A control method for a hybrid control system of a marine and land symbiotic multi-energy complementary microgrid

Abstract

The present invention discloses a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system. An EMS control module is added to the land-sea symbiotic multi-energy complementary microgrid system. The connection status of the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status are obtained through the EMS control module. The EMS control module determines the first preset condition and the second preset condition corresponding to the grid-connected mode and the off-grid mode, respectively, and controls the working mode instructions of the land-sea symbiotic multi-energy complementary microgrid system according to the grid-connected energy control model and the off-grid energy control model, respectively, to realize reasonable energy control and intelligent switching of the land-sea symbiotic multi-energy complementary microgrid in the grid-connected and off-grid energy switching process, thereby improving the energy management and control efficiency of the land-sea symbiotic multi-energy complementary microgrid system.

Description

Technical Field

[0001] The present invention belongs to the technical field of microgrids, and in particular relates to a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system. Background Art

[0002] A microgrid is a small-scale power generation and distribution system comprised of distributed power sources, energy storage devices, energy conversion devices, associated loads, and monitoring and protection devices. It can operate in parallel with an external power grid or independently off-grid. In remote areas or during emergencies, microgrids can provide a stable and reliable power supply, while also reducing reliance on traditional energy sources and improving the reliability and sustainability of power supply.

[0003] Currently, the capacity configuration of microgrid systems is the most critical link, and existing technologies generally use a calculation scheme for overall capacity configuration evaluation to achieve the optimization of the overall capacity configuration of the microgrid system. However, when capacity configuration is required for remote areas such as land-sea symbiotic microgrid systems, it is easy to ignore the operating status of the microgrid system during the on-grid and off-grid energy switching process to perform reasonable energy regulation, making it difficult to ensure supply and demand balance, resulting in low energy regulation efficiency of the land-sea symbiotic microgrid system. Therefore, it is urgent to provide a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system to solve the above-mentioned technical problems. Summary of the Invention

[0004] In view of this, the present invention provides a control method for a hybrid control system of a land-sea symbiotic multi-energy complementary microgrid. On the basis of meeting the overall index requirements, it also meets the index requirements of each subsystem, solves the problems of energy regulation and intelligent switching during the on-grid and off-grid energy switching process, and improves the energy management and regulation efficiency of each controllable device in the land-sea symbiotic multi-energy complementary microgrid system. It is specifically implemented by the following technical solutions.

[0005] The present invention provides a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system, wherein the land-sea symbiotic multi-energy complementary microgrid hybrid control system includes a land-sea symbiotic multi-energy complementary microgrid system and an EMS control module. The control method includes:

[0006] The EMS control module obtains the connection status of the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status, and determines whether the connection status is a grid-connected mode;

[0007] If so, the EMS control module detects whether the grid-connected mode meets the first preset condition. If so, the EMS control module controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if not, the EMS control module controls the connection state to switch from the grid-connected mode to the off-grid mode;

[0008] If not, the EMS control module detects whether the off-grid mode meets the second preset condition. If so, the EMS control module controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the off-grid energy control model according to the off-grid energy control model; if not, the connection state is controlled to switch from the off-grid mode to the grid-connected mode;

[0009] Among them, the grid-connected energy control model and the off-grid energy control model are obtained through deep learning based on the operating status information.

[0010] As a preferred embodiment of the above technical solution, the land-sea symbiotic multi-energy complementary microgrid system includes an offshore floating platform, a submarine energy storage platform and island equipment. The offshore floating platform, the submarine energy storage platform and the island equipment are all connected to the EMS control module. The offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment and the submarine energy storage platform are respectively connected to the power grid through their corresponding energy conversion devices. The island equipment includes multiple user-side loads and diesel generators.

[0011] When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy control model, the EMS control module controls the offshore floating platform and the submarine energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the submarine energy storage platform are connected to the user-side load;

[0012] When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the off-grid energy control model, the EMS control module controls the offshore energy storage equipment and the submarine energy storage platform to switch the energy storage converter from the grid-connected mode to the off-grid mode through the circuit breaker, the offshore floating platform and the submarine energy storage platform are connected to the user-side load, and the diesel generator is connected to the user-side load;

[0013] Among them, the diesel generator is used to supplement the backup power supply, and at least one of the offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment or the submarine energy storage platform together constitutes the distributed power supply end of the land-sea symbiotic multi-energy complementary microgrid system.

[0014] Controlling the land-sea symbiotic multi-energy complementary microgrid system to execute a working mode instruction corresponding to the grid-connected energy regulation model according to the grid-connected energy regulation model includes:

[0015] Obtaining a first total input power of the distributed power supply terminal and first required powers of multiple user-side loads, and determining whether the sum of the first required powers of the multiple user-side loads is greater than the first total input power;

[0016] If so, the mains power on the grid side is adjusted for compensation;

[0017] If not, the first required power is provided by the distributed power supply terminal;

[0018] The EMS control module obtains first operating status information of the land-sea symbiotic multi-energy complementary microgrid system;

[0019] Determining electricity price prediction data and first generated power prediction data for power supply at a first future moment according to the first operating state information;

[0020] The EMS control module generates an energy control electricity price coupling optimal model function based on the first operating status information, the electricity price forecast data and the first power generation power forecast data, and performs deep learning to obtain a grid-connected energy control model. According to the grid-connected energy control model, the distributed power supply end is controlled to execute the working mode instructions corresponding to the grid-connected energy control model.

[0021] As a preferred embodiment of the above technical solution, determining electricity price prediction data and first power generation prediction data for power supply at a first future moment according to the first operating state information includes:

[0022] Determine a first future time according to the first operating state information Power supply price forecast data and the first power generation forecast data The first operating status information includes the current time Weather Information and current electricity prices The electricity price forecast data Including the income from the on-grid access of offshore photovoltaic power generation, the income from the on-grid access of offshore wind power generation, the income from the on-grid access of offshore wave power generation, the income from the on-grid access of offshore energy storage power generation and the income from the on-grid access of submarine energy storage power generation; the first power generation power forecast data Including the first offshore photovoltaic power generation power, the first offshore wind power generation power, the first offshore wave power generation power, the first offshore energy storage power generation power and the first submarine energy storage power generation power;

[0023] The income from the on-grid access of offshore photovoltaic power generation is equal to the product of the on-grid electricity volume of photovoltaic power generation and the on-grid electricity price of photovoltaic power generation, minus the cost of photovoltaic power generation; the income from the on-grid access of offshore wind power generation is equal to the product of the on-grid electricity volume of offshore wind power generation and the on-grid electricity price of offshore wind power generation, minus the cost of offshore wind power generation; the income from the on-grid access of offshore wave power generation is equal to the product of the on-grid electricity volume of offshore wave power generation and the on-grid electricity price of offshore wave power generation, minus the cost of offshore wave power generation; the income from the on-grid access of offshore energy storage power generation is equal to the product of the effective discharged electricity volume of the offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charged electricity volume of the offshore energy storage equipment and the electricity price at the time of charging; the income from the on-grid access of submarine energy storage power generation is equal to the product of the effective discharged electricity volume of the submarine energy storage platform and the electricity price at the time of discharge, minus the product of the effective charged electricity volume of the submarine energy storage and the electricity price at the time of charging.

