CN115345425B

CN115345425B - Control method and device of energy storage system, computer equipment and storage medium

Info

Publication number: CN115345425B
Application number: CN202210800964.9A
Authority: CN
Inventors: 刘彪; 杨福源; 欧阳明高
Original assignee: Tsinghua University
Current assignee: Tsinghua University
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2023-07-07
Anticipated expiration: 2042-07-08
Also published as: CN115345425A

Abstract

The application relates to a control method, a control device, computer equipment and a storage medium of an energy storage system. The energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment and ammonia energy storage equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia energy storage equipment comprises ammonia production equipment and ammonia storage equipment, and the ammonia production equipment is always in a working state; the method comprises the following steps: the method comprises the steps of obtaining the required power of a power bus, the rated power of hydrogen production equipment, the rated power of ammonia production equipment and the current operating power of the ammonia production equipment, and controlling the operating power of the hydrogen production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current operating power of the ammonia production equipment. The method can reduce the cost of the energy storage system in a long-period large-scale application scene.

Description

Control method and device of energy storage system, computer equipment and storage medium

Technical Field

The present disclosure relates to the field of energy storage technologies, and in particular, to a control method and apparatus for an energy storage system, a computer device, and a storage medium.

Background

The construction of a novel power supply system for high-proportion renewable energy sources is important for achieving the goals of carbon peak reaching and carbon neutralization. Therefore, the energy storage technology becomes an important link for constructing a novel power system and realizing electric auxiliary service, and along with the increase of the proportion of renewable energy sources, the demands for long-period and large-scale energy storage technology are gradually increased.

The hydrogen energy is a clean energy source, and can electrolyze water by using unstable renewable energy sources to produce hydrogen and store the hydrogen so as to realize hydrogen energy storage. Therefore, the energy storage system for realizing hydrogen energy storage has wide application prospect.

However, the cost of hydrogen storage is high, and for long-period and large-scale application scenarios, most of the cost of an energy storage system for realizing hydrogen energy storage is used for hydrogen storage, so how to reduce the cost of the energy storage system is an important research problem for the person skilled in the art.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a control method, apparatus, computer device, and storage medium for an energy storage system that can reduce the cost of the energy storage system in a long-period, large-scale application scenario.

In a first aspect, the present application provides a method for controlling an energy storage system. The energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment and ammonia energy storage equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia energy storage equipment comprises ammonia production equipment and ammonia storage equipment, and the ammonia production equipment is always in a working state; the method comprises the following steps:

Acquiring the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

and controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current operating power of the ammonia production equipment.

In a second aspect, the present application further provides a control device of an energy storage system. The energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment and ammonia energy storage equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia energy storage equipment comprises ammonia production equipment and ammonia storage equipment, the ammonia production equipment is always in a working state, and the device comprises:

the acquisition module is used for acquiring the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

the first control module is used for controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In a third aspect, the present application also provides a computer device. The computer device comprises a memory storing a computer program and a processor implementing the steps of any of the methods described above when the processor executes the computer program.

In a fourth aspect, the present application also provides a computer-readable storage medium. The computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of any of the methods described above.

In a fifth aspect, the present application also provides a computer program product. The computer program product comprising a computer program which, when executed by a processor, implements the steps of any of the methods described above.

The control method, the control device, the computer equipment and the storage medium of the energy storage system are characterized in that the energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment and ammonia energy storage equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia production equipment is always in a working state, the working power of the hydrogen production equipment and the working power of the ammonia production equipment are controlled according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current working power of the ammonia production equipment by acquiring the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current working power of the ammonia production equipment. That is, in the method provided by the application, the ammonia production equipment can always operate, the hydrogen production equipment does not always operate, but the working power of the hydrogen production equipment is determined through the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current operating power of the ammonia production equipment, namely the operating state of the hydrogen production equipment considers the actual conditions of the energy storage system and the power bus. In other words, since the ammonia production device is operated all the time in the present application, the hydrogen production device is not required to be operated all the time, but is operated according to the actual situation, so the hydrogen storage amount in the present application is far smaller than that generated by using only the hydrogen storage device in the conventional technology. Further, the cost of the energy storage system is mostly used for storing, the cost of storing hydrogen is high, and the cost of storing ammonia is lower than that of storing hydrogen, for example, the cost of storing hydrogen is generally 1500 yuan/kg, and the cost of storing ammonia is generally only 35 yuan/kg, so that a large amount of hydrogen needs to be stored in the conventional technology, and the cost of the energy storage system is also high. The ammonia storage device has lower cost and smaller investment scale than the hydrogen storage device, and the cost required by adding the ammonia storage device and operating the ammonia production device for a long time is far less than the cost of using only the hydrogen storage device, namely the ammonia storage device has higher economy than the hydrogen storage device. Therefore, the ammonia production equipment is always in an operation state, the control mode of the energy storage system, which is determined according to the actual conditions of the energy storage system and the power bus, of the working power of the hydrogen production equipment is more economical to long-period and large-scale application scenes, and the problem of high cost caused by using the hydrogen storage equipment in a long-period and large-scale manner in the traditional technology is avoided, so that the cost of the energy storage system in the long-period and large-scale application scenes is reduced.

