CN212137297U - Light storage and charging integrated micro-grid energy management system - Google Patents
Light storage and charging integrated micro-grid energy management system Download PDFInfo
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- CN212137297U CN212137297U CN202020943661.9U CN202020943661U CN212137297U CN 212137297 U CN212137297 U CN 212137297U CN 202020943661 U CN202020943661 U CN 202020943661U CN 212137297 U CN212137297 U CN 212137297U
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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
- 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
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
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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
- Y04S10/14—Energy storage units
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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
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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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
Abstract
A light storage and charging integrated micro-grid energy management system belongs to the technical field of micro-grids. The utility model comprises a power generation unit which generates power by solar energy photovoltaic and is connected into an AC bus; the public power grid unit is used for accessing the public power grid into the micro-power grid for power supply and uploading the interference electric quantity of the micro-power grid to the public power grid; the energy storage unit is used for storing the electric energy generated by the power generation unit in a direct current mode; the load unit is used for connecting a load into the microgrid to consume electric energy; and the monitoring unit is used for monitoring and controlling equipment in the microgrid. The utility model discloses can effectively guarantee the steady operation of whole little electric wire netting, improve the utilization ratio of electric energy simultaneously, reduce the cost.
Description
Technical Field
The utility model relates to a little electric wire netting technical field especially relates to a little electric wire netting energy management system of integration is filled in light storage.
Background
In recent years, micro-grids are developed vigorously due to the advantages of low construction cost, low operation loss, no environmental pollution and the like. Photovoltaic power generation has the advantages of convenient material acquisition, mature technology and the like, is the most common new energy and is widely used by micro-grids. However, it is inevitable that environmental and time factors have great influence on photovoltaic power generation, the solar radiation amount is always dynamically changed, the photovoltaic power generation power is changed accordingly, and the photovoltaic power is lack of solar energy at night and cannot normally work. To solve the problem, an energy storage device is often arranged in the microgrid, but the use cost of the microgrid is increased, and the energy in the whole microgrid is difficult to manage and schedule, so that the resource waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that above-mentioned prior art exists, provide a little electric wire netting energy management system of integration is filled in light storage, its steady operation that can effectively guarantee whole little electric wire netting improves the utilization ratio of electric energy simultaneously, the cost is reduced.
The utility model aims at realizing through the following technical scheme:
a light storage and charging integrated microgrid energy management system comprising:
the power generation unit generates power through solar photovoltaic and is connected into the alternating current bus;
the public power grid unit is used for accessing the public power grid into the micro-power grid for power supply and uploading the interference electric quantity of the micro-power grid to the public power grid;
the energy storage unit is used for storing the electric energy generated by the power generation unit in a direct current mode;
the load unit is used for connecting a load into the microgrid to consume electric energy;
and the monitoring unit is used for monitoring and controlling equipment in the microgrid.
The utility model discloses a theory of operation: the electric energy generated by the power generation unit is supplied to the microgrid, when the power generation unit is insufficient, the energy storage unit is used for compensating power supply, and if the power supply of the energy storage unit is insufficient, the public power grid unit is used for supplementing power supply; when the power generation unit supplies excessive power, the power is stored through the energy storage unit, and after the energy storage unit is fully charged, the redundant electric quantity is uploaded to a public power grid. The utility model discloses requirement to the energy storage unit is lower, so use cost is lower, can rationally utilize public electric wire netting to carry out the electric energy dispatch simultaneously, has avoided the waste of electric energy when guaranteeing that the power supply is stabilized to the little electric wire netting.
As the utility model discloses it is preferred, the power generation unit includes photovoltaic board and photovoltaic grid-connected inverter, the photovoltaic board is connected to the alternating current bus through photovoltaic grid-connected inverter.
As the utility model discloses it is preferred, the public power grid unit includes public power grid and distribution transformer, public power grid is connected to the alternating current generating line through distribution transformer.
As the utility model discloses it is preferred, the energy storage unit includes energy storage converter and energy storage group battery, the energy storage group battery is connected to the alternating current bus through energy storage converter.
As the utility model discloses it is preferred, the load unit includes direct current load, rectifier, alternating current load and transformer, direct current load is connected to the alternating current bus through the rectifier, the alternating current load is connected to the alternating current bus through the transformer.
