Line flexible sectional type photovoltaic system based on municipal street lamp system and installation method

Abstract

The invention relates to a municipal street lamp system-based linear flexible segmented photovoltaic system and an installation method, the municipal street lamp system-based linear flexible segmented photovoltaic system comprises a fastening platform, a segmented linear flexible support system, a frame edge fastening photovoltaic panel and a wiring system, the fastening platform is in fastening connection with a street lamp post, the fastening platform tensions and fixes the segmented linear flexible support system, and the frame edge fastening photovoltaic panel is connected with the wiring system. The frame edge fastening type photovoltaic panels are sequentially connected to steel strands of the sectional type linear flexible supporting system in series, and circuits on the frame edge fastening type photovoltaic panels are connected in series through the wiring system for networking. Through the developed fastening platform, the segmented line flexible supporting system, the frame edge fastening type photovoltaic panel and the wiring system, a pioneer of photovoltaic power generation in the urban municipal field is created, and a new practice direction is developed for urban updating and the photovoltaic power generation field.

Description

Technical Field

[0001] This invention relates to the fields of new energy and urban renewal, and in particular to a flexible segmented photovoltaic system based on municipal street lighting systems and its installation method. Background Technology

[0002] As an important form of clean energy application, photovoltaic (PV) power generation technology has made significant progress in large-scale power plant applications in recent years, especially in open areas such as mountainous regions and deserts where it has achieved centralized, large-scale deployment. However, its application in urban municipal environments still faces significant limitations: on the one hand, existing urban PV projects are mostly limited to rooftop distributed systems, which are difficult to promote due to the complexity of building structures and property rights; on the other hand, the PV transformation of municipal public facilities such as streetlights has not yet formed a systematic solution. Currently, PV applications in streetlights are mostly based on independent units, that is, small PV panels are installed on the top of a single streetlight, which can only meet its own power supply needs and cannot achieve regional grid-based power generation. This results in core problems such as low energy utilization, system dispersion, and lack of spatial resource integration. Summary of the Invention

[0003] The present invention aims to overcome the shortcomings of the prior art and provide a linear flexible segmented photovoltaic system and installation method for municipal street lighting systems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] The linear flexible segmented photovoltaic system based on the municipal street light system includes a fastening platform, a segmented linear flexible support system, frame-edge fastened photovoltaic panels, and a wiring system. The fastening platform is fastened to the street light pole. The fastening platform tensions and fixes the segmented linear flexible support system. The frame-edge fastened photovoltaic panels are sequentially connected in series on the steel strands of the segmented linear flexible support system. The lines on the frame-edge fastened photovoltaic panels are connected in series and networked through the wiring system.

[0006] The fastening platform includes a lower-bearing ring fastener, an upper-bearing I-shaped working platform, and I-type connecting bolts. The lower-bearing ring fastener is located at the lower end of the upper-bearing I-shaped working platform and is in close contact with the upper-bearing I-shaped working platform.

[0007] The aforementioned under-support ring fastener includes a left half-ring and a right half-ring that are symmetrically arranged. The left half-ring includes a left semi-circular ring, a left supporting horn, and a left fastening plate. The left supporting horn is integrally connected to the middle outer diameter of the left semi-circular ring. A left fastening plate is integrally connected to each end of the left semi-circular ring. A circular hole is provided on the left fastening plate. The right half-ring includes a right semi-circular ring, a right supporting horn, and a right fastening plate. The left and right semi-circular rings are joined together to form a circle. The inner radii of the left and right semi-circular rings are equal to the outer diameter of the street light pole. The left supporting horn is wedge-shaped, and the right-angled surface of the left supporting horn is welded to the left semi-circular ring.