Drawings

FIG. 1 is an application environment diagram of a control method of an energy storage system according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an energy storage system of the present application;

FIG. 3 is a flow chart of a control method of the energy storage system according to an embodiment of the present application;

FIG. 4 is a schematic flow chart of controlling the operating power of a hydrogen plant in an embodiment of the present application;

FIG. 5 is a schematic flow chart of another embodiment of controlling the operating power of a hydrogen plant;

FIG. 6 is a schematic diagram of another energy storage system of the present application;

FIG. 7 is a schematic flow chart of controlling the working power of the ammonia production device and the working power of the power generation device according to the embodiment of the present application;

FIG. 8 is a schematic flow chart of another embodiment of controlling the operating power of an ammonia plant and the operating power of a power plant;

FIG. 9 is a schematic flow chart of determining a flow rate according to an embodiment of the present application;

FIG. 10 is a schematic diagram illustrating a control of the energy storage system in an energy storage mode;

FIG. 11 is a schematic diagram illustrating a control of the energy storage system in a power generation mode;

FIG. 12 is a block diagram of a control device of an energy storage system according to an embodiment of the present application;

fig. 13 is an internal structural diagram of the computer device in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

Fig. 1 is an application environment diagram of a control method of an energy storage system according to an embodiment of the present application, where the control method of an energy storage system provided by the embodiment of the present application may be applied to an application environment as shown in fig. 1. The energy storage system is connected with the power bus in parallel, the energy storage equipment comprises hydrogen energy storage equipment and ammonia energy storage equipment, and the power bus can be a bus in a power transmission line or a bus in a direct-current micro-grid. The computer device may be in communication with the energy storage system and the power bus, respectively.

The hydrogen storage device includes a hydrogen production device and a hydrogen storage device, and the ammonia storage device includes an ammonia production device and an ammonia storage device, that is, the hydrogen storage device is configured to generate and store hydrogen gas, and the ammonia storage device is configured to generate and store ammonia gas. Wherein, the ammonia production equipment is always in a working state.

For better description of the control method of the energy storage system in the present application, the energy storage system is described herein. Fig. 2 is a schematic diagram of an energy storage system of the present application. In this embodiment, in particular, the hydrogen production apparatus includes an electrolytic cell, and the hydrogen storage apparatus includes a hydrogen storage tank; the ammonia production equipment comprises a pressure swing adsorption (Pressure Swing Adsorption, PSA) system, a nitrogen storage tank and a synthetic ammonia equipment, wherein the ammonia storage equipment comprises an ammonia storage tank. The ammonia plant is always in operation, and the PSA system is responsible for separating nitrogen from air and storing it in the nitrogen storage tank, whereas the ammonia synthesis plant synthesizes ammonia based on hydrogen in the hydrogen storage tank and nitrogen in the nitrogen storage tank and stores it in the ammonia storage tank. The hydrogen storage tank can pre-store part of hydrogen in advance, and can also store hydrogen into the hydrogen storage tank through the hydrogen production of the electrolytic cell. Thus, a portion of the hydrogen produced by the hydrogen storage device in this application is converted to ammonia by the ammonia storage device.

It should be noted that, the hydrogen energy storage device and the ammonia energy storage device in the energy storage system may also be composed of other devices, and one or more devices of a boost conversion device, a buck conversion device and an ac/dc conversion device may also be disposed between the energy storage system and the power bus, which is not limited in this embodiment.

Fig. 3 is a flow chart of a control method of an energy storage system according to an embodiment of the present application, where the method may be applied to the computer device shown in fig. 1, and in one embodiment, as shown in fig. 3, the method includes the following steps:

s301, obtaining the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In this embodiment, the computer device obtains the required power p_r of the power bus, the rated power of the hydrogen production device, the rated power of the ammonia production device, and the current operating power of the ammonia production device. The power scheduling curve of the power bus describes the change condition of the power bus with time, and the power bus demand power p_r can be determined according to the current and voltage of the power bus at the current moment. In general, the computer device may directly obtain the power scheduling curve of the power bus, so as to determine the required power p_r of the power bus.

Further, in this embodiment, the rated power of the hydrogen production device refers to the rated power of the electrolyzer, the rated power of the ammonia production device refers to the sum of the rated power of the PSA system and the rated power of the synthesis ammonia device, and the current operating power of the ammonia production device refers to the sum of the rated power of the PSA system and the current operating power of the synthesis ammonia device.

S302, controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In this embodiment, the computer device can control the working power of the hydrogen production device and the working power of the ammonia production device according to the required power of the power bus, the rated power of the hydrogen production device, the rated power of the ammonia production device, and the current operating power of the ammonia production device. For example, when the required power p_r of the power bus is greater than zero and less than the rated power of the electrolyzer, the electrolyzer is insufficient to provide power to the power bus, and thus the operating power of the hydrogen plant is controlled to be 0, i.e., the hydrogen plant is turned off, and only the ammonia plant is used to convert electrical energy into chemical energy for energy storage.

According to the control method of the energy storage system, the energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment and ammonia energy storage equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia production equipment is always in a working state, the working power of the hydrogen production equipment and the working power of the ammonia production equipment are controlled according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current working power of the ammonia production equipment by acquiring the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current working power of the ammonia production equipment. That is, in the method provided by the application, the ammonia production equipment can always operate, the hydrogen production equipment does not always operate, but the working power of the hydrogen production equipment is determined through the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current operating power of the ammonia production equipment, namely the operating state of the hydrogen production equipment considers the actual conditions of the energy storage system and the power bus. In other words, since the ammonia production device is operated all the time in the present application, the hydrogen production device is not required to be operated all the time, but is operated according to the actual situation, so the hydrogen storage amount in the present application is far smaller than that generated by using only the hydrogen storage device in the conventional technology. Further, the cost of the energy storage system is mostly used for storing, the cost of storing hydrogen is high, and the cost of storing ammonia is lower than that of storing hydrogen, for example, the cost of storing hydrogen is generally 1500 yuan/kg, and the cost of storing ammonia is generally only 35 yuan/kg, so that a large amount of hydrogen needs to be stored in the conventional technology, and the cost of the energy storage system is also high. The ammonia storage device has lower cost and smaller investment scale than the hydrogen storage device, and the cost required by adding the ammonia storage device and operating the ammonia production device for a long time is far less than the cost of using only the hydrogen storage device, namely the ammonia storage device has higher economy than the hydrogen storage device. Therefore, the ammonia production equipment is always in an operation state, the control mode of the energy storage system, which is determined according to the actual conditions of the energy storage system and the power bus, of the working power of the hydrogen production equipment is more economical to long-period and large-scale application scenes, and the problem of high cost caused by using the hydrogen storage equipment in a long-period and large-scale manner in the traditional technology is avoided, so that the cost of the energy storage system in the long-period and large-scale application scenes is reduced.

