Control method of sea-land symbiotic multi-energy complementary micro-grid hybrid control system

Abstract

The invention discloses a control method of a sea-land symbiotic multi-energy complementary micro-grid hybrid control system, and the method comprises the steps: adding an EMS regulation and control module in a sea-land symbiotic multi-energy complementary micro-grid system, and obtaining the connection state of the sea-land symbiotic multi-energy complementary micro-grid system and a power grid and the operation state information corresponding to the connection state through the EMS regulation and control module; the EMS regulation and control module judges a first preset condition and a second preset condition corresponding to the grid-connected mode and the off-grid mode respectively, and controls a working mode instruction of the land-sea symbiotic multi-energy complementary micro-grid system respectively according to a grid-connected energy regulation and control model and an off-grid energy regulation and control model; reasonable energy regulation and control and intelligent switching of the land-sea symbiotic multi-energy complementary micro-grid in the grid-connected and off-grid energy switching process are realized, so that the energy management and regulation and control efficiency of the land-sea symbiotic multi-energy complementary micro-grid system is improved.

Description

Technical Field

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

[0002] Microgrid refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads and monitoring and protection devices. It can be connected to the external power grid or run independently. In some remote areas or emergency situations, microgrids can provide stable and reliable power supply to the local area, while reducing dependence on traditional energy and improving the reliability and sustainability of power supply.

[0003] At present, the capacity configuration of the microgrid system is the most critical link, and the existing technology usually adopts a calculation scheme for overall evaluation of capacity configuration 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 the balance between supply and demand, 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, which not only meets the overall index requirements, but also meets the index requirements of each subsystem, solves the problems of energy regulation and intelligent switching during the switching of on-grid and off-grid energy, and improves the energy management and regulation efficiency of each controllable device in the land-sea symbiotic multi-energy complementary microgrid system, and 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 comprises a land-sea symbiotic multi-energy complementary microgrid system and an EMS control module, and the control method comprises: 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 yes, the EMS control module detects whether the grid-connected mode meets the first preset condition. If yes, the land-sea symbiotic multi-energy complementary microgrid system is controlled to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if no, the connection state is controlled 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 land-sea symbiotic multi-energy complementary microgrid system is controlled 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; Among them, the grid-connected energy control model and the off-grid energy control model are obtained through deep learning according to the operating status information.

[0006] 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. When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy regulation model, the EMS regulation module controls the offshore floating platform and the seabed energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the seabed 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 seabed energy storage platform together constitutes a distributed power supply end of the land-sea symbiotic multi-energy complementary microgrid system.

[0007] Controlling the land-sea symbiotic multi-energy complementary microgrid system to execute the 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 the distributed power supply end and a first required power 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; Determine 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; 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.

[0008] As a preferred embodiment of the above technical solution, determining the electricity price prediction data and the first power generation prediction data of the first future power supply according to the first operating state information includes: Determine a first future time according to the first operating state information Electricity price forecast data for power supply and the first power generation prediction data The first running 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 discharge volume of offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charging volume of 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 discharge volume of submarine energy storage platform and the electricity price at the time of discharge, minus the product of the effective charging volume of submarine energy storage and the electricity price at the time of charging.

[0009] As a preferred embodiment of the above technical solution, the EMS control module generates an energy control electricity price coupling optimal model function according to the first operating state 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: The EMS control module is configured to control the power price according to the first operating state information and the power price prediction 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: ; in, For the moment, For weather information, Current electricity price data, For the future Electricity price data at the moment, is the power generation prediction data, The first load demand power of the user side load, Compensate power for the mains.

