High-capacity high-voltage direct-current power transmission structure based on multi-strand aluminum wires and insulating viaduct

Abstract

The invention discloses a high-capacity high-voltage direct-current power transmission structure based on multi-strand aluminum wires and an insulated viaduct. The high-capacity high-voltage direct-current power transmission structure comprises a transmission system, a cooling system, a supply system and a lightning protection system, the conveying system comprises a power transmission line, an elevated support and a compartment body. The elevated support is provided with a base, an insulating part and a supporting part from bottom to top, and the supporting part is fixed to the ground through the insulating part and the base. The power transmission line is positioned in the compartment body and is provided with a plurality of steel-cored aluminum wires; the carriage body is fixed at the upper end of the supporting part; the supply system comprises a water tower and a second water pump; the lightning protection system is provided with a lightning rod and a lightning protection steel cable. By arranging the transmission system and the cooling system, the power transmission line dissipates heat through the heat conduction water pipe, so that heat emitted by the power transmission line in the working process can be quickly transmitted out of the compartment body, and the situation that the temperature of the steel-cored aluminum wire is too high is avoided; and the stability and the overload capacity of the high-capacity high-voltage direct-current power transmission structure based on the multi-strand aluminum wires and the insulated viaduct are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission lines, in particular to a large-capacity high-voltage direct current power transmission structure based on multiple aluminum wires and an insulating viaduct. Background Art

[0002] With the implementation of the power grid's strategies of "transmitting electricity from west to east, supplying electricity from north to south, and interconnecting the whole country" and "global energy internet", the power transmission lines are vulnerable to natural weather, and the cross-river power transmission corridors are tight, and the land resources are tight and the development of urban power grids is coordinated with the development of the environment. It is necessary to develop large-capacity, low-impact, long-distance, high-reliability transmission lines that are coordinated with the development of the urban environment. Therefore, the power corridors in the current power transmission environment are becoming more and more crowded; at the same time, with the increasing load and performance requirements of the power grid, higher requirements are placed on the overload capacity of the transmission lines. Summary of the invention

[0003] To solve the above problems, the purpose of the present invention is to provide a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts, which uses a cooling system and a supply system combined to cool the transmission line, thereby ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0004] The technical solution adopted by the present invention to solve the problem is:

[0005] In a first aspect, an embodiment of the present application provides a large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and an insulated viaduct, including a transmission system, a cooling system, a supply system, and a lightning protection system;

[0006] The transmission system comprises a transmission line, an elevated support and a box; the elevated support is provided with a base, an insulating part and a supporting part from bottom to top, and the supporting part is fixed on the ground through the insulating part and the base; the transmission line is located in the box, and the transmission line is provided with a plurality of steel core aluminum wires; the box is fixed on the upper end of the supporting part;

[0007] The cooling system includes a hot water pipe matched with the power transmission line, a first water pump located in the hot water pipe, and a heat dissipation device for cooling the hot water pipe, wherein the hot water pipe is fixed in the compartment to take away the heat generated by the steel core aluminum wire;

[0008] The supply system comprises a water tower and a second water pump, the water tower is connected to the hot water pipe, and the second water pump is located in the water tower;

[0009] The lightning protection system comprises a lightning protection tower, which is located on the side of the elevated support and has a lightning rod and a lightning protection steel cable on the top.

[0010] The above-mentioned large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts has at least the following beneficial effects: by setting up a transmission system and a cooling system, the transmission line dissipates heat through a heat-conducting water pipe, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the carriage, avoiding the steel-core aluminum wire from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a cooling system and a supply system, the heat absorbed by the heat-conducting water pipe is transmitted to the heat dissipation device through the water circulation driven by the first water pump and the second water pump, avoiding the overheating of the cooling system, and improving the operating stability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a lightning protection system, the lightning rod and the lightning protection steel cable can effectively prevent the transmission line from being damaged by lightning, and improve the lightning protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0011] Furthermore, the support part is provided with a battery and a fan directly opposite to the heat dissipation device, the first water pump and the fan are electrically connected to the battery; the battery is also connected to a generator, the base is provided with a motor, and the motor drives the generator to operate through a belt. By providing the battery and the motor, the fan and the first water pump can be continuously and stably provided with working voltage, ensuring that the fan and the heat dissipation device can continuously and quickly take away the heat in the hot water pipe, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulated viaduct.

