A wind, solar, storage and grid-connected microgrid system container

Abstract

The utility model relates to a wind, solar, storage and grid-connected microgrid system container, which belongs to the field of new energy microgrid systems, and includes a container body, wherein the container body is internally installed with container industrial air conditioners, BMS battery packs, PCS cabinets, power distribution EMS cabinets, grid-connected cabinets, fire control boxes, photovoltaic inverters, HFC-227ea fire extinguishers, container lighting, smoke sensors, temperature sensors and emergency lighting, and the front of the container body is equipped with an installation door, and the interior of the container body is provided with an energy management system. The wind, solar, storage and grid-connected microgrid system container can be powered by the original diesel power grid, and can also be compatible with wind, light and storage microgrid power supply, making the system more compatible, thereby improving the stability and use efficiency of the system, and also having the advantages of low noise and high environmental protection, solving the problems of high noise, high vibration and low environmental protection generated by the existing diesel generator sets during operation.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy microgrid systems, and specifically to a wind-solar-storage-grid-connected microgrid system container. Background Art

[0002] Currently, there is a lack of fresh water resources in island areas, and island areas usually use seawater desalination technology to solve living and drinking water problems.

[0003] The island lacks a large power grid to provide power support for desalination equipment. Some island areas use diesel generator sets to solve the power supply problem of desalination equipment. Although diesel generator sets can solve the power supply problem of desalination equipment, they are noisy and vibrate violently when working and are not environmentally friendly. Therefore, a wind, solar, storage and grid-connected microgrid system container is designed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model provides a wind, solar, storage and grid-connected microgrid system container, which has the advantages of low noise and high environmental protection, and solves the problems of high noise, high vibration and low environmental protection of existing diesel generator sets during operation.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a wind-solar-storage-grid-connected microgrid system container, comprising a container body, wherein the container body is equipped with a container industrial air conditioner, a BMS battery pack, a PCS cabinet, a power distribution EMS cabinet, a grid-connected cabinet, a fire control box, a photovoltaic inverter, a HFC-227ea fire extinguisher, a container lighting, a smoke sensor, a temperature sensor and an emergency lighting, an installation door is installed on the front of the container body, and an energy management system is arranged inside the container body;

[0006] The BMS battery pack, PCS cabinet, power distribution EMS cabinet, and grid-connected cabinet are all installed on the inner bottom wall of the container body. The fire control box and photovoltaic inverter are fixed to the right side wall of the inner cavity of the container body by bolts. The emergency lighting is fixed to the front wall of the inner cavity of the container body. There are four container lightings, which are respectively fixed to the front and rear tops of the inner cavity of the container body. The smoke sensor, temperature sensor and HFC-227ea fire extinguisher are all fixed to the top wall of the inner cavity of the container body. The container industrial air conditioner is fixed to the inner cavity of the container body and close to its left end.

[0007] Furthermore, the BMS battery pack, PCS cabinet, power distribution EMS cabinet, and grid-connected cabinet are installed in parallel through the same steel trough base.

[0008] Furthermore, the smoke sensor, temperature sensor and HFC-227ea fire extinguisher are all electrically connected to the fire control box, and a double door is installed on the left side of the container body.

[0009] Furthermore, the power distribution EMS cabinet is connected to a three-way power supply system consisting of a BMS battery pack, a photovoltaic inverter and an external diesel power grid, and a protection switch is installed on the front of the grid-connected cabinet.

[0010] Furthermore, the grid-connected cabinet is electrically interlocked with the power distribution EMS cabinet.

[0011] Furthermore, the control power supply in the distribution EMS cabinet is connected by two power supplies: the microgrid and the diesel generator or the photovoltaic generator.

[0012] Furthermore, a maintenance socket is installed on the inner wall of the inner cavity of the container body.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] The wind, solar, and storage grid-connected microgrid system container can be powered by the original diesel power grid, and can also be compatible with wind, solar, and storage microgrids. The system has higher compatibility, thereby improving the stability and efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the energy management system of the utility model.

