CN203761058U - Solar DC grid-connected generation DC-DC special-purpose control device of communication base station - Google Patents
Solar DC grid-connected generation DC-DC special-purpose control device of communication base station Download PDFInfo
- Publication number
- CN203761058U CN203761058U CN201320835009.5U CN201320835009U CN203761058U CN 203761058 U CN203761058 U CN 203761058U CN 201320835009 U CN201320835009 U CN 201320835009U CN 203761058 U CN203761058 U CN 203761058U
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- power supply
- control
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- photovoltaic
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- 238000004891 communication Methods 0.000 title claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims description 8
- 238000005259 measurement Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010248 power generation Methods 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 238000004146 energy storage Methods 0.000 description 3
- 206010042255 Struck by lightning Diseases 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model relates to a solar DC grid-connected generation DC-DC special-purpose control device of a communication base station. The device comprises a lightning protection system, a control system, and a detection system. The lightning protection system is connected in series with the input end of a photovoltaic power supply. The control system comprises a power supply system control switch and a communication power supply counter current prevention system. The detection system comprises a photovoltaic power supply detection and control system. The photovoltaic power supply detection and control system comprises a DC/DC control power supply, a communication voltage acquisition circuit, a photovoltaic voltage acquisition circuit, and a voltage comparison circuit. The acquired communication power supply voltage, the photovoltaic voltage, and the maximum voltage threshold value of the communication power supply are compared, and the photovoltaic power supply detection and control system outputs a control signal to control on-off of a DC power supply relay, so as to control the relay. Beneficial effects of the device are that problems of solar DC grid-connected generation of the communication base station are solved, and solar power generation enables DC grid connection, and electric supply utilization amount of the base station is saved, and objectives of using new energy, and saving energy and reducing emission are achieved. In addition, daily operation cost of the base station is saved.
Description
Technical field
The utility model relates to a kind of communication base station electric controller, particularly a kind of communication base station solar DC DC-DC specialized control equipment that generates electricity by way of merging two or more grid systems.
Background technology
In communication system, the electric power system overwhelming majority of the communications industry adopts alternating current to turn galvanic inversion electric power system, and communication equipment supply voltage used is generally limited in the direct current within the scope of 60v-40v.
The solar powered mode of communication base station is divided into three kinds at present, and the first exchanges grid-connected type photovoltaic system; The second is from net type photovoltaic system; The solar electric power supply system that the third combines with civil power.
Solar energy off-grid system is the solar power system departing from electrical network that utilizes that storage battery carries out energy storage, major control equipment be solar energy from net controller, be the capital equipment that solar electric power is converted to charge in batteries.This equipment can only, from network operation, can not generate electricity by way of merging two or more grid systems.
Wherein, solar grid-connected system is direct current that sun the subject of knowledge and the object of knowledge sends is directly incorporated to local electrical network solar power system through inverter inversion, and major control equipment is solar grid-connected inverter, and this equipment can only be incorporated into the power networks, can not be from network operation.
The solar energy system combining with civil power has two kinds of mode of operations, one civil power mode of priority, and load is preferentially used civil power, uses solar electric power when mains failure, and solar electric power is that civil power supplements; Its two solar electric powers mode of priority, load is preferentially used sun the subject of knowledge and the object of knowledge electricity, uses civil power in the time that solar electric power deficiency or solar energy do not generate electricity, and switches frequently, and system cost is more expensive, and what civil power was solar electric power supplements.Major control equipment is mains hybrid controller, and solar energy is from Running State, and when without civil power or without civil power, solar energy is worked, and needs the energy-storage system of larger capacity.
In addition, the control appliance of protosun energy communication base station electric power system or be combining inverter or for from net controller, it can only be operated in a kind of operating state, during while having civil power or without civil power.Utilize restricted morely with upper type solar energy, efficiency of energy utilization is lower, waste is many.
Summary of the invention
The purpose of this utility model is exactly in view of the foregoing defects the prior art has, and a kind of communication base station solar DC DC-DC specialized control equipment that generates electricity by way of merging two or more grid systems is provided.
Its technical scheme is: comprise lightning-protection system, control system, detection system, and at photo-voltaic power supply input series connection lightning-protection system,
Described control system comprises control of power supply system switch and anti-communication power supply power supply contracurrent system, control of power supply system switch adopts direct current supply relay, the input of direct current supply relay is connected to the output of detection system, the output of direct current supply relay connects counterflow-preventing device, counterflow-preventing device adopts unilateral diode, and unilateral diode is connected in series into power supply circuits; The output of counterflow-preventing device connects photo-voltaic power supply output;
Described detection system comprises photovoltaic power supply measurement and control system, photovoltaic power supply measurement and control system comprises that DC/DC controls power supply, communication voltage acquisition, photovoltaic voltage acquisition, voltage comparator circuit, the ceiling voltage threshold value of the communication power supply voltage collecting, photovoltaic voltage, communication power supply is compared, the switch of output control signal control direct current supply relay, and then control.
