CN109088435A - A kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field - Google Patents
A kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
Abstract
This patent discloses a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensors applied to communication base station field, mainly by distributed generation resource (19), energy-storage battery (20), alternating current-direct current mixing parallel connection type energy router (8), direct current transducer (15), reverse current protection ac sensor (18) and are connected in parallel channel (P1, P2, P3, P4, P5 leading-out end line) and form；And using two-way in parallel, the unidirectional main connection framework in parallel of DC bus of ac bus, according to composite factors such as load importance rate, distributed generation resource (19), energy-storage battery (20), loading demands, control strategy is executed by alternating current-direct current mixing parallel connection type energy router (8), realize the multipath alternating current-direct current hybrid power supply towards classification load and different periods, the power supply structure and energy-storage standby supportability for optimizing communication base station improve the clean energy resource access ratio of communication base station and largely improve power supply reliability.
Description
Technical field
This patent is a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field, is suitable for existing alternating current
The communication base station of power supply is, it can be achieved that micro- electricity with mains bus and the timesharing of inside of base station DC bus or parallel running simultaneously
Net composite power supply system.
Background technique
Micro-capacitance sensor is built based on localized power distribution net, and all kinds of distributed energies such as wind, light, natural gas are provided multiple forms of energy to complement each other, tool
Ratio is accessed for higher new energy electric power, by energy storage and the production of realization indigenous energy can be distributed rationally and use energy load basic
Balance has higher stability and reliability more controllably can also be flexible with public electric wire net as needed than distributed energy
Interaction, and it is capable of the intelligent comprehensive utilization of energy local area network of relatively independent operation.Micro-capacitance sensor can substantially effectively play distribution
Formula clean energy resource potentiality, it is unfavorable to reduce that distributed generation resource (19) capacity is small, generated output is unstable, independently-powered reliability is low etc.
Factor, it is ensured that electric power netting safe running is the useful supplement of bulk power grid；Micro-capacitance sensor can promote the upgrading of conventional industries, from
Economic and environment-friendly angle can also play a great role.
One important function of micro-capacitance sensor energy-storage battery (20) is exactly smooth photovoltaic or other unstable distributions that generate electricity
The electric power of power supply (19) exports, and promotes photovoltaic power generation power quality；Meanwhile there are tou power price and time-of-use tariffs are reasonable in alternating current
The base station of price differential can use the paddy electricity period of low price for micro-capacitance sensor energy-storage battery (20) charging, in the rush hour of high price
Section makes energy-storage battery (20) to load discharge, reduces user power utilization cost, reduces power grid peak valley period degree of unbalancedness, support and
Improve the economical operation ability of power grid at times.
Currently, communication base station room power supply is generally provided by alternating current, and the reliability of commercial power supply is by Changes in weather and ground
The variation of manage bar part is affected, in earthquake, high wind, heavy rain, high temperature and low temperature, non-natural sexual factor on conditions such as power supply influences
Under, the response of base station power supply safety processing work is more passive, relies heavily on the Dai Weigong after accident or after failure
It takes charge of response speed and Field Force's quality, inspection and emergency service cost is very high；48V as communication emergency power supply communicates standby
Battery, since the work many years emergency service time shortens, faces aging and moves back the problem of taking, the emergency service time is short, faces and moves back clothes
Communication backup battery base station when being no longer satisfied existing power grid abnormal work power demands, to be loaded to base station communication
Reliability service propose very big challenge；Meanwhile 3 big operator and steel tower company existing room facility related facility overhaul year
Limit, computer room battery periodic maintenance degree and the life of storage battery update or management, has become more more and more urgent influence operation
The outstanding problem of quotient and steel tower company service underlying security.
Communication base station is the important place for building and arranging the core equipment of mobile communication system or communication network, is belonged to
In national basis strategic communicaton facility, more clean energy resourcies are introduced by micro-capacitance sensor technology, improves its energy resource structure, enhance its use
Electrical stability and backup power supply supportability have important social effect and economic significance.