[0018] In the figure: 1 container industrial air conditioner, 2 BMS battery pack, 3 PCS cabinet, 4 power distribution EMS cabinet, 5 grid-connected cabinet, 6 fire control box, 7 photovoltaic inverter, 8 HFC-227ea fire extinguisher, 9 container lighting, 10 smoke sensor, 11 temperature sensor, 12 emergency lighting, 13 container body, 14 installation door, 41 energy management system. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figures 1 to 2In this embodiment, a wind-solar-storage-grid-connected microgrid system container includes a container body 13. The container body 13 is equipped with a container industrial air conditioner 1, a BMS battery pack 2, a PCS cabinet 3, a power distribution EMS cabinet 4, a grid-connected cabinet 5, a fire control box 6, a photovoltaic inverter 7, a heptafluoropropane fire extinguisher 8, a container lighting 9, a smoke sensor 10, a temperature sensor 11 and an emergency lighting 12. The front of the container body 13 is equipped with an installation door 14. The interior of the container body 13 is equipped with an energy management system 41, a BMS battery pack 2, a PCS cabinet 3, a power distribution EMS cabinet 4, a grid-connected cabinet 5, a fire control box 6, a photovoltaic inverter 7, a heptafluoropropane fire extinguisher 8, a container lighting 9, a smoke sensor 10, a temperature sensor 11 and an emergency lighting 12. The S cabinet 4 and the grid-connected cabinet 5 are both installed on the inner bottom wall of the container body 13, the fire control box 6 and the photovoltaic inverter 7 are both fixed to the right side wall of the inner cavity of the container body 13 by bolts, the emergency lighting 12 is fixed to the main wall of the inner cavity of the container body 13, there are four container lightings 9, and the four container lightings 9 are respectively fixed to the front and rear tops of the inner cavity of the container body 13, the smoke sensor 10, the temperature sensor 11 and the heptafluoropropane fire extinguisher 8 are all fixed to the top wall of the inner cavity of the container body 13, and the container industrial air conditioner 1 is fixed to the inner cavity of the container body 13 and close to its left end.

[0021] In this example, the BMS battery pack 2, PCS cabinet 3, distribution EMS cabinet 4, and grid-connected cabinet 5 are installed in parallel through the same steel trough base. The smoke sensor 10, temperature sensor 11 and HFC-227ea fire extinguisher 8 are all electrically connected to the fire control box 6. A double door is installed on the left side of the container body 13. The distribution EMS cabinet 4 is connected to the three-way power supply of the BMS battery pack 2, the photovoltaic inverter 7 and the external diesel power grid to ensure that the system AC bus continues to supply power to the load. A protection switch is installed on the front of the grid-connected cabinet 5. When the diesel power grid is abnormally repaired, the grid-connected cabinet 5 is electrically interlocked with the distribution EMS cabinet 4 to protect the safety of the maintenance personnel on the diesel power grid side. The control power supply in the distribution EMS cabinet 4 is connected by two power supplies from the microgrid and diesel or photovoltaic to ensure that the system control power supply is not interrupted. A maintenance socket is installed on the inner wall of the inner cavity of the container body 13.

[0022] It should be noted that it can be powered by raw diesel power grid, and can also be compatible with wind, solar and storage microgrid power supply. The system has higher compatibility, thereby improving the stability and efficiency of the system.

