Hydrogen transmission planning method and device for hydrogen electricity energy network

Abstract

The invention relates to a hydrogen transmission planning method and device for a hydrogen electricity energy network. The method comprises the steps that a hydrogen energy supply pipe network based on pipeline hydrogen transmission is constructed according to a new energy end and a hydrogen load end; the hydrogen supply cost of the first hydrogen transmission supply network is calculated based on the electric power parameter and the cost parameter of the new energy end; the hydrogen supply cost of the second hydrogen transmission supply network is calculated based on the electric power parameter and the cost parameter of the hydrogen load end; and comparing and screening to obtain an optimal hydrogen energy supply pipe network. According to the method, different hydrogen transmission scenes can be adapted based on the difference between the new energy end hydrogen production project and the load end on-site hydrogen production project, the hydrogen energy supply requirements under different resource distribution and load layouts are effectively covered, and the scene adaptability and practicability of a planning scheme are improved. And meanwhile, a leveling hydrogen production and transmission cost model is introduced, so that cost misjudgment caused by parameter omission or computational logic difference is avoided, and objective data support is provided for investment and construction of a hydrogen electricity energy network.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy transportation, in particular to a hydrogen transportation planning method and device of a hydrogen and electricity energy network. BACKGROUND

[0002] Hydrogen energy is an important part of future energy systems. Due to the difference between new energy resource distribution and hydrogen energy market distribution, energy transportation is needed to match supply and demand. At present, hydrogen energy transportation includes two main modes: hydrogen energy pipeline transportation and hydrogen production by using grid electricity.

[0003] However, the existing planning method lacks a systematic cost comparison framework for the two modes. On the one hand, the existing planning method does not clearly distinguish the differences in project composition at the hydrogen production and storage and transportation links between the new energy end and the load end (such as the need for additional hydrogen compression and long-distance pipeline at the new energy end, and the dependence on grid electricity price at the load end); on the other hand, the cost calculation does not cover the whole life cycle dimension, only single consideration of construction cost or short-term operation cost, ignoring the influence of key parameters such as project discount rate, system utilization rate, and residual value after operation period on the total cost, resulting in deviation of the planning result and inability to accurately match the optimal hydrogen energy supply scheme under different scenarios.

[0004] And the existing technology is fuzzy in defining the coordination relationship of each unit in the hydrogen and electricity energy network, and it is difficult to quantify the influence of different power supply structures on hydrogen production cost; at the same time, there is a lack of unified cost calculation model for hydrogen production and transportation, which cannot objectively compare the economy of the two modes, restricting the large-scale landing and efficient operation of the hydrogen and electricity energy network. SUMMARY

[0005] To overcome the deficiencies of the prior art, the present application provides a hydrogen and electricity energy network hydrogen transportation planning method and device, which specifically adopts the following technical solutions:

[0006] A hydrogen and electricity energy network hydrogen transportation planning method, the method comprising the following steps:

[0007] A hydrogen energy supply pipe network based on pipeline hydrogen transportation is constructed according to the new energy end and the hydrogen load end, the hydrogen energy supply pipe network at least comprising a first hydrogen transportation supply network based on hydrogen production at the new energy end and a second hydrogen transportation supply network based on hydrogen production at the hydrogen load end;

[0008] The hydrogen supply cost of the first hydrogen transportation supply network is calculated based on the power parameters and cost parameters of the new energy end;

[0009] The hydrogen supply cost of the second hydrogen transportation supply network is calculated based on the power parameters and cost parameters of the hydrogen load end;

[0010] The hydrogen supply costs of the first hydrogen transportation supply network and the second hydrogen transportation supply network are compared to obtain the best hydrogen energy supply pipe network.

[0011] Optionally, the step of obtaining the hydrogen supply cost of the first hydrogen supply network based on the power parameter and the cost parameter of the new energy end comprises:

[0012] The project composition, the project operation period, the project discount rate, the system utilization rate, and the system capacity of the first hydrogen supply network are analyzed;

[0013] The construction cost parameter, the operation cost parameter, and the residual value after the operation period of each project are obtained based on the project composition and the project operation period;

[0014] The first cost parameter is obtained based on the construction cost parameter, the operation cost parameter, the residual value after the operation period, and the project discount rate of each project;

[0015] The second cost parameter is obtained based on the system utilization rate, the system capacity, and the project discount rate of the first hydrogen supply network;

[0016] The hydrogen supply cost of the first hydrogen supply network is calculated based on the first cost parameter and the second cost parameter.

[0017] Optionally, the step of obtaining the hydrogen supply cost of the second hydrogen supply network based on the power parameter and the cost parameter of the hydrogen load end comprises:

[0018] The project composition, the project operation period, the project discount rate, the system utilization rate, and the system capacity of the second hydrogen supply network are analyzed;

[0019] The construction cost parameter, the operation cost parameter, and the residual value after the operation period of each project in the second hydrogen supply network are obtained based on the project composition and the project operation period;

[0020] The third cost parameter is obtained based on the construction cost parameter, the operation cost parameter, the residual value after the operation period, and the project discount rate of each project;

[0021] The fourth cost parameter is obtained based on the system utilization rate, the system capacity, and the project discount rate of the second hydrogen supply network;

[0022] The hydrogen supply cost of the second hydrogen supply network is calculated based on the third cost parameter and the fourth cost parameter.

