Overhead line type photovoltaic power generation system

Abstract

The invention provides an overhead line type photovoltaic power generation system, and relates to the technical field of photovoltaic power generation, the overhead line type photovoltaic power generation system comprises a controller, the controller is electrically connected with a solar array assembly, the controller is electrically connected with an energy storage assembly and an inverter, and the inverter is electrically connected with an overhead line assembly; the system also comprises a photovoltaic abnormity tracking assembly which is used for tracking the solar panel with abnormal function of the solar array assembly. The technical problems that three-phase power needs to be subjected to current and voltage stabilization after an overhead line type photovoltaic power generation system is connected with a power grid, and cables are in contact with the ground when the photovoltaic power generation system is connected with the power grid are solved.

Description

Technical Field

[0001] The invention belongs to the field of photovoltaic power generation, and in particular relates to an overhead line type photovoltaic power generation system. Background Art

[0002] Photovoltaic power generation system is a power generation system that uses solar cells to directly convert solar energy into electrical energy. Photovoltaic power generation system mainly consists of the following parts: solar panels, inverters, controllers and other auxiliary equipment. Photovoltaic power generation system has a wide range of applications, including home, industry, agriculture, transportation, communications and other fields;

[0003] In the existing large-scale photovoltaic power generation systems, the photovoltaic power generation system is directly connected to the power grid. However, the direct transmission of the electricity generated by photovoltaic power generation to the power grid will cause instability of the three electric powers due to the fluctuation of the power generation power, and cannot be directly used in life and production. The three electric powers need to be stabilized, and the stabilization of the three electric powers requires additional energy consumption. In addition, during the grid-connected process of the photovoltaic power generation system, the cables connected to the power grid are often dragged on the ground, which poses a great safety hazard in life and production. Summary of the invention

[0004] The present invention provides an overhead line photovoltaic power generation system to solve at least one technical problem raised in the above background technology.

[0005] To solve the above technical problems, the present invention discloses an overhead line photovoltaic power generation system, comprising: a controller, the controller is electrically connected to a solar array assembly, the controller is electrically connected to an energy storage assembly and an inverter respectively, and the inverter is electrically connected to the overhead line assembly;

[0006] It also includes a photovoltaic anomaly tracking component for tracking the functional abnormal solar panels of the solar array component.

[0007] Preferably, the solar array assembly includes a plurality of columns, each of which is bolted to a concrete foundation below the columns, each of which is hinged to a crossbeam frame, each of which is bolted to a channel steel purlin, a plurality of solar panels are mounted on the channel steel purlin via a fixed structure, and an inclination structure is provided below the crossbeam frame, which is mounted on the column.

[0008] Preferably, the inclination structure includes an angle ring, which is installed on the crossbeam frame by bolts, and an arc groove is provided on the angle ring. A limit pin is slidably connected in the arc groove, and the limit pin is threadedly connected to the column. A plurality of gear teeth are provided on the outer ring of the angle ring, and the plurality of gear teeth are meshed with gears. The gears are installed on the electric rotating shaft, and the electric rotating shaft is rotatably connected to the shaft seat. The shaft seat is installed on the side platform, and the side platform is fixedly connected to the column.

[0009] Preferably, the fixing structure includes a card seat, with angle pressing plates fixed on both sides of the card seat, the angle pressing plates cooperate with the solar panels, a buffer strip is provided between the angle pressing plates and the solar panels, a fastening stud is rotatably connected to the card seat, a locking card is symmetrically hingedly connected to the lower side of the card seat, a semicircular groove is provided on the locking card, a tensioning cylinder is provided in the semicircular groove, the fastening stud passes through and is threadedly connected to the center section of the tensioning cylinder, a hand ring is fixed on the top of the fastening stud, and the locking card is nested and connected to the channel steel purlin.

[0010] Preferably, the overhead line assembly includes two A-frames, a truss is connected between the two A-frames, three sets of drop fuses are installed on the truss, the input end of the drop fuse is connected to the inverter, the output end of the drop fuse is connected to the cable, the cable is electrically connected to the high-voltage wire through an insulating connector, the high-voltage wire is connected to the truss through a connecting structure hinge, and the other end of the high-voltage wire is electrically connected to the power grid.

[0011] Preferably, the insulating connector includes an insulating shell, which is rotatably connected to three threaded interfaces, a conductive tee is provided in the insulating shell, and the three ends of the conductive tee are connected to connecting joints, a pressing groove is provided on the connecting joint, high-voltage wires are provided in the pressing grooves at the two horizontal ends, and a cable is provided in the pressing groove at the bottom, a pressure cover is hingedly connected to the top of the connecting joint, the pressure cover and the pressure groove cooperate with each other, an insulating sleeve is sleeved on the connecting joint and the high-voltage wire, and the insulating sleeve and the threaded interface are threadedly connected.

