CN215378577U

CN215378577U - High-voltage power supply system for fault indicator

Info

Publication number: CN215378577U
Application number: CN202121618987.5U
Authority: CN
Inventors: 叶有福
Original assignee: Zhejiang Yobilliton Electric Technology Co ltd
Current assignee: Zhejiang Yobilliton Electric Technology Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-12-31
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses a high-voltage power-taking power supply system for a fault indicator, which comprises a power-taking conversion device and a fault indicator unit which are arranged on a tower, wherein the power-taking conversion device comprises a power-taking hook structure, a power conversion body and a plug structure which are sequentially connected, the power conversion body extends and hooks against a power-taking ring of any one phase high-voltage wire A, B, C through the power-taking hook structure to take power, then an input high-voltage power supply is converted into an output low-voltage power supply, and the fault indicator unit and the power conversion body are in power-on connection through the matching of the plug structure and a plug female seat. The intelligent development of the intelligent power distribution network is facilitated.

Description

High-voltage power supply system for fault indicator

Technical Field

The utility model relates to the technical field of high-voltage electricity taking, in particular to a high-voltage electricity taking power supply system for a fault indicator.

Background

The power distribution network is an important basis of the energy Internet and is a key link influencing the power supply service level. With the mass access of electric vehicles, distributed energy sources, micro-grids, energy storage devices and other facilities, the development of power markets and the emergence of various power consumption requirements, higher requirements are put forward on the safety, economy and adaptability of power distribution networks. An up-to-date modern power distribution network with high reliability, interactive friendliness, economy and high efficiency must be created. The intelligent power grid is established on the basis of an integrated high-speed bidirectional communication network, the operation of the intelligent power grid needs to monitor the operation state of a power system in real time, including the operation states of various power equipment, and then the operation state is fed back to a control system, and the control system sends out an instruction after making an analysis so as to realize intelligent operation. Therefore, a large number of automatic and informationized intelligent devices and communication terminals are put into the smart grid, feedback and control circuits of the operation states of the intelligent devices need to be driven by a power supply, the power supply voltage is as small as several volts and as large as dozens of volts, and high-voltage alternating current cannot be directly utilized.

For example, a fault indicator of a smart terminal is installed on a distribution line, and the fault indicator is simply a fault current detection circulation device installed on an overhead distribution line. The fault indicating device with the power line can rapidly and automatically alarm after the distribution line breaks down, so that a worker can more rapidly find the specific position of the line fault in the area to find out the fault, and generally has the functions of short circuit identification and ground fault identification.

The existing fault indicator is installed on a transmission line tower and needs to be driven by a low-voltage power supply, and due to the limitation of geographical conditions or insulation conditions, the low-voltage power supply is rarely arranged near the transmission line tower. The common method is that a current transformer is adopted to take power from an overhead line and then transmit the power to a fault indicator arranged on a tower, but the current transformer has large installation volume and inconvenient installation and maintenance, and the acquired electric energy is difficult to transmit to the tower. In addition, a solar battery is arranged on a tower to supply power for the fault indicator, and because the solar power supply can only generate large electric energy when sunlight exists in the daytime, solar energy is difficult to obtain in rainy days or at night, and because secondary equipment needs to supply power continuously, an energy storage device (such as a battery) must be added to the solar energy to realize the solar energy. The solar photovoltaic panel is influenced by the environment, the power generation efficiency is continuously reduced, meanwhile, the service life of energy storage devices such as batteries is short, the solar photovoltaic panel is required to be maintained or the batteries are required to be replaced in 2 years generally, the maintenance workload is high, the cost is high, the online rate of terminal equipment such as a fault indicator is low, and the intelligent development of a power distribution network is not facilitated.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problems that the fault indicator in the prior art is supplied with power by solar energy and an energy storage battery, is greatly limited by environmental and climate factors, has high setting cost, has low online rate and affects normal work.

In order to solve the above technical problem, the present invention provides a high voltage power supply system for a fault indicator, including:

the tower is provided with an A-phase high-voltage wire, a B-phase high-voltage wire and a C-phase high-voltage wire in a erected mode, and the A-phase high-voltage wire or the B-phase high-voltage wire or the C-phase high-voltage wire is provided with a power taking ring;

the power-taking conversion device is arranged on the tower through a support structure and comprises a power conversion body, a power-taking hook structure and a plug structure, wherein the power conversion body mainly comprises a high-voltage capacitor structure and a transformer structure; the power supply conversion body is connected with the power taking hook structure to form a straight rod, and the power taking hook structure extends to hook and abuts against a power taking ring of any phase of high-voltage line A, B, C; the power supply conversion body converts a high-voltage power supply input by an input end into a low-voltage power supply output by an output end through the matching of the high-voltage capacitor structure and the voltage device structure;

and the power-taking conversion device is matched and spliced with a female plug seat of the fault indicator unit through a plug structure.