The input of the output signal inverter in parallel of above-mentioned detection system, the output of signal inverter connects electrostatic discharge relay and electrostatic discharge circuit.
The beneficial effects of the utility model are: the problem that has solved the grid-connected power supply of communication base station solar DC, make solar power generation can direct current grid-connected, can save the civil power power consumption of base station, reach the object of utilizing new forms of energy, energy-saving and emission-reduction, can also save in addition the day-to-day operation cost of base station.
Brief description of the drawings
Accompanying drawing 1 is schematic diagram of the present utility model;
Accompanying drawing 2 is that circuit of the present utility model connects block diagram.
Embodiment
By reference to the accompanying drawings 1 and 2, the utility model will be further described:
The utility model comprises lightning-protection system, control system, detection system, at photo-voltaic power supply input series connection lightning-protection system, described control system comprises control of power supply system switch and anti-communication power supply power supply contracurrent system, control of power supply system switch adopts direct current supply relay, the input of direct current supply relay is connected to the output of detection system, the output of direct current supply relay connects counterflow-preventing device, and counterflow-preventing device adopts unilateral diode, and unilateral diode is connected in series into power supply circuits; The output of counterflow-preventing device connects photo-voltaic power supply output;
Described detection system comprises photovoltaic power supply measurement and control system, photovoltaic power supply measurement and control system comprises that DC/DC controls power supply, communication voltage acquisition, photovoltaic voltage acquisition, voltage comparator circuit, the ceiling voltage threshold value of the communication power supply voltage collecting, photovoltaic voltage, communication power supply is compared, the switch of output control signal control direct current supply relay, and then control.
The input of the output signal inverter in parallel of above-mentioned detection system, the output of signal inverter connects electrostatic discharge relay and electrostatic discharge circuit.
Operation principle of the present utility model is as follows:
(1) positive and negative polarities of the supply line of photovoltaic solar Power Supply Assembly are connected in series the positive and negative two ends to lightning-protection system, the control switch direct current supply relay of lightning-protection system inner lead access electric power system;
(2) the ceiling voltage threshold value of the communication power supply voltage collecting, photovoltaic voltage, communication power supply is compared by voltage rate of exchange device, be greater than communication voltage when meeting photovoltaic voltage, when communication power supply voltage is less than communication power supply threshold value reference voltage condition, output HIGH voltage control signal, otherwise output LOW voltage control signal;
The setting of ceiling voltage: taking the high threshold voltage of communication power supply energy storage device (storage battery) float charge voltage as benchmark, by after the floating 1% of high threshold voltage, be set as reference voltage;
(3) when the signal of voltage comparator output is high voltage, while being greater than 5v, this control signal starts direct current supply relay, and photo-voltaic power supply starts power supply; When this signal is low-voltage while being less than 5v, this control signal is closed direct current supply relay, and photo-voltaic power supply is closed power supply;
(4) signal of voltage comparator output, after signal inverter conversion, generates discharge circuit relay control signal, for controlled discharge circuit; In the time that voltage comparator output signal is high voltage, this signal is low-voltage, closes discharge circuit relay, reduces photovoltaic electric energy loss; In the time that voltage comparator output signal is low-voltage, this signal is high voltage, opens discharge circuit relay, reduces the too high problem of open circuit voltage that photovoltaic electric source causes because of open circuit;
In step (3), the output of direct current supply relay connects counterflow-preventing device, and counterflow-preventing device adopts unilateral diode, and unilateral diode is connected in series into power supply circuits; The output of counterflow-preventing device connects photo-voltaic power supply output.
Requirement of the present utility model be explained as follows:
The combination requirement of a, photovoltaic solar Power Supply Assembly, because the voltage range requirement of the p-48V DC power supply of communication electric power system is-40V ~-57V, so the load voltage parameter request of the series system that photovoltaic solar cell assembly forms is <70V.
B, photovoltaic solar Power Supply Assembly series system outdoor layout; at the overcast and rainy effects of lightning that is very easily subject to; for ensureing communication device safety; the present invention has increased lightning protection function at photovoltaic solar for power conversion system, and the overload current that is incorporated into communication electric power system because being struck by lightning, overload voltage that this partial function can be good at solar module are isolated and blocks.
