CN104362670A - Non-schedulable solar power generation and mains supply complementary system - Google Patents
Non-schedulable solar power generation and mains supply complementary system Download PDFInfo
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- CN104362670A CN104362670A CN201410562757.XA CN201410562757A CN104362670A CN 104362670 A CN104362670 A CN 104362670A CN 201410562757 A CN201410562757 A CN 201410562757A CN 104362670 A CN104362670 A CN 104362670A
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- 238000010248 power generation Methods 0.000 title claims abstract description 28
- 230000000295 complement effect Effects 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 claims description 7
- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 description 9
- 230000008901 benefit Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
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Classifications
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
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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
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a non-schedulable solar power generation and mains supply complementary system. The system comprises a photovoltaic module, a maximum solar power tracker, an inverter, an output buffer, a mains supply module, a solar energy mains supply complementary power supply core controller unit, an amplitude phase detector and an amplitude phase controller, wherein the maximum solar power tracker is used for enabling the working efficiency of the photovoltaic module to be highest, the inverter is used for converting the DC (Direct Current) output of the maximum solar power tracker into power frequency AC (Alternating Current) voltage, the amplitude of the power frequency AC voltage is slightly higher than that of the mains supply, and the output buffer is used for balancing the difference between the power frequency AC voltage output by the inverter and the mains supply voltage and is connected with a load; the mains supply module is used for reducing and accessing the mains supply into the load through the transformer, the amplitude phase detector is connected with the mains supply module to obtain the amplitude and phase of the mains supply, the solar energy mains supply complementary power supply core controller unit is used for processing the amplitude and phase information and then outputting to the amplitude phase controller and the amplitude phase controller is used for generating a control signal used for controlling the inverter. According to the non-schedulable solar power generation and mains supply complementary system provided by the invention, compared with a traditional solar power system which does not need an accumulator, the pollution on the environment can be effectively relieved.
Description
Technical field
The present invention relates to a kind of solar power generation and commercial power complementary system, particularly relate to a kind of non-scheduling formula solar power generation and commercial power complementary system.
Background technology
Along with the quickening of industrialization rhythm, the breach of social energy supply constantly expands, and the problems such as the non-renewable and high pollution of traditional energy are very important.Distributed power generation will be trend, take an early lead in Europe, and achieve good economic benefit and environmental benefit.As the one of distributed power generation, solar power generation possesses the advantages such as pollution-free, inexhaustible, service life of equipment is grown, can power, operating cost is low nearby, solar power generation industry is made to have vast potential for future development, country vigorously supports especially to New Energy Industry, and the continuous progress of technology more there is provided powerful guarantee.
In China, the electricity consumption of a lot of big city is very nervous, also be a no small expense for the annual electricity charge of the user of office building in big city, use solar power generation personal and can save a no small cost with mains hybrid, unnecessary electricity can be flowed to electrical network by vacation.For these little load demand in rural area, by unnecessary electric energy after special circuit centralized renovation, real-time grid-connected transmission of electric energy.While emphasis economic benefit, also contribute for national energy-saving reduces discharging
At present, have following several in the solar power plant product come into operation, the first: by storage battery, electrical power storage is got up, market one's own products, if electrical network can not be sought help from again during self-sufficiency; The second: generated electricity by solar energy equipment, is then sent to electrical network by electric energy, and oneself is not consumed.Initial investment cost is high, multilayer transforms and reduces utilization ratio, later maintenance somewhat expensive because the use of storage battery makes for the first product; It is main economic benefit that the second product does not consider that user uses by oneself.
Although also there is at present solar power generation and the mains hybrid mode without the need to batteries, still there is following shortcoming in it: first can not grid-connectedly carry, and is not suitable for promoting in rural area; When second its solar power generation and civil power dynamic complementation, be according to energy output number give this equipment switch corresponding load, all the other loads are by mains-supplied, such design needs to transform subscriber's line, required somewhat expensive, and not mating of power can produce waste of energy, and do not stop switch load and can produce harmonic effects overall grid.
Summary of the invention
For overcoming the deficiency that above-mentioned prior art exists, one of the present invention object be to provide a kind of non-scheduling formula solar power generation and commercial power complementary system DC inverter is grid-connected, existing energy resource structure can be improved, improve stability of power system, reduce demand charge expenditure, increase income, and do not need storage battery relative to traditional solar power system, effectively can improve the pollution to environment.
For reaching above-mentioned and other object, the present invention proposes a kind of non-scheduling formula solar power generation and commercial power complementary system, at least comprises:
Photovoltaic module, for solar energy is converted to electric energy, its output is connected to solar maximum power tracker;
Solar maximum power tracker, adopt MPPT technology, operating efficiency is the highest all the time to make this photovoltaic module, and its direct current exports and is connected to inverter;
Inverter, exports the power frequency ac voltage be converted to a little more than civil power amplitude by the direct current of this solar maximum power tracker;
Output buffer, for balancing the difference between the power frequency ac voltage of this inverter output and line voltage, the alternating voltage after this output buffer buffering is supplied to load;
Civil power module, accesses this load by civil power through transformer pressure-reducing;
Amplitude phase detectors, connect this civil power module to obtain amplitude and the phase place of civil power, and this amplitude and phase information are sent to solar energy mains hybrid and power core controller unit;
Solar energy mains hybrid is powered core controller unit, outputs control signals to amplitude phase controller after this amplitude and phase information being processed;
Amplitude phase controller, generates this control signal and is used for controlling the control signal that this inverter exports power frequency ac voltage.
Further, this system also comprises output power detector, connects the output of this output buffer and this solar energy mains hybrid and to power core controller unit, to obtain the power output parameter of this system.
Further, this inverter comprises DC/ high-frequency AC circuit, high frequency transformer, AC/DC circuit, DC/ power frequency AC circuit, DC/ high-frequency AC circuit is used for direct current to export to be converted to low-voltage high-frequency alternating current, this low-voltage high-frequency alternating current is converted to stable high voltagehigh frequency alternating current by this high frequency transformer, AC/DC circuit is used for this high-frequency and high-voltage alternating current to be converted to high voltage direct current, and this DC/ power frequency AC circuit is used for this high voltage direct current to be converted to this power frequency ac voltage.
Further, direct current exports and is converted to amplitude power frequency ac voltage a little more than civil power amplitude and in safe controlled range by this inverter.
Compared with prior art, a kind of non-scheduling formula solar power generation of the present invention and commercial power complementary system adopt MPPT technology to photovoltaic module, operating efficiency is the highest all the time to make photovoltaic module, simultaneously by direct for solar power generation inversion again through buffer and the common powering load of civil power, need not accumulators store, save cost, simultaneously, the present invention is the difference between balance inverter output voltage and line voltage by output buffer, family's distribution network is stablized, and utilize the controller unit moment to monitor the amplitude phase place of civil power, adjust the amplitude phase place that inverter exports accordingly, make its phase place identical, amplitude is almost equal, reduce the power consumption on output buffer.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of the present invention's a kind of non-scheduling formula solar power generation and commercial power complementary system;
Fig. 2 is the circuit diagram of inverter in present pre-ferred embodiments.
Embodiment
Below by way of specific instantiation and accompanying drawings embodiments of the present invention, those skilled in the art can understand other advantage of the present invention and effect easily by content disclosed in the present specification.The present invention is also implemented by other different instantiation or is applied, and the every details in this specification also can based on different viewpoints and application, carries out various modification and change not deviating under spirit of the present invention.
Fig. 1 is the system construction drawing of the present invention's a kind of non-scheduling formula solar power generation and commercial power complementary system.As shown in Figure 1, a kind of non-scheduling formula solar power generation of the present invention and commercial power complementary system, comprise: photovoltaic module 10, solar maximum power tracker 20, inverter 30, output buffer 40, amplitude phase detectors 50, solar energy mains hybrid are powered core controller unit 60, amplitude phase controller 70, output power detector 80 and load 90 and civil power 100, as shown in Figure 1.
Photovoltaic module 10 is for being converted to electric energy by solar energy, its output is connected to solar maximum power tracker 20, solar maximum power tracker 20 adopts MPPT technology, operating efficiency is the highest all the time to make photovoltaic module 10, its direct current DC exports and is connected to inverter 30 direct current DC to be converted to amplitude industrial frequency AC AC voltage of (about+1 ~ 3%) a little more than civil power amplitude (about 220V) and in safe controlled range, this industrial frequency AC AC voltage is connected to output buffer 40, output buffer 40 is made up of a bulky capacitor and a small resistor, for balancing the difference between the industrial frequency AC AC voltage of inverter 30 output and line voltage, family's distribution network is stablized, interchange AC voltage after output buffer 40 cushions is connected to load 90 for user, civil power 100 is generally through transformer pressure-reducing access load 90, civil power is connected to amplitude phase detectors 50 to obtain amplitude and the phase place of civil power simultaneously, this amplitude and phase information are transferred into solar energy mains hybrid and power core controller unit 60, output control signals to amplitude phase controller 70 after treatment, this control signal generates and is used for the control signal of amplitude a little more than the industrial frequency AC AC voltage of civil power amplitude that control inverter 30 exports the same homophase frequently with civil power by amplitude phase controller 70, the Buffer output of output buffer 40 is connected to output power detector 80 to obtain the power output parameter of non-scheduling formula solar power generation and commercial power complementary system for user simultaneously.
