Distributed micro-grid power station system based on methanol fuel and power output optimization method

Abstract

The application discloses a kind of distributed microgrid power station system and power output optimization method based on methanol fuel, belong to power generation technical field.System includes box, regulation and control device, methanol generator unit, battery energy storage unit and detection device, battery energy storage unit is set at the top of box by telescopic mechanism, support protection mechanism is arranged in the bottom of box, photovoltaic supplementary power device is arranged in the top of box;The power output optimization method based on the above system is also disclosed, which uses the above-mentioned distributed microgrid power station system and power output optimization method based on methanol fuel, uses methanol generator unit, battery energy storage unit and photovoltaic supplementary power device to form a microgrid power station for energy supply, realizes methanol generator unit to generate power with optimal working efficiency and store excess power, and achieves the effect of energy saving, battery energy storage unit is set at the top of box by telescopic mechanism, which facilitates the replacement and heat dissipation of battery energy storage unit.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power generation, in particular to a distributed micro-grid power station system based on methanol fuel and a power output optimization method. BACKGROUND

[0002] In the resource exploration and exploitation industry, communication and data field, and industrial and building electricity, the combination of distributed energy and micro-grid is adopted, and the existing technology adopts a methanol generator to replace the traditional diesel generator. For example, the outdoor box type methanol generator disclosed in the announcement No. CN221810865U sets the methanol generator set inside the box, so that the whole is convenient to move, and is convenient for various load use, and is suitable for outdoor work in various environments. However, for the application scene with large intermittent load fluctuation, since the intermittent load power belongs to nonlinear change, the methanol generator set is configured according to the maximum load power, and most of the time is in a redundant state. On the other hand, the intermittent load frequently starts and stops intermittently, and there are many short-term shutdown phenomena on site, and the generator needs to generate power continuously. At this time, the energy is in the waste stage. The simple methanol generator set provides power, and the methanol generator set can achieve greater energy saving at the optimal power generation power. Too high and too low output cannot achieve the purpose of energy saving. SUMMARY

[0003] The purpose of the present application is to provide a distributed micro-grid power station system based on methanol fuel and a power output optimization method to solve the above technical problems.

[0004] To achieve the above purpose, the present application provides a distributed micro-grid power station system based on methanol fuel, which comprises a box and a regulation and control device, and further comprises a methanol generator set and a battery energy storage unit. The methanol generator set is arranged in the box and electrically connected with the regulation and control device. The battery energy storage unit is arranged on the top of the box through a telescopic mechanism, and a support protection mechanism is arranged at the bottom of the box. The regulation and control device is provided with a data acquisition module for acquiring the required power data of the intermittent load, and is further provided with a detection device for detecting the environment inside and outside the box. A photovoltaic supplementary power generation device is arranged on the top of the box.

[0005] The detection device, the battery energy storage unit, the telescopic mechanism and the support protection mechanism are electrically connected with the regulation and control device.

[0006] Preferably, the telescopic mechanism comprises a telescopic arm, a plurality of fixed mounting plates and a plurality of lifting mounting plates are arranged on the telescopic arm, the fixed mounting plates and the lifting mounting plates are arranged alternately, and the plurality of lifting mounting plates are installed on the telescopic arm through lifting cylinders.

[0007] The battery energy storage unit comprises a plurality of parallel or series connected energy storage batteries, and the energy storage batteries are installed on the fixed mounting plates and the lifting mounting plates.

[0008] Preferably, the detection device comprises a first temperature sensor for detecting the temperature outside the box, a second temperature sensor arranged on the fixed mounting plate and the lifting mounting plate for detecting the energy storage battery, a third temperature sensor arranged on the generator of the methanol generator set for detecting the operating temperature of the generator, and a water level sensor and an inclination sensor arranged at the bottom of the box.

[0009] Preferably, the support protection mechanism comprises a support lifter arranged at the four corners of the box.

