CN106849863B - Photovoltaic plant based on cold-hot-Electricity Federation production, which is contributed, quickly regulates and controls method - Google Patents
Photovoltaic plant based on cold-hot-Electricity Federation production, which is contributed, quickly regulates and controls method Download PDFInfo
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- CN106849863B CN106849863B CN201710081446.5A CN201710081446A CN106849863B CN 106849863 B CN106849863 B CN 106849863B CN 201710081446 A CN201710081446 A CN 201710081446A CN 106849863 B CN106849863 B CN 106849863B
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000033228 biological regulation Effects 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000013074 reference sample Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 claims description 3
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 2
- 230000005619 thermoelectricity Effects 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 1
- 244000144974 aquaculture Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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
- H02S40/40—Thermal components
- H02S40/42—Cooling means
-
- 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
- H02S40/40—Thermal components
- H02S40/44—Means to utilise heat energy, e.g. hybrid systems producing warm water and electricity at the same time
-
- 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
-
- 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
- Y02E10/60—Thermal-PV hybrids
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- Photovoltaic Devices (AREA)
Abstract
The photovoltaic plant output based on cogeneration that the invention discloses a kind of quickly freeze to the water in cold water reservoir using extra electric energy when supply exceed demand in electric energy supply area by regulation and control method；When supply-less-than-demand in electric energy supply area, photovoltaic panel is cooled down by backboard water-cooling pipeline, the system that can quickly improve 10% ~ 25% is contributed；When there is spike type load input in electric energy supply area, power station can carry out cooling treatment in advance according to dispatch command, improve generating capacity nargin.The present invention utilizes the temperature characterisitic of photovoltaic cell, the natural supply and demand difference that photovoltaic plant is contributed with workload demand is stabilized, avoid the electric power when supply exceed demand send outside or abandon at a distance network loss caused by light increase, the wasting of resources, and a kind of means of quick increase photovoltaic generation ability are provided in supply-less-than-demand, the part hot water demand of power station and peripheral facility is met simultaneously, improves comprehensive utilization of energy effect.
Description
Technical field
The present invention relates to a kind of photovoltaic plant outputs based on cold-hot-Electricity Federation production quickly to regulate and control method, belongs to new energy hair
Electric control field.
Background technology
In recent years, solar energy development utilizes scale rapid expansion, technological progress and industrial upgrading to accelerate, and cost significantly drops
It is low, it has also become the key areas of global energy transition.By the end of the year 2015, global solar generator installation has reached 2.3 hundred million
Kilowatt, current year newly-increased installation accounts for the 20% of the newly-increased generator installation in the whole world more than 53,000,000 kilowatts.2006 to 2015 years photovoltaic generations
Average annual growth rate is more than 40%, becomes the most fast energy kind of global growth rate.The accumulative installation of China's photovoltaic generation from
860,000 kilowatts in 2010 rise to 43,180,000 kilowatts in 2015, newly-increased 15,130,000 kilowatts of installation in 2015, add up installation and
Year, newly-increased installation ranked the first in the world.Photovoltaic generation application gradually forms easter-mid-wester region joint development, centralized and distributed
The pattern to develop simultaneously.The various Industrial Convergence development models such as photovoltaic generation and agricultural, aquaculture, ecological management are constantly brought forth new ideas, into
Enter diversification, large-scale development new stage.
" 13 " by be solar energy industry development critical period, basic task is industrial upgrading, reduces cost, expands
Using realization does not depend on self market-oriented sustainable development of public subsidies, becomes and realizes the year two thousand twenty and the year two thousand thirty non-fossil energy
The important force of primary energy consumption proportion 15% and 20% target is accounted for respectively.
