CN216215898U - Highway direct current remote power supply system - Google Patents
Highway direct current remote power supply system Download PDFInfo
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- CN216215898U CN216215898U CN202122119540.XU CN202122119540U CN216215898U CN 216215898 U CN216215898 U CN 216215898U CN 202122119540 U CN202122119540 U CN 202122119540U CN 216215898 U CN216215898 U CN 216215898U
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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- 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
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/123—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving renewable energy sources
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/248—UPS systems or standby or emergency generators
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- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The utility model discloses a highway direct-current remote power supply system which is used for supplying power to each load device in a highway, and the highway direct-current remote power supply system comprises local terminal machine devices and at least one remote terminal system, wherein each remote terminal system is sequentially distributed along the highway, each remote terminal system is correspondingly connected with at least one load device, each remote terminal system comprises a remote terminal machine, each remote terminal machine comprises a power converter for providing voltage conversion, each remote terminal system further comprises a distributed photovoltaic device for dynamic capacity expansion and stable power supply, and a remote energy storage device for supplying power to each load device. The utility model solves the problems that stable direct current cannot be output and a load cannot work when a power grid fails or local side machine equipment fails in the prior art, and meanwhile, the capacity of a power supply system is expanded, so that the transmission capacity of the power grid is effectively improved, the problem of power grid failure is solved, and the stability of power supply voltage is ensured.
Description
Technical Field
The utility model relates to the technical field of power supply, in particular to a direct-current remote power supply system for an expressway.
Background
A highway remote power supply system is an integrated power supply system solution for a highway to supply power from a service area, a toll station and a stable commercial power access point to highway load equipment along the line, wherein the load along the line comprises monitoring camera points, meteorological monitoring, information boards, short tunnel lighting and other facilities.
The conventional DC power supply system is configured to divide a power supply area required by a highway into a plurality of power supply units according to a set distance, set at least one ac local terminal in each power supply unit, convert commercial power into DC voltage of DC400V or DC800V, and transmit the DC voltage to a remote terminal via a cable, where the remote terminal outputs a voltage class required by a load to perform load operation after voltage conversion.
The existing traditional direct current remote supply mode has the defects that the capacity of a local terminal machine is fixed, a system cannot dynamically expand, and when the load capacity requirement of the system is increased, the line transformation cost is high. Meanwhile, when a power grid fails or local side machine equipment fails, stable direct current cannot be output, and the load cannot work.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a direct-current remote power supply system for an expressway, which aims to solve the problems in the prior art.
In order to achieve the purpose, the utility model provides the following technical scheme: a highway direct current remote power supply system is used for supplying power to each load device in a highway, and comprises local terminal equipment and at least one remote system, wherein each remote system is sequentially arranged along the highway, and is respectively and correspondingly connected with at least one load device;
the local terminal equipment is connected with the remote terminal system closest to the local terminal equipment, each remote terminal system is sequentially arranged along the highway and is adjacently connected with each other, the local terminal equipment is used for accessing commercial power, and each remote terminal system is cascaded by the local terminal equipment to obtain power and is used for supplying power to each load equipment connected with each remote terminal system;
each far-end system respectively all includes the remote machine, in each far-end system structure: the remote machine comprises a power converter for providing voltage conversion;
the local terminal equipment is connected with the power supply converter power taking end in the remote terminal system closest to the local terminal equipment, based on the fact that the rest of the remote terminal systems are sequentially arranged along the highway, the power supply converter power taking ends in the rest of the remote terminal systems are respectively connected with the power supply ends of the power supply converters in the remote terminal systems adjacent to the local terminal equipment in the direction facing the local terminal equipment, and meanwhile, the power supply ends of the power supply converters in the remote terminal systems are respectively connected with the load equipment for supplying power.
Further, each remote system structure also comprises distributed photovoltaic equipment.
Furthermore, the remote system also comprises remote energy storage equipment, and the power converter is respectively connected with the corresponding distributed photovoltaic equipment and the remote energy storage equipment through the micro-break switch.
Furthermore, the local terminal equipment comprises an alternating current circuit breaker and an AC/DC module, wherein the input end of the alternating current circuit breaker forms the input end of the local terminal equipment, the output end of the alternating current circuit breaker is connected with the input end of the AC/DC module, the output end of the AC/DC module forms the output end of the local terminal equipment, and commercial power flows into the AC/DC module through the alternating current circuit breaker and is converted into direct current voltage to be output;
the control module is respectively connected with the alternating current circuit breaker and the AC/DC module.