[0012] Preferably, the connection structure includes a bolt joint, one end of which is threadedly connected to the insulating terminal, a connecting frame is installed in the middle of the insulating terminal, the other end of the connecting frame is rotatably connected to the truss, and the other end of the bolt joint is threadedly connected to a ring, an elastic copper pressure ring is provided in the bolt joint, a pushing ring is provided in the ring, a flexible sealing ring is provided between the ring and the pushing ring, the pushing ring and the elastic copper pressure ring are nested with each other, and high-voltage wires are provided in the pushing ring and the elastic copper pressure ring.

[0013] Preferably, the energy storage component includes a basic frame, a plurality of photovoltaic energy storage cabinets are arranged in the basic frame, the photovoltaic energy storage cabinets are electrically connected to the controller and the inverter respectively, a rain shelter is arranged above the basic frame, and a cooling fan is arranged on the basic frame.

[0014] Preferably, the photovoltaic abnormality tracking component includes a control module, a data processing module, a detection module and an early warning module, and the detection module includes:

[0015] Several angle sensors: used to detect the tilt angle of each solar panel, which are arranged on the beam frame;

[0016] Photosensitive sensor: used to detect the intensity of sunlight, which is set on the solar panel;

[0017] Wind speed sensor: used to detect the wind speed at the location of the solar array assembly, which is installed on the column;

[0018] A number of current sensors: used to detect the power generation current of each solar panel, which are arranged on the solar panels;

[0019] A plurality of voltage sensors: used to detect the power generation voltage of each solar panel, which are arranged on the solar panels;

[0020] Pressure sensor: used to detect the pressure of the channel steel purlin, which is set on the channel steel purlin;

[0021] GPS sensor: used to detect the longitude and latitude of the location of the photovoltaic system, which is installed on the column;

[0022] The execution module includes a statistical module and an early warning module. The statistical module is used to statistically arrange the abnormal coefficient and emergency coefficient of the solar panel, and the early warning module is used to alarm and output the solar panel number and emergency level;

[0023] The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution unit to work based on the data results of the data processing module.

[0024] Preferably, the control module controls the execution module based on the data result of the data processing module, including the following steps:

[0025] Step 1: Calculate the anomaly coefficient of each solar panel based on the angle sensor, light sensor, wind speed sensor, current sensor, voltage sensor, pressure sensor and GPS sensor:

[0026]

[0027] Among them: A xy is the anomaly coefficient of each solar panel, U i is the detection value of the voltage sensor, I i is the detection value of the current sensor, θ is the solar declination angle, ω is the hour angle, is the local latitude, L is the detection value of the photosensor, ξ is the dispersion coefficient, K is the shielding coefficient, ρ is the air density, v is the detection value of the wind speed sensor, G is the detection value of the pressure sensor, m is the mass of the solar panel, g is the acceleration of gravity, S is the area of ​​the solar panel, ρ1 is the density of dust, U is the rated voltage of the solar panel, and I is the rated current of the solar panel;

[0028] Step 2: Data Processing Module Comparison A xy and A0:

[0029] When A xy>A0, the control module controls the statistical module of the execution module to calculate the emergency coefficient of the abnormal solar panel, and arranges them according to the size of the emergency coefficient to form a corresponding emergency level. The larger the emergency coefficient, the higher the corresponding emergency level. Then the alarm module outputs the xy coordinates of the solar panel in sequence according to the emergency level;

[0030]

[0031] Where: A0 is the standard value of the abnormal coefficient of the solar panel, r a is the emergency coefficient, V is the level standard, t is the abnormal time response time, and t0 is the standard abnormal response time. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0033] Figure 1 It is a structural schematic diagram of the present invention;

[0034] Figure 2 is a schematic structural diagram of a solar array assembly of the present invention;

[0035] Figure 3 The structure diagram of the fixed structure of the present invention is shown in FIG. Figure 1 ;

[0036] Figure 4 The structure diagram of the fixed structure of the present invention is shown in FIG. Figure 2 ;

[0037] Figure 5 It is a structural schematic diagram of an overhead line assembly of the present invention;

[0038] Figure 6 It is a schematic structural diagram of the insulating connector of the present invention;

[0039] Figure 7 It is a structural schematic diagram of the connection structure of the present invention;

[0040] Figure 8 It is a schematic diagram of the structure of the energy storage component of the present invention.