[0008] The aforementioned top-bearing I-beam work platform includes a left platform and a right platform that are symmetrical. The left platform includes a left web plate, a left U-shaped rod, and a left connecting plate. The left web plate is a trapezoidal solid steel material. One end of the left web plate is welded to the left connecting plate on both sides, and the other end is welded to the middle of the left U-shaped rod. The cross-section of the left U-shaped rod is U-shaped. Two bolt holes are opened at each end of the left U-shaped rod. The right platform includes a right web plate, a right U-shaped rod, and a right connecting plate. The I-type connecting bolts are tension bolts. The I-type connecting bolts pass through the round holes on the left and right fastening plates to fasten the left and right half rings to the street light pole. The I-type connecting bolts pass through the bolt holes on the left and right connecting plates to bolt and fasten the left and right connecting plates, thereby fastening the left and right platforms to the street light pole.

[0009] The segmented flexible support system includes steel strands, tension supports, clamps, jacks, and Type II connecting bolts. The tension supports are securely bolted to the left and right U-shaped rods via Type II connecting bolts. The tension supports have circular holes, and the clamps are fitted into the circular holes of the tension supports. The tension supports tension and lock the steel strands through the clamps. The jacks are hand-held tension jacks used to tension the steel strands.

[0010] The frame-edge fastened photovoltaic panel includes a photovoltaic panel, a metal frame, and a fastening device. The metal frame wraps around the edge of the photovoltaic panel. The fastening device includes a wire threading component and a clamping plate. The wire threading component has a central hole in its cross-section with a diameter consistent with the diameter of the steel strand. One side of the hole in the wire threading component is welded to the four corners of the metal frame, and the other side of the hole is open. A clamping plate is welded to the end of the opening, and a round hole is made on the surface of the clamping plate.

[0011] The wiring system includes a photovoltaic panel wiring system, junction boxes, and junction box wiring. The photovoltaic panel wiring system includes a main line and branch lines. One end of the branch line is connected to the frame-mounted photovoltaic panel, and the other end is connected in series with the main line. The main line is connected to the junction box. The junction box wiring connects the junction boxes on the same side of the left and right U-shaped poles.

[0012] The installation method for a flexible segmented photovoltaic system based on municipal street lighting systems includes the following construction steps:

[0013] S1. Calibrate the fastening position: Determine and calibrate the position of the fastening platform;

[0014] S2. Install and tighten the under-bearing ring fastener: Connect the left and right semicircular rings of the under-bearing ring fastener to the street light pole, and lock the left and right fastening plates together with I-type connecting bolts.

[0015] S3. Install and fasten the upper-bearing I-beam work platform: Install the upper-bearing I-beam work platform close to the lower-bearing ring fastener. The left and right platforms are fastened to the street light pole, and the left and right connecting plates are locked together by I-type connecting bolts.

[0016] S4. Install and tighten the tensioning supports: Tighten the tensioning supports at both ends of the top surface of the left and right U-shaped rods using type II connecting bolts;

[0017] S5. Steel wire rope through-frame fastening photovoltaic panel fastener: The steel strands in the segmented flexible support system pass through the fastener in the frame fastening photovoltaic panel, and the upper and lower clamps are locked in the fastener by bolts;

[0018] S6. Tensioning steel strand: The clamps are used in conjunction with the tensioning supports. The steel strand passes through the clamps and is tensioned by the jacks.

[0019] S7. Anchoring tensioned steel strands with clamps: The steel strands are clamped with clamps;

[0020] S8. Fastening and securing the fastening device to the wire rope clamp: The threading member in the fastening device is welded to the four corners of the metal frame. The opening end of the other side of the threading member is welded with a clamp plate. The center of the cross section of the threading member is opened. The steel strand is threaded through the hole and locked in the threading member by bolts through the round holes on the clamp plate.

[0021] S9. Connection between bus and junction box: The photovoltaic panel circuit system includes bus and branch lines. One end of the branch line is connected to the frame-mounted photovoltaic panel, and the other end is connected in series with the bus. The bus is connected to the junction box.

[0022] S10. Junction box-to-junction connection network: Junction boxes on the same side of the left and right U-shaped poles are connected by junction box-to-junction connection.

[0023] S11. The bus is connected to the power station.