[0024] As a preferred embodiment of the above technical solution, the EMS control module generates an energy control price coupling optimal model function based on the first operating status information, the electricity price forecast data, and the first power generation power forecast data, and performs deep learning to obtain a grid-connected energy control model, including:

[0025] The EMS control module is configured to control the power price according to the first operating status information and the power price forecast data. and the first power generation prediction data Generate the optimal model function for energy regulation and electricity price coupling The energy regulation electricity price coupling optimal model function The calculation expression is:

[0026] ;

[0027] in, For the moment, For weather information, Current electricity price data, For the future Time-of-day electricity price data, is the power generation prediction data, The first load power requirement of the user side load is Compensate for the mains power.

[0028] As a preferred embodiment of the above technical solution, controlling the distributed power supply terminal to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model includes:

[0029] The EMS control module controls the grid-connected energy of the offshore wind turbine by: calculating the generated power and revenue of the offshore wind turbine based on the power balance and electricity price in the power grid; determining the number of operating offshore wind turbines based on the first wind resource environment, and calculating the generation cost and generated power of the offshore wind turbines; and correspondingly calculating the first offshore wind turbine generated power and the revenue from the offshore wind turbine generation;

[0030] The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows:

[0031] Calculating the power generation power and revenue of the offshore photovoltaic equipment based on the power balance and electricity price in the power grid; determining the number of offshore photovoltaic equipment to be turned on based on the first light resource environment, and calculating the power generation cost and power generation of the offshore photovoltaic equipment; and correspondingly calculating the power generation cost and power generation of the offshore photovoltaic equipment;

[0032] The process of the EMS control module performing grid-connected energy control on the offshore wave energy device is as follows:

[0033] Calculating the generated power and benefits of the offshore wave energy device based on the power balance and electricity price in the power grid; determining the number of offshore wave energy devices to be activated based on the first offshore wave energy resource environment, and calculating the power generation cost and power generation of the offshore wave energy device; and correspondingly calculating the first offshore wave energy generated power and the benefits of the offshore wave energy power generation grid connection;

[0034] The EMS control module controls the grid-connected energy of the offshore energy storage device by: obtaining the current power of the offshore energy storage device and the output power of the energy storage transformer, and determining the number of offshore energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the offshore energy storage device; and correspondingly calculating the first offshore energy storage power generation power and the offshore energy storage power generation grid-connected benefits;

[0035] The EMS control module controls the grid-connected energy of the subsea energy storage device by: obtaining the device status, current power, and output power of the energy storage converter of the subsea energy storage device; and determining the number of subsea energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation revenue of the subsea energy storage device; and correspondingly calculating the first subsea energy storage power generation power and the subsea energy storage power generation grid-connected revenue;

[0036] Among them, the first wind resource environment, the first light resource environment, the first offshore wave energy resource environment, the resource environment of the first offshore energy storage device, and the resource environment of the first submarine energy storage belong to the first operating state information, and the power balance and electricity price in the power grid are calculated according to formula (1).

[0037] As a preferred embodiment of the above technical solution, controlling the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the off-grid energy regulation model according to the off-grid energy regulation model includes:

[0038] Obtaining a second total input power of the distributed power supply terminal and a second required power of multiple user-side loads, and determining whether the sum of the second required powers of the multiple user-side loads is greater than the second total input power;

[0039] If so, the diesel generator is adjusted to perform power compensation;

[0040] If not, the second required power is provided by the distributed power supply terminal;

[0041] The EMS control module obtains second operating state information of the land-sea symbiotic multi-energy complementary microgrid system;

[0042] determining second power generation prediction data for power generation at a second future time according to the second operating state information;

[0043] The EMS control module generates an energy control optimal model function based on the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, and controls the distributed power supply end to execute the working mode instructions corresponding to the off-grid energy control model according to the off-grid energy control model.

[0044] As a preferred embodiment of the above technical solution, determining second power generation prediction data for power generation at a second future moment according to the second operating state information includes:

[0045] Determine a second future time according to the second operating state information Second power generation prediction data The second operating status information includes the current time and weather information The second power generation prediction data It includes the second offshore photovoltaic power generation power, the second offshore wind power generation power, the second offshore wave power generation power, the second offshore energy storage power generation power and the second submarine energy storage power generation power.

[0046] As a preferred embodiment of the above technical solution, the EMS control module generates an energy control optimal model function according to the second operating state information and the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, including:

[0047] The EMS control module is configured to control the second operating state information and the second power generation prediction data. Generate energy control optimal model function The energy control optimal model function The calculation expression is:

[0048] ;

[0049] in, For the moment, For weather information, is the power generation prediction data, The second load demand power of the user side load, Compensates power generation for diesel generators.

[0050] As a preferred embodiment of the above technical solution, controlling the distributed power supply terminal to execute the working mode instruction corresponding to the off-grid energy regulation model according to the off-grid energy regulation model includes:

[0051] The process of the EMS control module performing off-grid energy control on the offshore wind power equipment is as follows: calculating the generated power of the offshore wind power equipment according to the target off-grid required power to obtain a second offshore wind power generated power; determining the number of offshore wind power stations according to the second wind resource environment; and calculating the power generation cost and power generation of the offshore wind power equipment.

[0052] The process of the EMS control module performing off-grid energy control on the offshore photovoltaic equipment is as follows: calculating the power generation power of the offshore photovoltaic equipment according to the target off-grid required power to obtain a second offshore photovoltaic power generation power; determining the number of offshore photovoltaic equipment to be turned on according to the second light resource environment; and calculating the power generation cost and power generation of the offshore photovoltaic equipment.

[0053] The process of the EMS control module performing off-grid energy control on the offshore wave energy device is as follows:

[0054] calculating the power generation power of the offshore wave energy device according to the target off-grid power demand to obtain a second offshore wave energy power generation power; determining the number of offshore wave energy devices to be activated according to the second offshore wave energy resource environment; and calculating the power generation cost and power generation of the offshore wave energy device.

