CN204046514U - A kind of power supply architecture for DC power transmission line on-Line Monitor Device - Google Patents

Abstract

The utility model proposes a power supply structure for the on-line monitoring device of the DC transmission line, which can directly install the solar panel and the rechargeable battery on the overhead wire of the DC transmission line, and solves the power supply of the wire measurement mode of the on-line monitoring device of the DC transmission line question. The power supply structure is based on the spacer bar on the overhead wire as the main frame. The solar panel is connected to the spacer bar through a hinge and has the function of angle adjustment. The bottom end of the solar panel is fixed on the spacer bar through the support frame, and the solar panel lead wire It is the voltage output terminal of the solar battery, and is connected with the battery box through the aviation plug. Compared with the prior art, using the power supply structure proposed by the utility model, the on-line monitoring device of the DC transmission line can be installed on the conductor, and the running information of the conductor of the transmission line can be directly measured, which fills in the installation method of the conductor of the on-line monitoring device of the DC transmission line. Whitespace.

Description

A power supply structure for on-line monitoring device of DC transmission line

technical field

The utility model relates to a power supply structure of a monitoring device for a high-voltage transmission line, in particular to a power supply structure for an on-line monitoring device of a direct current transmission line.

Background technique

High-voltage direct current transmission is responsible for the heavy task of power transmission. Due to the complex terrain of the areas spanned by direct current transmission lines and the great changes in meteorological conditions in various regions, tripping accidents of high-voltage direct current transmission lines are one of the most frequent accidents in direct current transmission. In recent years, transmission line online monitoring equipment has been widely used in the power grid to realize real-time monitoring of transmission line operation information. When an accident occurs, the fault point of the trip accident can be found in time and accurately, and the cause of the fault can be found out. It is of great significance to take effective emergency repair measures and improve the operation and maintenance management level of transmission lines. Since the transmission line online monitoring equipment needs to work continuously in the field environment, a stable and reliable power supply unit becomes one of the core components of the monitoring equipment, which plays a decisive role in the long-term normal operation of the monitoring equipment.

At present, coupling energy harvesting is the most widely used in the power supply mode of online monitoring equipment for high-voltage AC transmission lines. This method converts the alternating electromagnetic field in the space near the wire into the electrical energy required by the device. However, direct current flows through the wires of HVDC transmission lines, and no alternating electromagnetic field is generated, so the coupled power extraction technology cannot be applied to on-line monitoring equipment for HVDC transmission lines. The power supply of the existing on-line monitoring devices for DC transmission lines mainly uses solar panels and rechargeable batteries. Due to the limitation of the power supply structure, they are generally installed on the transmission line towers, and it is impossible to monitor the operation information of the transmission line conductors, such as the temperature of the conductors. , fault current, wire inclination angle, etc. for effective direct measurement.

Therefore, developing a power supply structure for on-line monitoring equipment of HVDC transmission lines has important practical engineering application value.

Utility model content

In order to overcome the limitations of the traditional power supply structure and expand the application of online monitoring equipment on high-voltage direct current transmission lines, the utility model proposes a power supply structure for on-line monitoring devices of direct current transmission lines, which can directly install solar panels and rechargeable batteries on On the overhead conductor of the direct current transmission line, the power supply problem of the wire measurement method of the online monitoring device of the direct current transmission line is solved.

In order to achieve the above purpose, the technical solution adopted by the utility model is: a power supply structure for an on-line monitoring device of a DC transmission line, which is characterized in that it is composed of the following components:

The spacer bar fixed on the overhead wire, the spacer bar is the main frame of the power supply structure;

A solar panel group composed of two solar panels connected in parallel, the top end is connected to the spacer bar through a hinge, and the bottom end is fixed to the spacer bar through a support frame;

The lead wire of the solar cell panel protruding from the solar cell panel group, and the lead wire of the solar cell panel is the voltage output terminal;

The battery box is connected to the spacer bar through the battery box fixing position, and the battery box is connected to the lead wire of the solar panel.

In the aforementioned power supply structure for an on-line monitoring device of a direct current transmission line, the spacer bar is provided with a frame and four wire clips protruding from the four vertices of the frame, and the spacer bar is fixed to the overhead wire through the wire clips; the frame Place the battery case on it.

In the aforementioned power supply structure for an on-line monitoring device of a DC transmission line, the number of split overhead conductors is at least 4, and the split sub-conductors are located at different heights; the clamps are fixed on each split sub-conductor.

In the aforementioned power supply structure for an on-line monitoring device of a DC transmission line, the lead wires of the solar cell panel are routed along the support frame, and the cable ties are wound on the lead wires of the solar cell panel.

In the aforementioned power supply structure for an on-line monitoring device of a DC transmission line, a rechargeable battery, a charging and discharging control circuit board and an on-line monitoring circuit board on a transmission line are placed in the battery box.

In the aforementioned power supply structure for an on-line monitoring device of a direct current transmission line, the lead wire of the solar cell panel has two wires, a positive pole and a negative pole, which are connected to the battery box through an aviation plug.

In the aforementioned power supply structure for an on-line monitoring device of a direct current transmission line, the solar cell panel group is composed of two monocrystalline silicon solar cell panels of the same specification connected in parallel, and the two solar cell panels intersect to form an included angle. The angle is adjusted by the hinge.

