CN107508321A - A kind of communication base station micro-capacitance sensor structure and control method based on ac bus technology - Google Patents
A kind of communication base station micro-capacitance sensor structure and control method based on ac bus technology Download PDFInfo
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- CN107508321A CN107508321A CN201710815655.8A CN201710815655A CN107508321A CN 107508321 A CN107508321 A CN 107508321A CN 201710815655 A CN201710815655 A CN 201710815655A CN 107508321 A CN107508321 A CN 107508321A
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- 238000004891 communication Methods 0.000 title claims abstract description 42
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 32
- 240000002853 Nelumbo nucifera Species 0.000 claims abstract description 14
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims abstract description 14
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims description 4
- 230000009711 regulatory function Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- H02J3/383—
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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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
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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
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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
-
- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of communication base station micro-capacitance sensor structure of ac bus technology and control method, including multiple generator units, load, control system and distribution line；The generator unit includes public power distribution network, energy-storage battery and its DC/AC conversion modules, photovoltaic generating system and its DC/AC conversion modules and off-network AC/DC conversion modules, wind generator system and its AC/AC conversion modules；The load includes uninterrupted communication load, industrial frequency AC typically loads, controllable load, tunable load and energy-storage battery charging AC/DC conversion modules；Distribution line includes DC power distribution line and AC power distribution line；It is of the invention to ensure that communication base station micro-capacitance sensor self-energy balance takes over seamlessly with simultaneously off-network by source lotus balance control module and power control module, load matched module for compensating three phase network degree of unbalancedness.
Description
Technical field
The present invention is to belong to power system micro-capacitance sensor field, is mainly concerned with a kind of communication base based on ac bus technology
Stand micro-capacitance sensor structure and control method.
Background technology
With the explosive growth of internet mobile data amount, the number as the communication base station in mobile Internet data source
Amount and scale also rapid expansion in the world.According to statistics, Communication in China industry power consumption in 2009 reaches 29,000,000,000 degree, its
Middle communication base station power consumption has accounted for 45%, increasingly serious for communication base station equivalent to the generated energy of Three Gorges Dam whole year 17%
Energy consumption problem, powered using regenerative resource and green energy resource for communication base station, while communication base station energy requirements are met
Carbon emission amount is reduced, is increasingly becoming one of important channel for building green data center, attracts the sight of industry concern
With reference to the advantages of micro-capacitance sensor, using bulk power grid as backup support, distributed power source and distributed energy storage are combined, it is clear that are
A kind of effective way for improving power supply reliability, can meet the needs of power supply reliability well while energy-conserving and environment-protective,
Ensure that important load runs without interruption, thus design a kind of structure and control method for communication base station micro-capacitance sensor seem it is urgent not
And treat.
The content of the invention
Goal of the invention：The technical problems to be solved by the invention are to provide a kind of communication base station based on ac bus technology
Micro-capacitance sensor structure.
The present invention also technical problems to be solved are to provide the above-mentioned communication base station micro-capacitance sensor based on ac bus technology
Control method.
In order to solve the above technical problems, the technology used in the present invention means are:
The communication base station micro-capacitance sensor structure and control method of a kind of ac bus technology, including multiple generator units, energy-storage system,
Load and the distribution line based on base station micro-capacitance alternating current bus, in addition to control system；The generator unit includes public
Power network, energy-storage battery and its DC/AC conversion modules, photovoltaic generating system and its DC/AC conversion modules and off-network AC/DC become mold changing
Block, wind generator system and its AC/AC conversion modules；The load includes uninterrupted communication load, industrial frequency AC typically loads,
Controllable load, tunable load and energy-storage battery charging AC/DC conversion modules；Distribution line includes DC power distribution line and matched somebody with somebody with exchanging
Electric line；Control system includes source lotus balance control module, power control module and telematique module.Its control method
For：Source lotus balances control module by detecting power network point of incoming cables voltage, current phasor, calculates four-quadrant performance number, passes through tune
The input-output power of distributed power source, energy-storage system and controllable load is saved, reaches microgrid self-energy hair storage balance；Losing
In the case that power distribution network is powered, distributed power source and energy-storage system mode of operation are adjusted by power control module, make micro-capacitance sensor
Off-network mode operation, effective guarantee micro-grid load power supply reliability and energy utilization rate are transitioned into controllable time；Load
Matching module calculates power network three-phase load size in real time, automatic to distribute micro-capacitance sensor distributed power source and load access phase line, compensation
Power network tri-phase unbalance factor.
Wherein, described photovoltaic generating system and its grid-connected leading-out terminal of DC/AC conversion modules by gate-controlled switch K2 and are born
Carry matching module and be connected to microgrid ac bus, off-network leading-out terminal is defeated by gate-controlled switch K1 connection off-network AC/DC conversion modules
Enter end, off-network AC/DC conversion module output ends are connected to -48V dc bus.
