CN110380401A - Town road direct current concentration-distributed distribution system - Google Patents
Town road direct current concentration-distributed distribution system Download PDFInfo
- Publication number
- CN110380401A CN110380401A CN201910793610.4A CN201910793610A CN110380401A CN 110380401 A CN110380401 A CN 110380401A CN 201910793610 A CN201910793610 A CN 201910793610A CN 110380401 A CN110380401 A CN 110380401A
- Authority
- CN
- China
- Prior art keywords
- direct current
- bus
- intelligent protection
- protection switch
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000004224 protection Effects 0.000 claims abstract description 34
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000006837 decompression Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Classifications
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
-
- 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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/08—Three-wire systems; Systems having more than three wires
- H02J1/082—Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
Abstract
The invention discloses a kind of town road direct current concentration-distributed distribution system, including exchange isolating transformer, exchange isolating transformer secondary coil output end is connect through the first Intelligent protection switch with exchange 0.4kV bus；Exchange 0.4kV bus leading-out terminal is connect through the second intelligent protection, three-phase four-quadrant PWM controlled rectifier, third Intelligent protection switch with common DC bus；Common DC bus output end is connected with short distance current supply circuit and remote power-feeding circuit；Short distance current supply circuit is made of isolated form DC-DC converter and more set LED street lamp terminals for being arranged in parallel, and remote power-feeding circuit is made of direct current voltage reulation power distribution cabinet and the more set LED street lamp terminals being arranged in parallel in direct current voltage reulation power distribution cabinet leading-out terminal.The invention has the advantages that greatly reducing traditional town road light distribution site arrangement, one distribution site of the present invention (power supply section unit) can cover 9 conventional electrical distribution sites, remarkable in economical benefits.
Description
Technical field
The present invention relates to town road systems, more particularly, to town road direct current concentration-distributed distribution system.
Background technique
Currently, town road DC distribution system is mainly two classes: one kind is Alternating Current Power Supply, each terminal load configuration AC-
DC power module, the electric source modes are powered by low-voltage alternating current power supply, are laid via main cable to lamp stand, then by LED light
Included AC-DC power module supplies electricity to LED street lamp by decompression, filtering, rectification, pressure regulation.Another kind of is by low-voltage alternating-current distribution
Case power supply, adds a set of direct current power box, original ac mains is changed to dc main, each load terminal configures DC-DC
Voltage regulating module；The mode is by low-tension supply through filtering, three-phase bridge silicon controlled rectifier (the general adjustable DC180V- of output voltage
DC300V), at via direct current supply cable laying to lamp stand, then the DC-DC voltage regulating module by carrying in LED light supplies electricity to LED
Street lamp.
It is in fact still Alternating Current Power Supply mode, and terminal loads each LED lamp and requires to be equipped with for former mode
One AC-DC power module removes driving LED light source；Its function is EMC, rectification and filtering, power drive, inversion decompression, pressure stabilizing
Current stabilization and power factor correction etc. so that the control circuit of LED lamp is complicated, and component is more, at high cost；And AC-DC power supply mould
The service life of block is significantly limited by the electrolytic capacitor service life in power module.
For latter mode, although using direct current supply mode, power supply structure mode is extremely unreasonable: this
Mainly: 1, simply adding DC power supply panel in each low-voltage alternating-current distribution box, do not give full play to the excellent of DC system
More property had both increased alternating current source point, also increased direct current source point, caused the serious wasting of resources；2, due to AC-DC power supply
Shield dispersed placement, is unfavorable for comprehensive harmonic wave control, great amount of cost is increased to the expansion of the following micro-capacitance sensor technology；3, due to AC-
DC equipment increases, and causes apparatus failure point to increase, power supply reliability is poor；4, the rectifier power source case can not inversion, cannot will
Energy back is restricted to AC network for developing in ubiquitous power power grid.
Summary of the invention
It is an object of that present invention to provide a kind of town road direct current concentration-distributed distribution systems.
