CN204696796U - Centralized alternating current-direct current dual input d. c. remote is powered far end system - Google Patents

Centralized alternating current-direct current dual input d. c. remote is powered far end system Download PDF

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Publication number
CN204696796U
CN204696796U CN201520390604.1U CN201520390604U CN204696796U CN 204696796 U CN204696796 U CN 204696796U CN 201520390604 U CN201520390604 U CN 201520390604U CN 204696796 U CN204696796 U CN 204696796U
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China
Prior art keywords
pressure unit
voltage
direct current
input
direct
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CN201520390604.1U
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Chinese (zh)
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李新领
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Beijing Hong Guang Xing Yu Technology Development Co Ltd
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Beijing Hong Guang Xing Yu Technology Development Co Ltd
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Abstract

The utility model discloses a kind of centralized alternating current-direct current dual input d. c. remote and to power far end system, the Remote feeding unit of this system comprises AC-DC pressure unit and DC-DC pressure unit, wherein: described AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the output voltage of described AC-DC pressure unit and DC-DC pressure unit is equal, obtains-48V direct current after step-down.In the utility model, far-end supports mains input and high voltage direct current input, the high direct voltage rectification that the mains of input and local side export can be depressured to DC low-voltage, power to communication equipment.

Description

Centralized alternating current-direct current dual input d. c. remote is powered far end system
Technical field
The utility model relates to a kind of centralized alternating current-direct current dual input d. c. remote and to power far end system, belongs to moving communicating field, realizes mains and the direct current dual input of local side and far-end in d. c. remote electric power system.
Background technology
Direct-current remote feeding power system is positioned the safe power supply for local side and the remote access device of mobile communications network, Integrated access network provide carrier class to ensure, solve to a certain extent at present networking and run in safeguarding connect electricity difficult, have a power failure, the problem such as electrical network is unstable.But because d. c. remote electric power system adopts specialized power cable or optoelectronic composite cable long-distance transmissions electric current (more than 2Km), result in the loss of electric energy loss on cable and transmission facility, raise the cost; And the reasons such as DC remote power supply transmission line failure, local side machine room power failure, battery discharging quantity not sufficient all can cause Remote feeding voltage to reduce even power-off, cause communication equipment not work, communicating interrupt; In addition along with the development of 3G, 4G and even 5G, the demand of Large Copacity power supply unit is also become increasingly conspicuous.
There is following shortcoming in the DC remote power supply system of current application:
1, far-end is limited to the factor such as power supply capacity, power transmission cable loss of local side completely to the power supply capacity of equipment, if local side fault or power transmission cable damage, directly will cause far-end power down;
2, to the high direct voltage that far-end provides, be through that repeatedly voltage transitions obtains, due to problems such as local side DC Module efficiency and line losses, certain electric energy loss can be caused.
Utility model content
The purpose of this utility model is to provide a kind of centralized alternating current-direct current dual input d. c. remote and powers far end system, far-end supports that AC and DC dual input is powered, AC and DC can individually be powered, also can hybrid power supply, and the phenomenon that there will not be output voltage to fall when alternating current-direct current switches.
The purpose of this utility model carrys out specific implementation by the following technical programs:
Centralized alternating current-direct current dual input d. c. remote is powered far end system, and the Remote feeding unit of this system comprises AC-DC pressure unit and DC-DC pressure unit, wherein:
Described AC-DC pressure unit, in order to be transformed into-48V low-voltage DC by 220V electric main;
Described DC-DC pressure unit, in order to become-48V low-voltage DC by 200V-600V DC power conversion;
Described AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the output voltage of described AC-DC pressure unit and DC-DC pressure unit is equal, obtains-48V direct current after step-down.
The input direct voltage of described DC-DC pressure unit exports from local side.
Described local side output voltage is the direct current of 200-600V.
Described AC-DC pressure unit, mains input is connected with rectifier circuit, successively be connected on step-down transformer by inductance coil and diode after rectifier circuit rectification, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
Described DC-DC pressure unit, direct-flow input end is connected with rectifier circuit, is directly connected on step-down transformer after rectifier circuit rectification, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
When civil power is comparatively stablized, far-end can adopt the main power supply of mains, and direct current is for subsequent use, reduces direct current high tension transmission loss drawn game terminal voltage and changes the loss brought; When civil power is poor or have a power failure, the main power supply of direct current, ensures equipment not power-off; When load is larger, AC and DC can be powered simultaneously, for equipment provides sufficient electrical energy.This programme is suitable for and is not limited to above-mentioned citing.
In the utility model, far-end supports mains input and high voltage direct current input, the high direct voltage rectification that the mains of input and local side export can be depressured to DC low-voltage, power to communication equipment.
The utility model this programme in practical operation has the following advantages:
Far-end supports AC and DC dual input, and input mode is flexible, supports to exchange power supply separately, direct current is powered separately, AC/DC hybrid power supply;
When load is less, AC and DC can be protected each other, and can arrange interchange is as required main power supply, and direct current is for subsequent use, or direct current is main power supply, exchanges as subsequent use, thus reduces self power consumption of system;
When load is larger, can by AC and DC hybrid power supply, for load provides enough electric energy;
Exchanging under main power supply, direct current application scenarios for subsequent use, far-end can reduce the electric energy loss in high voltage direct current transmission and voltage transitions process.Reach energy-conservation object;
Under the application scenarios that AC/DC is protected each other, can proof load can not impact system when becoming large suddenly; Still system works can be ensured when exchanging or direct current has a side to have a power failure.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is that centralized alternating current-direct current dual input d. c. remote described in the utility model embodiment is powered the circuit theory diagrams of far end system.
Fig. 2 is the circuit diagram of AC-DC pressure unit described in the utility model embodiment.
Fig. 3 is the circuit diagram of AC-DC pressure unit described in the utility model embodiment.
Embodiment
Below preferred embodiment of the present utility model is described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the utility model, and be not used in restriction the utility model.
Below in conjunction with accompanying drawing, a preferred embodiment of the present utility model is described.
As shown in Figure 1, centralized alternating current-direct current dual input d. c. remote described in the utility model embodiment is powered far end system, and the Remote feeding unit of this system comprises AC-DC pressure unit and DC-DC pressure unit, wherein:
Described AC-DC pressure unit, in order to be transformed into-48V low-voltage DC by 220V electric main;
Described DC-DC pressure unit, in order to become-48V low-voltage DC by 200V-600V DC power conversion;
Described AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the output voltage of described AC-DC pressure unit and DC-DC pressure unit is equal, obtains-48V direct current after step-down.
The input direct voltage of described DC-DC pressure unit exports from local side.
Described local side output voltage is 380V direct current.
Described AC-DC pressure unit, mains input is connected with rectifier circuit, successively be connected on step-down transformer by inductance coil and diode after rectifier circuit rectification, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
Described DC-DC pressure unit, direct-flow input end is connected with rectifier circuit, is directly connected on step-down transformer after rectifier circuit rectification, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
When civil power is comparatively stablized, far-end can adopt the main power supply of mains, and direct current is for subsequent use, reduces direct current high tension transmission loss drawn game terminal voltage and changes the loss brought; When civil power is poor or have a power failure, the main power supply of direct current, ensures equipment not power-off; When load is larger, AC and DC can be powered simultaneously, for equipment provides sufficient electrical energy.This programme is suitable for and is not limited to above-mentioned citing.
In the utility model, far-end supports mains input and high voltage direct current input, the high direct voltage rectification that the mains of input and local side export can be depressured to DC low-voltage, power to communication equipment.
The utility model this programme in practical operation has the following advantages:
Far-end supports AC and DC dual input, and input mode is flexible, supports to exchange power supply separately, direct current is powered separately, AC/DC hybrid power supply;
When load is less, AC and DC can be protected each other, and can arrange interchange is as required main power supply, and direct current is for subsequent use, or direct current is main power supply, exchanges as subsequent use, thus reduces self power consumption of system;
When load is larger, can by AC and DC hybrid power supply, for load provides enough electric energy;
Exchanging under main power supply, direct current application scenarios for subsequent use, far-end can reduce the electric energy loss in high voltage direct current transmission and voltage transitions process.Reach energy-conservation object;
Under the application scenarios that AC/DC is protected each other, can proof load can not impact system when becoming large suddenly; Still system works can be ensured when exchanging or direct current has a side to have a power failure.
Last it is noted that the foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, although be described in detail the utility model with reference to previous embodiment, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.

Claims (5)

1. centralized alternating current-direct current dual input d. c. remote is powered far end system, and it is characterized in that, the Remote feeding unit of this system comprises AC-DC pressure unit and DC-DC pressure unit, wherein:
Described AC-DC pressure unit, in order to be transformed into-48V low-voltage DC by 220V electric main;
Described DC-DC pressure unit, in order to become-48V low-voltage DC by 200V-600V DC power conversion;
Described AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the output voltage of described AC-DC pressure unit and DC-DC pressure unit is equal, obtains-48V direct current after step-down.
2. the system as claimed in claim 1, is characterized in that, the input direct voltage of described DC-DC pressure unit exports from local side.
3. the system as claimed in claim 1, is characterized in that, described local side output voltage range is the direct current of 200-600V.
4. the system as claimed in claim 1, it is characterized in that, described AC-DC pressure unit, mains input is connected with rectifier circuit, successively be connected on step-down transformer by inductance coil and diode after rectifier circuit rectification, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
5. the system as claimed in claim 1, it is characterized in that, described DC-DC pressure unit, direct-flow input end is connected with rectifier circuit, be directly connected to after rectifier circuit rectification on step-down transformer, the output of step-down transformer respectively by inductance coil with have polar capacitor and be connected with low-voltage direct output.
CN201520390604.1U 2015-06-08 2015-06-08 Centralized alternating current-direct current dual input d. c. remote is powered far end system Active CN204696796U (en)

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Application Number Priority Date Filing Date Title
CN201520390604.1U CN204696796U (en) 2015-06-08 2015-06-08 Centralized alternating current-direct current dual input d. c. remote is powered far end system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105141115A (en) * 2015-10-16 2015-12-09 天津七六四通信导航技术有限公司 Intersected input AC/DC power supply conversion circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105141115A (en) * 2015-10-16 2015-12-09 天津七六四通信导航技术有限公司 Intersected input AC/DC power supply conversion circuit

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GR01 Patent grant
C14 Grant of patent or utility model
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Centralized alternating current -direct current dual input direct current remote power supply distal end system

Effective date of registration: 20180709

Granted publication date: 20151007

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: BEIJING HONG GUANG XING YU TECHNOLOGY DEVELOPMENT CO., LTD.

Registration number: 2018990000543

PE01 Entry into force of the registration of the contract for pledge of patent right
PC01 Cancellation of the registration of the contract for pledge of patent right

Date of cancellation: 20190628

Granted publication date: 20151007

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: BEIJING HONG GUANG XING YU TECHNOLOGY DEVELOPMENT CO., LTD.

Registration number: 2018990000543

PC01 Cancellation of the registration of the contract for pledge of patent right
PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: Centralized alternating current -direct current dual input direct current remote power supply distal end system

Effective date of registration: 20190715

Granted publication date: 20151007

Pledgee: Beijing technology intellectual property financing Company limited by guarantee

Pledgor: BEIJING HONG GUANG XING YU TECHNOLOGY DEVELOPMENT CO., LTD.

Registration number: 2019990000716

PE01 Entry into force of the registration of the contract for pledge of patent right