[0023] Optionally, the step of comparing the hydrogen supply cost of the first hydrogen supply network and the second hydrogen supply network to screen the best hydrogen energy supply network comprises:

[0024] The hydrogen supply cost of the first hydrogen supply network and the second hydrogen supply network is compared respectively;

[0025] When the hydrogen supply cost of the first hydrogen transportation supply network is higher than the hydrogen supply cost of the second hydrogen transportation supply network, the second hydrogen transportation supply network is selected as the optimal hydrogen energy supply pipeline network;

[0026] When the hydrogen supply cost of the first hydrogen transportation supply network is lower than the hydrogen supply cost of the second hydrogen transportation supply network, the first hydrogen transportation supply network is selected as the optimal hydrogen energy supply pipeline network;

[0027] When the hydrogen supply cost of the first hydrogen transportation supply network is equal to the hydrogen supply cost of the second hydrogen transportation supply network, either the first hydrogen transportation supply network or the second hydrogen transportation supply network is selected as the optimal hydrogen energy supply pipeline network.

[0028] Optionally, the construction cost parameter at least includes land cost of the corresponding project and equipment purchase and installation cost of the corresponding project; and the operation cost parameter at least includes annual operation and maintenance cost of the corresponding project and annual electricity cost of the corresponding project.

[0029] Optionally, the calculation formula of the levelized hydrogen production cost of the first hydrogen transportation supply network is:

[0030] C El +C PS_P +C PS_C -R PS (1+i) -N -R El (1+i) -N

[0031]

[0032] In the above formula, LCOH1 is the levelized hydrogen production cost of the first hydrogen transportation supply network; N is the operation period of the project; i is the discount rate of the project; C El is the investment and construction cost of the hydrogen production project located at the new energy end, including land cost, purchase and installation cost of the water electrolysis hydrogen production device and the hydrogen storage device; C PS_P is the investment and construction cost of the hydrogen transportation unit, including land cost, purchase and installation cost of the pipeline material; C PS_C is the investment and construction cost of the hydrogen compression unit, including land cost, purchase and installation cost of the hydrogen compressor and the hydrogen storage container; R El is the residual value after the operation period of the hydrogen production project; R PS is the residual value after the operation period of the hydrogen storage and transportation project; C El_OM is the annual operation and maintenance cost of the hydrogen production project located at the new energy end, including water cost, labor cost of maintenance personnel and maintenance cost; C PS_OM is the annual operation and maintenance cost of the hydrogen storage and transportation project, including labor cost of maintenance personnel and maintenance cost; C El_E is the annual hydrogen production electricity cost; C PS_Eis the annual compression electricity cost of the hydrogen compression unit; λ1 is the system utilization rate; M1 is the system capacity.

[0033] Optionally, the calculation formula of the second hydrogen supply network for the hydrogen supply cost is:

[0034]

[0035] In the above formula, LCOH2 is the second hydrogen supply network for the hydrogen supply cost; N is the project operation period; i is the project discount rate; C' El is the investment and construction cost of the hydrogen production project at the load end, including land cost, electrolytic water hydrogen production device and hydrogen storage device purchase and installation cost; R' El is the residual value after the project operation period; C' El_OM is the annual operation and maintenance cost of the hydrogen production project, including water cost, maintenance personnel labor cost and maintenance cost; C' El_E is the electricity cost of the hydrogen production project at the load end, which is the electricity price of the terminal power grid; λ2 is the system utilization rate of the second hydrogen supply network; M2 is the system capacity of the second hydrogen supply network.

[0036] Optionally, the first hydrogen supply network includes a new energy power generation unit, a first hydrogen production project, a hydrogen storage and transportation project, and a hydrogen load unit,

[0037] The new energy power generation unit is used to provide power source for the first hydrogen production project; the new energy power generation unit includes a new energy power station, a storage unit and a supporting power source, wherein the new energy power station directly supplies power to the first hydrogen production project, and the storage unit and the supporting power source respectively supply complementary power to the first hydrogen production project;

[0038] The first hydrogen production project includes a first electrolytic water hydrogen production unit, which receives power from the new energy power generation unit and produces hydrogen by electrolysis; the first electrolytic water hydrogen production unit includes an electrolytic water hydrogen production device and a hydrogen storage device, and the hydrogen produced by the electrolytic water hydrogen production device is stored through the hydrogen storage device;

[0039] The hydrogen storage and transportation project includes a hydrogen compression unit and a hydrogen transportation unit, the hydrogen compression unit is used to compress the hydrogen produced by the electrolytic water hydrogen production unit and input into the hydrogen transportation unit; the hydrogen transportation unit is used to transport the compressed hydrogen to the hydrogen load unit;

[0040] The hydrogen load unit receives the hydrogen transported by the hydrogen transportation unit and supplies hydrogen consumption to the user.

[0041] Optionally, the second hydrogen supply network includes a new energy power generation unit, a power transmission network unit, a second hydrogen production project and a hydrogen load unit;

[0042] The new energy power generation unit is configured to supply power to the power transmission network unit; the new energy power generation unit comprises a new energy power station, an energy storage unit and a supporting power source, wherein the new energy power station directly supplies power to the power transmission network unit, and the energy storage unit and the supporting power source respectively supply power to the power transmission network unit;

[0043] The power transmission network unit is configured to transmit power from the new energy power generation unit to the second hydrogen production project;

[0044] The second hydrogen production project comprises a second water electrolysis hydrogen production unit, which receives power from the power transmission network unit and produces hydrogen by electrolysis; the second water electrolysis hydrogen production unit comprises a water electrolysis hydrogen production device and a hydrogen storage device, and the hydrogen produced by the water electrolysis hydrogen production device is stored in the hydrogen storage device;

[0045] A hydrogen load unit receives hydrogen produced by the second hydrogen production project and supplies hydrogen to users.

[0046] In addition, the present application also discloses a hydrogen transmission planning device of a hydrogen power energy network, which comprises:

[0047] A network construction module is configured to construct a hydrogen energy supply pipe network based on pipeline hydrogen transmission according to a new energy end and a hydrogen load end, wherein the hydrogen energy supply pipe network comprises at least a first hydrogen transmission supply network based on hydrogen production of the new energy end and a second hydrogen transmission supply network based on hydrogen production of the hydrogen load end;

[0048] A first cost calculation module is configured to calculate a hydrogen supply cost of the first hydrogen transmission supply network based on power parameters and cost parameters of the new energy end;

[0049] A second cost calculation module is configured to calculate a hydrogen supply cost of the second hydrogen transmission supply network based on power parameters and cost parameters of the hydrogen load end;

[0050] A network screening module is configured to compare the hydrogen supply costs of the first hydrogen transmission supply network and the second hydrogen transmission supply network, and screen an optimal hydrogen energy supply pipe network.

[0051] Advantages

[0052] The technical scheme of the present application has the following advantages:

[0053] The hydrogen transportation planning method of the hydrogen energy network of the present application can adapt to different scenarios of new energy enrichment but far from load and load concentration and convenient power grid, effectively cover hydrogen energy supply demand under different resource distribution and load layout, and improve the scene adaptability and practicality of the planning scheme. Meanwhile, the method introduces a hydrogen production and transportation cost leveling model, integrates the key parameters in the whole life cycle of the project into the cost calculation, breaks through the cost accounting limitations of the existing technology, quantifies and integrates each parameter to ensure that the cost calculation of different modes has a unified standard and comparability, avoids cost misjudgment caused by parameter omission or calculation logic difference. Then, using the quantitative decision logic of cost comparison, the existing supply mode relying on subjective experience selection can be broken through, the hydrogen production and transportation cost leveling of the two modes is directly compared, the economic comparison is objectively compared, and then the optimal hydrogen supply mode is obtained, ensuring the economic optimization of the planning scheme, and providing objective data support for the investment and construction of the hydrogen energy network. BRIEF DESCRIPTION OF DRAWINGS

[0054] Figure 1 A flowchart of a hydrogen transportation planning method of a hydrogen energy network in an embodiment of the present application.

[0055] Figure 2 A structure diagram of a hydrogen energy supply pipe network in an embodiment of the present application.

[0056] Figure 3 A hydrogen production and transportation cost comparison diagram of different hydrogen transportation schemes in an embodiment of the present application.

[0057] Figure 4 A structure diagram of a hydrogen transportation planning device of a hydrogen energy network in an embodiment of the present application.

[0058] Figure 5 A structure diagram of an electronic device in an embodiment of the present application. DETAILED DESCRIPTION

[0059] The present application will be further described below with reference to the accompanying drawings. The following examples are only used to more clearly illustrate the technical solutions of the present application, and cannot be used to limit the protection scope of the present application. It should be pointed out that the following detailed description is exemplary, and is intended to provide further description of the present application.

[0060] In combination with Figure 1 The present application discloses a hydrogen transportation planning method of a hydrogen energy network, which realizes the optimization of the economy and stability of hydrogen energy supply through the logic closed loop of "constructing a double supply network-precise cost calculation-scheme comparison and screening", and the specific process includes:

[0061] Step one: according to the geographical distribution and demand characteristics of the new energy end and the hydrogen load end, a hydrogen energy supply pipe network based on pipeline hydrogen transportation is constructed, which at least includes a first hydrogen transportation supply network based on new energy end hydrogen production and a second hydrogen transportation supply network based on hydrogen load end hydrogen production.

[0062] In combination Figure 2 As shown, the first hydrogen transportation supply network in the embodiment at least includes a new energy power generation unit, a first hydrogen production project, a hydrogen storage and transportation project, and a hydrogen load unit, which cooperatively realize the integration of "new energy power generation, on-site hydrogen production, hydrogen storage and transportation". The new energy power generation unit is used to provide power source for the first hydrogen production project; the new energy power generation unit includes a new energy power station, an energy storage unit and a supporting power source, wherein the new energy power station directly supplies power to the first hydrogen production project, the energy storage unit and the supporting power source respectively supply power to the first hydrogen production project, the energy storage unit compensates for the intermittency of new energy power generation, and the supporting power source deals with the power gap under extreme weather. The first hydrogen production project includes a first water electrolysis hydrogen production unit, which receives power from the new energy power generation unit and produces hydrogen by electrolysis; the first water electrolysis hydrogen production unit includes a water electrolysis hydrogen production device and a hydrogen storage device, the hydrogen produced by the water electrolysis hydrogen production device is stored through the hydrogen storage device to avoid the time sequence mismatch between hydrogen production and hydrogen consumption, when the hydrogen load fluctuates, the hydrogen storage device can quickly compensate, and the supply continuity is guaranteed. The hydrogen storage and transportation project includes a hydrogen compression unit and a hydrogen transportation unit, the hydrogen compression unit is used to compress the hydrogen produced by the water electrolysis hydrogen production unit and input into the hydrogen transportation unit; the hydrogen transportation unit is used to transport the compressed hydrogen to the hydrogen load unit. The hydrogen load unit as a hydrogen consumption terminal accepts the hydrogen transported by the hydrogen transportation unit and supplies hydrogen to users for consumption.

