CN114598239B

CN114598239B - Small wind-solar hybrid power supply device for polar field observation

Info

Publication number: CN114598239B
Application number: CN202210338394.6A
Authority: CN
Inventors: 王兵振; 孙雅哲; 程绪宇; 张原飞; 秦利; 刘政
Original assignee: National Ocean Technology Center
Current assignee: National Ocean Technology Center
Priority date: 2022-04-01
Filing date: 2022-04-01
Publication date: 2024-11-15
Anticipated expiration: 2042-04-01
Also published as: CN114598239A

Abstract

The invention provides a small wind-solar complementary power supply device for outdoor observation in a polar region, which comprises a box body unit, a photovoltaic power generation unit, a wind power generation unit, a temperature control unit, a power conversion unit and a monitoring unit, wherein the power conversion unit and the monitoring unit are arranged in the box body unit, the monitoring unit is used for data acquisition and communication, the wind power generation unit is arranged at the top, the temperature control unit is arranged on the side wall of the box body unit, the temperature control unit is used for controlling the temperature in the box body unit, the photovoltaic power generation unit is arranged outside the box body unit, the photovoltaic power generation unit, the wind power generation unit and the monitoring unit are respectively connected to the power conversion unit in a circuit mode, and the power conversion unit is used for power conversion and power supply. The small wind-solar complementary power supply device for the outdoor observation in the polar region greatly reduces wind load born by the container body and reduces the cold-brittleness-resistant requirement of container body materials; meanwhile, the defect of low temperature resistance of the traditional small wind-solar complementary power generation device based on the container is overcome.

Description

Small wind-solar complementary power supply device for field observation in polar region

Technical Field

The invention belongs to the technical field of power supply of field observation systems in Antarctic scientific research, and particularly relates to a highly integrated wind-solar complementary power supply device based on long-period unattended observation application of a small low-power consumption observation instrument.

Background

The Antarctic region is one of cold sources of the earth climate change, and has important influence on the global climate change. By studying the change of the polar environment, the change of the global environment and the influence of the global environment on human beings can be more comprehensively mastered. The south pole region is wide, the topography and the climate environment are extremely complex and various, and a certain number of outdoor long-term observation sites are required to be established and maintained so as to acquire rich research data, thereby deeply understanding the south pole climate characteristics and the influence thereof on the global climate. The south pole region is always under the conditions of high and cold and strong wind, the annual average temperature of each coastal region is mostly about-9.8 ℃, the lowest temperature can reach-40 ℃, and the maximum wind speed can reach 50m/s; the annual average temperature of inland Taishan mountain station area is-36 ℃, and the lowest temperature can reach-64 ℃. The severe natural environment and the fragile ecological system provide severe requirements for the power supply problem of the long-period field independent observation system in the Antarctic region, and the power supply device is required to meet the technical requirements in the aspects of power supply capacity, extremely cold resistance, environmental protection, high reliability, convenience in construction and the like.

In terms of power supply capability, the antarctic field observation independent power supply device needs to ensure the energy consumption requirements of an observation instrument and an own power load, wherein the power consumption of field observation instrument equipment such as a small weather station is about below hundred watts, and the power consumption of an own temperature control heating, state detection and control circuit is controlled to be about 1 kW. For the environment condition of the south pole and the extremely cold, the power supply device needs to meet the low temperature resistance requirement in terms of a mechanical structure and an electric control system 2: for key mechanical parts exposed in a field environment and stressed greatly, low-temperature resistant materials are required to be adopted, so that the requirements of strength and low-temperature toughness are met; for electronic devices of an electric control system, the cost of the devices resistant to the temperature below-20 ℃ is high, the types are incomplete, and the most feasible technical scheme is to arrange a temperature control chamber and place the electric control system in the chamber with controllable environmental temperature. The environment with the south pole is extremely sensitive and fragile in the aspect of green and environment protection, and has higher requirements on the aspects of harmful substance emission, geotechnical construction and the like of a power supply device, on one hand, the locally abundant wind energy and solar energy resources are fully utilized, and on the other hand, the engineering construction such as larger earthwork excavation, cement pouring and the like is reduced as much as possible. The field observation system is often arranged in a region far away from a scientific investigation station, road traffic is inconvenient, construction equipment types are fewer, and the natural conditions of low temperature and high wind weather are frequent, so that a plurality of inconveniences are brought to construction, and equipment maintenance is very difficult; in addition, the wind wave of the west wind band is very large in the marine transportation process, and the equipment jolts severely; these factors put forward the requirements of high integration, convenient assembly and unfolding fixation and high reliability for the power supply device of the small field observation system.

The existing south pole scientific investigation unmanned independent power supply device mainly aims at the power supply problem of a summer scientific investigation station observation system, and comprises a south pole dome astronomical observation system independent power supply device, a Taishan station unmanned power supply device and the like. The antarctic dome astronomical observation system adopts a 15kW diesel/photovoltaic power supply device, and an unmanned power supply system of a Taishan mountain station consists of 210 kW fans, tens of kilowatt photovoltaic modules, a diesel generator and an electric control system. The power supply devices are large in scale, the number of wind and light power generation units is large, the high integration of the whole power generation system cannot be realized, and the power supply devices are not suitable for application scenes of field small-sized long-period observation.

The south pole region belongs to high latitude region, is in high and cold and strong wind state throughout the year, and special geographical position and environment have put forward higher requirement to small-size independent power supply unit, and current container formula small-size scene power supply unit can't be applicable to the long cycle observation application scenario in the south pole field, mainly have following problem:

(1) The mechanical structure of the existing container type small wind-solar power supply device is not suitable for the antarctic low-temperature environment. The mechanical parts in the prior device are made of common carbon steel, and the common steel has the problem of cold-brittle transition under the environment of lower than-20 ℃ and is easy to damage when being stressed greatly. Due to cost reasons, the container often cannot use low-temperature-resistant steel, and the existing small wind-solar power supply device directly fixes the photovoltaic module and the wind turbine on the container body, so that the container body bears larger acting force and cannot adapt to the Antarctic and extremely-cold environment.

(2) The existing container type small wind-solar power supply device heat insulation wall is difficult to meet the marine requirement. For the field observation power supply device for the south pole, the container body is required to be transported to the south pole in a marine mode, and the ship can bear very large wind waves in the process of crossing the Western wind belt, so that the container body can be severely jolt, and the side wall of the conventional heat preservation container can not bear large acting force caused by shaking of the electric control cabinet.