To achieve the above object, the present invention takes following technical proposals:
Town road of the present invention direct current concentration-distributed distribution system, including multiple power supply sections unit；It is multiple described
The distribution system structure of power supply section unit is identical, the exchange isolating transformer including 10kV/0.4kV, and the exchange isolation becomes
Depressor secondary coil output end is connect through the first Intelligent protection switch with exchange 0.4kV bus；The exchange 0.4kV bus first
Leading-out terminal is connect through the second Intelligent protection switch with three-phase four-quadrant PWM controlled rectifier input terminal, the three-phase four-quadrant PWM
Controlled rectifier output end is connect through third Intelligent protection switch with common DC bus；The common DC bus output end is connected with
Short distance current supply circuit and remote power-feeding circuit；The short distance current supply circuit is set by isolated form DC-DC converter and parallel connection
The more set LED street lamp terminals composition set, the 4th Intelligent protection switch of isolated form DC-DC converter end of incoming cables direct current together
Bus connection, isolated form DC-DC converter leading-out terminal is by two core copper cables and covers the LED street lamp terminal more；It is described remote
By direct current voltage reulation power distribution cabinet and more set LED street lamps in the direct current voltage reulation power distribution cabinet leading-out terminal are arranged in parallel apart from current supply circuit
Terminal composition, direct current voltage reulation power distribution cabinet end of incoming cables are connected by two core copper cables and the 5th Intelligent protection switch leading-out terminal
It connects, the 5th Intelligent protection switch end of incoming cables is connect with common DC bus.
The second leading-out terminal of the exchange 0.4kV bus is connect through the 6th Intelligent protection switch with exchange 0.4kV backup power source.
The remote power-feeding circuit is multiple.
The three-phase four-quadrant PWM controlled rectifier output voltage be DC540 volt, the isolated form DC-DC converter and
Direct current voltage reulation power distribution cabinet output voltage is DC220V or DC110V.
The common DC bus output end is connected with micro-capacitance sensor interface through the 7th Intelligent protection switch, through the 8th intelligent protection
Switch is connected with expansion interface, is connected with accumulator plant on common DC bus.
Advantage major embodiment of the present invention is in the following areas:
1, traditional town road light distribution site arrangement is greatly reduced, (power supply section is single for one distribution site of the present invention
Member) 9 conventional electrical distribution sites, remarkable in economical benefits can be covered；
2, direct current cables uses two core copper cables, and the variation of service cable sectional area is less, by four current cores or five core copper
Cable processed is changed to two core copper cables, greatly reduces copper loss amount；
3, for DC power-supply system convenient for being included in wisdom micro-grid system, the later period, which can be convenient, utilizes wind energy, solar energy, biological energy source etc.
The newborn energy is blended with the development framework of " three types, two net " of network system；
4, " distributed intelligence self-healing " function (being realized by the intelligent monitor system that each distribution center installs) can be achieved；Real time execution
Monitoring and distribution Cooperative Analysis control, realize operating status adjust, risk identification and prevention, fault diagnosis and defencive function etc.,
To improve energy interconnection Running State control and Prevention-Security control ability；
5, it in the large-scale public places such as park or square, expansible intelligent electric motor car charging pile function, and can be supplied with Automatic Optimal
The distribution of electric load region, greatly improves energy utilization rate；
6, the town roads commonly used equipment such as LED light, camera, billboard, traffic lights, display screen is DC load, is adopted
It is powered with DC power supply, reduces distribution conversion links, improved the utilization efficiency of electric energy, saved the energy；
7, direct current is safer, greatly reduces the generation of street lamp post shock hazard；
8, can the input of two-way AC power source, automatically switch, and configurable accumulator plant (fixed or mobile), in urgent feelings
To the specific power supply in specific region under condition, the power reguirements of important area are ensured.
Detailed description of the invention
Fig. 1 is the electrical block diagram of power supply section unit of the present invention.