[0055] The process of the EMS control module performing off-grid energy control on the offshore energy storage device is as follows:

[0056] Obtaining the current power of the offshore energy storage device and the output power of the energy storage converter; determining the number of offshore energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the offshore energy storage device; and correspondingly calculating the second offshore energy storage power generation power;

[0057] The process of the EMS control module performing off-grid energy control on the submarine energy storage device is as follows:

[0058] Obtain the device status, current power, and output power of the energy storage converter of the subsea energy storage device; determine the number of subsea energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the subsea energy storage device; and calculate the corresponding power generation power of the second subsea energy storage device;

[0059] The second wind resource environment, the second light resource environment, the second offshore wave energy resource environment, the resource environment of the second offshore energy storage device, and the resource environment of the second submarine energy storage device belong to the second operating state information, and the target off-grid required power is calculated by formula (2).

[0060] The present invention provides a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system, wherein an EMS control module is added to the land-sea symbiotic multi-energy complementary microgrid system, and the connection status of the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status are obtained through the EMS control module. The EMS control module determines the first preset condition and the second preset condition corresponding to the grid-connected mode and the off-grid mode, respectively, and controls the working mode instructions of the land-sea symbiotic multi-energy complementary microgrid system according to the grid-connected energy control model and the off-grid energy control model, respectively, to realize energy control and intelligent switching of the land-sea symbiotic multi-energy complementary microgrid during the on-grid and off-grid energy switching process, thereby improving the energy management and control efficiency of the land-sea symbiotic multi-energy complementary microgrid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0062] Figure 1 This is a structural block diagram of the marine-land symbiotic multi-energy complementary microgrid hybrid control system provided by the present invention;

[0063] Figure 2 This is a schematic diagram of the energy control principle of the land-sea symbiotic multi-energy complementary microgrid provided by the present invention;

[0064] Figure 3 A flow chart of a control method for a marine-land symbiotic multi-energy complementary microgrid hybrid control system provided by the present invention;

[0065] Figure 4 A flow chart of grid-connected energy regulation provided by the present invention;

[0066] Figure 5 A flow chart of another grid-connected energy control provided by the present invention;

[0067] Figure 6 A flow chart of off-grid energy regulation provided by the present invention;

[0068] Figure 7 A flow chart of another off-grid energy control provided by the present invention;

[0069] Figure 8 A flow chart of the control of the grid-connected distributed power supply terminal provided by the present invention;

[0070] Figure 9 This is a flow chart of the off-grid distributed power supply terminal regulation provided by the present invention.

[0071] The main component symbols are described as follows:

[0072] 10-Offshore floating platform; 11-Offshore energy storage equipment; 12-Offshore photovoltaic equipment; 13-Offshore wind power equipment; 14-Offshore wave energy equipment; 20-Submarine energy storage platform; 30-Island equipment; 31-User-side load; 32-Diesel generator set; 40-EMS control module. DETAILED DESCRIPTION

[0073] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0074] See Figure 1 、 Figure 2 and Figure 3 The present invention provides a control method for a land-sea symbiotic multi-energy complementary microgrid hybrid control system, wherein the land-sea symbiotic multi-energy complementary microgrid hybrid control system includes a land-sea symbiotic multi-energy complementary microgrid system and an EMS control module. The control method includes:

[0075] S1: The EMS control module obtains the connection status of the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status, and determines whether the connection status is a grid-connected mode;

[0076] S2: If yes, the EMS control module detects whether the grid-connected mode meets the first preset condition. If yes, the EMS control module controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if not, the EMS control module controls the connection state to switch from the grid-connected mode to the off-grid mode;

[0077] S3: If not, the EMS control module detects whether the off-grid mode meets the second preset condition; if so, controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the off-grid energy control model according to the off-grid energy control model; if not, controls the connection state to switch from the off-grid mode to the grid-connected mode;

[0078] Among them, the grid-connected energy control model and the off-grid energy control model are obtained through deep learning based on the operating status information.

[0079] In this embodiment, the land-sea symbiotic multi-energy complementary microgrid system (hereinafter referred to as the microgrid system) includes an offshore floating platform, a submarine energy storage platform, and island equipment. The offshore floating platform, the submarine energy storage platform, and the island equipment are all connected to the EMS control module. The offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment, and the submarine energy storage platform are respectively connected to the power grid through their corresponding energy conversion devices. The island equipment includes multiple user-side loads and a diesel generator.

[0080] When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy control model, the EMS control module controls the offshore floating platform and the submarine energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the submarine energy storage platform are connected to the user-side load;

[0081] When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the off-grid energy control model, the EMS control module controls the offshore energy storage equipment and the submarine energy storage platform to switch the energy storage converter from the grid-connected mode to the off-grid mode through the circuit breaker, the offshore floating platform and the submarine energy storage platform are connected to the user-side load, and the diesel generator is connected to the user-side load;

[0082] Among them, the diesel generator is used to supplement the backup power supply, and at least one of the offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment or the submarine energy storage platform together constitutes the distributed power supply end of the land-sea symbiotic multi-energy complementary microgrid system.

[0083] It should be noted that submarine energy storage systems are a new type of energy storage application. They are used for renewable energy integration, utilizing offshore renewable energy to power the underwater storage system and generate electricity on demand. They can supplement peak demand on the submarine system, allowing the distribution system to adjust based on average demand rather than peak system demand. Subsea energy storage systems also provide a natural backup power source and offer low noise levels. Subsea energy storage systems, along with industrial loads such as offshore wind turbines, offshore energy storage, offshore photovoltaics, offshore wave power generation, and related island-based equipment, form a land-sea symbiotic, multi-energy, and complementary microgrid system. A microgrid is a small, integrated power system capable of operating independently of or in conjunction with the central power grid. It typically includes distributed power sources, energy storage devices, energy conversion equipment, and associated load and monitoring and protection systems. These components work together to meet the power needs of a specific area while improving energy efficiency and system reliability. The aforementioned connection states include grid-connected mode and off-grid mode. Grid-connected mode refers to the connection of all devices on offshore floating platform 10 or submarine energy storage platform 20 to the grid. Off-grid mode involves direct connection of all devices on offshore floating platform 10 or submarine energy storage platform 20 to the user-side loads on the island equipment. The offshore floating platform 10, submarine energy storage platform 20, and island equipment 30 are all connected to the EMS control module 40 via optical fiber communication cables, and the energy storage converter and circuit breaker are connected via the AC busbar.