As a preferred scheme, the electricity taking hook structure comprises a hook part and a conductive rod, wherein the hook part is hooked on the electricity taking ring, and the conductive rod is connected with the hook part and the input end of the power supply conversion body.

As a preferable scheme, the power conversion body comprises an insulating casing adapted to accommodate the high-voltage capacitor structure and the voltage regulator structure, the insulating casing comprises an upper port provided with the input end and a lower port provided with the output end, and the conductive rod is inserted into the upper port and is tightly connected with the input end.

Preferably, the plug structure comprises a fixed loop bar inserted in the lower port, and an aviation plug penetrating through the fixed loop bar to connect with the output end of the power conversion body.

As a preferred scheme, the support structure comprises a cross arm perpendicular to the tower, and a hoop component for tightly mounting the cross arm on the tower, wherein two strip-shaped connecting holes are formed in the cross arm, and two ends of the hoop component penetrate into the two connecting holes and are locked by nuts; the electricity-taking conversion device is arranged at one end of the cross arm far away from the pole tower through a fixed sleeve rod.

Preferably, a clamping sleeve structure for fastening the fixed loop bar is mounted at one end of the cross arm, and one end of the fixed loop bar is fastened between the clamping sleeve structure and the cross arm.

As a preferred scheme, the electricity taking hook structure, the power supply conversion body and the fixed sleeve rod are sequentially connected in a straight line and are arranged in parallel and opposite to the tower.

As a preferred scheme, the input end comprises an input terminal piece fixed at the upper port, one end of the high-voltage capacitor structure is connected with the input terminal piece, and the other end of the high-voltage capacitor structure is connected to one end of the input winding of the voltage transformer structure;

the output end comprises two output terminal pieces and a grounding terminal piece which are arranged at the lower port at intervals, the other end of the input winding of the voltage transformer structure is connected to the grounding terminal piece, the two ends of the output winding of the voltage transformer structure are respectively connected with the two output terminal pieces, and the output terminal pieces are connected with the aviation plug.

Preferably, the ground terminal member is connected to the ground along the tower by a ground structure.

As a preferred scheme, the fault indicator unit is arranged below the power-taking conversion device, and the connecting line of the aviation plug penetrates out of the fixed loop bar and extends to the fault indicator unit along the cross arm and the tower.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a high-voltage electricity-taking power supply system for a fault indicator, which is characterized in that an electricity-taking conversion device and a fault indicator unit are respectively arranged on a pole tower, the electricity-taking conversion device is hung on an electricity-taking ring of any phase high-voltage wire A, B, C through an electricity-taking hook structure and transmits the obtained high-voltage power supply to a power conversion body, the power conversion body converts the input high-voltage power supply into an output low-voltage power supply through the matching of a high-voltage capacitor structure and a voltage device structure and is connected with the fault indicator unit through a plug structure, so that the low-voltage power supply is provided for the fault indicator unit, the electricity-taking conversion device is in a straight rod structure design, has small volume and light weight, is convenient and quick to install on the pole tower, and adopts the technical scheme to provide continuous and stable low-voltage power supply for the fault indicator unit through a voltage reduction and electricity taking mode from the high-voltage wire through the electricity-taking conversion device, the quick erection joint is realized through the cooperation form of plug and socket between the two, line easy operation, and it is also comparatively convenient to install and overhaul, avoids adopting traditional solar energy and energy storage battery's power supply mode again simultaneously, reduce cost to guarantee fault indicator unit's long-term stable work, whether can all-weather real-time supervision distribution lines break down, promote the security performance of distribution network, be favorable to promoting intelligent development of intelligent power distribution network.

2. The utility model provides a high-voltage electricity-taking power supply system for a fault indicator, wherein an electricity-taking conversion device is arranged on a cross arm through a fixed sleeve rod, the fixed sleeve rod is made of an insulating material, the structural strength is high, the whole power supply conversion body can be supported, the installation and support effects on the power supply conversion body can be realized, and the lead and protection effects on a connecting line of an aviation plug can also be realized.