[0012] Furthermore, the cooling system is further provided with a temperature sensor for monitoring the internal temperature of the hot water pipe, and the first water pump and the fan are both electrically connected to the temperature sensor. By providing the temperature sensor, the internal temperature of the hot water pipe can be monitored in real time and accurately, and the first water pump and the fan can adjust the opening according to the reading of the temperature sensor to accurately adjust the internal temperature of the hot water pipe.

[0013] In a second aspect, the embodiments of the present application also provide a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulated viaduct, including a transmission system, a cooling system, a supply system, and a lightning protection system;

[0014] The transmission system comprises a transmission line, an elevated support and a box; the elevated support is provided with a base, an insulating part and a supporting part from bottom to top, and the supporting part is fixed on the ground through the insulating part and the base; the transmission line is located in the box, and the transmission line is provided with a plurality of steel core aluminum wires; the box is fixed on the upper end of the supporting part;

[0015] The cooling system comprises a hot water pipe matched with the power transmission line, a water inlet and heat-absorbing fins for dissipating heat from the hot water pipe, wherein the water inlet is located at both ends of the hot water pipe; the steel core aluminum wire is attached to the hot water pipe;

[0016] The supply system comprises a water tower and a second water pump, the water tower is connected to the hot water pipe through the water inlet, and the second water pump is located in the water tower;

[0017] The lightning protection system comprises a lightning protection tower, which is located on the side of the elevated support and has a lightning rod and a lightning protection steel cable on the top.

[0018] The above-mentioned large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts has at least the following beneficial effects: by setting up a transmission system and a cooling system, the transmission line dissipates heat through a heat-conducting water pipe, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the carriage, avoiding the steel-core aluminum wire from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a cooling system and a supply system, the second water pump can continuously transmit cooling water to the water inlet, and the heat-conducting water pipe can continuously absorb heat and transmit it outward through the heat-absorbing fins, avoiding overheating of the cooling system, and improving the operating stability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a lightning protection system, the lightning rod and the lightning protection steel cable can effectively prevent the transmission line from being damaged by lightning, and improve the lightning protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0019] Furthermore, the heat conducting water pipe is arranged at an angle, and a steam outlet is arranged at the upper end of the heat conducting water pipe. By arranging the steam outlet, it is ensured that the cooling water in the heat conducting water pipe can be discharged to the outside of the compartment through the steam outlet after absorbing heat to form water vapor, so as to achieve the effect of rapid cooling and improve the heat dissipation efficiency of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0020] Furthermore, a flow controller is provided between the water inlet and the hot water pipe. By providing the flow controller, the amount of water entering the hot water pipe can be precisely controlled to ensure the cooling effect of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct.

[0021] Furthermore, a transport assembly is provided between the base and the support, and the transport assembly includes a plastic elevator, an insulating chain and an insulating rope. By providing the transport assembly, it is ensured that materials can be transported between the base and the support through the plastic elevator, insulating chain and insulating rope with insulating properties, thereby improving the insulation performance of the elevated support and the safety of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts.

[0022] Furthermore, the insulating part is made of basalt fiber or glass fiber. Basalt fiber and glass fiber have the advantages of good insulation, strong heat resistance, good corrosion resistance and high mechanical strength. The insulating part is made of basalt fiber or glass fiber, which can effectively improve the structural strength and insulation performance of the insulating part.

[0023] Furthermore, the hot water pipe is also connected to a water storage tank, the water tower is provided with a water inlet and a water outlet located above the water storage tank, and the water inlet is connected to a water source through an insulating water tank and a third water pump. By providing a water storage tank, an insulating water tank and a water tower, the supply stability of cooling water in the hot water pipe can be ensured, and the situation of too low water volume in the hot water pipe can be avoided, which affects the heat dissipation performance of the power transmission line.

