CN102751745A - System and method for power supply of solar power generation - Google Patents
System and method for power supply of solar power generation Download PDFInfo
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- CN102751745A CN102751745A CN2011100954321A CN201110095432A CN102751745A CN 102751745 A CN102751745 A CN 102751745A CN 2011100954321 A CN2011100954321 A CN 2011100954321A CN 201110095432 A CN201110095432 A CN 201110095432A CN 102751745 A CN102751745 A CN 102751745A
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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
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Abstract
The invention belongs to the technical field of solar power generation and power supply application, and specifically relate to a system and a method for power supply of solar power generation. The system uses a small amount of (less than 30% of power generation) storage batteries while electricity generated by solar power is directly supplied to users, and uses electric energy stored in the storage batteries to add power for an insufficient part of solar energy power, so that unstable electric power generated by the solar energy turns into stable electric power through adding power. Electric quantity configuration of the storage batteries is only a difference of a maximum electrical power value and an average value of user loads, however, in a prior system, the electric quantity configuration is more than two times or three times of the user loads' maximum electrical power value. So the system can save investment of the storage batteries for more than 80%, and save power supply cost for more than 50%. In addition, the electricity generated by the solar power can be directly supplied to power the user loads, thereby reducing power consumption and wasting of resources, greatly improving use efficiency of the solar energy power, and greatly increasing return of investment.
Description
Technical field
The invention belongs to solar power generation and power applications technical field, be specifically related to a kind of solar power generation electric power system and method.
Technical background
As everyone knows, solar electric power is in generating on the daytime of peak of power consumption, does not have electricity evening and can send out, as the use that substitutes and reduce conventional electric power; Alleviate power shortage, and the application of promoting new forms of energy, solar power generation has huge advantage and advantage, but fatal shortcoming is also arranged; Be exactly that institute's electricity is unstable, directly supply load electricity consumption can not be satisfied the requirement of load electricity consumption, therefore; Prior art solves this problem through increasing accumulating system, that is: solar power generation is stored in earlier in the storage battery, is discharging after the electric power storage some; Use through the inversion supply load, this just makes system increase the cost of electric power storage, has also increased the consume of power conversions when charging; And, because electric power storage needs the suitable time, and needs certain quantity electric power, thus when charging, can not continue power supply, or increase storage battery quantity more than one times, so, increased scale of investment and generating electric cost greatly.According to the solar electric power supply system of existing market existing techniques in realizing, more than every watt of about 25 yuan/W RMB of investment, the solar power generation portion 10 yuan/W RMB of only having an appointment wherein; Account for system 40% in; Be about 1/5th even lower this factor of power generation plate if consider the life-span of storage battery commonly used, the electric power storage cost will be above the investment of power generation plate part, so; (by the lifetime of system in 25 years and 5% investment annual interest; And every W device of solar generating is annual when sending out a kilowatt-hour and calculating) present every generating once approximately had been more than 1.5 yuans, if when not considering that electric power storage is partly invested, cost of electricity-generating can reduce by half; It is 0.75 yuan of less than; Such cost is to accept and to have huge application prospect in the power supply and demand transaction of the marketization, and particularly along with the worsening shortages of coal resource and improving constantly of coal price, solar power generation can constantly increase the vitality of self and the competitiveness in market.
How will invest that to reduce and improve investment repayment with cost of electricity-generating be one of solar electric power key in application problem, the price reduction that constantly develops solar panel along with technology is sure, but in that this is limited in the recent period, the storage battery cost too.To under existence conditions, address this problem, just need change and innovate prior art and implementation.A kind of solar power generation electric power system and method that the present invention proposes are exactly a kind of new technical approach and scheme, also are a kind of useful and effective innovations.Its technical scheme is to let solar power generation can directly supply with user load use, and is stable power supply, can satisfy the needs and the requirement of user load.
A kind of solar power generation electric power system of the present invention and method; The characteristics of its technical scheme are; At the direct storage battery of adapted a small amount of (be less than energy output 30%) in the power supply of solar power generation; And using its electric energy that holds to mend electricity as the insufficient section of solar electric power, the unstable electric power that the sun is sent becomes stable electric power through mending electricity.So; As long as solar energy on average generates electricity more than or equal to the power of electric loading the time, can satisfy the demand of user load, thereby the scale of investment of system is reduced greatly; Condition by above-mentioned market and cost are set is compared; Its power supply cost of solar power generation electric power system that technical scheme of the present invention realizes is about about 0.8 yuan/W RMB, can be controlled at least in the 1 yuan/W RMB, and be the 50%-60% of the solar powered cost of prior art; Obvious technical effects, economic and social benefit is huge.
Summary of the invention
In order to solve down prior art and product-specific investments is big, cost of electricity-generating is high defective from existence conditions; The investment and the cost of electricity-generating of solar power generation electric power system are reduced; And then realization improves the purpose of investment repayment; For this reason; The present invention proposes a kind of solar power generation electric power system and method; System by distributing electric power and circuit for regulating and controlling module, charging circuit, batteries 1, batteries 2, mend electric control circuit, inverter circuit, net electricity automatically and insert with electric power dispensable circuit, user load, ammeter, solar power generation and a plurality of electric-controlled switch and forms, it is characterized in that solar power generation links to each other with the electric power dispensable circuit and connects load, the power supply electrical path of formation solar power generation to user load through the net electricity access of mending electric control circuit and inverter circuit automatically and being connected the net electricity through distributing electric power and circuit for regulating and controlling module; Solar power generation simultaneously respectively through two electric-controlled switchs is connected batteries 1 and batteries 2 with the circuit for regulating and controlling module through charging circuit through distributing electric power, constitutes the electric power storage charging power path of solar power generation to batteries; Batteries 1 links to each other with automatic benefit electric control circuit through two electric-controlled switchs with batteries 2, constitutes the electrical path of batteries to benefit electricity electrical path of mending circuit and electric power storage to power supply; The net electricity also inserts through the net electricity through ammeter and is connected user load with the electric power dispensable circuit, power supply of formation net electricity and the electrical path of allocating.
A kind of solar power generation electric power system according to the invention and method; The characteristic of its distributing electric power and circuit for regulating and controlling module is the distributing electric power circuit that is provided with automatic identification and distribution; And link to each other with each electric-controlled switch; The power supply that detection recognizes solar power generation is distributed to charging circuit with excrescent electric power during more than the user load electricity consumption.
A kind of solar power generation electric power system according to the invention and method; The characteristic of its charging circuit is to have two electrical path at least; Connecting two electric-controlled switchs and controlled respectively and link to each other with 2 liang of group storage battery groups of batteries 1 and batteries, is battery charging individually or simultaneously.
A kind of solar power generation electric power system according to the invention and method; Its batteries characteristic is to have batteries 1 and 2 liang of group storage battery groups of batteries at least; When inverter circuit is worked; Wherein one group or two groups through electric-controlled switch with mend electric control circuit automatically and be communicated with, and mend electricly for inverter circuit automatically through the threshold circuit of mending automatically in the electric control circuit, the confession inverter circuit is exported stable power.
A kind of solar power generation electric power system according to the invention and method, its characteristic of mending electric control circuit automatically are that have can automatically controlled threshold circuit, and preset the electric power threshold value of mending electricity according to system configuration and electric power allotment demand.
A kind of solar power generation electric power system according to the invention and method, its net electricity insert and the characteristic of electric power dispensable circuit is to be provided with automatically controlled electric power to insert switch and electric power commutation circuit, and the controlled electricity of will netting carries out on-line conversion with the solar power generation power supply.
A kind of solar power generation electric power system according to the invention and method, system's constitutive characteristic are that system configuration and integrated construction method are:
1. solar power generation maximum electric power and the load electricity consumption of normal electricity consumption maximum period of electric power storage electric power sum >=load;
2. the solar energy of period of generating electricity on average generates electricity >=the normal average electricity consumption of load;
3. the load electricity consumption of the solar power generation of load low power consumption period >=load low power consumption period;
4. the normal electricity consumption maximum of the electric weight >=load of electric power storage electric power electric weight deducts and on average uses power consumption.
This shows that storage battery strength configuration of the present invention only needs the poor of maximum electric power value and mean value, existing system then needs peaked more than 2 times or 3 times; So can save the storage battery investment more than 80%; And, make solar power generation reduce the power loss and the wasting of resources directly for the user load power supply; Greatly improve the service efficiency of solar electric power, increased investment repayment greatly.
Description of drawings
Fig. 1 is the user side solar power generation electric power system principle schematic of prior art;
Fig. 2 is a solar power generation electric power system principle of work and power sketch map.
Embodiment
As examples of implementation, to a kind of solar power generation electric power system and method afford explanation, still, technology of the present invention and scheme are not limited to the content that present embodiment provides in conjunction with accompanying drawing.
