CN104601009A - Power supply system based on small base station - Google Patents

Abstract

The embodiment of the present invention discloses a power supply system based on a small base station, which relates to the technical field of power supply and is used to avoid possible dangerous problems when a power distribution line of a small base station equipment is short-circuited and a person comes into contact with the small base station equipment. The power supply system includes an AC distribution box and a power distribution box, the output of the power distribution box is connected to the small base station; the power supply system also includes: a rectifier, wherein the input of the rectifier is connected to the AC distribution box The output terminal is connected; the output terminal of the rectifier is connected to the input terminal of the power distribution box; the rectifier is used to convert the alternating current output from the output terminal of the AC distribution box into the direct current required by the small base station , and supply power to the small base station through the power distribution box. The power supply system can be used to provide power for small base stations.

Description

A power supply system based on a small base station

technical field

The present invention relates to the technical field of power supply, in particular to a power supply system based on a small base station.

Background technique

Small base stations are often built in non-telecommunication environments, and site construction is relatively flexible. For example, small base stations can be built by directly hanging the small base station equipment on the wall or installing it on a light pole or monitoring pole. However, many small base station equipment cannot use conventional lightning protection methods (for example, laying ground nets) to implement lightning protection for small base station equipment.

At present, small base station equipment generally adopts floating or isolation methods to achieve lightning protection, and the power supply voltage of the power distribution box of small base station equipment is provided through the AC distribution box, and the output voltage of the AC distribution box is generally 220V; There is a large potential difference between the ground potential of the small base station and the earth potential. Therefore, when the distribution line of the small base station equipment is short-circuited, if people come into contact with the small base station equipment, the voltage may be too large, which may cause danger.

Contents of the invention

An embodiment of the present invention provides a power supply system based on a small base station, which is used to avoid possible dangerous problems when a power distribution line of the small base station equipment is short-circuited and people come into contact with the small base station equipment.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, a power supply system based on a small base station is provided, including an AC power distribution box and a power distribution box, the output end of the power distribution box is connected to the small base station; the power supply system further includes: a rectifier, in,

The input end of the rectifier is connected to the output end of the AC distribution box;

The output end of the rectifier is connected to the input end of the power distribution box;

The rectifier is used to convert the AC power output by the output end of the AC power distribution box into the DC power required by the small base station, and supply power to the small base station through the power distribution box.

With reference to the first aspect, in a first possible implementation manner, a housing of the rectifier is connected to a ground bar of the AC distribution box.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the power supply system further includes: a lightning protector, where the lightning protector includes an input terminal and a ground terminal; The input terminal of the lightning protector is connected to the input terminal of the rectifier, and the ground terminal of the lightning protector is used for grounding.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the ground terminal of the lightning protector is connected to the ground bar of the AC distribution box.

The power supply system based on the small base station provided by the embodiment of the present invention converts the AC output from the AC power distribution box into the DC power required by the small base station, and supplies power to the small base station through the power distribution box; since the DC voltage required by the small base station is relatively low Small, although there is a potential difference between the ground potential of the small base station and the earth potential, the value of the potential difference is small; would be dangerous.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a schematic composition diagram of a power supply system based on a small base station provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of another power supply system based on a small base station provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

An embodiment of the present invention provides a power supply system 10 based on a small base station. As shown in FIG. 1 , it includes an AC power distribution box 101 and a power distribution box 102. Base station connection; the power supply system 10 also includes: a rectifier 103, wherein,

The input end 1031 of the rectifier 103 is connected to the output end 1011 of the AC power distribution box 101;

The output terminal 1032 of the rectifier 103 is connected to the input terminal 1022 of the power distribution box 102;

The rectifier 103 is used to convert the AC power output by the output terminal 1011 of the AC power distribution box 101 into the DC power required by the small base station, and supply power to the small base station through the power distribution box 102 .

The power supply system 10 provided by the embodiment of the present invention can be used to provide power for small base stations. The power supply system 10 is especially suitable for small base stations where there is a potential difference between the ground potential of the small base station and the earth potential. For example, it can be realized by means of floating or isolation. Small base station for lightning protection. In the embodiment of the present invention, the power supply system 10 is used as an example to provide power for a small base station that implements lightning protection by means of floating or isolation. Generally, the DC voltage required by the small base station is relatively small, for example, it may be -48V DC or -24V DC. During specific implementation of the embodiment of the present invention, an appropriate rectifier 103 may be selected according to the DC voltage required by the small base station.