[0024] Furthermore, a connection assembly is provided between the steel core aluminum wires, and the connection assembly includes a connection base, a fixing ring and a connection block, and the fixing ring is fixed on the connection base; the connection block is connected to the adjacent transmission line through the fixing ring. By providing the connection assembly, the fixing ring can fix one end of the steel core aluminum wire on the connection base, so that the adjacent steel core aluminum wires are connected through the connection block, thereby improving the connection stability and flexibility of the steel core aluminum wire.

[0025] The beneficial effects of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts are as follows: by setting up a transmission system and a cooling system, the transmission line dissipates heat through a heat-conducting water pipe, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the compartment, thereby avoiding the steel-core aluminum wire from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a lightning protection system, lightning rods and lightning protection cables can effectively prevent the transmission line from being damaged by lightning, thereby improving the lightning protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up a transport system, the transmission line can be cooled and cooled, thereby improving the transmission line protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts. The transmission component ensures that materials can be transported between the base and the support part through the insulating plastic elevator, insulating chain and insulating rope, thereby improving the insulation performance of the elevated support and the safety of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts; by setting up water storage tanks, insulating water tanks and water towers, the supply stability of cooling water in the hot water pipe can be guaranteed, avoiding the situation where the water volume in the hot water pipe is too low, which affects the heat dissipation performance of the transmission line; by setting up a connecting component, the fixing ring can fix one end of the steel core aluminum wire on the connecting base, so that the adjacent steel core aluminum wires can be connected through the connecting block, thereby improving the connection stability and flexibility of the steel core aluminum wire.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic structural diagram of a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to an embodiment of the present invention;

[0029] Figure 2 This is a schematic structural diagram of a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to another embodiment of the present invention;

[0030] Figure 3 This is a cross-sectional view of a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to another embodiment of the present invention;

[0031] Figure 4 for Figure 1 Connection diagram of the transmission line;

[0032] Figure 5 for Figure 1 Structural diagram of the conveying system and cooling system;

[0033] Figure 6 A structural diagram of a conveying system and a cooling system in another embodiment of the present invention;

[0034] Figure 7 for Figure 1 Structural diagram of the middle base and support part;

[0035] Figure 8 This is a structural diagram of a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct in a high mountain installation environment according to an embodiment of the present invention;

[0036] Fig. 9 This is a structural diagram of a large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and an insulating viaduct in a river installation environment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] Reference Figures 1 to 5 , an embodiment of the present invention provides a large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and an insulating viaduct, including a transmission system 100, a cooling system 200, a supply system 300 and a lightning protection system 400;

[0039] The transmission system 100 includes a transmission line 110, an elevated support 120 and a box 130; the elevated support 120 is provided with a base 121, an insulating portion 122 and a support portion 123 from bottom to top, and the support portion 123 is fixed to the ground through the insulating portion 122 and the base 121; the transmission line 110 is located in the box 130, and the transmission line 110 is provided with a plurality of steel core aluminum wires 111; the box 130 is fixed to the upper end of the support portion 123;

[0040] The cooling system 200 includes a hot water pipe 210 matched with the power transmission line 110, a first water pump 220 located in the hot water pipe 210, and a heat dissipation device 230 for cooling the hot water pipe 210. The hot water pipe 210 is fixed in the compartment 130 to take away the heat generated by the steel core aluminum wire 111.

[0041] The supply system 300 includes a water tower 310 and a second water pump 320 . The water tower 310 is connected to the hot water pipe 210 . The second water pump 320 is located inside the water tower 310 .

[0042] The lightning protection system 400 includes a lightning protection tower 410 . The lightning protection tower 410 is located on a side of the elevated support 120 . A lightning rod 411 and a lightning protection steel cable 412 are provided on the top of the lightning protection tower 410 .