Specific embodiment of the invention accompanying drawings is following; As shown in Figure 2; The solar power generation electric power system by distributing electric power and circuit for regulating and controlling module (1), charging circuit (2), batteries 1 (3), batteries 2 (4), mend electric control circuit (5), inverter circuit (6), net electricity automatically and insert with electric power dispensable circuit (7), user load (8), ammeter (9), solar power generation (10), electric-controlled switch (11), electric-controlled switch (12), electric-controlled switch (13), electric-controlled switch (14) and form; It is characterized in that solar power generation (10) links to each other with electric power dispensable circuit (7) and connects load (8), the power supply electrical path of formation solar power generation (10) to user load (8) through the net electricity access of mending electric control circuit (5) and inverter circuit (6) automatically and being connected the net electricity through distributing electric power and circuit for regulating and controlling module (1); Solar power generation (10) simultaneously respectively through electric-controlled switch (13) with electric-controlled switch (14) is connected batteries 1 (3) and batteries 2 (4) with circuit for regulating and controlling module (1) through charging circuit (2) through distributing electric power, constitutes the electric power storage charging power path of solar power generation to batteries; Batteries 1 (3) links to each other with the automatic electric control circuit (5) of mending with electric-controlled switch (12) through electric-controlled switch (11) with batteries 2 (4), constitutes batteries to benefit electricity electrical path of mending circuit and electric power storage to the electrical path of supplying power; The net electricity also inserts through the net electricity through ammeter (9) and is connected user load (8) with electric power dispensable circuit (7), power supply of formation net electricity and the electrical path of allocating.
A kind of solar power generation electric power system according to the invention and method; Characteristic as its distributing electric power of examples of implementation and circuit for regulating and controlling module (1) is the distributing electric power circuit that is provided with automatic identification and distribution; And link to each other with each electric-controlled switch; The power supply that detection recognizes solar power generation (10) is distributed to charging circuit (2) with excrescent electric power during more than user load (8) electricity consumption.
A kind of solar power generation electric power system according to the invention and method; Characteristic as its charging circuit of examples of implementation (2) is to have two electrical path at least; Connecting electric-controlled switch (13) respectively and link to each other with batteries 2 (4) two group storage battery groups with batteries 1 (3) with electric-controlled switch (14) is also controlled, is battery charging individually or simultaneously.
A kind of solar power generation electric power system according to the invention and method; As its batteries characteristic of examples of implementation is to have batteries 1 (3) and batteries 2 (4) two group storage battery groups at least; When inverter circuit (6) is worked; Wherein one group or two groups through electric-controlled switch with mend electric control circuit (5) automatically and be communicated with, and be that inverter circuit (6) is mended automatically electric through mending threshold circuit in the electric control circuit (5) automatically, confession inverter circuit (6) is exported stable power.
A kind of solar power generation electric power system according to the invention and method are that have can automatically controlled threshold circuit as its characteristic of automatically mending electric control circuit (5) of examples of implementation, and preset according to system configuration and electric power allotment demand and to mend electric electric power threshold value.
A kind of solar power generation electric power system according to the invention and method; The characteristic that inserts with electric power dispensable circuit (7) as its net electricity of examples of implementation is to be provided with automatically controlled electric power to insert switch and electric power commutation circuit, and controlled electricity and the solar power generation will net supplied power and carried out on-line conversion.
A kind of solar power generation electric power system according to the invention and method, system's constitutive characteristic are that system configuration and integrated construction method are:
1. solar power generation maximum electric power and the load electricity consumption of normal electricity consumption maximum period of electric power storage electric power sum >=load;
2. the solar energy of period of generating electricity on average generates electricity >=the normal average electricity consumption of load;
3. the load electricity consumption of the solar power generation of load low power consumption period >=load low power consumption period;
4. the normal electricity consumption maximum of the electric weight >=load of electric power storage electric power electric weight deducts and on average uses power consumption.
Applicating example:
With the 3300W user load; Oepration at full load is 3 times each 5 minutes during the every day solar power generation, and load average is used power consumption 2100W, and the load low power consumption period uses power consumption 900W to be example; As the examples of implementation of system configuration and integrated structure, one of system's apolegamy scheme of minimal configuration is:
(set: the solar power generation period average is 5 hours to select 3000W solar power generation assembly; Generating efficiency is 85%; From 1000W to 2600W; Average generating is 2200W) and 1200VAH storage battery (2V*30AH; 20 and be divided into 2 groups), dispose again distributing electric power and circuit for regulating and controlling module (1), charging circuit (2), automatically mend electric control circuit (5), inverter circuit (6), the net electricity inserts and electric power dispensable circuit (7), ammeter (9), electric-controlled switch (11), electric-controlled switch (12), electric-controlled switch (13), electric-controlled switch (14) are formed, and can constitute the solar power generation electric power system of the technical approach typical case minimal configuration of the present invention that the 3500W user load uses.
