Micro-grid system suitable for office park and control method thereof

Abstract

The invention discloses a micro-grid system suitable for an office park and a control method of the micro-grid system, and belongs to the technical field of micro-grid systems. The system comprises a grid-connected commutation unit, an access unit for wind and light storage and charging and an energy management unit; the grid-connected commutation unit is used for communication between the system and an external alternating-current power grid; the access unit for wind and light storage and charging is used for connecting, controlling and managing the four types of photovoltaic and vertical axis breeze generators, the energy storage integrated cabinet and the bidirectional direct current charging pile; four types of photovoltaic direct current are connected to a system bus; the vertical-axis breeze generator is accessed to the system bus after current conversion, the energy storage integrated cabinet is accessed to the system bus in a bidirectional direct-current manner, and the bidirectional direct-current charging pile is accessed to the system bus in a bidirectional direct-current manner; and the energy management unit is used for realizing scheduling of the micro-grid system through a built-in control program. According to the invention, the access and regulation of four types of photovoltaic and multi-type clean energy in the microgrid system in the park are improved, the efficient utilization of energy is realized, and the stability and reliability of the operation of the power grid are improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of microgrid systems, and particularly relates to a microgrid system suitable for an office park and a control method thereof. Background Art

[0002] In the context of sustainable development and energy transformation, the traditional centralized power supply mode faces many challenges. On the one hand, the increasing depletion of fossil energy and the environmental pressure brought by carbon emissions have prompted all parties to actively explore the efficient utilization of clean energy. On the other hand, with the continuous expansion of the scale of modern office parks, their demand for electricity continues to rise, and higher requirements are also put forward for power supply reliability and stability.

[0003] As a concentrated area of energy consumption, traditional power grids often have problems such as insufficient power supply and voltage fluctuations when dealing with the complex and changeable power demands of office parks, which affect the normal operation of office equipment and thus reduce work efficiency. Moreover, relying on a single power grid for power supply, once natural disasters or power grid failures occur, the park will face the risk of a complete power outage, causing huge economic losses.

[0004] As an improvement, currently emerging distributed energy technologies, such as solar photovoltaic power generation, wind power generation, energy storage systems, etc. These distributed energies can be deployed in office parks according to local conditions to achieve local production and consumption of energy. The development of microgrid technology has made it possible to integrate these distributed energies and build a small power system that is autonomous, controllable, efficient, and flexible. It can organically combine distributed power sources, energy storage devices, loads, etc. in the park to achieve optimal energy allocation, improve energy utilization efficiency, reduce electricity costs, and can also operate independently during power grid failures to ensure the continuous power supply of critical loads. The construction of office park microgrids is becoming a key measure to improve the energy management level of parks and achieve green and low-carbon development.

[0005] However, the existing microgrid system has a relatively single energy access structure, mainly taking the access of a single type of photovoltaic power generation as the main energy input method. The microgrid system modules are relatively single, unable to meet the office parks with high requirements for energy diversification and stability, and have certain limitations in the integrated integration, deep fusion, and comprehensive regulation of different types of photovoltaic and wind power clean energies. Summary of the Invention

[0006] The present invention provides a microgrid system suitable for an office park and a control method thereof, aiming to solve the problem that the existing microgrid system modules are relatively single, unable to meet the office parks with high requirements for energy diversification and stability, and have certain limitations in the integrated integration, deep fusion, and comprehensive regulation of different types of photovoltaic and wind power clean energies.

[0007] To achieve the above object, the present invention adopts the following technical solutions: The present invention provides a microgrid system applicable to an office park, including a grid-connected converter unit, a wind-solar-storage-charging access unit, and an energy management unit, wherein: The grid-connected converter unit: is used for connecting the microgrid system to the external AC grid; The wind-solar-storage-charging access unit: is used for connecting and controlling building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics at the guard booth, perovskite photovoltaic seats, vertical-axis micro wind turbines, integrated energy storage cabinets, and bidirectional DC charging piles; The building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics at the guard booth, and perovskite photovoltaic seats are used for DC access to the system bus; the vertical-axis micro wind turbines are connected to the system bus after commutation, the integrated energy storage cabinets are bidirectionally DC-connected to the system bus, and the bidirectional DC charging piles are bidirectionally DC-connected to the system bus; The energy management unit: is used for realizing the dispatching of the microgrid system through a built-in control program.

[0008] In some embodiments, the grid-connected converter unit includes a converter and a filter. The converter is used for converting the direct current of the microgrid system into alternating current, and the filter is used for filtering the converted alternating current and sending it to the external AC grid.

[0009] In some embodiments, the wind-solar-storage-charging access unit includes a plurality of interface modules, and each interface module is respectively connected to a kind of energy storage / charging device to realize the access and regulation of each energy storage / charging device.

[0010] In some embodiments, the energy management unit includes a data acquisition module, an analysis and calculation module, and a dispatching control module; The data acquisition module is used for real-time acquisition of system data, the analysis and calculation module is used for analyzing and calculating the energy supply and demand situation, and the dispatching control module is used for dispatching control according to the analysis result of the analysis and calculation module.

[0011] In some embodiments, the integrated energy storage cabinet includes a battery pack, a battery management system, and a power conversion system; the integrated energy storage cabinet is used for storing energy when the energy supply is excessive and releasing energy during peak electricity consumption.

[0012] In some embodiments, the bidirectional DC charging pile supports V2G; the bidirectional DC charging pile can: charge electric vehicles and realize reverse power transmission from electric vehicles to the microgrid system.

[0013] Furthermore, it further includes a DC power consumption demonstration area, which is arranged in the park exhibition hall. The DC power consumption demonstration area is used for demonstrating and realizing the DC power consumption of the microgrid system.

[0014] Further, it also includes a safety monitoring unit, which is used to monitor the operating status of the microgrid system in real time and issue an alarm when abnormalities are detected.

[0015] Further, it also includes a remote communication unit, which is used to realize the communication between the microgrid system and the remote monitoring center, facilitating remote monitoring and dispatching.

[0016] The present invention also provides a control method for a microgrid system applicable to an office park, including the following steps: S1. Real-time monitoring and acquisition: the DC parameters of the system bus, as well as the operating data of each clean energy device and energy storage / charging device; S2. Real-time monitoring of data, performing energy supply-demand balance analysis, evaluating the clean energy generation capacity, available capacity of energy storage devices, and electricity load demand within the current and future time intervals, and obtaining the energy supply-demand balance analysis result; S3. Based on the energy supply-demand balance analysis result, optimizing the output power of clean energy devices, adjusting the charge and discharge plan of energy storage devices, and controlling the working mode of bidirectional DC charging piles to form an intelligent scheduling strategy; S4. Based on the intelligent scheduling strategy, issuing scheduling instructions to each clean energy device and energy storage / charging device to perform corresponding control.

[0017] Compared with the prior art, a microgrid system applicable to an office park and its control method according to the present invention have the following beneficial effects: A microgrid system applicable to an office park according to the present invention improves the overall power generation efficiency and scenario coverage through the complementarity of four types of photovoltaic technologies. The vertical axis micro-wind generator makes up for the power generation gap at night / on rainy and cloudy days of the photovoltaic, enhancing the all-weather power supply capacity of the system. The direct DC access of photovoltaic, energy storage, and charging piles reduces the conversion link between AC and DC, reducing losses. The system of the present invention simplifies the layout and structure, reduces equipment costs and failure rates, uses the electric vehicles in the park as distributed energy storage resources, and feeds power back during peak electricity consumption, reducing the dependence on the power grid. And the present invention balances supply and demand in real time through the energy management unit, preferentially consumes renewable energy, reduces energy losses, and prolongs the battery life by dynamically adjusting the energy storage charge and discharge strategy. The present invention realizes the access and regulation of multiple types of clean energy such as monocrystalline silicon photovoltaic, cadmium telluride photovoltaic, perovskite photovoltaic, lightweight photovoltaic, and vertical axis micro-wind power generation in the microgrid in the park. With the application of energy storage devices and V2G bidirectional charging piles, the efficient utilization of energy is realized, and the stability and reliability of the power grid operation are improved. Description of the Drawings

[0018] The drawings in the specification are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute an improper limitation to the present invention.