[0010] 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 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 power generation 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 generation and the income from the offshore wind power generation grid connection; The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows: Calculate the power generation power and revenue of the offshore photovoltaic equipment according to the power balance and electricity price in the power grid; determine the number of offshore photovoltaic equipment to be turned on according to the first light resource environment, and calculate the power generation cost and power generation of the offshore photovoltaic equipment; and calculate the power generation cost and power generation of the offshore photovoltaic equipment accordingly; The process of the EMS control module controlling the grid-connected energy of the offshore wave energy device is as follows: Calculate the power generation and benefits of the offshore wave energy equipment according to the power balance and electricity price in the power grid; determine the number of offshore wave energy equipment to be turned on according to the first offshore wave energy resource environment, and calculate the power generation cost and power generation of the offshore wave energy equipment; and calculate the first offshore wave energy power generation and the benefits of the offshore wave energy power generation grid connection accordingly; The process of the EMS control module performing grid-connected 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 variable device, and 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 first offshore energy storage power generation power and the offshore energy storage power generation grid-connected income; The process of the EMS control module controlling the grid-connected energy of the submarine energy storage device is as follows: obtaining the device status, current power and output power of the energy storage converter of the submarine energy storage device, and determining the number of submarine energy storage devices to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage device; and correspondingly calculating the first submarine energy storage power generation power and the submarine energy storage power generation grid-connected income; 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).

[0011] 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: Obtaining a second total input power of the distributed power supply end 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 yes, 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 operation status information of the land-sea symbiotic multi-energy complementary microgrid system; Determine 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 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 instructions corresponding to the off-grid energy control model according to the off-grid energy control model.

[0012] 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: Determine a second future time according to the second operating state information Second generation power forecast data The second operation 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 seabed energy storage power generation power.

[0013] 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: The EMS control module is configured to control the output power of the second power generation module according to the second operating state information and the second power generation prediction data. Generate the optimal model function for energy regulation The energy regulation optimal model function The calculation expression is: ; in, For the moment, For weather information, is the power generation prediction data, The second load demand power of the user side load, It is the power compensation power for the diesel generator.

[0014] 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: The process of the EMS control module performing off-grid energy control on the offshore wind power equipment is as follows: calculating the power generation power of the offshore wind power equipment according to the target off-grid required power to obtain the second offshore wind power generation 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 demand 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: Calculate the power generation power of the offshore wave energy device according to the target off-grid demand power to obtain a second offshore wave energy power generation power; determine the number of offshore wave energy devices to be turned on according to the second offshore wave energy resource environment; calculate 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: Obtain the current power of the offshore energy storage device and the output power of the energy storage converter; determine 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 calculate the second offshore energy storage power generation power accordingly; The process of the EMS control module performing off-grid energy control on the submarine energy storage device is as follows: Obtain the equipment status, current power and output power of the energy storage converter of the submarine energy storage equipment; determine the number of submarine energy storage equipment to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage equipment; and calculate the power generation power of the second submarine energy storage accordingly; 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).

[0015] 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 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, so as to realize energy control and intelligent switching of the land-sea symbiotic multi-energy complementary microgrid in the process of grid-connected and off-grid energy switching, thereby improving the energy management and control efficiency of the land-sea symbiotic multi-energy complementary microgrid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A structural block diagram of the land-sea symbiotic multi-energy complementary microgrid hybrid control system provided by the present invention; Figure 2 The energy control principle diagram of the land-sea symbiotic multi-energy complementary microgrid provided by the present invention; Figure 3 A flow chart of a control method for a sea-land symbiotic multi-energy complementary microgrid hybrid control system provided by the present invention; Figure 4 A flow chart of grid-connected energy regulation provided by the present invention; Figure 5 Another flow chart of grid-connected energy regulation provided by the present invention; Figure 6 A flow chart of off-grid energy regulation provided by the present invention; Figure 7 A flow chart of another off-grid energy control provided by the present invention; Figure 8 A flow chart of the control of the grid-connected distributed power supply terminal provided by the present invention; Fig. 9 A flow chart of off-grid distributed power supply terminal regulation provided by the present invention.