[0084] In off-grid mode, the offshore energy storage (offshore energy storage equipment) of the offshore floating platform 10 and the submarine energy storage switch the energy storage converter from grid-connected mode to off-grid mode via a circuit breaker. The offshore floating platform 10 and the submarine energy storage are directly connected to the user-side load 31 of the island equipment 30 via the AC busbar. The diesel generator is switched on via the ATS and connected to the user-side load 31 via the AC busbar. The microgrid system aims to enable the flexible and efficient use of distributed power sources and address the grid-connected and off-grid issues of a large number of diverse distributed power sources. The development and expansion of microgrid systems can fully promote the large-scale integration of distributed power sources and renewable energy, achieving highly reliable supply of multiple energy forms to loads. This is an effective way to implement active distribution networks and transition from traditional power grids to smart grids.

[0085] It should be understood that the connection status between the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status are obtained through the EMS control module. The EMS control module determines the first preset condition and the second preset condition corresponding to the grid-connected mode and the off-grid mode, respectively, and controls the working mode instructions of the land-sea symbiotic multi-energy complementary microgrid system according to the grid-connected energy control model and the off-grid energy control model, respectively, to realize energy control and intelligent switching of the land-sea symbiotic multi-energy complementary microgrid during the grid-connected and off-grid energy switching process, thereby improving the energy management and control efficiency of the land-sea symbiotic multi-energy complementary microgrid system.

[0086] See Figure 4 According to the grid-connected energy regulation model, the land-sea symbiotic multi-energy complementary microgrid system is controlled to execute the working mode instruction corresponding to the grid-connected energy regulation model, that is, S2 includes:

[0087] S10: Obtain a first total input power of the distributed power supply terminal and first required powers of multiple user-side loads, and determine whether the sum of the first required powers of the multiple user-side loads is greater than the first total input power;

[0088] S11: If yes, adjust the mains power on the grid side for compensation;

[0089] S12: If not, the first required power is provided by the distributed power supply terminal;

[0090] S13: The EMS control module obtains first operating status information of the land-sea symbiotic multi-energy complementary microgrid system;

[0091] S14: Determining electricity price prediction data and first power generation prediction data for power supply at a first future moment according to the first operating state information;

[0092] S15: The EMS control module generates an energy control electricity price coupling optimal model function according to the first operating status information, the electricity price forecast data and the first power generation power forecast data, and performs deep learning to obtain a grid-connected energy control model, and controls the distributed power supply end to execute the working mode instructions corresponding to the grid-connected energy control model according to the grid-connected energy control model.

[0093] In this embodiment, determining the electricity price forecast data and the first power generation power forecast data of the first future time according to the first operating state information includes: determining the electricity price forecast data and the first power generation power forecast data of the first future time according to the first operating state information Power supply price forecast data and the first power generation forecast data The first operating status information includes the current time Weather Information and current electricity prices The electricity price forecast data Including the income from the on-grid access of offshore photovoltaic power generation, the income from the on-grid access of offshore wind power generation, the income from the on-grid access of offshore wave power generation, the income from the on-grid access of offshore energy storage power generation, and the income from the on-grid access of submarine energy storage power generation; the first power generation power forecast data Including a first offshore photovoltaic power generation power, a first offshore wind power generation power, a first offshore wave power generation power, a first offshore energy storage power generation power and a first submarine energy storage power generation power; the on-grid income of the offshore photovoltaic power generation is equal to the product of the on-grid electricity of photovoltaic power generation and the on-grid electricity price of photovoltaic power generation, minus the cost of photovoltaic power generation; the on-grid income of the offshore wind power generation is equal to the product of the on-grid electricity of offshore wind power generation and the on-grid electricity price of offshore wind power generation, minus the cost of offshore wind power generation; the on-grid income of the offshore wave power generation is equal to the product of the on-grid electricity of offshore wave power generation and the on-grid electricity price of offshore wave power generation, minus the cost of offshore wave power generation; the on-grid income of the offshore energy storage power generation is equal to the product of the effective discharged electricity of the offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charged electricity of the offshore energy storage and the electricity price at the time of charging; the on-grid income of the submarine energy storage power generation is equal to the product of the effective discharged electricity of the submarine energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charged electricity of the submarine energy storage equipment and the electricity price at the time of charging. Among them, EMS (Energy Management System) regulation is directly responsible for the control strategy of the energy storage system, which affects the decay rate and cycle life of the batteries in the system, thereby determining the economic efficiency of energy storage. On the other hand, it also monitors faults and anomalies in system operation, playing an important role in timely and rapid protection of equipment and ensuring safety.

[0094] The EMS control module generates an energy control price coupling optimal model function according to the first operating status information, the electricity price forecast data, and the first power generation power forecast data, and performs deep learning to obtain a grid-connected energy control model, that is, S15 includes:

[0095] The EMS control module is configured to control the power price according to the first operating status information and the power price forecast data. and the first power generation prediction data Generate the optimal model function for energy regulation and electricity price coupling The energy regulation electricity price coupling optimal model function The calculation expression is:

[0096] ;

[0097] in, For the moment, For weather information, Current electricity price data, For the future Time-of-day electricity price data, is the power generation prediction data, is the power demanded by the first load, Compensate for the mains power.

[0098] It should be noted that the grid-connected energy control process includes: obtaining the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system and the power requirements of multiple user-side loads in the microgrid system; if the sum of the power requirements of multiple user-side loads is greater than the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system, then adjusting the grid-side mains power for compensation; if the sum of the power requirements of multiple user-side loads is less than the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system, then the power requirements of the user-side loads are all supplied by each distributed power supply; the EMS control module obtains the operating status information of the microgrid system, including the current time, weather information W T and the current electricity price C T , weather information T It includes the current temperature, humidity, radiation intensity, wind intensity, sea surface, sea state level, whether it is sunny, etc.; it determines the future according to the operating status information of the microgrid system. Time-of-day power supply price forecast data and power generation forecast data Electricity price forecast data Including the income from the grid connection of offshore photovoltaic power generation, offshore wind power generation, offshore wave power generation, offshore energy storage power generation and submarine energy storage power generation. The power generation power prediction data includes offshore photovoltaic power generation, offshore wind power generation, offshore wave power generation, offshore energy storage power generation and submarine energy storage power generation. The EMS control module generates the optimal model function for energy control and electricity price coupling based on the above information data. The EMS control module performs deep learning based on the optimal model function for energy control and electricity price coupling to ensure the optimization of grid connection cost and power. The EMS control module sends the working mode instructions to various equipment on the offshore floating platform and submarine energy storage based on the deep learning results (grid-connected energy control model).