[0024] The beneficial effects of this invention are as follows: By working in conjunction with existing municipal street light systems, this invention uses street light poles as vertical support units, adapts to different types of street light poles, and pioneers photovoltaic power generation in the urban municipal field through the developed fastening platform, segmented flexible support system, frame-edge fastening photovoltaic panels and wiring system, opening up new practical directions for urban renewal and photovoltaic power generation. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of the left and right platforms after they are separated according to the present invention;

[0027] Figure 3 for Figure 1 Enlarged view of a portion of point A in the middle;

[0028] Figure 4 for Figure 1 Enlarged view of a portion of point B in the middle;

[0029] Figure 5 This is a flowchart illustrating the construction process of the present invention.

[0030] In the diagram: 1-Fastening platform; 11-Underlying ring fastener; 111-Left semi-circular ring; 112-Left supporting horn; 113-Left fastening plate; 12-Upper-bearing I-shaped working platform; 121-Left web plate; 122-Left U-shaped rod; 123-Left connecting plate; 13-Type I connecting bolt; 2-Segmented flexible support system; 21-Steel strand; 22-Tension support; 23-Type II connecting bolt; 24-Clamping plate; 3-Frame-edge fastened photovoltaic panel; 31-Photovoltaic panel; 32-Metal frame; 33-Fastening device; 331-Through-through component; 332-Clamping plate; 4-Wiring system; 41-Photovoltaic panel wiring system; 42-Gateway box; 43-Gateway wiring; 5-Streetlight pole;

[0031] The following will describe in detail, with reference to the accompanying drawings, embodiments of the invention. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0033] The linear flexible segmented photovoltaic system based on the municipal street light system includes a fastening platform 1, a segmented linear flexible support system 2, a frame-edge fastened photovoltaic panel 3, and a wiring system 4. The fastening platform 1 is fastened to the street light pole 5. The fastening platform 1 tensions and fixes the segmented linear flexible support system 2. The frame-edge fastened photovoltaic panel 3 is sequentially connected in series on the steel strands 21 of the segmented linear flexible support system 2. The lines on the frame-edge fastened photovoltaic panel 3 are connected in series and networked through the wiring system 4.

[0034] The fastening platform 1 includes a lower bearing ring fastener 11, an upper bearing I-shaped working platform 12, and an I-type connecting bolt 13. The lower bearing ring fastener 11 is located at the lower end of the upper bearing I-shaped working platform 12 and is in close contact with the upper bearing I-shaped working platform 12.

[0035] The lower-bearing annular fastener 11 includes a left half-ring and a right half-ring that are symmetrical. The left half-ring includes a left semi-circular ring 111, a left supporting horn 112, and a left fastening plate 113. The left supporting horn 112 is integrally connected to the middle outer diameter of the left semi-circular ring 111. A left fastening plate 113 is integrally connected to each end of the left semi-circular ring 111. A circular hole is opened on the left fastening plate 113. The right half-ring includes a right semi-circular ring, a right supporting horn, and a right fastening plate. The left and right semi-circular rings 111 are joined together to form a circle. The inner radii of the left and right semi-circular rings 111 and 111 are equal to the outer diameter of the street lamp pole 5. The left supporting horn 112 is wedge-shaped, and the right angle surface of the left supporting horn 112 is welded to the left semi-circular ring 111.

[0036] The aforementioned upper-bearing I-shaped working platform 12 includes a left platform and a right platform that are symmetrically arranged. The left platform includes a left web plate 121, a left U-shaped rod 122, and a left connecting plate 123. The left web plate 121 is a trapezoidal solid steel material. One end of the left web plate 121 is welded to the left connecting plate 123 on both sides, and the other end is welded to the middle of the left U-shaped rod 122. The cross-section of the left U-shaped rod 122 is U-shaped. Two bolt holes are opened at each end of the left U-shaped rod 122. The right platform includes a right web plate, a right U-shaped rod, and a right connecting plate. The I-type connecting bolt 13 is a tension bolt. The I-type connecting bolt 13 passes through the round holes on the left fastening plate 113 and the right fastening plate to fasten the left half ring and the right half ring to the street lamp pole 5. The I-type connecting bolt 13 passes through the bolt holes on the left connecting plate 123 and the right connecting plate to bolt and fasten the left connecting plate and the right connecting plate, thereby fastening the left platform and the right platform to the street lamp pole 5.