[0043] By setting up the transmission system 100 and the cooling system 200, the transmission line 110 dissipates heat through the hot water pipe 210, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the car body 130, thereby avoiding the steel core aluminum wire 111 from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up the cooling system 200 and the supply system 300, the heat absorbed by the hot water pipe 210 is transmitted to the heat dissipation device 230 through the water circulation driven by the first water pump 220 and the second water pump 320, thereby avoiding the cooling system 200 from overheating, and improving the operating stability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up the lightning protection system 400, the lightning rod 411 and the lightning protection steel cable 412 can effectively prevent the transmission line from being damaged by lightning, and improve the lightning protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0044] In another embodiment, a battery 240 and a fan 231 facing the heat dissipation device 230 are provided on the support portion 123, and the first water pump 220 and the fan 231 are electrically connected to the battery 240; the battery 240 is also connected to a generator 241, and a motor 242 is provided on the base 121, and the motor 242 drives the generator 241 to operate through a belt 243. By providing the battery 240 and the motor 242, the fan 231 and the first water pump 220 can be continuously and stably provided with working voltage, ensuring that the fan 231 and the heat dissipation device 230 can continuously and quickly take away the heat in the hot water pipe 210, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct.

[0045] In another embodiment, the motor 242 drives the generator 241 through the belt 243. By providing the belt 243, the generator 241 is prevented from being electrically connected to the motor 242, so that the support portion 123 and the base 121 are electrically conductive, and the insulation performance between the generator 241 and the motor 242 is improved.

[0046] In another embodiment, the cooling system 200 is further provided with a temperature sensor 250 for monitoring the internal temperature of the hot water pipe 210, and the first water pump 220 and the fan 231 are both electrically connected to the temperature sensor 250. By providing the temperature sensor 250, it is convenient to monitor the internal temperature of the hot water pipe 210 in real time and accurately, and the first water pump 220 and the fan 231 can adjust the opening according to the reading of the temperature sensor 250 to accurately adjust the internal temperature of the hot water pipe 210.

[0047] Reference Figure 1 , Figure 2 and Figure 6 , the embodiment of the present application also provides a large-capacity high-voltage direct current transmission structure based on multiple strands of aluminum wires and an insulating viaduct, including a transmission system 100, a cooling system 200 and a supply system 300;

[0048] The transmission system 100 includes a transmission line 110, an elevated support 120 and a box 130; the elevated support 120 is provided with a base 121, an insulating portion 122 and a support portion 123 from bottom to top, and the support portion 123 is fixed to the ground through the insulating portion 122 and the base 121; the transmission line 110 is located in the box 130, and the transmission line 110 is provided with a plurality of steel core aluminum wires 111; the box 130 is fixed to the upper end of the support portion 123;

[0049] The cooling system 200 includes a hot water pipe 210 matched with the power transmission line 110, a water inlet 260 and heat absorbing fins 270 for dissipating heat from the hot water pipe 210, the water inlet 260 is located at both ends of the hot water pipe 210; the steel core aluminum wire 111 is attached to the hot water pipe 210;

[0050] The supply system 300 includes a water tower 310 and a second water pump 320 . The water tower 310 is connected to the hot water pipe 210 via a water inlet 260 . The second water pump 320 is located in the water tower 310 .

[0051] The lightning protection system 400 includes a lightning protection tower 410 . The lightning protection tower 410 is located on a side of the elevated support 120 . A lightning rod 411 and a lightning protection steel cable 412 are provided on the top of the lightning protection tower 410 .

[0052] By setting up the transmission system 100 and the cooling system 200, the transmission line 110 dissipates heat through the hot water pipe 210, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the car body 130, avoiding the steel core aluminum wire 111 from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up the cooling system 200 and the supply system 00, the second water pump 320 can continuously transmit cooling water to the water inlet 260, and the hot water pipe 210 can continuously absorb heat and transmit it outward through the heat-absorbing fins 270, avoiding the cooling system 200 from overheating, and improving the operating stability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts; by setting up the lightning protection system 400, the lightning rod 411 and the lightning protection steel cable 412 can effectively prevent the transmission line from being damaged by lightning, and improve the lightning protection capability of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and insulating viaducts.