[0019] Figure 1 This is a schematic diagram of the architecture of a microgrid system applicable to an office park according to the present invention. Detailed implementation manners

[0020] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. Components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

[0023] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper", "lower", "horizontal", "inner", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship in which the product of the invention is usually placed during use. This is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, terms such as "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the term "horizontal" is used, it does not mean that the component is required to be absolutely horizontal, but it can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined.

[0025] In the description of the embodiments of the present invention, it should also be noted that unless otherwise clearly specified and defined, if the terms "set", "install", "connect", and "couple" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] How to meet the high requirements for energy diversification and stability in office parks and break through the limitations in the integrated integration, deep fusion, and comprehensive regulation of different types of photovoltaic and wind power clean energies.

[0027] Based on this, as Figure 1 shown, the present invention provides a microgrid system applicable to office parks, including a grid-connected converter unit, a wind-solar-storage-charging access unit, and an energy management unit, wherein: Grid-connected converter unit: used for the connection between the microgrid system and the external AC grid; Wind-solar-storage-charging access unit: used to connect and control and manage building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics in the guard booth, perovskite photovoltaic seats, vertical-axis micro wind turbines, integrated energy storage cabinets, and bidirectional DC charging piles; Building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics in the guard booth, and perovskite photovoltaic seats are used for DC access to the system bus; the vertical-axis micro wind turbine is connected to the system bus after commutation, the integrated energy storage cabinet is bidirectionally DC-connected to the system bus, and the bidirectional DC charging pile is bidirectionally DC-connected to the system bus; Energy management unit: used to realize the scheduling of the microgrid system through the built-in control program.

[0028] The grid-connected converter unit of the present invention serves as the interface between the microgrid and the external AC grid, enabling bidirectional power flow. It completes the conversion between the DC bus and the AC grid through a converter, and the filter ensures that the output power quality meets the grid standards. The access unit for wind-solar-storage-charging integration in the present invention integrates various distributed energy sources and load devices to build a unified access platform with the DC bus as the core. The four types of photovoltaics in the present invention: Monocrystalline silicon photovoltaics on building roofs have high conversion efficiency and are suitable for large-scale deployment. Cadmium telluride photovoltaics on building roofs have excellent low-light performance, extending the power generation time. The lightweight photovoltaics for guard booths are relatively lightweight and are suitable for low-load-bearing scenarios. Perovskite photovoltaic seats are relatively flexible and can be adjusted flexibly to expand the space utilization of the park. In addition, the vertical-axis micro wind generator in the present invention is suitable for low-wind-speed environments and is connected to the DC bus after DC and AC conversion. The integrated energy storage cabinet serves as an energy buffer unit to suppress the fluctuations between power generation and load. The bidirectional DC charger: supports V2G, and electric vehicles serve as mobile energy storage units. Moreover, the energy management unit in the present invention realizes multi-objective control and optimization through data acquisition, data analysis, and scheduling closed-loop control. The built-in program of the energy management unit may integrate prediction algorithms and real-time optimization strategies, with better control accuracy and responsiveness.

[0029] In some embodiments, the grid-connected converter unit of the present invention uses a bidirectional AC / DC converter, which supports power transmission from the microgrid to the grid during grid connection and autonomous power supply during grid faults. The filter is used to filter out the high-order harmonics output by the converter to avoid polluting the grid. It can improve the conversion efficiency and response speed and adapt to the rapid changes in the park load.

[0030] The access unit for wind-solar-storage-charging integration in the present invention includes multiple interface modules, and each interface module is respectively connected to a type of energy storage / charging device to enable the access and regulation of each energy storage / charging device.