Described wind generator system and its output of AC/AC conversion modules are connected by gate-controlled switch K3 and load matched module
It is connected to microgrid ac bus.
Described energy-storage battery and its grid-connected leading-out terminal of inversion DC/AC converters passes through gate-controlled switch K5 and load matched mould
Block is connected to microgrid ac bus, and off-network leading-out terminal is loaded by gate-controlled switch K4 connections off-network；Described energy-storage battery and its
Charging AC/DC converters are connected to microgrid ac bus by gate-controlled switch K6 and load matching device.
Described controllable load and tunable load are connected to microgrid ac bus by gate-controlled switch K7, K8 respectively.
Described photovoltaic DC/AC converters are from grid-connected integral DC/AC conversion modules, have active power and reactive power
Regulatory function, is single-phase or multiphase DC/AC converters, described multiphase DC/AC converters, wherein a phase DC/AC modules can be
Non-isolated single-phase and off-network mode, remaining each phase DC/AC module are the single-phase grid-connected mode of isolated form.
Described off-network AC/DC modules are to meet the AC/DC modules of communication base station and electric power standard requirement, off-network AC/DC moulds
Block in parallel can extend its power output, and gross output is less than the output work of photovoltaic generating system and its DC/AC conversion modules
Rate.
Described energy storage DC/AC converters are from grid-connected integral DC/AC conversion modules, have active power and reactive power
Regulatory function, it is single-phase or multiphase DC/AC converters.
Described energy-storage battery can be the electricity such as lead-acid battery, lead carbon battery, lithium battery, fuel cell or ultracapacitor
Energy-storage units, output voltage 48Vdc~1000Vdc。
Described source lotus balance control module by detecting power network point of incoming cables voltage and current vector, calculate four-quadrant
Performance number, when detecting that microgrid energy flows to public power distribution network, power control module is adjusted by being opened and closed K6, K7, K8 dynamic
Save in microgrid and load, and regulation distributed power source and energy-storage battery and DC/AC converter power outputs reach microgrid hair storage in real time
With balance.
Described power control module balances control module by source lotus and detects power network point of incoming cables voltage acquisition current electric grid
State, when detecting grid cut-off, K2, K3 are disconnected in 20ms ~ 999s, closes K1, K4, micro-capacitance sensor is automatically into off-network mould
Formula；When detecting that power network has electricity, power control module disconnects K1, K4 in 20ms ~ 999s, and closure K2, K3 micro-capacitance sensor is automatic
Microgrid enters grid-connect mode.
Beneficial effect：
A kind of communication base station micro-capacitance sensor structure of ac bus technology, energy interconnection and interaction are realized with ac bus, and to hand over
Stream synchronizing mode is connected with public electric wire net, or to exchange parallel way and other self distributed power sources or distributed micro-capacitance sensor
Connection, original power network configuration structure of electricity consumption side need not be changed when in use, there is height system compatibility and security；It is a kind of
The communication base station grid control method of ac bus technology, realize that microgrid self-energy sends out Chu Yongping by micro grid control system
Weighing apparatus, and can be friendly interactive with public electric wire net, the fluctuation of regenerative resource is stabilized, power network peak-valley difference is cut down, in power network end
The reliability of power supply is improved, improves the quality of power supply, compensates three phase network degree of unbalancedness.
Brief description of the drawings
Fig. 1 is a kind of communication base station micro-capacitance sensor structure chart of ac bus technology of the present invention.
Fig. 2 is that a kind of communication base station micro-capacitance sensor of ac bus technology of the present invention implements illustration.
Embodiment
In order to more specifically describe the present invention, below in conjunction with the accompanying drawing 1 in the embodiment of the present application, the application is implemented
Technical scheme in example is clearly and completely described, it is clear that described embodiment is only that the application part is implemented
Example, rather than whole embodiments.Based on embodiments herein, those of ordinary skill in the art are not making creative labor
The every other embodiment obtained under the premise of dynamic, belong to the scope of the application protection.
A kind of implementation of the base station micro-capacitance sensor structure based on ac bus technology provided as shown in Figure 1 for application embodiment
Illustration, the photovoltaic inversion DC/AC conversion modules and 1.5KW communication power supply that its generator unit includes bulk power grid, capacity is 4KW
AC/DC conversion modules, capacity 10KWH, output voltage 336V energy-storage battery and capacity are 5KW DC/AC conversion modules；Also wrap
Include load and for the alternating current-direct current distribution line connected with generator unit will to be loaded；Load is born including -48Vdc uninterrupted communications
Lotus, industrial frequency AC typically load, the single-phase charging modules of 3KW, emergent electric light, emergency sooket etc..
