CN211790951U

CN211790951U - Stable standby power supply system capable of being used for communication base station

Info

Publication number: CN211790951U
Application number: CN202020539135.6U
Authority: CN
Inventors: 鲜继凯
Original assignee: Chongqing Jike Technology Development Co ltd
Current assignee: Chongqing Jike Technology Development Co ltd
Priority date: 2020-04-13
Filing date: 2020-04-13
Publication date: 2020-10-27
Anticipated expiration: 2030-04-13

Abstract

The utility model discloses a stable form stand-by power supply system that can be used for communication base station, including diesel engine, permanent magnet generator, rectifier, basic station switching power supply and basic station battery group, diesel engine, permanent magnet generator, rectifier and basic station switching power supply connect gradually. Technical scheme more than adopting, through the design based on permanent magnet generator and diesel engine, not only reliable and stable, the fault rate is extremely low, durable, and efficiency has been improved, fuel oil consumption has been practiced thrift, simultaneously, purchasing cost is low, communication base station's construction cost has been reduced, and, permanent magnet generator compares in excitation generator, light in weight is half, be convenient for transport and move and lift, more be suitable for primitive landform areas such as mountain region hills, the manpower has both been reduced, diesel engine is much higher than traditional gasoline engine safety in utilization again, more be applicable to unmanned on duty fixed base station.

Description

Stable standby power supply system capable of being used for communication base station

Technical Field

The utility model relates to a communication base station equipment technical field, concretely relates to stable form stand-by power supply system that can be used for communication base station.

Background

The construction of mobile communication base stations is an important part of the investment of mobile communication operators, and is generally carried out around the factors of coverage, call quality, investment benefit, difficult construction, convenient maintenance and the like.

The standby power supply system is one of necessary equipment of the communication base station, and can provide power for the communication base station when a power grid is powered off, so that the normal operation of the communication base station is ensured. For a long time, a standby power supply system of a communication base station is built based on an excitation generator, the excitation generator is low in efficiency (60% -70%), high in oil consumption, large in size and heavy in weight, and not beneficial to carrying, and particularly, many communication base stations are built in mountainous areas without direct roads, the generator can be carried by people with shoulders, so that the labor is very great, and the safety risk is extremely high.

The permanent magnet generator has the advantages of higher efficiency, more energy conservation, light weight and small volume. The diesel engine belongs to compression ignition work, so different from a gasoline engine, a control mechanism for controlling an accelerator and an air door is not needed, and the diesel engine has the advantages of low failure rate and high reliability. Moreover, the diesel engine is safer to use than a gasoline engine, the use cost is low, and the oil consumption is only half of that of the gasoline engine. Therefore, a set of communication base station standby power supply system based on a permanent magnet generator and a diesel engine is urgently needed to be designed.

SUMMERY OF THE UTILITY MODEL

For solving above technical problem, the utility model provides a stable form stand-by power supply system that can be used for communication base station.

The technical scheme is as follows:

a stable standby power supply system capable of being used for a communication base station is characterized by comprising a diesel engine, a permanent magnet generator, a rectifier, a base station switch power supply and a base station battery pack, wherein the diesel engine, the permanent magnet generator, the rectifier and the base station switch power supply are sequentially connected;

the diesel engine drives the permanent magnet generator, and medium-frequency medium-voltage alternating current output by the permanent magnet generator is rectified into medium-voltage direct current through the rectifier and supplies power to the base station switching power supply;

the direct current output by the base station switch power supply can charge the base station battery pack, and the base station switch power supply and the base station battery pack can supply power to a base station load in parallel.

By adopting the structure, the diesel engine drives the permanent magnet generator to work, the rectifier is used for rectifying the medium-frequency medium-voltage alternating current generated by the permanent magnet generator into medium-voltage direct current which can adapt to a base station switching power supply module, and then the medium-voltage direct current is transmitted to a base station battery pack and a base station load at the rear end, so that stable power supply of a communication system is realized; the diesel engine does not need to be provided with a control mechanism for controlling an accelerator and an air door, and is stable, reliable, extremely low in failure rate and durable; compared with the traditional excitation generator with the same power generation performance, the permanent magnet generator has the advantages that the efficiency is improved by 20%, fuel oil is saved by about 50%, the purchasing cost is reduced by 20%, the construction cost of a communication base station is reduced, meanwhile, compared with the excitation generator, the permanent magnet generator is light in weight and half, convenient to transport and move, and more suitable for original landform areas such as mountains and hills, manpower is reduced, and the diesel engine is higher in safety in use than the traditional gasoline engine, and is more suitable for an unattended fixed base station.

Preferably, the method comprises the following steps: the rectifier is an MDS three-phase rectifier bridge. By adopting the structure, compared with the traditional AC-DC converter, the MDS three-phase rectifier bridge has the advantages of high bearing power, low failure rate, easiness in overhauling and maintenance, low price and the like.

Preferably, the method comprises the following steps: the direct current voltage output by the rectifier to the base station switching power supply is 250V-310V. By adopting the mode, the voltage is stable, the power can be directly supplied to the base station switch power supply, and the base station switch power supply can be protected.

