CN108616150A - A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method - Google Patents

A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method Download PDF

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Publication number
CN108616150A
CN108616150A CN201810295693.XA CN201810295693A CN108616150A CN 108616150 A CN108616150 A CN 108616150A CN 201810295693 A CN201810295693 A CN 201810295693A CN 108616150 A CN108616150 A CN 108616150A
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CN
China
Prior art keywords
electricity
power supply
storing
photovoltaic
state
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
Application number
CN201810295693.XA
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Chinese (zh)
Inventor
李红军
王宝鸡
姚高亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHUHAI YINLONG ELECTRICAL APPLIANCE Co Ltd
Yinlong New Energy Co Ltd
Original Assignee
ZHUHAI YINLONG ELECTRICAL APPLIANCE Co Ltd
Yinlong New Energy Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZHUHAI YINLONG ELECTRICAL APPLIANCE Co Ltd, Yinlong New Energy Co Ltd filed Critical ZHUHAI YINLONG ELECTRICAL APPLIANCE Co Ltd
Priority to CN201810295693.XA priority Critical patent/CN108616150A/en
Publication of CN108616150A publication Critical patent/CN108616150A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage
    • H02J7/0072Regulation of charging or discharging current or voltage using semiconductor devices only
    • H02J7/0077Regulation of charging or discharging current or voltage using semiconductor devices only the charge cycle being terminated in response to electric parameters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/02Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/56Power conversion systems, e.g. maximum power point trackers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30Systems combining energy storage with energy generation of non-fossil origin

Abstract

The present invention discloses a kind of photovoltaic energy storage system intelligent power supply, storing up electricity method, mainly includes the following steps that:System detects the energy state of each feeder ear in real time;System detects the energy state of each feeder ear in real time;A kind of photovoltaic energy storage system intelligent power supply of present invention offer, storing up electricity method, can ensure the utilization rate of electrical at photovoltaic generation end;System makes energy storage and power supply effectively be regulated and controled by simple switching working mode, carries out balanced management and intelligent protection control by the way that system protection pattern is arranged, achievees the effect that safe and reliable.