[0031] The access unit for wind-solar-storage-charging integration includes multiple interface modules, and each interface module is respectively connected to a type of energy storage / charging device to enable the access and regulation of each energy storage / charging device. In the access unit for wind-solar-storage-charging integration, monocrystalline silicon photovoltaics: Deployed on the main building roof to maximize the power generation per unit area. Cadmium telluride photovoltaics: Deployed in combination with monocrystalline silicon to utilize its low-light performance to increase the average daily power generation duration. Lightweight photovoltaics: Suitable for lightweight structures such as guard booths to avoid the load-bearing limitations of traditional photovoltaics. Perovskite photovoltaic seats: As a landscape energy facility, they have both functionality and promotional value. The vertical-axis micro wind generator adopts a vertical-axis design, which is suitable for the low-wind-speed and multi-directional change environment in the park. Compared with traditional horizontal-axis wind turbines, it has lower noise and is safer.

[0032] The integrated energy storage cabinet of the present invention includes a battery pack, a battery management system, and a power conversion system; the integrated energy storage cabinet is used to store energy when the energy supply is excessive and release energy during peak electricity consumption. The bidirectional DC charging pile supports V2G; the bidirectional DC charging pile can: charge electric vehicles and realize the reverse power supply from electric vehicles to the microgrid system. The integrated energy storage cabinet provides basic frequency regulation and peak shaving capabilities, and the V2G charging pile is used as a flexible supplement to form fixed and mobile energy storage units, enhancing the flexibility of system scheduling.

[0033] Further, the energy management unit of the present invention includes a data acquisition module, an analysis and calculation module, and a scheduling and control module; the data acquisition module is used to collect system data in real time, the analysis and calculation module is used to analyze and calculate the energy supply and demand situation, and the scheduling and control module is used to perform scheduling and control according to the analysis results of the analysis and calculation module.

[0034] In some specific working conditions, the data acquisition module obtains data such as bus voltage, photovoltaic, energy storage, and charging pile status in real time through smart meters and sensors. The analysis and calculation module predicts renewable energy in the next few hours based on meteorological data such as irradiance and wind speed. A plan is formulated with the goal of minimizing the electricity purchase cost or carbon emissions.

[0035] Further preferably, the microgrid system of the present invention displays DC electrical appliances through an exhibition hall to verify the feasibility of DC power supply, reduce conversion losses, and form a demonstration effect.

[0036] The microgrid system also includes a safety monitoring unit and a remote communication unit. The safety monitoring unit is used to monitor the operating status of the microgrid system in real time and issue an alarm when an abnormality is detected. The remote communication unit is used to realize the communication between the microgrid system and the remote monitoring center, facilitating remote monitoring and scheduling. The safety monitoring and remote communication units ensure the stable operation of the system and support energy management and fault diagnosis.

[0037] The safety monitoring unit monitors the safety status of the microgrid system in real time, including abnormal conditions such as equipment failures and abnormal voltage / current fluctuations. Once an abnormality is detected, an abnormal handling mechanism is immediately activated, including but not limited to issuing an alarm, taking protection measures, and adjusting the scheduling strategy, etc., to ensure that the microgrid system can respond quickly and resume stable operation in case of an abnormality.

[0038] The remote communication unit is used to realize real-time communication and data sharing between the microgrid system and the remote monitoring center. Data such as the operating status of the microgrid system, the analysis results of energy supply and demand, the scheduling control strategy, and the execution effect are uploaded to the remote monitoring center to support remote monitoring and decision-making. At the same time, instructions and feedback from the remote monitoring center are received to realize the remote management and control of the microgrid system.