Preferably, the method comprises the following steps: the direct current voltage output by the base station switching power supply to a base station load and a base station battery pack is 50V-52V. By adopting the mode, the voltage is stable.

Preferably, the method comprises the following steps: the permanent magnet generator is a rare earth permanent magnet generator. Compared with the common permanent magnet generator, the permanent magnet generator with the structure has a series of advantages of small size, light weight, high efficiency, good characteristics and the like.

Compared with the prior art, the beneficial effects of the utility model are that:

technical scheme's stable form stand-by power supply system that can be used for communication basic station more than adopting, novel structure, easily realize, through the design based on permanent magnet generator and diesel engine, not only reliable and stable, the fault rate is extremely low, durable, and efficiency is improved, fuel consumption has been practiced thrift, and simultaneously, purchasing cost is low, communication basic station's construction cost has been reduced, and, permanent magnet generator compares in excitation generator, light in weight is half, be convenient for transportation and removal are lifted, be more suitable for primitive landform areas such as mountain region hills, the manpower has both been reduced, diesel engine is than traditional gasoline engine safety in utilization much more in addition, be more applicable to unmanned on duty's fixed basic station.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

As shown in fig. 1, a stable standby power system capable of being used in a communication base station includes a diesel engine 1, a permanent magnet generator 2, a rectifier 3, a base station switching power supply 4 and a base station battery pack 5, wherein the diesel engine 1, the permanent magnet generator 2, the rectifier 3 and the base station switching power supply 4 are connected in sequence.

The diesel engine 1 is used for driving the permanent magnet generator 2, and medium-frequency medium-voltage alternating current output by the permanent magnet generator 2 is rectified into medium-voltage direct current (DC250V-310V) suitable for the base station switch power supply 4 through the rectifier 3 so as to supply power to the base station switch power supply 4. Then, the base station switching power supply 4 converts the medium-voltage direct current (DC250V-310V) into a low-voltage direct current (DC50V-52V) suitable for the base station load 6 and the base station battery pack 5, and the base station switching power supply 4 can charge the base station battery pack 5 and supply power in parallel to the base station load 6 together with the base station battery pack 5. The base station load 6 is an electric device of the communication base station.

In this embodiment, the rectifier 3 preferably adopts an MDS three-phase rectifier bridge. For a common AC-DC converter, the load power is small (generally less than 5kW), the failure rate is high, the maintenance is difficult, the converter can be directly replaced, and the operation and maintenance cost is high. The MDS three-phase rectifier bridge effectively overcomes the defects of the AC-DC converter, and has the advantages of high bearing power, low failure rate, easiness in overhauling and maintenance, low price and the like.

In this embodiment, the permanent magnet generator 2 is preferably a rare earth permanent magnet generator. Compared with the common permanent magnet generator, the permanent magnet generator has a series of advantages of small size, light weight, high efficiency, good characteristics and the like.

Finally, please see the following cases:

the total load of the base station load 6 is 52V/160A, if an excitation generator is selected, double-cylinder power and a 15KW excitation generator are needed, and if a permanent magnet generator is selected, only single-cylinder power and a 9KW permanent magnet generator are needed to achieve the same effect. Compared with the prior art, the efficiency of the permanent magnet generator is improved by 20-30% (the generating efficiency of the excitation generator is 60-70%, the generating efficiency of the permanent magnet generator is 90-95%), the oil consumption is saved by about half, the weight is also reduced by about half, and the purchase cost is only about 80% of that of the excitation generator. Therefore, compared with the traditional excitation generator-based communication base station standby power supply system, the permanent magnet generator-based communication base station standby power supply system has obvious advantages, and the problem of pain of the traditional excitation generator-based communication base station is solved.

Finally, it should be noted that the above description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and the scope of the present invention.

Claims

1. A stable backup power system usable with a communication base station, comprising: the base station battery pack power supply comprises a diesel engine (1), a permanent magnet generator (2), a rectifier (3), a base station switch power supply (4) and a base station battery pack (5), wherein the diesel engine (1), the permanent magnet generator (2), the rectifier (3) and the base station switch power supply (4) are sequentially connected;

the diesel engine (1) drives the permanent magnet generator (2), medium-frequency and medium-voltage alternating current output by the permanent magnet generator (2) is rectified into medium-voltage direct current through the rectifier (3) and supplies power to the base station switching power supply (4);

the direct current output by the base station switch power supply (4) can charge the base station battery pack (5), and the base station switch power supply (4) and the base station battery pack (5) can supply power to a base station load (6) in parallel.

2. A stable backup power system capable of being used in a communication base station according to claim 1, wherein: the rectifier (3) is an MDS three-phase rectifier bridge.

3. A stable backup power system capable of being used in a communication base station according to claim 1 or 2, characterized in that: the direct-current voltage output to the base station switching power supply (4) by the rectifier (3) is 250-310V.

4. A stable backup power system capable of being used in a communication base station according to claim 3, wherein: the direct-current voltage output by the base station switch power supply (4) to a base station load (6) and a base station battery pack (5) is 50-52V.

5. A stable backup power system capable of being used in a communication base station according to claim 1, wherein: the permanent magnet generator (2) adopts a rare earth permanent magnet generator.