[0053] In another embodiment, the hot water pipe 210 is tilted, and a steam outlet 211 is further provided at the upper end of the hot water pipe 210. By providing the steam outlet 211, it is ensured that the cooling water in the hot water pipe 210 can be discharged to the outside of the compartment 130 through the steam outlet 211 after absorbing heat to form water vapor, thereby achieving a rapid cooling effect and improving the heat dissipation efficiency of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct.

[0054] In another embodiment, a flow controller 280 is further provided between the water inlet 260 and the hot water pipe 210. By providing the flow controller 280, it is convenient to accurately control the amount of water entering the hot water pipe 210, thereby ensuring the cooling effect of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct.

[0055] Reference Figure 7In another embodiment, a transport assembly 140 is provided between the base 121 and the support 123, and the transport assembly 140 includes a plastic elevator 141, an insulating chain 142, and an insulating rope 143. By providing the transport assembly 140, it is ensured that the plastic elevator 141, the insulating chain 142, and the insulating rope 143 with insulating properties can be used to transport materials between the base 121 and the support 123, thereby improving the insulation performance of the elevated support 120 and the safety of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts.

[0056] In another embodiment, the insulating part 122 is made of basalt fiber or glass fiber. Basalt fiber and glass fiber have the advantages of good insulation, strong heat resistance, good corrosion resistance, and high mechanical strength. The insulating part is made of basalt fiber or glass fiber, which can effectively improve the structural strength and insulation performance of the insulating part.

[0057] In another embodiment, the hot water pipe 210 is further connected to a water storage tank 213, and the water tower 310 is provided with a water inlet 311 and a water outlet 312 located above the water storage tank 213, and the water inlet 311 is connected to a water source through an insulating water tank 330 and a third water pump 314. By providing the water storage tank 213, the insulating water tank 330 and the water tower 310, the supply stability of cooling water in the hot water pipe 210 can be ensured, and the situation of too low water volume in the hot water pipe 210 can be avoided, which affects the heat dissipation performance of the transmission line 110.

[0058] Reference Figure 4 In another embodiment, a connection assembly 170 is provided between the steel core aluminum wires 111. The connection assembly 170 includes a connection base 171, a fixing ring 172 and a connection block 173. The fixing ring 172 is fixed on the connection base 171; the connection block 173 is connected to the adjacent transmission line 110 through the fixing ring 172. By providing the connection assembly 170, the fixing ring 172 can fix one end of the steel core aluminum wire 111 on the connection base 171, so that the adjacent steel core aluminum wires 111 are connected through the connection block 173, thereby improving the connection stability and flexibility of the steel core aluminum wire 111. Figure 4 As shown, in some embodiments, nitrogen is filled in the compartment 130 and the connection assembly 170 to form a protective layer 132 to prevent the steel core aluminum wire 111 from being oxidized and to increase the service life of the steel core aluminum wire 111 .

[0059] In another embodiment, a canopy 131 is provided at the upper end of the carriage 130, and the canopy 131 is inclined toward the side close to the hot water pipe 210. By providing the canopy 131, rainwater is effectively diverted to prevent rainwater from accumulating on the carriage 130 and affecting the stability of the transmission system 100, thereby improving the safety of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct. Figure 2In some embodiments, a rain shield 126 is provided between the insulating portion 122 and the supporting portion 123 to prevent rainwater from corroding the insulating portion 122 and improve the insulation performance and service life of the elevated support 120 .

[0060] Reference Figure 3 In another embodiment, the distance L between two adjacent support parts 123 arranged in parallel with each other is greater than the preset safety distance. The distance between two adjacent support parts 123 is greater than the preset safety distance, which can effectively avoid the situation where the distance between the charged support parts 123 is too small to generate arcs, causing a short circuit in the transmission line 110, and improve the working stability of the transmission line 110. Specifically, in actual applications, the safety distance is 22 meters, that is, the distance L between two adjacent support parts 123 is greater than 22 meters, so as to ensure the stable operation of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts.

