CN204349576U - A kind of d. c. remote electric power system alterating and direct current seamless switching device - Google Patents
A kind of d. c. remote electric power system alterating and direct current seamless switching device Download PDFInfo
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- CN204349576U CN204349576U CN201520064604.2U CN201520064604U CN204349576U CN 204349576 U CN204349576 U CN 204349576U CN 201520064604 U CN201520064604 U CN 201520064604U CN 204349576 U CN204349576 U CN 204349576U
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Abstract
The utility model discloses a kind of d. c. remote electric power system alterating and direct current seamless switching device, this device comprises direct current switch unit and alternating current switch unit, powers after described direct current switch unit is in parallel with described alternating current switch unit through cable transmission to remote equipment group; The output voltage of the direct current output module of described direct current switch unit is lower than the output voltage of the AC output module of described alternating current switch unit.A kind of d. c. remote electric power system alterating and direct current seamless switching device that the utility model provides, adopt to exchange and power with direct current dual input, electric power system reliability is provided, when introducing civil power, civil power exports after isolation boosting, is Remote feeding by civil power, after electric main disconnects, far-end transfers direct current input to, realizes alternating current-direct current seamless switching, ensures the stability of power supply.
Description
Technical field
The utility model relates to alterating and direct current switching device shifter technical field, particularly a kind of d. c. remote electric power system alterating and direct current seamless switching device.
Background technology
The safe power supply that d. c. remote electric power system is mobile communications network, the remote access device of Integrated access network provides 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 is at more than 2Km, and cause increasing the loss of electric energy loss on cable and transmission facility, cost is very high; And the reasons such as d. c. remote electrical transfer line fault, local side machine room power failure, battery discharging quantity not sufficient all can cause Remote feeding voltage to reduce or power-off, cause the communication websites such as whole RRU not work, communicating interrupt.
For reducing electric energy loss, extending transmission facility useful life, reduce Transmission Cost, and when supply line's fault and maintenance, can ensure that the equipment such as RRU normally work, need configuration alternating current-direct current switching device shifter, realize the variation to Remote feeding type.
There is following technical problem in the alternating current-direct current switching device shifter of current application:
1, directly civil power AC is inputted far-end, voltage is stable not, and the power ratio that alternating current-direct current switches is lower, and power maintains about 600W, affects service life of equipment;
2, when alternating current-direct current switches, it is low that far-end output voltage there will be of short duration voltage, and 0 voltage time > 50ms, causes the equipment such as rear end RUU to be restarted;
3, during independent Alternating Current Power Supply, far-end input voltage range is narrow, end input voltage > 190VAC, and PF value is about 0.6, and energy conversion efficiency is low;
4, when alternating current-direct current switches, breakpoint breaks not open, and may produce arcing or DC loop and to break not open phenomenon.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of d. c. remote electric power system alterating and direct current seamless switching device, alternating current and direct current seamless switching can be realized, seamless switching refers to as the equipment supply power voltages such as RRU there will not be power failure or voltage lower than the situation of 43V, because during lower than 43V, RRU device cisco unity malfunction, ensures that disconnected direct current or stream of breaking off a friendship there will not be the situation of breaking not open; In alternating current-direct current handoff procedure, voltage there will not be and falls phenomenon.
A kind of d. c. remote electric power system alterating and direct current seamless switching device that the utility model provides, this device comprises direct current switch unit and alternating current switch unit, powers after described direct current switch unit is in parallel with described alternating current switch unit through cable transmission to remote equipment group;
Described direct current switch unit comprises local side input module, isolation boosting power supply and direct current output module; Described local side input module is connected with the input of isolation boosting power supply, is connected after described isolation boosting power boost through lead-out terminal with direct current output module, and described direct current output module connects the first diode;
Described alternating current switch unit comprises civil power input module, rectifier bridge, AC boosting circuit module and AC output module; Described civil power input module is connected with the input of rectifier bridge, and the output of described rectifier bridge is connected with AC boosting circuit module, and the output of described AC boosting circuit module connects AC output module, and described AC output module connects the second diode;
The output voltage of described direct current output module is lower than the output voltage of described AC output module.
Further, the magnitude of voltage of described local side input module input is-43V.
Further, the magnitude of voltage of described civil power input module input is AC220V.
Further, the magnitude of voltage that described direct current output module exports is DC380V.
Further, the magnitude of voltage that described AC output module exports is DC390V.
Further, described AC boosting circuit module comprises the multiple shunt inductances connected in turn, multiple parallel field effect pipe, multiple parallel diode, multiple shunt capacitance and insulating power supply.