This patent is the micro-capacitance sensor technology upgrading carried out to current existing communication base station power supply system, is supplied in original alternating current
Using two-way in parallel, the unidirectional main connection framework in parallel of DC bus of ac bus on the basis of electric system circuit, increase micro-
The AC and DC channel of power grid parallel connection enhances peak-valley difference utilization benefit, reduces electric cost, extends existing communication standby electricity
The service life in pond；Meanwhile by farthest introducing clean energy resource, the energy resource structure of base station electricity consumption is improved, its use is being enhanced
While electrical stability and reliability, the classification backup power supply supportability towards classification load is significantly improved.
Existing patent and document comparison:
1. a kind of multipotency interconnects alternating current-direct current mixing micro-capacitance sensor system: publication number CN206388228U, utility model patent is main
It is however emphasized that the multiple-energy-source to AC, DC bus accesses main topology, system complex does not have real time load operation characteristic.Comparison is originally special
Benefit, emphasis are based on energy router, there is important interface and function description, energy-storage battery charging, the straight AC load power supply of a second level
There are orders of priority, have real-time monitoring characteristic, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
2. the two-way DC-AC interconnect device intelligent control method of alternating current-direct current mixing micro-capacitance sensor: publication number CN106786599A,
Patent of invention mainly emphasizes the control software implementation method of two-way AC-DC current transformer.This patent is compared, emphasis is based on base station
The improvement of power supply, to the access of alternating current-direct current power supply and distribution, there are orders of priority.
3. a kind of alternating current-direct current mixing micro-capacitance sensor system: publication number CN20CN204316103U4316103U, utility model are main
It to apply for DC bus, the plug-in a variety of loads of ac bus and the energy, system complex in middle pressure 400VDC bus-bar system,
Emphasis alternating current-direct current load supplying is without priority.This patent is compared, is based on energy router, emphasis is directed to base station low-voltage direct
48V bus-bar system and exchange 220/380V bus-bar system, wherein multi-functional DC-DC module (13) has at least three port, to one
There are orders of priority for the straight AC load power supply of second level, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
4. a kind of alternating current-direct current mixing micro-capacitance sensor system and its control strategy: publication number CN104505867A, patent of invention are main
It to apply for DC bus, the plug-in a variety of loads of ac bus and the energy, system complex in middle pressure 400VDC bus-bar system,
Emphasis alternating current-direct current load supplying is without priority.This patent is compared, is based on energy router, emphasis is directed to base station low-voltage direct
48V bus-bar system and exchange 220/380V bus-bar system, wherein multi-functional DC-DC module (13) has at least three port, to one
There are orders of priority for the straight AC load power supply of second level, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
5. the alternating current-direct current mixing micro-capacitance sensor system based on distributed bus structure: publication number CN205429765U is practical new
Type is the topology of a kind of two-stage DC bus, 1 ac bus, is converted by the bi-directional DC-DC of 12 port, 12
The AC-AC of mouth is converted.This patent is compared, is based on energy router, emphasis is directed to base station low-voltage direct 48V bus-bar system
And exchange 220/380V bus-bar system directly exchanges a second level wherein multi-functional DC-DC module (13) has at least three port
There are orders of priority for load power supply, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
6. a kind of more bus residential blocks power supply system based on alternating current-direct current mixing micro-capacitance sensor: publication number CN205489531U,
Utility model is the topology of a kind of three-level DC bus, 1 ac bus, is turned by the bi-directional DC-DC of 12 port
Change, 12 mouthfuls of AC-AC is converted.This patent is compared, is based on energy router, emphasis is directed to base station low-voltage direct 48V
Bus-bar system and exchange 220/380V bus-bar system, wherein multi-functional DC-DC module (13) has at least three port, to one or two
There are orders of priority for the straight AC load power supply of grade, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
7. the system and method powered using new-energy automobile to communication base station: publication number CN107171400A, invention are special
Benefit is the system and method powered using new-energy automobile to communication base station, mainly for the direct current supply of the part DC-DC, nothing
Alternating Current Power Supply explanation.This patent is compared, emphasis is based on energy router, there is light storage unit, straight to energy-storage battery charging, a second level
There are orders of priority for AC load power supply, have real-time monitoring characteristic, and have the function of having peak-clipping and valley-filling to exchange electricity consumption.
