Storage scheduling strategy of electricity-hydrogen coupling energy storage system for offshore oil and gas platform

Abstract

The invention discloses a storage scheduling strategy of an electricity-hydrogen coupling energy storage system for an offshore oil and gas platform, and mainly solves the problems that the offshore wind power output power is influenced by weather, the load power is influenced by drilling operation, and the uncertainty and the randomness are very strong, so that the source load power is not matched, and the energy consumption is low. And offshore oil and gas operation equipment is damaged. The storage scheduling strategy depends on an electricity-hydrogen coupling energy storage system, and the storage state and the storage power of the energy storage system are adjusted by judging the output power of an offshore wind turbine and the load power of an oil-gas platform. According to the storage scheduling strategy, the dynamic balance of the source load power of the offshore oil and gas platform can be realized, and the safety problem caused by the volatility of offshore wind power and the uncertainty of the load power is solved; in addition, the flexibility and safety of an electric power system can be effectively improved, and large-scale and long-time storage of hydrogen energy green energy can be achieved.

Description

Technical Field

[0001] The present invention belongs to the field of energy storage technology, and in particular, relates to a storage and release scheduling strategy for an electric-hydrogen coupled energy storage system for an offshore oil and gas platform. Background Art

[0002] Since the beginning of the 21st century, the pace of global offshore oil and gas exploration and development has significantly accelerated. Total newly discovered offshore reserves have surpassed those onshore, and reserves and production continue to grow, making it a strategic replacement for global oil and gas resources. Compared to onshore oil and gas, offshore oil and gas production has its own unique characteristics in terms of energy consumption and greenhouse gas emissions. Driven by a desire for self-sufficiency and the full utilization of domestically produced oil and gas resources, offshore oil and gas platforms often build their own power and heat stations, using fuels such as associated gas and crude oil to meet their electricity and heat needs. This energy supply method generates significant carbon emissions and is plagued by low efficiency, high energy consumption, and unstable power supply. A currently established approach to connecting offshore oil and gas platforms to clean energy is to introduce wind power technology. However, offshore wind power output is highly uncertain and random, as it is affected by weather and load power by drilling operations. This leads to a mismatch between source and load power, potentially damaging offshore oil and gas equipment. Therefore, there is an urgent need for a storage and discharge scheduling strategy for an electric-hydrogen coupled energy storage system for offshore oil and gas platforms. The electric-hydrogen coupled energy storage system can achieve a dynamic balance of source and load power on offshore oil and gas platforms, solve the safety issues brought about by the volatility of offshore wind power and the uncertainty of load power, effectively improve the flexibility and safety of the power system, and realize large-scale and long-term storage of hydrogen green energy. Summary of the Invention

[0003] The purpose of the present invention is to provide a storage and release scheduling strategy for an electric-hydrogen coupled energy storage system for offshore oil and gas platforms to address the above-mentioned problems and technical requirements. The technical solution of the present invention is as follows:

[0004] A storage and discharge scheduling strategy for an electric-hydrogen coupled energy storage system for offshore oil and gas platforms;

[0005] The storage and release scheduling strategy is implemented by relying on a set of electric-hydrogen coupled energy storage system hardware;

[0006] The storage and discharge scheduling strategy adjusts the storage state and storage power of the energy storage system according to the output power of offshore wind power and the load power of the oil and gas platform;

[0007] The storage and release scheduling strategy includes the following steps:

[0008] Step 1: Obtain the total power consumption of production equipment and living facilities on offshore oil and gas platforms ;

[0009] Step 2: Calculate the rate of change of total power consumption caused by load fluctuations ;

[0010] The rate of change The calculation expression is

[0011]

[0012] Wherein, ∆t is the data collection interval of the electric-hydrogen coupled energy storage system; for The total power consumption at the time.

[0013] Step 3: Calculate the average power consumption of production equipment and living facilities on the offshore oil and gas platform during the ∆t period ;

[0014] The average power consumption The calculation expression is

[0015]

[0016] Step 4: Obtain the output power of the offshore wind turbine ;

[0017] Step 5, determining whether the electric-hydrogen coupled energy storage system stores hydrogen energy, includes:

[0018] Step 5.1, if , indicating that the output power of offshore wind turbines can meet the power consumption of production equipment and living facilities on offshore oil and gas platforms; among them, is the redundancy coefficient of the oil and gas platform, ranging from 1.1 to 1.2;

[0019] Step 5.2, if , indicating that the output power of the offshore wind turbine exceeds the normal power consumption of the production equipment and living facilities of the offshore oil and gas platform, and the overload power is ;Overload power of offshore wind turbines The electrolyzer uses seawater to produce hydrogen, and the produced hydrogen can be stored in a hydrogen storage tank;

[0020] Step 5.3, if , indicating that the output power of offshore wind turbines cannot meet the power consumption of production equipment and living facilities on offshore oil and gas platforms, and the power deficit is ; Power loss of offshore wind turbines The stored hydrogen energy is released and used to generate electricity through fuel cells to supplement the offshore oil and gas platforms.

