Overhead line electricity-taking current transformer

Abstract

The invention relates to the field of power distribution networks, in particular to an overhead line power-taking current transformer which comprises a framework, the framework comprises a left framework and a right framework, enameled wires are wound on the left framework and the right framework, and initial ends and tail ends are reserved on the enameled wires on the two frameworks. And the initial end and the tail end of the enameled wire are connected with the initial end and the tail end of the enameled wire of the other corresponding framework through connecting wires. The iron core is arranged in the framework in a pincerlike winding mode, enameled wires are wound on the two sides, current signal collection can be increased to the maximum extent, the two coils are connected through a middle rotating shaft by means of a short-circuit wire, and the risk of power failure caused by damage of a connecting wire in the product installation process is prevented; and the coil is protected through the left and right protective plates on the outer side, so that the enameled wire is prevented from being damaged in transfer and assembly processes.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution network, and in particular to an overhead line power taking current transformer. Background Art

[0002] Overhead line faults have a relatively large impact on the safety of the power grid system, equipment safety and power supply reliability. If an overhead line fails, the current signal collected by the power-taking current transformer in the line will be inaccurate, resulting in the equipment being unable to promptly troubleshoot the fault and eliminate hidden fault hazards, which can easily cause the fault to expand and ultimately lead to a large-scale power outage. Summary of the invention

[0003] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the description and other drawings of the description.

[0004] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an overhead line power supply current transformer to solve the existing problems.

[0005] To achieve the above-mentioned purpose, the technical solution of the present invention is: a current transformer for taking power from an overhead line, comprising a frame, the frame comprising a left frame and a right frame, the left frame and the right frame are both wound with enameled wire, and the enameled wire on the two frames has an initial end and a terminal end, the initial end and the terminal end of the enameled wire are connected to the initial end and the terminal end of the enameled wire of the corresponding other frame through a connecting wire, and then led out, the surface of the frame is wrapped with insulating tape, the frame is installed with a left guard plate and a right guard plate, and the left frame and the right frame are both provided with matching iron cores.

[0006] In some embodiments, dust covers are provided at both ends of the frame.

[0007] In some embodiments, the left guard plate and the right guard plate are hinged at one end and connected by a first bolt at the other end.

[0008] In some embodiments, gaskets are provided on the outer walls of the core.

[0009] In some embodiments, the end faces of the core are numbered.

[0010] In some embodiments, both ends of the left guard plate and the right guard plate are connected to the frame by second bolts.

[0011] By adopting the above-mentioned technical scheme, the beneficial effects of the present invention are as follows: the present invention arranges an iron core inside the skeleton and adopts a clamp-shaped winding method, and both sides are wound with enameled wires, which can maximize the increase of current signal acquisition and use a short-circuit wire to connect the two coils through the middle rotating shaft to prevent the risk of power outage caused by damage to the connecting wire during product installation, and the coil is protected by left and right guard plates on the outside to prevent the enameled wire from being damaged during transportation and assembly.

[0012] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0013] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiment described with reference to various figures and drawings.

[0014] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation of the present invention.

[0016] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a mutual inductor according to some embodiments of the present invention; Figure 2 1 is a structural cross-sectional view of a mutual inductor according to some embodiments of the present invention. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not used to limit the present invention.

[0020] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0022] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0023] The specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] Reference Figure 1 and 2The present invention provides an overhead line power current transformer, including a skeleton 1, the skeleton 1 including a left skeleton 2 and a right skeleton 3, the left skeleton 2 and the right skeleton 3 are both wound with enameled wires 4, and the enameled wires 4 on the two skeletons have an initial end 41 and a terminal end 42, the initial end 41 and the terminal end 42 of the enameled wire 4 are connected to the initial end 41 and the terminal end 42 of the enameled wire 4 of the corresponding other skeleton through a connecting wire 43, and then are led out, an insulating tape 11 is wound on the surface of the skeleton 1, a left guard plate 12 and a right guard plate 13 are installed on the skeleton 1, and matching iron cores 14 are provided in the left skeleton 2 and the right skeleton 3.

[0025] The iron core 14 is arranged inside the skeleton 2 and adopts a clamp-shaped winding method. The enameled wire is wound on both sides, which can maximize the current signal acquisition. The two coils are connected by a short-circuit wire through the middle shaft to prevent the risk of power outage caused by damage to the connecting wire during product installation. The coil is protected by left and right guard plates on the outside to prevent the enameled wire 4 from being damaged during transportation and assembly.

[0026] According to some embodiments of the present invention, optionally, both ends of the frame 1 are provided with dust covers 15. The dust covers 15 are installed on the upper and lower sides of the coil to effectively reduce dust from entering the interior, which may cause inaccurate current signal collection during line operation.

[0027] According to some embodiments of the present invention, optionally, the left guard plate 12 and the right guard plate 13 are hinged at one end and connected at the other end by a first bolt 16. In order to buckle it up to ensure connectivity.

[0028] According to some embodiments of the present invention, the outer wall of the core 14 is optionally provided with a gasket 17. The left and right cores 24 are padded with the gasket 17 on the back to ensure that the two core end faces are attached together after the product is assembled to prevent the core from leaking magnetic flux and making abnormal noise during operation due to gaps in the end faces.

[0029] According to some embodiments of the present invention, optionally, the end faces of the core 14 are all provided with numbers 18. When assembling, the numbers 18 are at the same end to ensure a higher power collection accuracy of the coil.

[0030] According to some embodiments of the present invention, optionally, both ends of the left guard plate 12 and the right guard plate 13 are connected to the frame 1 by second bolts 19 to ensure connectivity and prevent power outages caused by separation.

[0031] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0032] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0033] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will understand that the present invention can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A current transformer for taking power from an overhead line, characterized in that: include: A skeleton, comprising a left skeleton and a right skeleton, both of which are wound with enameled wires, and the enameled wires on the two skeletons have initial ends and terminal ends, the initial ends and the terminal ends of the enameled wires are connected to the initial ends and the terminal ends of the enameled wires of the corresponding other skeleton through connecting wires, and then led out, an insulating tape is wound on the surface of the skeleton, a left guard plate and a right guard plate are installed on the skeleton, and matching iron cores are provided inside the left skeleton and the right skeleton.

2. The overhead line current transformer according to claim 1, characterized in that: Dust covers are provided at both ends of the frame.

3. The overhead line current transformer according to claim 1, characterized in that: The left guard plate and the right guard plate are hinged at one end and connected at the other end by a first bolt.

4. The overhead line current transformer according to claim 1, characterized in that: The outer wall of the iron core is provided with a gasket.

5. The overhead line current transformer according to claim 1, characterized in that: The end faces of the core are all numbered.

6. The overhead line current transformer according to claim 3, characterized in that: Both ends of the left guard plate and the right guard plate are connected to the frame through second bolts.

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