CN104810913A - Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device - Google Patents
Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device Download PDFInfo
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- CN104810913A CN104810913A CN201510267924.2A CN201510267924A CN104810913A CN 104810913 A CN104810913 A CN 104810913A CN 201510267924 A CN201510267924 A CN 201510267924A CN 104810913 A CN104810913 A CN 104810913A
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- output
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- power
- water pump
- power generation
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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
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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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
Abstract
The invention provides a photovoltaic power generation device based on commercial power compensation. A photovoltaic array of a solar power supply assembly is connected with a combiner box, in addition, a direct current power supply is output, and the output voltage is Ux; a commercial power compensation assembly comprises an AC-DC (alternating current to direct current) converter connected with an urban electric network, in addition, the direct current power supply is output, and the output voltage is Uy; the output of the solar power supply assembly is connected in parallel with the output of the commercial power compensation assembly, and in addition, the Uy is smaller than the Ux. According to the circuit features of the photovoltaic generation device based on commercial power compensation, the final output of the device can actively select the output of the solar power supply assembly, when the output power of the solar power supply assembly cannot reach the work power of a load, the commercial power compensation assembly is used for supplementation, and finally, the output power of the power generation device reaches the work power of the load. The invention also provides a water pump system. The photovoltaic power generation device based on commercial power compensation is used for supplying electricity to the water pump. The water pump system can use the power generation device for supplying electricity to the water pump.
Description
Technical field
The present invention relates to a kind of photovoltaic power generation apparatus, particularly a kind of photovoltaic power generation apparatus based on city's electronic compensating.
The invention still further relates to a kind of water pump system, particularly a kind of photovoltaic based on city's electronic compensating drives water pump system.
Background technology
Society production development scale grows stronger day by day, to the demand of the energy also in continuous growth.The total amount of traditional three large energy oil, coal and natural gases is limited, is about to face exhaustion, also can causes environmental pollution and greenhouse effect simultaneously.By contrast, solar energy is as a kind of renewable resource, because it is pollution-free, widely distributed and amount of radiation is high, is known as one of optimal new forms of energy by international community.Photovoltaic generation is then one of optimal path of current efficiency utilization solar energy, further investigation photovoltaic power generation technology, and improving generating efficiency has great theory and realistic meaning.
Traditional photovoltaic DC-to-AC converter is generally made up of solar-energy photo-voltaic cell, energy-storage travelling wave tube, controller, transformer, inverter circuit and filter circuit etc.The energy source of photovoltaic cell is in the sun, and differs in illumination condition various places, is subject to the impact of cloud layer and earth rotation simultaneously, is always in the state of change.In order to ensure that the extraneous factors such as illumination can not affect the normal operation of load, certainly will certain measure to be taked to stablize the power output of photovoltaic cell.
At present, the mode overcoming the problems referred to above has two kinds: 1, store solar-energy photo-voltaic cell electricity by increasing battery pack, but this mode needs to increase energy-storage travelling wave tube in addition, increase input cost, and after energy storage exhausts again, also need to compensate load, otherwise affect the normal work of load;
2, by civil power, solar battery group is compensated, existing compensation mechanism is that the power of the power produced and load by comparing solar-energy photo-voltaic cell compares, if when the power produced of solar-energy photo-voltaic cell is less than the power of load needs, civil power compensating controller can directly select civil power to export load, if when the power produced of solar-energy photo-voltaic cell is greater than the power of load needs, civil power compensating controller can directly select solar energy to export load, civil power compensating controller is utilized to select solar energy or civil power, but the cost of civil power compensating controller is very high, if when illumination condition is bad, the output of solar power generation is unstable, civil power compensating controller is easily caused frequently to switch, civil power compensating controller is produced and damages.
Summary of the invention
Technical problem to be solved by this invention be to provide a kind of structure simple, can self-compensating the photovoltaic power generation apparatus based on city's electronic compensating.
Technical problem to be solved by this invention is the water pump system also providing a kind of utilization to operate based on the photovoltaic power generation apparatus of city's electronic compensating.