Further, described remote equipment group is connected with base station RRU device group.
Further, described remote equipment output rated voltage is 53.5V.
Compared with prior art, the beneficial effects of the utility model are:
Realized the real-time monitoring of input voltage by signal wiring, when civil power meets job requirement, civil power is introduced, and civil power exports after isolation boosting, is Remote feeding by civil power; After electric main disconnects, far-end transfers direct current input to, realizes alternating current-direct current seamless switching, ensures the stability of power supply, and when solving the introducing of conventional art civil power, the situation and the far-end that there will be power-off export the technical problem of falling voltage.
1, exchange through isolation boosting, make AC input range expand as 100VAC-280VAC, the PF of interchange is higher than 0.99, and far-end exports 3000W (now the rear end of PFC exports 3000W).Ensure that the stable running of the normal safe of Alternating Current Power Supply.
2, when Alternating Current Power Supply and direct current supply, preferentially alternating current is used; The voltage that direct current switch unit 1 exports is DC380V, and the voltage that alternating current switch unit 2 exports is DC390V, so preferentially use alternating current when alternating current and direct current are powered simultaneously.
3, without under communicational aspects, direct current is directly powered, and far-end output voltage is steady, ripple disable.
This device adopts to exchange and powers with direct current dual input, provides electric power system reliability.
Accompanying drawing explanation
Fig. 1 is d. c. remote electric power system alterating and direct current seamless switching device structural representation;
Fig. 2 is direct current switch unit structural representation;
Fig. 3 is alternating current switch unit structural representation.
Embodiment
To further illustrate the utility model below:
As shown in Figure 1, the utility model provides a kind of d. c. remote electric power system alterating and direct current seamless switching device, alternating current and direct current seamless switching can be realized, seamless switching refers to as the equipment supply power voltages such as RRU there will not be power failure or voltage lower than the situation of 43V, because during lower than 43V, RRU device cisco unity malfunction, ensures that disconnected direct current or stream of breaking off a friendship there will not be the situation of breaking not open; In alternating current-direct current handoff procedure, voltage there will not be and falls phenomenon.
A kind of d. c. remote electric power system alterating and direct current seamless switching device that the utility model provides, this device comprises direct current switch unit 1 and alternating current switch unit 2, is transferred to remote equipment group 4 powers after described direct current switch unit 1 is in parallel with described alternating current switch unit 2 through cable 3; Described remote equipment group is n, n be more than or equal to 1 integer.
Described direct current switch unit 1 comprises local side input module 11, isolation boosting power supply 12 and direct current output module 13; Described local side input module 11 is connected with the input of isolation boosting power supply 12, and described isolation boosting power supply 12 is connected with direct current output module 13 through lead-out terminal after boosting, and described direct current output module 13 connects the first diode 14;
Described alternating current switch unit 2 comprises civil power input module 21, rectifier bridge 22, AC boosting circuit module 23 and AC output module 24; Described civil power input module is connected with the input of rectifier bridge, and the output of described rectifier bridge is connected with AC boosting circuit module, and the output of described AC boosting circuit module connects AC output module, and described AC output module connects the second diode 25;
The output voltage of described direct current output module 13 is lower than the output voltage of described AC output module 24.
Described first diode 14 and described second diode 25 shield, and prevent reverse charging.
Further, the magnitude of voltage of described local side input module input is-43V.
Further, the magnitude of voltage of described civil power input module input is AC220V.
Further, the magnitude of voltage that described direct current output module exports is DC380V.
Further, the magnitude of voltage that described AC output module exports is DC390V.
Further, described AC boosting circuit module 23 comprise connect in turn multiple shunt inductance T1, multiple parallel field effect pipe VT1, multiple parallel diode D1, multiple shunt capacitance C1 and insulating power supply DC/DC.Quantity can be selected voluntarily according to output voltage values.
Further, described remote equipment group 4 is connected with base station RRU device group 5.
Described base station RRU device group is m, m be more than or equal to 1 integer.
Further, described remote equipment output rated voltage is 53.5V.
Compared with prior art, the beneficial effects of the utility model are:
Realized the real-time monitoring of input voltage by signal wiring, when civil power meets job requirement, civil power is introduced, and civil power exports after isolation boosting, is Remote feeding by civil power; After electric main disconnects, far-end transfers direct current input to, realizes alternating current-direct current seamless switching, ensures the stability of power supply, and when solving the introducing of conventional art civil power, the situation and the far-end that there will be power-off export the technical problem of falling voltage.