[0010] The bottom of the box is provided with a telescopic protection frame, and the telescopic protection frame comprises a telescopic rod, one end of the telescopic rod is provided with a folding motor, the output shaft of the folding motor is connected with a two-stage telescopic horizontal guide rail, two moving drive frames are slidably arranged on the two-stage telescopic horizontal guide rail, a telescopic frame is arranged between the two moving drive frames, the moving drive frame comprises a vertical guide plate, an upper moving rack and a lower moving rack are slidably arranged on the vertical guide plate, the upper moving rack and the lower moving rack are respectively engaged with two middle gears, the two middle gears are connected with a lifting drive motor, the lifting drive motor is mounted on the vertical guide plate, the upper moving rack and the lower moving rack are connected with a horizontal guide plate, a plurality of telescopic protection rods are slidably arranged in the horizontal guide plate, and the telescopic protection rods are hinged to the telescopic frame.

[0011] Preferably, the photovoltaic supplementary power generation device comprises an annular guide rail and a solar tracking controller, at least two angle adjustment lifters are arranged in the annular guide rail, an angle adjustment drive motor is mounted at the bottom of the angle adjustment lifter, the angle adjustment drive motor is engaged with the annular guide rail through a gear, and a photovoltaic module is connected to the lifting end of the angle adjustment lifter.

[0012] The angle adjustment lifter and the angle adjustment drive motor are electrically connected to the solar tracking controller, and the photovoltaic module is electrically connected to the energy storage battery.

[0013] Based on the power output optimization method of the above-mentioned methanol fuel-based distributed micro-grid power station system, the specific steps are as follows:

[0014] Step S1: Install the number of methanol fuel-based distributed micro-grid power station systems according to the engineering needs, and install them;

[0015] Step S2: The data acquisition module acquires the power data required by the intermittent load in real time, and acquires the operating data and prediction data of the methanol generator set, the battery energy storage unit and the photovoltaic supplementary power generation device;

[0016] Step S3: The regulation and control device calculates the optimization regulation and control strategy according to the data obtained in step S2; the optimization regulation and control strategy is used to control the methanol generator set, the battery energy storage unit and the photovoltaic supplementary power generation device and output the power required by the project.

[0017] Preferably, in step S1,

[0018] determining the number of the distributed methanol fuel-based micro-grid power station systems according to the maximum power required by the project, so that the total output power of the distributed methanol fuel-based micro-grid power station systems is greater than the maximum power required by the project;

[0019] In the installation process, the box is hoisted to the installation position by hoisting equipment, the support lift is extended to the maximum length, the telescopic rod is extended outward, the folding motor is started to set the second telescopic transverse guide rail away from the box, the two moving drive frames are started to lengthen the telescopic frame, the inclination sensor collects the inclination of the box, the telescopic amount of each of the four support lifts is controlled according to the inclination data, the lifting drive motor driving the upper moving rack is started to make the telescopic protection rod at the upper end of the telescopic frame extend synchronously, the minimum value of the telescopic amount of the four support lifts is calculated, and the minimum value is the moving amount of the lower moving rack, the lifting drive motor driving the lower moving rack is started to make the telescopic protection rod at the lower end of the telescopic frame extend synchronously, and the data of the water level sensor at the bottom of the box is collected in real time, and the four support lifts follow the water level data changes.

[0020] Preferably, in step S3,

[0021] ;

[0022] wherein, is the working power of the mth methanol generator set, is the optimal working power of the mth methanol generator set, is the working power fluctuation percentage coefficient of the mth methanol generator set, is the set working power fluctuation percentage coefficient of the mth methanol generator set; When the intermittent load is in intermittent shutdown or the intermittent load is in the trough, the methanol generator set and the photovoltaic supplementary power generation device supply power to the intermittent load while charging the battery energy storage unit; ;

[0023]

[0024] ;

[0025] ;

[0026] wherein, is the power required by the intermittent load, is the charging power of the battery energy storage unit, is the output power of the photovoltaic supplementary power generation device, is the number of methanol generator sets; is the battery energy storage unit power, ​​​The maximum power of the battery energy storage unit, The conversion coefficient of the photovoltaic module converted into the battery energy storage unit;

[0027] When When When the intermittent load is in the low valley of the continuous load, the M methanol generator sets are turned off, and the intermittent load is powered by the battery energy storage unit, the remaining methanol generator sets and the photovoltaic supplementary power generation device.

[0028] ;

[0029] ;

[0030] Wherein, The battery energy storage unit protection percentage coefficient, The output power of the battery energy storage unit.