Fig. 2 is the distribution range plane schematic diagram of power supply section unit of the present invention, and in figure, English alphabet a ~ w is indicated
Road marks point.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention, the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
State embodiment.
Town road of the present invention direct current concentration-distributed distribution system, including multiple power supply sections unit.
As shown in Figure 1, the distribution system structure of each power supply section unit is identical, including rectifies centralized power distribution cabinet 1 and connect
Connect rectification 1 leading-out terminal of centralized power distribution cabinet a short distance current supply circuit JWL1 and eight remote power-feeding circuit YWL1 ~
YWL8。
Centralized power distribution cabinet 1 is rectified by 10kV/0.4kV exchange isolating transformer TM1, exchange 0.4kV bus 2 and direct current
DC540 lies prostrate common DC bus 3 and constitutes.Exchange isolating transformer TM1 secondary coil output end through the first Intelligent protection switch F1 with
It exchanges 0.4kV bus 2 to connect, exchanges 2 first leading-out terminal of 0.4kV bus through the second Intelligent protection switch F2 and three-phase four-quadrant
4 input terminal of PWM controlled rectifier connection, exchange 2 second leading-out terminal of 0.4kV bus through the 6th Intelligent protection switch F6 with exchange
The connection of 0.4kV backup power source.4 output end of three-phase four-quadrant PWM controlled rectifier is through third Intelligent protection switch F3 direct current together
Bus 3 connects.
Short distance current supply circuit JWL1 is by isolated form DC-DC converter 5 and be arranged in parallel more 6 groups of set LED street lamp terminal
At isolated form DC-DC converter 5 exports direct current DC220 volt, the 4th Intelligent protection switch F4 of end of incoming cables and common DC bus 3
Connection, 5 leading-out terminal of isolated form DC-DC converter are connect by two core copper cables with more set LED street lamp terminals 6.
Each remote power-feeding circuit YWL1 ~ YWL8 is matched by direct current voltage reulation power distribution cabinet 7 and being arranged in parallel in direct current voltage reulation
More set LED street lamp terminals 8 of 7 leading-out terminal of electric cabinet form, and direct current voltage reulation power distribution cabinet 7 exports direct current DC220 volt, direct current voltage reulation distribution
7 end of incoming cables of cabinet is connect by two core copper cables with the 5th Intelligent protection switch F5 leading-out terminal, the 5th Intelligent protection switch F5 into
Line end is connect with common DC bus 3.
3 output end of common DC bus is connected with micro-capacitance sensor interface 9 through the 7th Intelligent protection switch F7, through the 8th intelligent protection
Switch F8 and isolated form DC-DC pressure regulation unit 12 are connected with expansion interface 10, are connected with accumulator plant on common DC bus 3
11.Micro-capacitance sensor interface 9 is conducive to the ubiquitous power Internet of Things framework of Popularization And Development, and becomes key node in its framework.Expansion interface
10, it according to the different voltages of municipal administration load can require that corresponding isolated form DC-DC pressure regulation unit 12 is arranged, for filling to electric vehicle
The power supply such as power station, electric vehicle electrical changing station, road display screen, park plaza Landscape Lamp, traffic signals monitoring, billboard；Battery
Device 11, it can be achieved that the clean energy resourcies such as wind energy, solar energy storage.
Now according to conventional road lamp the radius of electricity supply 0.75km, every loop power supply load 19kW, using YJV-0.6/ in certain city
For the trunk illuminalive power-supply cable of 1kV3 × 25+2 × 16 is made comparisons, using the distribution model of one power supply section unit of the present invention
Plan view is enclosed, as shown in Figure 2.Assuming that road is smooth vertical and horizontal spaced set, every four grids (such as a-b-f-e, f- in figure
It g-k-j) is a traditional Alternating Current Power Supply range, voltage drop is controlled -10%；Using this direct-flow distribution system, by voltage drop point
For source side and load-side, (source side is transformer to illumination main cable front end, and load-side is that lighting main cable extremely loads
End), according to CJJ45-2015 " Lighting Design of Urban Road standard " requirement, illuminator end voltage should be the 90% of voltage rating
~105%, source side and load side voltage drop are limited to -5% respectively.