However during the operation of photovoltaic plant and control, some difficult and challenges are encountered.Photovoltaic plant has been contributed
All dependent on irradiation situation.Irradiance profile is apparent " unimodal " form, i.e., irradiation gradually rises since morning,
Reach maximum value to noon, then gradually decrease, until the sun sets.Therefore the power curve of photovoltaic plant is also in substantially
" unimodal " form.And load curve can then have abundant " peak-to-valley-is flat " variation according to local load configuration, usually in the morning 7
O'clock to 9 points and at night 6 points to 8 points there are peaks of power consumption, and period at noon general power demand is less, this results in photovoltaic electric
The power curve and load curve stood have larger difference：Photovoltaic plant contribute less morning and dusk workload demand compared with
Height, and it is less in period at the noon workload demand that photovoltaic plant is contributed most.Traditional control means supply electric power in region
More than asking the period to need to send electric power more than needed outside using long distance power transmission or directly carrying out abandoning light processing, network loss is caused to increase
Add, the wasting of resources；And for the period of supply-less-than-demand, then lack the output that effective method quickly improves photovoltaic plant, with contracting
Small supply of electric power notch can only carry out load peak regulation by the conventional controllable electric power such as thermoelectricity, water power, if these power supplys with
Load geographical location is apart from each other, then needs to carry out remote electrical energy transportation, equally network loss is caused to increase.Therefore, traditional control
System strategy is unable to reach the purpose of comprehensive optimal control solar energy resources, and is unsatisfactory for the newest distribution provided of National Energy Board
The policy that the energy dissolves nearby.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of fast velocity modulations of photovoltaic plant output based on cold-hot-Electricity Federation production
Prosecutor method can stabilize the supply and demand difference that photovoltaic plant is contributed with workload demand, it is remote to avoid the electric power when supply exceed demand
It sends or abandons network loss increase, the wasting of resources caused by light outside, improve comprehensive utilization of energy effect.
In order to achieve the above object, the technical solution adopted in the present invention is：
A kind of quick regulation and control method of photovoltaic plant output based on cold-hot-Electricity Federation production, it is characterised in that：In photovoltaic plant
Warm water tank and cold water reservoir are set, refrigerating plant is installed in cold water reservoir, installs on photovoltaic component back plate and is passed through with warm water tank and cold water reservoir
Logical hot channel, the water inlet of the water outlet access hot channel of cold water reservoir, the water outlet of hot channel access warm water tank；
When in power supply area electric energy supply exceed demand when, freezed to the water in cold water reservoir using extra electric energy, make P1
=PREF+L1；
Wherein P1、PREF、L1Photovoltaic generation active power output, refrigeration work consumption when respectively supply exceed demand in electric energy supply area
And workload demand；
When electric energy supply-less-than-demand in power supply area, the cold water flowed out using cold water reservoir passes through the hot channel pair on backboard
Photovoltaic panel cools down, and makes L2=P2+ΔP2；
Wherein L2、P2、ΔP2Workload demand respectively in electric energy supply area when supply-less-than-demand, photovoltaic plant is uncolled
The output and photovoltaic plant of cooling cool after output increment；
When there is spike type load input in power supply area, photovoltaic plant is according to dispatch command, and cool place in advance
Reason, makes
WhereinWorkload demand, peakload respectively before peakload input need
It asks, the photovoltaic plant before peakload input is contributed and by the output nargin to be formed that cools.
Warm water tank is flowed into after the cooling water used that cools is heated, hot water confession is carried out to photovoltaic plant and peripheral facility
It answers；Surplus hot water passes back into cold water reservoir after heat dissipation and recycles.
When one timing of radiation parameter, the expression formula that photovoltaic module maximum output varies with temperature is：
Wherein, PT、K、T0, T be respectively photovoltaic module maximum output under work temperature, normal temperature T0Lower photovoltaic group
Part maximum output, temperature coefficient, photovoltaic module standard operating temperature and photovoltaic module actual work temperature.
Photovoltaic module standard operating temperature T0=25 DEG C.
When irradiation intensity is 1000W/m2When, reference sample temperature coefficient K=-0.41%/DEG C.
Output increment after photovoltaic plant cools is：
ΔP2=P2×K×ΔT
Wherein, Δ T is the variable quantity that the process of cooling makes photovoltaic module temperature occur.
Temperature is up to 100 DEG C or more when photovoltaic panel works, if being carried out to photovoltaic panel by backboard hot channel using cold water
It cools to 40 DEG C, reference sample temperature coefficient K=-0.41%/DEG C, then power ascension will be more than 20% in the short time.
The advantageous effect that the present invention is reached：
The present invention utilizes the temperature characterisitic of photovoltaic cell, and the natural supply and demand for having stabilized photovoltaic plant output and workload demand are poor
It is different, avoid the electric power when supply exceed demand send outside or abandon at a distance network loss caused by light increase, the wasting of resources, and for being less than
A kind of means of quick increase photovoltaic generation ability are provided when asking, while the part hot water for meeting power station and peripheral facility needs
It asks, improves comprehensive utilization of energy effect.
Description of the drawings
Fig. 1 is the flow chart of the present invention.
