CN104113133A - Intelligent photovoltaic off-grid inverter system and power utilization control method thereof - Google Patents
Intelligent photovoltaic off-grid inverter system and power utilization control method thereof Download PDFInfo
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- CN104113133A CN104113133A CN201410308017.3A CN201410308017A CN104113133A CN 104113133 A CN104113133 A CN 104113133A CN 201410308017 A CN201410308017 A CN 201410308017A CN 104113133 A CN104113133 A CN 104113133A
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- 239000003990 capacitor Substances 0.000 claims description 5
- 239000013589 supplement Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 101150005017 STS2 gene Proteins 0.000 description 3
- 101150006480 Ubash3a gene Proteins 0.000 description 3
- 102100040337 Ubiquitin-associated and SH3 domain-containing protein A Human genes 0.000 description 3
- 101100313728 Vitis vinifera VINST1 gene Proteins 0.000 description 3
- 101150067286 STS1 gene Proteins 0.000 description 2
- 101100028967 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) PDR5 gene Proteins 0.000 description 2
- 101150027289 Ubash3b gene Proteins 0.000 description 2
- 102100040338 Ubiquitin-associated and SH3 domain-containing protein B Human genes 0.000 description 2
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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
- 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
- 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
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Abstract
The invention relates to the technical field of photovoltaic inverters, and specifically discloses an intelligent photovoltaic off-grid inverter system and a power utilization control method thereof. The intelligent photovoltaic off-grid inverter system includes an inverter, a rectifier, a solar energy controller and a storage battery, an input end of the rectifier is connected with an alternating current power supply, an output end is connected with an input end of the inverter, an output end of the inverter is connected with a load, an input end of the solar energy controller is connected with a solar cell panel, and an output end is connected with the storage battery and the inverter. The control method includes switching of a staggering peak power utilization mode, an AC charging-off mode and a general mode according to requirements of users, and uninterruptible power supply for the users can be guaranteed when commercial power is abnormal. The intelligent photovoltaic off-grid inverter system and the power utilization control method thereof in the invention have the advantages of uninterrupted power supply guarantee, efficient use of electric energy, reduced power utilization cost of users, and convenient use.
Description
Technical field
The present invention relates to photovoltaic DC-to-AC converter technical field, relate in particular to a kind of Intelligent photovoltaic from net inverter system and power consumption control method thereof.
Background technology
Existing most of photovoltaic off-grid inverters do not have too many intelligent control, are all to do as a kind of mode of uninterrupted power supply, do not stand in economy and the practicality of in user's position, considering user.And a lot of countries are in the different time periods, and the standard of the charge of electricity using is also different, and peak times of power consumption, the electric lighting bill is heavy, and the cost that user bears increases.Current photovoltaic off-grid inverter can only be served as the uninterrupted power supply that ensures power supply, but can not switch the different power modes of using according to user's request, reduces its electric cost.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of Intelligent photovoltaic from net inverter system, its can be in different time sections according to user's request with different mode operations, ensure not power-off, electric energy high efficiency is used, and reduces user power utilization cost, easy to use.
The present invention also provides a kind of power consumption control method.
For achieving the above object, the technical solution adopted in the present invention is:
A kind of Intelligent photovoltaic is from net inverter system, it comprises inverter, rectifier, controller for solar and storage battery, described rectifier input AC power connects, output is connected with the input of described inverter, described inverter output end is connected with described load, described controller for solar input is connected with solar panel, and output is connected with storage battery and inverter.
To being further improved to of technique scheme, the output of described inverter connects a transformer, and one end of described transformer connects Static Transfer Switch, and one end of described Static Transfer Switch connects load, other end interconnection network intelligence switch.
To being further improved to of technique scheme, the output of described controller for solar connects the first current transformer, and the first current transformer connects the input of inverter.
To being further improved to of technique scheme, the output of described storage battery connects soft module of direct current, and the output of soft module of direct current connects the second current transformer, and the second current transformer connects the input of described inverter.
To being further improved to of technique scheme, the output of described rectifier and the each capacitor in parallel of the input of described inverter.
A kind of Intelligent photovoltaic is from the power consumption control method of net inverter system, it comprises: the pattern of using electricity in off-peak hours: the voltage that gathers controller for solar and rectifier output, when the output voltage of controller for solar is during higher than the output voltage of rectifier, Intelligent photovoltaic from the control of net inverter system by solar panel powering load together with storage battery; Gather the output voltage of storage battery simultaneously, in the time collecting storage battery and occur low pressure, open rectifier, by solar panel powering load together with rectifier; AC charging pass pattern: in the time of storage battery low-voltage, Intelligent photovoltaic is from the control of net inverter system by solar panel powering load together with rectifier, and rectifier does not charge the battery; Normal mode: by solar panel powering load together with rectifier, charge the battery together simultaneously; Civil power abnormal patterns: solar panel is powering load together with storage battery; All abnormal patterns of civil power and solar energy: storage battery is by inverter powering load.