3. According to the high-voltage power-taking power supply system for the fault indicator, the two strip-shaped connecting holes are formed in the cross arm, and the two ends of the hoop component penetrate into the two connecting holes and are locked through the nuts, so that the cross arm is firmly fastened on the tower, a position required for mounting is provided for the power-taking conversion device, the installation distance between the two ends of the hoop component can be adaptively adjusted through the structural design of the strip-shaped connecting holes, and the high-voltage power-taking power supply system is more convenient to mount and use, practical and reliable.

4. The utility model provides a high-voltage power-taking power supply system for a fault indicator, wherein the other end of an input winding of a transformer structure is connected to a grounding terminal piece, the grounding terminal piece is connected to the ground along a tower through a ground wire structure, so that the grounding protection of a power-taking conversion device is realized, and meanwhile, a low-voltage power supply output by the transformer structure is provided for a fault indicator unit through an aviation plug according to the connection of an output terminal piece and the aviation plug, so that the stable work of the fault indicator unit is ensured.

Drawings

In order to more clearly illustrate the detailed description of the utility model or the technical solutions in the prior art, the drawings that are needed in the detailed description of the utility model or the prior art will be briefly described below.

FIG. 1 is a schematic diagram of an installation structure of a high voltage power supply system for a fault indicator according to the present invention;

fig. 2 is a schematic diagram of a partially enlarged structure of the power conversion body shown in fig. 1;

FIG. 3 is an enlarged view of a portion of the current-taking hook structure shown in FIG. 1;

FIG. 4 is a schematic diagram of an internal structure of the power conversion body according to the present invention;

description of reference numerals: 1. a power conversion body; 10. an insulating housing; 101. an upper port; 102. a lower port; 11. a high voltage capacitor structure; 12. a transformer structure; 13. an input terminal member; 14. an output terminal member; 15. a ground terminal member; 2. a power taking hook structure; 21. a hook member; 211. a hook body; 212. sliding the clamping block; 213. a spring structure; 22. a conductive rod; 3. fixing the loop bar; 4. an aviation plug; 5. a pole tower; 51. a phase A high-voltage line; 52. a B-phase high-voltage line; 53. a C-phase high-voltage line; 6. taking a power ring; 7. a fault indicator unit; 8. a cross arm; 81. a hoop component; 83. connecting holes; 84. a card sleeve structure; 9. a ground structure.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

The present embodiment is described in detail below with reference to the accompanying drawings:

the present embodiment provides a high voltage power supply system for a fault indicator as shown in fig. 1 to 4, including:

a tower 5, on which an a-phase high-voltage line 51, a B-phase high-voltage line 52 and a C-phase high-voltage line 53 are erected, wherein a power-taking ring 6 is arranged on the a-phase high-voltage line 51, the B-phase high-voltage line 52 or the C-phase high-voltage line 53;

the power-taking conversion device is arranged on the tower 5 through a support structure and comprises a power conversion body 1 mainly composed of a high-voltage capacitor structure 11 and a transformer structure 12, a power-taking hook structure 2 electrically connected to the input end of the power conversion body 1, and a plug structure electrically connected to the output end of the power conversion body 1; the power supply conversion body 1 is connected with the power taking hook structure 2 to form a straight rod, and the power taking hook structure 2 extends to hook and abut against the power taking ring 6 of any phase of high-voltage wire A, B, C; the power conversion body 1 converts a high-voltage power supply input from an input end into a low-voltage power supply output from an output end through the matching of the high-voltage capacitor structure 11 and the voltage device structure;

and the fault indicator unit 7 is arranged on the tower 5 through a support structure, and the power-taking conversion device is connected with a plug female seat of the fault indicator unit 7 in a matched and inserted manner through a plug structure.