(3) The environment working temperature of the electric components is usually-20 ℃, the heat preservation layer of the existing heat preservation container is thinner, the temperature in the container body can be maintained in a reasonable range only by heating power far exceeding 1kW under the environment condition of extremely low temperature of south poles, and the volume of a power generation unit can be increased due to the requirement of overlarge power generation, so that the aims of miniaturization and high structural integration cannot be achieved.

(4) Photovoltaic modules are commonly paved at the top of a container in the existing device, and snow coverage problem exists in application in the Antarctic region. If a mode of a larger vault is adopted for avoiding snow coverage, the height of the fan is necessarily greatly increased, the height size and the weight of the device are increased, larger wind load is caused, and the difficulty of installation and fixation is increased. In addition, the photovoltaic module is laid at the top greatly influences the operation of staff at the box top, causes very big difficulty to the inspection maintenance of fan.

(5) In the existing device, a strategy that a single-row photovoltaic module is paved along 4 side walls of a box body is generally adopted, and the problem of low utilization rate exists. The box body has shielding effect on sunlight irradiation, the illumination intensity difference of the photovoltaic modules on different sides is overlarge, and the series-parallel combination of the photovoltaic modules can cause a larger efficiency short-plate effect, so that the working efficiency of the whole photovoltaic system is seriously reduced.

(6) The control system in the existing container type small wind-solar power supply device has no redundant design, is low in reliability and poor in viability, and is difficult to adapt to scenes of unmanned on duty working in the south pole field in a long period.

In summary, the existing container type small wind-solar complementary power generation device has certain defects in the aspects of low temperature resistance structure, photovoltaic integration mode, reliability design, sea handling and the like, and can not meet the requirements of field long-period observation application in the Antarctic region.

Disclosure of Invention

In view of the above, the invention aims to provide a small wind-solar complementary power supply device for field observation in an area, so as to solve the problems of low temperature resistance, high reliability, convenience in transportation and arrangement and the like of the power supply device.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

The utility model provides a small-size scene complementary power supply unit of regional field observation, including box unit, photovoltaic power generation unit, wind power generation unit, control by temperature change unit, power conversion unit, monitor cell, box unit internally mounted power conversion unit and monitor cell, monitor cell is used for data acquisition and communication, top installation wind power generation unit, install control by temperature change unit on the lateral wall of box unit, control by temperature change unit is used for controlling the inside temperature of box unit, the externally mounted photovoltaic power generation unit of box unit, photovoltaic power generation unit, wind power generation unit and monitor cell are the line connection to power conversion unit respectively, power conversion unit is used for power conversion and power supply.

Further, the box unit includes container, door-shaped mechanical switching structure, inner wall skeleton and insulation material, and the container is power supply unit's main part, and the outer wall has set up door-shaped mechanical switching structure for connect and fix photovoltaic support, fan, rear portion support frame, the inner wall skeleton sets up all the surface of container for fix insulation material at the container inner wall.

Further, the door-shaped mechanical switching structure comprises 8 stand columns and 4 top connecting beams, wherein the 8 stand columns are respectively arranged on the front side and the rear side of the container, the 4 top connecting beams are arranged on the top of the container, top bosses are welded on the tops of the stand columns, and the top bosses are supported on the top surface of the container; the clamping plates are welded at the bottoms of the stand columns and clamped in clamping grooves at the bottoms of the containers, the clamping plates of the stand columns are fixed in the clamping grooves at the bottoms of the containers by bolts, and the corresponding stand columns on the front side wall and the rear side wall are connected and fixed together by the top connecting beam through the flange bolt structure to form a 1-door-shaped mechanical switching structure.

Further, the photovoltaic power generation unit comprises a photovoltaic support, a photovoltaic assembly and a photovoltaic controller, wherein the photovoltaic support comprises 4 upper layer vertical beams and 4 lower layer vertical beams, the upper layer vertical beams of the photovoltaic support 5 are connected with the upright posts through upright post pin shafts at the top ends, the upper layer vertical beams are connected with the first ends of the lower layer vertical beams through upright beam pin shafts at the bottom ends, and the second ends of the lower layer vertical beams are connected with the bottom beams through another upright beam pin shafts; one end of the bottom beam is hinged with the bottom of the upright post through an upright post pin shaft, and the upper layer vertical beam, the lower layer vertical beam, the bottom beam and the upright post form a four-bar frame mechanism; 4 parallel four-bar frame mechanisms are connected together through 4 lower-row C-shaped cross beams and 4 upper-row C-shaped cross beams, so that an integral photovoltaic bracket basic structure is formed; the photovoltaic controllers are respectively connected to the series branch of the photovoltaic module and the direct current convergence cabinet of the power conversion unit in a circuit manner; the photovoltaic module comprises a lower row of photovoltaic modules and an upper row of photovoltaic modules, wherein the lower row of photovoltaic modules and the upper row of photovoltaic modules are fixed on a lower row of C-shaped cross beams and an upper row of C-shaped cross beams of the photovoltaic bracket through side pressing blocks and middle pressing blocks.

Furthermore, the diagonal draw bar is fixed with the upper layer vertical beam at the top end through a triangular connecting piece, and the diagonal draw bar is fixed with the bottom beam at the bottom end through bolts and 2 small side plates.

Further, after the diagonal draw bars and the bottom beams in the photovoltaic bracket are removed, the upright post, the upper vertical beam, the lower C-shaped cross beam and the upper C-shaped cross beam form a mechanism with 2 rotational degrees of freedom, 4 lower vertical beams, 4 lower C-shaped cross beams and the lower photovoltaic assembly form an outer assembly rigid body which is fixedly connected together, and the outer assembly rigid body can freely rotate around a connecting pin shaft between the upper vertical beam and the lower vertical beam; the 4 upper vertical beams, the 4 upper C-shaped cross beams and the upper photovoltaic modules form an inner module rigid body which is fixedly connected together, and the inner module rigid body can freely rotate around a pin shaft at the top of the upright post. The position of the hinged pivot of the outer assembly rigid body is far higher than the surface of the photovoltaic assembly in the inner assembly rigid body, and the inner assembly rigid body and the outer assembly rigid body can be folded on the side surface of the container body through rotating around the hinged pivot of the inner assembly rigid body and the outer assembly rigid body, so that the function of integrally folding the photovoltaic power generation device is realized.