Fig. 2 is to contribute quickly to regulate and control the photovoltaic plant structural representation of method using the photovoltaic plant based on cold-hot-Electricity Federation production
Figure.
Fig. 3 is the workload demand and output of power station curve comparison figure in the case of not carrying out output regulation and control.
Fig. 4 is the workload demand and output of power station curve comparison figure after carrying out output regulation and control.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.Following instance is only used for clearly illustrating the present invention's
Technical solution, and not intended to limit the protection scope of the present invention.
A kind of quickly regulation and control method, including following step as shown in Figure 1, photovoltaic plant based on cold-hot-Electricity Federation production is contributed
Suddenly：
When in power supply area electric energy supply exceed demand when, freezed to the water in cold water reservoir using extra electric energy, meet
System power balances, even if P1=PREF+L1；
Wherein P1、PREF、L1Photovoltaic plant when respectively supply exceed demand in electric energy supply area contributes, refrigeration work consumption and
Workload demand；
When electric energy supply-less-than-demand in power supply area, cooling drop is carried out to photovoltaic panel by backboard hot channel using cold water
Temperature quickly improves system output output, even if L2=P2+ΔP2；
Wherein L2、P2、ΔP2Workload demand, photovoltaic plant respectively in power supply area when supply-less-than-demand are cooling
Preceding output and photovoltaic plant cool after output increment；
When there is spike type load input in power supply area, power station can be carried out cooling treatment in advance, carry according to dispatch command
High generating capacity nargin, even if
WhereinWorkload demand, peakload respectively before peakload input need
It asks, the photovoltaic plant before peakload input is contributed and by the output nargin to be formed that cools；
Warm water tank is flowed into after the cooling water used that cools is heated, hot water confession can be carried out to power station and peripheral facility
It answers；Surplus hot water passes back into cold water reservoir after heat dissipation and recycles.
According to the test result of photovoltaic module producer, when one timing of radiation parameter, component maximum output variation with temperature
Mathematic(al) representation is,
Wherein, PT、K、T0, T be respectively work temperature lower component maximum output, normal temperature T0Lower component maximum goes out
Power, temperature coefficient, component standard work temperature0=25 DEG C and component actual work temperature.When irradiation intensity is 1000W/m2
When, reference sample temperature coefficient K=-0.41%/DEG C.
Make the reduction of photovoltaic module operating temperature by cooling, then the output increment after photovoltaic plant cools can table
It is shown as：
ΔP2=P2×K×ΔT
Wherein, Δ P2、P2, Δ T be respectively before output increment, photovoltaic plant after photovoltaic plant cools cools
It contributes, the variable quantity that the process of cooling makes photovoltaic module temperature occur.Photovoltaic panel work when temperature up to 100 DEG C or more, if
Photovoltaic panel is cooled down to 40 DEG C by backboard hot channel using cold water, reference sample temperature coefficient K=-
0.41%/DEG C, then power ascension will be more than 20% in the short time.
As shown in Fig. 2, for the photovoltaic plant for quick regulation and control method of being contributed using the photovoltaic plant based on cold-hot-Electricity Federation production
Structural schematic diagram.Compared to conventional photovoltaic power station, the power station increase a warm water tank, a cold water reservoir, it is a set of be installed on it is cold
Refrigerating plant, a set of water-cooling heat radiating system for being installed on photovoltaic component back plate and corresponding water system pipeline in reservoir are set
It is standby.
As shown in figure 3, not carry out the workload demand in the case of output regulation and control and output of power station curve comparison figure.Morning 7
6 points to 8 electricity peak period photovoltaic plants are contributed less o'clock to 9 points and at night, are needed normal by thermoelectricity, water power etc.
Rule controllable electric power supplies load.And period at noon workload demand is less, photovoltaic plant output reaches peak value at this time, is more than
Workload demand can only be sent or be abandoned outside light mode by remote distance power and ensure the electric energy equilibrium of supply and demand.