[0018] The main component symbols are described as follows: 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; 40-EMS control module. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] See also 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 comprises a land-sea symbiotic multi-energy complementary microgrid system and an EMS control module, and the control method comprises: 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 operation status information corresponding to the connection status, and determines whether the connection status is a grid-connected mode; S2: If yes, the EMS control module detects whether the grid-connected mode meets the first preset condition. If yes, the land-sea symbiotic multi-energy complementary microgrid system is controlled to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if no, the connection state is controlled to switch from the grid-connected mode to the off-grid mode; S3: If not, the EMS control module detects whether the off-grid mode meets the second preset condition. If so, the land-sea symbiotic multi-energy complementary microgrid system is controlled 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; Among them, the grid-connected energy control model and the off-grid energy control model are obtained through deep learning according to the operating status information.

[0021] 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 diesel generators. When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy regulation model, the EMS regulation module controls the offshore floating platform and the seabed energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the seabed 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 seabed energy storage platform together constitute the distributed power supply end of the land-sea symbiotic multi-energy complementary microgrid system.

[0022] It should be noted that the submarine energy storage system is a new type of energy storage application scenario. It is an energy storage system for renewable energy integration, which uses offshore renewable energy to power the underwater energy storage system and generate electricity on demand. It can be used as a supplementary power supply to provide energy for the peak demand of the submarine system, allowing the distribution system to be adjusted according to the average demand rather than the system peak demand. At the same time, the submarine energy storage system can be used as a natural backup power function with low noise and other characteristics. The submarine energy storage system and industrial loads such as offshore wind power equipment, offshore energy storage equipment, offshore photovoltaic equipment, offshore wave energy equipment power generation and related island equipment constitute a land-sea symbiotic multi-energy complementary microgrid system. A microgrid system is a small, integrated power system that can operate independently of the central power grid or connect and work with the central power grid. The microgrid system usually includes distributed power sources, energy storage devices, energy conversion devices and related loads and monitoring and protection systems. These components work together to meet the power demand in a specific area while improving energy efficiency and system reliability. The above connection states include grid-connected mode and off-grid mode. The grid-connected mode refers to each device in the offshore floating platform 10 being connected to the grid, or the submarine energy storage platform 20 being connected to the grid; the off-grid mode refers to each device in the offshore floating platform 10 or the submarine energy storage platform 20 being directly connected to the user-side load in the island device. The offshore floating platform 10, the submarine energy storage platform 20, and the island device 30 are all connected to the EMS control module 40 through a communication optical cable, and the energy storage converter is connected to the circuit breaker through an AC bus.

[0023] In the off-grid mode, the offshore energy storage (offshore energy storage equipment) of the offshore floating platform 10 and the submarine energy storage realize the switching of the energy storage converter from the grid-connected mode to the off-grid mode through the switch of the 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 through the AC bus; the diesel generator is closed through the switching switch ATS and connected to the user-side load 31 through the AC bus. The proposal of the microgrid system aims to realize the flexible and efficient application of distributed power sources and solve the grid-connected and off-grid problems of a large number of distributed power sources in various forms. By developing and extending the microgrid system, it can fully promote the large-scale access of distributed power sources and renewable energy, realize the highly reliable supply of multiple energy forms to the load, and is an effective way to realize the active distribution network and make the transition from the traditional power grid to the smart grid.

[0024] 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, so as to realize the energy control and intelligent switching of the land-sea symbiotic multi-energy complementary microgrid in the process of grid-connected and off-grid energy switching, thereby improving the energy management and control efficiency of the land-sea symbiotic multi-energy complementary microgrid system.

[0025] See also 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: S10: Obtain a first total input power of the distributed power supply end 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; S11: If yes, adjust the mains power on the grid side for compensation; S12: If not, the first required power is provided by the distributed power supply end; S13: The EMS control module obtains first operating status information of the land-sea symbiotic multi-energy complementary microgrid system; 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; 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.

[0026] In this embodiment, determining the electricity price forecast data and the first power generation forecast data of the first future time according to the first operating state information includes: determining the first future time according to the first operating state information Electricity price forecast data for power supply and the first power generation prediction data The first running status information includes the current time Weather Information and current electricity prices The electricity price forecast data Including the income from the online access of offshore photovoltaic power generation, the income from the online access of offshore wind power generation, the income from the online access of offshore wave power generation, the income from the online access of offshore energy storage power generation, and the income from the online 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 offshore photovoltaic power generation grid-connected income is equal to the product of the photovoltaic power generation grid-connected electricity and the photovoltaic grid-connected electricity price minus the photovoltaic power generation cost, the offshore wind power generation grid-connected income is equal to the product of the offshore wind power grid-connected electricity and the offshore wind power grid-connected electricity price minus the offshore wind power generation cost, the offshore wave power generation grid-connected income is equal to the product of the offshore wave power grid-connected electricity and the offshore wave power grid-connected electricity price minus the offshore wave power generation cost; the offshore energy storage power generation grid-connected income is equal to the product of the effective discharge electricity of the offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charging electricity of the offshore energy storage and the electricity price at the time of charging; the submarine energy storage power generation grid-connected income is equal to the product of the effective discharge electricity of the submarine energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charging 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, thus determining the economy 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.

[0027] The EMS control module generates an energy control electricity price coupling optimal model function according to the first operating state 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: The EMS control module is configured to control the power price according to the first operating state information and the power price prediction 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: ; in, For the moment, For weather information, Current electricity price data, For the future Electricity price data at the moment, is the power generation prediction data, is the power demanded by the first load, Compensate power for the mains.

[0028] It should be noted that the grid-connected energy regulation process includes: obtaining the total input power of each distributed power supply end 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 end in the land-sea symbiotic multi-energy complementary microgrid system, the grid-side mains power is adjusted for compensation; if the sum of the power demand of multiple user-side loads is less than the total input power of each distributed power supply end in the land-sea symbiotic multi-energy complementary microgrid system, the power demand of the user-side loads is supplied by each distributed power supply; the EMS regulation 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 condition level, whether it is sunny, etc.; the future Electricity price forecast data for every moment and power generation forecast data Electricity price forecast data Including the grid-connected income 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 of various equipment on the offshore floating platform and submarine energy storage based on the deep learning results (grid-connected energy control model).

[0029] 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 model of energy control and electricity price coupling 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 based on the working mode of the control instruction; based on the power at the target grid connection point and the generated power of each device, the grid-side mains power is adjusted.

[0030] In a possible embodiment, if Figure 4 and Figure 8As shown, according to the grid-connected energy regulation model, controlling the distributed power supply terminal to execute the working mode instruction corresponding 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 power generation 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 generation and the income from the offshore wind power generation grid connection; Among them, the power grid refers to the external power grid, and the power balance includes the useful power balance and the reactive power balance. The active power balance is a prerequisite for ensuring that the frequency of the power system is stable within the specified range. In addition to considering the active power load on the user side, the active power consumption of the power system should also consider the network loss and the power load of the power plant. In other words, the total capacity of the system generator should not be less than the sum of the user side load, network loss and the power load of the power plant. Similar to the active power balance, the reactive power supplied by the power supply in the system (supplied by the generator and the compensation equipment) should be equal to the sum of the reactive power consumed by the load and the reactive power lost in the switch. Among them, the power balance here mainly refers to the effective power balance, that is, directly supplying power to the user side load.

[0031] In the above, the electricity price can be the unit price of electricity output to the user side, and the first wind resource environment can be wind strength, sea surface, sea conditions, etc. The power generation power of the above offshore wind power equipment is the power generation power required for the offshore wind power equipment to be used for power supply based on the power demand (total power) on the user side. The income of the offshore wind power equipment can be calculated based on the unit price of electricity and the total power. Combined with the current wind resource environment, the number of offshore wind power equipment turned on, i.e., the number of units, the first offshore wind power generation power and the income from the offshore wind power generation to the grid are calculated accordingly.

[0032] The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows: Calculate the power generation power and revenue of the offshore photovoltaic equipment according to the power balance and electricity price in the power grid; determine the number of offshore photovoltaic equipment to be turned on according to the first light resource environment, and calculate the power generation cost and power generation of the offshore photovoltaic equipment; and calculate the power generation cost and power generation of the offshore photovoltaic equipment accordingly; 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 first offshore photovoltaic power generation power and offshore photovoltaic power generation grid-connected income can be calculated accordingly.