Photovoltaic 4KW is single-phase and the grid-connected end of the integral inversion module of off-network is handed over by gate-controlled switch K1 and load matched device with microgrid
Bus connection is flowed, off-network end is connected to 1.5KW communication power supplies, and 1.5KW communication power supplies are connected to -48V dc bus.
Capacity 10KWH, output voltage 336V energy-storage batteries and 5KW is single-phase and the grid-connected end of the integral inversion module of off-network is by can
Control switch K4 and load matched module are connected to microgrid ac bus, and the emergent electric light of off-network port connection and emergency sooket, 3KW fill
Electric module input is connected to microgrid ac bus, output connection energy-storage battery by load matched module.
Communication base station illuminates and base station air conditioner is connected to microgrid ac bus by gate-controlled switch K6, K7 respectively.
Microgrid ac bus is connected to communication base station load maximum phase line X. by breaker
Source lotus balances control module by VT, and CT modules detect phase line X points of incoming cables voltage and current vector in real time, are calculated by software
Method calculates X phases point of incoming cables power Px, when detecting that microgrid energy flows to public power distribution network, i.e. PxDuring less than 0, Power Control
Module is opened to be loaded in K5, K6, K7 increase microgrid, when load is adjusted to maximum in microgrid, PxStill less than 0, then source lotus balance control
Molding block by communication mode reduces photovoltaic 4KW single-phase and the integral inversion module of off-network and energy storage 5KW is single-phase and off-network is integrally inverse
Become module power output, make PxClose to 0, realize that microgrid self-energy balances；When detecting that public power distribution network energy flowed in microgrid
When energy is more than setting value, i.e. PxDuring more than default value, then source lotus balance control module improves photovoltaic by communication mode
4KW is single-phase and the integral inversion module of off-network and energy storage 5KW is single-phase and the integral inversion module power output of off-network, power control module
Closing K5, K6, K7 reduces load in microgrid, makes PxClose to 0, realize that microgrid self-energy balances.
During the balance control module detection power distribution network power-off of source lotus, power control module disconnected within the default time K2,
K4, K1, K3 are closed, micro-capacitance sensor is automatically into off-network pattern, and 1.5KW communication power supplies are single-phase by 4KW and the integral inversion mould of off-network
Communication base station -48V dc bus is linked under block off-network pattern, improves micro-capacitance sensor uninterrupted power source reliability and using energy source
Rate；Energy-storage battery and its DC/AC conversion modules switch to off-network pattern, there is provided emergency lighting and emergency sooket.
Load matching device detects three phase network load in real time, when detecting A phase load maximums, makes photovoltaic 4KW mono- automatically
Mutually and off-network one inversion module and energy storage 5KW is single-phase and the integral inversion module of off-network is linked into A phases, while 3kW is made to charge mould
Block and it is linked into A phases, compensates communication base station threephase load degree of unbalancedness.
Claims (8)
1. the communication base station micro-capacitance sensor structure and control method of a kind of ac bus technology, including multiple generator units, energy storage system
System, load and the distribution line based on base station micro-capacitance alternating current bus, in addition to control system；The generator unit includes public affairs
Common-battery net, energy-storage battery and its DC/AC conversion modules, photovoltaic generating system and its DC/AC conversion modules and off-network AC/DC conversion
Module, wind generator system and its AC/AC conversion modules；The load includes uninterrupted communication load, industrial frequency AC is typically born
Load, controllable load, tunable load and energy-storage battery charging AC/DC conversion modules；Distribution line includes DC power distribution line and friendship
Flow distribution line；Control system includes source lotus balance control module, power control module and telematique module；
Its control method is：Source lotus balances control module by detecting power network point of incoming cables voltage, current phasor, calculates four-quadrant
Performance number, by adjusting distributed power source, energy-storage system and the input-output power of controllable load, reach the hair storage of microgrid self-energy
With balance；In the case where losing power distribution network power supply, distributed power source is adjusted by power control module and energy-storage system works
Pattern, micro-capacitance sensor is set to be transitioned into off-network mode operation in controllable time；Load matched module calculates power network three-phase load in real time
Size, it is automatic to distribute micro-capacitance sensor distributed power source and load access phase line, compensate power network tri-phase unbalance factor；
Wherein, described photovoltaic generating system and its DC/AC conversion modules, grid-connected leading-out terminal pass through gate-controlled switch K2 and load
Be connected to microgrid ac bus with module, off-network leading-out terminal by gate-controlled switch K1 connection off-network AC/DC conversion module inputs,
Off-network AC/DC conversion module output ends are connected to -48V dc bus；
Described wind generator system and its output of AC/AC conversion modules are connected to by gate-controlled switch K3 and load matched module
Microgrid ac bus；
Described energy-storage battery and its grid-connected leading-out terminal of inversion DC/AC converters is connected by gate-controlled switch K5 and load matched module
Microgrid ac bus is connected to, off-network leading-out terminal is loaded by gate-controlled switch K4 connections off-network；Described energy-storage battery and its charging
AC/DC converters are connected to microgrid ac bus by gate-controlled switch K6 and load matching device；
Described controllable load and tunable load are connected to microgrid ac bus by gate-controlled switch K7, K8 respectively.