As shown in figure 4, to carry out the workload demand after output regulation and control and output of power station curve comparison figure.Using based on it is cold-
The photovoltaic plant of thermo-electrically coproduction is contributed after quick regulation and control method, and the morning peak period can be reduced by photovoltaic plant self-control
20% or more electric power notch；Period at noon photovoltaic plant sends out electric energy extra and can be used for cold water reservoir refrigeration；When electricity consumption evening peak
A degree of make up also can be obtained in the electric energy notch at section initial stage；The part hot water that can solve power station and peripheral facility simultaneously supplies
Answer problem.Comprehensive utilization of energy effect is improved.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (6)
- A kind of quickly regulation and control method 1. photovoltaic plant based on cold-hot-Electricity Federation production is contributed, it is characterised in that：It is set in photovoltaic plant Warm water tank and cold water reservoir are set, refrigerating plant is installed in cold water reservoir, installs on photovoltaic component back plate and is penetrated through with warm water tank and cold water reservoir Hot channel, the water inlet of the water outlet access hot channel of cold water reservoir, the water outlet of hot channel accesses warm water tank；When in power supply area electric energy supply exceed demand when, freezed to the water in cold water reservoir using extra electric energy, make P1=PREF+ L1；Wherein P1、PREF、L1Photovoltaic generation active power output, refrigeration work consumption when respectively supply exceed demand in electric energy supply area and Workload demand；When electric energy supply-less-than-demand in power supply area, using the cold water of cold water reservoir outflow by the hot channel on backboard to backboard It cools down, makes L2=P2+ΔP2；Wherein L2、P2、ΔP2Workload demand respectively in electric energy supply area when supply-less-than-demand, photovoltaic plant is uncolled cooling Output and photovoltaic plant cool after output increment；When there is spike type load input in power supply area, according to dispatch command, cool photovoltaic plant processing in advance, makesWhereinWorkload demand, peakload demand, point respectively before peakload input Photovoltaic plant before peak load input is contributed and passes through the output nargin to be formed that cools.
- The quickly regulation and control method 2. a kind of photovoltaic plant based on cold-hot-Electricity Federation production according to claim 1 is contributed, it is special Sign is：Warm water tank is flowed into after the cooling water used that cools is heated, hot water confession is carried out to photovoltaic plant and peripheral facility It answers；Surplus hot water passes back into cold water reservoir after heat dissipation and recycles.
- The quickly regulation and control method 3. a kind of photovoltaic plant based on cold-hot-Electricity Federation production according to claim 1 is contributed, it is special Sign is：When one timing of radiation parameter, the expression formula that photovoltaic module maximum output varies with temperature is：Wherein, PT、K、T0, T be respectively photovoltaic module maximum output under work temperature, standard operating temperature T0Lower photovoltaic group Part maximum output, temperature coefficient, photovoltaic module standard operating temperature and photovoltaic module actual work temperature.
- The quickly regulation and control method 4. a kind of photovoltaic plant based on cold-hot-Electricity Federation production according to claim 3 is contributed, it is special Sign is：Photovoltaic module standard operating temperature T0=25 DEG C.
- The quickly regulation and control method 5. a kind of photovoltaic plant based on cold-hot-Electricity Federation production according to claim 3 is contributed, it is special Sign is：When irradiation intensity is 1000W/m2When, reference sample temperature coefficient K=-0.41%/DEG C.
- The quickly regulation and control method 6. a kind of photovoltaic plant based on cold-hot-Electricity Federation production according to claim 1 is contributed, it is special Sign is：Output increment after photovoltaic plant cools is：ΔP2=P2×K×ΔTWherein, Δ T is the variable quantity that the process of cooling makes photovoltaic module temperature occur, and K is reference sample temperature coefficient.
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| CN201710081446.5A CN106849863B (en) | 2017-02-15 | 2017-02-15 | Photovoltaic plant based on cold-hot-Electricity Federation production, which is contributed, quickly regulates and controls method |
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| US7715950B2 (en) * | 2007-03-01 | 2010-05-11 | Wisconsin Alumni Research Foundation | Non-inverter based distributed energy resource for use in a dynamic distribution system |
| CN102829575B (en) * | 2012-09-10 | 2015-03-18 | 湖南康拜恩分布式能源科技有限公司 | Multisource region type cold, heat and electricity combined supply energy network system and method |
| CN103745269A (en) * | 2013-11-04 | 2014-04-23 | 国家电网公司 | Optimal energy management method for microgird system having distributed photovoltaic equipment |
| CN106022503A (en) * | 2016-03-17 | 2016-10-12 | 北京睿新科技有限公司 | Micro-grid capacity programming method meeting coupling type electric cold and heat demand |
| CN106372805B (en) * | 2016-09-07 | 2019-12-10 | 广东工业大学 | method and system for calculating generated energy of water cooling photovoltaic-photo-thermal integrated power generation system |
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