For solving the problems of the technologies described above, the invention provides a kind of photovoltaic power generation apparatus based on city's electronic compensating, comprising solar powered assembly and civil power compensation assembly;
Solar powered assembly comprises photovoltaic array and header box, and photovoltaic array is connected with header box, the DC power supply of solar powered assembly stable output, and its output voltage is Ux;
Civil power compensation assembly at least comprises the AC-DC converter be connected with urban distribution network, the DC power supply of civil power compensation assembly stable output, and its output voltage is Uy;
The output of solar powered assembly is in parallel with between the output of civil power compensation assembly, and Uy < Ux.
After adopting such structure, when solar powered assembly generating, civil power compensation assembly can carry out effectively compensating it;
Uy < Ux, according to the circuit characteristic originally based on the photovoltaic power generation apparatus of city's electronic compensating, the final output of this device initiatively can select the output of solar powered assembly, when the power of the output of solar powered assembly does not reach the operating power of load, recycling civil power compensation assembly supplements it, and this power output based on the photovoltaic power generation apparatus of city's electronic compensating final reaches loaded work piece power.
Difference with the prior art is: this can according to the power generation situation of photovoltaic array based on the photovoltaic power generation apparatus of city's electronic compensating, from main separation the need of city's electronic compensating, if do not need when needing city's electronic compensating to stop solar powered assembly to generate electricity, do not need other energy storage device, utilize the electric energy that solar powered assembly produces to greatest extent yet.
In order to better understand the technology contents of the application, below by this based on photovoltaic power generation apparatus of city's electronic compensating referred to as this device.
The civil power compensation assembly of this device also comprises pressure regulating box, and urban distribution network inputs AC-DC converter by pressure regulating box; After adopting such structure, the alternating voltage of urban distribution network is fixing, after pressure regulating box, the voltage of urban distribution network can be regulated to be a predetermined value.
As the preferred version of this device, (Uy+20 volt)≤Ux≤(Uy+60 volt), the voltage of solar powered assembly is reasonable value.
Connect with inverter after in parallel between the output of the solar powered assembly of this device and the output of civil power compensation assembly; After adopting such structure, inverter makes DC power supply change alternating current into, makes the alternating current of the final stable output of this device.
For solving the problems of the technologies described above, present invention also offers a kind of water pump system, comprising water pump and Blast Furnace Top Gas Recovery Turbine Unit (TRT), utilize the above-mentioned photovoltaic power generation apparatus based on city's electronic compensating to power to water pump.
After adopting such structure, the stable electric power that this water pump system can utilize the photovoltaic power generation apparatus based on city's electronic compensating to produce water pump is powered.
Accompanying drawing explanation
Fig. 1 is the topological structure block diagram of this water pump system.
Fig. 2 is the power balance theory figure of this water pump system.
Embodiment
As shown in Fig. 1 to 2
This device comprises solar powered assembly and civil power compensation assembly.
Solar powered assembly comprises photovoltaic array and header box, photovoltaic array is connected with header box, solar energy is converted to unstable direct current (namely unstable DC) by photovoltaic array, photovoltaic array connects header box, unstable DC obtains stable DC after header box, and then the DC power supply of solar powered assembly stable output, its output voltage is Ux, output current is Ix, power output is Wx, and the output circuit of solar powered assembly is provided with counnter attack power transmission device;
Civil power compensation assembly comprises pressure regulating box, AC-DC converter, pressure regulating box is connected with AC-DC converter, urban distribution network is through pressure regulating box stable output alternating current (namely stable AC), stable AC inputs AC-DC converter, become stable DC, and then the DC power supply of civil power compensation assembly stable output, its output voltage is Uy, output current is Iy, power output is Wy, and the output circuit of civil power compensation assembly is provided with counnter attack power transmission device;
Connect with inverter after in parallel between the output of solar powered assembly and the output of civil power compensation assembly, and the output voltage Ux of solar powered assembly is greater than the output voltage Uy of civil power compensation assembly, Ux=Uy+40 volt (V).
Water pump system comprises the above-mentioned photovoltaic power generation apparatus based on city's electronic compensating and water pump, and water pump is connected with the inverter of said apparatus, and the rated operating power of water pump is Wz.