[0041] In the figure: 1. controller; 2. solar array assembly; 21. column; 22. concrete foundation; 23. beam frame; 24. channel steel purlin; 25. solar panel; 3. tilt structure; 31. angle ring; 32. arc groove; 33. limit pin; 34. gear; 35. gear; 36. electric shaft; 37. shaft seat; 38. side platform; 4. fixed structure; 41. seat; 42. angle pressing piece; 43. buffer strip; 44. fastening stud; 45. lock card; 46. semicircular groove; 47. tension cylinder; 48. hand ring; 5. overhead line assembly; 51. herringbone ; 52. Truss; 53. Drop insurance; 54. Cable; 55. High-voltage wire; 6. Insulating connector; 61. Insulating shell; 62. Threaded interface; 63. Conductive tee; 64. Connecting joint; 65. Pressure groove; 66. Pressure cover; 67. Insulating sleeve; 7. Connecting structure; 71. Bolted joint; 72. Insulating terminal; 73. Connecting frame; 74. Ring; 75. Elastic copper pressure ring; 76. Push ring; 77. Flexible sealing ring; 78. Elastic copper pressure ring; 8. Energy storage component; 81. Basic frame; 82. Photovoltaic energy storage cabinet; 83. Awning; 84. Cooling fan. DETAILED DESCRIPTION

[0042] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0043] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] The present invention provides the following embodiments

[0045] Example 1

[0046] The embodiment of the present invention provides an overhead line photovoltaic power generation system, such as Figure 1-8 As shown, it includes: a controller 1, the controller 1 is electrically connected to the solar array component 2, the controller 1 is electrically connected to the energy storage component 8 and the inverter respectively, and the inverter is electrically connected to the overhead line component 5;

[0047] It also includes a photovoltaic anomaly tracking component for tracking the functionally abnormal solar panels 25 of the solar array component 2.

[0048] The working principle and beneficial effects of the above technical solution are as follows: the sun shines on the solar array assembly 2, the solar array assembly 2 converts the solar energy into electrical energy, after the electrical energy is transmitted from the solar array assembly 2 to the controller 1, the controller 1 controls the current to be input into the energy storage assembly 8, the energy storage assembly 8 stabilizes the current and then inputs it into the inverter, the inverter inverts the DC current into three-phase current, and then inputs it into the power grid through the overhead line assembly 5;

[0049] The present invention utilizes the solar array assembly 2 to convert solar energy into electrical energy. This design can generate electricity using clean energy, thus avoiding environmental pollution. In addition, solar energy is highly renewable, has specific universality, and is low in cost. It can be constructed on a large scale for power generation. The design of the overhead line assembly 5 ensures that the electrical energy converted from solar energy can be efficiently transmitted over long distances, and the transmission cost is low. The design of the overhead line assembly 5 ensures that the cable connecting the solar array assembly 2 and the overhead line assembly 5 is suspended in the air, and air can be used as an insulating medium, thus avoiding the high-voltage wires from being connected to the ground after being damaged to form a high-voltage power plant. Electric shock occurs during the maintenance process, resulting in casualties. At the same time, the design of the energy storage component 8 can use the energy storage component 8 as a transfer station in the power transmission process. In response to the fluctuation of power under different lighting environments, the fluctuating power is continuously stored, and when certain conditions are met, stable power is output, which improves the utilization rate of power, reduces the impact on the power grid, and avoids the need for three-item power stabilization, thereby reducing the production cost of electricity. The design of the photovoltaic abnormality tracking component ensures the maintenance of the solar array component 2 during operation, reduces maintenance costs, and ensures the stable operation of the solar array component 2.

[0050] Example 2

[0051] On the basis of Example 1, the solar array assembly 2 includes a plurality of columns 21, each of which is bolted to a concrete foundation 22, each of which is hinged to a cross beam 23, each of which is bolted to a channel steel purlin 24, and a plurality of solar panels 25 are installed on the channel steel purlin 24 through a fixed structure 4, and an inclination structure 3 is provided below the cross beam 23, and the inclination structure 3 is installed on the column 21.

[0052] The inclination structure 3 includes an angle ring 31, which is installed on the crossbeam frame 23 by bolts. An arc groove 32 is provided on the angle ring 31. A limit pin 33 is slidably connected in the arc groove 32. The limit pin 33 is threadedly connected to the column 21. A plurality of gear teeth 34 are provided on the outer ring of the angle ring 31. The plurality of gear teeth 34 are meshed with gears 35. The gear 35 is installed on an electric shaft 36. The electric shaft 36 is rotatably connected to a shaft seat 37. The shaft seat 37 is installed on a side platform 38. The side platform 38 is fixedly connected to the column 21.