Further, the wind power generation unit comprises 3 wind power generators, 3 wind power generator controllers and a fan fixing frame, wherein the wind power generators are fixed on the connecting beam at the top of the box body through the fan fixing frame and are positioned on the front-rear symmetrical surface of the container; each wind driven generator is connected with 1 fan controller through a cable.

Further, the power conversion unit comprises a direct current convergence cabinet, an energy storage battery pack and a power conversion unit; the direct current conflux cabinet is direct current bus and control circuit, and the output of fan controller in photovoltaic power generation unit, the wind power generation unit, power conversion unit input is connected with the direct current bus of direct current conflux case through the cable, energy storage battery group is connected with the charge and discharge protection unit in the direct current conflux cabinet.

Further, the monitoring unit comprises an industrial personal computer, a data acquisition unit and a communication unit, wherein current and voltage signals of a photovoltaic controller of the photovoltaic power generation unit, a fan controller of the wind power generation unit, an energy storage battery pack and a power conversion unit are transmitted to the industrial personal computer through the data acquisition unit, an output signal of an internal temperature sensor of the container is transmitted to the industrial personal computer through the data acquisition unit, the industrial personal computer processes and stores data output by the data acquisition unit, and the industrial personal computer is connected with the communication module and transmits the monitored data back to the processing terminal through the communication module.

Further, the temperature control unit comprises 3 temperature sensors and 2 heaters, the heaters can set heating temperatures, and when the temperature inside the container is lower than a set value, heating is automatically started, so that the temperature inside the container is ensured not to be lower than 0 ℃, and the temperature sensors are used for monitoring the temperature inside the container.

Compared with the prior art, the small wind-solar complementary power supply device for field observation in the polar region has the following advantages:

(1) According to the small wind-solar complementary power supply device for the polar region field observation, the door-shaped mechanical switching frame made of low-temperature materials is arranged on the outer wall of the container so as to be connected with the fan and the photovoltaic power generation device, the frame is supported by the container, and the frame is fixed with the front and rear ground anchors of the container body through the photovoltaic support and the rear support, so that wind load borne by the container body is greatly reduced, and the cold-embrittlement-resistant requirement of the container body material is reduced; in the aspect of the electric system for preventing extremely cold environment, a fireproof heat-insulating structure and a temperature control system are arranged in the container, so that the working environment temperature of the electric control system is ensured to be in a reasonable range above 0 ℃, and the defect of low temperature resistance of the traditional small wind-solar complementary power generation device based on the container is overcome by 2-aspect low temperature resistant technical measures.

(2) According to the small wind-solar complementary power supply device for the outdoor observation in the polar region, double-row photovoltaic modules are integrated to a single side face of the container, so that the problems of snow accumulation, shielding, series-parallel short-plate effect and the like caused by paving the photovoltaic modules on the top and all side walls of the container in the prior art are avoided, and the utilization rate of the photovoltaic modules is improved; through reasonable setting the connection size of bottom roof beam, adjustable photovoltaic module's inclination to the best acquisition solar energy angle of the outdoor observation point of different latitudes of adaptation has improved photovoltaic power generation's efficiency.

(3) The small wind-solar complementary power supply device for the outdoor observation of the polar region adopts a hinged photovoltaic bracket structure, and can realize the integral folding of the photovoltaic bracket and the photovoltaic assembly by dismantling 2 bottom beams, 2 diagonal draw bars and a rear supporting frame, wherein the thickness of the folded bracket and the folded photovoltaic assembly is only 0.5m, so that the photovoltaic bracket is convenient to transport; 3 small wind driven generators are integrated to the middle position of the top of the container, so that the lifting operation of 4 top holes of the container is not affected; the design of the heat preservation structure is combined, and a firm side wall vertical keel and a bottom structure are arranged to fix the electric control cabinet, so that the safety of offshore and land transportation is ensured; the power supply device can be preassembled at a south pole scientific investigation station to realize integral transition transportation; after reaching the observation point, the photovoltaic bracket can be unfolded and fixed by a small amount of work, and the operation is convenient; the invention fully considers the factors of lack of construction machinery, easiness in operation affected by high wind and low temperature weather, poor transportation conditions and the like in the construction operation process in the Antarctic region, can realize integral transportation, has simpler installation and fixation workload, and is suitable for scenes of construction operation in the Antarctic field environment.

(4) According to the small wind-solar complementary power supply device for the outdoor observation in the polar region, a plurality of parallel operation schemes/groups are adopted by the fan and the photovoltaic power generation system, the control system, the temperature control system and the like are in a double-backup mode and are redundant, the survivability and reliability of the power supply device are improved, the maximum installed power of a photovoltaic power generation unit can reach 4.0kW, the maximum installed power of a wind power generation unit can reach 1.2kW, and the device can be suitable for the long-period observation task in the polar region of small observation equipment.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of an overall structure according to an embodiment of the present invention;

FIG. 2 is a schematic view of a rear support structure according to an embodiment of the present invention;

FIG. 3 is a schematic view of a photovoltaic module according to an embodiment of the present invention;

FIG. 4 is a schematic view of a connection structure between a portal frame pillar and a container body according to an embodiment of the present invention;

FIG. 5 is a schematic view of a column structure of a portal frame according to an embodiment of the present invention;

FIG. 6 is a schematic view of a bottom slot structure of a container according to an embodiment of the present invention;

Fig. 7 is an enlarged view of the portion F in fig. 1;

fig. 8 is a schematic structural diagram of a photovoltaic bracket according to an embodiment of the present invention;

Fig. 9 is an enlarged view of the portion E in fig. 8;

fig. 10 is an enlarged view of a portion D in fig. 8;

FIG. 11 is a schematic view of a connection structure between a fan and a container column frame according to an embodiment of the present invention;

FIG. 12 is a schematic view of an internal insulation framework structure of a container according to an embodiment of the present invention;

fig. 13 is a schematic view of a heat insulation structure of a vertical sidewall framework in an internal heat insulation framework of a container according to an embodiment of the present invention;

fig. 14 is an enlarged view of the portion B in fig. 12;

Fig. 15 is an enlarged view of the portion C in fig. 12;

FIG. 16 is a schematic view of a connecting and fixing structure of a movable door frame of a container in a heat-preserving frame structure according to an embodiment of the present invention;

FIG. 17 is a schematic view of a thermal insulation structure of a container according to an embodiment of the present invention;

FIG. 18 is a cross-sectional view taken along line A-A of FIG. 17;

FIG. 19 is a B-B cross-sectional view of FIG. 17;

FIG. 20 is a schematic diagram of a topology of an electrical system according to an embodiment of the present invention;

fig. 21 is a schematic diagram of an electrical device layout scheme according to an embodiment of the invention.

