction is continued as the start time of the next hydrogen dispatch; if the actual hydrogen consumption exceeds the threshold range, the correction unit corrects the prediction value. The specific correction method for the pseudo-value T by the correction unit is as follows: R1: Obtain the actual daily hydrogen consumption of the hydrogen refueling station in different time periods and record it as M3; R2: Calculate the deviation between the actual hydrogen consumption and the average value, and convert it into the deviation ratio α; Calculate the deviation ratio, α = (M3 - M2) / M2; R3: Confirm the range of the correction coefficient and set positive and negative thresholds θ. When the deviation ratio is within this range, the correction coefficient is close to 1; when the deviation ratio exceeds this range, the correction coefficient is increased or decreased accordingly; the positive and negative thresholds θ are set based on experience. R4: Calculate the correction factor, correction factor = 1 + deviation ratio * correction factor; The correction factor is an adjustment parameter used to control the sensitivity of the correction coefficient to the proportion of deviation. R5: Apply the calculated correction factor to the correction of the proposed time T; If the actual consumption is greater than the average, and the correction factor is greater than 1, then T can be shortened. If the actual consumption is less than the average, and the correction factor is less than 1 but greater than 0, then T can be extended.

2. The management system for a hydrogen energy storage station as described in claim 1, characterized in that, The specific steps for determining the hydrogen replenishment time are as follows: S1: Collect the total amount of hydrogen stored in the hydrogen storage cylinder group in the hydrogen refueling station and record it as M1; S2: The average daily hydrogen consumption of hydrogen refueling stations during different time periods, denoted as M2; S3: The calculated hydrogen replenishment time is tentatively set to T, where T = MI / M2.

3. A management system for a hydrogen energy storage station as described in claim 2, characterized in that, The threshold is the sum of the historical daily average hydrogen consumption at hydrogen refueling stations and the error value.

4. A management system for a hydrogen energy storage station as described in claim 3, characterized in that, The actual data acquisition unit includes at least one of the following: a pressure gauge, a mass flow meter, and a thermal conductivity hydrogen sensor for testing the pressure inside a hydrogen cylinder.

5. A management system for a hydrogen energy storage station as described in claim 4, characterized in that, The dispatching unit includes at least one of the following: hydrogen transport vehicle transportation and pipeline transportation.

6. A management system for a hydrogen energy storage station as described in claim 1, characterized in that, An alarm unit is also provided, which is electrically connected to the correction unit.

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