8. communication base station power supply system: priority control is not present in publication number CN102142793A, patent of invention, load supplying
System, to the composition of main control unit without detailed description.This patent is compared, is to have important interface and function to retouch based on energy router
It states, energy-storage battery charge and discharge, the straight AC load power supply of a second level have real-time monitoring characteristic there are order of priority, and have to friendship
Stream electricity consumption has the function of peak-clipping and valley-filling.
9. a kind of communication base station energy storage for power supply system: publication number CN206506347U, utility model, load supplying are not present
Two priority classes need to be exported again after energy-storage battery unit to load, have electricity to illustrate without peak-clipping and valley-filling exchange electricity consumption, in parallel
Point exchanges side in base station.This patent is compared, is that important interface and function description, energy-storage battery charge and discharge are had based on energy router
There are order of priority, supplied by AC/DC electricity for the straight AC load power supply of electricity, a second level, and have the function for having peak-clipping and valley-filling to exchange electricity consumption
Can, parallel connection point is in base station switch power supply AC and DC bus bar side.
10. communication base station photovoltaic bipolar power supply system: publication number CN206559137U, utility model, alternating current power off,
It is completely dependent on the battery pack of existing base station when photovoltaic does not work, only supports direct current emergency service, the crash time is influenced by battery pack
Greatly.Compare this patent, be based on energy router, can external additional energy storage to support micro-capacitance sensor, have important interface and function
Description, there are order of priority, supplied by AC/DC electricity simultaneously has to exchange use for energy-storage battery charge and discharge, the straight AC load power supply of a second level
Electricity has the function of peak-clipping and valley-filling, and tool reverse current protection proof load maximizes local consumption function.
11. communication base station hybrid power supply and energy-storage system: publication number CN206135525U, utility model increase 1 power supply newly
Point access in parallel in electric main side, to wind/light complementation controller without specific implementation block diagram, newly-increased 2 power sources in parallel points exist respectively
Base station low-voltage direct 48V bus, electric supply meter exchange the 220/380V bus before base station switch power supply between.Comparison is originally special
Benefit is that have important interface and function description based on energy router, and DC interface such as energy-storage battery charging, a second level directly exchange
There are orders of priority for load power supply, and have the function of having peak-clipping and valley-filling to exchange electricity consumption, and tool reverse current protection proof load is maximum
Change local consumption function.
12. communication base station new energy system optimization example of modification is analyzed: " China's Telecommunication's energy conference in 2017 "
2017/9/7 BeiJing, China TN929.5 mainly carries out table to the DC bus powered and power load exemplary application of base station power supply
State, specifically to how to deploy each energy without specific implementation describe.This patent is compared, is that emphasis is based on energy router, has important
Interface and function description, energy-storage battery charging, there are orders of priority for the straight AC load power supply of a second level, have real-time monitoring characteristic,
And there is the function of having peak-clipping and valley-filling to exchange electricity consumption.
13. distributed generation resource accessing user and user side micro-capacitance sensor bidirectional electric energy measurement problem _ Shen exhibition: " south electric network skill
Art " phase (https: //wenku.baidu.com/view/ of volume 9 the 4th end of the year 2015
293a98f66394dd88d0d233d4b14e852459fb3957.html) emphasize that family is measured, not forceful electric power power supply mode.It is right
It is that emphasis is based on energy router than this patent, there is important interface and function description, energy-storage battery charging, a second level directly exchanges
There are orders of priority for load power supply, have real-time monitoring characteristic, and have the function of having electric peak-clipping and valley-filling to exchange electricity consumption.
Summary of the invention
A kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field, mainly by distributed generation resource (19),
Energy-storage battery (20), alternating current-direct current mixing parallel connection type energy router (8), direct current transducer (15), reverse current protection ac sensor
(18) and be connected in parallel channel (P1, P2, P3, P4, P5 leading-out end line) composition；And using two-way in parallel, the direct current mother of ac bus
The unidirectional main connection framework in parallel of line, needs according to load importance rate, distributed generation resource (19), energy-storage battery (20), load
It the composite factors such as seeks, control strategy is executed by alternating current-direct current mixing parallel connection type energy router (8), realize towards classification load
With the multipath alternating current-direct current hybrid power supply of different periods, the power supply structure and energy-storage standby supportability of communication base station are optimized,
It improves the clean energy resource access ratio of communication base station and largely improves power supply reliability.