In addition, a part of hydrogen generated by the hydrogen energy storage equipment can be converted into ammonia by the ammonia energy storage equipment, so that the hydrogen storage amount is reduced, and the problem of high cost caused by large-scale storage of hydrogen in the conventional technology is further avoided.

Fig. 4 is a schematic flow chart of controlling the operating power of the hydrogen production device according to the embodiment of the present application, and referring to fig. 4, this embodiment relates to an alternative implementation of how to control the operating power of the hydrogen production device. Based on the above embodiment, S302 controls the working power of the hydrogen production device and the working power of the ammonia production device according to the required power of the power bus, the rated power of the hydrogen production device, the rated power of the ammonia production device and the current operating power of the ammonia production device, and includes the following steps:

s401, if the required power is larger than a preset first threshold value and the required power is smaller than the minimum rated power of the hydrogen production equipment, comparing the required power with a second threshold value to obtain a first comparison result, wherein the second threshold value is a difference value between the maximum rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In this embodiment, the power rating of the hydrogen plant comprises a minimum power rating and the power rating of the ammonia plant comprises a maximum power rating. More specifically, the product of the cell power rating p_el and the cell operating load lower limit n, n·p_el, is taken as the minimum power rating for the hydrogen plant in this example, where alkaline cells are typically 20% and proton exchange membrane (proton exchange membrane, PEM) cells are typically 5%.

Since the ammonia plant includes the PSA system and the synthesis ammonia plant, the maximum rated power of the ammonia plant in this embodiment includes the maximum rated power p_psa_h of the PSA system and the maximum rated power p_syn_h of the synthesis ammonia plant, and the current operating power of the ammonia plant includes the current operating power p_psa_0 of the PSA system and the current operating power p_syn_0 of the synthesis ammonia plant.

In this embodiment, the required power p_r is greater than a preset first threshold, for example, 0, to determine whether the energy storage system needs to enter the energy storage mode, and when the required power p_r is greater than 0, the power on the power bus is excessive, and in this case, the energy storage system needs to convert the electric energy into chemical energy for storage, so that the energy storage system enters the energy storage mode.

Further, if the required power p_r is greater than 0, it is determined whether the required power p_r is less than the minimum rated power n·p_el of the hydrogen plant.

When the required power P_R is larger than a preset first threshold value and the required power P_R is smaller than the minimum rated power n.P_EL of the hydrogen production equipment, the computer equipment compares the required power P_R with a second threshold value to obtain a first comparison result. Specifically, the second threshold is the difference between the maximum rated power of the ammonia plant and the current operating power of the ammonia plant, i.e., (p_psa_h-p_psa_0) + (p_syn_h-p_psa_0).

S402, controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the first comparison result.

In this embodiment, if p_r is greater than (p_psa_h-p_psa_0) + (p_syn_h-p_psa_0) in the first comparison result, the hydrogen production plant is turned off, i.e., the operating power of the hydrogen production plant is controlled to be 0, and the electrolyzer is turned off. Further, if p_r is greater than (p_psa_h-p_psa_0) + (p_syn_h-p_psa_0), the operating power of the ammonia plant may be further increased, i.e., the current operating power of the PSA system p_psa_0 and the current operating power of the ammonia plant p_syn_0 may be increased.

If P_R is less than (P_PSA_H-P_PSA_0) + (P_SYN_H-P_PSA_0), controlling the operating power of the hydrogen plant to be the minimum rated power, i.e. controlling the electrolytic cell to operate at the minimum rated power n.P_EL. Further, if p_r is smaller than (p_psa_h-p_psa_0) + (p_syn_h-p_psa_0), the operating power of the ammonia plant may be further reduced, i.e., the current operating power of the PSA system p_psa_0 and the current operating power of the ammonia plant p_syn_0 may be reduced.

In the implementation, if the required power is greater than a preset first threshold value and the required power is less than the minimum rated power of the hydrogen production equipment, comparing the required power with a second threshold value to obtain a first comparison result, wherein the second threshold value is a difference value between the maximum rated power of the ammonia production equipment and the current running power of the ammonia production equipment, and further controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the first comparison result. The working power of the hydrogen production equipment is controlled according to the power required by the power bus and the actual running condition of the energy storage system, so that the problem of high cost caused by long-term use of the hydrogen production equipment in the traditional technology is avoided, and the cost of the energy storage system in a long-period and large-scale application scene is reduced.

Fig. 5 is a schematic flow chart of another embodiment of the present application for controlling the operating power of the hydrogen plant, and referring to fig. 5, this embodiment relates to an alternative implementation of how to control the operating power of the hydrogen plant. On the basis of the above embodiment, the control method of the energy storage system further includes the following steps:

s501, if the required power is larger than a preset first threshold value and the required power is not smaller than the minimum rated power of the hydrogen production equipment, comparing the required power with the maximum rated power of the hydrogen production equipment to obtain a second comparison result.

The power rating of the hydrogen plant also includes a maximum power rating, and more specifically, in this embodiment, the product m·p_el of the power rating p_el of the electrolyzer and the upper limit m of the operating load of the electrolyzer is taken as the maximum power rating of the hydrogen plant, where alkaline electrolyzer m is 110% and PEM electrolyzer m is 160%.

In this embodiment, if the required power_r is greater than the preset first threshold, the energy storage system enters the energy storage mode. Further, if the required power p_r is greater than 0, it is determined whether the required power p_r is less than the minimum rated power n·p_el of the hydrogen plant.