[0023] See also Figure 3In order to improve the stability and efficiency of the system, the energy management system 41 in this embodiment includes: 1 photovoltaic output switch, 2 photovoltaic input switch, 3 PCS external input switch, 4 STS, 5 PCS internal input switch, 6 PCS output switch, 7 BMS output switch, 8 BMS control box, 9 BMS battery pack, 10 diesel power grid, 11 bidirectional electricity meter, 12 grid isolation switch, 13 grid main switch, 14 first PCS switch, 15 distribution EMS bypass switch, 16 distribution EMS switch, 17 photovoltaic switch, 18 distribution EMS microgrid bypass Busbar, 19 second PCS switch, 20 distribution EMS desalination system busbar, 21 distribution EMS internal switch, 22 fan grid-connected power switch, 23 desalination system power switch, 24 desalination system contactor, 25 EMS external power switch, 26 EMS internal power switch, 27 container lighting power switch, 28 container fire protection power switch, 29 container maintenance power switch, 30 container air conditioning power switch, 31 container access control power switch, 32 fan control power switch, 33 ATS, 34 UPS, 35 power converter, 36 CPU, 37 HMI, 38 fan control inverter, 39 fan grid-connected inverter, 40 fan grid-connected switch.

[0024] In this example, the wind-solar-storage grid-connected microgrid system container in this application has three modes, including grid-connected mode, off-grid mode and maintenance bypass mode;

[0025] Grid-connected mode: The diesel power grid 10 passes through the grid disconnect switch 12, the grid main switch 13, the distribution EMS switch 16, the distribution EMS desalination system bus 20, and then passes through the desalination system power switch 23 and the desalination system contactor 24 to provide power to the desalination system, and at the same time, the microgrid system is powered by the EMS external power switch 25; the photovoltaic power generation is inverted by the photovoltaic input switch 2 and then connected to the photovoltaic switch 17 through the photovoltaic output switch 1, and connected to the grid cabinet AC bus, and together with the diesel generator, it supplies power to the desalination system and the microgrid system; the wind turbine power generation is converted from AC to DC by the wind turbine control inverter 38, and then connected to the distribution EMS microgrid bypass bus 18 through the wind turbine grid inverter 39, the wind turbine grid switch 40 and the wind turbine grid power switch 22, and then through the distribution EMS internal switch 21 to the EMS internal power. The power switch 26, container lighting power switch 27, container fire protection power switch 28, container maintenance power switch 29, container air conditioning power switch 30, container access control power switch 31, and fan control power switch 32 provide power for each distribution system. At the same time, the fan power generation is rectified by the second PCS switch 19 and the PCS internal input switch 5, and then passes through the PCS output switch 6, BMS output switch 7, and BMS control box 8 to charge the BMS battery pack 9; the photovoltaic / diesel power generation passes through the first PCS switch 14, the PCS external input switch 3, and STS4, and then is connected to the second PCS switch 19 through the PCS internal input switch 5 to power each distributed system in the distribution EMS cabinet, and at the same time is connected to the BMS output switch 7 through the PCS output switch 6 to charge the BMS battery;

[0026] Off-grid mode: The wind turbine generates electricity after AC-DC conversion by the wind turbine control inverter 38, and then is connected to the distribution EMS microgrid bypass bus 18 through the wind turbine grid-connected inverter 39, the wind turbine grid-connected switch 40 and the wind turbine grid-connected power switch 22, and then through the distribution EMS internal switch 21 to the EMS internal power switch 26, the container lighting power switch 27, the container fire protection power switch 28, the container maintenance power switch 29, the container air conditioning power switch 30, the container access control power switch 31, and the wind turbine control power switch 32 to supply power to various distribution systems. At the same time, after rectification by the second PCS switch 19 and the PCS internal input switch 5, it passes through the PCS output switch 6, the BMS output switch 7, and the BMS control box 8 to charge the BMS battery pack 9; the BMS battery pack 9 is rectified and inverted by the BMS control box 8 and the BMS output switch 7, and then connected to the PCS internal input switch 5 and the second PCS switch 19 to supply power to various distribution systems inside the container in the distribution EMS cabinet;

[0027] Maintenance bypass mode: When STS4 fails, manually disconnect the second PCS switch 19 and close the distribution EMS bypass switch 15, the grid isolation switch 12, the grid main switch 13, the photovoltaic switch 17, the photovoltaic input switch 2, the photovoltaic output switch 1, the distribution EMS internal switch 21, the wind turbine grid-connected power switch 22, and the wind turbine grid-connected switch 40 to directly supply power to the desalination load and various distribution systems in the container through diesel generation, photovoltaic and wind turbine power generation.