[0053] The fixing structure 4 includes a holder 41, and angled pressing sheets 42 are fixed on both sides of the holder 41. The angled pressing sheets 42 cooperate with the solar panel 25, and a buffer strip 43 is provided between the angled pressing sheets 42 and the solar panel 25. A fastening stud 44 is rotatably connected to the holder 41, and a locking card 45 is symmetrically hingedly connected to the lower side of the holder 41. The locking card 45 is provided with a semicircular groove 46, and a tensioning cylinder 47 is provided in the semicircular groove 46. The fastening stud 44 passes through and is threadedly connected to the central section of the tensioning cylinder 47. A hand ring 48 is fixed to the top of the fastening stud 44, and the locking card 45 is nested and connected to the channel steel purlin 24.

[0054] The working principle and beneficial effects of the above technical solution are as follows: when the solar array assembly 2 generates electricity, after the concrete foundation 22 is deeply buried underground, the column 21 is connected to the concrete foundation 22, and the crossbeam frame 23 on the column 21 serves as the basis of the channel steel purlin 24, and the channel steel purlin 24 supports the solar panel 25 and is fixed by the fixing structure 4. When the solar incident angle changes, the solar panel 25 is adjusted by the inclination structure 3;

[0055] When the tilt structure 3 adjusts the solar panel 25, the electric shaft 36 rotates on the shaft seat 37, so that the gear 35 rotates, and the gear 35 and the gear teeth 34 mesh with each other, so that the angle ring 31 rotates around the top of the column 21, and the angle ring 31 pulls the crossbeam frame 23 to rotate around the column 21 to achieve the angle adjustment of the solar panel 25. The arc groove 32 and the limit pin 33 on the angle ring 31 ensure the stability of the angle ring 31 during rotation;

[0056] When the fixing structure 4 fixes the solar panel 25, after placing the channel steel purlin 24 between the two locking cards 45, the hand ring 48 is rotated to make the fastening stud 44 screw into the tightening cylinder 47, driving the holder 41 to descend until the angle pressing piece 42 is placed on the solar panel 25. Then, due to the restriction of the angle pressing piece 42, the fastening stud 44 drives the tightening cylinder 47 to rise, and the tightening cylinder 47 pushes the locking card 45 between the semicircular grooves 46, so that the locking card 45 rotates toward the center and nests with the channel steel purlin 24 to achieve locking. When the fastening stud 44 continues to rotate, the tightening cylinder 47 cannot be separated from the semicircular groove 46 because the locking card 45 is locked with the channel steel purlin 24. Under the reaction force, the tightening cylinder 47 remains fixed, so that the fastening stud 44 continues to be screwed into the tightening cylinder 47, increasing the pressure of the angle pressing piece 42 on the solar panel 25, thereby achieving the fixation of the solar panel 25.

[0057] The present invention is fixed underground by a concrete foundation 22, and the columns 21 are used as supports. This design can reduce the footprint of the solar array assembly 2, improve the land utilization rate of the solar array assembly 2, and the wind resistance area of ​​the columns 21 is small, so the influence of wind on the columns 21 is reduced. At the same time, the crossbeam frame 23 and the channel steel purlin 24 adopt a lightweight design, a simple structure, and reduce the pressure on the columns 21;

[0058] The inclination structure is rotated by the angle ring 31, the gear 34 and the gear 35. The design has a high load-bearing capacity during the rotation process, which can ensure the stability of the beam frame 23 during the rotation process. The gear 35 and the gear 34 have high versatility and applicability, which ensure the synchronization of the beam frame 23 in the same array during the rotation process, and avoid different inclination angles between the solar panels 25. At the same time, the design of the arc groove 32 and the limit pin 33 can ensure the stability of the rotation trajectory of the angle ring 31, and avoid the angle ring 31 from being skewed, which causes the overall structure to be stuck and collapsed.

[0059] The fixed structure 4 locks the channel steel purlin 24 through the locking card 45 and the tensioning cylinder 47. This design can connect the channel steel purlin 24 and the solar panel 25 through the fixed structure 4, ensuring the stable connection between the solar panel 25 and the channel steel purlin 24. The locking card 45, the fastening stud 44 and the tensioning cylinder 47 use the self-locking and reaction characteristics of the thread to ensure that the fixed structure 4 connecting the channel steel purlin 24 and the solar panel 25 will not be unlocked due to vibration and other influences, thereby ensuring the stable connection of the solar panel 25.

[0060] Example 3

[0061] On the basis of Example 1, the overhead line assembly 5 includes two A-frames 51, a truss 52 is connected between the two A-frames 51, three sets of drop fuses 53 are installed on the truss 52, the input end of the drop fuse 53 is connected to the inverter, and the output end of the drop fuse 53 is connected to the cable 54, the cable 54 is electrically connected to the high-voltage wire 55 through the insulating connector 6, the high-voltage wire 55 is hingedly connected to the truss 52 through the connecting structure 7, and the other end of the high-voltage wire 55 is electrically connected to the power grid.

