Overhead AC line power supply device

Abstract

The present invention relates to an overhead AC line power supply device, comprising: an insulating device, which is used to be installed between phase conductors of different phases of an overhead AC line or between a phase conductor and a grounding member, and the insulating device has an insulating medium; a conductive layer, which is arranged along an equipotential layer in the insulating medium and is used to form an electrode; any two electrodes with different potentials are used to supply power to an electrical device. The present invention arranges a conductive layer along an equipotential layer in the insulating medium of the insulating device, and uses the conductive layer to form an electrode. There is a potential difference between different equipotential layers, and any two electrodes formed by the potential difference between the equipotential layers of the insulating device are used as power sources to supply power to the electrical device. The present invention can select a suitable equipotential layer for power supply according to the voltage requirements of the electrical device, and use the principle of capacitor voltage division to achieve power supply, which will not be affected by load changes or lightning impulse current, and provide a stable and controllable power supply for the electrical device.

Description

Technical Field

[0001] The invention relates to the technical field of overhead power transmission, and in particular to an overhead AC line power taking device. Background Art

[0002] Overhead line networks are widely distributed. In addition to being used for power transmission, they can also provide ancillary function platforms that can be used by power or other systems. For example, a remote terminal system (RTU, Remote Terminal Unit) can be set up on the overhead AC line to realize telemetry, telesignaling, remote control, and remote adjustment functions.

[0003] The overhead line network includes high-voltage and ultra-high-voltage electricity transmission networks. Generally, the voltage is reduced at the substations at the nodes of the power grid. However, for the auxiliary system equipment installed on the overhead line network, the required voltage is relatively low, and the high-voltage electricity transmitted by the overhead line cannot be directly used. At present, it is generally powered by a self-contained power supply, or a current transformer is used to draw power from the overhead AC line. Among them, if the self-contained power supply is a battery, it is necessary to monitor and charge the power, which is more troublesome to use. The use of current transformers to draw power has the following problems: since power is drawn on the phase line, it is difficult to power the equipment near the ground; the phase line current often changes with the line load, and generally cannot work when it is less than 100A; when the overhead AC line is struck by lightning and fails, a huge short-time current will be generated, which will burn the electronic parts and circuits in the equipment. Summary of the invention

[0004] Based on this, it is necessary to provide an overhead AC line power supply device that is not affected by current fluctuations in the overhead AC line and can provide power for use by auxiliary functional systems near the ground end and / or near the phase end.

[0005] An overhead AC line power taking device, comprising:

[0006] An insulating device, used for installation between phase conductors of different phases of an overhead AC line or between a phase conductor and a grounding member, the insulating device having an insulating medium;

[0007] The conductive layer is arranged along the natural equipotential layer in the insulating medium of the insulating device after being charged at the power frequency, and is used to form an electrode; any two electrodes with different potentials are used to supply power to the electrical device.

[0008] In one embodiment, there is at least one conductive layer, and each conductive layer is arranged along different natural equipotential layers in the insulating medium after being energized at the power frequency. Any conductive layer and the terminal electrode on the insulator are used to electrically connect the electrical device to supply power to the electrical device.

[0009] In one embodiment, the number of conductive layers is two or more, each conductive layer is arranged along different natural equipotential layers in the insulating medium after being energized at the power frequency, and any two conductive layers are used to electrically connect an electrical device to supply power to the electrical device.

[0010] In one embodiment, the insulating device is one of a disc insulator, a hollow post insulator, a solid post insulator or a pin insulator.

[0011] In one embodiment, the insulating device is a disc-shaped insulator;

[0012] The conductive layer is arranged in the bonding material between the phase terminal electrode and the insulating material of the disc-shaped insulator.

[0013] In one embodiment, the insulating device is a disc-shaped insulator;

[0014] The conductive layer is arranged in the bonding material between the ground terminal electrode and the insulating material of the disc-shaped insulator.

[0015] In one embodiment, the insulating device is a pin insulator, and the conductive layer is disposed in the adhesive material between the ground terminal electrode and the insulating material of the pin insulator.

[0016] In one embodiment, the insulating device is a solid post insulator, and the conductive layer is disposed in the skirt of the solid post insulator.

[0017] In one embodiment, the insulating device is a hollow column insulator, an electric field adjustment cover is arranged inside the hollow column insulator, the electric field adjustment cover is electrically connected to the end electrode of the hollow column insulator, an insulating layer is arranged on the surface of the electric field adjustment cover; and the conductive layer is fixed to the outer surface of the insulating layer.

[0018] In one embodiment, the conductive layer is any one of a metal conductive layer, a non-metal conductive layer, or a sintered layer of a conductor combined with a semiconductor glaze.

[0019] In one embodiment, the conductive layer is a mesh conductive layer or a porous ring conductive layer.

[0020] In one embodiment, the overhead AC line power taking device further comprises:

[0021] A first lead wire, a first end of which is electrically connected to one of the electrodes, and a second end of which is electrically connected to an input port of an electrical device;

[0022] The second lead has a first end electrically connected to another electrode and a second end electrically connected to another input port of the electrical device.

[0023] In one embodiment, the edge of the connecting head end of the terminal electrode of the insulating device for connecting with the adhesive material is in the shape of an arc surface.

[0024] The above-mentioned overhead AC line power-drawing device sets a conductive layer along the equipotential layer in the insulating medium of the insulating device, and uses the conductive layer to form electrodes. There is a potential difference between different equipotential layers. Any two electrodes formed by the potential difference between the equipotential layers of the insulating device are used as power supply devices to supply power. It can select a suitable equipotential layer for power drawing according to the voltage requirements of the power-consuming device, and uses the principle of capacitor voltage division to achieve power drawing. It will not be affected by load changes or lightning impulse current, and provides a stable and controllable power supply for the power-consuming device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an overhead AC line power supply device in which the insulating device is a pin-type insulator in an embodiment;

[0026] Figure 2 is a partial enlarged structural schematic diagram of an overhead AC line power taking device in an embodiment, in which the insulating device is a pin-type insulator;

[0027] Figure 3 1 is a schematic diagram of the structure of an overhead AC line power supply device in which the insulating device is a disc-shaped insulator and is used for supplying power near a phase end in one embodiment;

[0028] Figure 4 1 is a schematic diagram of a partially enlarged structure of an overhead AC line power supply device in which the insulating device is a disc-shaped insulator and is used for supplying power near a phase end in one embodiment;

[0029] Figure 5 1 is a schematic diagram of the structure of an overhead AC line power supply device in which the insulating device is a disc-shaped insulator and is used for supplying power near the ground in an embodiment;

[0030] Figure 6 is a partially enlarged schematic diagram of an overhead AC line power supply device in which the insulating device is a disc-shaped insulator and is used for supplying power near the ground in an embodiment;

[0031] Figure 7 1 is a schematic diagram of the structure of an overhead AC line power supply device in which the insulating device is a hollow post insulator in an embodiment;

[0032] Figure 8 1 is a schematic diagram of a partially enlarged structure of an overhead AC line power supply device in which the insulating device is a hollow column insulator and is used for supplying power near the ground in an embodiment;

[0033] Fig. 9 In one embodiment, the insulating device is a hollow column insulator and is a partially enlarged structural schematic diagram of an overhead AC line power supply device used for power supply near a phase end;

[0034] Fig.10is a schematic structural diagram of an overhead AC line power supply device in which the insulating device is a solid post insulator in one embodiment;

[0035] Fig.11 In one embodiment, the insulating device is a solid column insulator and is a partially enlarged structural schematic diagram of an overhead AC line power supply device used for supplying power near the ground;

[0036] Fig.12 In one embodiment, the insulating device is a solid column insulator and is a partially enlarged structural schematic diagram of an overhead AC line power supply device used for power supply near the phase end. DETAILED DESCRIPTION

[0037] In order to facilitate the understanding of the present invention, the present invention will be described more fully below. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0038] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to another element and integrated therewith, or there may be an intermediate element at the same time. The terms "installed", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] In one embodiment, if Figures 1 to 10 As shown, an overhead AC line power supply device is provided, comprising:

[0041] The insulating device 100 is used to be installed between phase conductors of different phases of an overhead AC line or between a phase conductor and a grounding member, and the insulating device 100 has an insulating medium;

[0042] The conductive layer 200 is arranged along the equipotential layer in the insulating medium to form electrodes; any two electrodes with different potentials are used to supply power to the electrical device.

