CN110676881A - Store up contrary all-in-one and store up integrated system including its light - Google Patents
Store up contrary all-in-one and store up integrated system including its light Download PDFInfo
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- CN110676881A CN110676881A CN201911011241.5A CN201911011241A CN110676881A CN 110676881 A CN110676881 A CN 110676881A CN 201911011241 A CN201911011241 A CN 201911011241A CN 110676881 A CN110676881 A CN 110676881A
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- energy storage
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- storage battery
- power
- battery pack
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
The invention relates to an inverse storage all-in-one machine and a light storage integrated system comprising the same, wherein the inverse storage integrated machine comprises a light storage integrated inverter, an energy storage battery pack and four intelligent switches; the emergency power supply system comprises a photovoltaic interface, an energy storage battery pack, a wifi module, an ammeter, an emergency power supply interface, a grid-connected end interface, a first intelligent switch, a second intelligent switch, an emergency power supply module, a power grid module and a power grid module, wherein the photovoltaic interface is connected with a photovoltaic assembly through the first intelligent switch, the energy storage battery interface is connected with the energy storage battery pack through the second intelligent switch, the wifi module is in communication connection with the mobile terminal, the communication interface is in communication connection with; the photovoltaic and energy storage integrated inverter converts direct current generated by the photovoltaic module into alternating current and then respectively supplies power to an important load and a general load, stores redundant electric energy into the energy storage battery pack, converts the redundant electric energy into alternating current after the energy storage battery pack is fully stored, and then supplies the alternating current to a power grid; the intelligent switch monitors the electric energy factor of the branch where the intelligent switch is located, analyzes whether the branch where the intelligent switch is located breaks down or not based on the electric energy factor of the branch where the intelligent switch is located, and sends fault information to the mobile terminal.
Description
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a reverse storage all-in-one machine and a light storage integrated system comprising the same.
Background
With the increasing proportion of photovoltaic power generation systems in energy supply, independent photovoltaic power generation has randomness, intermittency and fluctuation, which inevitably affects the safe and stable operation of the system, and in order to ensure the safe stability and the electric energy quality of a photovoltaic microgrid system, a certain amount of stored energy is necessary to be allocated in the photovoltaic power generation.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides a novel inverse storage all-in-one machine and an optical storage integrated system comprising the same.
The invention solves the technical problems through the following technical scheme:
the invention provides an integrated machine with energy storage and inverse transformation, which is characterized by comprising an integrated optical storage inverter, an energy storage battery pack and four intelligent switches, wherein the integrated optical storage inverter is provided with a photovoltaic interface, an energy storage battery interface, a wifi module, a communication interface, an emergency power supply interface and a grid-connected end interface;
the system comprises a photovoltaic interface, an energy storage battery pack, a wifi module, an ammeter, an energy storage battery pack, an emergency power supply interface, a grid-connected end interface and a power grid, wherein the photovoltaic interface is connected with a photovoltaic assembly through a first intelligent switch, the energy storage battery interface is connected with the energy storage battery pack through a second intelligent switch, the wifi module is in communication connection with the mobile terminal, the communication interface is in communication connection with the ammeter and the energy storage battery pack respectively, the emergency power supply interface is electrically connected with an important load through a third intelligent switch, and the;
the photovoltaic-energy storage integrated inverter is used for converting direct current generated by the photovoltaic module into alternating current, then respectively supplying power to an important load and a general load through the emergency power supply interface and the grid-connected end interface, storing redundant electric energy into the energy storage battery pack through the energy storage battery interface and the second intelligent switch, fully storing the energy storage battery pack, then converting the redundant electric energy into alternating current, and finally supplying the alternating current to a power grid through the grid-connected end interface;
the intelligent switch is used for monitoring electric energy factors such as current, voltage, power, electric quantity and temperature of the branch where the intelligent switch is located in real time, analyzing whether the branch where the intelligent switch is located breaks down or not based on the electric energy factors of the branch where the intelligent switch is located, and sending fault information to the mobile terminal.
Preferably, the energy storage battery pack comprises two energy storage batteries, and the energy storage batteries are lithium iron phosphate batteries.
The invention also provides a light-storage integrated system which is characterized by comprising the reverse storage integrated machine, a photovoltaic module and an electric meter.