As the utility model discloses it is preferred, the monitoring unit includes acquisition control terminal and human-computer interaction end, acquisition control terminal and human-computer interaction end are connected to the interchange generating line through switching power supply.
Preferably, the system further comprises:
and the emergency unit is used for supplying power under the emergency condition of micro-grid failure or power failure.
As the utility model discloses preferentially, emergency unit includes generator, transformer, super capacitor and rectifier, the generator is connected to alternating current bus through the transformer, super capacitor is connected to alternating current bus through the rectifier, super capacitor is connected to the generator.
As the utility model discloses it is preferred, all be equipped with the circuit breaker between power generation unit, public electric wire netting unit, energy storage unit, load unit, the monitor cell, emergency unit and the alternating current generating line, the circuit breaker all is connected to the monitor cell.
The utility model has the advantages that:
1. the electric energy can be reasonably scheduled, the stable operation of the whole micro-grid is effectively guaranteed, meanwhile, the utilization rate of the electric energy is improved, and the cost is reduced.
2. The emergency unit can effectively prevent the emergency situation of the fault or the power failure so as to ensure the stable operation of the micro-grid.
Drawings
Fig. 1 is a schematic structural diagram of a light storage and charging integrated microgrid energy management system of the present invention;
fig. 2 is the utility model relates to a light stores up communication bus topological diagram of filling integration microgrid energy management system.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the light storage and charging integrated microgrid energy management system comprises a power generation unit, a public power grid unit, an emergency unit, an energy storage unit, a load unit and a monitoring unit, wherein each unit is connected to an alternating current bus through a circuit breaker. Wherein:
the power generation unit comprises a photovoltaic panel and a photovoltaic grid-connected inverter, the photovoltaic panel is used for converting solar energy into electric energy, the photovoltaic grid-connected inverter is used for converting direct current into alternating current, and the photovoltaic panel is connected to the alternating current bus through the photovoltaic grid-connected inverter and the circuit breaker. The power generation unit continuously transmits electric energy to the whole micro-grid.
The public power grid unit comprises a 10kV power grid and a distribution transformer, and the 10kV power grid is connected to an alternating current bus through the distribution transformer and the circuit breaker. When the power generation unit is not enough to support the power utilization power of the micro-grid during the power utilization valley period or the power generation unit and the energy storage unit are not enough to support the power utilization power of the micro-grid during the power utilization peak period, the public power grid unit is connected to the micro-grid to transmit electric energy for the whole micro-grid so as to compensate the power utilization shortage of the micro-grid. And if the generated energy of the power generation unit is interfered and the energy storage unit is full, the redundant electric quantity in the micro-grid is uploaded to the public power grid unit.
The emergency unit comprises a diesel generator, a transformer, a super capacitor and a rectifier, wherein the diesel generator is connected to the alternating current bus through the transformer and the breaker, the super capacitor is connected to the alternating current bus through the rectifier and the breaker, and the super capacitor is connected to the diesel generator. Under the sudden condition of microgrid failure or outage, the microgrid needs a diesel generator to generate power and support, however, the diesel generator needs a starting power supply to serve as a support from starting to having full load capacity, and the time consumption is long. The characteristic that the super capacitor discharges rapidly is utilized to provide instantaneous starting power and starting torque to meet the requirement of peak power of the diesel generator, so that the starting time of the diesel generator can be effectively shortened, and the diesel generator can be started easily under the low-temperature condition. Due to the natural consumption of the super capacitor, the super capacitor needs to be charged and discharged for maintenance regularly through a rectifier and a breaker so as to prolong the service life of the super capacitor.
The energy storage unit comprises an energy storage converter and an energy storage battery pack, and the energy storage battery pack is connected to the alternating current bus through the energy storage converter and the breaker. When the energy storage unit is charged, the energy storage converter rectifies alternating current in the alternating current bus and stores electric energy to the energy storage battery pack in a direct current mode, and when the energy storage unit discharges, the energy storage converter inverts the direct current released by the energy storage battery pack into alternating current and transmits the alternating current to the alternating current bus. The energy storage unit can effectively guarantee all-time and all-weather stable operation of the micro-grid, and has better economic benefit.
The load unit comprises a transformer, an alternating current load, a rectifier and a direct current load, wherein the alternating current load is connected to an alternating current bus through the transformer and a breaker, and the direct current load is connected to the alternating current bus through the rectifier and the breaker. The load unit is used for consuming electric energy, the alternating current load can be a set of a plurality of parallel alternating current loads, and not only refers to one alternating current load, but also the direct current load can be a set of a plurality of parallel direct current loads, and not only refers to one direct current load.