[0062] The insulating connector 6 includes an insulating shell 61, on which three threaded interfaces 62 are rotatably connected. A conductive tee 63 is provided in the insulating shell 61, and the three ends of the conductive tee 63 are connected to a connecting joint 64. A pressing groove 65 is provided on the connecting joint 64. The pressing grooves 65 at the two horizontal ends are provided with high-voltage wires 55, and the pressing groove 65 at the bottom is provided with a cable 54. A pressure cover 66 is hingedly connected to the top of the connecting joint 64, and the pressure cover 66 and the pressure groove 65 cooperate with each other. An insulating sleeve 67 is sleeved on the connecting joint 64 and the high-voltage wire 55, and the insulating sleeve 67 and the threaded interface 62 are threadedly connected.

[0063] The connecting structure 7 includes a bolt joint 71, one end of which is threadedly connected to the insulating terminal 72, a connecting frame 73 is installed in the middle of the insulating terminal 72, the other end of the connecting frame 73 is rotatably connected to the truss 52, and the other end of the bolt joint 71 is threadedly connected to a ring 74, an elastic copper pressure ring 75 is provided in the bolt joint 71, a pushing ring 76 is provided in the ring 74, a flexible sealing ring 77 is provided between the ring 74 and the pushing ring 76, the pushing ring 76 and the elastic copper pressure ring 78 are nested with each other, and high-voltage wires 55 are provided in the pushing ring 76 and the elastic copper pressure ring 78.

[0064] The beneficial effects of the above technical solution are as follows: the herringbone frame 51 lifts the truss 52, the drop insurance 53 installed on the truss 52 is connected to the inverter and the high-voltage wire 55, and the inverter and the high-voltage wire 55 are short-circuit protected, the connection structure 7 on the truss 52 hangs the high-voltage wire 55 on the truss 52 to ensure the suspension of the high-voltage wire 55, and the insulating connector 6 connects the cable 54 to the high-voltage wire 55 to achieve the connection between the drop insurance 53 and the high-voltage wire 55;

[0065] When the insulating connector 6 connects the high-voltage wire 55 and the cable 54, the gland 66 is rotated open, and the copper wires in the high-voltage wire 55 and the cable 54 are placed in the pressing groove 65, and then the gland 66 is closed. After the gland 66 presses the copper wire, the insulating sleeve 67 is screwed into the threaded interface 62, and the insulating sleeve 67 is locked to the gland 66 and the high-voltage wire 55 and the cable 54 are tightened, and the conductive tee 63 in the insulating housing 61 realizes the connection of the line;

[0066] When the connection structure 7 is connected to the high-voltage wire 55, the high-voltage wire 55 is inserted into the bolt joint 71 and the insulating terminal 72, and the elastic copper pressure ring 75, the push ring 76 and the flexible sealing ring 77 are sleeved on the high-voltage wire 55. Under the push of the sleeve ring 74, the push ring 76 squeezes the elastic copper pressure ring 75 so that the elastic copper pressure ring 75 presses the high-voltage wire 55, thereby fixing the high-voltage wire 55. At the same time, the flexible sealing ring 77 blocks water from entering the bolt joint 71, and the insulating terminal 72 is connected to the truss 52 through the connecting frame 73;

[0067] The present invention utilizes the herringbone frame 51 and the truss 52 to hold up the high-voltage electric wire 55. This design can utilize the insulating properties of air to ensure the safety of the high-voltage power transmission process and avoid the high-voltage power from causing harm to personnel. In addition, this design can improve the space utilization rate and reduce the floor space occupied by the equipment.

[0068] The insulating connector 6 fixes the high-voltage wire 55 and the cable 54 through the pressing groove 65 and the pressing cover 66. This design can ensure the output process of the power and the mutual transfer between the high-voltage wire 55 and the cable 54. The design of the insulating housing 61 and the conductive tee 63 can ensure the safety of the insulating connector 6.

[0069] The connecting structure 7 is connected to the truss 52 through the insulating terminal 72, the bolt joint 71 and the connecting frame 73. This design can ensure that the high-voltage wire 55 can swing relative to the truss 52 under the action of wind, thereby avoiding tension and breakage between the high-voltage wire 55 and the truss 52. In addition, the design of the elastic copper pressure ring 75 and the pushing ring 76 can utilize friction to achieve a fixed connection of the high-voltage wire 55, thereby causing less damage to the high-voltage wire 55.