[0028] The energy management system 41 communicates with the bidirectional electricity meter 11, the external fan system, the photovoltaic system, and the BMS system to control the desalination contactor at the same time. The EMS system has a control strategy and is fully responsible for the management and scheduling of the system.

[0029] It can be understood that the electrical components appearing in the text are all electrically connected to the main controller and the power supply and the electrical components appearing in the text are all conventionally known devices, and this application will not go into too much detail. The main controller can be a conventionally known device that controls a computer, etc. The control circuit of the main controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and the utility model is mainly used to protect various distributed systems, so the utility model will no longer explain the control method and circuit connection in detail. At the same time, the parts not described in detail in the utility model are all known technologies to those skilled in the art.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0031] The working principle of the above embodiment is:

[0032] The distribution EMS cabinet 4 is powered by the BMS battery pack 2, the photovoltaic inverter 7 and the diesel power grid to ensure that the system AC bus continues to supply power to the load. The grid cabinet 5 is equipped with a protection switch to protect the safety of the maintenance personnel on the diesel power grid side when the diesel power grid is abnormally repaired. The grid cabinet 5 is interlocked with the distribution EMS cabinet and dispatched by the EMS system to protect the microgrid system from being connected to the grid. The control power supply in the distribution EMS cabinet 4 is powered by the microgrid and the diesel power generation or photovoltaic power generation to ensure that the system control power supply is not disconnected. The wind, solar, storage and grid-connected microgrid system container in this application has three modes, including grid-connected mode, off-grid mode and maintenance bypass mode;

[0033] Grid-connected mode: The diesel power grid 10 passes through the grid disconnect switch 12, the grid main switch 13, the distribution EMS switch 16, the distribution EMS desalination system bus 20, and then passes through the desalination system power switch 23 and the desalination system contactor 24 to provide power to the desalination system, and at the same time, the microgrid system is powered by the EMS external power switch 25; the photovoltaic power generation is inverted by the photovoltaic input switch 2 and then connected to the photovoltaic switch 17 through the photovoltaic output switch 1, and connected to the grid cabinet AC bus, and together with the diesel generator, it supplies power to the desalination system and the microgrid system; the wind turbine power generation is converted from AC to DC by the wind turbine control inverter 38, and then connected to the distribution EMS microgrid bypass bus 18 through the wind turbine grid inverter 39, the wind turbine grid switch 40 and the wind turbine grid power switch 22, and then through the distribution EMS internal switch 21 to the EMS internal power. The power switch 26, container lighting power switch 27, container fire protection power switch 28, container maintenance power switch 29, container air conditioning power switch 30, container access control power switch 31, and fan control power switch 32 provide power for each distribution system. At the same time, the fan power generation is rectified by the second PCS switch 19 and the PCS internal input switch 5, and then passes through the PCS output switch 6, BMS output switch 7, and BMS control box 8 to charge the BMS battery pack 9; the photovoltaic / diesel power generation passes through the first PCS switch 14, the PCS external input switch 3, and STS4, and then is connected to the second PCS switch 19 through the PCS internal input switch 5 to power each distributed system in the distribution EMS cabinet, and at the same time is connected to the BMS output switch 7 through the PCS output switch 6 to charge the BMS battery;

[0034] Off-grid mode: The wind turbine generates electricity after AC-DC conversion by the wind turbine control inverter 38, and then is connected to the distribution EMS microgrid bypass bus 18 through the wind turbine grid-connected inverter 39, the wind turbine grid-connected switch 40 and the wind turbine grid-connected power switch 22, and then through the distribution EMS internal switch 21 to the EMS internal power switch 26, the container lighting power switch 27, the container fire protection power switch 28, the container maintenance power switch 29, the container air conditioning power switch 30, the container access control power switch 31, and the wind turbine control power switch 32 to supply power to various distribution systems. At the same time, after rectification by the second PCS switch 19 and the PCS internal input switch 5, it passes through the PCS output switch 6, the BMS output switch 7, and the BMS control box 8 to charge the BMS battery pack 9; the BMS battery pack 9 is rectified and inverted by the BMS control box 8 and the BMS output switch 7, and then connected to the PCS internal input switch 5 and the second PCS switch 19 to supply power to various distribution systems inside the container in the distribution EMS cabinet;

