CN108736498A - A kind of energy control method for smart home light storage electricity generation system - Google Patents
A kind of energy control method for smart home light storage electricity generation system Download PDFInfo
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- CN108736498A CN108736498A CN201810504388.7A CN201810504388A CN108736498A CN 108736498 A CN108736498 A CN 108736498A CN 201810504388 A CN201810504388 A CN 201810504388A CN 108736498 A CN108736498 A CN 108736498A
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- 230000005611 electricity Effects 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000010248 power generation Methods 0.000 claims abstract description 15
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 230000008859 change Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 5
- 229910052744 lithium Inorganic materials 0.000 claims description 5
- 239000005955 Ferric phosphate Substances 0.000 claims description 4
- 229940032958 ferric phosphate Drugs 0.000 claims description 4
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 4
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 3
- 238000010348 incorporation Methods 0.000 claims description 2
- 238000005286 illumination Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004851 dishwashing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J3/008—Circuit arrangements for ac mains or ac distribution networks involving trading of energy or energy transmission rights
-
- H02J3/383—
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/10—Photovoltaic [PV]
-
- 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
-
- 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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention provides a kind of energy control methods for smart home, for living in the area for having carried out time-of-use tariffs policy and the resident for being equipped with intelligent domestic system, increase electricity consumption in the electricity price paddy period to charge for accumulator, in the electricity price peak period generation of electricity by new energy is assisted using accumulator, by remaining electricity online while meeting user load demand, the new energy is solar energy, and generation mode is photovoltaic generation, and accumulator composition light is added in photovoltaic power generation apparatus and stores up electricity generation system.Consider illumination condition, loading condition, charge status of battery and time-of-use tariffs factor, proposes more economical paddy valence charge accumulating method.Switching condition of the present invention is simple, and application mode is various, has higher economy.
Description
Technical field
It is especially a kind of for smart home light storage power generation system the present invention relates to a kind of energy hole field of smart home
The energy control method of system.
Background technology
It is shown according to National Energy Board's publication data, newly-increased 53,060,000 kilowatts of the installation of photovoltaic generation in 2017 occupies renewable energy
First of source, far super wind-powered electricity generation (15,030,000 kilowatts), water power (9,000,000 kilowatts), biomass power generation (2,740,000 kilowatts) have shown photovoltaic
The important function that industry plays wherein.To encourage the healthy effective development of photovoltaic industry, country to promulgate a series of support political affairs
Plan, wide market.With the rise of regenerative resource, photovoltaic power generation technology is constantly ripe, and application mode is more and more richer
It is rich.How solar energy is made full use of, formulates efficient energy control method and merit attention.
Energy control method refers to the method operated in Energy Management System (EMS), ensures power supply with minimum cost
Safety and electricity consumption economy.Its influence factor come from various aspects, the photovoltaic power of supply side, electricity price, batteries to store energy,
Transfer efficiency, the load etc. of Demand-side.
Through retrieval, the Chinese patent application of Publication No. 102403930A (CN102403930B mandates), which provides
A kind of independent type photovoltaic power generation system and capacity optimization method.Its independent type photovoltaic power generation system includes photovoltaic subsystem, stores
Battery subsystem, load and control centre.In the invention, the purpose of energy control method is to coordinate each portion of electricity generation system
Part realizes annual balanced supply and demand of energy while meeting user load daily demand.Pass through meteorological data and load data
The capacity of each element in electricity generation system is optimized, is determined to realize that the power system capacity of annual balanced supply and demand of energy is best
Configuration.This method is suitable for optimizing using the photovoltaic generating system capacity of single and various energy resources storage device, and user can be on-demand
It is configured.
The Chinese patent application of Publication No. 103545847A, the invention are related to a kind of energy pipe of solar energy power generating
Reason system, including Three models：Independent operating is incorporated into the power networks and is closed with system, is divided into photovoltaic control subsystem, battery management
Subsystem.By the charge and discharge control to inverter and accumulator, realizes to power grid and more electric energy, load side electric energy matter are provided
Amount raising, reactive power compensation, harmonics restraint, provides the functions such as voltage and frequency support for power grid at UPS.Battery management subsystem
Include constant-current charge and constant-voltage charge both of which when system charging, when electric discharge then maintains DC bus-bar voltage to be equal to photovoltaic maximum work
Rate floating voltage is constant, and when photovoltaic generation is less than setting value and battery is without electricity, then system is closed.
Compared with the Chinese patent application of Publication No. 102403930A and 103545847A, first：It is proposed by the present invention
The energy control method of electricity generation system is stored up suitable for smart home light can not only make solar energy utilization ratio higher, and improve
Economy；Secondly, the control strategy main purpose proposed in patent 102403930A and 103545847A is guarantee system
Stable operation characteristic improves system reliability, and the present invention is to make full use of time factor, on the basis of system reliability service
On, by reasonable arrangement system operation mode and period, improve economy.Finally, energy control method proposed by the present invention is not
The sale of electricity mode of photovoltaic online is only accounted for, also innovatively proposes and sets up quick charge stake mode sale of electricity to further increase
Profit.