[0037] The segmented flexible support system 2 includes steel strand 21, tensioning support 22, clamping plate 24, jack, and type II connecting bolt 23. The tensioning support 22 is firmly bolted to the left U-shaped rod 122 and the right U-shaped rod through the type II connecting bolt 23. The tensioning support 22 has a round hole, and the clamping plate 24 is fitted into the round hole of the tensioning support 22. The tensioning support 22 tensions and locks the steel strand 21 through the clamping plate 24. The jack is a hand-held tensioning jack, which is used to tension the steel strand 21. The steel strand 21 is made of low-relaxation prestressed steel strand to reduce the influence of temperature changes on elongation.

[0038] The frame-edge fastened photovoltaic panel 3 includes a photovoltaic panel 31, a metal frame 32, and a fastening device 33. The metal frame 32 wraps the photovoltaic panel 31 with metal. The fastening device 33 includes a threading member 331 and a clamping plate 332. The threading member 331 has a hole at the center of its cross-section, and the hole diameter is consistent with the diameter of the steel strand 21, with a deviation controlled within ±1mm. One side of the hole in the threading member 331 is welded to the four corners of the metal frame 32, and the other side of the hole is open. The clamping plate 332 is welded to the end of the opening. Two round holes are opened on the surface of the clamping plate 332.

[0039] The wiring system 4 includes a photovoltaic panel wiring system 41, a junction box 42, and junction box wiring 43. The photovoltaic panel wiring system 41 includes a main line and branch lines. One end of the branch line is connected to the frame-mounted photovoltaic panel 3, and the other end is connected in series with the main line. The main line is connected to the junction box 42. The junction box wiring 43 connects the left U-shaped rod 122 and the junction box 42 on the same side of the right U-shaped rod.

[0040] The installation method for a flexible segmented photovoltaic system based on municipal street lighting systems includes the following construction steps:

[0041] S1. Calibrate the fastening position: Determine and calibrate the position of fastening platform 1;

[0042] S2. Install and tighten the under-bearing ring fastener: Connect the left semi-circular ring 111 and the right semi-circular ring of the under-bearing ring fastener 11 to the street light pole 5, and lock the left fastening plate 113 and the right fastening plate together with the I-type connecting bolt 13.

[0043] S3. Install and fasten the upper-bearing I-beam work platform: Install the upper-bearing I-beam work platform 12 close to the lower-bearing ring fastener 11. The left platform and the right platform are fastened to the street light pole 5, and the left connecting plate 123 and the right connecting plate are connected and locked together by the I-type connecting bolts 13.

[0044] S4. Install and tighten the tensioning support: Tighten the tensioning support 22 at both ends of the top surface of the left U-shaped rod 122 and the right U-shaped rod using type II connecting bolts 23;

[0045] S5. Wire rope through frame edge fastening photovoltaic panel fastener: The steel strand 21 in the segmented flexible support system 2 passes through the fastener 331 in the frame edge fastening photovoltaic panel 3, and the upper and lower clamps 332 lock the steel strand 21 in the fastener 331 by bolts.

[0046] S6. Tensioning steel strand: The clamp 24 is used in conjunction with the tensioning support 22. The steel strand 21 passes through the clamp 24 and is tensioned by the jack.

[0047] S7. Anchoring the tensioned steel strand with clamps: clamping the steel strand 21 with clamps 24;

[0048] S8. Fastening the fastening device and clamping the wire rope: The threading member 331 in the fastening device 33 is welded to the four corners of the metal frame 32. The clamping plate 332 is welded to the open end of the other side of the threading member 331. The center of the cross section of the threading member 331 has an opening. The steel strand 21 is threaded through the hole and locked in the threading member 331 by bolts passing through the round hole on the clamping plate 332.

