CN209029879U - A ground wire energy extraction device - Google Patents

Abstract

A kind of ground wire energy taking device, it is installed at optical power grounded waveguide continued access segmentation, including adapter, energy converter and remaining cable frame, it further include multiple insulating supportings, adapter is used for continued access optical power grounded waveguide inner fiber, and remaining cable frame all has insulation system and be insulated on shaft tower for collecting too long optical power grounded waveguide, the adapter and remaining cable frame, energy converter is mounted on adapter, while energy converter seals in the steel strand wires of optical power grounded waveguide；The insulating supporting is mounted on the tower top of shaft tower, for drawing lower along head of mast insulation by optical power grounded waveguide and accessing the adapter or remaining cable frame.The optical fiber splicing device that the utility model can substitute original optical power grounded waveguide extracts electric energy and completes the continued access of optical fiber；Electric energy is obtained from ground wire as on-Line Monitor Device power supply using the energy converter for sealing in optical power grounded waveguide, and can reduce the loss of optical power grounded waveguide；Furthermore it can control the earthing mode of optical power grounded waveguide at segmentation.

Description

A ground wire energy extraction device

technical field

The utility model belongs to the field of power transmission line design, in particular to a ground wire energy obtaining device.

Background technique

At present, two ground wires are often used in transmission lines in my country, one common ground wire and one optical fiber composite ground wire (OPGW). OPGW is to place the optical fiber in the ground wire of the overhead high-voltage transmission line to form the optical fiber communication network on the transmission line. This structure has the dual functions of ground wire and communication.

Under normal operation, there is electrostatic induction and electromagnetic induction between the wire and the ground wire. Since the ground wires are all grounded, the influence of electrostatic induction is small. The electromagnetic induction voltage between the ground wires is related to the distance between the ground wires and the current of the phase wires. On the OPGW grounded one by one, a current will be generated between the OPGW and the ground loop, and this current will cause relatively large power loss.

Most of the transmission lines are equipped with various online monitoring devices, which are used to monitor conductor current, voltage, line faults, line galloping, breeze vibration, tower tilt, tree growth in transmission corridors, and construction conditions. Some of these monitoring devices are directly installed on the tower, and use the solar energy and the battery to supply power. Since the solar energy is greatly affected by the light intensity, it cannot work at night and during the continuous rain. At the same time, the battery life is low due to frequent charging and discharging. , the lack of high stability, long-life power supply, which seriously limits the use of online monitoring devices installed on towers.

To sum up, the loss of the ground wire in the transmission line and the power supply of the online monitoring device are two problems that need to be solved in the current transmission line.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is that, aiming at the above-mentioned deficiencies in the prior art, a ground wire energy extraction device is provided. The device is mainly installed at the OPGW subsection and can replace the original OPGW optical fiber splicing device to extract electric energy. And complete the continuation of the optical fiber, can use the power converter serially connected to the OPGW to obtain power from the ground wire to supply power to the online monitoring device, and can reduce the loss of the OPGW, in addition, the device can control the grounding method of the OPGW at the segment.

The technical scheme adopted by the present utility model for solving the above-mentioned technical problems is:

The utility model relates to a ground wire energy extracting device, which is installed at the connecting segment of the optical fiber composite ground wire. The inner optical fiber and the redundant cable rack are used to collect the excessively long optical fiber composite ground wires. Both the connector and the redundant cable rack have an insulating structure and are installed on the tower in isolation. The power converter is installed on the connector, and the power The converter is connected in series with the steel strand of the optical fiber composite ground wire; the insulating support is installed on the tower top of the tower, and is used to lead the optical fiber composite ground wire down along the top of the tower and connect to the splice or cable rack.