[0039] The present invention also provides a control method for a microgrid system applicable to an office park. As an embodiment, the control method is specifically as follows: System initialization and configuration; Initialize the microgrid system, including the grid-connected converter unit, the access unit for wind-solar-storage-charging applications, and the energy management unit, to ensure that all devices are correctly connected and in a schedulable state. The configuration includes clean energy devices such as building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics for the guard booth, perovskite photovoltaic seats, and vertical axis micro wind turbines, as well as energy storage integrated cabinets, two-way DC charging piles and other energy storage / charging devices, to ensure that they can operate according to the preset parameters and strategies.

[0040] Real-time monitoring and data acquisition; Through the energy management unit, real-time monitor the operating state of the microgrid system, including DC parameters such as the voltage and current of the system bus, as well as key data such as the power generation power, energy storage state, and charging / discharging power of clean energy devices and energy storage / charging devices. Ensure the accuracy and real-time nature of the data to provide a reliable basis for subsequent energy supply-demand analysis and dispatching control.

[0041] Energy supply-demand analysis and prediction; Use the analysis and calculation module of the energy management unit to process and analyze the real-time monitored data to obtain the energy supply-demand situation at present and for a period of time in the future. This includes key indicators such as the total power generation of clean energy, the remaining capacity of energy storage devices, and the electricity load demand, as well as the balance relationship between them. At the same time, according to historical data and trends, predict the changing trends of future energy supply-demand to provide a scientific basis for the formulation of dispatching control strategies.

[0042] Formulation of dispatching control strategies; Based on the results of energy supply-demand analysis and prediction, the dispatching control module of the energy management unit formulates dispatching control strategies. This includes adjusting the output power of clean energy devices, controlling the charging and discharging plans of energy storage devices, and regulating the charging / discharging modes of two-way DC charging piles. The formulation of the strategy aims to achieve the efficient integration and utilization of energy while ensuring the stability and reliability of the microgrid system.

[0043] Issuance and execution of dispatching instructions; Send the formulated dispatching control strategies to each clean energy device and energy storage / charging device through the access unit for wind-solar-storage-charging applications. After receiving the instructions, the devices perform operations such as adjusting the angle of the photovoltaic panels, starting or stopping the wind turbine, and controlling the charging and discharging of the energy storage battery. Ensure the accurate transmission and execution of dispatching instructions to achieve precise control of the microgrid system.

[0044] The following further details a microgrid system applicable to an office park and its control method according to the present invention through specific embodiments.

[0045] As shown in Figure 1 the figure. Among them, the microgrid system includes a grid-connected converter unit, a wind-solar-storage-charging access unit, an energy management unit, building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics for the guard booth, perovskite photovoltaic seats, vertical-axis micro wind turbines, integrated energy storage cabinets, bidirectional DC charging piles, DC power consumption demonstration areas in the exhibition hall, and an AC power grid. The system bus is DC. Four types of photovoltaic DC access systems in the park, such as building rooftop monocrystalline silicon photovoltaics, building rooftop cadmium telluride photovoltaics, lightweight photovoltaics for the guard booth, and perovskite photovoltaic seats, and the vertical-axis micro wind turbines are connected to the system after rectification; the integrated energy storage cabinet is bidirectionally DC-connected, stores energy when the energy supply is excessive, and releases energy during peak electricity consumption; the V2G charging pile is bidirectionally DC-connected, can charge vehicles, and can also realize the reverse power transmission from the vehicle to the microgrid, thus realizing vehicle-grid interaction; a DC power consumption demonstration area is set up in the park exhibition hall to achieve the consumption of the microgrid; the above access is realized by the wind-solar-storage-charging access unit. The microgrid is connected to the AC power grid through the grid-connected converter unit. The energy management unit realizes the efficient scheduling of the microgrid system through the built-in control program. The present invention efficiently integrates diversified clean energy systems such as photovoltaics and wind power, solves the problem of difficult grid connection of individual wind power and photovoltaics, and improves the energy utilization rate of the system and enhances the stability and reliability of the power grid through energy storage and V2G bidirectional charging piles.