[0070] Example 4

[0071] On the basis of Example 1, the energy storage component 8 includes a basic frame 81, in which a plurality of photovoltaic energy storage cabinets 82 are arranged, and the photovoltaic energy storage cabinets 82 are electrically connected to the controller 1 and the inverter respectively. A rain shelter 83 is arranged above the basic frame 81, and a cooling fan 84 is arranged on the basic frame 81.

[0072] The beneficial effects of the above technical solution are as follows: a number of photovoltaic energy storage cabinets 82 are carried on the basic frame 81, and the photovoltaic energy storage cabinets 82 store the electric energy of the solar array assembly 2 and output it to the inverter for conversion into three currents. The canopy 83 on the basic frame 81 shields the photovoltaic energy storage cabinets 82, and the cooling fan 84 dissipates heat for the photovoltaic energy storage cabinets 82;

[0073] The photovoltaic energy storage cabinet of the present invention stores and transfers the electric energy generated by the solar array assembly 2. This design can prevent the electric energy generated by the solar array assembly 2 from impacting the power grid, reduce the volatility of electric energy, and improve the utilization rate of electric energy. The cooling fan 84 can dissipate heat from the photovoltaic energy storage cabinet 82 in a timely manner to prevent the photovoltaic energy storage cabinet from being overloaded and reducing efficiency due to heat.

[0074] Example 5

[0075] On the basis of Example 1, the photovoltaic abnormality tracking component includes a control module, a data processing module, a detection module and an early warning module, and the detection module includes:

[0076] A plurality of angle sensors: used to detect the tilt angle of each solar panel 25, which are arranged on the crossbeam frame 23;

[0077] Photosensor: used to detect the intensity of sunlight, which is arranged on the solar panel 25;

[0078] Wind speed sensor: used to detect the wind speed at the location of the solar array assembly 2, and is arranged on the column 21;

[0079] A plurality of current sensors: used to detect the power generation current of each solar panel 25, which are arranged on the solar panel 25;

[0080] A plurality of voltage sensors: used to detect the power generation voltage of each solar panel 25, which are arranged on the solar panel 25;

[0081] Pressure sensor: used to detect the pressure of the channel steel purlin 24, which is arranged on the channel steel purlin 24;

[0082] GPS sensor: used to detect the longitude and latitude of the location of the photovoltaic system, which is arranged on the column 21;

[0083] The execution module includes a statistical module and an early warning module. The statistical module is used to statistically arrange the abnormal coefficient and emergency coefficient of the solar panel 25. The early warning module is used to alarm and output the number and emergency level of the solar panel 25.

[0084] The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution unit to work based on the data results of the data processing module.

[0085] The control module controls the execution module based on the data result of the data processing module, including the following steps:

[0086] Step 1: Calculate the abnormal coefficient of 25 for each solar panel based on the angle sensor, light sensor, wind speed sensor, current sensor, voltage sensor, pressure sensor and GPS sensor:

[0087]

[0088] Among them: A xy is the anomaly coefficient of 25 for each solar panel, U i is the detection value of the voltage sensor, in V,I i is the detection value of the current sensor, the unit is I, θ is the solar declination angle, ω is the hour angle, is the local latitude, L is the detection value of the photosensor, ξ is the dispersion coefficient, K is the shielding coefficient s -2 , ρ is the air density, unit is kg / m 3 , v is the detection value of the wind speed sensor, the unit is m / s, G is the detection value of the pressure sensor, the unit is N, m is the mass of the solar panel 25, the unit is kg, g is the gravity acceleration, the unit is m / s 2 , S is the area of ​​the solar panel 25, in m 2 , ρ1 is the density of dust, in kg / m 3 , U is the rated voltage V of the solar panel 25 , I is the rated current I of the solar panel 25 ;

[0089] Step 2: Data Processing Module Comparison A xy and A0:

[0090] When A xy >A0, the control module controls the statistical module of the execution module to calculate the emergency coefficient of the abnormal solar panel 25, and arranges them according to the size of the emergency coefficient to form a corresponding emergency level. The larger the emergency coefficient, the higher the corresponding emergency level. Then the alarm module outputs the xy coordinates of the solar panel 25 in sequence according to the emergency level;

[0091]

[0092] Where: A0 is the standard value of the abnormal coefficient of the solar panel 25, r a is the emergency coefficient, V is the level standard, which is the lowest level standard value of the abnormality, t is the abnormal time response time, which is the time for the abnormality to be responded to and repaired by personnel after the control module detects and calculates the abnormality of the solar panel, the unit is s, t0 is the standard abnormal response time, which is the shortest time for the abnormality to be responded to and repaired by personnel after the control module detects and calculates the abnormality of the solar panel, the unit is s;

[0093] The emergency levels are arranged from large to small, with the first being the Level 1 emergency level, the second being the Level 2 emergency level, the third being the Level 3 emergency level, and so on, with the Nth being the Level 4 emergency level.