Preferably, the system further comprises a first branch switch, a second branch switch, a main switch and a bidirectional meter;
the ammeter is connected with the bidirectional meter through a first branch switch and a main switch, the bidirectional meter is connected with the power grid, the main switch is connected with a common load through a second branch switch, and a fourth intelligent switch is connected with the bidirectional meter through the first branch switch and the main switch.
Preferably, the integrated optical storage inverter converts direct current generated by the photovoltaic module into alternating current to be used by important loads and general loads through the emergency power interface and the grid-connected end interface respectively, and when the load power is low, the integrated optical storage inverter stores redundant electric energy into the energy storage battery pack through the energy storage battery interface, stores the redundant electric energy into the energy storage battery pack fully, converts the redundant electric energy into alternating current, and then supplies the alternating current to the power grid through the grid-connected end interface.
Preferably, the light-storage integrated inverter detects the power generation amount of the photovoltaic module, controls the energy storage battery pack to supply power to the important load and the general load when the power generation amount is zero, detects the residual power amount in the energy storage battery pack, and switches to the power grid to supply power to the important load and the general load when the residual power amount is lower than the set residual power amount.
Preferably, the ammeter is used for detecting current power consumption, and the light-storage integrated inverter is used for judging whether the user power consumption condition and the power grid have faults or not based on the current power consumption of the user, and cutting off power supply to a general load, but when the power grid has faults, the energy storage battery pack supplies power to an important load through the emergency power supply interface.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
the invention realizes the stable operation of the micro-grid system, fully consumes the generated energy of the photovoltaic as much as possible, improves the utilization rate of the photovoltaic, can play the role of 'peak clipping and valley filling', reduces the electric energy cost of users and has better economy.
The light storage integrated design of the reverse storage integrated machine enables the photovoltaic self-generation self-use proportion to be as high as 80%, and greatly reduces the household electricity charge; and the system solution has the function of grid-connected and off-grid operation, and is seamlessly switched to the off-grid mode under the condition of power grid outage or instability, so that the continuous and stable operation of the load is ensured, and an intelligent, flexible and changeable energy management system solution is provided for families.
The system improves the photovoltaic self-generation self-utilization rate and optimally uses renewable energy; the photovoltaic inverter and the energy storage inverter are integrally designed, so that the occupied space is small; the time-sharing is supported, multiple working modes are flexibly set, and the requirements of various application occasions are met; the system adopts a centralized management mode, integrates EMS and BMS, and has high intelligent degree; the system supports parallel and off-grid smooth switching and has an emergency power supply function.
Drawings
Fig. 1 is a schematic structural diagram of a reverse-storage all-in-one machine according to a preferred embodiment of the invention.
Fig. 2 is a schematic structural diagram of an integrated optical storage system according to a preferred embodiment of the present invention.
FIG. 3 is a schematic structural diagram of the daytime mode according to the preferred embodiment of the present invention.
Fig. 4 is a schematic structural diagram of the night mode according to the preferred embodiment of the invention.
FIG. 5 is a schematic structural diagram of the off-grid mode in the daytime according to the preferred embodiment of the invention.
Fig. 6 is a schematic structural diagram of the night off-grid mode according to the preferred embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As shown in fig. 1, the embodiment provides an inverse storage all-in-one machine, which includes an energy storage Battery pack 1, an optical storage integrated inverter 2 and four intelligent switches, where the optical storage integrated inverter has photovoltaic interfaces PV1 and PV2, an energy storage Battery interface Battery, a wifi module, a communication interface C, an emergency power interface Back-Up, and a Grid-connected interface On-Grid.
As shown in fig. 1 and 2, the photovoltaic interfaces PV1 and PV2 are connected with the photovoltaic module 20 through the first intelligent switch 3, the energy storage Battery interface Battery is connected with the energy storage Battery pack 1 through the second intelligent switch 4, the wifi module is in communication connection with the mobile terminal, the communication interface C is in communication connection with the electric meter 30 and the energy storage Battery pack 1 respectively, the emergency power source interface Back-Up is connected with the important load 50 through the third intelligent switch 5, and the Grid-connected interface On-Grid is connected with the power Grid 60 through the fourth intelligent switch 6.
The photovoltaic-energy storage integrated inverter 2 is used for converting direct current generated by the photovoltaic module 20 into alternating current, then respectively supplying power to the important load 50 and the general load 40 through the emergency power interface Back-Up and the Grid-connected end interface On-Grid, storing redundant electric energy into the energy storage Battery pack 1 through the energy storage Battery interface Battery and the second intelligent switch 4, after the energy storage Battery pack 1 is fully stored, converting the redundant electric energy into alternating current, and then supplying the alternating current to the power Grid 60 through the Grid-connected end interface On-Grid.
