CN104319773A - Solar energy and electric supply flexible complementation power supply system - Google Patents
Solar energy and electric supply flexible complementation power supply system Download PDFInfo
- Publication number
- CN104319773A CN104319773A CN201410683067.XA CN201410683067A CN104319773A CN 104319773 A CN104319773 A CN 104319773A CN 201410683067 A CN201410683067 A CN 201410683067A CN 104319773 A CN104319773 A CN 104319773A
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- Prior art keywords
- solar energy
- sine
- power supply
- unidirectional
- solar
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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
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
Abstract
The invention discloses a solar energy and electric supply flexible complementation power supply system. According to the power supply system, sine one-way pulse electric supply with one hundred percent of power factor is formed after full-wave rectification is carried out on electric supply, photo-generated current of a solar cell panel is converted to sine one-way pulse solar energy through a one-way inverter, open-circuit voltage of the solar cell panel is controlled to be higher than that of an electric supply access, the sine one-way pulse electric supply and the sine one-way pulse solar energy are connected in parallel in a common-frequency and inphase mode, and direct current is converted to alternating current through an H bridge to be supplied to loads.
Description
Technical field
The present invention relates to solar energy and the flexible complementary power supply system of civil power.
Background technology
Current existence three kinds of clean energy resource generation modes: two-way exchange is generated electricity by way of merging two or more grid systems, alternately switch generating from net, direct current generates electricity by way of merging two or more grid systems.
Two-way exchange is generated electricity by way of merging two or more grid systems mode, there is following shortcoming:
1. support terminal user is not two-way generates electricity by way of merging two or more grid systems for the power transmission and distribution charge system of current China, and after unnecessary electric energy feed-in electrical network, user needs to pay the more electricity charge on the contrary.
2. national grid does not encourage that terminal use is two-way generates electricity by way of merging two or more grid systems, and is the problem worrying a large amount of two-way generate electricity by way of merging two or more grid systems intrinsic harmonic pollution and isolated island harm.
3. solar energy has intrinsic energy Holiday Effect as clean energy resource generating, and such as power load is minimum the lunchtime, and Energy Maximization, mass energy flows to mains network, and this just needs trunk generating set to have very strong Load Regulation ability.
Alternately switch generation mode for from net, there is following shortcoming:
1. need by system maximum power requirement configuration inverter and jumbo batteries, system cost is large, reliability is low, maintenance cost is high.
2. the energy loss brought of accumulator cell charging and discharging, cannot popularize in an all-round way.
Direct current is generated electricity by way of merging two or more grid systems mode, there is following shortcoming:
1. can only be used for the rectification type input loads such as LED illumination, television set, computer, not possess general applicability, then can be short-circuited as accidentally accessed the inductive load such as air-conditioning, microwave oven, directly burn load.
2. for preventing the problems referred to above from occurring, then need independent laying-out, improve investment, be not easy to the low carbonization transformation of existing building.
3. for meeting power supply administrative regulation (power factor (PF) more than 0.85), and GB GB/T104549(power factor (PF) more than 0.9).Supplementary electric installation need configure expensive PFC device, and cannot simply by directly inputting batteries (single-phase rectifier 0.65, three phase rectifier 0.85) after AC rectification.
Summary of the invention
The object of the present invention is to provide a kind of electric power system, its flexibility that can realize solar-electricity and civil power is complementary.
For achieving the above object, technical scheme of the present invention is the flexible complementary power supply system of a kind of solar energy of design and civil power, civil power is formed the unidirectional pulsation civil power of sine of power factor (PF) 100% by this electric power system after full-wave rectification, and transfer the photogenerated current of solar panel to sinusoidal unidirectional pulsation solar-electricity through unidirectional inverter, control the open circuit voltage of solar panel higher than city's electric pathway, again unidirectional for sine pulsation civil power and the unidirectional pulsation solar-electricity of sine are connected in parallel with frequency homophase, then deliver stream powering load through H bridge direct current.
Preferably, described unidirectional inverter adopts high frequency transformer to isolate high/low pressure side, and solar panel array is in secure side.
Preferably, the efficiency of described unidirectional inverter is more than or equal to 93%.
Preferably, described unidirectional inverter adopts MPPT to control.
Advantage of the present invention and beneficial effect are: provide a kind of electric power system, and its flexibility that can realize solar-electricity and civil power is complementary.