Wherein, alternating current-direct current mixing parallel connection type energy router (8) is mainly by switch 2 (9), electric energy meter (10,16), two
It is pole pipe (11), energy router control module module (12), multi-functional DC/DC module (13), two-way AC/DC module (14), more
MPPT-DC/DC module (17) composition, what correspondence was connected in parallel channel (P1, P2, P3, P4, P5 leading-out end line) is two-way exchange function
Rate and network interface (P1), Unidirectional direct-current power output interface (P2), sensor signal interface (P3), distributed electrical source interface
(P4), energy-storage battery interface (P5).
Wherein, the power supply system of original base station includes power distribution network (1), distribution transformer (2), switch 1 (3), user's exchange
Ammeter (4), base station switch power supply/rectification module (5), communication backup battery (6), multi-channel DC load (7-1), other exchanges are negative
It carries (7-2).Wherein bus 1 (AC220/380V) is defined between power distribution network (1) and distribution transformer (2), bus 2
(AC220/380V) user's AC ammeter (4) and base station switch power supply/rectification module (5), other AC loads (7-2) are defined on
Exchange input between, bus 3 (the specified DC48V of Ve/) is defined on base station switch power supply/rectification module (5) direct current output
With communicate between backup battery (6).
Wherein, bus 4 (Vs/DC) is defined between the output and bus 3 of Unidirectional direct-current power output interface (P2),
The output signal of Unidirectional direct-current power output interface (P2) is defined as first order load energy-storage standby output (direct current), two-way exchange
Power and the two-way signaling between network interface (P1) and bus 2 are defined as two stage load peak-valley differences using output (exchange).
Wherein, direct current transducer (15) is connected between communication backup battery (6) and multi-channel DC load (7-1), inversion
Protection D.C mutual-inductor (19) is connected between user's AC ammeter (4) and bus 2, and utilizes output in two stage load peak-valley differences
Before (exchange) two-way signaling；First order load energy-storage standby output (direct current) is connected in parallel on original direct current output bus 3, second level
Load peak-valley difference is connected in parallel on original bus 2 using output (exchange) signal, as alternating current-direct current bus Parallel Design.
Wherein, 4 voltage of bus is higher than bus 3, and two stage load peak-valley differences are higher than bus 2 using output (exchange) voltage, more
Port (P5-1......N) voltage of MPPT-DC/DC (1......N) output is higher than two-way AC/DC (17) output port (P5-
G voltage).
Wherein, alternating current-direct current mixing parallel connection type energy router (8) has merged photovoltaic distributed power input, energy-storage units
Interface, Electro-metering unit have the function to the alternating current-direct current power regulation of one or two stage loads of output and control and Electro-metering
Energy；Its two-way exchange power and network interface (P1) are bidirectional interface, both can obtain electric energy from power grid, and can also realize to grid side
Input, can transmit bidirectional energy stream, it can be achieved that from bus 2 → alternating current-direct current mixing parallel connection type energy router (8) → energy storage
The charging of battery (20) and opposite direction by energy-storage battery (20) → alternating current-direct current mixing parallel connection type energy router (8) → bus
2 discharging functions.Unidirectional direct-current ammeter (10), based on the direct current measurement by unidirectionally transmitting electricity to first order load to DC bus 3 carries out
Amount.Power supply of the user's AC ammeter (4) for AC distribution net (1) is measured.Two-way exchange ammeter (16) is used for from bus 2
It exchanges the electricity of electricity side-draw and exchanges the electricity that side is discharged to bus 2 and carry out bidirectional measuring.
The advantage of this patent is:
1, the buffer function realized by alternating current-direct current mixing parallel connection type micro-capacitance sensor energy storage configuration, is greatly improved distribution
The power output stability of power supply (19) (photovoltaic or wind-power electricity generation etc.) improves clean energy resource resource access ratio and utilization efficiency.
2, voltage, the electric current for passing through reverse current protection D.C mutual-inductor (18) Sample AC side, by alternating current-direct current mixing parallel connection type
Energy router (8), which is calculated, implements control to energy-storage battery (20) discharge power, it can be achieved that guaranteeing that discharge can be all by local
Load consumption is realized without adverse current operation and source lotus storage balance.