Reference numerals illustrate:

1. A container; 2. a blower; 3. a lower row of photovoltaic modules; 4. an upper row of photovoltaic modules; 5. a photovoltaic support; 6. a top connecting beam; 7. a column; 8. a rear support; 9. a boss at the top of the upright post; 10. the bottom of the upright post is welded with a clamping plate; 11. a clamping groove at the bottom of the box body; 12. a column fastening bolt; 13. a side pressing block; 14. an intermediate briquetting; 15. a lower row of C-shaped cross beams; 16. an upper row of C-shaped cross beams; 17. an upper layer vertical beam; 18. the upright post pin shaft; 19. a vertical beam pin shaft; 20. a lower layer vertical beam; 21. a bottom beam; 22. a ground flange; 23. a diagonal draw bar; 24. a triangle connecting piece; 25. a bolt; 26. a small side plate; 27. a pull ring structure; 28. a pin nut; 29. a fan switching base; 30. a fan fixing frame; 31. an auxiliary connection flange; 32. a side wall heat insulation wood block; 33. m8 bolts; 34. a side wall vertical keel; 35. a keel anchor fixing piece; 36. a sidewall longitudinal keel; 37. a side wall polyurethane heat-insulating layer; 38. a side wall glass surface felt heat insulation layer; 39. an end face transverse keel; 40. an L-shaped connector; 41. end face vertical keels; 42. fixing a polyurethane heat-insulating layer with a small end face; 43. fixing a small end face glass surface felt heat-insulating layer; 44. a top transverse keel; 45. a top skeletal support; 46. a top longitudinal keel; 47. a top polyurethane insulation layer; 48. a top glass veil insulation layer; 49. a ground longitudinal keel; 50. a ground transverse keel; 51. longitudinal wood joists of the ground; 52. a ground transverse wood keel; 53. a container wood floor; 54. a bottom polyurethane heat-insulating layer; 55. a bottom glass veil insulation layer; 56. a container movable door; 57. vertical steel keels of the movable door; 58. a movable door transverse steel keel; 59. vertical wood keels of the movable door; 60. a photovoltaic module series branch I; 61 a photovoltaic module series branch II; 62. a photovoltaic module series branch III; 63. a first fan generator; 64. a second fan generator; 65. a fan generator III; 66. a photovoltaic controller; 67. a fan controller I; 68. a fan controller II; 69. a fan controller III; 70. a direct current convergence cabinet; 71. a charge-discharge controller; 72. an energy storage battery pack; 73. a power conversion unit; 74. a direct current power supply conversion module; 75. an inverter; 76. a data acquisition unit; 77. an industrial personal computer; 78. a communication unit; 79. a first temperature measurement point; 80. a second temperature measurement point; 81. a third temperature measurement point; 82. a first heater; 83. a second heater; 84. a bottom channel steel; 85. an electric control cabinet II; 86. an electric control cabinet III; 87. a bottom antiskid plate.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

The small wind-solar complementary power supply device for field observation in the polar region comprises a box body unit, a photovoltaic power generation unit, a wind power generation unit, a temperature control unit, a power conversion unit and a monitoring unit, wherein the box body unit comprises 16m shipping container 1, a door-shaped frame structure, an inner wall framework and a heat insulation material, the 6m shipping container 1 is a main body of the power supply device, and a door-shaped mechanical switching structure is arranged on the outer wall of the 6m shipping container and used for connecting and fixing a photovoltaic bracket 5, a fan 2 and a rear supporting frame 8. The door-shaped mechanical switching structure comprises 8 upright posts 7 and 4 top connecting beams 6, the 8 upright posts 7 are respectively arranged on the front side and the rear side of the container 1, the 4 top connecting beams 6 are arranged on the top of the container 1, the 8 upright posts 7 and the 4 top connecting beams 6 form a door-shaped frame structure with a mechanical switching function, and the door-shaped mechanical switching structure is supported by the container body and is connected with the photovoltaic bracket 5 and the rear supporting frame 8; the photovoltaic bracket 5 and the rear supporting frame 8 are fixed with the ground through a ground anchor flange. The inner wall frameworks are arranged on the upper surface and the lower surface of the 4 inner walls and the inner part of the container 1, and fix 120mm double-layer heat insulation materials on all 6 inner surfaces of the container 1; the surface of the ground heat insulation structure inside the container 1 is paved with an anti-skid steel plate with the thickness of 3mm, and the anti-skid steel plate and the bottom surface framework of the container are fixed together through screws.

In one embodiment, the top of the column 7 is welded with a top boss 9, the top boss 9 being supported on the top surface of the container 1; the clamping plate 10 is welded at the bottom of the upright post 7, the clamping plate 10 is clamped in the clamping groove 11 at the bottom of the container, and the clamping plate 10 of the upright post 7 is fixed in the clamping groove 11 at the bottom of the container by the bolts 12. The top connecting beam 6 is used for connecting and fixing corresponding upright posts 7 on the front side wall and the rear side wall together through a flange bolt structure to form 1 portal frame; 4 portal frames are arranged along the longitudinal direction of the container, the 4 portal frames are fixed with the bottom of the container 1 through 8 clamping grooves 11 at the bottom of the container, and meanwhile, the portal frames depend on the top and side frame surfaces of the container 1, so that the downward and left and right degrees of freedom are further limited, and the portal frames are fixed with the container body of the container 1.

The photovoltaic power generation unit comprises a photovoltaic bracket 5, a photovoltaic module and a photovoltaic controller. The photovoltaic bracket comprises 4 upper layer vertical beams 17, 4 lower layer vertical beams 20, 8C-shaped cross beams 15, 2 bottom beams 21 and 2 diagonal braces 23; the upper layer vertical beam 17, the lower layer vertical beam 20, the bottom beam 21 and the upright post 7 form 4 parallel four-bar structures, and the C-shaped cross beam 15 is used for fixedly connecting the 4 parallel four-bar structures together to form a hinged truss; the photovoltaic module is fixed on the photovoltaic bracket 5, the 2 diagonal draw bars 23 are connected with the bottom beam 21 at the outermost side and the vertical beam 20 at the lower layer, and the bottom beam 21 is fixedly connected with the ground anchor flange structure through 2 anchor flanges.

In this embodiment, the photovoltaic module includes a lower row of photovoltaic modules 3 and an upper row of photovoltaic modules 4, and the lower row of photovoltaic modules 3 and the upper row of photovoltaic modules 4 are fixed on a lower row of C-shaped cross beams 15 and an upper row of C-shaped cross beams 16 of the photovoltaic bracket through an edge press block 13 and an intermediate press block 14. The upper layer vertical beam 17 of the photovoltaic bracket 5 is connected with the upright post 7 through an upright post pin shaft 18 at the top end, the upper layer vertical beam 17 is connected with the lower layer vertical beam 20 through an upright beam pin shaft 19 at the bottom end, and the other end of the lower layer vertical beam is connected with the bottom beam 21 through an upright beam pin shaft 19; the other end of the bottom beam 21 is connected with the bottom of the upright 7 in a hinged manner by means of the upright pin 18. The upper layer vertical beam 17, the lower layer vertical beam 20, the bottom beam 21 and the upright post 7 form a four-bar frame mechanism, and the upright post 7 is a side link; the 4 parallel four-bar frame mechanisms are connected together through the 4 lower-row C-shaped cross beams 15 and the 4 upper-row C-shaped cross beams 16 to form an integral photovoltaic bracket basic structure. In the basic structure of the photovoltaic support, the bottom beam 21 can rotate around the hinge point at the bottom of the upright post, the height position of the front end of the photovoltaic support can be adjusted in a certain range, the requirement on the terrain flatness of the installation site of the power generation device is reduced to a certain extent, and the construction operation is facilitated.

In this embodiment, 2 anchor flanges 22 are disposed on the bottom beam 21, and after the photovoltaic support 5 and the photovoltaic module are unfolded in place, the anchor flanges 22 and the ground anchor flanges can be connected and fixed by bolts, in this case, two adjacent rods (the upright posts 7 and the bottom beam 21) in the four-bar structure of the support are all in a fixed state, and the whole photovoltaic support 5 is firmly fixed on the container 1 and the foundation. On the basis of fixing the foundation flanges 22 of the bottom beams 21, the upper layer vertical beams 17 and the bottom beams 21 are connected together through diagonal braces 23 to form 1 auxiliary supporting line so as to enhance the stability of the photovoltaic bracket, and the photovoltaic bracket is characterized in that the diagonal braces 23 are fixed with the upper layer vertical beams through triangular connectors 24 at the top ends and the diagonal braces 23 are fixed with the bottom beams 21 through bolts 25 and 2 small side plates 26 at the bottom ends. In addition, a pull ring structure 27 is arranged on the diagonal draw bar 23, and the power supply device can be further fixed by utilizing the pull ring structure and the steel wire rope pull rope, so that the survivability of the device in extremely windy weather is enhanced. All pin ends are provided with a retaining nut 28 for limiting axial displacement of the pin.

In the embodiment, after the diagonal rods 23 and the bottom beams 21 in the photovoltaic support 5 are removed, the upright posts 7, the upper vertical beams 17, the lower vertical beams 20, the lower C-shaped beams 15 and the upper C-shaped beams 16 form a mechanism with 2 rotational degrees of freedom, and the 4 lower vertical beams 20, the 4 lower C-shaped beams 15 and the lower photovoltaic modules 3 form an outer module rigid body which is fixedly connected together and can freely rotate around a connecting pin shaft between the upper vertical beams and the lower vertical beams; the 4 upper vertical beams 17, the 4 upper C-shaped cross beams 16 and the upper photovoltaic modules 4 form an inner module rigid body which is fixedly connected together, and the inner module rigid body can freely rotate around a pin shaft 18 at the top of the upright post. The position of the hinged pivot of the outer assembly rigid body is far higher than the surface of the photovoltaic assembly in the inner assembly rigid body, and the inner assembly rigid body and the outer assembly rigid body can be folded on the side surface of the container body through rotating around the hinged pivot of the inner assembly rigid body, so that the function of integrally folding the photovoltaic power generation device is realized, and the integral transportation of the power supply device is facilitated. The diagonal draw bars 23 mainly play an auxiliary fixing role, and after the diagonal draw bars 23 and foundation bolts of the bottom beams 21 are removed, the photovoltaic brackets 5 and the photovoltaic modules can be folded to the side walls of the container so as to be convenient for transportation.

The wind power generation unit comprises 3 wind power generators (a first wind power generator 63, a second wind power generator 64 and a third wind power generator 65), 3 wind power controllers (a first wind power controller 67, a second wind power controller 68 and a third wind power controller 69) and a wind power fixing frame 30, wherein the wind power generators are fixed on the connecting beam 6 at the top of the box body through the wind power fixing frame 30 and are positioned on the front-rear symmetrical plane of the container 1; each wind driven generator is connected with 1 fan controller through a cable. The wind load borne by the fan and the photovoltaic module is transmitted to the bottom beam 21 and the ground anchors of the rear supporting frame 8 through the photovoltaic bracket 5, the upright post 7 and the top connecting beam 6, the door-shaped frames of the photovoltaic bracket 5, the upright post 7 and the top connecting beam 6 and the rear supporting frame 8 are parts which are exposed in the wild and are stressed greatly, and the manufacturing materials of the wind power generation device are low-temperature resistant structural steel; the container 1 body mainly bears the wind pressure load of the container body and part of the weight of the portal frame, so that the stress is small, and the influence of low-temperature brittleness of the container body manufacturing material is reduced.

In this embodiment, the fan 2 is fixed on the fan adaptor base 29, the fan adaptor base 29 is fixed on the fan fixing frame 30 through a flange structure and bolts, the fan fixing frame 30 is a welded H-shaped frame structure, connecting flanges are welded at four corners of the H-shaped frame structure, and the fan fixing frame is fixed with the 2 top connecting beams 6 through the connecting flanges at four corners. For Q-type vertical axis fans of different types, the switching base 29 can be replaced to be connected with the fan fixing frame 30, and the power supply device can be adapted to wind driven generators of different types in a low-cost mode. Four corners of the fan fixing frame 30 are provided with 4 auxiliary connection flanges 31, and the auxiliary connection flanges 31 are used for installing observation instruments or other auxiliary instruments.

In this embodiment, the main external load of the power supply device is wind load. The wind load mainly acts on the photovoltaic module 3, the fan 2 and the box of the container 1. The upright posts 7, the photovoltaic brackets 5, the upright posts 7 and the rear supporting frames 8 form 2 auxiliary supporting structures in front and behind the container body, and on one hand, the container body is reinforced; on the other hand, the 2 support structures are connected and fixed together by the top connecting beams 6, and wind force can be effectively transferred between the 2 support structures. External force of wind on fan, photovoltaic module is born by 8 rag flanges of support and rear portion support frame mainly, and the wind load of box self also is born by auxiliary support structure to reduce the atress of container box greatly, effectively alleviateed the harm of box steel low temperature friability problem.

The heat insulation material is paved in 2 layers to meet the double requirements of heat insulation and fire prevention; the heat insulation material contacted with the inner wall of the container 1 is polyurethane heat insulation material with the total thickness not less than 100mm, the heat insulation material with the A1 fireproof grade with the thickness of 20mm is arranged on the outer surface of the polyurethane heat insulation layer, and the inner decorative plate with the A1 fireproof grade is arranged on the surface of the polyurethane heat insulation layer. In this embodiment, the thermal insulation structure of the box body is composed of a thermal insulation framework and a thermal insulation material 2. The metal components in the heat-insulating framework are connected with the metal frame of the box body in a heat-insulating way through the heat-insulating wood blocks and the bolts. The side wall heat-insulating wood block 32 is fixed on a rectangular pipe at the top of the inner side of the frame of the container 1 through 2M 8 bolts 33, the side wall vertical keels 34 are made of rectangular steel pipes with the thickness of 80 multiplied by 60 multiplied by 2.0mm, and the top of the side wall vertical keels 34 are fixed on the heat-insulating wood block 32 through bolts; the side wall vertical keels 34 are not in direct contact with the metal side walls of the container 1 at the top through the heat-insulating fixed wooden block 32, so that heat insulation is realized; the vertical keels 34 of the side walls are directly fixed with the wooden floor of the ground inside the container 1 at the bottom through keel anchor fixing pieces 35, and heat insulation is realized between the bottom and the container 1. The sidewall longitudinal runners 36 are directly secured to the sidewall vertical runners 34 by bolts; two layers of heat insulation materials are filled between the 6 side wall vertical keels 34, the bottom layer is 100mm polyurethane heat insulation material 37, the surface layer is 20mm glass surface felt heat insulation material 38, and then the heat insulation materials 37 and 38 are pressed on the side walls of the container by the 6 side wall vertical keels 36.

In this embodiment, the end face transverse keels 39 are fixed to the end faces of the side wall longitudinal keels 36 by L-shaped connectors 40, and the end face vertical keels 41 are fixed to the end face transverse keels 39 by bolts. The flat steel frame consisting of 5 end face transverse keels 39 and 3 end face vertical keels 41 compresses two layers of heat insulation materials on the fixed small end face of the container, wherein the inner layer is 100mm polyurethane heat insulation material 42, and the surface layer is 20mm glass surface felt heat insulation material 43. The top transverse keels 44 are secured to the side wall vertical keels 34 by top frame supports 45, and the top longitudinal keels 46 are snapped into the grooves of the top transverse keels 44; the 2 fixing holes on the top framework support piece are long holes, and the positions of the top keels 44 and 46 can be adjusted up and down; a top frame structure is formed by 5 top longitudinal keels 46 and 6 top transverse keels 44, and two layers of heat insulation materials are pressed on the top of the container by the top frame structure, wherein the inner layer is 100mm polyurethane heat insulation material 47, and the surface layer is 20mm glass surface felt heat insulation material 48.

In this embodiment, the bottom surface insulation framework structure of the container is composed of a ground longitudinal keel 49, a ground transverse keel 50, a ground longitudinal wooden keel 51, a ground transverse wooden keel 52 and the like, and the ground longitudinal wooden keel 51 and the ground transverse wooden keel 52 are fixed on a bottom surface wooden floor 53 of the container through screws; the longitudinal ground keel 49 and the transverse ground keel 50 are made of rectangular metal pipes with the thickness of 80 multiplied by 60 multiplied by 2.5mm, and are respectively fixed on the wood ground keels 51 and 52 through screws, and are not in direct contact with the metal structure of the container body, so that heat insulation is realized. Two layers of heat insulation materials are filled in a rectangular gap formed by the bottom heat insulation framework, the bottom layer is 100mm polyurethane heat insulation material 54, and the surface layer is 20mm glass surface felt heat insulation material 55. The heat-insulating framework structure of the container movable door 56 is composed of a movable door vertical steel keel 57, a movable door transverse steel keel 58 and a movable door vertical wood keel 59, wherein the movable door vertical wood keel 59 is fixed on the container movable door 56 through a self-tapping screw, and the movable door vertical steel keel 57 is fixed on the movable door vertical wood keel 59 through a wood screw; two layers of heat insulation materials are filled between the left and right movable door vertical steel keels 57, the bottom layer is 100mm polyurethane heat insulation materials, and the surface layer is 20mm glass surface felt heat insulation materials; the 5 movable door transverse steel keels 58 are fixed to the movable door vertical steel keels 57 by screws, and simultaneously two layers of heat insulation materials are pressed on the movable door of the container.

The power conversion unit comprises a direct current bus cabinet 70, an energy storage battery pack 72 and a power conversion unit 73; the direct current convergence cabinet 70 is a direct current bus and a control circuit, the output ends of the photovoltaic controller, the fan controller and the input ends of the power conversion unit are connected with the direct current bus of the direct current convergence cabinet through cables, and the energy storage battery pack is connected with the charge and discharge protection unit in the direct current convergence cabinet 70. The monitoring unit comprises an industrial personal computer 77, a data acquisition unit and a communication unit, wherein current and voltage signals of the photovoltaic controller, the fan controller, the energy storage battery pack and the power conversion unit are transmitted to the industrial personal computer through the data acquisition unit, an output signal of the temperature sensor in the container 1 is transmitted to the industrial personal computer through the data acquisition unit, the industrial personal computer 77 processes and stores data output by the data acquisition unit, and the industrial personal computer is connected with the communication module and sends monitoring data back to the processing terminal through the communication module.

The power conversion unit and the monitoring unit are integrated in 3 control cabinets, and the 3 control cabinets are placed in the heat preservation container to ensure that the electric control system is in a controllable temperature environment; the 3 control cabinets are fixed with the anti-skid steel plates at the bottom of the container and the vertical frameworks on the side wall, and are placed on the sea and on the land to cause equipment damage due to jolt in the transportation process. The single piece rated power of the photovoltaic module is 400W, the photovoltaic bracket 5 can integrate 10 photovoltaic modules at most, and the photovoltaic modules are connected with a photovoltaic controller through connecting wires; the wind driven generator adopts a 400W vertical axis fan to ensure the survivability under the condition of extreme high wind in south poles; the maximum power generation power of the power supply device during the polar day can reach 5kW, and the maximum power generation power during polar night can reach 1.2kW. The power conversion unit comprises a direct current power conversion module 74 and an alternating current inverter, and can provide direct current DC48V, DC, 24, V, DC, 220, and other power sources for an observation instrument or a control system.

In this embodiment, the electrical structure of the power supply device is shown in fig. 20. For the photovoltaic module, different forms of serial and parallel group combination can be carried out according to the needs, and preferably, the technical form of 3 branches is selected in the embodiment; the first photovoltaic module serial branch 60 is formed by connecting 3 photovoltaic modules in series, the second serial branch 61 and the third serial branch 62 are also serial combinations of 3 photovoltaic modules, and the three photovoltaic module serial branches are commonly connected into the photovoltaic controller 66; the photovoltaic controller 66 performs buck conversion on the three photovoltaic module series branches, and performs MPPT regulation and control to make the photovoltaic module work in an optimal state. A first wind power generator 63, a second wind power generator 64 and a third wind power generator 65) of the fan are respectively provided with 1 fan controller which is respectively (a first fan controller 67, a second fan controller 68 and a third fan controller 69); the fan controller converts alternating current output by the fan into direct current, and converts voltage through the chopper circuit. The direct current bus cabinet 70 is electric power bus equipment based on direct current bus technology, is a common contact of a direct current output end of a power generation unit, an energy storage battery and a direct current input end of an inverter power supply, forms stable bus voltage through the energy storage battery, is provided with a multi-stage unloading load, and protects a storage battery according to the change condition of the bus voltage; preferably, the bus voltage of the direct current bus bar 70 is set to 48V. The direct currents output by the photovoltaic controller 66, the fan controller one 67, the fan controller two 68 and the fan controller three 69 are directly input to the direct current bus of the direct current convergence cabinet 70, and the energy storage battery pack 72 is connected to the direct current bus through the charge and discharge controller 71 in the direct current convergence cabinet. Preferably, the energy storage battery is a lead-carbon battery with the capacity of 600AH, and the lead-carbon battery is a capacitive lead-acid battery, is a technology evolved from the traditional lead-acid battery, and has the advantages of quick charge, high discharge power, high cycle life, high cost performance and the like. The dc bus provides input power to a dc power conversion module 74 and an inverter 75 in the power conversion unit 73, and the dc power conversion module 74 converts dc power output from the dc bus into three dc voltages: DC48V, DC24V, DC V to adapt to the input voltage requirements of different observers; the inverter 75 converts the direct current output by the direct current bus into 50Hz AC220V alternating current, and provides alternating current power for the temperature control system heater and the power supply device. The photovoltaic controller, the fan controller and the direct current convergence cabinet are all provided with voltage and current sensors, electric power parameters acquired by the sensors are input to the industrial personal computer 77 through the data acquisition unit 76, the industrial personal computer 77 detects the working state of the power supply device in real time, data are stored, and the data are sent to the base through the communication unit 77 on time.

In the embodiment, the 3 paths of the series connection of the photovoltaic modules and the 3 wind generating sets are 6 generating units which work independently and are redundant, and if one path fails, other generating units can still work normally; the temperature inside the container is ensured to be in a reasonable range, which is a key condition for the normal operation of the electrical system, and a temperature control unit is arranged for improving the reliability of the temperature control system, wherein the temperature control unit comprises 3 temperature sensors and 2 heaters (a first heater 82 and a second heater 84) which are redundant; the automatic heater can set heating temperature, and when the temperature inside the container is lower than a set value, heating is automatically started to ensure that the temperature inside the container is not lower than 0 ℃, and the temperature sensor is used for monitoring the temperature inside the container. And redundant backups are arranged on key equipment such as a data acquisition unit, an industrial personal computer, a communication unit and the like so as to improve the reliability of the system in a severe environment.

In this embodiment, the layout of the electrical system inside the container 1 is shown in fig. 21. 3 temperature sensor measuring points (a first temperature measuring point 79, a second temperature measuring point 80 and a third temperature measuring point 81) are arranged in the container 1, the temperature measuring points are positioned on the side wall vertical keels 34 of the heat preservation framework in the container, the height from the ground is 1.5m, the temperature measuring points are symmetrically distributed along the length direction of the container, and the distance between the measuring points is 1.5m; the first heater 82 and the second heater 84 are disposed below the temperature measurement point and near the inner wall of the container. In order to save the internal space, the photovoltaic controller 66, the first fan controller 67, the second fan controller 68, the third fan controller 69 and the power conversion unit are integrated into the second electric control cabinet 85, and the data acquisition unit 76, the industrial personal computer 77 and the communication unit 78 are all integrated into the third electric control cabinet 86; the direct current convergence cabinet 70, the second electric control cabinet 85, the third electric control cabinet 86, the energy storage battery pack 72 and other components are fixed on an anti-skid steel plate 87 at the inner bottom surface of the container through two 10# channel steels 84. The small wind-solar complementary power supply device is an integrated power supply device in an extremely cold environment, and can achieve the aim of reliably supplying power for a long time in an extremely cold and strong wind environment by the technical schemes of low temperature resistant design of the structure, single-side double-row photovoltaic layout, temperature control system arrangement, multiple redundancy arrangement of key components and the like, and provides energy and a supporting platform for long-period outdoor long-period observation activities in a polar region based on a small observation instrument.