[0031] Preferably, in the working process of the methanol fuel-based distributed micro-grid power station system, the data of the first temperature sensor and the second temperature sensor are collected in real time.

[0032] When the temperature of the energy storage battery collected by the second temperature sensor is higher than the first energy storage temperature setting value and not greater than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is not greater than the first outdoor temperature setting value, the heat dissipation box door corresponding to the energy storage battery is opened.

[0033] When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is greater than the first outdoor temperature setting value and not greater than the second outdoor temperature setting value, the telescopic arm is extended outward, the energy storage battery is stretched out of the box body, and the lifting cylinder is started to stagger the energy storage battery on the fixed mounting plate and the lifting mounting plate for heat dissipation.

[0034] When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is greater than the second outdoor temperature setting value, the battery energy storage unit stops running.

[0035] Preferably, in the output process of the methanol fuel-based distributed micro-grid power station system, the data of the third temperature sensor is collected in real time, when the running temperature of the generator collected by the third temperature sensor is higher than the first generator setting temperature, the heat dissipation box door corresponding to the generator is opened, and the heat dissipation fan of the generator is started, when the running temperature of the generator continues to rise to the second generator setting temperature, the generator stops running.

[0036] Therefore, the methanol fuel-based distributed micro-grid power station system and the power output optimization method have the beneficial effects that:

[0037] (1) The methanol generator set, the battery energy storage set and the photovoltaic supplementary power generation device are combined to form a micro power station to output electric energy, so that the methanol generator set can generate power at the optimal working efficiency and store the excess electric energy to achieve the energy saving effect when the load is low or intermittent.

[0038] (2) The battery energy storage set is arranged on the top of the box through the telescopic mechanism, so that the battery energy storage set can be replaced and cooled.

[0039] The technical solutions of the present application will be further described in detail below with reference to the drawings and embodiments. DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of a distributed micro-grid power station system based on methanol fuel.

[0041] Figure 2 It is a perspective view of the box.

[0042] Figure 3 It is a top view of the two-stage telescopic horizontal guide rail.

[0043] Figure 4 It is a schematic diagram of the back structure of the two-stage telescopic horizontal guide rail.

[0044] Figure 5 It is a practical running power diagram of a distributed micro-grid power station system based on methanol fuel.

[0045] REFERENCE NUMERALS

[0046] 1, box; 2, regulation and control device; 3, methanol generator set; 4, battery energy storage set; 5, telescopic mechanism; 51, telescopic arm; 52, fixed mounting plate; 53, lifting mounting plate; 54, lifting cylinder; 6, support protection mechanism; 61, support lifter; 62, telescopic protection frame; 621, telescopic rod; 622, folding motor; 623, two-stage telescopic horizontal guide rail; 6231, extension cylinder; 624, moving drive frame; 6241, vertical guide plate; 6242, upper moving rack; 6243, lower moving rack; 6244, lifting drive motor; 6245, horizontal guide plate; 625, telescopic frame; 626, telescopic protection rod; 7, photovoltaic supplementary power generation device; 71, annular guide rail; 72, angle adjustment lifter; 73, angle adjustment drive motor; 74, photovoltaic component. DETAILED DESCRIPTION

[0047] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0049] like Figure 1 As shown, a distributed microgrid power station system based on methanol fuel includes a housing 1, a control device 2, a methanol generator set 3, and a battery energy storage unit 4. The methanol generator set 3 is installed inside the housing 1 and electrically connected to the control device 2 to generate electricity using methanol as fuel. Using green methanol for power generation can save at least 800 yuan per ton compared to diesel, and using ordinary methanol for power generation can save at least 3,000 yuan per ton compared to diesel. As the main fuel, methanol reduces nitrogen oxide emissions by 74%, PM particulate matter emissions by 86%, and PN particulate matter emissions by 92% compared to diesel.

[0050] This embodiment uses drilling rigs in the resource exploration and mining industry as the power supply object, but the power supply object can be adjusted according to the actual project.

[0051] To ensure continuous and efficient power generation of the methanol generator set 3 during low-load or intermittent operation, a battery energy storage unit 4 is used to store excess power. The battery energy storage unit 4 is mounted on top of the housing 1 via a telescopic mechanism 5, facilitating replacement and heat dissipation. The telescopic mechanism 5 includes a telescopic arm 51 (driven by a cylinder or rack and pinion motor). The telescopic arm 51 is equipped with several fixed mounting plates 52 and several lifting mounting plates 53, which are alternately arranged. The lifting mounting plates 53 are mounted on the telescopic arm 51 via lifting cylinders 54. The battery energy storage unit 4 includes several energy storage batteries connected in parallel or series, mounted on the fixed mounting plates 52 and the lifting mounting plates 53. When the energy storage batteries inside the housing 1 overheat, they can extend outside the housing 1 under the action of the telescopic arm 51 for heat dissipation.

[0052] In this embodiment, a 200kW methanol generator set 3 and a 150kWh battery energy storage unit 4 are selected to operate in parallel to jointly bear the load of the drilling rig (replacing the original 300kW diesel generator set) and provide power for the drilling rig.

[0053] The control device 2 is equipped with a data acquisition module (WIFI module, 4G module, or 5G module, etc.) for obtaining the power data required by the drilling rig, which facilitates the control of the methanol generator set 3 and the battery energy storage unit 4 in the later stage.

[0054] A detection device for monitoring the internal and external environment of the tank is also provided. The location and number of sensors in the detection device are not shown in the figure; sensors can be added and installed as needed. The detection device includes a first temperature sensor for detecting the external temperature, second temperature sensors for detecting the energy storage battery installed on the fixed mounting plate 52 and the lifting mounting plate 53, a third temperature sensor for detecting the generator's operating temperature installed on the generator of the methanol generator set 3, and a water level sensor and a tilt sensor installed at the bottom of the tank 1. The first, second, and third temperature sensors, the water level sensor, and the tilt sensor are all electrically connected to the control device 2, enabling the transmission of detected data to the control device 2 for subsequent equipment control.

[0055] When installing the enclosure 1, it is necessary to adjust the installation position and set up a protective fence. In this embodiment, a support and protection mechanism 6 is set at the bottom of the enclosure 1. The support and protection mechanism 6 includes support lifts 61 set at the four corners of the enclosure 1, which are used to adjust the height of the enclosure 1, so as to facilitate the subsequent adjustment of the telescopic protective frame 62 and to raise the enclosure 1 in case of sudden flooding, thereby improving safety.

[0056] like Figures 2-4 As shown, a telescopic protective frame 62 is provided at the bottom of the box 1. The telescopic protective frame 62 includes a telescopic rod 621. Figure 2In order to show the telescopic rod 621 clearly, most of the parts are not assembled, one end of the telescopic rod 621 is provided with a folding motor 622, the output shaft of the folding motor 622 is connected with a two-stage telescopic transverse guide rail 623, the back of the two-stage telescopic transverse guide rail 623 is provided with an extension cylinder 6231, so that the two-stage telescopic transverse guide rail 623 is further extended, a larger range of protection is realized, and the two-stage telescopic transverse guide rail 623 is folded at the bottom of the box body 1 during transportation, which is convenient to use. Two moving drive frames 624 (using motor drive sliding) are slidably arranged on the two-stage telescopic transverse guide rail 623, a telescopic frame 625 is arranged between the two moving drive frames 624, the moving drive frame 624 comprises a vertical guide plate 6241, an upper moving rack 6242 and a lower moving rack 6243 are slidably arranged on the vertical guide plate 6241, the upper moving rack 6242 and the lower moving rack 6243 are respectively engaged with two middle gears, the two middle gears are connected with a lifting drive motor 6244, the lifting drive motor 6244 is installed on the vertical guide plate 6241, the upper moving rack 6242 and the lower moving rack 6243 are connected with a transverse guide plate 6245, a plurality of telescopic protection rods 626 are slidably arranged in the transverse guide plate 6245, and the telescopic protection rods 626 are hinged with the telescopic frame 625.

[0057] The top of the box body 1 is provided with a photovoltaic supplementary power generation device 7 for solar supplementary power generation, the photovoltaic supplementary power generation device 7 comprises an annular guide rail 71 and a sun tracking controller (prior art), at least two angle adjusting elevators 72 are arranged in the annular guide rail 71, an angle adjusting drive motor 73 is installed at the bottom of the angle adjusting elevator 72, the angle adjusting drive motor 73 is engaged with the annular guide rail 71 through a gear, a photovoltaic module 74 is connected to the lifting end of the angle adjusting elevator 72, the angle adjusting elevator 72 and the angle adjusting drive motor 73 are electrically connected with the sun tracking controller, and the photovoltaic module 74 is electrically connected with an energy storage battery.