Rated voltage due to photovoltaic array is definite value, so can obtain Ux is definite value, in like manner, the voltage of urban distribution network also can be regarded as definite value, so Uy is also definite value.
When pump working, photoenvironment constantly changes, the electric current I x of the DC power supply of this device meeting photovoltaic array input header box can constantly change, and then the power output Wx of solar powered assembly can be affected, again because the output voltage Ux perseverance of solar powered assembly is greater than the output voltage Uy of civil power compensation assembly, so the output of the solar powered assembly of output meeting prioritizing selection of this device, if when the power output of solar powered assembly can not meet the operating power Wz of water pump, the civil power compensation assembly of this device just can output current Iy.
If namely the power output Wx of solar powered assembly is equal to or greater than the operating power Wz of water pump, solar powered assembly is separately to load (i.e. water pump) power supply, and civil power compensation assembly does not have output current; If when the power output Wx of solar powered assembly is less than the operating power Wz of load (i.e. water pump), solar powered assembly and civil power compensation assembly are powered to load (i.e. water pump) simultaneously, operating power Wz=(Ux*Ix)+(Uy*Iy) of water pump, so the change of no matter photoenvironment when pump working, the energy that sun the subject of knowledge and the object of knowledge is changed can be utilized to greatest extent.
Specify only Ux=Uy+40V in the present embodiment, but in actual use, tested Ux=Uy+20V, Ux=Uy+35V, Ux=Uy+60V, same technique effect can be obtained.
Above-described is only one embodiment of the present invention, it should be pointed out that for the person of ordinary skill of the art, under the premise without departing from the principles of the invention, can also make some modification and improvement, and these also should be considered as belonging to protection scope of the present invention.
Claims (5)
1., based on a photovoltaic power generation apparatus for city's electronic compensating, comprise solar powered assembly and civil power compensation assembly, it is characterized by:
Solar powered assembly comprises photovoltaic array and header box, and photovoltaic array is connected with header box, the DC power supply of solar powered assembly stable output, and its output voltage is Ux;
Civil power compensation assembly at least comprises the AC-DC converter be connected with urban distribution network, the DC power supply of civil power compensation assembly stable output, and its output voltage is Uy;
The output of solar powered assembly is in parallel with between the output of civil power compensation assembly, and Uy < Ux.
2. the photovoltaic power generation apparatus based on city's electronic compensating according to claim 1, is characterized in that:
Described civil power compensation assembly also comprises pressure regulating box, and urban distribution network inputs AC-DC converter by pressure regulating box.
3. the photovoltaic power generation apparatus based on city's electronic compensating according to claim 1, is characterized in that:
(Uy+20 volt)≤Ux≤(Uy+60 volt).
4. the photovoltaic power generation apparatus based on city's electronic compensating according to claim 1, is characterized in that:
Connect with inverter after in parallel between the output of solar powered assembly and the output of civil power compensation assembly.
5. a water pump system, comprises water pump and Blast Furnace Top Gas Recovery Turbine Unit (TRT), it is characterized in that: utilize the photovoltaic power generation apparatus based on city's electronic compensating according to any one of Claims 1-4 to power to water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267924.2A CN104810913A (en) | 2015-05-22 | 2015-05-22 | Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510267924.2A CN104810913A (en) | 2015-05-22 | 2015-05-22 | Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device |
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| CN104810913A true CN104810913A (en) | 2015-07-29 |
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| CN201510267924.2A Pending CN104810913A (en) | 2015-05-22 | 2015-05-22 | Photovoltaic power generation device based on commercial power compensation and water pump system of photovoltaic power generation device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089965A (en) * | 2015-08-31 | 2015-11-25 | 上海俊玥能源科技有限公司 | Alternating-current photovoltaic water pump system and control method thereof |
| CN113659693A (en) * | 2021-07-26 | 2021-11-16 | 东莞市嘉达磁电制品有限公司 | Automatic tasting type photoelectric commercial power automatic compensation system, equipment and method |
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Application publication date: 20150729 |
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