The intelligent switch is used for monitoring electric energy factors such as current, voltage, power, electric quantity and temperature of the branch where the intelligent switch is located in real time, analyzing whether the branch where the intelligent switch is located breaks down or not based on the electric energy factors of the branch where the intelligent switch is located, and sending fault information to the mobile terminal.
The energy storage battery pack 1 comprises two energy storage batteries, the energy storage batteries are lithium iron phosphate batteries, the capacity of a single battery is 2.4kwh, and the voltage is 48V.
As shown in fig. 2, the present embodiment further provides an integrated optical storage and inversion device system, which includes the photovoltaic module 20, the electric meter 30, the first sub switch 70, the second sub switch 80, the main switch 90, and the bidirectional meter 100.
The electric meter 30 is electrically connected with a bidirectional meter 100 through a first branch switch 70 and a main switch 90, the bidirectional meter 100 is electrically connected with the power grid 60, the main switch 90 is electrically connected with a general load 40 through a second branch switch 80, and the fourth intelligent switch 6 is electrically connected with the bidirectional meter 100 through the first branch switch 70 and the main switch 80.
As shown in fig. 3, daytime mode: the photovoltaic power generation is firstly used for the load, if the surplus is available, the battery is charged, and if the surplus is available, the surplus is fed back to the power grid. Specifically, the optical storage integrated inverter 2 converts direct current generated by the photovoltaic module 20 into alternating current to be respectively used by an important load 50 and a general load 40 through an emergency power interface Back-Up and a Grid-connected end interface On-Grid, and when the load power is small, the optical storage integrated inverter 2 stores redundant electric energy into the energy storage Battery pack 1 through the energy storage Battery interface Battery, stores the redundant electric energy into the energy storage Battery pack 1 fully, converts the redundant electric energy into alternating current, and then supplies the alternating current to the power Grid 60 through the Grid-connected end interface.
As shown in fig. 4, night mode: photovoltaic does not generate electricity at night, the reverse storage all-in-one machine discharges electricity through the battery and is used for a load, and if the electric quantity of the battery is insufficient, the residual insufficient electric quantity is obtained from a power grid. Specifically, the light-storage integrated inverter is used for detecting the power generation amount of the photovoltaic module 20, controlling the energy storage battery pack 1 to supply power to the important load 50 and the general load 40 when the power generation amount is zero, detecting the residual power amount in the energy storage battery pack 1, and switching to the power supply of the power grid 60 to the important load 50 and the general load 40 when the residual power amount is lower than the set residual power amount.
As shown in fig. 5, daytime off-grid mode: the photovoltaic power generation is firstly used for the load of the emergency power end, other common power is cut off, and if the power is left, the battery is charged. As shown in fig. 6, night off-grid mode: the inverse storage all-in-one machine is used for an emergency power end load through battery discharge, and other common electricity is cut off. Specifically, the electricity meter 30 is configured to detect current power consumption, and the light-storage integrated inverter 2 is configured to determine, based on the current power consumption of the user, whether the power consumption of the user and the power grid have a fault, and cut off power supply to the general load 40, but when the power grid has a fault, the energy storage battery pack 1 supplies power to the important load 50 through the emergency power interface Back-Up.
The product is applied to a household light-storage integrated power station, and the photovoltaic power generation system works in a full power generation state to obtain the best economic benefit. The redundant electric energy that the photovoltaic produced is stored in the energy storage group battery, treats that the electricity price fills the load when high, and the energy storage group battery still is used for stabilizing the fluctuation of photovoltaic output power. When a large power grid fails or a power failure accident occurs, the system can be switched to an off-grid operation state.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (7)
1. The integrated machine for storing and inverting is characterized by comprising an integrated optical storage inverter, an energy storage battery pack and four intelligent switches, wherein the integrated optical storage inverter is provided with a photovoltaic interface, an energy storage battery interface, a wifi module, a communication interface, an emergency power interface and a grid-connected end interface;
the system comprises a photovoltaic interface, an energy storage battery pack, a wifi module, an ammeter, an energy storage battery pack, an emergency power supply interface, a grid-connected end interface and a power grid, wherein the photovoltaic interface is connected with a photovoltaic assembly through a first intelligent switch, the energy storage battery interface is connected with the energy storage battery pack through a second intelligent switch, the wifi module is in communication connection with the mobile terminal, the communication interface is in communication connection with the ammeter and the energy storage battery pack respectively, the emergency power supply interface is electrically connected with an important load through a third intelligent switch, and the;
the photovoltaic-energy storage integrated inverter is used for converting direct current generated by the photovoltaic module into alternating current, then respectively supplying power to an important load and a general load through the emergency power supply interface and the grid-connected end interface, storing redundant electric energy into the energy storage battery pack through the energy storage battery interface and the second intelligent switch, fully storing the energy storage battery pack, then converting the redundant electric energy into alternating current, and finally supplying the alternating current to a power grid through the grid-connected end interface;
the intelligent switch is used for monitoring electric energy factors such as current, voltage, power, electric quantity and temperature of the branch where the intelligent switch is located in real time, analyzing whether the branch where the intelligent switch is located breaks down or not based on the electric energy factors of the branch where the intelligent switch is located, and sending fault information to the mobile terminal.