[0063] Further, as Figure 2As shown, the second hydrogen supply network includes a new energy power generation unit, a power grid unit, a second hydrogen production project, and a hydrogen load unit, and the core logic is "new energy power long-distance transmission-load end on-site hydrogen production", which is suitable for scenarios where hydrogen loads are dispersed and hydrogen pipeline construction is difficult. The new energy power generation unit is used to transmit power to the power grid unit; the new energy power generation unit includes a new energy power station, a storage unit and a supporting power source, wherein the new energy power station directly supplies power to the power grid unit, and the storage unit and the supporting power source supply power to the power grid unit respectively. The power grid unit is used to transmit power from the new energy power generation unit to the second hydrogen production project, which can generally use the existing mature power grid to transmit power without the need for additional construction of a dedicated hydrogen pipeline from the new energy end to the load end, thereby reducing the initial investment of cross-regional projects. The second hydrogen production project includes a second water electrolysis hydrogen production unit, which produces hydrogen on site and directly supplies surrounding users, completely eliminating the loss of long-distance hydrogen transportation and flexibly matching load changes. The second water electrolysis hydrogen production unit receives power from the power grid unit and produces hydrogen by electrolysis. The second water electrolysis hydrogen production unit includes an electrolytic water hydrogen production device and a hydrogen storage device, and the hydrogen produced by the electrolytic water hydrogen production device is stored by the hydrogen storage device. The hydrogen load unit receives hydrogen produced by the second hydrogen production project and supplies hydrogen to users for consumption.

[0064] Step two: calculate the hydrogen supply cost of the first hydrogen supply network based on the power parameters and cost parameters of the new energy end, the core of which is to realize the fine quantification of cost through the whole life cycle cost decomposition and the equalization measurement set. The specific process is as follows:

[0065] Analyze the project composition, project operation period, project discount rate, system utilization rate and system capacity of the first hydrogen supply network;

[0066] Based on each project composition and project operation period, the construction cost parameters, operation cost parameters and residual value after operation period of the corresponding project are obtained; generally, the construction cost parameters at least include the land cost of the corresponding project and the equipment purchase and installation cost of the corresponding project, such as the investment construction cost of the hydrogen production project, including land cost, electrolytic water hydrogen production and hydrogen storage device purchase and installation cost; the hydrogen storage and transportation project includes hydrogen energy pipeline investment construction cost, including land cost, pipeline material purchase and installation cost, and hydrogen energy compressor station investment construction cost, including land cost, hydrogen compressor, hydrogen storage container purchase and installation cost. The operation cost parameters at least include the annual operation and maintenance cost of the corresponding project and the annual electricity cost of the corresponding project, such as the annual operation and maintenance cost of the hydrogen production project, including water cost, labor cost of maintenance personnel, repair cost; the annual operation and maintenance cost of the hydrogen storage and transportation project, including labor cost of maintenance personnel, repair cost; and the annual hydrogen production electricity cost and the annual compression electricity cost of the compressor station.

[0067] The first cost parameter is obtained based on the construction cost parameter, the operation cost parameter, the residual value after the operation period and the project discount rate of each project;

[0068] The second cost parameter is obtained based on the system utilization rate, the system capacity and the project discount rate of the first hydrogen supply network;

[0069] The first hydrogen supply network levelized hydrogen production cost is calculated based on the first cost parameter and the second cost parameter.

[0070] Specifically, the calculation formula of the first hydrogen supply network levelized hydrogen production cost is as follows:

[0071] C El +C PS_P +C PS_C -R PS (1+i) -N -R El (1+i) -N

[0072]

[0073] In the above formula, LCOH1 is the first hydrogen supply network levelized hydrogen production cost; N is the operation period of the project; i is the project discount rate; C El is the investment and construction cost of the hydrogen production project located at the new energy end, including the land cost, the purchase and installation cost of the water electrolysis hydrogen production device and the hydrogen storage device; C PS_P is the investment and construction cost of the hydrogen gas transportation unit, including the land cost and the purchase and installation cost of the pipeline material; C PS_C is the investment and construction cost of the hydrogen gas compression unit, including the land cost, the purchase and installation cost of the hydrogen gas compressor and the hydrogen storage container; R El is the residual value after the operation period of the hydrogen production project; R PS is the residual value after the operation period of the hydrogen storage and transportation project; C El_OM is the annual operation and maintenance cost of the hydrogen production project located at the new energy end, including the water cost, the labor cost of the maintenance personnel and the maintenance cost; C PS_OM is the annual operation and maintenance cost of the hydrogen storage and transportation project, including the labor cost of the maintenance personnel and the maintenance cost; C El_E is the annual hydrogen production electricity cost; C PS_E is the annual compression electricity cost of the hydrogen gas compression unit; λ1 is the system utilization rate; M1 is the system capacity.

[0074] The first hydrogen supply network cost calculation formula for the hydrogen production and supply can convert the costs and outputs at different time nodes into the current present value, eliminate the time value difference, realize fair comparison across projects and across periods, and clearly analyze the proportion of each cost item, thereby helping to identify the cost optimization focus. In addition, the formula considers the volatility of new energy power generation, so that the cost estimation is more in line with the actual operation scenario.

[0075] Step three: calculating the hydrogen supply cost of the second hydrogen supply network based on the power parameters and cost parameters of the hydrogen load end. The specific steps are as follows:

[0076] Analyzing the project composition, project operation period, project discount rate, system utilization rate, and system capacity of the second hydrogen supply network;

[0077] Based on the project composition and project operation period in the second hydrogen supply network, the construction cost parameters, operation cost parameters, and post-operation residual value of the corresponding project are obtained. Generally, the construction cost parameters in the second hydrogen supply network at least include the land cost of the corresponding project and the equipment purchase and installation cost of the corresponding project, such as the investment and construction cost of hydrogen production at the load end, including land cost, electrolytic water hydrogen production, and hydrogen storage device purchase and installation cost. The operation cost parameters at least include the annual operation and maintenance cost of the corresponding project and the annual electricity cost of the corresponding project, such as the annual operation and maintenance cost of the hydrogen production project, including water cost, labor cost of maintenance personnel, and repair cost; and the electricity cost of hydrogen production at the load end.

[0078] Based on the construction cost parameters, operation cost parameters, post-operation residual value, and project discount rate of each project, the third cost parameter is obtained;

[0079] Based on the system utilization rate, system capacity, and project discount rate of the second hydrogen supply network, the fourth cost parameter is obtained;

[0080] Based on the third cost parameter and the fourth cost parameter, the second hydrogen supply network cost is obtained.

[0081] Further, the calculation formula of the second hydrogen supply network cost is as follows:

[0082]

[0083] In the above formula, LCOH2 is the second hydrogen supply network cost; N is the project operation period; i is the project discount rate; C' El is the investment and construction cost of the hydrogen production project at the load end, including land cost, electrolytic water hydrogen production device, and hydrogen storage device purchase and installation cost; R' El is the post-operation residual value; C' El_OMThe annual operation and maintenance costs for the hydrogen production project include water costs, labor costs for maintenance personnel, and repair costs; C′ El_E λ2 represents the electricity cost of the hydrogen production project located at the load end, which is the electricity price of the terminal grid; λ2 represents the system utilization rate of the second hydrogen supply network; and M2 represents the system capacity of the second hydrogen supply network.

[0084] Similarly, in this embodiment, the levelized hydrogen production and transportation cost of the second hydrogen supply network also adopts the full life cycle leveling logic, which eliminates the differences in investment scale, operation cycle and parameter characteristics. This can verify the economics of the load-side hydrogen production mode in a specific scenario and provide data support for subsequent scheme selection.

[0085] Step 4: Compare the hydrogen supply costs of the first and second hydrogen supply networks to select the optimal hydrogen energy supply network.

[0086] Compare the hydrogen supply costs of the first and second hydrogen supply networks respectively;

[0087] When the hydrogen supply cost of the first hydrogen supply network is higher than that of the second hydrogen supply network, the second hydrogen supply network is selected as the optimal hydrogen energy supply network.

[0088] When the hydrogen supply cost of the first hydrogen supply network is less than that of the second hydrogen supply network, the first hydrogen supply network is selected as the optimal hydrogen energy supply network.

[0089] When the hydrogen supply cost of the first hydrogen supply network is equal to the hydrogen supply cost of the second hydrogen supply network, either the first or the second hydrogen supply network shall be selected as the optimal hydrogen energy supply network.

[0090] The optimal hydrogen supply network selected using the above method ensures the best economic efficiency for hydrogen transportation. Furthermore, whether in remote areas rich in renewable energy sources or in load centers with well-developed power grids, this method can select the most suitable supply mode, avoiding resource waste caused by subjective experience-based planning and maximizing scenario adaptability. Moreover, the cost calculation parameters of this method can be dynamically updated with technological iterations and policy adjustments, ensuring the long-term applicability of the planning method and reserving room for future optimization.

[0091] Furthermore, this embodiment constructs a typical integrated hydrogen production and transportation system based on the above scheme, wherein the hydrogen transportation capacity is 100,000 tons / year and the transportation distance is 500 / 1000 / 2000km. The levelized cost of hydrogen supply is compared and analyzed under the two modes of power transmission mode (second hydrogen supply network) and hydrogen transmission mode (first hydrogen supply network) when the terminal obtains the same amount of hydrogen.