At least need dispose 3800W solar power generation assembly and the batteries more than the 6000VAH by prior art and its formation of product.
From the basic point that solar power generation effectively utilizes, technical approach of the present invention has been saved more than 50% than the generating power supply cost of prior art and product with the solar power generation power supply cost of system.
Claims (7)
1. solar power generation electric power system and method; System by distributing electric power and circuit for regulating and controlling module (1), charging circuit (2), batteries 1 (3), batteries 2 (4), mend electric control circuit (5), inverter circuit (6), net electricity automatically and insert with electric power dispensable circuit (7), user load (8), ammeter (9), solar power generation (10), electric-controlled switch (11), electric-controlled switch (12), electric-controlled switch (13), electric-controlled switch (14) and form; It is characterized in that solar power generation (10) links to each other with electric power dispensable circuit (7) and connects load (8), the power supply electrical path of formation solar power generation (10) to user load (8) through the net electricity access of mending electric control circuit (5) and inverter circuit (6) automatically and being connected the net electricity through distributing electric power and circuit for regulating and controlling module (1); Solar power generation (10) simultaneously respectively through electric-controlled switch (13) with electric-controlled switch (14) is connected batteries 1 (3) and batteries 2 (4) with circuit for regulating and controlling module (1) through charging circuit (2) through distributing electric power, constitutes the electric power storage charging power path of solar power generation to batteries; Batteries 1 (3) links to each other with the automatic electric control circuit (5) of mending with electric-controlled switch (12) through electric-controlled switch (11) with batteries 2 (4), constitutes batteries to benefit electricity electrical path of mending circuit and electric power storage to the electrical path of supplying power; The net electricity also inserts through the net electricity through ammeter (9) and is connected user load (8) with electric power dispensable circuit (7), power supply of formation net electricity and the electrical path of allocating.
2. said a kind of solar power generation electric power system of claim 1 and method; The characteristic of its distributing electric power and circuit for regulating and controlling module (1) is the distributing electric power circuit that is provided with automatic identification and distribution; And link to each other with each electric-controlled switch; The power supply that detection recognizes solar power generation (10) is distributed to charging circuit (2) with excrescent electric power during more than user load (8) electricity consumption.
3. said a kind of solar power generation electric power system of claim 1 and method; The characteristic of its charging circuit (2) is to have two electrical path at least; Connecting electric-controlled switch (13) respectively and link to each other with batteries 2 (4) two group storage battery groups with batteries 1 (3) with electric-controlled switch (14) is also controlled, is battery charging individually or simultaneously.
4. said a kind of solar power generation electric power system of claim 1 and method; Its batteries characteristic is to have batteries 1 (3) and batteries 2 (4) two group storage battery groups at least; When inverter circuit (6) is worked; Wherein one group or two groups through electric-controlled switch with mend electric control circuit (5) automatically and be communicated with, and be that inverter circuit (6) is mended automatically electric through mending threshold circuit in the electric control circuit (5) automatically, confession inverter circuit (6) is exported stable power.
5. said a kind of solar power generation electric power system of claim 1 and method, its characteristic of mending electric control circuit (5) automatically are that have can automatically controlled threshold circuit, and preset the electric power threshold value of mending electricity according to system configuration and electric power allotment demand.
6. characteristic that said a kind of solar power generation electric power system of claim 1 and method, its net electricity insert with electric power dispensable circuit (7) is to be provided with automatically controlled electric power to insert switch and electric power commutation circuit, and controlled electricity and the solar power generation will net supplied power and carried out on-line conversion.
7. said a kind of solar power generation electric power system of claim 1 and method, system's constitutive characteristic is that system configuration and integrated construction method are:
1. solar power generation maximum electric power and the load electricity consumption of normal electricity consumption maximum period of electric power storage electric power sum >=load;
2. the solar energy of period of generating electricity on average generates electricity >=the normal average electricity consumption of load;
3. the load electricity consumption of the solar power generation of load low power consumption period >=load low power consumption period;
4. the normal electricity consumption maximum of the electric weight >=load of electric power storage electric power electric weight deducts and on average uses power consumption.
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| CN201110095432.1A CN102751745B (en) | 2011-04-18 | 2011-04-18 | Method for power supply of solar power generation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103944249A (en) * | 2013-01-22 | 2014-07-23 | 周锡卫 | Multifunctional energy storage inverter system |
| CN105402939A (en) * | 2015-12-21 | 2016-03-16 | 广州虹能节能技术有限公司 | Solar photovoltaic heat pump |
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| CN102751745B (en) | 2014-12-24 |
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