The monitoring unit comprises a switching power supply, an acquisition control terminal and a human-computer interaction end, wherein the acquisition control terminal and the human-computer interaction end are connected to the alternating current bus through the switching power supply and the circuit breaker. As shown in fig. 2, the human-computer interaction terminal communicates with the acquisition control terminal through an industrial ethernet, a communication bus of the system is established by establishing a topology and using TCP/IP, MOUBUS, serial ports and IEC104 communication modes, the devices in each unit transmit data to the monitoring unit through the communication bus, and a control instruction is sent from the monitoring unit to the corresponding device through the communication bus, so that system energy management is realized and real-time performance of the system is ensured. The main monitoring data includes: the system comprises a photovoltaic panel, a super capacitor battery, a battery SOC, an SOH, an alternating current load, a direct current load, an energy storage converter, an energy storage battery pack, a battery voltage, a battery temperature, a battery SOC, an SOH and the on-off state of each circuit breaker. The monitoring unit displays all data to the human-computer interaction end visually, and therefore operation of workers is facilitated.
The above description is only the specific embodiment of the preferred embodiment of the present invention, and this specific embodiment is based on the present invention, and the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A light storage and charging integrated micro-grid energy management system is characterized by comprising:
the power generation unit generates power through solar photovoltaic and is connected into the alternating current bus;
the public power grid unit is used for accessing the public power grid into the micro-power grid for power supply and uploading the interference electric quantity of the micro-power grid to the public power grid;
the energy storage unit is used for storing the electric energy generated by the power generation unit in a direct current mode;
the load unit is used for connecting a load into the microgrid to consume electric energy;
and the monitoring unit is used for monitoring and controlling equipment in the microgrid.
2. The integrated microgrid energy management system of claim 1, wherein the power generation units comprise photovoltaic panels and photovoltaic grid-connected inverters, and the photovoltaic panels are connected to the alternating current buses through the photovoltaic grid-connected inverters.
3. The integrated light storage and charging microgrid energy management system of claim 1, wherein the utility grid unit comprises a utility grid and a distribution transformer, the utility grid being connected to an alternating current bus through the distribution transformer.
4. The integrated microgrid energy management system for light storage and charging of claim 1, characterized in that the energy storage unit comprises an energy storage converter and an energy storage battery pack, and the energy storage battery pack is connected to an alternating current bus through the energy storage converter.
5. The integrated light storage and charging microgrid energy management system of claim 1, wherein the load units comprise direct current loads, rectifiers, alternating current loads and transformers, the direct current loads are connected to alternating current busbars through rectifiers, and the alternating current loads are connected to alternating current busbars through transformers.
6. The integrated microgrid energy management system for light storage and charging of claim 1, characterized in that the monitoring unit comprises an acquisition control terminal and a human-computer interaction terminal, and the acquisition control terminal and the human-computer interaction terminal are connected to an alternating current bus through a switching power supply.
7. A light storage and charging integrated microgrid energy management system according to claim 1, further comprising:
and the emergency unit is used for supplying power under the emergency condition of micro-grid failure or power failure.
8. A light storage and charging integrated microgrid energy management system according to claim 7, characterized in that said emergency units comprise a generator, a transformer, a super capacitor and a rectifier, said generator being connected to an AC bus through the transformer, said super capacitor being connected to the AC bus through the rectifier, said super capacitor being connected to said generator.
9. The integrated microgrid energy management system for light storage and charging of claim 7, characterized in that circuit breakers are arranged among the power generation unit, the public power grid unit, the energy storage unit, the load unit, the monitoring unit, the emergency unit and the alternating current bus, and are connected to the monitoring unit.
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| CN202020943661.9U CN212137297U (en) | 2020-05-29 | 2020-05-29 | Light storage and charging integrated micro-grid energy management system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525622A (en) * | 2020-05-29 | 2020-08-11 | 嘉兴市恒创电力设备有限公司 | Light storage and charging integrated micro-grid energy management system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111525622A (en) * | 2020-05-29 | 2020-08-11 | 嘉兴市恒创电力设备有限公司 | Light storage and charging integrated micro-grid energy management system and method |
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