[0099] The above, such as Figure 5 As shown in the figure, the grid-connected control process of the land-sea symbiotic multi-energy complementary microgrid mainly includes: obtaining the total input power of the submarine energy storage microgrid system and the required power of the load; the EMS control module obtains the current weather information, the status of each system equipment and the current electricity price data; the EMS control module generates the optimal energy control and electricity price coupling model based on the information data; the EMS control module sends the working mode of each device on the offshore floating platform and the submarine energy storage; each device on the offshore floating platform and the submarine energy storage operate in the working mode based on the control instructions; based on the power of the target grid connection point and the generated power of each device, the grid-side mains power is adjusted.

[0100] In one possible embodiment, Figure 4 and Figure 8 As shown, controlling the distributed power supply terminal to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model includes:

[0101] The EMS control module controls the grid-connected energy of the offshore wind turbine by: calculating the generated power and revenue of the offshore wind turbine based on the power balance and electricity price in the power grid; determining the number of operating offshore wind turbines based on the first wind resource environment, and calculating the generation cost and generated power of the offshore wind turbines; and correspondingly calculating the first offshore wind turbine generated power and the revenue from the offshore wind turbine generation;

[0102] The power grid refers to the external power grid, and power balance includes both active power balance and reactive power balance. Active power balance is a prerequisite for maintaining power system frequency stability within specified limits. In addition to considering the active power load on the user side, the active power consumption of the power system should also take into account network losses and the power plant's auxiliary power load. In other words, the total capacity of the system's generators should be no less than the sum of the user side load, network losses, and the power plant's auxiliary power load. Similar to active power balance, the reactive power supplied by the system's power sources (generators and compensation equipment) should equal the sum of the reactive power consumed by the load and the reactive power lost in the switches. Power balance here primarily refers to effective power balance, meaning power directly supplied to the user side load.

[0103] The electricity price mentioned above can be the unit price of electricity delivered to the user, and the first wind resource environment can be wind intensity, sea level, sea conditions, etc. The generated power of the offshore wind turbine is the generated power required to supply the user's electricity demand (total electricity). The revenue of the offshore wind turbine can be calculated based on the unit price of electricity and the total electricity. Furthermore, the number of offshore wind turbines to be activated, i.e., the number of units, can be combined with the current wind resource environment to calculate the first offshore wind turbine generated power and the revenue generated by the offshore wind turbine connected to the grid.

[0104] The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows:

[0105] Calculating the power generation power and revenue of the offshore photovoltaic equipment based on the power balance and electricity price in the power grid; determining the number of offshore photovoltaic equipment to be turned on based on the first light resource environment, and calculating the power generation cost and power generation of the offshore photovoltaic equipment; and correspondingly calculating the power generation cost and power generation of the offshore photovoltaic equipment;

[0106] Among them, the first light resource environment includes temperature, light radiation intensity, sea surface, sea conditions, etc. The power generation power and income of the above-mentioned offshore photovoltaic equipment, the number of offshore photovoltaic equipment turned on, the power generation cost and power generation of the offshore photovoltaic equipment can be understood by referring to the above-mentioned offshore wind power equipment, and the corresponding calculations can be used to obtain the first offshore photovoltaic power generation power and the offshore photovoltaic power generation grid-connected income.

[0107] The EMS control module controls the grid-connected energy of the offshore wave energy device by: calculating the generated power and income of the offshore wave energy device according to the power balance and electricity price in the power grid; determining the number of offshore wave energy devices to be activated according to the first offshore wave energy resource environment, and calculating the power generation cost and power generation of the offshore wave energy device; and correspondingly calculating the first offshore wave energy generated power and the income from the offshore wave energy power generation grid connection;

[0108] Among them, the first offshore wave energy resource environment includes humidity, wind intensity, sea conditions, etc. The power generation power and benefits of the above-mentioned offshore wave energy equipment, the number of offshore photovoltaic equipment turned on, the power generation cost and power generation of offshore photovoltaic equipment can be understood with reference to the above-mentioned offshore wind power equipment, and the first offshore wave energy power generation power and offshore wave energy power generation grid-connected benefits can be calculated accordingly.

[0109] The EMS control module controls the grid-connected energy of the offshore energy storage device by: obtaining the current power of the offshore energy storage device and the output power of the energy storage converter, and determining the number of offshore energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the offshore energy storage device; and correspondingly calculating the first offshore energy storage power generation power and the offshore energy storage power generation grid-connected benefits;

[0110] The discharge cutoff conditions for offshore energy storage devices can include stored capacity, discharge time, and discharge current. The charging cost can be calculated based on the stored capacity and charging time. The power generation revenue is calculated based on the theoretical maximum power supply to users and the unit price of electricity. The number of offshore energy storage devices activated corresponds to the calculation of the first offshore energy storage power generation and the offshore energy storage power generation revenue.

[0111] The EMS control module controls the grid-connected energy of the subsea energy storage device by: obtaining the device status, current power, and output power of the energy storage converter of the subsea energy storage device; and determining the number of subsea energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation revenue of the subsea energy storage device; and correspondingly calculating the first subsea energy storage power generation power and the subsea energy storage power generation grid-connected revenue;

[0112] The cutoff discharge conditions for submarine energy storage devices can include stored capacity, discharge time, and discharge current. The charging cost can include the storage capacity and charging time of the submarine energy storage tank. The power generation revenue is calculated based on the theoretical maximum power supply to the user and the unit price of electricity. The number of submarine energy storage devices activated is also calculated. In practice, the corresponding calculations yield the submarine energy storage power generation and the revenue generated by the submarine energy storage grid.

[0113] Among them, the first wind resource environment, the first light resource environment, the first offshore wave energy resource environment, the resource environment of the first offshore energy storage device, and the resource environment of the first submarine energy storage belong to the first operating status information. The power balance and electricity price in the power grid are calculated according to formula (1). The equipment status of the offshore and submarine energy storage equipment includes whether it is working normally, the output power per unit time, etc. The energy storage converter is a bidirectional current controllable conversion device that connects the energy storage battery system and the power grid. It can accurately and quickly adjust the voltage, frequency, and power between the power grid and the energy storage system to achieve constant power and constant current charging and discharging and smooth fluctuating power supply output. The energy storage converter can not only meet the inversion requirements of traditional grid-connected converters for converting DC power into AC power, but also meet the bidirectional conversion brought by the "charging + discharging" of the energy storage system. The cut-off discharge conditions, charging costs and power generation income of the above-mentioned submarine energy storage equipment, and the number of submarine energy storage equipment opened can refer to the offshore energy storage equipment, and the first submarine energy storage power generation power and submarine energy storage power generation grid income are calculated accordingly.