Furthermore, the local terminal equipment also comprises a filtering conversion module, and the input end and the output end of the filtering conversion module are connected between the alternating current circuit breaker and the AC/DC module.
Furthermore, the remote machine also comprises a carrier communication module which is connected with the power converter and is used for transmitting signal instructions;
the local terminal equipment also comprises a carrier communication module and a control module for instruction control, wherein the control module is respectively connected with the alternating current circuit breaker, the AC/DC module, the filtering conversion module and the carrier communication module in the local terminal equipment.
Further, the power converter provides a power taking end and a power supply end for standby through the micro-disconnection switch.
Compared with the prior art, the highway direct-current remote power supply system has the advantages that the effect of dynamic capacity expansion of a power supply system is achieved by adding the distributed photovoltaic power generation equipment and the remote energy storage equipment, the transmission capacity of a power grid is effectively improved, meanwhile, the energy storage device is arranged to solve the problem of power grid faults, the stability of power supply voltage at a load end is ensured, the problem that stable direct-current voltage cannot be output in the prior art is solved, and the running states of local-end machine equipment and the remote machine can be monitored in real time through the communication function of the carrier communication module.
Drawings
FIG. 1 is a schematic structural diagram of a DC remote power supply system for an expressway according to the present invention;
fig. 2 is a schematic structural diagram of a local end machine according to an exemplary embodiment of the present invention;
FIG. 3 is a schematic diagram of a system communication link according to an exemplary embodiment of the present invention;
FIG. 4 is a schematic diagram of a remote unit configuration in accordance with an exemplary embodiment of the present invention;
fig. 5 is a schematic diagram of a remote system according to an exemplary embodiment of the present invention.
Detailed Description
In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.
In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily intended to include all aspects of the utility model. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.
The highway direct-current remote power supply system according to the embodiment of the utility model shown in fig. 1-5 includes a local terminal device and at least one remote system, wherein each remote system is sequentially arranged along a highway, and each remote system is respectively and correspondingly connected with at least one load device;
the local terminal equipment is connected with the remote terminal system closest to the local terminal equipment, the remote terminal systems are sequentially arranged along the highway and are adjacently connected with each other, the local terminal equipment is used for accessing commercial power, and the remote terminal systems are cascaded by the local terminal equipment to obtain power and used for supplying power to load equipment connected with the remote terminal systems respectively;
each far-end system respectively includes the remote machine, in each far-end system structure: the remote machine comprises a power converter for providing voltage conversion;
the local terminal equipment is connected with the power supply converter power taking end in the remote terminal system closest to the local terminal equipment, based on the fact that the rest of the remote terminal systems are sequentially arranged along the highway, the power supply converter power taking ends in the rest of the remote terminal systems are respectively connected with the power supply ends of the power supply converters in the remote terminal systems adjacent to the local terminal equipment in the direction facing the local terminal equipment, and meanwhile, the power supply ends of the power supply converters in the remote terminal systems are respectively connected with the load equipment for supplying power.
Each remote system structure also includes distributed photovoltaic equipment.
Each far-end system also comprises far-end energy storage equipment, and the power converter is respectively connected with the corresponding distributed photovoltaic equipment and the far-end energy storage equipment through the micro-break switch.
The local terminal equipment comprises an alternating current breaker and an AC/DC module, wherein the input end of the alternating current breaker forms the input end of the local terminal equipment, the output end of the alternating current breaker is connected with the input end of the AC/DC module, the output end of the AC/DC module forms the output end of the local terminal equipment, and commercial power flows into the AC/DC module through the alternating current breaker and is converted into direct current voltage to be output;
and the control module is respectively connected with the alternating current circuit breaker and the AC/DC module.
The local terminal equipment also comprises a filtering conversion module, and the input end and the output end of the filtering conversion module are connected between the alternating current circuit breaker and the AC/DC module.
The remote machine also comprises a carrier communication module which is connected with the power converter and is used for transmitting signal instructions;
the local terminal equipment also comprises a carrier communication module and a control module for instruction control, wherein the control module is respectively connected with the alternating current circuit breaker, the AC/DC module, the filtering conversion module and the carrier communication module in the local terminal equipment.
The power converter provides a standby power taking end and a standby power supply end through the micro-disconnecting switch.
Particularly preferably, in conjunction with fig. 2-5, the operation principle of the highway direct-current remote power supply system is as follows:
as shown in fig. 2, the local-end equipment inputs a mains supply three-phase of 380V, the voltage sequentially passes through the alternating-current circuit breaker, the filtering conversion module and the AC/DC module and then outputs a stable direct-current voltage, the direct-current voltage range is DC 500V-850V, a carrier communication module in the local-end equipment is connected with an external control center, an instruction signal is transmitted in a carrier mode, and the receiving and sending of the instruction and the signal control of each component in the local-end equipment are realized through the control module in the local-end equipment;
as shown in fig. 3, voltage is input from the output end of the local terminal equipment to the input end of the remote terminal in the remote terminal system, each remote terminal is sequentially connected to an adjacent remote terminal or local terminal equipment, and converts high-voltage dc into ac voltage or low-voltage dc required by a load through a current converter, and the remote terminal system is further connected to a carrier communication module for transmitting command signals with the power converter, as shown in fig. 4;
preferably, as shown in fig. 5, the remote system may further be configured with distributed photovoltaic devices and remote energy storage devices, and power may be supplied to the load device through any device under the condition that the power supply voltage of the local terminal device is unstable, so that the effect of dynamic capacity expansion is achieved on the basis of not changing the local terminal device, and meanwhile, the problem of power failure of the load device due to a fault of the power supply system can be avoided, and the stability of the power supply voltage is maintained.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (7)
1. A highway direct current remote power supply system is used for supplying power to each load device in a highway, and is characterized in that the direct current remote power supply system comprises local terminal equipment and at least one remote system, wherein each remote system is sequentially distributed along the highway, and each remote system is respectively and correspondingly connected with at least one load device;
the local end machine equipment is connected with the remote end system closest to the local end machine equipment, all the remote end systems are sequentially arranged along the highway and are adjacently connected with each other, the local end machine equipment is used for accessing commercial power, and all the remote end systems are subjected to cascade connection power taking by the local end machine equipment and are used for supplying power to all load equipment connected with all the remote end systems respectively;
each far-end system respectively includes the remote machine, in each far-end system structure: the remote machine comprises a power converter for providing voltage conversion;
the local terminal equipment is connected with the power supply converter power taking end in the remote terminal system closest to the local terminal equipment, based on the fact that the rest of the remote terminal systems are sequentially arranged along the highway, the power supply converter power taking ends in the rest of the remote terminal systems are respectively connected with the power supply ends of the power supply converters in the remote terminal systems adjacent to the local terminal equipment in the direction facing the local terminal equipment, and meanwhile, the power supply ends of the power supply converters in the remote terminal systems are respectively connected with the load equipment for supplying power.
2. The highway direct-current remote power supply system according to claim 1, wherein each remote system structure further comprises distributed photovoltaic equipment.
3. The system of claim 2, further comprising a remote energy storage device in each remote system, wherein the power converter is connected to the corresponding distributed photovoltaic device and the remote energy storage device through the micro-break switch.
4. The system of claim 1, wherein the local terminal equipment comprises an AC circuit breaker and an AC/DC module, an input terminal of the AC circuit breaker forms an input terminal of the local terminal equipment, an output terminal of the AC circuit breaker is connected to an input terminal of the AC/DC module, an output terminal of the AC/DC module forms an output terminal of the local terminal equipment, and commercial power flows into the AC/DC module through the AC circuit breaker and is converted into DC voltage for output.
5. The system of claim 3, wherein the local side equipment further comprises a filter conversion module, and an input end and an output end of the filter conversion module are connected between the AC circuit breaker and the AC/DC module.
6. The system of claim 4, further comprising a carrier communication module connected to the power converter for transmitting signal commands;
the local terminal equipment also comprises a carrier communication module and a control module for instruction control, wherein the control module is respectively connected with the alternating current circuit breaker, the AC/DC module, the filtering conversion module and the carrier communication module in the local terminal equipment.
7. The system of claim 1, wherein the power converter provides a power supply terminal and a power supply terminal for standby through a micro-switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119540.XU CN216215898U (en) | 2021-09-03 | 2021-09-03 | Highway direct current remote power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122119540.XU CN216215898U (en) | 2021-09-03 | 2021-09-03 | Highway direct current remote power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216215898U true CN216215898U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122119540.XU Active CN216215898U (en) | 2021-09-03 | 2021-09-03 | Highway direct current remote power supply system |
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|---|---|
| CN (1) | CN216215898U (en) |
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2021
- 2021-09-03 CN CN202122119540.XU patent/CN216215898U/en active Active
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