When the required power P_R is greater than a preset first threshold and the required power P_R is not less than the minimum rated power n.P_EL of the hydrogen production plant, the computer device compares the required power P_R with the maximum rated power m.P_EL of the hydrogen production plant.

S502, controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the second comparison result.

In this example, if p_r is greater than m·p_el in the second comparison result, the hydrogen plant is controlled to operate at the maximum rated power, i.e., the electrolyzer is controlled to operate at the maximum rated power m·p_el. Further, if p_r is greater than m·p_el, the operating power of the ammonia plant may be further increased, that is, the current operating power of the PSA system p_psa_0 and the current operating power of the ammonia plant p_syn_0 may be increased.

If P_R is not greater than m.P_EL, the hydrogen plant is controlled to operate at the required power P_R, i.e., the electrolyzer is operated at power P_R. Further, if p_r is not greater than m·p_el, the operating power of the ammonia plant may also be controlled to be unchanged, i.e., the current operating power p_psa_0 of the PSA system and the current operating power p_syn_0 of the ammonia plant remain unchanged.

In this embodiment, if the required power is greater than a preset first threshold and the required power is not less than the minimum rated power of the hydrogen production device, the required power is compared with the maximum rated power of the hydrogen production device to obtain a second comparison result, and the working power of the hydrogen production device and the working power of the ammonia production device are controlled according to the second comparison result.

Optionally, the energy storage system further includes a power generation device, and the control method of the energy storage system further includes:

and controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current operating power of the ammonia production equipment.

In this embodiment, fig. 6 is a schematic diagram of another energy storage system in the present application. As shown in fig. 6, the energy storage system in this embodiment further includes a power generation device including a power generation apparatus and a mixer. When the energy storage system is in a power generation mode, the mixer uniformly mixes ammonia gas and hydrogen gas in a certain proportion and then sends the mixed ammonia gas and hydrogen gas into the power generation device, and the hydrogen gas and the ammonia gas are combusted in the power generation device, so that chemical energy is converted into electric energy. The power generation device may be at least one of an internal combustion engine, a gas turbine, a boiler, and a fuel cell, and the embodiment is not limited.

Further, the computer equipment controls the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment. For example, if the required power p_r is smaller than zero and the absolute value of the required power p_r is larger than the rated power of the power generation equipment, the operating power of the power generation equipment is controlled to be p_r and the operating power of the ammonia production equipment is unchanged.

According to the embodiment, the working power of the ammonia production equipment and the working power of the power generation equipment are controlled according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment. Because the power generation can be performed according to the required power of the power bus and the actual condition of the energy storage system, the economy of the energy storage system is further improved.

Fig. 7 is a schematic flow chart of controlling the operating power of the ammonia generating device and the operating power of the power generating device according to an embodiment of the present application, and referring to fig. 7, this embodiment relates to an alternative implementation manner of controlling the operating power of the ammonia generating device and the operating power of the power generating device. On the basis of the above embodiment, the controlling the working power of the ammonia production device and the working power of the power generation device according to the required power of the power bus, the rated power of the power generation device, the rated power of the ammonia production device and the current operating power of the ammonia production device further includes the following steps:

and S701, if the required power is not greater than the first threshold value and the absolute value of the required power is greater than the minimum rated power of the power generation equipment, comparing the absolute value of the required power with the maximum rated power of the power generation equipment to obtain a third comparison result.

In the present embodiment, the rated power of the power generation device includes a minimum rated power and a maximum rated power, specifically, the maximum rated power of the power generation device is p_ge, and the minimum rated power of the power generation device is a·p_ge. Where a is the lowest load factor of the power generation equipment, for example, the fuel cell is 5%, and the power generation of the internal combustion engine is 20%. The required power p_r is not greater than a preset first threshold value, and is used for judging whether the energy storage system needs to enter a power generation mode, for example, when the required power p_r is less than 0, the power on the power bus is insufficient, and in this case, chemical energy needs to be converted into electric energy to compensate the power of the power bus, that is, the energy storage system enters the power generation mode.

Further, if the required power p_r is not greater than 0, it is determined whether the absolute value of the required power p_r is greater than the minimum rated power a·p_ge of the power generation plant of the hydrogen generation plant.

When the required power rate P_R is not greater than the first threshold value and the absolute value of the required power rate P_R is greater than the minimum rated power a.P_GE of the power generation equipment, the computer equipment compares the absolute value of the required power P_R with the maximum rated power P_GE of the power generation equipment to obtain a third comparison result.

S702, controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the third comparison result.

In this embodiment, if the absolute value of p_r is greater than p_ge in the third comparison result, the operating power of the power generation device is controlled to be the maximum rated power p_ge, and the operating power of the ammonia production device is reduced, that is, the current operating power p_psa_0 of the PSA system and the current operating power p_syn_0 of the ammonia synthesis device are reduced.

If the absolute value of P_R is not greater than P_GE, the working power of the power generation device is controlled to be the absolute value of P_R, and the working power of the ammonia production device is kept unchanged, namely the current operating power P_PSA_0 of the PSA system and the current operating power P_SYN_0 of the ammonia synthesis device are unchanged.

In this embodiment, if the required power is not greater than the first threshold and the absolute value of the required power is greater than the minimum rated power of the power generation device, the absolute value of the required power is compared with the maximum rated power of the power generation device to obtain a third comparison result, and then the working power of the ammonia production device and the working power of the power generation device are controlled according to the third comparison result, so that the practicability and the economical efficiency of the energy storage system are further improved.