Description

A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method
" technical field "
The invention belongs to photovoltaic generation and off-network technical field, more particularly to a kind of photovoltaic energy storage system intelligent power supply, storages Method for electrically.
" background technology "
Solar energy is inexhaustible;Solar power generation is arranged compared with thermoelectricity without carbon dioxide and pernicious gas It puts, is a kind of clean energy resource, is with a wide range of applications.
The commonplace family green energy resource system of application is usually photovoltaic generating system at present, includes mainly solar energy Photovoltaic panel, controller, accumulator, gird-connected inverter.System structure generally connects electric power storage using photovoltaic array by charge controller Pond, accumulator are connected to inverter, and inverter output end is grid-connected.But capacity usage ratio is relatively low in this kind of system, influences power supply storage The efficiency of electricity lacks necessary efficient scheduling control.
" invention content "
The present invention provides a kind of photovoltaic energy storage system intelligent power supply, storing up electricity method, can Effective Regulation system be powered Storing up electricity, saves the energy, and concrete scheme is as follows:
A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method, including:
(1) system detects the energy state of each feeder ear in real time;
(2) system executes corresponding operating mode according to the energy state of each feeder ear.
Further, the energy state of each feeder ear includes photovoltaic generation end and storing up electricity mould in the timing detection Block energy state, external power grid power supply state.
Further, the operating mode includes storing up electricity operating mode, powering mode and system protection pattern.
Further, the storing up electricity operating mode is:
(a) when the energy state of electricity storage module is charged state:
(a1) when the electric energy at photovoltaic generation end abundance, then no matter whether external power grid power supply is normal, all preferentially by photovoltaic generation It charges to electricity storage module at end;
(a2) when the electric energy at photovoltaic generation end is inadequate and also external power grid power supply it is normal when, then external power grid to electricity storage module into Row charging.
Further, the powering mode is:
(b) when the energy state of electricity storage module powers to the load state:
(b1) it when the electric energy at photovoltaic generation end abundance, is then preferentially powered to load or external power grid by photovoltaic generation end;
(b2) it when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is normal, is then powered to the load by external power grid;
(b3) when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is abnormal, then electricity storage module is supplied to load Electricity.
Further, the system protection pattern be the system in the process of running, if finding wherein one or more There is abnormal, the then connection of the system disconnection and the end in the feeder ear.
Further, the operating mode can be automatically selected or manual operation Systematic selection by system.
Further, the corresponding operating mode of the Systematic selection further includes the outside prompt system operating status of system, institute It includes that instant abnormality warning or switching working mode are reminded to state the outside prompt system situation of system.
Further, the energy state of the electricity storage module includes full power state;Charged state:It is set as total electricity 95%, when being less than the electricity, electricity storage module receives charging;Low battery state:It is set as the 20% of total electricity, is less than the electricity When, system switch protecting pattern.
A kind of photovoltaic energy storage system intelligent power supply of present invention offer, storing up electricity method, can ensure the electric energy at photovoltaic generation end Utilization rate;System makes energy storage and power supply effectively be regulated and controled by simple switching working mode, by the way that system protection is arranged Pattern carries out balanced management and intelligent protection control, achievees the effect that safe and reliable.
" description of the drawings "
Fig. 1 is photovoltaic energy storage system intelligent power supply, the storing up electricity method flow diagram of the embodiment of the present invention.
" specific implementation mode "
The specific implementation mode of the present invention is described further below in conjunction with the accompanying drawings:
A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method, including:(1) system detects the electricity of each feeder ear in real time It can state;
(2) system executes corresponding operating mode according to the energy state of each feeder ear.
The energy state that the system detects each feeder ear in real time includes:
Whether normal detect the power generation of photovoltaic generation end, when photovoltaic generation end can provide stable Current Voltage, photovoltaic The state at power generation end is normal condition, and when photovoltaic generation end provides the startup voltage that voltage is less than inverter, system warns outward System mode at this time.
The energy state amount for detecting electricity storage module, when electricity storage module low battery, when needing charging, system controls photovoltaic hair Electric end or external power grid charge to electricity storage module;When electricity storage module reaches low battery state, system switch protecting pattern is simultaneously And the system mode of outside warning at this time;When detecting electricity storage module irregular working or abnormal state or occur charging different Chang Shi sends out alarm.
Whether normal detect external power grid power supply state, when external power grid power supply is normal, external power grid can provide burning voltage or electricity It flows to load or electricity storage module.When the voltage and current of external power grid power failure or external power grid, which plays pendulum, is, system is disconnected The connection with external power grid is opened, and warns system mode at this time outward.
Systematic selection executes corresponding operating mode and judges the electric energy of electricity storage module according to the energy state of electricity storage module Whether state normally generates corresponding operating mode and control signal, the operating mode of control system.According to system or work people Member carries out selection operating mode according to the energy state of detected feeder ear, and operating mode includes storing up electricity operating mode, supplies Power mode and system protection pattern.
It is described if exception occur in wherein one or more described feeder ears of system discovery during system is in operating status System disconnects the connection with the end, to protect the safety of system.
Storing up electricity operating mode is:
(a) when the energy state of electricity storage module is charged state:
(a1) when the electric energy at photovoltaic generation end abundance, then no matter whether external power grid power supply is normal, all preferentially by photovoltaic generation It charges to electricity storage module at end;
(a2) when the electric energy at photovoltaic generation end is inadequate and also external power grid power supply it is normal when, then external power grid to electricity storage module into Row charging;
Powering mode is:
(b) when the energy state of electricity storage module powers to the load state:
(b1) it when the electric energy at photovoltaic generation end abundance, is then preferentially powered to load or external power grid by photovoltaic generation end;The step Suddenly further include that if external power grid occur be malfunction, system works in off-network pattern;
(b2) it when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is normal, is then powered to the load by external power grid;
(b3) when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is abnormal, then electricity storage module is supplied to load Electricity;
The instant abnormality warning of the outside prompt system situation of system or switching working mode during system operation It reminds.
The energy state of electricity storage module includes full power state;Charged state:It is set as the 95% of total electricity, is less than the electricity When, electricity storage module receives charging;Low battery state:It is set as the 20% of total electricity, when being less than the electricity, system switch protecting mould Formula is not powered to system, to protect electricity storage module.Wherein, whenever the energy state of electricity storage module reaches a state When, system all can be warned externally.
A kind of photovoltaic energy storage system intelligent power supply of present invention offer, storing up electricity method, can ensure the electric energy at photovoltaic generation end Utilization rate;System makes energy storage and power supply effectively be regulated and controled by simple switching working mode, by the way that system protection is arranged Pattern carries out balanced management and intelligent protection control, achievees the effect that safe and reliable.
Above example be only it is fully open is not intended to limit the present invention, all creation purports based on the present invention, without creating Property labour equivalence techniques feature replacement, should be considered as the application exposure range.