Short distance current supply circuit, by taking the path o-t shown in Fig. 2 as an example, source side pressure drop is negligible, load-side pressure drop
=2.4%, using DC220V voltage, 2 × 25 liang of core copper cables meet code requirement.
Remote power-feeding circuit, by taking road shown in Fig. 2 marks the path point o-t-u-v-w as an example, supply load for 4 ×
The kW of 19kW=76, source side pressure drop=4.7%, using DC540V voltage, 2 × 70 liang of core copper cables；Load-side pressure drop=2.4%,
Using DC220V voltage, 2 × 25 liang of core copper cables；It follows that the program fully meets and has surmounted code requirement significantly.
As can be drawn from Figure 2, a traditional case becomes supply district as road mark point a-b-f-e, and uses we
After case, the supply district of a rectification centralized power distribution cabinet 1 covers the supply district that traditional nine casees become, i.e. road marks point a-
The supply district that d-q-m is enclosed.
It as shown in Figure 1, 2, can be by normal power source in special circumstances, such as when power supply amount deficiency or large-area power-cuts
Or accumulator plant 11 switches via protective switch F1 ~ F6, realization determines region and determines range power supply, to realize the confession of key area
Electricity ensures, such as the special power supply of the road mark region point a-b-f-e needs, and electricity is insufficient, at this moment can by protective switch F3,
F4, F7, F8 are disconnected, and are closed protective switch F5, and are remotely closed direct current voltage reulation power distribution cabinet 7 and are fed out circuit switching, are realized to area
Domain a-b-f-e orientation power supply.
Intelligent protection switch F1 ~ F8 has the function of isolation, four sections of protections (quick-break, short delay, long delay, ground protection),
And have communication interface.
The present invention is different from the single DC power supply powering mode of current direct current cabinet, is provided with direct current DC540 and lies prostrate direct current altogether
Bus 3 is reconfigured direct current voltage reulation power distribution cabinet 7, keeps direct current supply voltage flexible and changeable.Direct current common DC bus 3 selects DC540V,
The technical maturity of current power rectifier unit is considered, while direct current voltage reulation power distribution cabinet 7 can be directly output to, i.e., sufficiently
The related superior function of DC power supply is played, and without excessive configuration.
Claims (5)
1. a kind of town road direct current concentration-distributed distribution system, including multiple power supply sections unit；It is characterized by:
The distribution system structure of multiple power supply section units is identical, the exchange isolating transformer including 10kV/0.4kV, the friendship
Stream isolating transformer secondary coil output end is connect through the first Intelligent protection switch with exchange 0.4kV bus；The exchange 0.4kV
The first leading-out terminal of bus is connect through the second Intelligent protection switch with three-phase four-quadrant PWM controlled rectifier input terminal, the three-phase
Four-quadrant PWM controlled rectifier output end is connect through third Intelligent protection switch with common DC bus；The common DC bus is defeated
Outlet is connected with short distance current supply circuit and remote power-feeding circuit；The short distance current supply circuit is converted by isolated form DC-DC
Device and the more set LED street lamp terminals being arranged in parallel form, and the 4th intelligent protection of isolated form DC-DC converter end of incoming cables is opened
Pass is connect with common DC bus, and isolated form DC-DC converter leading-out terminal is by two core copper cables and covers the LED street lamp end more
End；The remote power-feeding circuit is by direct current voltage reulation power distribution cabinet and is arranged in parallel in the more of the direct current voltage reulation power distribution cabinet leading-out terminal
LED street lamp terminal composition is covered, direct current voltage reulation power distribution cabinet end of incoming cables passes through two core copper cables and the 5th Intelligent protection switch
Leading-out terminal connection, the 5th Intelligent protection switch end of incoming cables is connect with common DC bus.