The beneficial effect of the utility model is that it overcomes the deficiency of the power supply device of the traditional on-line monitoring equipment of the transmission line, enables the on-line monitoring device of the DC transmission line to be installed on the conductor, and directly measures the running information of the conductor of the transmission line, filling the gap in the on-line monitoring of the DC transmission line. Blank in the installation method of the monitoring device wire. The power supply structure is designed based on the existing hardware equipment on the conductor, and there is no need to add additional new equipment to the conductor, so it has little impact on the electrical performance of the conductor, and the spacer is installed at different positions of the conductor through multiple clamps. The heavy battery box is placed in the center of the spacer, so the power structure is relatively stable, and at the same time, the force on a single position of a single wire is reduced to prevent the power structure from causing greater pressure on the overhead wires.

Description of drawings

Fig. 1 is the structure diagram of the power supply of the on-line monitoring device of the direct current transmission line of the present invention.

Fig. 2 is a schematic diagram of the installation of the power supply battery box of the on-line monitoring device for direct current transmission lines of the present invention.

Detailed ways

The following takes ±500kV direct current transmission line four-split wire as an example for specific description, and the power structure of other voltage levels and wire split numbers is similar.

As shown in Figure 1, a power supply structure for an on-line monitoring device of a DC transmission line consists of a spacer bar 2, a solar panel group 3, a hinge 4, a support frame 5, a solar panel lead wire 6, an aviation plug 7, and a battery box 8 , The battery box fixed position 9 and cable tie 10 constitute. The spacer 2 is the main frame of the power supply structure of the utility model patent, which is installed on the overhead wire 1 of the transmission line. The solar panel group 3 is composed of two monocrystalline silicon solar panels of the same specification in parallel, and is connected with the spacer 2 through the hinge 4. connection, the hinge 4 is fixed on the top edge of the frame of the spacer 2 (refer to Figure 2), and the frame is the frame structure between the four wire clamps shown in Figure 2 (the wire clamps just correspond to the reference number 2). In Fig. 2, it is a mouth-shaped structure, and the hinge 4 makes the angle between the two solar panels adjustable.

The bottom end of the solar cell panel group 3 is fixed on the spacer bar 2 through the support frame 5, and the two ends of the support frame 5 are respectively connected with two solar cell panels, and the support frame 5 is supported on the bottom edge of the frame. There can be two supporting frames 5, which are drawn from two points at the bottom of the solar panel, or one, which is drawn from one point at the bottom of one solar panel and ends at one point at the bottom of the other solar panel. .

The lead wire 6 of the solar cell panel is the voltage output terminal of the solar cell, has two wires of a positive pole and a negative pole, and is connected with the battery box 8 through the aviation plug 7 . The inside of the battery box 8 can place a rechargeable battery, a charge and discharge control circuit board, and a circuit board that completes the on-line monitoring function of the transmission line. ) The battery box 8 is fixed on the frame of the spacer bar 2 through the nut connection device. The lead wires 6 of the solar cell panel are routed along the support frame 5, and the cable ties 10 play a fixing role.

As shown in Figure 2, the battery box 8 is a rectangular parallelepiped structure, and the side length of the bottom surface of the battery box is the same as the side length of the frame of the spacer bar 2, and there are 4 connection holes (ie screw holes) on the side for fixing to the spacer bar 2 on the frame. Below the battery box 8 is the installation position of the aviation plug 7, and according to actual application requirements, multiple aviation plugs can be equipped.

The embodiments of the utility model described above do not constitute a limitation to the protection scope of the utility model. Any modifications, equivalent replacements and improvements made within the spirit and principle of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (7)

1. for a power supply architecture for DC power transmission line on-Line Monitor Device, it is characterized in that, form by with lower component:

Be fixed on the conductor spacer of aerial condutor, conductor spacer is the main frame of power supply architecture;

The solar panel group be made up of two pieces of solar panel parallel connections, its top is connected with conductor spacer by hinge, and conductor spacer is fixed on by bracing frame in bottom;

The solar panel lead-in wire stretched out by solar panel group, solar panel lead-in wire is voltage output end;

By the battery case that battery case fixed bit is connected with conductor spacer, battery case goes between with solar panel and is connected.

2. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 1, is characterized in that, four wire clamps that described conductor spacer is provided with framework and stretches out from four summits of framework, and conductor spacer is fixed on aerial condutor by wire clamp; Box for placing cell in ether on framework.

3. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 2, is characterized in that, described aerial condutor division number is at least 4, and oidiospore wire is positioned at differing heights; Wire clamp is fixed on each oidiospore wire.

4. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 1, is characterized in that, solar panel lead-in wire is along described bracing frame cabling, and band is wound on solar panel lead-in wire.

5. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 1, is characterized in that, places rechargeable battery, charge-discharge control circuit plate and transmission line on-line monitoring circuit board in battery case.

6. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 1, is characterized in that, described solar panel lead-in wire has positive pole and negative pole two lines, is connected with battery case by aviation plug.

7. a kind of power supply architecture for DC power transmission line on-Line Monitor Device according to claim 1, it is characterized in that, described solar panel group is made up of the parallel connection of two pieces of same specification single-crystalline-silicon solar-cell panels, two pieces of solar panels intersect in an angle, and the angle of angle is regulated by hinge.