Claims (9)

1. a kind of photovoltaic energy storage system intelligent power supply, storing up electricity method, which is characterized in that mainly include the following steps that:
(1) system detects the energy state of each feeder ear in real time;
(2) system executes corresponding operating mode according to the energy state of each feeder ear.
2. photovoltaic energy storage system intelligent power supply according to claim 1, storing up electricity method, which is characterized in that the feeder ear Including photovoltaic generation end, electricity storage module and external power grid.
3. wanting photovoltaic energy storage system intelligent power supply described in 1, storing up electricity method according to right, which is characterized in that the operating mode Including storing up electricity operating mode, powering mode and system protection pattern.
4. photovoltaic energy storage system intelligent power supply according to claim 3, storing up electricity method, which is characterized in that the storing up electricity work Operation mode is:
(a) when the energy state of electricity storage module is charged state:
(a1) when the electric energy at photovoltaic generation end abundance, then no matter whether external power grid power supply is normal, all preferentially by photovoltaic generation end pair Electricity storage module charges;
(a2) when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is normal, then external power grid fills electricity storage module Electricity.
5. photovoltaic energy storage system intelligent power supply according to claim 3, storing up electricity method, which is characterized in that the power supply mould Formula is:
(b) when the energy state of electricity storage module powers to the load state:
(b1) it when the electric energy at photovoltaic generation end abundance, is then preferentially powered to load or external power grid by photovoltaic generation end;
(b2) it when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is normal, is then powered to the load by external power grid;
(b3) when the electric energy at photovoltaic generation end is inadequate and external power grid power supply is abnormal, then electricity storage module powers to the load.
6. photovoltaic energy storage system intelligent power supply according to claim 3, storing up electricity method, which is characterized in that the system is protected In the process of running for the system, if finding, there is exception, the system to shield pattern in wherein one or more described feeder ears System disconnects the connection with the end.
7. photovoltaic energy storage system intelligent power supply according to claim 1, storing up electricity method, which is characterized in that the Working mould Formula can be automatically selected by system or manual operation Systematic selection.
8. photovoltaic energy storage system intelligent power supply according to claim 1, storing up electricity method, which is characterized in that the system choosing It further includes the outside prompt system operating status of system to select corresponding operating mode, and the outside prompt system situation of system includes i.e. When abnormality warning or switching working mode remind.
9. photovoltaic energy storage system intelligent power supply according to claim 2, storing up electricity method, which is characterized in that the storing up electricity mould The energy state of block includes full power state;Charged state:It is set as the 95% of total electricity, when being less than the electricity, electricity storage module connects It is charged;Low battery state:It is set as the 20% of total electricity, when being less than the electricity, system switch protecting pattern.
CN201810295693.XA 2018-03-30 2018-03-30 A kind of photovoltaic energy storage system intelligent power supply, storing up electricity method Pending CN108616150A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109460422A (en) * 2018-10-15 2019-03-12 珠海格力电器股份有限公司 A kind of method for pushing and device, terminal device and readable storage medium storing program for executing

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CN103151799A (en) * 2013-03-30 2013-06-12 大连宏海新能源发展有限公司 Microgrid power supply system and control method thereof
CN103618372A (en) * 2013-12-11 2014-03-05 厦门大学 Photovoltaic direct current micro-grid system
CN103633726A (en) * 2013-12-02 2014-03-12 河海大学常州校区 Renewable energy source comprehensive power supply system for street lamp
CN103840486A (en) * 2014-03-07 2014-06-04 广东志成冠军集团有限公司 Control method for grid connection of energy storage type photovoltaic power supply system
CN107040034A (en) * 2016-02-03 2017-08-11 珠海格力电器股份有限公司 A kind of photovoltaic energy storage air-conditioning device and control method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110175565A1 (en) * 2010-01-21 2011-07-21 Samsung Sdi Co., Ltd. Energy storage system and method of controlling the same
CN103151799A (en) * 2013-03-30 2013-06-12 大连宏海新能源发展有限公司 Microgrid power supply system and control method thereof
CN103633726A (en) * 2013-12-02 2014-03-12 河海大学常州校区 Renewable energy source comprehensive power supply system for street lamp
CN103618372A (en) * 2013-12-11 2014-03-05 厦门大学 Photovoltaic direct current micro-grid system
CN103840486A (en) * 2014-03-07 2014-06-04 广东志成冠军集团有限公司 Control method for grid connection of energy storage type photovoltaic power supply system
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN109460422A (en) * 2018-10-15 2019-03-12 珠海格力电器股份有限公司 A kind of method for pushing and device, terminal device and readable storage medium storing program for executing

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