According to the above solution, the splice includes two upper and lower fusion splicing units and an isolation insulator with fiber segments pre-installed inside, the two fusion splicing units are respectively connected to two ends of the isolation insulator, and the optical fibers inside the isolation insulator The two ends of the segment protrude into the inner side of the upper and lower fusion splicing units respectively, and the two fusion splicing units are respectively equipped with fixing clamps, which are used to fix the optical fiber composite ground wire and introduce the optical fiber of the optical fiber composite ground wire into the fusion splicing unit. In order to be welded with the optical fiber section inside the insulator, and at the same time, the fixing fixture is provided with an output terminal, and the output terminal is connected with the steel strand of the optical fiber composite ground wire, and the steel strand is connected with the power converter.

According to the above scheme, the bottom surface of the fusion splicing unit at the lower part of the splice is provided with an insulating base, and the splice is installed on the tower through the insulating base.

According to the above scheme, the optical fiber and the steel strand are stripped out of the optical fiber composite ground wire inside the fixing fixture, the stripped optical fiber enters the fusion splicing unit, and is spliced with both ends of the optical fiber segment preset inside the isolation insulator to realize optical path splicing ; The stripped steel strand is connected with the output terminal on the fixing fixture, the output terminal is connected with the electric energy converter, and the electric energy converter is serially inserted into the optical fiber composite ground wire.

According to the above scheme, the power converter includes an input terminal, a protection circuit, a power electronic circuit, a battery, an aviation plug, an antenna, a processor and a controllable grounding device, and the input terminal is connected with the output terminal of the fixing fixture, and the protection circuit One end is connected to the input terminal, the other end is connected to the power electronic circuit, the power electronic circuit is connected to the battery and the aviation plug, the processor is connected to the power electronic circuit, the antenna, and the controllable grounding device at the same time, and the protection circuit and the power electronic circuit are connected in series with the optical fiber composite ground wire middle.

The working principle of the utility model: the splicer is used to connect the optical fiber in the optical fiber composite ground wire, the redundant cable frame is used to wind the redundant optical fiber composite ground wire, and the insulating support is used to lead the optical fiber composite ground wire from the top of the tower to the insulation of the tower. down for easy access to the splice or cable rack. The power converter is used to convert and output power for online monitoring devices, the protection circuit is used to prevent damage from lightning strikes, and the power electronic circuit is used for power conversion to convert the real-time changing current in the optical fiber composite ground wire into a stable current to charge the battery and Supply power to other devices through the aviation plug, the antenna receives the signal, the processor controls the state of the controllable grounding device and the output of the power electronic circuit through the signal received by the antenna, and the controllable grounding device respectively controls the grounding of the optical fiber composite ground wires at both ends. There are two states of grounded and ungrounded.

Compared with the prior art, the utility model has the following beneficial effects:

1. The optical fiber connection of the OPGW can be realized through the present utility model, the power loss of the OPGW can be reduced (it has been verified by theoretical calculation), and the problem that the current OPGW grounded by towers has a large power loss is solved;

2. At the same time, the device can use the power converter connected in series with the OPGW to obtain power from the ground wire to supply power to the online monitoring device installed on the tower. Since the ground wire current of the transmission line that has been erected is only related to the wire current, so The battery of the device does not need to be frequently charged and discharged, and has a long service life, which solves the problem that the current online monitoring device installed on the iron tower lacks a high-stability and long-life power supply;

3. The controllable grounding device is used to control the grounding of the fiber optic composite ground wires at both ends respectively. There are two states of grounding and non-grounding. The grounding mode of the OPGW at the segment can be controlled by this device.

Description of drawings

Fig. 1 is the use state diagram of the ground wire energy taking device of the present invention;

Fig. 2 is the structural diagram of the connector of the present utility model;

Fig. 3 is the structure diagram of the electric energy converter of the present utility model;

In the figure, 1-connector, 2-electric power converter, 3-remaining cable frame, 4-insulation support, 5-fusion unit, 6-optical fiber segment, 7-isolated insulator, 8-fixed fixture, 9-fiber composite Ground wire, 10-fiber, 11-output terminal, 12-steel strand, 13-insulation base, 14-input terminal, 15-protection circuit, 16-power electronic circuit, 17-battery, 18-aviation plug, 19- Antenna, 20-processor, 21-controllable grounding device, 22-pole tower.

Detailed ways

Below in conjunction with specific embodiments and accompanying drawings, the present utility model—the structure and principle of the ground wire energy extraction device will be further described:

As shown in FIG. 1 , the ground wire energy-receiving device of the present invention is generally installed at the connecting segment of the optical fiber composite ground wire (OPGW) 9, and includes a connector 1 for connecting the optical fibers 10 in the optical fiber composite ground wire 9, The power converter 2 connected in series with the steel strand 12 of the optical fiber composite ground wire 9 and the redundant cable rack 3 for collecting the optical fiber composite ground wire 9, the splice 1 and the redundant cable rack 3 both have insulating structures, which can be installed on the tower in isolation. 22, the power converter 2 is installed on the connector 1; there are also a plurality of insulating supports 4, and the insulating supports 4 lead the optical fiber composite ground wire 9 along the top of the tower 22 to facilitate access to the connector 1 or the remaining cable. rack 3.

As shown in FIG. 1, the optical fiber composite ground wires 9 on both sides of the segment are led down from the top of the tower by a plurality of OPGW insulating supports 4, and then connected to the connector 1 installed on the tower 22, and connected to the connector 1. In 1, the optical path is continued, and the excessively long optical fiber composite ground wire 9 is wound on the remaining cable frame 3.

As shown in FIG. 2 , the splice 1 includes two upper and lower fusion splicing units 5 and an isolation insulator 7 with an optical fiber segment 6 preset therein. The two fusion splicing units 5 are respectively connected with both ends of the isolation insulator 7. The optical fiber segments 6 extend into the inner sides of the upper and lower fusion splicing units 5 respectively, and the two fusion splicing units 5 are respectively equipped with fixing fixtures 8 , which are used to fix the optical fiber composite ground wire 9 and introduce the optical fibers 10 of the optical fiber composite ground wire 9 into To the inside of the fusion splicing unit 5, so as to be spliced with the optical fiber segment 6 inside the isolation insulator 7, and at the same time, the fixing fixture 8 is provided with an output terminal 11, and the output terminal 11 is connected with the steel strand 12 of the optical fiber composite ground wire 9 for conversion with electric energy. The splicer 2 is connected, the bottom surface of the fusion splicing unit 5 has an insulating base 13 , and the splice 1 is installed on the pole tower 22 through the insulating base 13 .

As shown in Figure 2: when the utility model is used, the optical fibers 10 inside the optical fiber composite ground wire 9 on both sides of the connecting segment are continued through the connector 1, and the optical fiber composite ground wire 9 is connected inside the fixing fixture 8. Stripping, the stripped optical fiber 10 enters the fusion splicing unit 5, and in the fusion splicing unit 5, the stripped optical fiber 10 is spliced with both ends of the optical fiber segment 6 preset inside the isolation insulator 7 to realize optical path splicing; the stripped steel strand 12 It is connected with the output terminal 11 on the fixing fixture 8, the output terminal 11 on the fixing fixture 8 is connected with the input terminal 14 in the power converter 2, and the power converter 2 is serially connected to the optical fiber composite ground wire 9 to realize the circuit. The power converter 2 converts the time-varying current in the optical fiber composite ground wire 9 into a stable current output for the on-line monitoring device.

As shown in Figure 3: the power converter 2 is used to convert and output power for the online monitoring device, including the input terminal 14 connected to the welding unit 5, the protection circuit 15 for preventing damage such as lightning strikes, and the power used for power conversion. Electronic circuit 16 , battery 17 for electrical energy storage, aviation plug 18 for powering other devices, antenna 19 for receiving signals, processor 20 for controlling the operation of the device, and controllable grounding 21 . The input terminal 14 is connected to the output terminal 11 on the fixing fixture 8, and the power electronic circuit 16 is connected in series to the optical fiber composite ground wire 9. The power electronic circuit 16 can convert the real-time changing current in the optical fiber composite ground wire 9 into a stable current. Supply power to the battery 17 and supply power to other online monitoring devices through the aviation plug 18. The processor 20 controls the state of the controllable grounding device 21 and the output of the power electronic circuit 16 by receiving the signal from the antenna 19. The controllable grounding device 21 can be respectively Control the grounding of the optical fiber composite ground wire 9 at both ends, and there are two states of grounding and non-grounding.

Obviously, the above-mentioned embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. And these obvious changes or changes derived from the spirit of the present utility model are still within the protection scope of the present utility model.

Claims (5)

1. a kind of ground wire energy taking device, it is characterised in that: the device is installed at optical power grounded waveguide (9) continued access segmentation, including Adapter (1), energy converter (2) and remaining cable frame (3), further include multiple insulating supportings (4), and adapter (1) is used for continued access Optical power grounded waveguide (9) inner fiber (10), remaining cable frame (3) is for collecting too long optical power grounded waveguide (9), the adapter (1) insulation system is all had with remaining cable frame (3) and is insulated on shaft tower (22), and energy converter (2) is mounted on adapter (1) on, while energy converter (2) seals in the steel strand wires (12) of optical power grounded waveguide (9)；The insulating supporting (4) is mounted on The tower top of shaft tower (22), for insulation to draw lower and accesses the adapter (1) at the top of shaft tower (22) by optical power grounded waveguide (9) Or remaining cable frame (3).

2. ground wire energy taking device according to claim 1, it is characterised in that: the adapter (1) includes upper and lower two molten Order member (5) and inside preset fiber segment (6) isolated insulation (7), described two welding units (5) respectively with it is described every Both ends from insulator (7) are connected, internal fiber segment (6) both ends of the isolated insulation (7) be respectively protruding into up and down two it is molten On the inside of order member (5), it is separately installed with stationary fixture (8) on described two welding units (5), the stationary fixture (8) is used for Fixed optical power grounded waveguide (9), and it is internal that the optical fiber of optical power grounded waveguide (9) (10) is introduced into welding unit (5), so as to Internal fiber segment (6) welding of the isolated insulation (7), meanwhile, the stationary fixture (8) has output terminal (11), institute It states output terminal (11) to be connected with the steel strand wires (12) of optical power grounded waveguide (9), steel strand wires (12) and energy converter (2) are even It connects.

3. ground wire energy taking device according to claim 2, it is characterised in that: the welding unit of adapter (1) lower part (5) bottom surface is equipped with insulator foot (13), and adapter (1) is mounted on shaft tower (22) by insulator foot (13).

4. ground wire energy taking device according to claim 2, it is characterised in that: the optical power grounded waveguide (9) is in fixing clamp Is stripped out optical fiber (10) and steel strand wires (12) inside tool (8), the optical fiber separated (10) into welding unit (5), and with institute Internal preset fiber segment (6) the both ends welding of isolated insulation (7) is stated, realizes that optical path connects；The steel strand wires (12) that are stripped with Output terminal (11) on stationary fixture (8) is connected, and output terminal (11) is connected with energy converter (2), electric energy conversion Device (2) seals in optical power grounded waveguide (9).

5. ground wire energy taking device according to claim 2, it is characterised in that: the energy converter (2) includes input terminal Sub (14), protection circuit (15), power electronic circuit (16), battery (17), aviation plug (18), antenna (19), processor (20) and controllable earthing or grounding means (21), the input terminal (14) are connected with the output terminal (11) of stationary fixture (8), protect Protection circuit (15) one end connect input terminal (14), the other end connection power electronic circuit (16), power electronic circuit (16) with Battery (17), aviation plug (18) connection, processor (20) simultaneously with power electronic circuit (16), antenna (19), controllably connect Ground device (21) connection, protection circuit (15) are connected with power electronic circuit (16) in optical power grounded waveguide (9).