[0114] The target start-up ratio of the distributed power supply terminal is determined based on the target grid connection point power and the generated power at the grid connection point. Here, the above-mentioned EMS control module can be combined to execute S10-S15 in the grid energy control and the corresponding first generated power prediction data, electricity price prediction data, and the energy control electricity price coupling optimal model function. The relevant instructions are not repeated here. In other words, on the basis of meeting the overall index requirements, the index requirements of each subsystem are met. Under the condition that the distributed power supply terminal is operating normally, based on the target grid connection point power and the generated power at the grid connection point, the target start-up ratio of the distributed power supply terminal (i.e., the equipment in the distributed power supply terminal) is determined. The target grid connection point power at the grid connection point is determined based on the target charge and discharge power (the charge and discharge power of the energy storage device) and the user-side load.

[0115] See Figure 6 , according to the off-grid energy regulation model, controlling the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the off-grid energy regulation model, that is, S3 includes:

[0116] S20: Obtain a second total input power of the distributed power supply terminal and second required powers of multiple user-side loads, and determine whether the sum of the second required powers of the multiple user-side loads is greater than the second total input power;

[0117] S21: If yes, adjust the diesel generator to perform power compensation;

[0118] S22: If not, the second required power is provided by the distributed power supply terminal;

[0119] S23: The EMS control module obtains second operating state information of the land-sea symbiotic multi-energy complementary microgrid system;

[0120] S24: Determine second power generation prediction data for power generation at a second future time according to the second operating state information;

[0121] S25: The EMS control module generates an energy control optimal model function according to the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, and controls the distributed power supply end to execute the working mode instruction corresponding to the off-grid energy control model according to the off-grid energy control model.

[0122] In this embodiment, determining second power generation prediction data for power generation at a second future time according to the second operating state information includes:

[0123] Determine a second future time according to the second operating state information Second power generation prediction data The second operating status information includes the current time and weather information The second power generation prediction data Including the second offshore photovoltaic power generation power, the second offshore wind power generation power, the second offshore wave power generation power, the second offshore energy storage power generation power and the second submarine energy storage power generation power. The EMS control module generates an energy control optimal model function based on the second operating state information and the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, including:

[0124] The EMS control module is configured to control the second operating state information and the second power generation prediction data. Generate energy control optimal model function The energy control optimal model function The calculation expression is:

[0125] ;

[0126] in, For the moment, For weather information, is the power generation prediction data, is the power demanded by the second load, Compensates power generation for diesel generators.

[0127] It should be noted that the off-grid energy control process includes: obtaining the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system and the power demand of multiple user-side loads in the microgrid system; if the sum of the power demand of multiple user-side loads is greater than the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system, then the diesel engine is adjusted to generate power compensation; if the sum of the power demand of multiple user-side loads is less than or equal to the total input power of each distributed power supply terminal in the land-sea symbiotic multi-energy complementary microgrid system, then the power demand of the user-side loads is supplied by each distributed power supply; the EMS control module obtains the operating status information of the microgrid system, and the operating status information includes the current time and weather information. The weather information includes the current temperature, humidity, radiation intensity, wind intensity, sea surface, sea condition level, whether it is sunny, etc. Determine the future according to the operating status information of the microgrid system Momentary power generation prediction data; power generation prediction data includes offshore photovoltaic power generation, offshore wind power generation, offshore wave power generation, offshore energy storage power generation and submarine energy storage power generation; the EMS control module generates an energy control optimal model function based on the above information data; the EMS control module performs deep learning based on the energy control optimal model function to ensure power optimization in off-grid operation; the EMS control module sends operating mode instructions to various equipment on the offshore floating platform, submarine energy storage, and diesel generator set based on the deep learning results.

[0128] The above, such as Figure 7 As shown in the figure, the off-grid control process of the land-sea symbiotic multi-energy complementary microgrid mainly includes: obtaining the total input power of the submarine energy storage microgrid system and the required power of the off-grid load; the EMS control module obtains the current weather information and the status data of each system equipment; the EMS control module generates the optimal energy control model based on the information data; the EMS control module sends the working mode of each device on the offshore floating platform and the submarine energy storage; each device on the offshore floating platform and the submarine energy storage operate in the working mode based on the control instructions; based on the target off-grid required power and the generated power of each device, the diesel engine power generation power is adjusted.

[0129] In one possible embodiment, Figure 6 and Figure 9 As shown, controlling the distributed power supply terminal to execute the working mode instruction corresponding to the off-grid energy regulation model according to the off-grid energy regulation model includes:

[0130] The process of the EMS control module performing off-grid energy control on the offshore wind power equipment is as follows: calculating the generated power of the offshore wind power equipment according to the target off-grid required power to obtain a second offshore wind power generated power; determining the number of offshore wind power stations according to the second wind resource environment; and calculating the power generation cost and power generation of the offshore wind power equipment.

[0131] Among them, the offshore wind power equipment in the process of regulating the grid-connected distributed power supply end can be referred to to obtain the second offshore wind power generation power and offshore wind power grid-connected income.

[0132] The process of the EMS control module performing off-grid energy control on the offshore photovoltaic equipment is as follows: calculating the power generation power of the offshore photovoltaic equipment according to the target off-grid required power to obtain a second offshore photovoltaic power generation power; determining the number of offshore photovoltaic equipment to be turned on according to the second light resource environment; and calculating the power generation cost and power generation of the offshore photovoltaic equipment.

[0133] Among them, the offshore photovoltaic equipment in the process of regulating the grid-connected distributed power supply can be referred to, and the second offshore photovoltaic power generation power and the offshore photovoltaic power generation grid-connected income can be calculated accordingly.

[0134] The process of the EMS control module performing off-grid energy control on the offshore wave energy device is as follows:

[0135] calculating the power generation power of the offshore wave energy device according to the target off-grid power demand to obtain a second offshore wave energy power generation power; determining the number of offshore wave energy devices to be activated according to the second offshore wave energy resource environment; and calculating the power generation cost and power generation of the offshore wave energy device.

[0136] Among them, the offshore wave energy equipment in the process of regulating the grid-connected distributed power supply end can be referred to, and the corresponding second offshore wave energy power generation power and offshore wave energy power generation grid-connected income can be obtained.

[0137] The process of the EMS control module performing off-grid energy control on the offshore energy storage device is as follows: obtaining the current power of the offshore energy storage device and the output power of the energy storage converter; determining the number of offshore energy storage devices to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the offshore energy storage device; and correspondingly calculating the second offshore energy storage power generation power;

[0138] Among them, the offshore energy storage equipment in the control process of the grid-connected distributed power supply end can be referred to to obtain the second offshore energy storage power generation power and the offshore energy storage power generation grid-connected income.