2. The integrated machine for energy storage and reverse osmosis according to claim 1, wherein the energy storage battery pack comprises two energy storage batteries, and the energy storage batteries are lithium iron phosphate batteries.
3. An integrated light and energy storage system, characterized in that the integrated light and energy storage system comprises the integrated reverse current storage machine as claimed in claim 1 or 2, the photovoltaic module as claimed in claim 1 and the electric meter as claimed in claim 1.
4. The integrated light-storage system according to claim 3, further comprising a first branch switch, a second branch switch, a main switch and a bidirectional meter;
the ammeter is connected with the bidirectional meter through a first branch switch and a main switch, the bidirectional meter is connected with the power grid, the main switch is connected with a common load through a second branch switch, and a fourth intelligent switch is connected with the bidirectional meter through the first branch switch and the main switch.
5. The integrated optical storage system according to claim 4, wherein the integrated optical storage inverter converts direct current generated by the photovoltaic module into alternating current to be used by an important load and a general load through the emergency power interface and the grid connection interface, respectively, and when the load power is low, the integrated optical storage inverter stores redundant electric energy into the energy storage battery pack through the energy storage battery interface, and after the energy storage battery pack is fully stored, converts the redundant electric energy into alternating current to be supplied to the power grid through the grid connection interface.
6. The integrated light-storage system according to claim 4, wherein the integrated light-storage inverter detects the power generation amount of the photovoltaic module, controls the energy storage battery pack to supply power to the important load and the general load when the power generation amount is zero, detects the residual power amount in the energy storage battery pack, and switches to the power grid to supply power to the important load and the general load when the residual power amount is lower than the set residual power amount.
7. The integrated light-storage system as claimed in claim 4, wherein the electricity meter is used for detecting the current power consumption, and the integrated light-storage inverter is used for judging the power consumption of the user and whether the power grid fails or not based on the current power consumption of the user, and cutting off the power supply to the general loads, but when the power grid fails, the energy storage battery pack supplies power to the important loads through the emergency power interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911011241.5A CN110676881A (en) | 2019-10-23 | 2019-10-23 | Store up contrary all-in-one and store up integrated system including its light |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911011241.5A CN110676881A (en) | 2019-10-23 | 2019-10-23 | Store up contrary all-in-one and store up integrated system including its light |
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| CN110676881A true CN110676881A (en) | 2020-01-10 |
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| CN201911011241.5A Pending CN110676881A (en) | 2019-10-23 | 2019-10-23 | Store up contrary all-in-one and store up integrated system including its light |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346532A (en) * | 2021-06-30 | 2021-09-03 | 阳光电源股份有限公司 | Power converter, light storage power generation system and control method thereof |
| CN116707108A (en) * | 2023-08-04 | 2023-09-05 | 深圳安培时代数字能源科技有限公司 | Electric energy processing method and related device |
-
2019
- 2019-10-23 CN CN201911011241.5A patent/CN110676881A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113346532A (en) * | 2021-06-30 | 2021-09-03 | 阳光电源股份有限公司 | Power converter, light storage power generation system and control method thereof |
| CN116707108A (en) * | 2023-08-04 | 2023-09-05 | 深圳安培时代数字能源科技有限公司 | Electric energy processing method and related device |
| CN116707108B (en) * | 2023-08-04 | 2024-01-12 | 深圳安培时代数字能源科技有限公司 | Electric energy processing method and related device |
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