1, exchange through isolation boosting, make AC input range expand as 100VAC-280VAC, the PF of interchange is higher than 0.99, and far-end exports 3000W (now the rear end of PFC exports 3000W).Ensure that the stable running of the normal safe of Alternating Current Power Supply.
2, when Alternating Current Power Supply and direct current supply, preferentially alternating current is used; The voltage that direct current switch unit 1 exports is DC380V, and the voltage that alternating current switch unit 2 exports is DC390V, so preferentially use alternating current when alternating current and direct current are powered simultaneously.
3, without under communicational aspects, direct current is directly powered, and far-end output voltage is steady, ripple disable.
This device adopts to exchange and powers with direct current dual input, provides electric power system reliability.
Be only several specific embodiment of the present utility model above, but the utility model is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection range of the present utility model.
Claims (8)
1. a d. c. remote electric power system alterating and direct current seamless switching device, it is characterized in that, this device comprises direct current switch unit and alternating current switch unit, powers after described direct current switch unit is in parallel with described alternating current switch unit through cable transmission to remote equipment group;
Described direct current switch unit comprises local side input module, isolation boosting power supply and direct current output module; Described local side input module is connected with the input of isolation boosting power supply, is connected after described isolation boosting power boost through lead-out terminal with direct current output module, and described direct current output module connects the first diode;
Described alternating current switch unit comprises civil power input module, rectifier bridge, AC boosting circuit module and AC output module; Described civil power input module is connected with the input of rectifier bridge, and the output of described rectifier bridge is connected with AC boosting circuit module, and the output of described AC boosting circuit module connects AC output module, and described AC output module connects the second diode;
The output voltage of described direct current output module is lower than the output voltage of described AC output module.
2. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, is characterized in that, the magnitude of voltage of described local side input module input is-43V.
3. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, is characterized in that, the magnitude of voltage of described civil power input module input is AC220V.
4. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, is characterized in that, the magnitude of voltage that described direct current output module exports is DC380V.
5. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, is characterized in that, the magnitude of voltage that described AC output module exports is DC390V.
6. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, it is characterized in that, described AC boosting circuit module comprises the multiple shunt inductances connected in turn, multiple parallel field effect pipe, multiple parallel diode, multiple shunt capacitance and insulating power supply.
7. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 1, it is characterized in that, described remote equipment group is connected with base station RRU device group.
8. a kind of d. c. remote electric power system alterating and direct current seamless switching device as claimed in claim 7, it is characterized in that, described remote equipment output rated voltage is 53.5V.
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| CN201520064604.2U CN204349576U (en) | 2015-01-29 | 2015-01-29 | A kind of d. c. remote electric power system alterating and direct current seamless switching device |
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| CN201520064604.2U CN204349576U (en) | 2015-01-29 | 2015-01-29 | A kind of d. c. remote electric power system alterating and direct current seamless switching device |
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Cited By (4)
| 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 |
| CN105048596A (en) * | 2015-08-27 | 2015-11-11 | 北京宏光星宇科技发展有限公司 | Hybrid charging and discharging control device for storage battery packs |
| CN106412723A (en) * | 2016-08-30 | 2017-02-15 | 江苏省邮电规划设计院有限责任公司 | RRU (Radio Remote Unit) intelligent power supply device used in 4G communication system |
| CN113765678A (en) * | 2020-06-04 | 2021-12-07 | 华为技术有限公司 | Equipment control method and equipment, and communication system |
-
2015
- 2015-01-29 CN CN201520064604.2U patent/CN204349576U/en active Active
Cited By (6)
| 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 |
| CN105048596A (en) * | 2015-08-27 | 2015-11-11 | 北京宏光星宇科技发展有限公司 | Hybrid charging and discharging control device for storage battery packs |
| CN106412723A (en) * | 2016-08-30 | 2017-02-15 | 江苏省邮电规划设计院有限责任公司 | RRU (Radio Remote Unit) intelligent power supply device used in 4G communication system |
| CN106412723B (en) * | 2016-08-30 | 2019-06-25 | 中通服咨询设计研究院有限公司 | One kind RF processing unit intelligent power supply used in 4G communication system |
| CN113765678A (en) * | 2020-06-04 | 2021-12-07 | 华为技术有限公司 | Equipment control method and equipment, and communication system |
| CN113765678B (en) * | 2020-06-04 | 2022-06-28 | 华为技术有限公司 | Equipment control method and equipment, and communication system |
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