[0058] The drilling machine in the resource exploration and exploitation industry is taken as an example of a power supply object, and based on the power output optimization method of the above-mentioned distributed micro-grid power station system based on methanol fuel, the specific steps are as follows:

[0059] Step S1: Install the number of distributed micro-grid power station systems based on methanol fuel according to the engineering needs, and install them. The number of distributed micro-grid power station systems based on methanol fuel is determined according to the maximum power required by the project, so that the total output power of the distributed micro-grid power station systems based on methanol fuel is greater than the maximum power required by the project.

[0060] In the installation process, the box body 1 is hoisted to the installation position by the hoisting equipment, the support lift 61 is extended to the maximum length, the telescopic rod 621 is extended outward, the folding motor 622 is started to make the second telescopic transverse guide rail 623 face away from the box body 1, the two moving drive frames 624 are started to lengthen the telescopic frame 625, the inclination sensor collects the inclination of the box body 1, the telescopic amount of each of the four support lifts 61 is controlled according to the inclination data, the lifting drive motor 6244 driving the upper moving rack 6242 is started to make the telescopic protection rod 626 at the upper end of the telescopic frame 625 extend synchronously, the minimum value of the telescopic amount of the four support lifts 61 is calculated, and the minimum value is the moving amount of the lower moving rack 6243, the lifting drive motor 6244 driving the lower moving rack 6243 is started to make the telescopic protection rod 626 at the lower end of the telescopic frame 625 extend synchronously, the data of the water level sensor at the bottom of the box body 1 is collected in real time, and the four support lifts 61 follow the water level data change.

[0061] Step S2: The data acquisition module acquires the required power data of the drilling rig in real time, acquires the operation data and prediction data of the methanol generator set 3, the battery energy storage set 4 and the photovoltaic supplementary power generation device 7;

[0062] Step S3: The regulation and control device 2 calculates the optimal regulation and control strategy according to the data acquired in step S2; the optimal regulation and control strategy is used to control the methanol generator set 3, the battery energy storage set 4 and the photovoltaic supplementary power generation device 7 and output the required power for drilling. As shown in the figure, the working states of the methanol generator set 3 and the battery energy storage set 4 are shown, and the photovoltaic power generation part is not shown in the figure. In step S3, Figure 5

[0063] ;

[0064] wherein, is the working power of the i th methanol generator set, is the optimal working power of the i th methanol generator set, is the working power fluctuation percentage coefficient of the i th methanol generator set, is the set working power fluctuation percentage coefficient of the i th methanol generator set, which is generally set to 2%-5%; ;

[0065] ;

[0066] ;

[0067] wherein, is the required power of the drilling rig, is the charging power of the battery energy storage set, ​​​​To supplement the output power of the photovoltaic power generation device, To the number of methanol generator sets; To the battery energy storage unit power, To the maximum power of the battery energy storage unit, To the conversion coefficient of the photovoltaic module converted into the battery energy storage unit;

[0068] When When And when the rig is in a persistent load trough, M methanol generator sets are turned off, and the rig is powered by the battery energy storage unit 4, the remaining methanol generator sets, and the photovoltaic supplementary power generation device 7.

[0069] ;

[0070] ;

[0071] Wherein, The battery energy storage unit protection percentage coefficient is used to avoid over-discharge of the battery energy storage unit, The battery energy storage unit output power.

[0072] In the output process of the distributed micro-grid power station system based on methanol fuel, the data of the first temperature sensor and the second temperature sensor are collected in real time.

[0073] When the temperature of the energy storage battery collected by the second temperature sensor is higher than the first energy storage temperature setting value and not greater than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is not greater than the first outdoor temperature setting value, open the heat dissipation box door of the corresponding energy storage battery of the box body.

[0074] When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is greater than the first outdoor temperature setting value and not greater than the second outdoor temperature setting value, the telescopic arm 51 is extended outward to extend the energy storage battery outside the box body 1, and the lifting cylinder 54 is started to stagger the energy storage batteries on the fixed mounting plate 52 and the lifting mounting plate 53 for heat dissipation.