[0043] The type and installation method of the insulating device 100 are selected according to the requirements of the overhead AC line, and the implementation of the present invention does not require changing the inherent installation method of the insulating device 100 .

[0044] The insulating device can support the phase conductor at the tower point of the overhead transmission line and play an important role in insulation. The insulating device is usually composed of an insulating material 101 such as glass, ceramic, composite fiber material, silicone rubber, and connecting hardware. After the insulating device 100 is installed on the overhead AC line, it will be subjected to the power frequency voltage of the overhead AC line, and there will be a potential difference between the connecting hardware of the insulating device 100. When the insulating device 100 is subjected to the power frequency voltage, a series of equipotential layers will be formed in the insulating medium and the surrounding space, and the conductive layer 200 is arranged along these equipotential layers. There will be a potential difference between different conductive layers 200 or between the conductive layer 200 and the connecting hardware, and at least two electrodes can be formed. After the insulating device 100 is subjected to voltage, a potential difference will be generated between electrodes of different potentials, and the potential difference between any two electrodes can be used to power the electrical device.

[0045] The above-mentioned overhead AC line power-drawing device sets a conductive layer 200 along the equipotential layer in the insulating medium of the insulating device 100, and uses the conductive layer 200 to form electrodes. There is a potential difference between different equipotential layers. Any two electrodes formed by the potential difference between the equipotential layers of the insulating device 100 are used as power supply devices to supply power. According to the voltage requirements of the power-consuming devices, a suitable equipotential layer can be selected for power drawing. The power drawing is achieved by using the principle of capacitive voltage division, and will not be affected by load changes or lightning impulse current, thereby providing a stable and controllable power supply for the power-consuming devices.

[0046] In one embodiment, the conductive layer 200 is at least one layer, and each conductive layer 200 is arranged along different equipotential layers in the insulating medium. Any conductive layer 200 and the terminal electrode on the insulating device 100 are used to electrically connect the electrical device to supply power to the electrical device.

[0047] The terminal electrode on the insulating device 100 , that is, the connecting hardware of the insulating device 100 , may be a connecting portion such as a screw cap 108 or a ground terminal electrode 103 of the insulating device 100 .

[0048] According to the use requirements, one or more conductive layers 200 can be provided. If one conductive layer 200 is provided, the conductive layer 200 and the terminal electrode on the insulating device 100 constitute two electrodes of the power supply. The conductive layer 200 is used as the first electrode of the power supply; the second electrode is the connecting metal conductor on the insulating device 100. Each equipotential layer corresponds to a voltage level. Based on the different voltage levels of the equipotential layers, the potential difference between each first electrode and the second electrode is derived into a set of AC power supply output voltages.

[0049] In one embodiment, the number of the conductive layers 200 is two or more, each conductive layer 200 is arranged along different equipotential layers in the insulating medium, and any two conductive layers 200 are used to electrically connect an electrical device to supply power to the electrical device.

[0050] The two conductive layers 200 are used as the first electrode and the second electrode of the power supply respectively. Since each equipotential layer corresponds to a voltage level, the potential difference between the first electrode and the second electrode is the output voltage of the power extraction device.

[0051] If two or more conductive layers 200 are provided, any two conductive layers 200 can constitute two electrodes of a power supply to supply power to an electrical device, and any conductive layer 200 and the end electrode on the insulating device 100 can also constitute two electrodes of a power supply to supply power to an electrical device. According to the potential of each conductive layer 200, power supplies of various voltages can be combined to supply power to electrical devices with different voltage requirements, making it more convenient to use.