The above-mentioned embodiment is the core technical solution of this embodiment, respectively installing the power-taking conversion device and the fault indicator unit 7 on the tower 5, the power-taking conversion device is hung on the power-taking ring 6 of any phase high-voltage line A, B, C through the power-taking hook structure 2, transmitting the obtained high-voltage power to the power conversion body 1, the power conversion body 1 converts the input high-voltage power into the output low-voltage power through the matching of the high-voltage capacitor structure 11 and the voltage device structure, and connects with the fault indicator unit 7 through the plug structure, thereby realizing the provision of the low-voltage power for the fault indicator unit 7, the power-taking conversion device is designed in a straight-rod structure, has small volume and light weight, and is convenient and fast to install on the tower 5, by adopting the technical solution, the fault indicator unit 7 is provided with a continuous and stable low-voltage power through the power-taking conversion device in a voltage-reducing and power-taking manner from the high-voltage line, the quick erection joint is realized through the cooperation form of plug and socket between the two, line easy operation, and it is also comparatively convenient to install and overhaul, avoids adopting traditional solar energy and energy storage battery's power supply mode again simultaneously, and reduce cost to ensured fault indicator unit 7's long-term stable work, whether can all-weather real-time supervision distribution lines break down, promoted the security performance of distribution network, be favorable to promoting intelligent development of intelligent power distribution network.

The specific structure of the power-taking conversion device is described in detail below with reference to fig. 1 and 4:

the power conversion body 1 comprises a suitable accommodating part, an insulating housing 10 of the high-voltage capacitor structure 11 and the voltage device structure is arranged, the insulating housing 10 comprises an upper port 101 of an input end and a lower port 102 of an output end, the input end and the output end are respectively electrically connected with the high-voltage capacitor structure 11 and the voltage device structure, the high-voltage capacitor structure 11 and the voltage device structure are arranged in series, an insulating protection effect is achieved on the high-voltage capacitor structure 11, the voltage device structure, the input end, the output end and other electrical components through the insulating housing 10, exposure is prevented, and the installation and use of an operator are guaranteed as well as the safety of the power conversion body 1.

As a specific configuration, the input end includes an input terminal 13 fixed at the upper port 101, one end of the high-voltage capacitor structure 11 is connected to the input terminal 13, and the other end thereof is connected to one end of the input winding of the voltage transformer structure; the output end comprises two output terminal pieces 14 and a grounding terminal piece 15 which are arranged at the lower port 102 at intervals, the other end of the input winding of the voltage device structure is connected to the grounding terminal piece 15, two ends of the output winding of the voltage device structure are respectively connected with the two output terminal pieces 14, and the output terminal pieces 14 are connected with the plug structure. Due to the structural arrangement, an electrical connection relation is formed among the input end, the high-voltage capacitor structure 11, the voltage regulator structure and the output end, the grounding terminal piece 15 is connected to the ground along the pole tower 5 through the ground wire structure, so that the grounding protection arrangement of the power-taking conversion device is realized, the use safety is guaranteed, and a low-voltage power supply is output outwards through the two output terminal pieces 14, so that the low-voltage power supply output by the transformer structure 12 is provided for the fault indicator unit 7 through the plug structure, therefore, the fault indicator unit 7 can be powered on as long as the plug part is correspondingly plugged into a socket on the fault indicator unit 7, and the stable work of the fault indicator unit 7 is guaranteed.

In this embodiment, get electric hook structure 2 including colluding support get the hook part 21 on the electricity ring 6, and connect hook part 21 with the conducting rod 22 of the input of power conversion body 1, conducting rod 22 inserts in last port 101 with the input fastening links to each other, just so realizes power conversion body 1 with get the installation between the electric hook structure 2 fixed, the installation is simple and convenient, and the cooperation is fixed reliable. As a specific structure, referring to fig. 3, the hook member 21 includes a hook body 211 connected to the other end of the conductive rod 22 through a screw structure, a sliding latch 212 movably disposed on the hook body 211, and a receiving groove formed by the hook body 211 and the sliding latch 212, one end of the conductive rod 22 is connected to the input end, and the other end thereof passes through the hook body 211 to be connected to the sliding latch 212, and a spring structure 213 is disposed between the sliding latch 212 and the conductive rod 22, the conductive rod 22 can move relative to the hook body 211 through the screw structure when rotating, and presses the spring structure 213 when driving the sliding latch 212 to move synchronously, the pressing force between the sliding latch 212 and the hook body 211 can be increased through the spring structure 213, so as to prevent the power take-off ring 6 from the receiving groove between the sliding latch 212 and the hook body 211, the installation is stable and reliable.