[0075] When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the outdoor temperature collected by the first temperature sensor is greater than the second outdoor temperature setting value, the battery energy storage unit 4 stops running.

[0076] The safe operation of the energy storage battery is realized.

[0077] In the output process of the distributed micro-grid power station system based on methanol fuel, the data of the third temperature sensor is collected in real time, when the operating temperature of the generator collected by the third temperature sensor is higher than the first generator setting temperature, the cooling box door of the corresponding generator is opened, and the cooling fan of the generator is started, when the operating temperature of the generator continues to rise to the second generator setting temperature, the generator stops running, and the safe operation of the generator is realized.

[0078] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: it can still modify or equivalently replace the technical solutions of the present application, and these modifications or equivalent replacements also cannot make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present application.

Claims

1. A distributed micro-grid power plant system based on methanol fuel, comprising a box body and a regulation control device, characterized in that: The methanol generator set is arranged in the box and electrically connected with the regulation and control device; the battery energy storage unit is arranged on the top of the box through a telescopic mechanism, the telescopic mechanism comprises a telescopic arm, a plurality of fixed mounting plates and a plurality of lifting mounting plates are arranged on the telescopic arm, the fixed mounting plates and the lifting mounting plates are arranged alternately, and the plurality of lifting mounting plates are mounted on the telescopic arm through lifting cylinders; the detection device comprises a first temperature sensor for detecting the temperature outside the box, and a second temperature sensor for detecting the energy storage battery is arranged on the fixed mounting plate and the lifting mounting plate; The battery energy storage unit comprises a plurality of energy storage batteries connected in parallel or in series, and the energy storage batteries are mounted on the fixed mounting plate and the lifting mounting plate; during the working process of the distributed micro-grid power station system based on methanol fuel, the data of the first temperature sensor and the second temperature sensor are collected in real time; When the temperature of the energy storage battery collected by the second temperature sensor is higher than the first energy storage temperature setting value and not greater than the second energy storage temperature setting value, and the temperature outside the box collected by the first temperature sensor is not greater than the first temperature outside the box setting value, the heat dissipation door of the corresponding energy storage battery of the box is opened; When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the temperature outside the box collected by the first temperature sensor is greater than the first temperature outside the box setting value and not greater than the second temperature outside the box setting value, the telescopic arm is extended outward, the energy storage battery is stretched out of the box, and the lifting cylinder is started, so that the energy storage batteries on the fixed mounting plate and the lifting mounting plate are staggered for heat dissipation; When the temperature of the energy storage battery is higher than the second energy storage temperature setting value, and the temperature outside the box collected by the first temperature sensor is greater than the second temperature outside the box setting value, the battery energy storage unit stops running; The bottom of the box is provided with a support protection mechanism; the regulation and control device is provided with a data acquisition module for acquiring the power data required by the intermittent load, and is also provided with a detection device for detecting the environment inside and outside the box; the top of the box is provided with a photovoltaic supplementary power generation device; The detection device, the battery energy storage unit, the telescopic mechanism and the support protection mechanism are electrically connected with the regulation and control device.

2. A distributed micro-grid power plant system based on methanol fuel according to claim 1, characterized in that: The detection device further comprises a third temperature sensor arranged on the generator of the methanol generator set for detecting the operating temperature of the generator, and a water level sensor and an inclination sensor are arranged at the bottom of the box.

3. A distributed micro-grid power plant system based on methanol fuel according to claim 2, characterized in that: The support protection mechanism comprises support elevators arranged at the four corners of the box; The bottom of the box is provided with a telescopic protection frame, the telescopic protection frame comprises a telescopic rod, one end of the telescopic rod is provided with a folding motor, the output shaft of the folding motor is connected with a two-stage telescopic horizontal guide rail, two movable driving frames are slidably arranged on the two-stage telescopic horizontal guide rail, a telescopic frame is arranged between the two movable driving frames, the movable driving frame comprises a vertical guide plate, an upper movable rack and a lower movable rack are slidably arranged on the vertical guide plate, the upper movable rack and the lower movable rack are respectively engaged with two middle gears, the two middle gears are connected with lifting driving motors, the lifting driving motors are mounted on the vertical guide plate, the upper movable rack and the lower movable rack are connected with horizontal guide plates, a plurality of telescopic protection rods are slidably arranged in the horizontal guide plates, and the telescopic protection rods are hinged to the telescopic frame.