[0049] S9. Connection between bus and junction box: The photovoltaic panel circuit system 41 includes a bus and branch lines. One end of the branch line is connected to the frame-edge fastened photovoltaic panel 3, and the other end is connected in series with the bus. The bus is connected to the junction box 42.

[0050] S10. Junction box connection network: Junction box 43 connects the left U-shaped pole 122 and the junction box 42 on the same side of the right U-shaped pole;

[0051] S11. The bus is connected to the power station.

[0052] In the description of the invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this invention, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0055] The invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution, or direct application to other situations without modification, are all within the scope of protection of the invention.

Claims

1. A flexible segmented photovoltaic system based on municipal street lighting systems, characterized in that, It includes a fastening platform (1), a segmented flexible support system (2), a frame-edge fastened photovoltaic panel (3), and a wiring system (4). The fastening platform (1) is fastened to the street light pole (5). The fastening platform (1) tensions and fixes the segmented flexible support system (2). The frame-edge fastened photovoltaic panel (3) is connected in series on the steel strand (21) of the segmented flexible support system (2). The lines on the frame-edge fastened photovoltaic panel (3) are connected in series and networked through the wiring system (4).

2. The flexible segmented photovoltaic system based on a municipal street light system according to claim 1, characterized in that, The fastening platform (1) includes a lower bearing ring fastener (11), an upper bearing I-shaped working platform (12) and an I-type connecting bolt (13). The lower bearing ring fastener (11) is located at the lower end of the upper bearing I-shaped working platform (12) and is in close contact with the upper bearing I-shaped working platform (12).

3. The flexible segmented photovoltaic system based on a municipal street light system according to claim 2, characterized in that, The lower bearing ring fastener (11) includes a left half ring and a right half ring that are symmetrical. The left half ring includes a left semi-circular ring (111), a left supporting horn (112) and a left fastening plate (113). The left supporting horn (112) is integrally connected to the middle outer diameter of the left semi-circular ring (111). A left fastening plate (113) is integrally connected to each end of the left semi-circular ring (111). A circular hole is provided on the left fastening plate (113). The right half ring includes a right semi-circular ring, a right supporting horn and a right fastening plate. The left semi-circular ring and the right semi-circular ring (111) are joined together to form a circle. The inner radii of the left semi-circular ring (111) and the right semi-circular ring are equal to the outer diameter of the street lamp pole (5). The left supporting horn (112) is wedge-shaped. The right angle surface of the left supporting horn (112) is welded to the left semi-circular ring (111).

4. The flexible segmented photovoltaic system based on a municipal street light system according to claim 3, characterized in that, The aforementioned upper-bearing I-beam work platform (12) includes a left platform and a right platform that are symmetrically arranged. The left platform includes a left web plate (121), a left U-shaped rod (122), and a left connecting plate (123). The left web plate (121) is a trapezoidal solid steel material. One end of the left web plate (121) is welded to the left connecting plate (123) on both sides, and the other end is welded to the middle of the left U-shaped rod (122). The cross-section of the left U-shaped rod (122) is U-shaped, and each end of the left U-shaped rod (122) is open. Two bolt holes are provided, one above the other. The right platform includes a right web, a right U-shaped rod, and a right connecting plate. The type I connecting bolt (13) is a tension bolt. The type I connecting bolt (13) passes through the round holes on the left fastening plate (113) and the right fastening plate to fasten the left half ring and the right half ring to the street lamp pole (5). The type I connecting bolt (13) passes through the bolt holes on the left connecting plate (123) and the right connecting plate to bolt and fasten the left connecting plate and the right connecting plate, thereby fastening the left platform and the right platform to the street lamp pole (5).