Fig. 8 is a schematic flow chart of another embodiment of the present application for controlling the operating power of the ammonia generating device and the operating power of the power generating device, and referring to fig. 8, this embodiment relates to an alternative implementation of how to control the operating power of the ammonia generating device and the operating power of the power generating device. On the basis of the above embodiment, the control method of the energy storage system further includes the following steps:

S801, if the required power is not greater than the first threshold value and the absolute value of the required power is not greater than the minimum rated power of the power generation equipment, comparing the absolute value of the required power with a preset third threshold value to obtain a fourth comparison result, wherein the third threshold value is a difference value between the minimum rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In this embodiment, the power rating of the ammonia plant includes a minimum power rating, which includes a minimum power rating P_PSA_L of the PSA system and a minimum power rating P_SYN_L of the synthetic ammonia plant.

Likewise, if the required power_r is not greater than the preset first threshold, the energy storage system enters a power generation mode. Further, if the required power p_r is not greater than 0, determining the absolute value of the required power p_r and the third threshold to obtain a fourth comparison result. Specifically, the third threshold is the difference between the minimum rated power of the ammonia plant and the current operating power of the ammonia plant, i.e., (P_PSA_0-P_PSA_L) + (P_SYN_0-P_PSA_L).

S802, controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to a fourth comparison result.

In this embodiment, if the absolute value of p_r is smaller than (p_psa_0-p_psa_l) + (p_syn_0-p_psa_l) in the fourth comparison result, the power generation device is controlled to operate at 0, i.e., the power generation device is turned off, and the operating power of the ammonia plant is reduced, i.e., the current operating power of the PSA system p_psa_0 and the current operating power of the ammonia plant p_syn_0 are reduced.

If the absolute value of P_R is not less than (P_PSA_0-P_PSA_L) + (P_SYN_0-P_PSA_L), the power generation device is controlled to operate at the minimum rated power a.P_GE, and the operating power of the ammonia plant is increased, namely the current operating power P_PSA_0 of the PSA system and the current operating power P_SYN_0 of the synthesis ammonia plant are increased.

In this embodiment, if the required power is not greater than the first threshold and the absolute value of the required power is not greater than the minimum rated power of the power generation device, the absolute value of the required power is compared with a preset third threshold to obtain a fourth comparison result, where the third threshold is a difference value between the minimum rated power of the ammonia production device and the current running power of the ammonia production device, and further, the working power of the ammonia production device and the working power of the power generation device are controlled according to the fourth comparison result, so that the practicality and the economy of the energy storage system are further improved.

The power generation equipment needs to burn ammonia and hydrogen for power generation, and the combustion ratio of the ammonia and the hydrogen can influence the combustion efficiency of the power generation equipment, so that the combustion ratio of the ammonia and the hydrogen needs to be controlled in real time. In order to realize the control of the combustion ratio of ammonia and hydrogen, in this embodiment, the energy storage system further includes a control device, where the control device is used to control the flow rate of hydrogen and the flow rate of ammonia entering the power generation device, so as to realize the control of the combustion ratio of ammonia and hydrogen.

Fig. 9 is a schematic flow chart of determining a flow rate in an embodiment of the present application, and referring to fig. 9, this embodiment relates to an alternative implementation of how to determine a flow rate of hydrogen and a flow rate of ammonia. On the basis of the above embodiment, the control method of the energy storage system further includes the following steps:

s901, determining the hydrogen flow according to the required power of the power bus, the hydrogen storage amount of the energy storage system, the ammonia storage amount of the energy storage system and the rated power of the power generation equipment.

In this embodiment, the computer device stores hydrogen Q in the energy storage system according to the power p_r of the power bus _H Ammonia storage quantity Q of energy storage system _A And maximum rated power P_GE of the power generation equipment, and determining hydrogen flow F _H (units kw.h).

In order to maintain stable combustion of hydrogen and ammonia, the ratio of hydrogen to ammonia is generally controlled to be 20% -80%, specifically, the computer apparatus determines the hydrogen flow rate F according to the following formula (1) _H 。

Where ω is the energy released by combusting 1kg of hydrogen, ρ is the energy released by combusting 1kg of ammonia, typically ω is 33.3, ρ is 5.21.

S902, determining the flow of ammonia according to the required power of the power bus and the flow of hydrogen.

In this embodiment, further, the computer device generates the required power p_r and the hydrogen flow F according to the power bus _H Determining the flow rate F of ammonia _A (units kw.h). Specifically, the computer apparatus determines the hydrogen flow rate F according to the following formula (2) _A 。

Wherein ρ is still 5.21.

According to the embodiment, the hydrogen flow is determined according to the required power of the power bus, the hydrogen storage amount of the energy storage system, the ammonia storage amount of the energy storage system and the rated power of the power generation equipment, and the ammonia flow is determined according to the required power of the power bus and the hydrogen flow. Therefore, the method provided by the embodiment is beneficial to the applicability of the energy storage system to different energy storage period scenes, and on the other hand, the mixed combustion of the hydrogen and the ammonia is realized, the complementary advantages of the hydrogen combustion and the ammonia combustion are realized, the combustion is easy to control, and the round trip efficiency of the energy storage system is further improved on the basis of reducing the cost of the energy storage system. In addition, the hydrogen flow and the ammonia flow can be determined in the present application, and the combustion ratio of hydrogen and ammonia in the power generation device is adjustable. For example, when the power demand of the power bus is small, the combustion ratio of hydrogen may be increased, and when the power demand of the power bus is large, the combustion ratio of ammonia may be increased. Therefore, the ammonia energy storage device is more suitable for the advantage of long period than the hydrogen energy storage device, and the adopted hydrogen-ammonia coupled energy storage has better adaptability compared with the energy storage mode in a single form.

To more clearly describe the control method of the energy storage system in the present application, the description is provided herein with reference to fig. 10 and 11. Fig. 10 is a schematic diagram of a control of the energy storage system in the energy storage mode, and fig. 11 is a schematic diagram of a control of the energy storage system in the power generation mode. When the required power P_R of the power bus is larger than 0, the energy storage system enters an energy storage mode, and when the required power P_R of the power bus is not larger than 0, the energy storage system enters a power generation mode.