4. A distributed micro-grid power plant system based on methanol fuel according to claim 3, characterized in that: The photovoltaic supplementary power generation device comprises a ring-shaped guide rail, at least two angle-adjusting elevators arranged in the ring-shaped guide rail, an angle-adjusting drive motor mounted at the bottom of the angle-adjusting elevator, and a photovoltaic module connected to the lifting end of the angle-adjusting elevator; The angle-adjusting elevator and the angle-adjusting drive motor are electrically connected with the sun tracking controller, and the photovoltaic module is electrically connected with the energy storage battery.

5. A power output optimization method characterized by, The power output optimization method is based on the distributed micro-grid power station system based on methanol fuel in claim 4, and the specific steps are as follows: Step S1: install the number of distributed micro-grid power station systems based on methanol fuel according to the engineering needs, and install them; Step S2: the data acquisition module acquires the power data required by the intermittent load in real time, acquires the operation data and prediction data of the methanol generator set, the battery energy storage unit and the photovoltaic supplementary power generation device; Step S3: the regulation and control device calculates the optimization regulation and control strategy according to the data acquired in step S2; the optimization regulation and control strategy is used to control the methanol generator set, the battery energy storage unit and the photovoltaic supplementary power generation device and output the power required by the project.

6. The power output optimization method of claim 5, wherein: In step S1, The number of distributed micro-grid power station systems based on methanol fuel is determined according to the maximum power required by the project, so that the total output power of the distributed micro-grid power station systems based on methanol fuel is greater than the maximum power required by the project; In the installation process, the box body is hoisted to the installation position by hoisting equipment, the support elevators are extended to the maximum length, the telescopic rods are extended outward, the folding motor is started to make the secondary telescopic horizontal guide rails face away from the box body, the two moving drive frames are started to lengthen the telescopic frames, the inclination sensor collects the inclination of the box body, the telescopic amount of each of the four support elevators is controlled according to the inclination data, the lifting drive motor driving the upper moving rack is started to make the telescopic protection rods at the upper end of the telescopic frame extend synchronously, the minimum value of the telescopic amount of the four support elevators is calculated, which is the moving amount of the lower moving rack, the lifting drive motor driving the lower moving rack is started to make the telescopic protection rods at the lower end of the telescopic frame extend synchronously, the data of the water level sensor at the bottom of the box body is collected in real time, and the four support elevators follow the water level data changes.

7. The power output optimization method of claim 6, wherein: In step S3, wherein, is the working power of the first methanol power generation unit, is the optimal working power of the first methanol power generation unit, is the working power fluctuation percentage coefficient of the first methanol power generation unit, is the set working power fluctuation percentage coefficient of the first methanol power generation unit. When the intermittent load is in intermittent shutdown or the intermittent load is in the trough, the methanol generator set and the photovoltaic supplementary power generation device supply power to the intermittent load while charging the battery energy storage unit; ； ； wherein, P is the required power for intermittent loads, P is the charging power for battery energy storage units, P is the output power of photovoltaic complementary power generation devices, P is the number of methanol power generation units; P is the battery energy storage unit power, P is the maximum battery energy storage unit power, P is the conversion coefficient of photovoltaic modules converted to battery energy storage. When reached and the intermittent load is in the persistent load trough, M methanol generator sets are closed, and the intermittent load is powered by the battery energy storage set, the remaining methanol generator sets, and the photovoltaic supplementary power generation device. ； ； wherein, is the battery energy storage unit protection percentage coefficient, is the battery energy storage unit output power.

8. The power output optimization method of claim 7, wherein: In the output process of the distributed micro-grid power station system based on methanol fuel, the data of the third temperature sensor is collected in real time, when the operating temperature of the generator collected by the third temperature sensor is higher than the first generator set temperature, the heat dissipation box door of the corresponding generator is opened, and the heat dissipation fan of the generator is started, when the operating temperature of the generator continues to rise to the second generator set temperature, the generator stops running.

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