3, in the application scenarios that can not introduce distributed generation resource (19), electricity consumption can be realized by two-way AC/DC module (14)
Peak-valley difference utilizes, and can suitably reduce time-of-use tariffs overall expenses.
4, the power supply control strategy that alternating current-direct current mixing parallel connection type micro-capacitance sensor uses is preferentially to use including photovoltaic power generation
Distributed clean energy resource, secondly alternating current, generated electricity surplus by energy-storage battery (20) electric discharge supplement, distributed clean energy resource when necessary
Energy-storage battery (20) charging is given, the case where according to AC load and DC load, using power supply reliability as principle, flexible configuration work
Operation mode.
5, using the main architecture design of alternating current-direct current bus parallel connection, 2 road supply paths are increased than original system, and can basis
The selection of load priority is different to pass through for circuit, it is ensured that the load of high priority obtains more standby electric energy, optimizes communication base station
Power supply structure, improve the power supply reliability of communication base station.
Detailed description of the invention
Fig. 1 shows for a kind of alternating current-direct current mixing parallel connection type micro-grid system function applied to base station field described in this patent
It is intended to；Wherein,
Power distribution network (1) distribution transformer (2) switch 1 (3)
User's AC ammeter (4) base station switch power supply/rectification module (5) communication backup battery (6)
Multi-channel DC loads (7-1) other AC loads (7-2)
Alternating current-direct current mixing parallel connection type energy router (8) direct current transducer (15)
Reverse current protection D.C mutual-inductor (18) distributed generation resource (19)
Energy-storage battery (20)
Bus 1 (AC220/380V) bus 2 (AC220/380V)
Bus 3 (the specified DC48V of Ve/) bus 4 (Vs/DC)；
Switch 1 (3) is alternating-current switch；
m≥2,n≥2,N≥2；
Fig. 2 is the functional schematic of alternating current-direct current mixing parallel connection type energy router (8)；Wherein,
Switch 2 (9) Unidirectional direct-current ammeter (10) diode (11)
Energy router control module (12) multi-functional DC/DC (13) two-way AC/DC (14)
The more MPPT-DC/DC modules (17) of two-way exchange ammeter (16)
Switch 2 (9) is dc switch；
Fig. 3 is that this patent improves curve signal comparison using the electricity consumption of peak load shifting technology to electricity consumption；
Specific embodiment
In conjunction with attached drawing 1, Fig. 2, Fig. 3, it is as follows to implement situation:
Its median generatrix 1 (AC220/380V) is conventional to be connected to power distribution network (1)-alternating current, can also external oil-burning machine conduct emergency
Power supply.Bus 3 (the specified DC48V of Ve/) is the DC bus for communicating backup battery (6).
The power supply system of existing base station is powered using regular distribution net (1), when grid power blackout, base station communication backup battery
(6) starting direct current 48V bus 3 is powered.And presently, there are the problem of be that the 48V in communication base station as communication emergency power supply leads to
Believe backup battery (6), since the work many years emergency service time shortens, faces aging and moves back the problem of taking.Base station communication standby electricity
Pond (6) can enable oil-burning machine when necessary, but need artificial carrying to base station scene and manually start, and there is operation not side in this way
Just, the problem of emergency service reacts not in time.
The light that this patent uses stores up alternating current-direct current mixing parallel connection type micro-grid system:
Alternating current-direct current mixing parallel connection type base station micro-capacitance sensor is increased on the basis of power supply system at former base station, increases distribution
Power generation and energy-storage function.Key point is described as follows:
1. passing through the voltage, electric current of reverse current protection D.C mutual-inductor (18) Sample AC side, by alternating current-direct current mixing parallel connection type
Energy router (8) is calculated to be implemented to control to energy-storage battery (20) discharge power, and guarantee, which is discharged, all to be disappeared by local load
It receives, realizes and run without adverse current.
2. 4 voltage of direct current mixing parallel connection type energy router (8) control bus is higher than bus 3, two stage load peak-valley difference benefits
It is higher than bus 2, port (P5-1......N) voltage of more MPPT-DC/DC (1......N) outputs with output (exchange) voltage
Higher than the voltage of two-way AC/DC (17) output port (P5-G).