Preferably, described in use electricity in off-peak hours under pattern, as far as possible without the energy of electrical network, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, and unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel preferentially meets load to inverter power supply, and inadequate is supplemented by storage battery, and rectifier is in stand-by state.
Preferably, under the pattern of described AC charging pass, rectifier does not charge a battery, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, and unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel preferentially meets load to inverter power supply, and inadequate is supplemented by rectifier, by the output current of the second current transformer control rectifier, rectifier only supplements inadequate energy, does not charge the battery.
Preferably, under described normal mode, preferentially ensure batteries to store energy, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, and unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel powering load charging a battery together with rectifier.
Intelligent photovoltaic of the present invention is from net inverter system and power consumption control method thereof, and its beneficial effect is:
Design the photovoltaic off-grid inverter system of a set of intelligence, in different operational modes automatic switchover, do not used the energy of electrical network in the different electricity consumption time periods in the peak electricity consumption period as far as possible, greatly reduced user's electric cost; The energy that uses efficiently solar panel, has reduced the waste of the energy simultaneously, has reached the object of energy savings.In the time of city's electrical anomaly, can ensure not power-off of user, meet user's need for electricity, ensure to produce and carry out continuously.
Brief description of the drawings
Fig. 1 is the system topological figure of embodiment of the present invention Intelligent photovoltaic from net inverter system;
Fig. 2 is the schematic block circuit diagram of embodiment of the present invention Intelligent photovoltaic from net inverter system;
Fig. 3 is the flow chart of embodiment of the present invention Intelligent photovoltaic from net inverter system power consumption control method;
To be embodiment of the present invention Intelligent photovoltaic flow to one of schematic diagram from the electric weight of use electricity in off-peak hours in net inverter system power consumption control method pattern, AC charging pass pattern and normal mode to Fig. 4;
To be embodiment of the present invention Intelligent photovoltaic flow to two of schematic diagram from the electric weight of the pattern of using electricity in off-peak hours in net inverter system power consumption control method to Fig. 5;
To be embodiment of the present invention Intelligent photovoltaic flow to two of schematic diagram from the electric weight of AC charging pass pattern in net inverter system power consumption control method to Fig. 6;
To be embodiment of the present invention Intelligent photovoltaic flow to two of schematic diagram from the electric weight of normal mode in net inverter system power consumption control method to Fig. 7;
Fig. 8 be embodiment of the present invention Intelligent photovoltaic from civil power in net inverter system power consumption control method and solar energy all the electric weight of abnormal patterns flow to schematic diagram.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, the present invention is described in further detail.
Embodiment:
Please refer to Fig. 1,2, Intelligent photovoltaic of the present invention is from net inverter system, it comprises inverter, rectifier, controller for solar MPPT and storage battery BAT, also comprise Static Transfer Switch STS, transformer TRANS and network intelligence switch BYPASS(BYP), wherein, Static Transfer Switch STS comprises STS1 and the STS2 of changeable use.
Rectifier input is connected with AC power (electrical network), rectifier output end is connected with the input of inverter, the output shunt capacitor C1 of rectifier, an input capacitor C2 in parallel of inverter, the output connection transformer TRANS of inverter, after an output capacitor C3 in parallel of transformer TRANS, be connected with Static Transfer Switch STS2, Static Transfer Switch STS2 is connected with load LOAD, and Static Transfer Switch STS1 is connected with network intelligence switch BYP.
Controller for solar MPPT input is connected with solar panel, and controller for solar MPPT output connects input and the storage battery that the first Current Transmit 1, the first Current Transmit 1 output connects inverter.The output of storage battery connects the input of soft module of direct current, and the output of soft module of direct current connects the input of the second Current Transmit 2, and the output of the second Current Transmit 2 connects in the input of inverter.Because the electricity symbol of rectifier, inverter and transformer is known, therefore show with electricity symbol table in the drawings.
With reference to Fig. 3, use above-mentioned Intelligent photovoltaic from the power consumption control method of net inverter system to be:
User can be set to following each pattern in different time sections, according to automatically changing between each pattern the running time of setting.
The pattern of using electricity in off-peak hours: the voltage that gathers controller for solar MPPT and rectifier output, when the output voltage of controller for solar MPPT is during higher than the output voltage of rectifier, Intelligent photovoltaic powers to together with storage battery BAT by solar panel PV from the control of net inverter system load LOAD; Gather the output voltage of storage battery BAT simultaneously, in the time collecting storage battery BAT and occur low pressure, open rectifier, power to together with rectifier by solar panel PV load LOAD.