[0094] The beneficial effects of the above technical solution are as follows: after the solar array assembly 2 has been running for a long time, the solar panels 25 therein may have various abnormal faults due to differences, and after the abnormal faults of several solar panels 25 in the solar array assembly 2, the overall power generation of the solar array assembly 2 will be reduced, but the abnormally functioning solar panels 25 in the entire solar array assembly 2 cannot be identified by the naked eye, and cannot be quickly found and repaired, so by monitoring each solar panel 25 in the solar array assembly 2, a solar panel 25 numbering array of the solar array assembly 2 is established, and after the abnormal function of the solar panel 25 is found through the photovoltaic abnormality tracking component, its emergency level is determined according to the abnormal function of the solar panel 25, and the control module controls the execution module to output the number and emergency level of the solar panel 25, so as to facilitate the subsequent maintenance of personnel;

[0095] The present invention utilizes a control module, a data processing module, a detection module and an early warning module to monitor the solar array assembly 2, detect the working condition of the solar panel 25 in real time, and issue a timely early warning for the solar panel 25 with abnormal functions. This design greatly reduces the workload of maintenance personnel, improves maintenance efficiency, and ensures the stable operation of the solar array assembly 2.

[0096] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An overhead line photovoltaic power generation system, characterized in that: include: A controller (1), the controller (1) is electrically connected to a solar array assembly (2), the controller (1) is electrically connected to an energy storage assembly (8) and an inverter respectively, and the inverter is electrically connected to an overhead line assembly (5); It also includes a photovoltaic anomaly tracking component for tracking a solar panel (25) with a functional anomaly in the solar array component (2).

2. The overhead line photovoltaic power generation system according to claim 1, characterized in that: The solar array assembly (2) comprises a plurality of columns (21), each of which is bolted to a concrete foundation (22) below the columns (21), each of which is hinged to a crossbeam frame (23), each of which is bolted to a channel steel purlin (24), a plurality of solar panels (25) are mounted on the channel steel purlin (24) via a fixing structure (4), and an inclination structure (3) is provided below the crossbeam frame (23), and the inclination structure (3) is mounted on the column (21).

3. An overhead line photovoltaic power generation system according to claim 2, characterized in that: The inclination structure (3) comprises an angle ring (31), which is mounted on the crossbeam frame (23) by bolts, and an arc groove (32) is provided on the angle ring (31), and a limit pin (33) is slidably connected in the arc groove (32), and the limit pin (33) is threadedly connected to the column (21), and a plurality of gear teeth (34) are provided on the outer ring of the angle ring (31), and the plurality of gear teeth (34) are meshed with a gear (35), and the gear (35) is mounted on an electric rotating shaft (36), and the electric rotating shaft (36) is rotatably connected to a shaft seat (37), and the shaft seat (37) is mounted on a side platform (38), and the side platform (38) is fixedly connected to the column (21).

4. The overhead line photovoltaic power generation system according to claim 2, characterized in that: The fixing structure (4) comprises a base (41), and angled pressing sheets (42) are fixed on both sides of the base (41), the angled pressing sheets (42) cooperate with the solar panel (25), a buffer strip (43) is arranged between the angled pressing sheets (42) and the solar panel (25), a fastening stud (44) is rotatably connected to the base (41), a locking card (45) is symmetrically hingedly connected to the lower side of the base (41), a semicircular groove (46) is arranged on the locking card (45), a tensioning cylinder (47) is arranged in the semicircular groove (46), the fastening stud (44) passes through and is threadedly connected to the central section of the tensioning cylinder (47), a hand ring (48) is fixed to the top of the fastening stud (44), and the locking card (45) is nested and connected to the channel steel purlin (24).

5. The overhead line photovoltaic power generation system according to claim 1, characterized in that: The overhead line assembly (5) comprises two herringbone frames (51), a truss (52) is connected between the two herringbone frames (51), three sets of drop fuses (53) are installed on the truss (52), the input end of the drop fuse (53) is connected to the inverter, the output end of the drop fuse (53) is connected to the cable (54), the cable (54) is electrically connected to the high-voltage wire (55) through an insulating connector (6), the high-voltage wire (55) is hingedly connected to the truss (52) through a connecting structure (7), and the other end of the high-voltage wire (55) is electrically connected to the power grid.