According to the fact that the power-taking conversion device and the fault indicator unit 7 are both installed on the tower 5 through a support structure, specifically, as shown in fig. 2, the support structure comprises a cross arm 8 perpendicular to the tower 5 and a hoop component 81 for tightly installing the cross arm 8 on the tower 5, two strip-shaped connection holes 83 are formed in the cross arm 8, two ends of the hoop component 81 penetrate into the two connection holes 83 and are locked through nuts, so that the cross arm 8 is firmly fastened on the tower 5, a position required for installing the power-taking conversion device is provided, the strip-shaped connection holes 83 are designed to be capable of adaptively adjusting installation distances of two ends of the hoop component 81, and installation and use are more convenient, is practical and reliable.

As a preferred embodiment, as shown in fig. 1-2. The plug structure includes pegging graft fixed loop bar 3 in lower port 102, and passes fixed loop bar 3 is in order to connect the circular connector 4 of the output of power conversion body 1, it installs to get electric conversion equipment through fixed loop bar 3 cross arm 8 keeps away from on one end of shaft tower 5, wherein, fault indicator unit 7 sets up and is located get electric conversion equipment's below, the connecting wire of circular connector 4 is worn out behind fixed loop bar 3, and along cross arm 8 and shaft tower 5 extend to fault indicator unit 7 department, correspond on the fault indicator unit 7 be equipped with the female seat of plug that circular connector 4 cooperation was pegged graft. Through the structure setting, this kind of fixed loop bar 3 is made by insulating material, and its structural strength is high, can support whole power conversion body 1, it is right both power conversion body 1 plays the effect of erection bracing, can play lead wire and guard action to the connecting wire of aviation plug 4 again, the electricity conversion equipment who designs like this realizes electric connection through aviation plug 4 on can the assorted plug female seat that inserts fault indicator unit 7, this kind of aviation plug 4's contact reliability is high, it is good to connect the leakproofness, corrosion-resistant, has fine electric property and mechanical properties, it is all comparatively convenient to walk the wiring on shaft tower 5, simplify connection structure, realize installing the circular telegram fast.

In order to ensure the installation stability between the fixed loop bar 3 and the cross arm 8, a clamping sleeve structure 84 for fastening the fixed loop bar 3 is installed on one end of the cross arm 8, and one end of the fixed loop bar 3 is tightly installed between the clamping sleeve structure 84 and the cross arm 8. As shown in fig. 1, after the equipment is accomplished get electric hook structure 2 the power conversion body 1 fixed loop bar 3 is a straight line and links to each other in proper order, and with the parallel relative setting of shaft tower 5, it is thus clear that get electric conversion equipment has longer installation length, and is small, and weight is also lighter, can be comparatively light with couple group structure hang and establish the high-voltage conductor on realize getting the electric operation, then will fixed loop bar 3 fastening is in on cross arm 8, it is right power conversion body 1 plays the installation supporting role, can accomplish the circular telegram connecting piece on being connected to fault indicator unit 7 through aviation plug 4 at last to provide stable continuous low voltage power supply for fault indicator unit 7 through getting electric conversion equipment, easy operation is convenient, improves the installation effectiveness.

The working principle of the power-taking conversion device is explained as follows: referring to fig. 4, the high voltage of the power grid is connected to the input end of the power conversion body 1 through the power-taking structure, the input end is connected to one end of the high-voltage capacitor structure 11, the high-voltage capacitor structure 11 is connected in series with the transformer structure 12, that is, the other end of the high-voltage capacitor structure 11 is connected to one end of the input winding of the transformer structure 12, and the other end of the input winding of the transformer structure 12 is connected to the ground terminal 15 of the output end, the ground terminal 15 is connected to the ground to realize ground protection, and the two ends of the output winding of the transformer are respectively connected to the two output terminal 14 of the output end to realize the output of the low-voltage power source, during the conversion process of the low-voltage power source, the combined connection of the high-voltage capacitor structure 11 and the transformer structure 12 plays a role of reducing voltage and limiting current, according to the large capacitive reactance of the high-voltage capacitor, the high voltage plays a role of limiting current when passing through the high-voltage capacitor structure 11, the voltage applied to the input winding of the transformer is not high, the output winding of the transformer is less according to the design requirement, the transformer is protected, the purpose that the transformer outputs low voltage is achieved, the effect that the capacitor power-taking power supply device is changed from a high-voltage power supply to a low-voltage power supply is achieved, and therefore the low-voltage power supply can be continuously and stably provided for intelligent equipment and communication terminals in a power distribution network.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A high voltage power supply system for a fault indicator, comprising:

the tower (5) is provided with an A-phase high-voltage wire (51), a B-phase high-voltage wire (52) and a C-phase high-voltage wire (53) in an erected mode, and the A-phase high-voltage wire (51), the B-phase high-voltage wire (52) or the C-phase high-voltage wire (53) is provided with a power taking ring (6);

the power-taking conversion device is arranged on the tower (5) through a support structure and comprises a power conversion body (1) mainly composed of a high-voltage capacitor structure (11) and a transformer structure (12), a power-taking hook structure (2) electrically connected to the input end of the power conversion body (1) and a plug structure electrically connected to the output end of the power conversion body (1); the power supply conversion body (1) is connected with the power taking hook structure (2) to form a straight rod, and the power taking hook structure (2) extends to hook and abut against a power taking ring (6) of any phase of high-voltage wire A, B, C; the power supply conversion body (1) converts a high-voltage power supply input by an input end into a low-voltage power supply output by an output end through the matching of the high-voltage capacitor structure (11) and the voltage device structure;

and the fault indicator unit (7) is arranged on the tower (5) through a support structure, and the power-taking conversion device is connected with a plug female seat of the fault indicator unit (7) in a matched and inserted manner through a plug structure.

2. The high voltage power supply system for the fault indicator according to claim 1, characterized in that: the power supply conversion body (1) comprises an insulating housing (10) suitable for containing the high-voltage capacitor structure (11) and the voltage device structure, the insulating housing (10) comprises an upper port (101) provided with the input end and a lower port (102) provided with the output end, the input end and the output end are respectively electrically connected with the high-voltage capacitor structure (11) and the voltage device structure, and the high-voltage capacitor structure (11) and the voltage device structure are arranged in series.

3. The high voltage power supply system for the fault indicator according to claim 2, characterized in that: get electric hook structure (2) including colluding support get electric ring (6) on couple part (21), and connect couple part (21) with conducting rod (22) of the input of power conversion body (1), conducting rod (22) insert in last port (101) with the input fastening links to each other.

4. The high voltage power supply system for the fault indicator according to claim 3, wherein: the plug structure comprises a fixed loop bar (3) inserted in the lower port (102), and an aviation plug (4) penetrating through the fixed loop bar (3) to be connected with the output end of the power conversion body (1).

5. The high voltage power supply system for the fault indicator according to claim 4, wherein: the support structure comprises a cross arm (8) perpendicular to the tower (5) and a hoop component (81) for tightly mounting the cross arm (8) on the tower (5), wherein two strip-shaped connecting holes (83) are formed in the cross arm (8), and two ends of the hoop component (81) penetrate into the two connecting holes (83) and are locked through nuts; the electricity-taking conversion device is installed at one end, far away from the pole tower (5), of the cross arm (8) through a fixed sleeve rod (3).

6. The high voltage power supply system for the fault indicator according to claim 5, wherein: one end of the cross arm (8) is provided with a clamping sleeve structure (84) used for fastening the fixed loop bar (3), and one end of the fixed loop bar (3) is fastened and installed between the clamping sleeve structure (84) and the cross arm (8).

7. The high voltage power supply system for the fault indicator of claim 6, wherein: the electricity taking hook structure (2), the power supply conversion body (1) and the fixed sleeve rod (3) are sequentially connected in a straight line and are arranged oppositely and in parallel with the pole tower (5).

8. The high-voltage power supply system for the fault indicator according to any one of claims 2 to 7, wherein: the input end comprises an input terminal piece (13) fixed at the upper port (101), one end of the high-voltage capacitor structure (11) is connected with the input terminal piece (13), and the other end of the high-voltage capacitor structure is connected to one end of the input winding of the transformer structure;

the output end comprises two output terminal pieces (14) and a grounding terminal piece (15) which are arranged at the lower port (102) at intervals, the other end of the input winding of the transformer structure is connected to the grounding terminal piece (15), two ends of the output winding of the transformer structure are respectively connected with the two output terminal pieces (14), and the output terminal pieces (14) are connected with the plug structure.

9. The high voltage power supply system for the fault indicator of claim 8, wherein: the earth terminal piece (15) is connected to the ground along the tower (5) by means of a ground structure.

10. The high voltage power supply system for the fault indicator according to claim 5, wherein: the fault indicator unit (7) is arranged below the power-taking conversion device, and a connecting line of the aviation plug (4) penetrates out of the rear portion of the fixed sleeve rod (3) and extends to the position of the fault indicator unit (7) along the cross arm (8) and the tower (5).