AC charging pass pattern: in the time of storage battery BAT low pressure, Intelligent photovoltaic powers to together with rectifier by solar panel PV from the control of net inverter system load LOAD, not accumulators BAT charging of rectifier.
Normal mode: power to together with rectifier by solar panel PV load LOAD, accumulators BAT charging together simultaneously.
Civil power abnormal patterns: solar panel PV is powering load together with storage battery BAT.
All abnormal patterns of civil power and solar energy: storage battery BAT powers to load LOAD by inverter.
Specifically: under the pattern of using electricity in off-peak hours, reach as far as possible the effect without the energy of electrical network.With reference to Fig. 4,, in the time that the power output of controller for solar MPPT is greater than load LOAD power demand, solar panel PV preferentially meets load LOAD to inverter power supply, unnecessary power accumulators BAT charging, and rectifier is in stand-by state.Now solar panel PV power=bearing power+charge in batteries power.With reference to Fig. 5, in the time that the power output of controller for solar MPPT is less than load LOAD power demand, solar panel PV preferentially meets load LOAD to inverter power supply, and inadequate is supplemented by storage battery BAT, and rectifier is in stand-by state.Now solar panel PV power+battery discharging power=bearing power.
Under the pattern of AC charging pass, not accumulators BAT charging of rectifier.With reference to Fig. 4,, in the time that the power output of controller for solar MPPT is greater than load LOAD power demand, solar panel PV preferentially meets load LOAD to inverter power supply, unnecessary power accumulators BAT charging, and rectifier is in stand-by state; Now solar panel PV power=bearing power+charge in batteries power.With reference to Fig. 6, in the time that the power output of controller for solar MPPT is less than load LOAD power demand, solar panel PV preferentially meets load LOAD to inverter power supply, inadequate is supplemented by rectifier, control the output current of rectifier by the second Current Transmit 2, rectifier only supplements inadequate energy, not accumulators BAT charging.Now solar panel PV power+rectifier power output=bearing power
Under normal mode, preferentially ensure storage battery BAT energy storage.With reference to Fig. 4,, in the time that the power output of controller for solar MPPT is greater than load LOAD power demand, solar panel PV preferentially meets load LOAD to inverter power supply, unnecessary power accumulators BAT charging, and rectifier is in stand-by state; Now solar panel PV power=bearing power+charge in batteries power.With reference to Fig. 7, in the time that the power output of controller for solar MPPT is less than load LOAD power demand, solar panel PV is powering load accumulators BAT charging together with rectifier, now solar panel PV power+rectifier power output=bearing power+battery discharging power.
Civil power abnormal patterns: solar panel PV gives load LOAD power supply together with storage battery BAT.With reference to Fig. 5, when the energy of solar energy is less than load LOAD, solar panel PV gives load LOAD power supply, now solar panel PV power+battery discharging power=bearing power together with storage battery BAT.
All abnormal patterns of civil power and solar energy: with reference to Fig. 8, storage battery BAT powers to load LOAD by inverter, now battery discharging power=bearing power.
By with upper type, user arranges different patterns in different time sections, can reduce electric cost, improves power consumption efficiency.
When whole system is during in photovoltaic UPS pattern, power consumption control method is the same, comprises the pattern of using electricity in off-peak hours, AC charging pass pattern, normal mode, civil power abnormal patterns and civil power and all abnormal patterns of solar energy.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. an Intelligent photovoltaic is from net inverter system, it is characterized in that: comprise inverter, rectifier, controller for solar and storage battery, described rectifier input is connected with AC power, output is connected with the input of described inverter, described inverter output end is connected with described load, described controller for solar input is connected with solar panel, and output is connected with storage battery and inverter.
According to claim 1 Intelligent photovoltaic from net inverter system, it is characterized in that: the output of described inverter connects a transformer, one end of described transformer connects Static Transfer Switch, and one end of described Static Transfer Switch connects load, other end interconnection network intelligence switch.
3. Intelligent photovoltaic, from net inverter system, is characterized in that according to claim 1: the output of described controller for solar connects the first current transformer, and the first current transformer connects the input of inverter.
According to claim 1 Intelligent photovoltaic from net inverter system, it is characterized in that: the output of described storage battery connects soft module of direct current, the output of soft module of direct current connects the second current transformer, and the second current transformer connects the input of described inverter.
5. Intelligent photovoltaic, from net inverter system, is characterized in that according to claim 1: the output of described rectifier and the each capacitor in parallel of the input of described inverter.