[0061] In another embodiment, a lightning protection tower 410 is provided on the side of the elevated support 120. The height of the lightning protection tower 410 is greater than the height of the compartment 130, and the lightning protection tower 410 is connected to the base 121. By providing the lightning protection tower 410, effective lightning protection is provided for the transmission system 100, so as to avoid the transmission line 110 being damaged by lightning and affecting the safety of the large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct. Figure 2 As shown, in some embodiments, a lightning rod 411 and a lightning protection cable 412 are provided on the top of the lightning protection tower 410 to enhance the protection performance of the lightning protection tower 410 .

[0062] In another embodiment, an equipotential line is also provided in a large-capacity high-voltage direct current transmission structure based on a multi-strand aluminum wire and an insulated viaduct. An equipotential line refers to a line with the same potential inside the equipment. It is generally believed that each point on the same equipotential line has the same potential. The main function of the equipotential line is to ensure the consistency of the potential of each part inside the equipment, thereby preventing potential electrical hazards. The operator and the first water pump 220 and other equipment are all connected to the equipotential line.

[0063] The working principle of the present invention is further described below.

[0064] During the construction process, according to the installation environment of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and an insulated viaduct, the transmission line 110, the cooling system 200 and the supply system 300 are installed on the ground in sequence; specifically, firstly, the base 121, the insulating part 122 and the support part 123 are installed on the ground in sequence, the box 130 is installed on the support part 123, and the hot water pipe 210, the first water pump 220 and the heat dissipation device 230 are installed on the box 130, and the transmission line 110 is installed on the side of the hot water pipe 210 so that the transmission line 110 can fit the hot water pipe 210, and the water circulation in the hot water pipe 210 is driven by the first water pump 220, so that the heat generated by the transmission line 110 during operation is effectively and continuously transmitted to the heat dissipation device 230 through the hot water pipe 210; Figure 5 As shown, in some embodiments, a fan 231 and a battery 240 are installed below the heat dissipation device 230, so that the battery 240 can drive the first water pump 220 and the fan 231 to operate, thereby improving the cooling effect of the cooling system 200; in addition, the battery 240 is also connected to a generator 241, and a motor 242 is arranged on the base 121, and the motor 242 drives the generator 241 to operate through a belt 243, thereby completing the installation of the cooling system 200. Figure 6 As shown, in other embodiments, water inlets 260 and flow controllers 280 are installed at both ends of the hot water pipe 210, heat absorbing fins 270 and steam outlets 212 are installed on the hot water pipe 210, and the hot water pipe 210 is inclined.

[0065] Specifically, Figure 8 As shown, in a high mountain installation environment, after the elevated support 120 is installed on the ground, in order to enable the transmission line 110 to cross the mountain and the height distance h between the transmission line 110 and the top of the mountain is greater than the preset vertical safety distance, it is necessary to superimpose the horizontal unit 180 and the vertical unit 190 on the support part 123, wherein the horizontal unit 180 and the vertical unit 190 are provided with the compartment 130 and the transmission line 110; in some embodiments, the distance d between the vertical units 190 at the same height should be greater than the preset horizontal safety distance; Fig. 9 As shown, in the river installation environment, in order to ensure that the transmission line 110 can stably cross the river, it is necessary to install iron towers 124 on both sides of the river, and connect the transmission line 110 to the iron towers 124 through horizontal units 180 and vertical units 190, and finally fix the transmission line 110 through insulators 125. In order to facilitate the connection and installation between the transmission lines 110, it is necessary to install connection components 170 at both ends of the transmission line 110, such as Figure 4As shown, one end of the transmission line 110 to be connected is fixed on the connection base 171 through a fixing ring 172, and the adjacent steel core aluminum wires 111 are connected through the connection block 173; wherein, a plastic slide bar 175 is provided on the connection base 171, so that the steel core aluminum wire 111 can be slidably installed on the connection base 171 and fixedly installed through a fixing pile 174, and finally a partition plate 176 is provided between the two fixing piles 174 to complete the front and rear connection of the transmission line 110. In some embodiments, in order to facilitate the transfer of materials between the base 121 and the support part 123, in order to ensure the insulation performance of the insulating part 122, a transport component 140 with insulation performance is provided, including a plastic elevator 141, an insulating chain 142 and an insulating rope 143, so as to facilitate operations such as personnel climbing and material transportation. In order to ensure a stable supply of cooling water in the hot water pipe 210, a water tower 310 needs to be installed on the side of the elevated support 120. The water tower 310 is provided with a water inlet 311 and a water outlet 312 located above the water storage tank 213. The water inlet 311 is connected to the water source through an insulating water tank 330 and a second water pump 320. Adjacent insulating water tanks 330 are connected through plastic water pipes 340. Specifically, as shown in FIG. Figure 1 As shown, since water has a certain conductivity, it is necessary to set an upper water inlet 313 at the upper end of the water tower 310, and ensure that the distance s between the upper water inlet 313 and the water surface position in the water tower 310 is greater than the preset vertical insulation distance to prevent the power supply of the water tower 310 from affecting the insulation performance of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts. In actual applications, in order to ensure a stable supply of cooling water, the interval between the water towers 310 is set to 1 km.