[0035] Maintenance bypass mode: When STS4 fails, manually disconnect the second PCS switch 19 and close the distribution EMS bypass switch 15, the grid isolation switch 12, the grid main switch 13, the photovoltaic switch 17, the photovoltaic input switch 2, the photovoltaic output switch 1, the distribution EMS internal switch 21, the wind turbine grid-connected power switch 22, and the wind turbine grid-connected switch 40 to directly supply power to the desalination load and various distribution systems in the container through diesel generation, photovoltaic and wind turbine power generation.

[0036] The energy management system 41 communicates with the bidirectional electricity meter 11, the external fan system, the photovoltaic system, and the BMS system to simultaneously control the desalination contactor to realize the system. It has an internal control strategy and is fully responsible for the management and scheduling of the system.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A wind-solar-storage grid-connected microgrid system container, comprising a container body (13), characterized in that: The container body (13) is internally installed with a container industrial air conditioner (1), a BMS battery pack (2), a PCS cabinet (3), a power distribution EMS cabinet (4), a grid cabinet (5), a fire control box (6), a photovoltaic inverter (7), a heptafluoropropane fire extinguisher (8), a container lighting (9), a smoke sensor (10), a temperature sensor (11) and an emergency lighting (12); the front of the container body (13) is provided with an installation door (14); and the interior of the container body (13) is provided with an energy management system (41); The BMS battery pack (2), PCS cabinet (3), power distribution EMS cabinet (4), and grid cabinet (5) are all installed on the inner bottom wall of the container body (13); the fire control box (6) and the photovoltaic inverter (7) are fixed to the right side wall of the inner cavity of the container body (13) by bolts; the emergency lighting (12) is fixed to the front wall of the inner cavity of the container body (13); the number of the container lighting (9) is four, and the four container lighting (9) are respectively fixed to the front and rear tops of the inner cavity of the container body (13); the smoke sensor (10), the temperature sensor (11) and the heptafluoropropane fire extinguisher (8) are all fixed to the top wall of the inner cavity of the container body (13); and the container industrial air conditioner (1) is fixed to the inner cavity of the container body (13) and close to its left end.

2. A wind-solar-storage grid-connected microgrid system container according to claim 1, characterized in that: The BMS battery pack (2), PCS cabinet (3), power distribution EMS cabinet (4), and grid-connected cabinet (5) are installed in parallel through the same steel trough base.

3. A wind-solar-storage grid-connected microgrid system container according to claim 1, characterized in that: The smoke sensor (10), the temperature sensor (11) and the HFC-227ea fire extinguisher (8) are all electrically connected to the fire control box (6), and a double door is installed on the left side of the container body (13).

4. A wind-solar-storage grid-connected microgrid system container according to claim 1, characterized in that: The power distribution EMS cabinet (4) is connected to a three-way power supply system of a BMS battery pack (2), a photovoltaic inverter (7) and an external diesel power grid, and a protection switch is installed on the front of the grid-connected cabinet (5).

5. The wind-solar-storage grid-connected microgrid system container according to claim 1 is characterized by: The grid-connected cabinet (5) is electrically interlocked with the power distribution EMS cabinet (4).

6. A wind-solar-storage grid-connected microgrid system container according to claim 1, characterized in that: The control power supply in the power distribution EMS cabinet (4) is connected by two power supply lines: a microgrid and a diesel generator or a photovoltaic generator.

7. A wind-solar-storage grid-connected microgrid system container according to claim 1, characterized in that: An inspection socket is installed on the inner wall of the inner cavity of the container body (13).

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