[0052] In one embodiment, the insulating device 100 is one of a disc insulator, a hollow post insulator, a solid post insulator or a pin insulator.

[0053] The insulating device 100 used in the overhead AC line can be a combination of one or more of a disc insulator, a hollow column insulator, a solid column insulator or a pin insulator. For the auxiliary system power-consuming devices additionally arranged on the overhead AC line, if it is necessary to supply power to the auxiliary system arranged near the ground, a grounding end insulating device in any insulator string of a tower can be replaced with the overhead AC line power-taking insulating device device of the present invention to supply power to the auxiliary system power-consuming devices of the tower; if it is necessary to supply power to the auxiliary system arranged near the phase end, the phase-connecting insulating device of the insulator string of the power-consuming phase of the tower can be replaced with the overhead AC line power-taking insulating device device of the present invention to supply power to the auxiliary system power-consuming devices on the phase line; in the case of multiple power-consuming devices, multiple insulating devices can also be replaced with the overhead AC line power-taking insulating device device of the present invention to supply power separately.

[0054] In one embodiment, if Figure 3 , Figure 4 As shown, the insulating device 100 is a disc-shaped insulator;

[0055] The conductive layer 200 is disposed in the adhesive material between the phase terminal electrode 102 and the insulating material 101 of the disc-shaped insulator.

[0056] The disc-shaped insulator includes a phase-connected electrode 102, an insulating material 101 and a grounding electrode 103. The insulating material 101 is disposed between the grounding electrode 103 and the phase-connected electrode 102. The grounding electrode 103 and the phase-connected electrode 102 are respectively bonded and fixed to the insulating material 101 by bonding materials. If the auxiliary system power device is disposed near the phase end, the two electrodes of the power source formed by the phase-connected electrode 102 and its conductive layer 200 are required to supply power to the power device, so as to provide the appropriate power supply voltage required by the power device.

[0057] In one embodiment, the adhesive material may be cement and its additives, resin, epoxy resin adhesive, cyanoacrylate adhesive, methacrylate anaerobic adhesive, or other insulating adhesive materials. Different insulating devices may be selected according to needs.

[0058] In one embodiment, the edge of the connection head end of the terminal electrode of the insulating device for connecting with the adhesive material is in a curved shape.

[0059] The edge of the connector end of the phase-end electrode 102 can be rounded to a curved surface by a rounding process. Under the action of the high voltage of the phase line of the transmission line, dielectric stress will be generated in the insulating medium, that is, the medium near the tip is prone to over-electric stress. If the edge of the connector end has edges, the electric field strength at the edges is very high. If it is struck by lightning or other overvoltage conditions occur, the insulator will be broken down. The edge of the connector end is rounded, and the potential distribution at the rounded corners is relatively sparse, which can protect the insulator from being easily broken down when overvoltage occurs.

[0060] In one embodiment, the distance between the conductive layer electrode 200 and the surface of the phase-connected terminal electrode 102 is equal everywhere, producing a dielectric layer with uniform thickness, ensuring that the charges at various locations on the surface between the two electrodes are distributed as evenly as possible, and a more stable voltage can be output.

[0061] In one embodiment, two or more conductive layers 200 may be provided, and two of the conductive layers 200 may constitute two electrodes of a power source to supply power to an electrical device.

[0062] In one embodiment, if Figure 5 , Figure 6 As shown, the insulating device 100 is a disc-shaped insulator;

[0063] The conductive layer 200 is disposed between the grounding electrode 103 of the disc-shaped insulator and the insulating material 101 and is fixed by the adhesive material of the disc-shaped insulator.

[0064] The insulating device 100 is arranged near the ground, and the grounding electrode 103 is electrically connected to the tower. At this time, the grounding electrode 103 is the grounding end. For ease of use, the grounding electrode 103 is used as the second electrode, and the first electrode formed by the conductive layer 200 constitutes a power source to supply power to the electrical device.

[0065] In one embodiment, the distance between the conductive layer 200 and the inner wall surface of the ground electrode 103 is equal everywhere, producing a dielectric layer with uniform thickness, ensuring that the dielectric stress at each surface between the two electrodes is distributed as evenly as possible, and a more stable voltage can be output.

[0066] In one embodiment, if Figure 1 , Figure 2 As shown, the insulating device 100 is a pin-type insulator, and the conductive layer 200 is disposed between the screw cap 108 of the pin-type insulator and the insulating material 101 and fixed by the adhesive material of the pin-type insulator.

[0067] The pin insulator includes an insulating material 101, a grounding terminal electrode 103 and a screw cap 108. Figure 1 , Figure 2 As shown, one side of the insulating material 101 is bonded to the screw cap 108 by an adhesive material, and the other side of the insulating material 101 directly supports the phase line through the top wire groove and is fixed by a tie wire. The screw cap 108 is electrically connected to the pole tower through the grounding terminal electrode 103. The screw cap 108 is equivalent to grounding. The conductive layer 200 is electrically connected to the first lead through the contact point 109 to form a charged electrode of the power supply, which can supply power to the ground for the electrical device set near the ground.

[0068] In one embodiment, if Figures 10 to 12 As shown, the insulating device 100 is a solid post insulator, and the conductive layer 200 is disposed within at least one skirt 104 of a jacket 110 of the solid post insulator.

[0069] like Fig.11 The figure shows an overhead AC line power supply device used to supply power to the auxiliary system near the ground. Fig.12 Shown is an overhead AC line power pick-up device used to power a near-phase auxiliary system.

[0070] The core rod of the insulating device 100 is made of epoxy resin and glass fiber as main raw materials with other additives through drawing. The core rod is made of insulating material. The upper and lower ends of the solid column insulator are connected to hardware to form an equipotential layer in the longitudinal direction of the core rod. The skirt 104 of the sheath 110 arranged around the outside of the core rod also has a similar equipotential distribution. The conductive layer is arranged in the skirt, and the conductive layer can be used as an electrode of the power supply. If there is only one conductive layer 200, the conductive layer 200 and one of the end electrodes of the insulating device can be used to form two electrodes of the power supply to supply power to the electrical device. If it is used to supply power to the electrical device arranged in the auxiliary system near the ground, the grounding end electrode of the insulating device connected to the grounding end of the tower can be used as one of the electrodes, and the conductive layer 200 can be used as the other electrode to form a power supply to supply power to the electrical device of the auxiliary system; if it is used to supply power to the electrical device arranged in the auxiliary system near the phase end, the phase end electrode connected to the phase insulating device can be used as one of the electrodes, and the conductive layer 200 can be used as one of the electrodes to form a power supply to supply power to the electrical device of the auxiliary system.

[0071] In one embodiment, two or more conductive layers 200 may be provided on the skirt, or conductive layers 200 may be provided on different skirts. When supplying power to an electrical device, two conductive layers 200 with corresponding potential differences may be selected to form two electrodes of the power supply according to voltage requirements, or a conductive layer 200 with corresponding potential differences and an end electrode of the insulating device 100 may form two electrodes of the power supply.

[0072] In one embodiment, the insulating device 100 is a hollow column insulator, and each conductive layer 200 is disposed in a ring shape inside a hollow tube of the hollow column insulator, forming concentric tubes with different diameters with the hollow tube.

[0073] The conductive layer 200 can be bonded and fixed to the inner wall of the hollow tube of the hollow column insulator by an insulating adhesive material. The conductive layer 200 is arranged in a ring shape and is used as the first electrode of the power supply. The part where the connecting fitting of the hollow column insulator is connected to the hollow tube is also a ring area, which is used as the second electrode of the power supply.

[0074] In one embodiment, two or more conductive layers 200 may be provided. According to the voltage requirement of the electrical device, two conductive layers 200 with corresponding potential difference are selected to form two electrodes of a power source for power supply, or connecting hardware of a conductive layer 200 with corresponding potential difference and an insulating device 100 may form two electrodes of a power source for power supply.

[0075] In one embodiment, the distance between the conductive layer 200 and the outer surface of the electric field adjustment cover in the hollow tube is equal everywhere, so as to ensure that the dielectric stress between the two electrodes is evenly distributed everywhere.

[0076] In one embodiment, if Figures 7 to 9As shown, the insulating device is a hollow column insulator, in which an electric field adjustment cover is arranged. The electric field adjustment cover is electrically connected to the terminal electrode of the hollow column insulator, and an insulating layer 106 is arranged on the surface of the electric field adjustment cover; the conductive layer 200 is fixed on the outer surface of the insulating layer 106.

[0077] An insulating layer is formed between the conductive layer 200 and the outer surface of the electric field adjustment cover 107 by an adhesive material, the conductive layer 200 serves as the first electrode of the power source, and the electric field adjustment cover 107 serves as the second electrode of the power source. The potential difference between the conductive layer 200 and the electric field adjustment cover 107 is used to form a power source to supply power to the electrical device. Figure 8 As shown in FIG. 1 , it is a partial enlarged view of an overhead AC line power supply device used for power supply of a near-ground auxiliary system. The electric field adjustment cover 107 is electrically connected to the grounding hardware and the tower through the grounding electrode 103. The skirt 104 and the insulating tube 105 are the insulating medium of the hollow column insulator. Fig. 9 As shown, it is a partial enlarged view of an overhead AC line power supply device used for power supply of a near-phase-end auxiliary system. The electric field adjustment cover 107 is electrically connected to the phase line through the phase-end electrode 102.

[0078] In one embodiment, one or more conductive layers can be fixed on the conductive layer 200 by adhesive material, and the conductive layers 200 can also be fixed by adhesive material mixed with other insulating materials. Two different conductive layers 200 can serve as two electrodes of a power source to supply power to the auxiliary system electrical device.

[0079] In one embodiment, the conductive layer 200 is any one of a metal conductive layer 200, a non-metal conductive layer 200, or a sintered layer of a conductor combined with a semiconductor glaze.

[0080] The non-metallic conductive layer 200 may be made of a non-metallic conductive material such as graphene.

[0081] In one embodiment, the conductive layer 200 is a mesh conductive layer or a porous ring conductive layer.

[0082] After the adhesive material is bonded, its mechanical properties are similar to the insulating material to which it is attached. The mesh-shaped conductive layer 200 should preferably be selected so as not to greatly affect the overall mechanical strength of the insulator. The overall mechanical strength of the insulator can also be improved by adjusting the design so that both the conductive layer 200 and the adhesive layer are under mechanical compressive stress, thereby preventing them from affecting the overall mechanical strength of the insulator due to the material weakness of being under mechanical tensile stress.

[0083] In one embodiment, the overhead AC line power taking device further comprises:

[0084] A first lead wire, a first end of which is electrically connected to one of the electrodes, and a second end of which is electrically connected to an input port of an electrical device;

[0085] The second lead has a first end electrically connected to another electrode and a second end electrically connected to another input port of the electrical device.

[0086] The first lead and the second lead are electrically connected to the electric device and the first electrode and the second electrode of the power source, and the power source formed by the conductive layer 200 supplies power to the electric device.

[0087] In one embodiment, the first lead and the second lead are further wrapped with an insulating waterproof outer layer 302 for protecting the first lead and the second lead.

[0088] In one embodiment, one end of the first lead and the second lead for electrically connecting to the electrical device is disposed on the same waterproof connector 301 , and is connected to the electrical device via the waterproof connector 301 .

[0089] In one embodiment, the first lead and the second lead are coaxial lines, with a waterproof outer layer 302 provided outside, and a power transmission structure consisting of the insulating waterproof outer layer 302, the grounded first lead, the insulating layer, and the charged second lead is sequentially provided from outside to inside. This structure has better resistance to electric pulse induction. In one embodiment, the first lead is a grounded lead and the second lead is a conductive wire; in another embodiment, the first lead is a conductive wire and the second lead is a grounded lead. In one embodiment, the first lead and the second lead are spirally twisted into a cross wire, and the grounding mesh layer and the waterproof outer layer 302 are wrapped around the outside of the cross wire twisted by the first lead and the second lead, so that the resistance to electric pulse induction is better.

[0090] In one embodiment, since the first lead and the second lead need to pass through the hardware on the adhesive material layer or the insulating device 100, it is necessary to open a through hole on the adhesive material layer or the hardware of the insulating device 100 for the leads to pass through, and a waterproof packaging plug 303 is also provided on the through hole, which can fit tightly with the leads and the through hole to prevent liquids such as rainwater from seeping into the interior of the insulating device through the through hole and affecting the long-term effective operation of the leads and contacts.

[0091] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0092] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An overhead AC line power supply device, characterized in that: include: An insulating device, used for installation between phase conductors of different phases of an overhead AC line or between a phase conductor and a grounding member, wherein the insulating device has an insulating medium, and the insulating medium will naturally form a plurality of equipotential layers after being energized at a power frequency; A conductive layer is provided along the insulating medium of the insulating device in the natural equipotential layer after being energized at the power frequency, and is used to form an electrode; any two electrodes in different potential layers are used to supply power to the electrical device.

2. The overhead AC line power supply device according to claim 1, characterized in that: The conductive layer is at least one layer, and each conductive layer is arranged along different equipotential layers in the insulating medium. Any conductive layer and the terminal electrode on the insulating device are used to electrically connect the electrical device to supply power to the electrical device.

3. The overhead AC line power supply device according to claim 1, characterized in that: The number of the conductive layers is two or more, each of the conductive layers is arranged along different equipotential layers in the insulating medium, and any two conductive layers are used to electrically connect the electrical device to supply power to the electrical device.

4. The overhead AC line power taking device according to claim 2 or 3, characterized in that: The insulating device is one of a disc insulator, a hollow post insulator, a solid post insulator or a pin insulator.

5. The overhead AC line power taking device according to claim 4, characterized in that: The insulating device is a disc-shaped insulator; The conductive layer is arranged in the adhesive material between the phase-connecting terminal electrode and the insulating material of the disc-shaped insulator.

6. The overhead AC line power supply device according to claim 4, characterized in that: The insulating device is a disc-shaped insulator; The conductive layer is disposed in the adhesive material between the ground terminal electrode and the insulating material of the disc-shaped insulator.

7. The overhead AC line power supply device according to claim 4, characterized in that: The insulating device is a pin-type insulator, and the conductive layer is arranged in the adhesive material between the ground terminal electrode and the insulating material of the pin-type insulator.

8. The overhead AC line power taking device according to claim 4, characterized in that: The insulating device is a solid column insulator, and the conductive layer is arranged in the skirt of the solid column insulator.

9. The overhead AC line power taking device according to claim 4, characterized in that: The insulating device is a hollow column insulator, an electric field adjustment cover is arranged inside the hollow column insulator, the electric field adjustment cover is electrically connected to the end electrode of the hollow column insulator, an insulating layer is arranged on the surface of the electric field adjustment cover; the conductive layer is fixed to the outer surface of the insulating layer.

10. The overhead AC line power taking device according to any one of claims 1 to 3, characterized in that: The conductive layer is any one of a metal conductive layer, a non-metal conductive layer or a sintered layer of a conductor combined with a semiconductor glaze.

11. The overhead AC line power taking device according to any one of claims 1 to 3, characterized in that: The conductive layer is a mesh conductive layer or a porous ring conductive layer.

12. The overhead AC line power taking device according to any one of claims 1 to 3, characterized in that: Also includes: A first lead wire, a first end of which is electrically connected to one of the electrodes, and a second end of which is electrically connected to an input port of the electrical device; The second lead has a first end electrically connected to another electrode and a second end electrically connected to another input port of the electrical device.

13. The overhead AC line power taking device according to claim 4, characterized in that: The edge of the connecting head end of the terminal electrode of the insulating device, which is used for connecting with the adhesive material, is in the shape of an arc surface.

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