[0066] During operation, in order to improve the operational stability and safety of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulated viaducts, corresponding data acquisition modules are set in the transmission system 100, the cooling system 200 and the supply system 300 to grasp the operational status of the transmission system 100, the cooling system 200 and the supply system 300 in real time. Specifically, a temperature sensor 250, a first water pump 220 working status monitoring module, a second water pump 320 working status monitoring module, a generator 241 working status monitoring module, and a flow controller 280 working status monitoring module are set in the hot water pipe 210. In actual applications, various monitoring data and surveillance videos of the camera are sent to the webpage of the operation and maintenance platform through the communication module of the Internet of Things for real-time monitoring. Figure 5 As shown, the temperature of the cooling water in the hot water pipe 210 is monitored in real time, the speed and pumping amount of the first water pump 220 are dynamically adjusted, the circulation speed of the cooling water is changed, and the temperature of the cooling water is reduced. Figure 6As shown, the temperature of the cooling water in the hot water pipe 210 is monitored in real time, and the amount of water entering the hot water pipe 210 through the water inlet 260 is adjusted by the flow controller 280 to ensure that the hot water pipe 210 can quickly take away the heat so that the cooling water in the hot water pipe 210 is converted into steam and transmitted outward through the steam outlet 212. In the actual operation process, the diameter of a single strand of steel core aluminum wire 111 is 6 cm, and the weight per meter is (3.14X0.03X0.03)X2.7 tons / cubic=7.6kg; the weight of ten strands of steel core aluminum wire 111 is 76kg per meter; the weight of 25 meters of ten strands of steel core aluminum wire 111 is about 2 tons, the diameter of a single strand of steel core aluminum wire 111 is 6 cm, the current carrying capacity is 10,000 amperes, and the current carrying capacity of ten strands of steel core aluminum wire 111 is 100,000 amperes. Therefore, the heat generation per meter of a single steel core aluminum wire 111 is (2.65X10^-8 / (3.14X0.03X0.03))X10^8=930W, and the heat generation per meter of ten steel core aluminum wires 111 is 9.3kW. In practical applications, a large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct can achieve a large-capacity transmission current of 500,000 amperes.

[0067] From the above description, it can be seen that the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts of the present invention is provided with a transmission system 100 and a cooling system 200, and the transmission line 110 dissipates heat through a heat-conducting water pipe 210, so that the heat generated by the transmission line during operation can be quickly transmitted to the outside of the compartment 130, thereby avoiding the steel core aluminum wire 111 from overheating, and ensuring the stability and overload capacity of the large-capacity high-voltage direct current transmission structure based on multi-strand aluminum wires and insulating viaducts; by providing a transport component 140, it is ensured that the plastic elevator 141 with insulating properties, the insulating chain 142 and the insulating The material is transported by the insulated suspension rope 143, thereby improving the insulation performance of the elevated support 120 and the safety of the large-capacity high-voltage direct current transmission structure based on the multi-strand aluminum wire and the insulating viaduct; by arranging the water storage tank 213, the insulating water tank 330 and the water tower 310, the supply stability of cooling water in the hot water pipe 210 can be guaranteed, and the situation of too low water volume in the hot water pipe 210 can be avoided, which affects the heat dissipation performance of the transmission line 110; by arranging the connecting assembly 170, the fixing ring 172 can fix one end of the steel core aluminum wire 111 on the connecting base 171, so that the adjacent steel core aluminum wires 111 are connected through the connecting block 173, thereby improving the connection stability and flexibility of the steel core aluminum wire 111.