Fig. 2 is the circuit diagram of inverter in present pre-ferred embodiments.As shown in Figure 2, inverter 30 generally comprises DC/ high-frequency AC circuit 301, high frequency transformer 302, AC/DC circuit 303, DC/ power frequency AC circuit 304, DC/ high-frequency AC circuit 301 is converted to low-voltage high-frequency AC as 100Kz ~ 1MHz for the direct current DC exported by photovoltaic generating system, low-voltage high-frequency AC is converted to stable high voltagehigh frequency AC by high frequency transformer 302, AC/DC circuit 303 is for being converted to high voltage direct current DC by high-frequency and high-voltage AC, and DC/ power frequency AC circuit 304 is for being converted to power frequency AC voltage by high voltage direct current DC.
Visible, solar photovoltaic assembly can be operated near maximum power through solar maximum power tracker in FIG, improves efficiency of energy utilization.Then direct current is converted into a little more than 220V and commercial power in safe controlled range through inverter (inverter operation principle as shown in Figure 2), then through output buffer and civil power powering load simultaneously, and the voltage of self power generation is a little more than civil power, ensure that the preferential use of the electricity that the sun sends thus, and when electricity has residue, unnecessary electricity is delivered to electrical network.The amplitude of the civil power detected and phase place are sent to solar energy mains hybrid and power core controller unit by amplitude phase detectors, then solar energy mains hybrid core controller unit of powering sends order to amplitude phase controller, and amplitude phase controller can adjust according to instruction voltage and the phase place that inverter exports electric energy.Output power detector is responsible for the power output detecting inverter, is equivalent to ammeter, can calculates energy output for user and Utilities Electric Co.'s collective reference.
Tool of the present invention has the following advantages:
Non-scheduling formula solar power generation of the present invention and commercial power complementary system adopt MPPT technology to photovoltaic module, and operating efficiency is the highest all the time to make photovoltaic module.
Non-scheduling formula solar power generation of the present invention and the direct inversion of commercial power complementary system, need not accumulators store again through buffer and the common powering load of civil power.Output buffer is made up of a bulky capacitor and small resistor, for balancing the difference between inverter output voltage and line voltage, family's distribution network is stablized.
The amplitude phase place of the controller unit moment monitoring civil power in the present invention, adjust the amplitude phase place that inverter exports accordingly, make its phase place identical, amplitude is almost equal, reduces the power consumption on output buffer.
Controller unit also detects the output voltage and electric current that export buffering, thus the power output of real-time monitoring system, internal power consumption, generate electricity the number of degrees, amount to and save the data such as electricity price.For reference.
The present invention can improve existing energy resource structure, improves stability of power system; Reduce demand charge expenditure, increase income, and do not need storage battery relative to traditional solar power system, effectively can improve the pollution to environment.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any those skilled in the art all without prejudice under spirit of the present invention and category, can carry out modifying to above-described embodiment and change.Therefore, the scope of the present invention, should listed by claims.
Claims (4)
1. non-scheduling formula solar power generation and a commercial power complementary system, at least comprises:
Photovoltaic module, for solar energy is converted to electric energy, its output is connected to solar maximum power tracker;
Solar maximum power tracker, adopt MPPT technology, operating efficiency is the highest all the time to make this photovoltaic module, and its direct current exports and is connected to inverter;
Inverter, exports the power frequency ac voltage be converted to a little more than civil power amplitude by the direct current of this solar maximum power tracker;
Output buffer, for balancing the difference between the power frequency ac voltage of this inverter output and line voltage, the alternating voltage after this output buffer buffering is supplied to load;
Civil power module, accesses this load by civil power through transformer pressure-reducing;
Amplitude phase detectors, connect this civil power module to obtain amplitude and the phase place of civil power, and this amplitude and phase information are sent to solar energy mains hybrid and power core controller unit;
Solar energy mains hybrid is powered core controller unit, outputs control signals to amplitude phase controller after this amplitude and phase information being processed;
Amplitude phase controller, generates this control signal and is used for controlling the control signal that this inverter exports power frequency ac voltage.