Specifically, with reference to fig. 10, when the required power p_r is greater than 0, p_r is less than n·p_el, and p_r is less than (p_psa_h-p_psa_0) + (p_syn_h-p_psa_0), the energy storage system enters mode 1, and the hydrogen plant is turned off and the operating power of the ammonia plant is increased in mode 1. When P_R is greater than 0, P_R is less than n.P_EL, and P_R is not less than (P_PSA_H-P_PSA_0) + (P_SYN_H-P_PSA_0), the energy storage system enters a mode 2, and the working power of the hydrogen production equipment is controlled to be the minimum rated power and the working power of the ammonia production equipment is reduced in the mode 2. When P_R is greater than 0, P_R is not less than n.P_EL, and P_R is greater than m.P_EL, the energy storage system enters mode 3, the hydrogen production plant is controlled to operate at the maximum rated power in mode 3, and the operating power of the ammonia synthesis plant is increased. When P_R is greater than 0, P_R is not less than n.P_EL and P_R is not greater than m.P_EL, the energy storage system enters a mode 4, and the hydrogen production equipment is controlled to operate at the required power P_R in the mode 4, and the working power of the ammonia synthesis equipment is kept unchanged.

Referring to fig. 10, the energy storage system provides the lower limit of energy storage power in the energy storage mode: min {0, [ n.p_el- (p_psa_0-p_psa_l) - (p_syn_0-p_syn_l) ] }, the upper limit of the storage power provided is: [ m.P_EL+ (P_PSA_H-P_PSA_0) + (P_SYN_H-P_SYN_0) ].

With continued reference to fig. 11, when the required power p_r is not greater than 0, the absolute value of p_r is greater than a·p_ge, and the absolute value of p_r is greater than p_ge, the energy storage system enters mode 5, and the power generation device is controlled to operate at the maximum rated power in mode 5, and the operating power of the ammonia synthesis device is reduced. When the required power P_R is not more than 0, the absolute value of P_R is more than a.P_GE and the absolute value of P_R is not more than P_GE, the energy storage system enters a mode 6, and the working power of the power generation equipment is controlled to be the absolute value of the required power P_R in the mode 6, and the working power of the ammonia synthesis equipment is kept unchanged. When the required power P_R is not greater than 0, the absolute value of P_R is not greater than a.P_GE, and the absolute value of P_R is less than (P_PSA_0-P_PSA_L) + (P_SYN_0-P_PSA_L), the energy storage system enters a mode 7, the power generation device is turned off in the mode 7, and the working power of the synthesis ammonia device is reduced. When the required power p_r is not greater than 0, the absolute value of p_r is not greater than a·p_ge, and the absolute value of p_r is not less than (p_psa_0-p_psa_l) + (p_syn_0-p_psa_l), the energy storage system enters mode 8, the power generation device operates at the minimum rated power in mode 8, and the operating power of the ammonia synthesis device is increased.

Referring to fig. 11, the lower limit of the generated power provided by the energy storage system in the energy storage mode is: min [0, a.P_GE- (P_PSA_H-P_PSA_0) - (P_SYN_H-P_SYN_0) ], the upper limit of the provided power generation is as follows: [ P_GE+ (P_PSA_0-P_PSA_L) + (P_SYN_0-P_SYN_L) ].

In summary, the energy storage system in the present application is connected in parallel to the power bus, and completes energy storage and release of the power based on the power scheduling requirement of the power bus. When the energy storage system operates in the energy storage mode, redundant electric power on the electric bus is converted into chemical energy for storage through the hydrogen production equipment and/or the ammonia production equipment; when the energy storage system operates in a power generation mode, stored hydrogen and ammonia are combusted in the power generation device according to a preset proportion, and chemical energy is converted into electric energy so as to make up for the deficiency of electric power of the power bus.

Compared with the existing energy storage technology, the integrated hydrogen-ammonia energy storage system is lower in energy storage cost than a pure hydrogen energy storage system, higher in round trip efficiency than the pure ammonia energy storage system and better in adaptability than a single-form energy storage mode. And the working power of the hydrogen production equipment, the ammonia production equipment and the power generation equipment in the application is changed in real time along with the requirements of the power bus and the actual conditions of the energy storage system.

In addition, the ammonia production equipment is always in an operation state, the working power of the ammonia production equipment is only changed in the operation process, frequent start and stop of the ammonia production equipment are avoided, the service life of the ammonia production equipment is prolonged, and the operation and maintenance management cost is reduced.

In addition, the application of the method is beneficial to widening the application range of the energy storage system by controlling the combustion proportion of the hydrogen and the ammonia in real time, for example, the combustion proportion of the ammonia can be increased in a longer seasonal energy storage scene; the combustion proportion of hydrogen can be increased in the energy storage scene with a shorter period.

It should be understood that, although the steps in the flowcharts related to the embodiments described above are sequentially shown as indicated by arrows, these steps are not necessarily sequentially performed in the order indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps in the flowcharts described in the above embodiments may include a plurality of steps or a plurality of stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the steps or stages is not necessarily performed sequentially, but may be performed alternately or alternately with at least some of the other steps or stages.

Based on the same inventive concept, the embodiment of the application also provides a control device of the energy storage system for realizing the control method of the energy storage system. The implementation of the solution provided by the device is similar to the implementation described in the above method, so the specific limitation in the embodiments of the control device of the energy storage system or systems provided below may be referred to the limitation of the control method of the energy storage system hereinabove, and will not be repeated here.

Fig. 12 is a block diagram of a control device of an energy storage system according to an embodiment of the present application, in an embodiment of the present application, as shown in fig. 12, a control device 1200 of an energy storage system is provided, the energy storage system is connected in parallel with a power bus, the energy storage system includes a hydrogen generating device and an ammonia generating device, the hydrogen generating device is used for generating and storing hydrogen, the ammonia generating device is used for generating and storing ammonia, the ammonia generating device is always in an operating state, and the control device 1200 of the energy storage system includes: an acquisition module 1201 and a first control module 1202, wherein:

the acquisition module 1201 is configured to acquire a required power of the power bus, a rated power of the hydrogen production device, a rated power of the ammonia production device, and a current operating power of the ammonia production device.