[0139] The process of the EMS control module performing off-grid energy control on the submarine energy storage device is as follows:

[0140] Obtain the device status, current power, and output power of the energy storage converter of the subsea energy storage device; determine the number of subsea energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the subsea energy storage device; and calculate the corresponding power generation power of the second subsea energy storage device;

[0141] The second wind resource environment, the second light resource environment, the second offshore wave energy resource environment, the resource environment of the second offshore energy storage device, and the resource environment of the second submarine energy storage device belong to the second operating state information, and the target off-grid required power is calculated by formula (2).

[0142] The above-mentioned power-type energy storage devices can charge and discharge the microgrid (a land-sea symbiotic multi-energy complementary microgrid, referred to as a microgrid), adjust the source-load power of the microgrid, and balance the microgrid to achieve the desired source-load power. This can be combined with the aforementioned EMS control module to execute S20-S25 in the off-grid energy control, along with the corresponding second generation power prediction data and the energy control optimal model function, and will not be further elaborated here. In other words, while meeting the overall performance requirements and the performance requirements of each subsystem, the power-type energy storage devices (offshore and submarine energy storage devices) charge and discharge the microgrid, adjusting the source-load power of the microgrid to achieve the desired source (distributed power supply) and load (user-side load) power balance.

[0143] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0144] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0145] The above-described embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that variations and modifications are possible without departing from the scope of the present invention, and such variations and modifications are fully within the scope of protection of the present invention.

Claims

1. A control method for a marine-land symbiotic multi-energy complementary microgrid hybrid control system, characterized in that: The land-sea symbiotic multi-energy complementary microgrid hybrid control system includes a land-sea symbiotic multi-energy complementary microgrid system and an EMS control module. The control method includes: The EMS control module obtains the connection status of the land-sea symbiotic multi-energy complementary microgrid system and the power grid and the operating status information corresponding to the connection status, and determines whether the connection status is a grid-connected mode; If so, the EMS control module detects whether the grid-connected mode meets the first preset condition. If so, the EMS control module controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if not, the EMS control module controls the connection state to switch from the grid-connected mode to the off-grid mode; If not, the EMS control module detects whether the off-grid mode meets the second preset condition. If so, the EMS control module controls the land-sea symbiotic multi-energy complementary microgrid system to execute the working mode instruction corresponding to the off-grid energy control model according to the off-grid energy control model; if not, the EMS control module controls the connection state to switch from the off-grid mode to the grid-connected mode; The grid-connected energy control model and the off-grid energy control model are obtained through deep learning according to the operating status information; Controlling the land-sea symbiotic multi-energy complementary microgrid system to execute a working mode instruction corresponding to the grid-connected energy regulation model according to the grid-connected energy regulation model includes: Obtaining a first total input power of a distributed power supply terminal and first required powers of multiple user-side loads, and determining whether the sum of the first required powers of the multiple user-side loads is greater than the first total input power; If so, the mains power on the grid side is adjusted for compensation; If not, the first required power is provided by the distributed power supply terminal; The EMS control module obtains first operating status information of the land-sea symbiotic multi-energy complementary microgrid system; Determining electricity price prediction data and first generated power prediction data for power supply at a first future moment according to the first operating state information; The EMS control module generates an energy control electricity price coupling optimal model function based on the first operating status information, the electricity price forecast data and the first power generation power forecast data, and performs deep learning to obtain a grid-connected energy control model. According to the grid-connected energy control model, the distributed power supply end is controlled to execute the working mode instructions corresponding to the grid-connected energy control model.

2. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 1 is characterized in that: The land-sea symbiotic multi-energy complementary microgrid system includes an offshore floating platform, a submarine energy storage platform and island equipment. The offshore floating platform, the submarine energy storage platform and the island equipment are all connected to the EMS control module. The offshore floating platform includes offshore energy storage equipment, offshore photovoltaic equipment, offshore wind power equipment and offshore wave energy equipment. The offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment and the submarine energy storage platform are respectively connected to the power grid through their respective corresponding energy conversion devices. The island equipment includes multiple user-side loads and diesel generators. When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy control model, the EMS control module controls the offshore floating platform and the submarine energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the submarine energy storage platform are connected to the user-side load; When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the off-grid energy control model, the EMS control module controls the offshore energy storage equipment and the submarine energy storage platform to switch the energy storage converter from the grid-connected mode to the off-grid mode through the circuit breaker, the offshore floating platform and the submarine energy storage platform are connected to the user-side load, and the diesel generator is connected to the user-side load; Among them, the diesel generator is used to supplement the backup power supply, and at least one of the offshore energy storage equipment, the offshore photovoltaic equipment, the offshore wind power equipment, the offshore wave energy equipment or the submarine energy storage platform together constitutes the distributed power supply end of the land-sea symbiotic multi-energy complementary microgrid system.

3. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 2 is characterized in that: Determining electricity price prediction data and first power generation power prediction data for power supply at a first future moment according to the first operating state information includes: Determine a first future time according to the first operating state information Power supply price forecast data and the first power generation forecast data , wherein the first operating status information includes the current time , weather information and current electricity prices , the electricity price forecast data Including the income from the on-grid access of offshore photovoltaic power generation, the income from the on-grid access of offshore wind power generation, the income from the on-grid access of offshore wave power generation, the income from the on-grid access of offshore energy storage power generation and the income from the on-grid access of submarine energy storage power generation; the first power generation power forecast data Including the first offshore photovoltaic power generation power, the first offshore wind power generation power, the first offshore wave power generation power, the first offshore energy storage power generation power and the first submarine energy storage power generation power; The income from the on-grid access of offshore photovoltaic power generation is equal to the product of the on-grid electricity volume of photovoltaic power generation and the on-grid electricity price of photovoltaic power generation, minus the cost of photovoltaic power generation; the income from the on-grid access of offshore wind power generation is equal to the product of the on-grid electricity volume of offshore wind power generation and the on-grid electricity price of offshore wind power generation, minus the cost of offshore wind power generation; the income from the on-grid access of offshore wave power generation is equal to the product of the on-grid electricity volume of offshore wave power generation and the on-grid electricity price of offshore wave power generation, minus the cost of offshore wave power generation; the income from the on-grid access of offshore energy storage power generation is equal to the product of the effective discharged electricity volume of the offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charged electricity volume of the offshore energy storage equipment and the electricity price at the time of charging; the income from the on-grid access of submarine energy storage power generation is equal to the product of the effective discharged electricity volume of the submarine energy storage platform and the electricity price at the time of discharge, minus the product of the effective charged electricity volume of the submarine energy storage and the electricity price at the time of charging.

4. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 3 is characterized in that: The EMS control module generates an energy control price coupling optimal model function according to the first operating state information, the electricity price forecast data, and the first generated power forecast data, and performs deep learning to obtain a grid-connected energy control model, including: The EMS control module is configured to control the power price according to the first operating status information and the power price forecast data. and the first power generation prediction data Generate the optimal model function for energy regulation and electricity price coupling , the energy regulation electricity price coupling optimal model function The calculation expression is: （1） Among them, T is the current time, W T For weather information, C T is the current electricity price data, C T+1 is the electricity price forecast data for the first future T+1 moment, P T+1 is the first power generation prediction data, The first load power requirement of the user side load is Compensate for the mains power.

5. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 4 is characterized in that: Controlling the distributed power supply terminal to execute a working mode instruction corresponding to the grid-connected energy regulation model according to the grid-connected energy regulation model includes: The process of the EMS control module performing grid-connected energy control on the offshore wind power equipment is as follows: calculating the generated power and income of the offshore wind power equipment according to the power balance and electricity price in the power grid; determining the number of operating offshore wind power equipment according to the first wind resource environment, and calculating the power generation cost and power generation of the offshore wind power equipment; and correspondingly calculating the first offshore wind power generated power and the income from the offshore wind power generation to the grid; The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows: calculating the generated power and income of the offshore photovoltaic equipment according to the power balance and electricity price in the power grid; determining the number of offshore photovoltaic equipment to be turned on according to the first light resource environment, and calculating the power generation cost and power generation of the offshore photovoltaic equipment; and obtaining the power generation cost and power generation of the offshore photovoltaic equipment by corresponding calculation; The EMS control module controls the grid-connected energy of the offshore wave energy device by: calculating the generated power and income of the offshore wave energy device according to the power balance and electricity price in the power grid; determining the number of offshore wave energy devices to be activated according to the first offshore wave energy resource environment, and calculating the power generation cost and power generation of the offshore wave energy device; and correspondingly calculating the first offshore wave energy generated power and the income from the offshore wave energy power generation grid connection; The EMS control module controls the grid-connected energy of the offshore energy storage device by: obtaining the current power of the offshore energy storage device and the output power of the energy storage transformer, and determining the number of offshore energy storage devices to be activated based on the cut-off discharge conditions, charging costs, and power generation benefits of the offshore energy storage device; and correspondingly calculating the first offshore energy storage power generation power and the offshore energy storage power generation grid-connected benefits; The EMS control module controls the grid-connected energy of the subsea energy storage platform by: obtaining the device status, current power, and output power of the energy storage converter of the subsea energy storage platform; and determining the number of devices to be activated on the subsea energy storage platform based on the cut-off discharge conditions, charging costs, and power generation revenue of the subsea energy storage platform; and correspondingly calculating the first subsea energy storage power generation power and the subsea energy storage power generation grid-connected revenue; Among them, the first wind resource environment, the first light resource environment, the first offshore wave energy resource environment, the resource environment of the offshore energy storage equipment, and the resource environment of the submarine energy storage platform belong to the first operating state information, and the power balance and electricity price in the power grid are calculated according to formula (1).

6. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 2 is characterized in that: Controlling the land-sea symbiotic multi-energy complementary microgrid system to execute a working mode instruction corresponding to the off-grid energy regulation model according to the off-grid energy regulation model includes: Obtaining a second total input power of the distributed power supply terminal and a second required power of multiple user-side loads, and determining whether the sum of the second required powers of the multiple user-side loads is greater than the second total input power; If so, the diesel generator is adjusted to perform power compensation; If not, the second required power is provided by the distributed power supply terminal; The EMS control module obtains second operating state information of the land-sea symbiotic multi-energy complementary microgrid system; determining second power generation prediction data for power generation at a second future time according to the second operating state information; The EMS control module generates an energy control optimal model function based on the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, and controls the distributed power supply end to execute the working mode instructions corresponding to the off-grid energy control model according to the off-grid energy control model.

7. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 6 is characterized in that: Determining second power generation prediction data for power generation at a second future time according to the second operating state information includes: Determine a second future time according to the second operating state information Second power generation prediction data , wherein the second operating status information includes the current time and weather information , the second power generation prediction data It includes the second offshore photovoltaic power generation power, the second offshore wind power generation power, the second offshore wave power generation power, the second offshore energy storage power generation power and the second submarine energy storage power generation power.

8. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 7 is characterized in that: The EMS control module generates an energy control optimal model function according to the second operating state information and the second power generation prediction data and performs deep learning to obtain an off-grid energy control model, including: The EMS control module is configured to control the second operating state information and the second power generation prediction data. Generate energy control optimal model function , the energy regulation optimal model function The calculation expression is: （2） in, For the second future moment, For weather information, is the second power generation prediction data, The second load demand power of the user side load, Compensates power generation for diesel generators.

9. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 8 is characterized in that: Controlling the distributed power supply terminal to execute a working mode instruction corresponding to the off-grid energy regulation model according to the off-grid energy regulation model includes: The process of the EMS control module performing off-grid energy control on the offshore wind power equipment is as follows: calculating the generated power of the offshore wind power equipment according to the target off-grid required power to obtain a second offshore wind power generated power; determining the number of offshore wind power stations according to the second wind resource environment; and calculating the power generation cost and power generation of the offshore wind power equipment. The process of the EMS control module performing off-grid energy control on the offshore photovoltaic equipment is as follows: calculating the power generation power of the offshore photovoltaic equipment according to the target off-grid required power to obtain a second offshore photovoltaic power generation power; determining the number of offshore photovoltaic equipment to be turned on according to the second light resource environment; and calculating the power generation cost and power generation of the offshore photovoltaic equipment. The process of the EMS control module performing off-grid energy control on the offshore wave energy device is as follows: calculating the power generation power of the offshore wave energy device according to the target off-grid required power to obtain a second offshore wave energy power generation power; determining the number of offshore wave energy devices to be activated according to the second offshore wave energy resource environment; and calculating the power generation cost and power generation of the offshore wave energy device. The process of the EMS control module performing off-grid energy control on the offshore energy storage device is as follows: obtaining the current power of the offshore energy storage device and the output power of the energy storage converter; determining the number of offshore energy storage devices to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the offshore energy storage device; and correspondingly calculating the second offshore energy storage power generation power; The process of the EMS control module performing off-grid energy control on the submarine energy storage platform is as follows: obtaining the equipment status, current power and output power of the energy storage converter of the submarine energy storage platform; determining the number of devices to be turned on on the submarine energy storage platform according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage platform; and correspondingly calculating the second submarine energy storage power generation power; The second wind resource environment, the second light resource environment, the second offshore wave energy resource environment, the resource environment of the offshore energy storage device, and the resource environment of the submarine energy storage platform belong to the second operating state information, and the target off-grid required power is calculated by formula (2).

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