[0021] The above solution of the present invention includes at least the following advantages and beneficial effects:

[0022] (1) This scheduling strategy utilizes an electric-hydrogen coupled energy storage system to achieve a dynamic balance of source and load power on offshore oil and gas platforms, addressing safety issues arising from the volatility of offshore wind power and the uncertainty of load power.

[0023] (2) This dispatching strategy can effectively improve the flexibility and security of the power system and realize the large-scale and long-term storage of hydrogen green energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 An embodiment of the present invention provides a storage and release scheduling strategy for an electric-hydrogen coupled energy storage system for an offshore oil and gas platform. DETAILED DESCRIPTION

[0025] The present invention will be further described below with reference to the accompanying drawings and specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Obviously, the embodiments of the present invention include but are not limited to the following examples.

[0026] This embodiment is directed to an electric-hydrogen coupled energy storage system for an offshore oil and gas platform, including an offshore oil and gas platform, an offshore wind turbine, an electrolyzer, a hydrogen storage tank, and a fuel cell.

[0027] See also Figure 1 , which is a storage and release scheduling strategy for an electric-hydrogen coupled energy storage system for an offshore oil and gas platform provided by an embodiment of the present invention. Figure 1 As shown, the storage and release scheduling strategy includes the following steps:

[0028] Step 1: Obtain the total power consumption of production equipment and living facilities on offshore oil and gas platforms ;

[0029] Step 2: Calculate the rate of change of total power consumption caused by load fluctuations ;

[0030] The rate of change The calculation expression is

[0031]

[0032] Among them, ∆t is the data collection interval of the electric-hydrogen coupled energy storage system.

[0033] Step 3: Calculate the average power consumption of production equipment and living facilities on the offshore oil and gas platform during the ∆t period ;

[0034] The average power consumption The calculation expression is

[0035]

[0036] Step 4: Obtain the output power of the offshore wind turbine ;

[0037] Step 5, determining whether the electric-hydrogen coupled energy storage system stores hydrogen energy, includes:

[0038] Step 5.1, if , indicating that the output power of offshore wind turbines can meet the power consumption of production equipment and living facilities on offshore oil and gas platforms; among them, is the redundancy coefficient of the oil and gas platform, ranging from 1.1 to 1.2;

[0039] Step 5.2, if , indicating that the output power of the offshore wind turbine exceeds the normal power consumption of the production equipment and living facilities of the offshore oil and gas platform, and the overload power is ;Overload power of offshore wind turbines The electrolyzer uses seawater to produce hydrogen, and the produced hydrogen can be stored in a hydrogen storage tank;

[0040] Step 5.3, if , indicating that the output power of offshore wind turbines cannot meet the power consumption of production equipment and living facilities on offshore oil and gas platforms, and the power deficit is ; Power loss of offshore wind turbines The stored hydrogen energy is released and used to generate electricity through fuel cells to supplement the offshore oil and gas platforms.

[0041] The above embodiment is only one of the embodiments of the present invention and is not intended to limit the scope of protection of the present invention. Any changes that adopt the design principles of the present invention and any changes made through non-creative work on this basis should fall within the scope of protection of the present invention.

Claims

1. A storage and release scheduling strategy for an electric-hydrogen coupled energy storage system for an offshore oil and gas platform, characterized by: The storage and discharge scheduling strategy adjusts the storage state and storage power of the energy storage system according to the output power of offshore wind power and the load power of the oil and gas platform; The storage and release scheduling strategy includes the following steps: Step 1: Obtain the total power consumption of production equipment and living facilities on offshore oil and gas platforms ; Step 2: Calculate the rate of change of total power consumption caused by load fluctuations ; The rate of change The calculation expression is ； Wherein, ∆t is the data collection interval of the electric-hydrogen coupled energy storage system; for Total power consumption at the time; Step 3: Calculate the average power consumption of production equipment and living facilities on the offshore oil and gas platform during the ∆t period ; The average power consumption The calculation expression is ； Step 4: Obtain the output power of the offshore wind turbine ; Step 5, determining whether the electric-hydrogen coupled energy storage system stores hydrogen energy, includes: Step 5.1, if , indicating that the output power of offshore wind turbines can meet the power consumption of production equipment and living facilities on offshore oil and gas platforms; among them, is the redundancy coefficient of the oil and gas platform, ranging from 1.1 to 1.2; Step 5.2, if , indicating that the output power of the offshore wind turbine exceeds the normal power consumption of the production equipment and living facilities of the offshore oil and gas platform, and the overload power is ;Overload power of offshore wind turbines The electrolyzer uses seawater to produce hydrogen, and the produced hydrogen can be stored in a hydrogen storage tank; Step 5.3, if , indicating that the output power of offshore wind turbines cannot meet the power consumption of production equipment and living facilities on offshore oil and gas platforms, and the power deficit is ; Power loss of offshore wind turbines The stored hydrogen energy is released and used to generate electricity through fuel cells to supplement the offshore oil and gas platforms.

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