2. town road direct current concentration-distributed distribution system according to claim 1, it is characterised in that: the exchange
The second leading-out terminal of 0.4kV bus is connect through the 6th Intelligent protection switch with exchange 0.4kV backup power source.
3. town road according to claim 1 or claim 2 direct current concentration-distributed distribution system, it is characterised in that: described remote
It is multiple apart from current supply circuit.
4. town road according to claim 1 or claim 2 direct current concentration-distributed distribution system, it is characterised in that: described three
Phase four-quadrant PWM controlled rectifier output voltage is DC540 volt, the isolated form DC-DC converter and direct current voltage reulation power distribution cabinet
Output voltage is DC220V or DC110V.
5. town road according to claim 1 or claim 2 direct current concentration-distributed distribution system, it is characterised in that: described total
DC bus output end is connected with micro-capacitance sensor interface through the 7th Intelligent protection switch, is connected with extension through the 8th Intelligent protection switch
Interface is connected with accumulator plant on common DC bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793610.4A CN110380401A (en) | 2019-08-27 | 2019-08-27 | Town road direct current concentration-distributed distribution system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910793610.4A CN110380401A (en) | 2019-08-27 | 2019-08-27 | Town road direct current concentration-distributed distribution system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110380401A true CN110380401A (en) | 2019-10-25 |
Family
ID=68260641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910793610.4A Pending CN110380401A (en) | 2019-08-27 | 2019-08-27 | Town road direct current concentration-distributed distribution system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110380401A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754536A (en) * | 2010-01-27 | 2010-06-23 | 深圳市世纪新泰达电子有限公司 | Power-supply system and power-supply method for providing power for illuminating system |
| CN102340138A (en) * | 2010-07-28 | 2012-02-01 | 北京迎希科技有限公司 | Power supply and distribution system for building |
| CN104578166A (en) * | 2015-01-29 | 2015-04-29 | 国家电网公司 | Alternating current-direct current micro-grid system on basis of electricity energy collector |
| CN104883779A (en) * | 2015-05-14 | 2015-09-02 | 西安和合光电科技有限公司 | Solar power generation high-voltage direct-current centralized-power-supply LED street lamp system |
| CN205017058U (en) * | 2015-09-22 | 2016-02-03 | 广东安和威电力建设有限公司 | Fill and trade two segmentation dc bus power supply system of electric formula charging station |
| CN105680488A (en) * | 2016-01-27 | 2016-06-15 | 东南大学 | MMC (modular multiple converter) type multi-port power electronic transformer applied to alternating current/direct current hybrid power distribution network |
| CN106130058A (en) * | 2016-08-24 | 2016-11-16 | 深圳供电局有限公司 | A kind of bipolar multilamellar low-voltage direct distribution system for building construction |
| CN207234419U (en) * | 2017-06-09 | 2018-04-13 | 上海大周信息科技有限公司 | Looped network of DC power framework based on multiport residents energy source router |
| CN207304020U (en) * | 2017-09-05 | 2018-05-01 | 青岛特来电新能源有限公司 | Distribution system and low-voltage distribution system |
| CN207398833U (en) * | 2017-10-31 | 2018-05-22 | 三峡大学 | A kind of multilayer closed loop power distribution system suitable for intelligent building |
| CN110137936A (en) * | 2019-05-07 | 2019-08-16 | 许继电气股份有限公司 | A kind of building low-voltage DC supply system |
| CN210224958U (en) * | 2019-08-27 | 2020-03-31 | 河南省水利勘测设计研究有限公司 | Direct-current centralized-distributed power distribution system for municipal roads |
-
2019
- 2019-08-27 CN CN201910793610.4A patent/CN110380401A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754536A (en) * | 2010-01-27 | 2010-06-23 | 深圳市世纪新泰达电子有限公司 | Power-supply system and power-supply method for providing power for illuminating system |