3. alternating current-direct current mixing parallel connection type energy router (8) is according to two-way exchange power and network interface (P1), Unidirectional direct-current
Power output interface (P2), sensor signal interface (P3), distributed electrical source interface (P4), energy-storage battery interface (P5) judge
The case where realtime power of photovoltaic distributed power input, the real time electrical quantity of energy-storage battery (20), load of base station alternating current-direct current, is used
Electric peak valley situation carries out the switchings of different working modes.The operating mode includes that distributed generation resource is powered, energy-storage battery is put
Electricity, energy-storage battery charging, power distribution network power supply.It is finally realized by alternating current-direct current mixing parallel connection type energy router (8) and preferentially uses light
Volt power generation, followed by power distribution network generate electricity, energy-storage battery electric discharge when necessary supplements, the control of photovoltaic power generation surplus energy-storage battery charging
Strategy, and for energy-storage battery (20), preferentially use is photovoltaic charged, secondly selects to charge when electricity consumption paddy period (minimum electricity price),
Discharge in electricity consumption peak period (highest electricity price), when electric discharge with power distribution network (1) parallel running.
4. the power supply of load preferentially uses first order load energy-storage standby to export (direct current), secondly defeated using two stage load standby
It (exchanges) out, i.e., after alternating current-direct current mixing parallel connection type energy router (8) assessment available electrical energy and alternating current-direct current loading condition, in electricity
When sufficient, first order load energy-storage standby output (direct current), two stage load standby output (exchange) can be supplied；When the power is insufficient,
Preferential first order load energy-storage standby output (direct current).To ensure that alternating current-direct current mixing parallel connection type energy router (8) believes alternating current-direct current
Number accurately control, direct current transducer (15) acquires the acquisition of the DC voltage of bus 3, DC load current, mutual inductor
(18) 1% is not less than to the voltage sample precision suggestion of AC voltage sampling, AC current collecting, current sample precision is suggested not
Lower than 1%.
5. external condition is adapted to fit photovoltaic module, mountable photovoltaic module, or replaced with a wind-power electricity generation group of planes, through handing over
Direct current mixing parallel connection type energy router (8) gives first order load energy-storage standby output (direct current) power supply, while giving energy-storage battery
(20) it charges.When external condition is not suitable for installation photovoltaic component, uneasiness is may be selected in MPPT-DC/DC module (17) module section
Dress.Energy-storage battery (20) electric energy is only provided by power distribution network (1) i.e. alternating current.
6. when power distribution network (1) has electricity, so that it may realize preferentially to generate electricity using photovoltaic power generation, followed by power distribution network and be born to level-one
Lotus power supply, when photovoltaic power generation surplus is charged to energy-storage battery or supplies electricity to second level load to bus 2 (AC220/380V) conveying exchange
Power supply, followed by power distribution network generate electricity powers to two stage loads.Also, alternating current-direct current mixing parallel connection type energy router (8) is according to negative
The case where load, can start photovoltaic or energy storage and a possibility that power distribution network works at the same time, and real work mode is very flexible.Work as distribution
When net (1) powers off, energy-storage battery (20) power supply is enabled immediately, and preferential first order load energy-storage standby exports (direct current).
7. can clearly find out from Fig. 3, using peak load shifting technology, electricity consumption curve is in steady state, hence it is evident that reduces
Impact to power grid can suitably reduce time-of-use tariffs overall expenses.
By upper, for a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to base station field, ability described in this patent
The oher improvements and changes that field technique personnel directly export or associate under the premise of not departing from the spirit and design of this patent,
It is considered as within the protection scope of this patent.
Claims (9)
1. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field, mainly by distributed generation resource (19), storage
It can battery (20), alternating current-direct current mixing parallel connection type energy router (8), direct current transducer (15), reverse current protection ac sensor
(18) and be connected in parallel channel (P1, P2, P3, P4, P5 leading-out end line) composition；And using two-way in parallel, the direct current mother of ac bus
The unidirectional main connection framework in parallel of line, needs according to load importance rate, distributed generation resource (19), energy-storage battery (20), load
It the composite factors such as seeks, control strategy is executed by alternating current-direct current mixing parallel connection type energy router (8), realize towards classification load
With the multipath alternating current-direct current hybrid power supply of different periods, the power supply structure and energy-storage standby supportability of communication base station are optimized,
It improves the clean energy resource access ratio of communication base station and largely improves power supply reliability.
2. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field according to claim 1, special
Sign is, uses and is connected in parallel and power direction is two-way with user side ac bus 2, can both pass through from user side ac bus 2
Alternating current-direct current mixing parallel connection type energy router (8) charges to energy-storage battery (20), and can be from energy-storage battery (20) through alternating current-direct current
Parallel connection type energy router (8) are mixed to feed to user side ac bus 2, it can also be mixed through alternating current-direct current from distributed generation resource (19)
Parallel connection type energy router (8) are closed to feed to user side ac bus 2.
3. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field according to claim 1, special
Sign is, used with user side DC bus 3 be connected in parallel and power direction be it is unidirectional, can both be passed through from distributed generation resource (19)
Alternating current-direct current mixing parallel connection type energy router (8) is fed to user side DC bus 3, and can be from energy-storage battery (20) through alternating current-direct current
Parallel connection type energy router (8) are mixed to feed to user side DC bus 3.
4. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field according to claim 1, special
Sign is, alternating current-direct current mixing parallel connection type energy router (8) includes the unidirectional input power interface of at least 2 road distributed energies, extremely
Few 1 road alternating-current bidirectional power interface, at least 1 road Unidirectional direct-current output power interface, the connection of at least 1 road energy-storage battery (20) direct current
Channel；Alternating current-direct current mixing parallel connection type energy router (8) is by the two-way AC/DC module (14) at least 1 tunnel, the more MPPT- at least 2 tunnels
DC/DC submodule (17) and the multi-functional DC/DC module (13) of 1 high-frequency isolation type, and via energy router control module
(12) (including controller/control strategy) carries out Collaborative Control composition.
5. alternating current-direct current mixing parallel connection type energy router (8) according to claim 4, which is characterized in that multi-functional DC/DC
There is module (13) output end of at least two input terminal and more MPPT-DC/DC modules (17) to be separately connected, at least 1 input
End connect with energy-storage battery (20), the output end of multi-functional DC/DC module (13) is through diode (11) and switch 2(9) series connection
Channel forms DC bus 4, is connected in parallel with user side DC bus 3；The input terminal of more MPPT-DC/DC modules (17)
It is separately connected with distributed generation resource (19) multiple output ends, the multiple output ends and energy-storage battery of more MPPT-DC/DC modules (17)
(20) it connects, and is only connected as unidirectional charge tunnel.
6. more MPPT-DC/DC modules (17) according to claim 5, which is characterized in that it includes most two groups of strings that it is internal
DC/DC non-isolation type BOOST or the BOOST-BUCK converter of connection, input are the unidirectional input power interface of distributed energy.
7. the switch 2(9 required according to right 5), which is characterized in that the protection of the DC circuit as output, while using straight
Air switch, DC relay, any 2 kinds or 3 kinds of tandem compound in electronic power switch are flowed, and by energy router control
Molding block (12) control.
8. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field according to claim 1, special
Sign is that the voltage range of energy-storage battery (20) is 12 ~ 1000VDC of direct current；Distributed generation resource (19) is optional photovoltaic group string
Or small-sized wind power generator group, there is dc power fan-out capability, and every group of string solar panel includes at least 1 photovoltaic module,
Through unidirectional input power interface access alternating current-direct current mixing parallel connection type energy router (8) of distributed energy.
9. a kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field according to claim 1, special
Sign is that sensor includes direct current transducer (15) and ac sensor (18)；Wherein, direct current transducer (15) tie point is located at
The DC bus 3 of base station switch power supply DC output side carries out busbar voltage and load current signal acquisition；Wherein exchange sensing
Device (18) is reverse current protection D.C mutual-inductor, and tie point is located between user's AC ammeter (4) outgoing line side and ac bus 2, into
Row alternating voltage and AC current collecting；And voltage and current sample precision is not less than 1%.
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Application publication date: 20181225 |