Optionally, as shown in FIG. 2 , the shell 1033 of the rectifier 103 is connected to the ground bar 1012 of the AC distribution box 101 .

In order to prevent people from touching the shell 1033 of the rectifier 103 and getting an electric shock, it is necessary to ground the shell 1033 of the rectifier 103. Since it is difficult to find the grounding points of small base stations that generally adopt methods such as floating or isolation to achieve lightning protection, the grounding point of the rectifier 103 The shell 1033 is connected to the ground bar 1012 of the AC distribution box 101 .

It should be noted that, in order to clearly describe the connection relationship of each device in the power supply system 10 in Fig. 1 and Fig. 2, each device with a connection relationship is connected by a distribution line. Devices can be connected by two distribution wires (for example, a neutral wire and a live wire).

Optionally, as shown in FIG. 2, the power supply system 10 further includes: a lightning protector 104, the lightning protector 104 includes an input terminal 1041 and a ground terminal 1042; the input terminal 1041 of the lightning protector 104 is connected to a rectifier The input terminal 1031 of 103 is connected, and the ground terminal 1042 of the lightning arrester 104 is used for grounding.

Specifically, when the power distribution line between the AC power distribution box 101 and the rectifier 103 is struck by lightning, the lightning current generated by the lightning strike will flow into the rectifier 103, the power distribution box 102 and the small base station along the power distribution line. Damage to the rectifier 103, the power distribution box 102, and the small base station. When the input terminal 1041 of the lightning protector 104 is connected to the input terminal 1031 of the rectifier 103, the lightning protector 104 in the power supply system 10 can prevent lightning current from damaging the rectifier 103, the power distribution box 102 and the small base station.

It should be noted that the input terminal 1041 of the lightning protector 104 can also be connected to the input terminal 1022 of the power distribution box 102. In this case, the lightning protector 104 in the power supply system 10 can prevent lightning current from affecting the power distribution box 102 and damage to small base stations. During specific implementation, the position of the lightning protector 104 may be placed according to actual needs, which is not limited in the embodiment of the present invention.

In addition, the lightning protector 104 of an appropriate magnitude can be selected according to the environment of the small base station; for example, if the environment of the small base station is harsh, the power distribution line between the AC distribution box 101 and the rectifier 103 may often be struck by lightning, Then you can choose a lightning protector 104 with a larger magnitude (for example, 60KA); Lightning protector 104 of small magnitude (for example, 10KA).

Optionally, as shown in FIG. 2 , the ground terminal 1042 of the lightning protector 104 is connected to the ground bar 1012 of the AC distribution box 101 .

In order to realize the lightning protection effect of the lightning protection device 104, the grounding terminal 1042 of the lightning protection device 104 needs to be grounded. Since it is difficult to find the grounding point of a small base station that realizes lightning protection by means of floating or isolation, the lightning protection device The ground terminal 1042 of the switch 104 is connected to the ground bar 1012 of the AC distribution box 101 .

The power supply system based on the small base station provided by the embodiment of the present invention converts the AC output from the AC power distribution box into the DC power required by the small base station, and supplies power to the small base station through the power distribution box; since the DC voltage required by the small base station is relatively low Small, although there is a potential difference between the ground potential of the small base station and the earth potential, the value of the potential difference is small; would be dangerous.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (4)

1. based on an electric power system for small base station, comprise A.C. distribution box and electrical power distribution case, the output of described electrical power distribution case is connected with described small base station; It is characterized in that, described electric power system also comprises: rectifier, wherein,

The input of described rectifier is connected with the output of described A.C. distribution box;

The output of described rectifier is connected with the input of described electrical power distribution case;

Described rectifier is used for the direct current be converted to by the alternating current that the output of described A.C. distribution box exports needed for described small base station, and is that described small base station is powered by described electrical power distribution case.

2. electric power system according to claim 1, is characterized in that, the shell of described rectifier is arranged with the ground of described A.C. distribution box and is connected.

3. electric power system according to claim 1 and 2, is characterized in that, described electric power system also comprises: lightning protection device, and described lightning protection device comprises input and earth terminal; The input of described lightning protection device is connected with the input of rectifier, and the earth terminal of described lightning protection device is used for ground connection.

4. electric power system according to claim 3, is characterized in that, the earth terminal of described lightning protection device is arranged with the ground of described A.C. distribution box and is connected.