6. Intelligent photovoltaic, from a power consumption control method for net inverter system, is characterized in that:
The pattern of using electricity in off-peak hours: the voltage that gathers controller for solar and rectifier output, when the output voltage of controller for solar is during higher than the output voltage of rectifier, Intelligent photovoltaic from the control of net inverter system by solar panel powering load together with storage battery; Gather the output voltage of storage battery simultaneously, in the time collecting storage battery and occur low pressure, open rectifier, by solar panel powering load together with rectifier;
AC charging pass pattern: in the time of storage battery low-voltage, Intelligent photovoltaic is from the control of net inverter system by solar panel powering load together with rectifier, and rectifier does not charge the battery;
Normal mode: by solar panel powering load together with rectifier, charge the battery together simultaneously;
Civil power abnormal patterns: solar panel is powering load together with storage battery;
All abnormal patterns of civil power and solar energy: storage battery is by inverter powering load.
According to claim 6 Intelligent photovoltaic from net inverter system power consumption control method, it is characterized in that: described in use electricity in off-peak hours under pattern, try one's best without the energy of electrical network, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel preferentially meets load to inverter power supply, and inadequate is supplemented by storage battery, and rectifier is in stand-by state.
According to claim 6 Intelligent photovoltaic from net inverter system power consumption control method, it is characterized in that: under the pattern of described AC charging pass, rectifier does not charge a battery, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel preferentially meets load to inverter power supply, and inadequate is supplemented by rectifier, by the output current of the second current transformer control rectifier, rectifier only supplements inadequate energy, does not charge the battery.
According to claim 6 Intelligent photovoltaic from net inverter system power consumption control method, it is characterized in that: under described normal mode, the preferential batteries to store energy that ensures, in the time that the power output of controller for solar is greater than load power demand, solar panel preferentially meets load to inverter power supply, unnecessary power charges a battery, and rectifier is in stand-by state; In the time that the power output of controller for solar is less than load power demand, solar panel powering load charging a battery together with rectifier.
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| CN106410933A (en) * | 2015-07-28 | 2017-02-15 | 广东爱迪贝克软件科技有限公司 | Photovoltaic off-grid inverter control method and control device |
| CN107579590A (en) * | 2016-07-05 | 2018-01-12 | 伊顿飞瑞慕品股份有限公司 | Off-grid uninterrupted power supply |
| CN109030968A (en) * | 2017-06-09 | 2018-12-18 | 中国电力科学研究院 | A kind of energy-storage system and off-network test macro and method |
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| CN109960307A (en) * | 2019-03-01 | 2019-07-02 | 湖南诺诚光伏能源有限公司 | A kind of photovoltaic off-grid inverter MPPT Auto-disturbance-rejection Control |
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| CN106410933A (en) * | 2015-07-28 | 2017-02-15 | 广东爱迪贝克软件科技有限公司 | Photovoltaic off-grid inverter control method and control device |
| CN106410933B (en) * | 2015-07-28 | 2019-04-26 | 广东爱迪贝克软件科技有限公司 | Photovoltaic off-grid inverter control method and control device |
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| CN107579590A (en) * | 2016-07-05 | 2018-01-12 | 伊顿飞瑞慕品股份有限公司 | Off-grid uninterrupted power supply |
| CN109030968A (en) * | 2017-06-09 | 2018-12-18 | 中国电力科学研究院 | A kind of energy-storage system and off-network test macro and method |
| CN109030968B (en) * | 2017-06-09 | 2021-02-23 | 中国电力科学研究院有限公司 | An energy storage system on-grid test system and method |
| CN109960307A (en) * | 2019-03-01 | 2019-07-02 | 湖南诺诚光伏能源有限公司 | A kind of photovoltaic off-grid inverter MPPT Auto-disturbance-rejection Control |
| CN109901659A (en) * | 2019-03-01 | 2019-06-18 | 湖南诺诚光伏能源有限公司 | A kind of photovoltaic off-grid inverter MPPT control system |
| CN112688385A (en) * | 2020-12-15 | 2021-04-20 | 深圳市比比赞科技有限公司 | Off-network load wireless intelligent control method and system |
| CN113193645A (en) * | 2021-04-22 | 2021-07-30 | 四川荣创新能动力系统有限公司 | Control method of hydrogen fuel cell emergency power supply system |
| CN113193645B (en) * | 2021-04-22 | 2022-08-09 | 四川荣创新能动力系统有限公司 | Control method of hydrogen fuel cell emergency power supply system |
| CN114123519A (en) * | 2021-10-21 | 2022-03-01 | 国网山东省电力公司滨州市滨城区供电公司 | Intelligent energy storage power station system |
| WO2025030928A1 (en) * | 2023-08-04 | 2025-02-13 | 浙江亘远科技有限公司 | Solar energy booster |
| CN119561225A (en) * | 2025-02-07 | 2025-03-04 | 江苏汉邦智能系统集成有限公司 | A multi-channel power supply switching power collection system |
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