[0046] Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention; any ordinary technician in the industry can smoothly implement the present invention according to the description in the specification and the above description. Any equivalent changes made by slightly modifying and evolving the technical content disclosed above are equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A microgrid system suitable for an office park, characterized in that: It includes a grid-connected commutation unit, a wind-solar storage and charging access unit, and an energy management unit, among which: Grid-connected commutation unit: used to connect the microgrid system with the external AC power grid; Wind, solar, storage and charging access unit: used to connect and control the monocrystalline silicon photovoltaic on the roof of the building, the cadmium telluride photovoltaic on the roof of the building, the lightweight photovoltaic at the guard booth, the perovskite photovoltaic seat, the vertical axis breeze generator, the integrated energy storage cabinet and the bidirectional DC charging pile; Monocrystalline silicon photovoltaics on building roofs, cadmium telluride photovoltaics on building roofs, lightweight photovoltaics at guard booths, and perovskite photovoltaic seats are used for DC access to the system bus; vertical axis breeze generators are connected to the system bus after commutation, energy storage cabinets are bidirectionally connected to the system bus, and bidirectional DC charging piles are bidirectionally connected to the system bus; Energy management unit: used to realize the scheduling of microgrid system through built-in control program.

2. The microgrid system suitable for office parks according to claim 1, characterized in that: The grid-connected current conversion unit includes a converter and a filter. The converter is used to convert the direct current of the microgrid system into alternating current, and the filter is used to filter the converted alternating current and then send it to the external alternating current grid.

3. The microgrid system suitable for office parks according to claim 1, characterized in that: The wind / solar storage and charging access unit includes a plurality of interface modules, each of which is connected to a corresponding energy storage / charging device to achieve access and regulation of each energy storage / charging device.

4. The microgrid system suitable for office parks according to claim 1, characterized in that: The energy management unit includes a data acquisition module, an analysis and calculation module, and a scheduling control module; The data acquisition module is used to collect system data in real time, the analysis and calculation module is used to analyze and calculate the energy supply and demand, and the dispatching and control module is used to perform dispatching and control according to the analysis results of the analysis and calculation module.

5. The microgrid system suitable for office parks according to claim 1, characterized in that: The integrated energy storage cabinet includes a battery pack, a battery management system and a power conversion system; the integrated energy storage cabinet is used to store energy when there is an excess of energy supply and release energy during peak power consumption.

6. The microgrid system suitable for office parks according to claim 1, characterized in that: The bidirectional DC charging pile supports V2G; the bidirectional DC charging pile can: charge electric vehicles and realize the reverse power transmission from electric vehicles to the microgrid system.

7. The microgrid system suitable for office parks according to claim 1, characterized in that: It also includes a DC power consumption demonstration area, which is set up in the exhibition hall of the park. The DC power consumption demonstration area is used to display and realize the DC power consumption of the microgrid system.

8. The microgrid system suitable for office parks according to claim 1, characterized in that: It also includes a safety monitoring unit, which is used to monitor the operating status of the microgrid system in real time and issue an alarm when an abnormality is detected.

9. The microgrid system suitable for an office park according to claim 1, characterized in that: It also includes a remote communication unit, which is used to realize communication between the microgrid system and the remote monitoring center to facilitate remote monitoring and scheduling.

10. A control method for a microgrid system applicable to an office park according to any one of claims 1 to 9, characterized in that: The steps include: S1. Real-time monitoring and collection of: DC power parameters of the system bus, and operating data of each clean energy device and energy storage / charging device; S2. Real-time monitoring data, energy supply and demand balance analysis, evaluation of clean energy power generation capacity, available capacity of energy storage equipment and power load demand in the current and future time periods, and obtaining energy supply and demand balance analysis results; S3. Based on the results of energy supply and demand balance analysis, optimize the output power of clean energy equipment, adjust the charging and discharging plan of energy storage equipment, control the working mode of bidirectional DC charging piles, and form an intelligent scheduling strategy; S4. Based on the intelligent dispatching strategy, dispatching instructions are sent to each clean energy device and energy storage / charging device for corresponding control.

Images