2. the communication base station micro-capacitance sensor structure of ac bus technology as claimed in claim 1, it is characterised in that described photovoltaic
DC/AC converters are from grid-connected integral DC/AC conversion modules, have active power and reactive power regulatory function, be it is single-phase or
Multiphase DC/AC converters.
3. multiphase DC/AC converters as claimed in claim 2, it is characterised in that wherein a phase DC/AC modules can be non-isolated
Single-phase and off-network mode, remaining each phase DC/AC module are the single-phase grid-connected mode of isolated form.
4. the communication base station micro-capacitance sensor structure of ac bus technology as claimed in claim 1, it is characterised in that described off-network
AC/DC modules are to meet communication base station and electric power standard required standard AC/DC modules, and off-network AC/DC modules in parallel can expand
Its power output is opened up, gross output is less than the power output of photovoltaic generating system and its DC/AC conversion modules after extension.
5. the communication base station micro-capacitance sensor structure of ac bus technology as claimed in claim 1, it is characterised in that described energy storage
DC/AC converters are from grid-connected integral DC/AC conversion modules, have active power and reactive power regulatory function, be it is single-phase or
Multiphase DC/AC converters.
6. the communication base station micro-capacitance sensor structure of ac bus technology as claimed in claim 1, it is characterised in that described energy storage
Battery can be the electrical energy storage units such as lead-acid battery, lead carbon battery, lithium battery, fuel cell or ultracapacitor, DC voltage
Scope is 48Vdc~1000Vdc。
7. the communication base station grid control method of ac bus technology as claimed in claim 1, it is characterised in that described
Source lotus balance control module calculates four-quadrant performance number by detecting public power distribution network point of incoming cables voltage and current vector, when
When detecting that microgrid energy flows to public power distribution network, power control module is born by being opened and closed in K6, K7, K8 dynamic regulation microgrid
Carry, and regulation distributed power source and energy-storage battery and DC/AC converter power outputs reach microgrid hair storage balance in real time.
8. the communication base station grid control method of ac bus technology as claimed in claim 1, it is characterised in that power control
Molding block, which by source lotus balances control module and detects power network point of incoming cables voltage, obtains current electric grid state, when detecting grid cut-off
When, K2, K3 are disconnected in 20ms ~ 9999s, closes K1, K4, micro-capacitance sensor is automatically into off-network pattern；When detecting that power network has electricity
When, power control module disconnects K1, K4 in 20ms ~ 9999s, and the closure automatic microgrid of K2, K3 micro-capacitance sensor enters grid-connect mode.
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Cited By (8)
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| CN108808711A (en) * | 2018-07-09 | 2018-11-13 | 沈阳农业大学 | Photovoltaic automatic phase selecting is grid-connected to be used for low voltage electric network threephase load imbalance governing system |
| CN109088435A (en) * | 2018-09-21 | 2018-12-25 | 无锡美凯能源科技有限公司 | A kind of alternating current-direct current mixing parallel connection type micro-capacitance sensor applied to communication base station field |
| CN109473988A (en) * | 2018-12-05 | 2019-03-15 | 许继集团有限公司 | Intelligent distribution network power flowcontrol, fault handling method and device containing micro-capacitance sensor |
| CN109756025A (en) * | 2019-02-21 | 2019-05-14 | 深圳索瑞德电子有限公司 | One kind being applied to communication base station photovoltaic power supply system |
| CN110783947A (en) * | 2019-10-09 | 2020-02-11 | 天津大学 | Many microgrids exchange interconnected system who contains switch array |
| CN111404186A (en) * | 2020-05-11 | 2020-07-10 | 国网湖南省电力有限公司 | Distribution transformer dynamic capacity-increasing intelligent energy storage device and control method |
| CN112332449A (en) * | 2020-10-13 | 2021-02-05 | 芜湖泰伦特能源科技有限公司 | Microgrid grid-connected adjusting method |
| TWI795910B (en) * | 2021-09-16 | 2023-03-11 | 鐙鋒綠能科技股份有限公司 | Regional off-grid hybrid electric DC charging system |
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