| CN102340138A (en) * | 2010-07-28 | 2012-02-01 | 北京迎希科技有限公司 | Power supply and distribution system for building |
| CN104578166A (en) * | 2015-01-29 | 2015-04-29 | 国家电网公司 | Alternating current-direct current micro-grid system on basis of electricity energy collector |
| CN104883779A (en) * | 2015-05-14 | 2015-09-02 | 西安和合光电科技有限公司 | Solar power generation high-voltage direct-current centralized-power-supply LED street lamp system |
| CN205017058U (en) * | 2015-09-22 | 2016-02-03 | 广东安和威电力建设有限公司 | Fill and trade two segmentation dc bus power supply system of electric formula charging station |
| CN105680488A (en) * | 2016-01-27 | 2016-06-15 | 东南大学 | MMC (modular multiple converter) type multi-port power electronic transformer applied to alternating current/direct current hybrid power distribution network |
| CN106130058A (en) * | 2016-08-24 | 2016-11-16 | 深圳供电局有限公司 | A kind of bipolar multilamellar low-voltage direct distribution system for building construction |
| CN207234419U (en) * | 2017-06-09 | 2018-04-13 | 上海大周信息科技有限公司 | Looped network of DC power framework based on multiport residents energy source router |
| CN207304020U (en) * | 2017-09-05 | 2018-05-01 | 青岛特来电新能源有限公司 | Distribution system and low-voltage distribution system |
| CN207398833U (en) * | 2017-10-31 | 2018-05-22 | 三峡大学 | A kind of multilayer closed loop power distribution system suitable for intelligent building |
| CN110137936A (en) * | 2019-05-07 | 2019-08-16 | 许继电气股份有限公司 | A kind of building low-voltage DC supply system |
| CN210224958U (en) * | 2019-08-27 | 2020-03-31 | 河南省水利勘测设计研究有限公司 | Direct-current centralized-distributed power distribution system for municipal roads |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103280705B (en) | Multifunctional integration photovoltaic power generation device | |
| CN113644736B (en) | Multisource power supply system of 5G base station intelligent microgrid | |
| CN105896726B (en) | A kind of wind and light complementary power supply system applied to mobile substation | |
| CN113659609B (en) | Single-wire series direct-current high-voltage remote intelligent power supply system and method | |
| CN106786755A (en) | A kind of energy-storage system and control method | |
| US11949342B2 (en) | Multiple port power converter device | |
| CN210224958U (en) | Direct-current centralized-distributed power distribution system for municipal roads | |
| CN207265677U (en) | A kind of alternating current-direct current mixing micro-capacitance sensor system of varistructure | |
| CN110380401A (en) | Town road direct current concentration-distributed distribution system | |
| CN109671344A (en) | A kind of topological structure for direct current transmission and distribution constructional dynamic simulation experimental system | |
| CN109318740A (en) | Wisdom street lamp and charging pile integration apparatus based on DC power-supply system | |
| CN108767953A (en) | A kind of DC charging cabinet | |
| CN108736800A (en) | A kind of direct-current remote feeding power and solar power generation, wind power generation mixed power supply system | |
| CN210629923U (en) | Direct current power supply distribution structure | |
| CN110544932B (en) | Street lamp power supply system transformation method | |
| CN210183012U (en) | Power transmission system | |
| CN111697587A (en) | AC/DC power supply device | |
| CN106712314B (en) | Wireless energy-taking low-voltage power supply system based on electrified railway equipment | |
| CN206099519U (en) | Complementary power of scene system for mobile substation | |
| CN212022353U (en) | Indoor novel cabinet that charges | |
| CN212183379U (en) | Smart city multifunctional rod and intelligent power adapter | |
| CN211629919U (en) | Wind-solar complementary power storage and supply device | |
| CN109474004A (en) | Photovoltaic Building Integration micro-capacitance sensor architectural schemes | |
| CN212277932U (en) | Multifunctional electric pole direct current power supply system | |
| CN216904689U (en) | Wisdom lamp pole 5G little basic station supply circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |