CN204696682U - Centralized alternating current-direct current dual input d. c. remote electric power system - Google Patents
Centralized alternating current-direct current dual input d. c. remote electric power system Download PDFInfo
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- CN204696682U CN204696682U CN201520390624.9U CN201520390624U CN204696682U CN 204696682 U CN204696682 U CN 204696682U CN 201520390624 U CN201520390624 U CN 201520390624U CN 204696682 U CN204696682 U CN 204696682U
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Abstract
The utility model discloses a kind of centralized alternating current-direct current dual input d. c. remote electric power system, comprise local side power supply unit and Remote feeding unit, local side power supply unit comprises AC-DC boosting unit and DC-DC boosting unit, AC-DC boosting unit and the parallel connection of DC-DC boosting unit, and obtain the high voltage direct current of 200-600V after boosting, described Remote feeding unit comprises AC-DC pressure unit and DC-DC pressure unit, AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the low-voltage direct obtaining-48V after step-down exports; The high voltage direct current of described local side power supply unit exports the DC-DC pressure unit of described Remote feeding unit to.The utility model has the following advantages in actual applications: local side and far-end support 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.
Description
Technical field
The utility model relates to a kind of centralized alternating current-direct current dual input d. c. remote electric power 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 local side and 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, local side adopts low-voltage direct input power supply, and power supply capacity is limited to battery and Switching Power Supply;
2, AC rectification is low-voltage direct when powering to local side by Switching Power Supply, due to factors such as switch power efficiency, can cause electric energy loss;
3, 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;
4, 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 electric power system, local side and far-end all support 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 electric power system, comprise local side power supply unit and Remote feeding unit, local side power supply unit comprises AC-DC boosting unit and DC-DC boosting unit, AC-DC boosting unit and the parallel connection of DC-DC boosting unit, and obtain the high voltage direct current of 200-600V after boosting, described Remote feeding unit comprises AC-DC pressure unit and DC-DC pressure unit, AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the low-voltage direct obtaining-48V after step-down exports; The high voltage direct current of described local side power supply unit exports the DC-DC pressure unit of described Remote feeding unit to.
Local side power supply unit and Remote feeding unit carry out data interaction in the form of a carrier wave by high direct voltage cable.
Described AC-DC boosting unit, mains input is connected with rectifier circuit, successively be connected on step-up transformer by inductance coil and diode after rectifier circuit rectification, the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
Described DC-DC boosting unit, direct-flow input end is connected with rectifier circuit, is directly connected on step-up transformer after rectifier circuit rectification, and the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
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, local side and far-end all can adopt the main power supply of mains, and direct current is for subsequent use, reduce direct current high tension transmission loss drawn game terminal voltage and change 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, local side and far-end all can realize simultaneous AC and DC power supply, for equipment provides sufficient electrical energy.
In the utility model, local side supports mains input and low-voltage direct input, input voltage rectifier boost distally can be powered to high direct voltage (200V-600V); 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.In the utility model, local side and far-end all support direct current and the dual input exchanged, support to exchange separately power supply, support that direct current is powered separately, support to exchange main supplying DC for subsequent use, support that the main supply and AC of direct current is for subsequent use, support that AC and DC is powered simultaneously, there is AC/DC mutually back up, improve the features such as equipment power supply capacity, improve the reliability of system power supply, flexibility and power supply capacity, and can electric energy loss be reduced.
The utility model has the following advantages in actual applications:
Local side and far-end support AC and DC dual input, and input mode is flexible, support 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, local side can reduce the electric energy loss that Switching Power Supply is brought; 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;
Office's far-end realizes data interaction by carrier wave on high direct voltage cable, reduces cost, improves the maintainability of product.
Accompanying drawing explanation
According to drawings and embodiments the utility model is described in further detail below.
Fig. 1 is the circuit theory diagrams of centralized alternating current-direct current dual input d. c. remote electric power system described in the utility model embodiment.
Fig. 2 is the circuit diagram of AC-DC boosting unit described in the utility model embodiment.
Fig. 3 is the circuit diagram of AC-DC boosting unit described in the utility model embodiment.
Fig. 4 is the circuit diagram of AC-DC pressure unit described in the utility model embodiment.
Fig. 5 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 electric power system described in the utility model embodiment, comprise local side power supply unit and Remote feeding unit, local side power supply unit comprises AC-DC boosting unit and DC-DC boosting unit, AC-DC boosting unit and the parallel connection of DC-DC boosting unit, and obtain the high voltage direct current of 200-600V after boosting, described Remote feeding unit comprises AC-DC pressure unit and DC-DC pressure unit, AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the low-voltage direct obtaining-48V after step-down exports; The high voltage direct current of described local side power supply unit exports the DC-DC pressure unit of described Remote feeding unit to.
Local side power supply unit and Remote feeding unit carry out data interaction in the form of a carrier wave by high direct voltage cable.
The input of local side power supply unit comprises the-48V that civil power AC220V input and Switching Power Supply or battery export, and both can access separately or access together, and export high voltage direct current 200-600V, the present embodiment is DC380V, flows to far-end through cable;
The input of Remote feeding unit comprises the DC380V that local side power supply unit exports, and civil power AC220V, and both can access separately and also can access together, exports-48V and powers to base station equipment;
As shown in Figure 2, described AC-DC boosting unit, mains input is connected with rectifier circuit, successively be connected on step-up transformer by inductance coil and diode after rectifier circuit rectification, the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
As shown in Figure 3, described DC-DC boosting unit, direct-flow input end is connected with rectifier circuit, is directly connected on step-up transformer after rectifier circuit rectification, and the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
As shown in Figure 4, 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.
As shown in Figure 5, 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, local side and far-end all can adopt the main power supply of mains, and direct current is for subsequent use, reduce direct current high tension transmission loss drawn game terminal voltage and change 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, local side and far-end all can realize simultaneous AC and DC power supply, for equipment provides sufficient electrical energy.
In the utility model, local side supports mains input and low-voltage direct input, input voltage rectifier boost distally can be powered to high direct voltage (200V-600V); 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.In the utility model, local side and far-end all support direct current and the dual input exchanged, support to exchange separately power supply, support that direct current is powered separately, support to exchange main supplying DC for subsequent use, support that the main supply and AC of direct current is for subsequent use, support that AC and DC is powered simultaneously, there is AC/DC mutually back up, improve the features such as equipment power supply capacity, improve the reliability of system power supply, flexibility and power supply capacity, and can electric energy loss be reduced.
The utility model has the following advantages in actual applications:
Local side and far-end support AC and DC dual input, and input mode is flexible, support 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, local side can reduce the electric energy loss that Switching Power Supply is brought; 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;
Office's far-end realizes data interaction by carrier wave on high direct voltage cable, reduces cost, improves the maintainability of product.
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 (6)
1. centralized alternating current-direct current dual input d. c. remote electric power system, it is characterized in that, comprise local side power supply unit and Remote feeding unit, local side power supply unit comprises AC-DC boosting unit and DC-DC boosting unit, AC-DC boosting unit and the parallel connection of DC-DC boosting unit, and obtain the high voltage direct current of 200-600V after boosting, described Remote feeding unit comprises AC-DC pressure unit and DC-DC pressure unit, AC-DC pressure unit and the parallel connection of DC-DC pressure unit, and the low-voltage direct obtaining-48V after step-down exports; The high voltage direct current of described local side power supply unit exports the DC-DC pressure unit of described Remote feeding unit to.
2. the system as claimed in claim 1, is characterized in that, local side power supply unit and Remote feeding unit carry out data interaction in the form of a carrier wave by high direct voltage cable.
3. system as claimed in claim 1 or 2, it is characterized in that, described AC-DC boosting unit, mains input is connected with rectifier circuit, successively be connected on step-up transformer by inductance coil and diode after rectifier circuit rectification, the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
4. system as claimed in claim 1 or 2, it is characterized in that, described DC-DC boosting unit, direct-flow input end is connected with rectifier circuit, be directly connected to after rectifier circuit rectification on step-up transformer, the output of step-up transformer is connected with having polar capacitor and high voltage direct current to export to hold respectively by inductance coil.
5. system as claimed in claim 1 or 2, 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.
6. system as claimed in claim 1 or 2, 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.
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| CN201520390624.9U CN204696682U (en) | 2015-06-08 | 2015-06-08 | Centralized alternating current-direct current dual input d. c. remote electric power system |
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| CN201520390624.9U CN204696682U (en) | 2015-06-08 | 2015-06-08 | Centralized alternating current-direct current dual input d. c. remote electric power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901302A (en) * | 2015-06-08 | 2015-09-09 | 北京宏光星宇科技发展有限公司 | Centralized alternating-current-and-direct-current dual-input direct-current remote power supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104901302A (en) * | 2015-06-08 | 2015-09-09 | 北京宏光星宇科技发展有限公司 | Centralized alternating-current-and-direct-current dual-input direct-current remote power supply system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Centralized AC / DC dual input DC remote power supply system Effective date of registration: 20210708 Granted publication date: 20151007 Pledgee: Beijing technology intellectual property financing Company limited by guarantee Pledgor: BEIJING HONGGUANG XINGYU TECHNOLOGY DEVELOPMENT Co.,Ltd. Registration number: Y2021990000592 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |