CN113315161A - Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology - Google Patents
Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology Download PDFInfo
- Publication number
- CN113315161A CN113315161A CN202110746441.6A CN202110746441A CN113315161A CN 113315161 A CN113315161 A CN 113315161A CN 202110746441 A CN202110746441 A CN 202110746441A CN 113315161 A CN113315161 A CN 113315161A
- Authority
- CN
- China
- Prior art keywords
- power
- energy
- charging
- power grid
- management system
- 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
Images
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
- 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
- H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
Abstract
The invention relates to a comprehensive energy station dual-power supply solution based on a light storage and charging micro-grid technology, which specifically comprises the following steps: when the electricity price is high in the daytime, electricity in the battery is inverted to supply power to other equipment, so that the electricity consumption cost is reduced; when the power failure of the power grid is detected, the energy management system detects that no voltage exists in the power grid through a voltage sampling line between a power distribution cabinet and a box type transformer in the comprehensive energy station, and sends an instruction to disconnect an alternating current contactor between the power distribution cabinet and the box type transformer, so that the voltage of the power grid end cannot be detected when a call comes. The invention has the beneficial effects that: the high-power direct-current pile is replaced by the light storage and charging system, so that the problem of power distribution capacity increase is effectively solved; UPS all is the product of doing with new battery, and the energy storage battery in the light storage charging system can use the battery that the car was eliminated, can play the battery echelon and utilize the purpose, plays environmental protection effect, and the convenient dilatation of energy storage system.
Description
Technical Field
The invention belongs to the field of power supply of an integrated energy station, and particularly relates to a dual-power supply solution of the integrated energy station based on a light storage and charging micro-grid technology.
Background
With the progress of the times, new energy automobiles develop rapidly, and the traditional gas station has difficulty in meeting the fuel supply under the existing vehicle structure. Therefore, the demand of a comprehensive energy station integrating the functions of gas filling, oil filling, charging, hydrogenation and the like is increasing day by day. As shown in fig. 1, a high-power UPS is provided in a common integrated energy station to serve as a backup power supply, so as to prevent the integrated energy station from being incapable of operating normally due to sudden power failure of a power grid. However, the high-power UPS has higher cost and low utilization rate. If the light storage and charging system is built in the comprehensive energy station, the roof distributed photovoltaic construction is developed, an economical and reasonable energy storage system is combined, the unified physical integration with the station-level charging pile is realized, and the integrated local and remote energy management system is developed. The peak-valley profit sharing and new energy consumption of the energy storage system are utilized at ordinary times, and the UPS function can be replaced when the power grid is powered off.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a comprehensive energy station dual-power supply solution based on the light storage and charging micro-grid technology.
This kind of light stores up fills microgrid, includes: the system comprises an energy management system, a charging pile, a comprehensive energy station and an energy storage system; the comprehensive energy station is connected to a power grid; an alternating current contactor and a voltage sampling line are added between a power distribution cabinet and a box-type transformer in the comprehensive energy station, and a power grid voltage sampling point is arranged on the voltage sampling line; a light storage and charging system is arranged in the comprehensive energy station; the energy management system is electrically connected with the grid voltage sampling point and the light storage and charging system; a DC/AC module is arranged in the charging pile, the comprehensive energy station is electrically connected with the DC/AC module, the energy management system is electrically connected with the DC/AC module, and the DC/AC module is electrically connected with the energy storage system; a direct current contactor, a fuse, a shunt, a direct current meter and an isolating switch are arranged on a connecting line between the DC/AC module and the energy storage system; an Uninterruptible Power Supply (UPS) is also arranged in the comprehensive energy station.
Preferably, the light storage and charging system in the comprehensive energy station comprises a photovoltaic panel, an energy storage battery and a direct current charging pile.
Preferably, the energy storage battery in the light storage and charging system can use a battery eliminated by an automobile, the energy storage system is convenient to expand, and the purpose of gradient utilization of the battery can be achieved.
Preferably, the grid is a three-phase power.
The comprehensive energy station dual-power solution based on the light storage and charging micro-grid technology specifically comprises the following steps:
when the electricity price is high in the daytime, electricity in the battery is inverted to supply power to other equipment, so that the electricity consumption cost is reduced;
when the power failure of the power grid is detected, an Energy Management System (EMS) detects that no voltage exists in the power grid through a voltage sampling line between a power distribution cabinet and a box type transformer in a comprehensive energy station, and the Energy Management System (EMS) sends an instruction to disconnect an alternating current contactor between the power distribution cabinet and the box type transformer, so that the voltage of the power grid end cannot be detected when a call comes; then, a low-voltage power supply is taken from the energy storage system to supply power to the energy management system, the Energy Management System (EMS) sends an instruction to start a DC/AC module in the charging pile, the energy storage system is controlled to output corresponding voltage through a direct current contactor, and the output electric quantity of the energy storage system is monitored through a shunt and a direct current meter; an isolation switch and fuse protection circuit; the output voltage of the energy storage system is inverted into AC 380V three-phase power through a DC/AC module to be supplied to the comprehensive energy station for power supply;
when the power grid outage is detected and the power grid is restored to supply power, once an Energy Management System (EMS) detects the power grid electrification, the energy storage system stops voltage output, meanwhile, the Energy Management System (EMS) sends an instruction to attract an alternating current contactor between a power distribution cabinet and a box-type transformer, the operation of a DC/AC module in a charging pile is stopped, and the commercial power is restored to supply power to the charging pile and a comprehensive energy station through the power grid;
when detecting that the power grid is not powered off, an Energy Management System (EMS) directly allocates commercial power to the power grid for charging piles and comprehensive energy stations.
Preferably, when the power grid outage is detected, the energy storage system supplies power to the energy management system by using a low-voltage power supply of 10V-13V.
Preferably, when the grid outage is detected and the power supply of the grid is restored, the Energy Management System (EMS) detects the power-on of the grid as 380V ac voltage on the grid.
Preferably, when the power grid outage is detected, the energy management system controls the output voltage of the energy storage system to be inverted from 448V-584V direct current to AC 380V three-phase power to be supplied to the comprehensive energy station and the charging pile for use.
Preferably, during the inversion of the output voltage of the energy storage system, the energy management system detects the voltage state of the power grid at all times.
The invention has the beneficial effects that:
the energy storage battery in the optical storage and charging system replaces a high-power UPS, the UPS can only play a role during power failure, the energy storage battery in the optical storage and charging system can also utilize peak-valley electricity to carry out peak-valley profit sharing, new energy consumption, energy conservation and emission reduction at ordinary times, the input of electricity charge is reduced, the UPS can only drive part of low-power electrical appliances to operate, and the optical storage and charging system has higher power and can drive the whole station electrical appliances to operate; wherein the peak valley arbitrage means: charging the battery at night when the electricity price is low, and inverting the electricity in the battery to supply power to other equipment when the electricity price is high in the daytime; the problem that the UPS power is not enough to drive the station house power demand is solved;
the invention uses the light storage and charging system to replace a high-power direct-current pile, thereby effectively solving the problem of power distribution capacity increase; UPS all is the product of doing with new battery, and the energy storage battery in the light storage charging system can use the battery that the car was eliminated, can play the battery echelon and utilize the purpose, plays environmental protection effect, and the convenient dilatation of energy storage system.
Drawings
FIG. 1 is a schematic diagram of a power outage scenario for a conventional integrated energy station;
FIG. 2 is a schematic diagram of a power supply scheme of the integrated energy station of the present invention;
fig. 3 is a schematic diagram of the optical storage and charging microgrid of the present invention;
fig. 4 is a flow chart of the dual power supply solution of the integrated energy station of the present invention.
Description of reference numerals: alternating current contactor 1, grid voltage sampling point 2, energy management system 3, DC/AC module 4, direct current contactor 5, fuse 6, shunt 7, direct current ammeter 8, isolator 9, energy storage system 10, electric wire netting 11, comprehensive energy station 12, uninterrupted power source 13, fill electric pile 14, light storage system 15.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for a person skilled in the art, several modifications can be made to the invention without departing from the principle of the invention, and these modifications and modifications also fall within the protection scope of the claims of the present invention.
Example one
An embodiment of the present application provides an optical storage and charging microgrid as shown in fig. 3, including: the system comprises an energy management system 3, a charging pile 14, a comprehensive energy station 12 and an energy storage system 10; the comprehensive energy station 12 is connected to a power grid 11 (three-phase power); an alternating current contactor 1 and a voltage sampling line are added between a power distribution cabinet and a box-type transformer in the comprehensive energy station 12, and a power grid voltage sampling point 2 is arranged on the voltage sampling line; a light storage and charging system 15 (a photovoltaic panel, an energy storage battery and a direct current charging pile) is arranged in the comprehensive energy station 12; the energy management system 3 is electrically connected with the network voltage sampling point 2 and the light storage and charging system 15; the energy storage battery in the light storage and charging system 15 can use the battery eliminated by the automobile, the energy storage system is convenient to expand, and the purpose of utilizing the battery in a gradient manner can be achieved.
A DC/AC module 4 is arranged in the charging pile 14, the comprehensive energy station 12 is electrically connected with the DC/AC module 4, the energy management system 3 is electrically connected with the DC/AC module 4, and the DC/AC module 4 is electrically connected with the energy storage system 10; a direct current contactor 5, a fuse 6, a shunt 7, a direct current ammeter 8 and an isolating switch 9 are arranged on a connecting line between the DC/AC module 4 and the energy storage system 10;
an Uninterruptible Power Supply (UPS)13 is also provided in the integrated energy station 12.
Example two
On the basis of the first embodiment, the second embodiment of the present application provides a dual power supply solution for an integrated energy station based on the optical storage and charging microgrid technology as shown in fig. 2 and 4:
when the electricity price is low at night, the energy storage system 10 is charged through the commercial power, and when the electricity price is high at daytime, the electricity in the battery is inverted to supply power to other equipment, so that the electricity utilization cost is reduced;
when the power failure of the power grid 11 is detected, the energy management system 3(EMS) detects that no voltage exists in the power grid 11 through a voltage sampling line between a power distribution cabinet and a box type transformer in the comprehensive energy station 12, and the energy management system 3(EMS) sends an instruction to disconnect the alternating current contactor 1 between the power distribution cabinet and the box type transformer, so that the voltage of the power grid end cannot be detected when a call comes in; then, a 10V-13V low-voltage power supply is taken from the energy storage system 10 to supply power to the energy management system 3, the energy management system 3(EMS) sends an instruction to start the DC/AC module 4 in the charging pile 14, the energy storage system 10 is controlled to output corresponding voltage through the direct current contactor 5, and the output electric quantity of the energy storage system 10 is monitored through the shunt 7 and the direct current meter 8; the isolating switch 9 and the fuse 6 protect the circuit; the output voltage of the energy storage system 10 is inverted into AC 380V three-phase power through the DC/AC module 4 (448V-584V) to be supplied to the comprehensive energy station 12 for power supply, and the energy management system always detects the voltage state of the power grid 11;
when the power failure of the power grid 11 is detected and the power supply of the power grid 11 is recovered, once the energy management system 3(EMS) detects the power-on of the power grid 11 (380V alternating current voltage on the power grid 11 is detected), the energy storage system 10 stops voltage output, meanwhile, the energy management system 3(EMS) sends an instruction to attract an alternating current contactor 1 between a power distribution cabinet and a box-type transformer, the operation of a DC/AC module 4 in a charging pile 14 is stopped, and the commercial power is recovered to supply power to the charging pile 14 and the comprehensive energy station 12 through the power grid 11;
when detecting that the power grid 11 is not powered off, the energy management system 3(EMS) directly allocates the commercial power to the power grid 11 for the charging pile 14 and the comprehensive energy station 12.
Claims (9)
1. An optical storage and charging microgrid, comprising: the system comprises an energy management system (3), a charging pile (14), a comprehensive energy station (12) and an energy storage system (10);
the comprehensive energy station (12) is connected to a power grid (11); an alternating current contactor (1) and a voltage sampling line are added between a power distribution cabinet and a box-type transformer in the comprehensive energy station (12), and a power grid voltage sampling point (2) is arranged on the voltage sampling line; a light storage and charging system (15) is arranged in the comprehensive energy station (12); the energy management system (3) is electrically connected with the network voltage sampling point (2) and the light storage and charging system (15);
a DC/AC module (4) is arranged in the charging pile (14), the comprehensive energy station (12) is electrically connected with the DC/AC module (4), the energy management system (3) is electrically connected with the DC/AC module (4), and the DC/AC module (4) is electrically connected with the energy storage system (10); a direct current contactor (5), a fuse (6), a shunt (7), a direct current meter (8) and an isolating switch (9) are arranged on a connecting line between the DC/AC module (4) and the energy storage system (10);
an uninterrupted power supply (13) is also arranged in the comprehensive energy station (12).
2. The optical storage and charging microgrid of claim 1, wherein: the light storage and charging system (15) in the comprehensive energy station (12) comprises a photovoltaic panel, an energy storage battery and a direct current charging pile.
3. The optical storage and charging microgrid of claim 2, wherein: the energy storage battery in the light storage and charging system (15) uses a battery eliminated by an automobile.
4. The optical storage and charging microgrid of claim 1, wherein: the power grid (11) is three-phase power.
5. The comprehensive energy station dual-power supply solution based on the light storage and charging micro-grid technology of claim 1 is characterized in that the solution specifically comprises:
charging the energy storage system (10) through commercial power when the electricity price is low at night;
when the power failure of the power grid (11) is detected, the energy management system (3) detects that no voltage exists in the power grid (11) through a voltage sampling line between a power distribution cabinet and a box-type transformer in the comprehensive energy station (12), and the energy management system (3) sends an instruction to disconnect an alternating current contactor (1) between the power distribution cabinet and the box-type transformer; then, a low-voltage power supply is taken from the energy storage system (10) to supply power to the energy management system (3), the energy management system (3) sends an instruction to start a DC/AC module (4) in a charging pile (14), the energy storage system (10) is controlled to output corresponding voltage through a direct current contactor (5), and the output electric quantity of the energy storage system (10) is monitored through a shunt (7) and a direct current electric meter (8); a protection circuit of the disconnecting switch (9) and the fuse (6); the output voltage of the energy storage system (10) is inverted into AC 380V three-phase power through the DC/AC module (4) and supplied to the comprehensive energy station (12) for power supply;
when the power failure of the power grid (11) is detected and the power grid (11) is restored to supply power, once the energy management system (3) detects the power on of the power grid (11), the energy storage system (10) stops voltage output, meanwhile, the energy management system (3) sends an instruction to attract an alternating current contactor (1) between a power distribution cabinet and a box-type transformer, the operation of a DC/AC module (4) in a charging pile (14) is stopped, and the commercial power is restored to supply power to the charging pile (14) and the comprehensive energy station (12) through the power grid (11);
when the power grid (11) is detected not to be powered off, the energy management system (3) directly allocates commercial power to the power grid (11) for the charging pile (14) and the comprehensive energy station (12) to use.
6. The integrated energy station dual power supply solution based on the light storage and charging microgrid technology of claim 5, characterized in that: when the power failure of the power grid (11) is detected, the energy storage system (10) supplies power to the energy management system (3) by taking a low-voltage power supply of 10V-13V.
7. The integrated energy station dual power supply solution based on the light storage and charging microgrid technology of claim 5, characterized in that: when the power failure of the power grid (11) is detected and the power supply of the power grid (11) is recovered, the energy management system (3) detects the power-on of the power grid (11) as 380V alternating voltage on the power grid (11).
8. The integrated energy station dual power supply solution based on the light storage and charging microgrid technology of claim 5, characterized in that: when the power failure of the power grid (11) is detected, the energy management system (3) controls the output voltage of the energy storage system (10) to be inverted from 448V-584V direct current into AC 380V three-phase power to be supplied to the comprehensive energy station (12) and the charging pile (14) for use.
9. The integrated energy station dual power supply solution based on the light storage and charging microgrid technology of claim 8, characterized in that: during the inversion period of the output voltage of the energy storage system (10), the energy management system always detects the voltage state of the power grid (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110746441.6A CN113315161A (en) | 2021-07-01 | 2021-07-01 | Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110746441.6A CN113315161A (en) | 2021-07-01 | 2021-07-01 | Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113315161A true CN113315161A (en) | 2021-08-27 |
Family
ID=77381429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110746441.6A Pending CN113315161A (en) | 2021-07-01 | 2021-07-01 | Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113315161A (en) |
-
2021
- 2021-07-01 CN CN202110746441.6A patent/CN113315161A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107534298B (en) | Mixing inverter power control system for PV string, battery, power grid and Alternative load | |
| US11043835B2 (en) | Method of using a minimum cost EVPV for vehicle-solar-grid integration | |
| CN102035249B (en) | Direct current power supply emergency system of transformer substation based on lithium iron battery | |
| CN206135505U (en) | Little electric wire netting suitable for electric automobile difference demand of charging | |
| US8946933B2 (en) | Power management apparatus and method of operating the same | |
| CN105634075A (en) | Mobile rapid electric vehicle charging apparatus | |
| CN109245085A (en) | DC energy storage backup power supply and control method with peak load shifting function | |
| CN203850910U (en) | Electrical vehicle power supply device based on direct-current microgrid | |
| CN203261082U (en) | Emergency power supply and stereo garage for stereo parking device | |
| CN104795881A (en) | Wind-light complementary power supply controller, microgrid system and microgrid system power supply method | |
| KR20140137545A (en) | Smart switchgear having energy storage module | |
| CN205646856U (en) | Portable quick electric automobile charging device | |
| TWI692168B (en) | Multifunctional electric energy supply system | |
| CN214176917U (en) | Family energy storage cabinet with universality | |
| CN104124751A (en) | Automatic power supply system circuit for emergency security safeguard power generation | |
| CN214798892U (en) | Light storage and charging micro-grid | |
| CN113315161A (en) | Comprehensive energy station dual-power supply solution based on light storage and charging micro-grid technology | |
| CN105184406A (en) | Green data center standby power system optimization design method | |
| CN210404760U (en) | Movable fills integrative device that stores up | |
| CN204559220U (en) | Wind light mutual complementing power-supply controller and micro-grid system | |
| CN209313526U (en) | It is small proportion, multi-functional output hybrid ups power vehicle | |
| CN110752612A (en) | Movable fills integrative device that stores up | |
| CN212323743U (en) | Organic Rankine cycle power generation, charging and discharging energy storage integrated system | |
| CN109412262A (en) | Small proportion, the hybrid ups power vehicle of multi-functional output and application method | |
| CN217159305U (en) | Uninterrupted power supply for acquisition of transformer area |
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 |