6. The overhead line photovoltaic power generation system according to claim 5, characterized in that: The insulating connector (6) comprises an insulating shell (61), three threaded interfaces (62) are rotatably connected to the insulating shell (61), a conductive tee (63) is arranged inside the insulating shell (61), three ends of the conductive tee (63) are connected to a connecting joint (64), three pressing grooves (65) are arranged on the connecting joint (64), high-voltage wires (55) are arranged in the pressing grooves (65) at the two horizontal ends, a cable (54) is arranged in the pressing groove (65) at the bottom, a pressure cover (66) is hingedly connected to the top of the connecting joint (64), the pressure cover (66) and the pressing groove (65) cooperate with each other, an insulating sleeve (67) is sleeved on the connecting joint (64) and the high-voltage wire (55), and the insulating sleeve (67) and the threaded interface (62) are threadedly connected.

7. The overhead line photovoltaic power generation system according to claim 5, characterized in that: The connection structure (7) comprises a bolt joint (71), one end of which is threadedly connected to an insulating terminal (72), a connecting frame (73) is installed in the middle of the insulating terminal (72), the other end of the connecting frame (73) is rotatably connected to the truss (52), the other end of the bolt joint (71) is threadedly connected to a sleeve ring (74), an elastic copper pressure ring (75) is arranged in the bolt joint (71), a pushing ring (76) is arranged in the sleeve ring (74), a flexible sealing ring (77) is arranged between the sleeve ring (74) and the pushing ring (76), the pushing ring (76) and the elastic copper pressure ring (78) are nested with each other, and a high-voltage wire (55) is arranged in the pushing ring (76) and the elastic copper pressure ring (78).

8. The overhead line photovoltaic power generation system according to claim 1, characterized in that: The energy storage assembly (8) comprises a basic frame (81), a plurality of photovoltaic energy storage cabinets (82) are arranged in the basic frame (81), the photovoltaic energy storage cabinets (82) are electrically connected to the controller (1) and the inverter respectively, a rain shelter (83) is arranged above the basic frame (81), and a cooling fan (84) is arranged on the basic frame (81).

9. The overhead line photovoltaic power generation system according to claim 1, characterized in that: The photovoltaic abnormality tracking component includes a control module, a data processing module, a detection module and an execution module. The detection module includes: A plurality of angle sensors: used to detect the tilt angle of each solar panel (25), which are arranged on the crossbeam frame (23); A light sensor is used to detect the intensity of sunlight, and is disposed on the solar panel (25); A wind speed sensor: used to detect the wind speed at the location of the solar array assembly (2), and arranged on the column (21); A plurality of current sensors: used to detect the power generation current of each solar panel (25), which are arranged on the solar panel (25); A plurality of voltage sensors: used to detect the power generation voltage of each solar panel (25), which are arranged on the solar panel (25); A pressure sensor: used for detecting the pressure of the channel steel purlin (24), and arranged on the channel steel purlin (24); GPS sensor: used to detect the longitude and latitude of the location of the photovoltaic system, and arranged on the column (21); The execution module includes a statistical module and an early warning module. The statistical module is used to statistically arrange the abnormal coefficient and the emergency coefficient of the solar panel (25). The early warning module is used to alarm and output the number and emergency level of the solar panel (25). The detection module is electrically connected to the data processing module, the control module is electrically connected to the data processing module and the execution module, and the control module controls the execution unit to work based on the data results of the data processing module.

10. An overhead line photovoltaic power generation system according to claim 9, characterized in that: The control module controls the execution module based on the data result of the data processing module, including the following steps: Step 1: Calculate the abnormal coefficient of each solar panel (25) based on the angle sensor, light sensor, wind speed sensor, current sensor, voltage sensor, pressure sensor and GPS sensor: Among them: A xy is the anomaly coefficient of each solar panel (25), U i is the detection value of the voltage sensor, I i is the detection value of the current sensor, θ is the solar declination angle, ω is the solar hour angle, is the local latitude, L is the detection value of the photosensor, ξ is the dispersion coefficient, K is the shielding coefficient, ρ is the air density, v is the detection value of the wind speed sensor, G is the detection value of the pressure sensor, m is the mass of the solar panel (25), g is the gravitational acceleration, S is the area of ​​the solar panel (25), ρ1 is the density of dust, U is the rated voltage of the solar panel (25), and I is the rated current of the solar panel (25); Step 2: Data Processing Module Comparison A xy and A0: When A xy >A0, the control module controls the statistical module of the execution module to calculate the emergency coefficient of the abnormally functioning solar panel (25), and arranges them according to the size of the emergency coefficient to form a corresponding emergency level. The larger the emergency coefficient, the higher the corresponding emergency level. Then, the alarm module outputs the xy coordinates of the solar panel (25) in sequence according to the emergency level; Where: A0 is the standard value of the abnormal coefficient of the solar panel (25), r a is the emergency coefficient, V is the level standard, t is the abnormal time response time, and t0 is the standard abnormal response time.

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