5. The flexible segmented photovoltaic system based on a municipal street light system according to claim 4, characterized in that, The segmented flexible support system (2) includes steel strand (21), tensioning support (22), clamp (24), jack and type II connecting bolt (23). The tensioning support (22) is firmly bolted to the left U-shaped rod (122) and the right U-shaped rod through the type II connecting bolt (23). The tensioning support (22) has a round hole, and the clamp (24) is fitted into the round hole of the tensioning support (22). The tensioning support (22) tensions and locks the steel strand (21) through the clamp (24). The jack is a hand-held tensioning jack, which is used to tension the steel strand (21).

6. The flexible segmented photovoltaic system based on a municipal street light system according to claim 5, characterized in that, The frame-edge fastened photovoltaic panel (3) includes a photovoltaic panel (31), a metal frame (32), and a fastening device (33). The metal frame (32) wraps the photovoltaic panel (31) with metal. The fastening device (33) includes a threading member (331) and a clamping plate (332). The threading member (331) has a hole at the center of its cross-section, and the hole diameter is the same as the diameter of the steel strand (21). One side of the hole of the threading member (331) is welded to the four corners of the metal frame (32), and the other side of the hole is open. The clamping plate (332) is welded to the end of the opening. Two round holes are opened on the surface of the clamping plate (332).

7. The flexible segmented photovoltaic system based on a municipal street light system according to claim 6, characterized in that, The wiring system (4) includes a photovoltaic panel wiring system (41), a junction box (42), and junction box wiring (43). The photovoltaic panel wiring system (41) includes a bus and a branch line. One end of the branch line is connected to the frame-edge fixed photovoltaic panel (3), and the other end is connected in series with the bus. The bus is connected to the junction box (42). The junction box wiring (43) connects the left U-shaped rod (122) and the junction box (42) on the same side of the right U-shaped rod.

8. The installation method of the flexible segmented photovoltaic system based on the municipal street light system according to claim 7, characterized in that, The construction steps are as follows: S1. Calibrate the fastening position: Determine and calibrate the position of the fastening platform (1); S2. Install and tighten the under-bearing ring fastener: Connect the left half-ring (111) and the right half-ring of the under-bearing ring fastener (11) to the street lamp pole (5), and lock the left fastening plate (113) and the right fastening plate together with the I-type connecting bolt (13). S3. Install and fasten the upper-bearing I-beam work platform: Install the upper-bearing I-beam work platform (12) close to the lower-bearing ring fastener (11), and fasten the left platform and the right platform to the street lamp pole (5), and lock the left connecting plate (123) and the right connecting plate together with the I-type connecting bolt (13); S4. Install and tighten the tensioning support: Tighten the tensioning support (22) at both ends of the top surface of the left and right U-shaped rods (122) using type II connecting bolts (23); S5. Wire rope through frame edge fastening photovoltaic panel fastener: The steel strand (21) in the segmented line flexible support system (2) passes through the fastener (331) in the frame edge fastening photovoltaic panel (3), and the upper and lower clamps (332) lock the steel strand (21) in the fastener (331) by bolts. S6. Tensioning steel strand: The clamp (24) is used in conjunction with the tensioning support (22). The steel strand (21) passes through the clamp (24) and is tensioned by the jack. S7. Anchoring the tensioned steel strand with clamps: clamp the steel strand (21) with clamps (24); S8. Fastening the fastening device and clamping the wire rope: The threading member (331) in the fastening device (33) is welded to the four corners of the metal frame (32). The clamping plate (332) is welded to the open end of the other side of the threading member (331). The center of the cross section of the threading member (331) is opened, and the steel strand (21) is threaded through the hole. The steel strand (21) is locked in the threading member (331) by bolts passing through the round hole on the clamping plate (332). S9. Bus and junction box connection: The photovoltaic panel circuit system (41) includes a bus and a branch line. One end of the branch line is connected to the frame-edge fixed photovoltaic panel (3), and the other end is connected in series with the bus. The bus is connected to the junction box (42). S10. Box-to-box wiring connection network: Box-to-box wiring (43) connects the junction boxes (42) on the same side of the left U-shaped pole (122) and the right U-shaped pole; S11. The bus is connected to the power station.

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