The foregoing description of the preferred embodiments of the present invention is not intended to limit the embodiments of the present invention, but is intended to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the embodiments of the present invention.

Claims

1. A small-scale wind-solar complementary power supply device for field observation in polar regions, characterized in that it comprises a box unit, a photovoltaic power generation unit, a wind power generation unit, a temperature control unit, a power conversion unit, and a monitoring unit. The power conversion unit and the monitoring unit are installed inside the box unit, and the monitoring unit is used for data collection and communication. The wind power generation unit is installed on the top, and the temperature control unit is installed on the side wall of the box unit. The temperature control unit is used to control the temperature inside the box unit. The photovoltaic power generation unit is installed outside the box unit. The photovoltaic power generation unit, the wind power generation unit, and the monitoring unit are respectively connected to the power conversion unit by lines, and the power conversion unit is used for power conversion and power supply;

The box unit includes a container, a door-shaped mechanical transfer structure, an inner wall frame and a thermal insulation material. The container is the main body of the power supply device. The outer wall is provided with a door-shaped mechanical transfer structure for connecting and fixing the photovoltaic bracket, the fan and the rear support frame. The inner wall frame is provided on all surfaces of the container for fixing the thermal insulation material on the inner wall of the container; the door-shaped mechanical transfer structure includes 8 columns and 4 top connecting beams. The 8 columns are respectively provided on the front and rear sides of the container, and the 4 top connecting beams are provided on the top of the container. The top boss is welded to the top of the column, and the top boss is supported on the top surface of the container; a card plate is welded to the bottom of the column, and the card plate is clamped in the card slot at the bottom of the container. Bolts fix the card plate of the column to the card slot at the bottom of the container The top connecting beam connects and fixes the corresponding columns on the front and rear side walls together through a flange bolt structure to form a door-shaped mechanical transfer structure; the photovoltaic power generation unit includes a photovoltaic bracket, a photovoltaic module, and a photovoltaic controller. The photovoltaic bracket includes 4 upper vertical beams and 4 lower vertical beams. The upper vertical beam of the photovoltaic bracket is connected to the column at the top through a column pin shaft, and the upper vertical beam is connected to the first end of the lower vertical beam at the bottom through a vertical beam pin shaft, and the second end of the lower vertical beam is connected to the bottom beam through another vertical beam pin shaft; one end of the bottom beam is hinged to the bottom of the column through the column pin shaft, and the upper vertical beam, the lower vertical beam, the bottom beam and the column form a four-link frame mechanism, and the column is a connecting rod; The four parallel four-link frame mechanisms are connected together through four lower-row C-shaped beams and four upper-row C-shaped beams to form the basic structure of the overall photovoltaic support; the photovoltaic controller is respectively connected to the series branches of the photovoltaic components and the DC combiner of the power conversion unit; the photovoltaic components include lower-row photovoltaic components and upper-row photovoltaic components, and the lower-row photovoltaic components and the upper-row photovoltaic components are fixed to the lower-row C-shaped beams and the upper-row C-shaped beams of the photovoltaic support through edge blocks and middle blocks; the diagonal rod is fixed to the upper vertical beam at the top through a triangular connector, and the diagonal rod is fixed to the bottom beam at the bottom with bolts and two small side plates; after removing the diagonal rod and the bottom beam in the photovoltaic support, the column, the upper vertical beam, the lower vertical beam, the lower C-shaped beam, the lower vertical beam, the lower C-shaped beam and the lower C-shaped beam are connected to the photovoltaic support. The upper row of C-shaped beams and the upper row of photovoltaic modules form a mechanism with two rotational degrees of freedom. The four lower vertical beams, the four lower row of C-shaped beams and the lower row of photovoltaic modules form an outer module rigid body that is consolidated together, and the outer module rigid body can rotate freely around the connecting pins between the upper and lower vertical beams; the four upper vertical beams, the four upper row of C-shaped beams and the upper row of photovoltaic modules form an inner module rigid body that is consolidated together, and the inner module rigid body can rotate freely around the pins at the top of the columns. The hinge fulcrum position of the outer module rigid body is much higher than the surface of the photovoltaic module in the inner module rigid body. Through the rotational movement around its own hinge fulcrum, the inner and outer module rigid bodies can be folded on the side of the container body, thereby realizing the function of folding the photovoltaic power generation device as a whole.

2. According to the small-scale wind-solar complementary power supply device for polar field observations as described in claim 1, it is characterized in that: the wind power generation unit includes 3 wind turbines, 3 wind turbine controllers, and a wind turbine fixing frame; the wind turbine is fixed to the top connecting beam of the box body through the wind turbine fixing frame, and is located on the front and rear symmetrical planes of the container; each wind turbine is connected to a wind turbine controller through a cable.

3. According to the small-scale wind-solar complementary power supply device for polar field observations in claim 1, it is characterized in that: the power conversion unit includes a DC combiner cabinet, an energy storage battery group, and a power conversion unit; the DC combiner cabinet is a DC bus and a control circuit, the photovoltaic controller of the photovoltaic power generation unit, the output end of the wind turbine controller in the wind power generation unit, and the input end of the power conversion unit are connected to the DC bus of the DC combiner box through cables, and the energy storage battery group is connected to the charge and discharge protection unit in the DC combiner cabinet.

4. The small-scale wind-solar complementary power supply device for polar field observation according to claim 3 is characterized in that: the monitoring unit includes an industrial computer, a data acquisition unit, and a communication unit; the photovoltaic controller of the photovoltaic power generation unit, the fan controller of the wind power generation unit, and the energy storage battery pack are all connected to the industrial computer through the data acquisition unit; the current and voltage signals of the power conversion unit are transmitted to the industrial computer through the data acquisition unit; the output signal of the temperature sensor inside the container is transmitted to the industrial computer through the data acquisition unit; the industrial computer processes and stores the data output by the data acquisition unit; the industrial computer is connected to the communication unit and sends the monitoring data back to the processing terminal through the communication unit.

5. According to the small wind-solar complementary power supply device for polar field observations as described in claim 1, it is characterized in that the temperature control unit includes 3 temperature sensors and 2 heaters. The heaters can set the heating temperature. When the temperature inside the container is lower than the set value, the heating is automatically started to ensure that the temperature inside the container is not lower than 0°C. The temperature sensor is used to monitor the temperature inside the box.