The first control module 1202 is configured to control an operating power of the hydrogen production device and an operating power of the ammonia production device according to a required power of the power bus, a rated power of the hydrogen production device, a rated power of the ammonia production device, and a current operating power of the ammonia production device.

The application provides a controlling means of energy storage system, energy storage system and electric bus are parallelly connected, energy storage system includes hydrogen storage equipment and ammonia storage equipment, hydrogen storage equipment includes hydrogen manufacturing equipment and hydrogen storage equipment, ammonia storage equipment includes ammonia manufacturing equipment and ammonia storage equipment, ammonia manufacturing equipment is in operating condition all the time, through the demand power who obtains electric bus, the rated power of hydrogen manufacturing equipment, the rated power of ammonia manufacturing equipment and the current running power of ammonia manufacturing equipment, and according to the demand power of electric bus, the rated power of hydrogen manufacturing equipment, the rated power of ammonia manufacturing equipment and the current running power of ammonia manufacturing equipment, the running power of control hydrogen manufacturing equipment and ammonia manufacturing equipment. That is, the ammonia production device in the control device of the energy storage system provided by the application can always operate, the hydrogen production device does not always operate, but determines the working power of the hydrogen production device through the required power of the power bus, the rated power of the hydrogen production device, the rated power of the ammonia production device and the current operating power of the ammonia production device, namely the operating state of the hydrogen production device considers the actual conditions of the energy storage system and the power bus. In other words, since the ammonia production device is operated all the time in the present application, the hydrogen production device is not required to be operated all the time, but is operated according to the actual situation, so the hydrogen storage amount in the present application is far smaller than that generated by using only the hydrogen storage device in the conventional technology. Further, the cost of the energy storage system is mostly used for storing, the cost of storing hydrogen is high, and the cost of storing ammonia is lower than that of storing hydrogen, for example, the cost of storing hydrogen is generally 1500 yuan/kg, and the cost of storing ammonia is generally only 35 yuan/kg, so that a large amount of hydrogen needs to be stored in the conventional technology, and the cost of the energy storage system is also high. The ammonia storage device has lower cost and smaller investment scale than the hydrogen storage device, and the cost required by adding the ammonia storage device and operating the ammonia production device for a long time is far less than the cost of using only the hydrogen storage device, namely the ammonia storage device has higher economy than the hydrogen storage device. Therefore, the ammonia production equipment is always in an operation state, the control mode of the energy storage system, which is determined according to the actual conditions of the energy storage system and the power bus, of the working power of the hydrogen production equipment is more economical to long-period and large-scale application scenes, and the problem of high cost caused by using the hydrogen storage equipment in a long-period and large-scale manner in the traditional technology is avoided, so that the cost of the energy storage system in the long-period and large-scale application scenes is reduced.

Alternatively, the nominal power of the hydrogen plant includes a minimum nominal power, the nominal power of the ammonia plant includes a maximum nominal power, and the first control module 1202 includes:

and the first comparison unit is used for comparing the required power with a second threshold to obtain a first comparison result if the required power is larger than a preset first threshold and the required power is smaller than the minimum rated power of the hydrogen production equipment, wherein the second threshold is the difference value between the maximum rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

And the first control unit is used for controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the first comparison result.

Optionally, the rated power of the hydrogen-producing device further includes a maximum rated power, and the control apparatus 1200 of the energy storage system further includes:

and the first comparison module is used for comparing the required power with the maximum rated power of the hydrogen production equipment to obtain a second comparison result if the required power is larger than a preset first threshold value and the required power is not smaller than the minimum rated power of the hydrogen production equipment.

And the second control module is used for controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the second comparison result.

Optionally, the energy storage system further includes a power generation device, and the control apparatus 1200 of the energy storage system further includes:

And the third control module is used for controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

Optionally, the rated power of the power generating device includes a minimum rated power and a maximum rated power, and the third control module includes:

and the second comparison unit is used for comparing the absolute value of the required power with the maximum rated power of the power generation equipment to obtain a third comparison result if the required power is not greater than the first threshold value and the absolute value of the required power is greater than the minimum rated power of the power generation equipment.

And the second control unit is used for controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the third comparison result.

Optionally, the rated power of the ammonia producing device includes a minimum rated power, and the control device 1200 of the energy storage system further includes:

and the second comparison module is used for comparing the absolute value of the required power with a preset third threshold value to obtain a fourth comparison result if the required power is not greater than the first threshold value and the absolute value of the required power is not greater than the minimum rated power of the power generation equipment, wherein the third threshold value is the difference value between the minimum rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

And the fourth control module is used for controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the fourth comparison result.

Optionally, the power generation device combusts ammonia and hydrogen to generate power, the energy storage system further includes a control device, the control device is used for controlling the flow of hydrogen and the flow of ammonia entering the power generation device, and the control device 1200 of the energy storage system further includes:

the first determining module is used for determining the hydrogen flow according to the required power of the power bus, the hydrogen storage amount of the energy storage system, the ammonia storage amount of the energy storage system and the rated power of the power generation equipment.

And the second determining module is used for determining the flow of the ammonia gas according to the required power of the power bus and the flow of the hydrogen gas.

The above-mentioned various modules in the control device of the energy storage system may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.

Fig. 13 is an internal structural diagram of a computer device in the embodiment of the present application, and a computer device is provided, where the computer device may be a server, and the internal structural diagram may be as shown in fig. 13. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the computer device is for storing relevant data. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of controlling an energy storage system.