The open circuit voltage controlling solar panel higher than city's electric pathway, then ensure that in power generation process of the present invention, solar-electricity is preferential, and civil power is flexible complementary.This flexible complementary process is determined by the topological structure of circuit, and namely the reliability of system is ensured by the loop law of circuit, instead of the phase is realized by sampling, computing, communication, FEEDBACK CONTROL rearward.The one-way transmission of energy then ensure that unnecessary energy can not feed-in mains network.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
The technical scheme that the present invention specifically implements is:
As shown in Figure 1, a kind of solar energy and the flexible complementary power supply system of civil power, civil power is formed the unidirectional pulsation civil power of sine of power factor (PF) 100% by this electric power system after full-wave rectification, and transfer the photogenerated current of solar panel to sinusoidal unidirectional pulsation solar-electricity through unidirectional inverter, control the open circuit voltage of solar panel higher than city's electric pathway, again unidirectional for sine pulsation civil power and the unidirectional pulsation solar-electricity of sine are connected in parallel with frequency homophase, then deliver stream powering load through H bridge direct current.
Described unidirectional inverter adopts high frequency transformer to isolate high/low pressure side, and solar panel array is in secure side.
The efficiency of described unidirectional inverter is more than or equal to 93%.
Described unidirectional inverter adopts MPPT to control.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. solar energy and the flexible complementary power supply system of civil power, it is characterized in that, civil power is formed the unidirectional pulsation civil power of sine of power factor (PF) 100% by this electric power system after full-wave rectification, and transfer the photogenerated current of solar panel to sinusoidal unidirectional pulsation solar-electricity through unidirectional inverter, control the open circuit voltage of solar panel higher than city's electric pathway, again unidirectional for sine pulsation civil power and the unidirectional pulsation solar-electricity of sine are connected in parallel with frequency homophase, then deliver stream powering load through H bridge direct current.
2. solar energy according to claim 1 and the flexible complementary power supply system of civil power, it is characterized in that, described unidirectional inverter adopts high frequency transformer to isolate high/low pressure side, and solar panel array is in secure side.
3. solar energy according to claim 1 and the flexible complementary power supply system of civil power, it is characterized in that, the efficiency of described unidirectional inverter is more than or equal to 93%.
4. solar energy according to claim 1 and the flexible complementary power supply system of civil power, it is characterized in that, described unidirectional inverter adopts MPPT to control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683067.XA CN104319773A (en) | 2014-11-25 | 2014-11-25 | Solar energy and electric supply flexible complementation power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410683067.XA CN104319773A (en) | 2014-11-25 | 2014-11-25 | Solar energy and electric supply flexible complementation power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104319773A true CN104319773A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410683067.XA Pending CN104319773A (en) | 2014-11-25 | 2014-11-25 | Solar energy and electric supply flexible complementation power supply system |
Country Status (1)
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| CN (1) | CN104319773A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110232441A (en) * | 2019-06-18 | 2019-09-13 | 南京大学 | A kind of stacking-type based on unidirectional systolic arrays is from encoding system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474492A (en) * | 2002-08-08 | 2004-02-11 | 佳能株式会社 | Power converter and power generator |
| CN101958658A (en) * | 2009-07-20 | 2011-01-26 | 通用电气公司 | Be used for system, the method and apparatus of DC power transfer to AC power |
| CN102437568A (en) * | 2012-01-03 | 2012-05-02 | 胡达广 | Efficient and low-cost application method of solar battery |
| CN102882280A (en) * | 2011-07-12 | 2013-01-16 | 上海诚控电子科技有限公司 | Capacitor hybrid energy storage based efficient wind-solar-utility power complementary power supply device |
-
2014
- 2014-11-25 CN CN201410683067.XA patent/CN104319773A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1474492A (en) * | 2002-08-08 | 2004-02-11 | 佳能株式会社 | Power converter and power generator |
| CN101958658A (en) * | 2009-07-20 | 2011-01-26 | 通用电气公司 | Be used for system, the method and apparatus of DC power transfer to AC power |
| CN102882280A (en) * | 2011-07-12 | 2013-01-16 | 上海诚控电子科技有限公司 | Capacitor hybrid energy storage based efficient wind-solar-utility power complementary power supply device |
| CN102437568A (en) * | 2012-01-03 | 2012-05-02 | 胡达广 | Efficient and low-cost application method of solar battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110232441A (en) * | 2019-06-18 | 2019-09-13 | 南京大学 | A kind of stacking-type based on unidirectional systolic arrays is from encoding system and method |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150128 |