2. a kind of non-scheduling formula solar power generation as claimed in claim 1 and commercial power complementary system, it is characterized in that: this system also comprises output power detector, connect the output of this output buffer and this solar energy mains hybrid to power core controller unit, to obtain the power output parameter of this system.
3. a kind of non-scheduling formula solar power generation as claimed in claim 2 and commercial power complementary system, it is characterized in that: this inverter comprises DC/ high-frequency AC circuit, high frequency transformer, AC/DC circuit, DC/ power frequency AC circuit, DC/ high-frequency AC circuit is used for direct current to export to be converted to low-voltage high-frequency alternating current, this low-voltage high-frequency alternating current is converted to stable high voltagehigh frequency alternating current by this high frequency transformer, AC/DC circuit is used for this high-frequency and high-voltage alternating current to be converted to high voltage direct current, and this DC/ power frequency AC circuit is used for this high voltage direct current to be converted to this power frequency ac voltage.
4. a kind of non-scheduling formula solar power generation as claimed in claim 3 and commercial power complementary system, is characterized in that: direct current exports and is converted to the power frequency ac voltage of amplitude a little more than civil power amplitude and in safe controlled range by this inverter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562757.XA CN104362670A (en) | 2014-10-21 | 2014-10-21 | Non-schedulable solar power generation and mains supply complementary system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410562757.XA CN104362670A (en) | 2014-10-21 | 2014-10-21 | Non-schedulable solar power generation and mains supply complementary system |
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| CN104362670A true CN104362670A (en) | 2015-02-18 |
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| CN201410562757.XA Pending CN104362670A (en) | 2014-10-21 | 2014-10-21 | Non-schedulable solar power generation and mains supply complementary system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107591876A (en) * | 2016-07-07 | 2018-01-16 | 上海博恩世通光电股份有限公司 | The electric supply installation and method of supplying power to of solar energy mains hybrid |
| CN108028533A (en) * | 2015-07-14 | 2018-05-11 | 迪吉罗格科技有限公司 | Hybrid solar power control system |
| CN109193789A (en) * | 2018-10-30 | 2019-01-11 | 河南许芯变频技术研究院有限公司 | A kind of inverter for photovoltaic power generation |
| CN109494860A (en) * | 2018-10-29 | 2019-03-19 | 佛山市上驰电源科技有限公司 | The solar grid-connected off-network energy storage three-in-one integral machine of Line interaction and control method |
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| CN102055348A (en) * | 2010-12-24 | 2011-05-11 | 东南大学 | Voltage reducing power electronic transformer for distribution network |
| WO2013107782A2 (en) * | 2012-01-17 | 2013-07-25 | Infineon Technologies Austria Ag | Power converter circuit, power supply system and method |
| US20140175888A1 (en) * | 2012-12-21 | 2014-06-26 | Infineon Technologies Austria Ag | Power Converter Circuit with AC Output |
-
2014
- 2014-10-21 CN CN201410562757.XA patent/CN104362670A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102055348A (en) * | 2010-12-24 | 2011-05-11 | 东南大学 | Voltage reducing power electronic transformer for distribution network |
| WO2013107782A2 (en) * | 2012-01-17 | 2013-07-25 | Infineon Technologies Austria Ag | Power converter circuit, power supply system and method |
| US20140175888A1 (en) * | 2012-12-21 | 2014-06-26 | Infineon Technologies Austria Ag | Power Converter Circuit with AC Output |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108028533A (en) * | 2015-07-14 | 2018-05-11 | 迪吉罗格科技有限公司 | Hybrid solar power control system |
| CN108028533B (en) * | 2015-07-14 | 2022-01-11 | 迪吉罗格科技有限公司 | Hybrid solar power supply control system |
| CN107591876A (en) * | 2016-07-07 | 2018-01-16 | 上海博恩世通光电股份有限公司 | The electric supply installation and method of supplying power to of solar energy mains hybrid |
| CN109494860A (en) * | 2018-10-29 | 2019-03-19 | 佛山市上驰电源科技有限公司 | The solar grid-connected off-network energy storage three-in-one integral machine of Line interaction and control method |
| CN109193789A (en) * | 2018-10-30 | 2019-01-11 | 河南许芯变频技术研究院有限公司 | A kind of inverter for photovoltaic power generation |
| CN109193789B (en) * | 2018-10-30 | 2021-12-14 | 泓芯泰业科技(北京)有限公司 | Inverter for photovoltaic power generation |
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Application publication date: 20150218 |