It will be appreciated by those skilled in the art that the structure shown in fig. 13 is merely a block diagram of a portion of the structure associated with the present application and is not limiting of the computer device to which the present application applies, and that a particular computer device may include more or fewer components than shown, or may combine some of the components, or have a different arrangement of components.

The embodiment is illustrated by applying the method to a server, and it is understood that the method may also be applied to a terminal, and may also be applied to a system including the terminal and the server, and implemented through interaction between the terminal and the server. The terminal may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices. The portable wearable device may be a smart watch, smart bracelet, headset, or the like. The server may be implemented as a stand-alone server or as a server cluster composed of a plurality of servers.

In one embodiment, a computer device is provided comprising a memory and a processor, the memory having stored therein a computer program, the processor when executing the computer program performing the steps of:

and controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

In one embodiment, the processor when executing the computer program further performs the steps of:

if the required power is larger than a preset first threshold value and the required power is smaller than the minimum rated power of the hydrogen production equipment, comparing the required power with a second threshold value to obtain a first comparison result, wherein the second threshold value is a difference value between the maximum rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

and controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the first comparison result.

if the required power is larger than a preset first threshold value and the required power is not smaller than the minimum rated power of the hydrogen production equipment, comparing the required power with the maximum rated power of the hydrogen production equipment to obtain a second comparison result;

And controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the second comparison result.

and controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

if the required power is not greater than the first threshold value and the absolute value of the required power is greater than the minimum rated power of the power generation equipment, comparing the absolute value of the required power with the maximum rated power of the power generation equipment to obtain a third comparison result;

and controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the third comparison result.

if the required power is not greater than the first threshold value and the absolute value of the required power is not greater than the minimum rated power of the power generation equipment, comparing the absolute value of the required power with a preset third threshold value to obtain a fourth comparison result, wherein the third threshold value is a difference value between the minimum rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

And controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the fourth comparison result.

determining the hydrogen flow according to the required power of the power bus, the hydrogen storage amount of the energy storage system, the ammonia storage amount of the energy storage system and the rated power of the power generation equipment;

and determining the ammonia flow according to the required power of the power bus and the hydrogen flow.

In one embodiment, a computer readable storage medium is provided having a computer program stored thereon, which when executed by a processor, performs the steps of:

In one embodiment, the computer program when executed by the processor further performs the steps of:

In one embodiment, a computer program product is provided comprising a computer program which, when executed by a processor, performs the steps of:

It should be noted that, user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) referred to in the present application are information and data authorized by the user or sufficiently authorized by each party.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the various embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high density embedded nonvolatile Memory, resistive random access Memory (ReRAM), magnetic random access Memory (Magnetoresistive Random Access Memory, MRAM), ferroelectric Memory (Ferroelectric Random Access Memory, FRAM), phase change Memory (Phase Change Memory, PCM), graphene Memory, and the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory, and the like. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like. The databases referred to in the various embodiments provided herein may include at least one of relational databases and non-relational databases. The non-relational database may include, but is not limited to, a blockchain-based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic units, quantum computing-based data processing logic units, etc., without being limited thereto.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples only represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application shall be subject to the appended claims.

Claims

1. The control method of the energy storage system is characterized in that the energy storage system is connected with the power bus in parallel, the energy storage system comprises hydrogen energy storage equipment, ammonia energy storage equipment, power generation equipment and control equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia energy storage equipment comprises ammonia production equipment and ammonia storage equipment, and the ammonia production equipment is always in a working state; the power generation equipment burns ammonia and hydrogen to generate power, and the control equipment is used for controlling the flow of the hydrogen and the flow of the ammonia entering the power generation equipment; the method comprises the following steps:

controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

2. The method of claim 1, wherein the power rating of the hydrogen plant comprises a minimum power rating and the power rating of the ammonia plant comprises a maximum power rating, the controlling the operating power of the hydrogen plant and the operating power of the ammonia plant based on the power demand of the power bus, the power rating of the hydrogen plant, the power rating of the ammonia plant, and the current operating power of the ammonia plant comprising:

3. The method of claim 2, wherein the power rating of the hydrogen plant further comprises a maximum power rating, the method further comprising:

4. The method of claim 3, wherein the power plant rated power comprises a minimum power rated and a maximum power rated, and wherein controlling the operating power of the ammonia plant and the operating power of the power plant based on the power demand of the power bus, the power plant rated power, the ammonia plant rated power, and the current operating power of the ammonia plant comprises:

5. The method of claim 4, wherein the rated power of the ammonia plant comprises a minimum rated power, the method further comprising:

6. The control device of the energy storage system is characterized in that the energy storage system is connected with an electric bus in parallel, the energy storage system comprises hydrogen energy storage equipment, ammonia energy storage equipment, power generation equipment and control equipment, the hydrogen energy storage equipment comprises hydrogen production equipment and hydrogen storage equipment, the ammonia energy storage equipment comprises ammonia production equipment and ammonia storage equipment, the ammonia production equipment is always in a working state, the power generation equipment burns ammonia and hydrogen to generate power, and the control equipment is used for controlling the flow of the hydrogen and the flow of the ammonia entering the power generation equipment; the device comprises:

the first control module is used for controlling the working power of the hydrogen production equipment and the working power of the ammonia production equipment according to the required power of the power bus, the rated power of the hydrogen production equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment;

the first determining module is used for determining the hydrogen flow according to the required power of the power bus, the hydrogen storage amount of the energy storage system, the ammonia storage amount of the energy storage system and the rated power of the power generation equipment;

the second determining module is used for determining the ammonia flow according to the required power of the power bus and the hydrogen flow;

the control device of the energy storage system is further used for controlling the working power of the ammonia production equipment and the working power of the power generation equipment according to the required power of the power bus, the rated power of the power generation equipment, the rated power of the ammonia production equipment and the current running power of the ammonia production equipment.

7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor implements the steps of the method of any one of claims 1 to 5 when the computer program is executed.

8. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 5.