C, whether meet communication system power supply requirement for the condition of power supply that effectively detects photovoltaic solar Power Supply Assembly, the method has designed the power supply measuring ability of photovoltaic solar Power Supply Assembly, whether the condition of power supply that this power supply measuring ability can detect photovoltaic module meets the demands, and can subdue again the open circuit high voltage of the moment forming at photovoltaic module power supply positive and negative polarities because of photovoltaic module electric power system open circuit.In the time that photovoltaic module is powered, whether the condition of power supply that this system can detect photovoltaic module meets continued power requirement, detects when abnormal, cuts off being connected between photovoltaic module and communication power supply; In the time guaranteeing to meet communication condition of power supply, open power switch simultaneously.
D, do not possess at photovoltaic solar Power Supply Assembly under the condition of power supply, for preventing that the electric power of indoor communications electric power system from feeding back in photovoltaic solar Power Supply Assembly system, the method has designed the function of anti-communication power supply adverse current photovoltaic solar Power Supply Assembly, and this function can effectively prevent that current feedback is to photovoltaic solar Power Supply Assembly system.
Claims (2)
1. the communication base station solar DC DC-DC specialized control equipment that generates electricity by way of merging two or more grid systems, is characterized in that: comprise lightning-protection system, control system, detection system, and at photo-voltaic power supply input series connection lightning-protection system,
Described control system comprises control of power supply system switch and anti-communication power supply power supply contracurrent system, control of power supply system switch adopts direct current supply relay, the input of direct current supply relay is connected to the output of detection system, the output of direct current supply relay connects counterflow-preventing device, counterflow-preventing device adopts unilateral diode, and unilateral diode is connected in series into power supply circuits; The output of counterflow-preventing device connects photo-voltaic power supply output;
Described detection system comprises photovoltaic power supply measurement and control system, photovoltaic power supply measurement and control system comprises that DC/DC controls power supply, communication voltage acquisition, photovoltaic voltage acquisition, voltage comparator circuit, the ceiling voltage threshold value of the communication power supply voltage collecting, photovoltaic voltage, communication power supply is compared, the switch of output control signal control direct current supply relay, and then control.
2. the communication base station solar DC according to claim 1 DC-DC specialized control equipment that generates electricity by way of merging two or more grid systems, it is characterized in that: the input of the output signal inverter in parallel of described detection system, the output of signal inverter connects electrostatic discharge relay and electrostatic discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835009.5U CN203761058U (en) | 2013-12-18 | 2013-12-18 | Solar DC grid-connected generation DC-DC special-purpose control device of communication base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835009.5U CN203761058U (en) | 2013-12-18 | 2013-12-18 | Solar DC grid-connected generation DC-DC special-purpose control device of communication base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203761058U true CN203761058U (en) | 2014-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320835009.5U Expired - Lifetime CN203761058U (en) | 2013-12-18 | 2013-12-18 | Solar DC grid-connected generation DC-DC special-purpose control device of communication base station |
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| Country | Link |
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| CN (1) | CN203761058U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730909A (en) * | 2013-12-18 | 2014-04-16 | 山东华岳节能技术开发有限公司 | Communication base station solar energy direct-current grid-connection power generation DC-DC special control device and method |
| CN105391087A (en) * | 2015-12-13 | 2016-03-09 | 北京风光天赋科技有限公司 | Intelligent energy-saving system applied to photovoltaic power station |
-
2013
- 2013-12-18 CN CN201320835009.5U patent/CN203761058U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103730909A (en) * | 2013-12-18 | 2014-04-16 | 山东华岳节能技术开发有限公司 | Communication base station solar energy direct-current grid-connection power generation DC-DC special control device and method |
| CN103730909B (en) * | 2013-12-18 | 2016-12-07 | 国网山东省电力公司菏泽供电公司 | Communication base station solar DC generates electricity by way of merging two or more grid systems DC-DC specialized control equipment and method |
| CN105391087A (en) * | 2015-12-13 | 2016-03-09 | 北京风光天赋科技有限公司 | Intelligent energy-saving system applied to photovoltaic power station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181203 Address after: Room 301, 333 Lane 1, Jinlan Road, Jiading District, Shanghai 200000 Patentee after: Xingqun Power Group Co.,Ltd. Address before: No. 661 Canal Road, Dongying District, Dongying City, Shandong Province, 257000 Patentee before: Cao Geng |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140806 |
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| CX01 | Expiry of patent term |