[0092] For hydrogen delivery mode, semi-off-grid hydrogen production scheme is adopted, which is mainly off-grid hydrogen production and supplemented by grid-connected hydrogen production. Combined with pure hydrogen pipeline hydrogen delivery scheme, scheme 1 is set, at this time the pipeline utilization rate is 60%, and the cost of different delivery distances is shown in Table 1:

[0093] Table 1

[0094] Transport distance 500km 1000km 2000km Levelized hydrogen production and transport cost (yuan / kg) 36.043 38.711 43.652 Levelized hydrogen production cost (yuan / kg) 33.130 33.130 33.130 Levelized hydrogen transport cost (yuan / kg) 2.912 5.581 10.522

[0095] For hydrogen delivery mode, semi-off-grid hydrogen production scheme is adopted, which is mainly off-grid hydrogen production and supplemented by grid-connected hydrogen production. Combined with pure hydrogen pipeline hydrogen delivery scheme, scheme 1 is set, at this time the pipeline utilization rate is 60%, and the cost of different delivery distances is shown in Table 1:

[0096] Table 2

[0097] Transport distance 500km 1000km 2000km Levelized hydrogen production and transport cost (yuan / kg) 38.178 40.061 43.477 Levelized hydrogen production cost (yuan / kg) 36.099 36.099 36.099 Levelized hydrogen transport cost (yuan / kg) 2.079 3.962 7.378

[0098] For electricity delivery mode, scheme 3 is set, and the price difference of grid electricity between sending end and receiving end is 0.1 yuan / kWh, and the land and labor cost difference is 20%. Therefore, the cost of different delivery distances is shown in Table 3:

[0099] Table 3

[0100] Transport distance 500km 1000km 2000km Levelized hydrogen production and transport cost (yuan / kg) 42.777 43.845 44.379 Allocated hydrogen transport cost (yuan / kg) 1.068 2.136 2.669

[0101] From Tables 1-3, it can be seen that in the integrated production and delivery system, the proportion of hydrogen production cost is much higher than that of hydrogen delivery cost, and the proportion of hydrogen production power consumption (electricity cost) in hydrogen production cost is high, so the main factor affecting hydrogen leveling cost is hydrogen production power consumption.

[0102] Combined Figure 3 , which is a comparison chart of production and delivery costs of the above several hydrogen delivery modes, wherein Figure 3The curve located at the lowermost position is the hydrogen production and transportation cost curve of scheme 1, the curve located at the uppermost position is the hydrogen production and transportation cost curve of scheme 3, and the curve located in the middle position is the hydrogen production and transportation cost curve of scheme 2. By comparing the above transportation modes, under the scenario of transporting 100,000 tons of hydrogen per year, when the difference between the sending end and the receiving end grid electricity price is 0.1 yuan / kWh, and the land and labor costs differ by 20%, the hydrogen transmission mode has a lower electricity price allocation (better economic efficiency of hydrogen transmission), and the system's hydrogen production and transportation cost is not sensitive to the change of the transportation distance. In the two schemes of the hydrogen transmission mode, the average hydrogen production electricity cost of the semi-off-grid hydrogen production + pure hydrogen pipeline scheme is the lowest, so the hydrogen production cost is low, and the overall hydrogen production and transportation cost is also relatively low, but since the hydrogen production fluctuation is large at this time, the pipeline utilization rate is low, and when the transportation distance increases, the system's hydrogen production and transportation cost rises rapidly. The grid-connected hydrogen production + pure hydrogen pipeline scheme can utilize grid electricity, and the overall utilization rate of the system is high, so when the transportation distance increases, the system's hydrogen production and transportation cost rises at a smaller rate, but since the sending end grid electricity price also includes the distribution electricity price and auxiliary service electricity price, the average hydrogen production electricity cost is high. By comparing the semi-off-grid hydrogen production + pure hydrogen pipeline scheme and the grid-connected hydrogen production + pure hydrogen pipeline scheme, it is found that the grid-connected hydrogen production + pure hydrogen pipeline scheme is more economical only in the long-distance (transportation distance greater than 2000km) scenario.

[0103] According to the comprehensive calculation results, the hydrogen supply cost of the semi-off-grid hydrogen production scheme in the hydrogen transmission mode, which mainly uses grid hydrogen production and supplements with grid-connected heat preservation, is the lowest, so this scheme is recommended.

[0104] In addition, as shown in Figure 4 , the application also discloses a hydrogen transmission planning device of a hydrogen and electricity energy network, the device comprises:

[0105] A grid construction module is configured to construct a hydrogen energy supply pipe network based on pipeline hydrogen transmission according to a new energy end and a hydrogen load end, and the hydrogen energy supply pipe network at least comprises a first hydrogen transmission supply network based on new energy end hydrogen production and a second hydrogen transmission supply network based on hydrogen load end hydrogen production.

[0106] A first cost calculation module is configured to calculate a hydrogen supply cost of the first hydrogen transmission supply network based on power parameters and cost parameters of the new energy end.

[0107] A second cost calculation module is configured to calculate a hydrogen supply cost of the second hydrogen transmission supply network based on power parameters and cost parameters of the hydrogen load end.

[0108] A grid screening module is configured to compare the hydrogen supply costs of the first hydrogen transmission supply network and the second hydrogen transmission supply network, and screen an optimal hydrogen energy supply pipe network.

[0109] The device provided by the embodiment of the present application can realize Figure 1 The various processes realized by the method embodiment will not be repeated here.

[0110] As shown in Figure 5 The embodiment of the present application also provides an electronic device, which comprises a processor and a memory, a program or instructions stored on the memory and executable on the processor, and each process of the method embodiment shown in Figure 1 The same technical effects can be achieved, and thus the various processes of the method embodiment will not be repeated here.

[0111] The embodiment of the present application also provides a readable storage medium, which stores a program or instructions, and each process of the method embodiment shown above can be realized when the program or instructions are executed by a processor, and the same technical effects can be achieved, and thus the various processes of the method embodiment will not be repeated here. Figure 1

[0112] The embodiment of the present application also provides a computer program product, which comprises computer instructions, and each process of the method embodiment shown above can be realized when the computer instructions are executed by a processor, and the same technical effects can be achieved, and thus the various processes of the method embodiment will not be repeated here. Figure 1

[0113] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The serial number of the above embodiment of the present application is only for description, not representing the advantages and disadvantages of the embodiment.

[0114] It should be noted that in this paper, the term "including", "containing" or any other variant thereof is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0115] ​​In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other manners. The described device embodiments are merely illustrative, for example, the division of the units is only a logical function division, and there can be another division manner for actual implementation, for example, a plurality of units or components can be combined or integrated into another device, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the various components shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0116] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units; they can be located in one place, or distributed on a plurality of network units; and some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0117] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be realized in the form of hardware or in the form of hardware plus software functional units.

[0118] Those of ordinary skill in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by a program instructing related hardware, and the foregoing program can be stored in a computer readable storage medium, and the program executes the steps of the above-mentioned method embodiments when executed; and the foregoing storage medium includes mobile storage devices, read-only memories (ROM), magnetic discs or optical discs, and various media that can store program codes.

[0119] Alternatively, the integrated units of the present application, if implemented in the form of software functional modules and sold or used as independent products, can also be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the embodiments of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, and includes a plurality of instructions for causing an apparatus (which can be a terminal or a platform, etc.) to execute all or part of the methods described in the embodiments of the present application. The foregoing storage medium includes mobile storage devices, ROM, magnetic discs or optical discs, and various media that can store program codes.

[0120] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, some improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A hydrogen transport planning method for a hydrogen-electric energy network, characterized in that, The method includes the following steps: A hydrogen energy supply network based on pipeline hydrogen transportation is constructed according to the new energy end and the hydrogen load end. The hydrogen energy supply network includes at least a first hydrogen supply network based on hydrogen production at the new energy end and a second hydrogen supply network based on hydrogen production at the hydrogen load end. The hydrogen supply cost of the first hydrogen transmission network is calculated based on the power and cost parameters of the new energy source. The hydrogen supply cost of the second hydrogen transmission network is calculated based on the power and cost parameters at the hydrogen load end. By comparing the hydrogen supply costs of the first and second hydrogen supply networks, the optimal hydrogen supply network is selected.

2. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 1, characterized in that, The steps for calculating the hydrogen supply cost of the first hydrogen supply network based on the power and cost parameters of the new energy source include: The analysis yielded the project composition, project operation cycle, project discount rate, system utilization rate, and system capacity of the first hydrogen supply network. Based on the components and operation cycle of each project, obtain the construction cost parameters, operation cost parameters and residual value after the operation period for the corresponding projects. The first cost parameter is obtained based on the construction cost parameters, operating cost parameters, residual value after the operating period, and the project discount rate for each project. The second cost parameter is obtained based on the system utilization rate, system capacity, and project discount rate of the first hydrogen supply network. The levelized cost of hydrogen production and transportation for the first hydrogen supply network is calculated based on the first and second cost parameters.

3. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 1, characterized in that, The steps for calculating the hydrogen supply cost of the second hydrogen supply network based on the power and cost parameters at the hydrogen load end include: The analysis yielded the project composition, project operation cycle, project discount rate, system utilization rate, and system capacity of the second hydrogen supply network. Based on the composition and operation cycle of each project in the second hydrogen supply network, the construction cost parameters, operation cost parameters and residual value after the operation period of the corresponding projects are obtained respectively. The third cost parameter is obtained based on the construction cost parameters, operating cost parameters, residual value after the operating period, and the project discount rate of each project. The fourth cost parameter is obtained based on the system utilization rate, system capacity, and project discount rate of the second hydrogen supply network. The levelized cost of hydrogen production and transportation for the second hydrogen supply network is calculated based on the third and fourth cost parameters.

4. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 1, characterized in that, The step of comparing the hydrogen supply costs of the first and second hydrogen supply networks to select the optimal hydrogen supply network includes: Compare the hydrogen supply costs of the first and second hydrogen supply networks respectively; When the hydrogen supply cost of the first hydrogen supply network is higher than that of the second hydrogen supply network, the second hydrogen supply network is selected as the optimal hydrogen energy supply network. When the hydrogen supply cost of the first hydrogen supply network is less than that of the second hydrogen supply network, the first hydrogen supply network is selected as the optimal hydrogen energy supply network. When the hydrogen supply cost of the first hydrogen supply network is equal to the hydrogen supply cost of the second hydrogen supply network, either the first or the second hydrogen supply network shall be selected as the optimal hydrogen energy supply network.

5. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 2 or 3, characterized in that, The construction cost parameters include at least the land cost of the corresponding project and the equipment purchase and installation cost of the corresponding project; the operating cost parameters include at least the annual operation and maintenance cost of the corresponding project and the annual electricity cost of the corresponding project.

6. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 2, characterized in that, The formula for calculating the levelized cost of hydrogen production and transportation for the first hydrogen supply network is as follows: In the above formula: LCOH1 is the levelized cost of hydrogen production and transportation for the first hydrogen supply network; N is the project operating period; i is the project discount rate; C El The investment and construction costs for hydrogen production projects located in the new energy sector include land costs, and the purchase and installation costs of water electrolysis hydrogen production equipment and hydrogen storage equipment; C PS_P The investment and construction costs for the hydrogen delivery unit include land costs, pipeline material purchase and installation costs; C PS_C The investment and construction costs for the hydrogen compression unit include land costs, the purchase and installation costs of the hydrogen compressor and hydrogen storage containers; R El The residual value after the hydrogen production project's operational period; R PS The residual value after the operation period of the hydrogen storage and transportation project; C El_OM The annual operation and maintenance costs for hydrogen production projects located at the renewable energy end, including water costs, labor costs for maintenance personnel, and repair costs; C PS_OM The annual operation and maintenance costs for the hydrogen storage and transportation project include labor costs for maintenance personnel and repair costs; C El_E The annual electricity cost for hydrogen production; C PS_E λ1 represents the annual electricity cost of the hydrogen compression unit; λ1 represents the system utilization rate; and M1 represents the system capacity.

7. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 3, characterized in that, The formula for calculating the levelized cost of hydrogen production and transportation for the second hydrogen supply network is as follows: In the above formula: LCOH2 is the levelized cost of hydrogen production and transportation for the second hydrogen supply network; N is the project operating period; i is the project discount rate; C′ El The investment and construction costs for a hydrogen production project located at the load end include land costs, and the purchase and installation costs of the water electrolysis hydrogen production unit and hydrogen storage unit; R′ El The residual value after the project's operating period; C′ El_OM The annual operation and maintenance costs for the hydrogen production project include water costs, labor costs for maintenance personnel, and repair costs; C′ El_E λ2 represents the electricity cost of the hydrogen production project located at the load end, which is the electricity price of the terminal grid; λ2 represents the system utilization rate of the second hydrogen supply network; and M2 represents the system capacity of the second hydrogen supply network.

8. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 2, characterized in that, The first hydrogen supply network project comprises a new energy power generation unit, a first hydrogen production project, a hydrogen storage and transportation project, and a hydrogen load unit. The new energy power generation unit is used to provide power to the first hydrogen production project; the new energy power generation unit includes a new energy power station, an energy storage unit and a supporting power source, wherein the new energy power station directly supplies power to the first hydrogen production project, and the energy storage unit and the supporting power source respectively supplement the power supply to the first hydrogen production project. The first hydrogen production project includes a first water electrolysis hydrogen production unit, which receives electricity from the new energy power generation unit and electrolyzes hydrogen to produce hydrogen gas; the first water electrolysis hydrogen production unit includes a water electrolysis hydrogen production device and a hydrogen storage device, and the hydrogen gas produced by the water electrolysis hydrogen production device is stored through the hydrogen storage device. The hydrogen storage and transportation project includes a hydrogen compression unit and a hydrogen delivery unit. The hydrogen compression unit is used to compress the hydrogen produced by the water electrolysis hydrogen production unit and input it into the hydrogen delivery unit; the hydrogen delivery unit is used to deliver the compressed hydrogen to the hydrogen load unit. The hydrogen loading unit receives hydrogen from the hydrogen delivery unit and supplies hydrogen to users for consumption.

9. The hydrogen transport planning method for a hydrogen-electric energy network according to claim 3, characterized in that, The second hydrogen supply network includes a new energy power generation unit, a power transmission network unit, a second hydrogen production project, and a hydrogen load unit; The new energy power generation unit is used to transmit power to the power transmission network unit; the new energy power generation unit includes a new energy power station, an energy storage unit and a supporting power source, wherein the new energy power station directly supplies power to the power transmission network unit, and the energy storage unit and the supporting power source respectively supplement the power supply to the power transmission network unit; The power transmission network unit is used to transmit electricity from the new energy power generation unit to the second hydrogen production project; The second hydrogen production project includes a second water electrolysis hydrogen production unit, which receives power from the power grid unit and electrolyzes hydrogen to produce hydrogen gas; the second water electrolysis hydrogen production unit includes a water electrolysis hydrogen production device and a hydrogen storage device, and the hydrogen gas produced by the water electrolysis hydrogen production device is stored through the hydrogen storage device; The hydrogen load unit receives hydrogen produced by the second hydrogen production project and supplies hydrogen to users for consumption.

10. A hydrogen transport planning device for a hydrogen-electric energy network, characterized in that, The device includes: The hydrogen supply network construction module is used to construct a hydrogen energy supply network based on pipeline hydrogen transportation according to the new energy end and the hydrogen load end. The hydrogen energy supply network includes at least a first hydrogen transportation supply network based on hydrogen production at the new energy end and a second hydrogen transportation supply network based on hydrogen production at the hydrogen load end. The first cost calculation module is used to calculate the hydrogen supply cost of the first hydrogen transmission supply network based on the power parameters and cost parameters of the new energy source. The second cost calculation module is used to calculate the hydrogen supply cost of the second hydrogen transmission supply network based on the power parameters and cost parameters at the hydrogen load end. The hydrogen supply network screening module is used to compare the hydrogen supply costs of the first and second hydrogen supply networks and screen out the optimal hydrogen energy supply network.

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