[0033] The process of the EMS control module performing grid-connected energy control on the offshore wave energy device is as follows: calculating the power generation 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 turned on 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 power generation power and the income from the offshore wave energy power generation grid connection; Among them, the first offshore wave energy resource environment includes humidity, wind intensity, sea conditions, etc. The power generation power and income 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 by referring 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 income can be calculated accordingly.

[0034] The process of the EMS control module performing grid-connected 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, and 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 first offshore energy storage power generation power and the offshore energy storage power generation grid-connected income; Among them, the cut-off discharge conditions of the offshore energy storage equipment can be the stored capacity, discharge time, discharge current, etc., the charging cost can be the stored capacity of the offshore energy storage equipment, charging time, etc., the power generation income is calculated by the theoretical maximum power supply to the user side and the unit price of electricity, and the number of offshore energy storage equipment turned on. In fact, the corresponding calculations are the first offshore energy storage power generation power and the offshore energy storage power generation grid income.

[0035] The process of the EMS control module controlling the grid-connected energy of the submarine energy storage device is as follows: obtaining the device status, current power and output power of the energy storage converter of the submarine energy storage device, and determining the number of submarine energy storage devices to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage device; and correspondingly calculating the first submarine energy storage power generation power and the submarine energy storage power generation grid-connected income; Among them, the cut-off discharge conditions of the submarine energy storage equipment can be the stored capacity, discharge time, discharge current, etc., the charging cost can be the capacity of the submarine energy storage tank, charging time, etc., the power generation income is calculated by the theoretical maximum power supply to the user side and the unit price of electricity, and the number of submarine energy storage equipment turned on. In fact, the corresponding calculations are the submarine energy storage power generation and the submarine energy storage power generation grid income.

[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 status information, and 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, which 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 direct current into alternating current, 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 benefits 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-connected benefits are calculated accordingly.

[0037] The target start-up ratio of the distributed power supply terminal is determined based on the target grid connection point power and the power generation power at the grid connection point. Here, the above-mentioned EMS control module can be combined to execute S10-S15 in the grid-connected energy control and the corresponding first power generation 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 of normal operation of the distributed power supply terminal, based on the target grid connection point power and the power generation power at the grid connection point, the target start-up ratio of the distributed power supply terminal (that is, 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.

[0038] See also Figure 6 , according to the off-grid energy regulation model, the land-sea symbiotic multi-energy complementary microgrid system is controlled to execute the working mode instruction corresponding to the off-grid energy regulation model, that is, S3 includes: S20: Obtain a second total input power of the distributed power supply end and a second required power 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; S21: If yes, adjust the diesel generator to perform power compensation; S22: If not, the second required power is provided by the distributed power supply end; S23: the EMS control module obtains second operation status information of the land-sea symbiotic multi-energy complementary microgrid system; S24: determining second power generation prediction data for power generation at a second future time according to the second operating state information; 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 instructions corresponding to the off-grid energy control model according to the off-grid energy control model.

[0039] In this embodiment, determining second power generation prediction data for power generation at a second future moment according to the second operating state information includes: Determine a second future time according to the second operating state information Second generation power forecast data The second operation status information includes the current time and weather information The second power generation prediction data Including the second offshore photovoltaic power generation, the second offshore wind power generation, the second offshore wave power generation, the second offshore energy storage power generation and the second submarine energy storage power generation. 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 output power of the second power generation module according to the second operating state information and the second power generation prediction data. Generate the optimal model function for energy regulation The energy regulation optimal model function The calculation expression is: ; in, For the moment, For weather information, is the power generation prediction data, is the power demanded by the second load, It is the power compensation power for the diesel generator.

[0040] It should be noted that the off-grid energy regulation process includes: obtaining the total input power of each distributed power supply end 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 end in the land-sea symbiotic multi-energy complementary microgrid system, then adjust the diesel engine 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 end 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 regulation 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, and other characteristics. Determine the future according to the operating status information of the microgrid system The power generation prediction data at each moment; the 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 the optimal model function for energy control based on the above information data; the EMS control module performs deep learning based on the optimal model function for energy control to ensure the power optimization in the off-grid operation state; the EMS control module sends the working mode instructions for each device on the offshore floating platform, submarine energy storage, and diesel engine power generation based on the deep learning results.

[0041] 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 based on the working mode of the control instruction; based on the target off-grid required power and the power generation power of each device, the diesel engine power generation power is adjusted.

[0042] In a possible embodiment, if Figure 6 and Fig. 9 As shown, according to the off-grid energy regulation model, controlling the distributed power supply terminal to execute the working mode instruction corresponding 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 power generation power of the offshore wind power equipment according to the target off-grid required power to obtain the second offshore wind power generation 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. Among them, the offshore wind power equipment in the control process of the grid-connected distributed power supply end can be referred to, and the corresponding second offshore wind power generation power and offshore wind power grid-connected income can be obtained.

[0043] 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 demand 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. 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.

[0044] The process of the EMS control module performing off-grid energy control on the offshore wave energy device is as follows: Calculate the power generation power of the offshore wave energy device according to the target off-grid demand power to obtain a second offshore wave energy power generation power; determine the number of offshore wave energy devices to be turned on according to the second offshore wave energy resource environment; calculate the power generation cost and power generation of the offshore wave energy device; 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 the offshore wave energy power generation grid-connected income can be obtained.

[0045] 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; Among them, the offshore energy storage equipment in the control process of the grid-connected distributed power supply end can be referred to, and the corresponding second offshore energy storage power generation power and offshore energy storage power generation grid-connected income can be obtained.

[0046] The process of the EMS control module performing off-grid energy control on the submarine energy storage device is as follows: Obtain the equipment status, current power and output power of the energy storage converter of the submarine energy storage equipment; determine the number of submarine energy storage equipment to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage equipment; and calculate the power generation power of the second submarine energy storage accordingly; 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).

[0047] As described above, the power-type energy storage device can be used to charge and discharge the microgrid (the land-sea symbiotic multi-energy complementary microgrid is referred to as the microgrid), adjust the source-load power of the microgrid, and balance the microgrid to achieve the source-load power. Here, the above-mentioned EMS control module can be combined to execute S20-S25 in the off-grid energy control and the corresponding second power generation power prediction data, and the relevant instructions of the energy control optimal model function, which will not be repeated here. In other words, on the basis of meeting the overall index requirements and meeting the index requirements of each subsystem, the power-type energy storage device (offshore energy storage device, submarine energy storage device) charges and discharges the microgrid, and the source-load power of the microgrid can be adjusted to balance the microgrid to achieve the source (distributed power supply end) load (user-side load) power.

[0048] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0049] 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, further definition and explanation thereof is not required in subsequent drawings.

[0050] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A control method for a hybrid control system of a sea-land symbiotic multi-energy complementary microgrid, 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, and 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 yes, the EMS control module detects whether the grid-connected mode meets the first preset condition. If yes, the land-sea symbiotic multi-energy complementary microgrid system is controlled to execute the working mode instruction corresponding to the grid-connected energy control model according to the grid-connected energy control model; if no, the connection state is controlled 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 land-sea symbiotic multi-energy complementary microgrid system is controlled 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; Among them, the grid-connected energy control model and the off-grid energy control model are obtained through deep learning according to the operating status information.

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 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. When the land-sea symbiotic multi-energy complementary microgrid system executes the working mode instruction corresponding to the grid-connected energy regulation model, the EMS regulation module controls the offshore floating platform and the seabed energy storage platform to provide the input power of the grid-connected mode, and the offshore floating platform and the seabed 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 seabed energy storage platform together constitute 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: Controlling the land-sea symbiotic multi-energy complementary microgrid system to execute the 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 the distributed power supply end and a first required power 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; Determine 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; 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.

4. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 3 is characterized in that: 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: Determine a first future time according to the first operating state information Electricity price forecast data for power supply and the first power generation prediction data The first running 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 on-grid income 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 on-grid income 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 on-grid income 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 on-grid income of offshore energy storage power generation is equal to the product of the effective discharge volume of offshore energy storage equipment and the electricity price at the time of discharge, minus the product of the effective charging volume of offshore energy storage equipment and the electricity price at the time of charging; the on-grid income of submarine energy storage power generation is equal to the product of the effective discharge volume of submarine energy storage platform and the electricity price at the time of discharge, minus the product of the effective charging volume of submarine energy storage and the electricity price at the time of charging.

5. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 4 is characterized in that: The EMS control module generates an energy control electricity price coupling optimal model function according to the first operating state 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: The EMS control module is configured to control the power price according to the first operating state information and the power price prediction 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: ； in, For the moment, For weather information, Current electricity price data, For the future Electricity price data at the moment, is the power generation prediction data, The first load demand power of the user side load, Compensate power for the mains.

6. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 5 is characterized in that: Controlling the distributed power supply terminal to execute the 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 power generation 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 generation and the income from the offshore wind power generation grid connection; The process of the EMS control module performing grid-connected energy control on the offshore photovoltaic equipment is as follows: Calculate the power generation power and revenue of the offshore photovoltaic equipment according to the power balance and electricity price in the power grid; determine the number of offshore photovoltaic equipment to be turned on according to the first light resource environment, and calculate the power generation cost and power generation of the offshore photovoltaic equipment; and calculate the power generation cost and power generation of the offshore photovoltaic equipment accordingly; The process of the EMS control module controlling the grid-connected energy of the offshore wave energy device is as follows: Calculate the power generation and benefits of the offshore wave energy equipment according to the power balance and electricity price in the power grid; determine the number of offshore wave energy equipment to be turned on according to the first offshore wave energy resource environment, and calculate the power generation cost and power generation of the offshore wave energy equipment; and calculate the first offshore wave energy power generation and the benefits of the offshore wave energy power generation grid connection accordingly; The process of the EMS control module performing grid-connected 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 variable device, and 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 first offshore energy storage power generation power and the offshore energy storage power generation grid-connected income; The process of the EMS control module controlling the grid-connected energy of the submarine energy storage device is as follows: obtaining the device status, current power and output power of the energy storage converter of the submarine energy storage device, and determining the number of submarine energy storage devices to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage device; and correspondingly calculating the first submarine energy storage power generation power and the submarine energy storage power generation grid-connected income; 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).

7. 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 end 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 yes, 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 operation status information of the land-sea symbiotic multi-energy complementary microgrid system; Determine 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 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 instructions corresponding to the off-grid energy control model according to the off-grid energy control model.

8. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 7 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 generation power forecast data The second operation 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 seabed energy storage power generation power.

9. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 8 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 output power of the second power generation module according to the second operating state information and the second power generation prediction data. Generate the optimal model function for energy regulation The energy regulation optimal model function The calculation expression is: ； in, For the moment, For weather information, is the power generation prediction data, The second load demand power of the user side load, It is the power compensation power for the diesel generator.

10. The control method of the marine-land symbiotic multi-energy complementary microgrid hybrid control system according to claim 9 is characterized in that: 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: The process of the EMS control module performing off-grid energy control on the offshore wind power equipment is as follows: calculating the power generation power of the offshore wind power equipment according to the target off-grid required power to obtain the second offshore wind power generation 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 demand 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: Calculate the power generation power of the offshore wave energy device according to the target off-grid demand power to obtain a second offshore wave energy power generation power; determine the number of offshore wave energy devices to be turned on according to the second offshore wave energy resource environment; calculate 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: Obtain the current power of the offshore energy storage device and the output power of the energy storage converter; determine 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 calculate the second offshore energy storage power generation power accordingly; The process of the EMS control module performing off-grid energy control on the submarine energy storage device is as follows: Obtain the equipment status, current power and output power of the energy storage converter of the submarine energy storage equipment; determine the number of submarine energy storage equipment to be turned on according to the cut-off discharge conditions, charging costs and power generation income of the submarine energy storage equipment; and calculate the power generation power of the second submarine energy storage accordingly; 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).

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