[0068] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulated viaduct, characterized in that: Including transmission system, cooling system, supply system and lightning protection system; The transmission system comprises a transmission line, an elevated support and a box; the elevated support is provided with a base, an insulating part and a supporting part from bottom to top, and the supporting part is fixed on the ground through the insulating part and the base; the transmission line is located in the box, and the transmission line is provided with a plurality of steel core aluminum wires; the box is fixed on the upper end of the supporting part; The cooling system includes a hot water pipe matched with the power transmission line, a first water pump located in the hot water pipe, and a heat dissipation device for cooling the hot water pipe, wherein the hot water pipe is fixed in the compartment to take away the heat generated by the steel core aluminum wire; The supply system comprises a water tower and a second water pump, the water tower is connected to the hot water pipe, and the second water pump is located in the water tower; The lightning protection system comprises a lightning protection tower, which is located on the side of the elevated support and has a lightning rod and a lightning protection steel cable on the top.

2. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 1, characterized in that: The support portion is provided with a battery and a fan directly opposite to the heat dissipation device. The first water pump and the fan are electrically connected to the battery. The battery is also connected to a generator. The base is provided with a motor, and the motor drives the generator to operate via a belt.

3. The large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 2 is characterized in that: The cooling system is further provided with a temperature sensor for monitoring the internal temperature of the hot water pipe, and the first water pump and the fan are both electrically connected to the temperature sensor.

4. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct, characterized in that: Including transmission system, cooling system, supply system and lightning protection system; The transmission system comprises a transmission line, an elevated support and a box; the elevated support is provided with a base, an insulating part and a supporting part from bottom to top, and the supporting part is fixed on the ground through the insulating part and the base; the transmission line is located in the box, and the transmission line is provided with a plurality of steel core aluminum wires; the box is fixed on the upper end of the supporting part; The cooling system comprises a hot water pipe matched with the power transmission line, a water inlet and heat-absorbing fins for dissipating heat from the hot water pipe, wherein the water inlet is located at both ends of the hot water pipe; the steel core aluminum wire is attached to the hot water pipe; The supply system comprises a water tower and a second water pump, the water tower is connected to the hot water pipe through the water inlet, and the second water pump is located in the water tower; The lightning protection system comprises a lightning protection tower, which is located on the side of the elevated support and has a lightning rod and a lightning protection steel cable on the top.

5. A large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 4, characterized in that: The hot water conducting pipe is arranged obliquely, and a steam outlet is also arranged at the upper end of the hot water conducting pipe.

6. A large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 5, characterized in that: A flow controller is also provided between the water inlet and the hot water conducting pipe.

7. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 1 or 4, characterized in that: A transport component is provided between the base and the support part, and the transport component comprises a plastic elevator, an insulating chain and an insulating hanging rope.

8. A large-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 7, characterized in that: The insulating part is made of basalt fiber or glass fiber.

9. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 1 or 4, characterized in that: The hot water pipe is also connected to a water storage tank. The water tower is provided with a water inlet and a water outlet located above the water storage tank. The water inlet is connected to a water source through an insulating water tank and a third water pump.

10. A high-capacity high-voltage direct current transmission structure based on multiple aluminum wires and an insulating viaduct according to claim 1 or 4, characterized in that: A connection assembly is provided between the steel core aluminum wires, and the connection assembly comprises a connection base, a fixing ring and a connection block, wherein the fixing ring is fixed on the connection base; and the connection block is connected to the adjacent transmission lines through the fixing ring.

Images