Invention content
For the defects in the prior art, the object of the present invention is to provide a kind of for smart home light storage power generation system
The energy control method of system makes user's maximization of economic benefit, the present invention make full use of time factor, considers illumination item
Part, loading condition, charge status of battery and time-of-use tariffs factor realize the paddy valence electric power storage of optimization.
The present invention is realized according to following technical scheme：
A kind of energy control method for smart home light storage electricity generation system, it is characterised in that：It is carried out for living in
The area of time-of-use tariffs policies and the resident for being equipped with intelligent domestic system increase electricity consumption in electricity price paddy period and use
It charges in accumulator, generation of electricity by new energy is assisted using accumulator in the electricity price peak period, it will be remaining while meeting user load demand
Electricity online, the new energy are solar energy, and generation mode is photovoltaic generation, and light is formed using accumulator in photovoltaic power generation apparatus
Store up electricity generation system.
In above-mentioned technical proposal, the accumulator uses ferric phosphate lithium cell, capacity to meet the period electricity consumption of resident peak
The on-vehicle battery of electric bicycle, new-energy automobile is added family's light as energy storage device and stores up electricity generation system so that electricity by demand
Energy application mode diversification, reduces accumulator cost of investment.
In above-mentioned technical proposal, the light storage electricity generation system includes three kinds of operating conditions, is specifically included：It is incorporated into the power networks, energy
Amount flows to load and power grid by photovoltaic；Islet operation, energy are flowed to by accumulator and are loaded；It is incorporated into the power networks, energy is flowed to by power grid
Accumulator and load.
In above-mentioned technical proposal, the smart home light storage electricity generation system should include central control unit, voltage and current
Sampling unit, timing control unit, the timing control unit record time change and judge peak interval of time, the center control
Unit processed predicts the curve that photovoltaic generation power changes over time according to special algorithm, and record load uses data, according to data
The run the period of reasonable arrangement load in second day, makes it match photovoltaic generation prediction curve, to reduce battery discharging depth,
Extend battery；The voltage and current feedback signal judges the magnitude relationship of photovoltaic generation power and bearing power,
Condition as operating mode switching.
In above-mentioned technical proposal, the residence of the resident executes paddy valence at 10 points to next day 6:00 AM at night, early
Upper 6 points to 10 points at night execute peak valence；Photovoltaic subsidy is executed according to remaining electricity online of generating power for their own use, including local coal-fired mark post online
Electricity price, public subsidies and regional subsidy, wherein regional subsidy execute 5 years, and public subsidies execute 20 years；Sales rate of electricity and subsidy are made
For the condition of operating mode switching.
Compared with prior art, the present invention has following advantageous effect：
For control method proposed by the present invention after considering time factor, the priority of power supply is no longer photovoltaic, battery, electricity
Net, but actively selection is powered by power grid in electricity price low-valley interval, the i.e. state-of-charge of battery be no longer classified as change working according to
According to the service life of battery can be conducive to extend to avoid battery over-discharge.Meanwhile reducing a kind of operating mode, make the control be
System is more succinct.This energy control method operating mode is clear, and switching condition is simple, has given full play to the energy storage effect of accumulator,
Application mode is various, and economy is high.Record uses data, can match the use habit of user personalizedly, enhances intelligent family
The comfort level and experience sense in residence.Appropriate charge and discharge play maintenance action to battery, also reduce the impact to power grid, play peak clipping
The proportionality action of Fill valley.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is that light stores up power generation system structure in the present invention；
Fig. 2 is the flow chart that energy control method proposed by the invention executes；
Fig. 3 is the operating mode switching figure of energy control method proposed by the invention；
Fig. 4 is photovoltaic generating system in 5 years, traditional light storage electricity generation system and uses energy hole side proposed by the present invention
The day profit comparison diagram of the light storage electricity generation system of method；
Fig. 5 is photovoltaic generating system after 5 years, traditional light storage electricity generation system and uses energy hole side proposed by the present invention
The day profit comparison diagram of the light storage electricity generation system of method.
Specific implementation mode
With reference to specific embodiment, the present invention is described in detail.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, several changes and improvements can also be made.These belong to the present invention
Protection domain.
Fig. 1 is that light stores up power generation system structure.As shown, photovoltaic system is by photovoltaic module, accumulator, load, two-way change
The compositions such as parallel operation, while having interaction with power grid.Component may make up a variety of methods of operation.
A kind of energy control method for smart home light storage electricity generation system of the present invention, peak has been carried out for living in
The area of paddy electrovalence policy and the resident for being equipped with intelligent domestic system increase electricity consumption for storing in the electricity price paddy period
Battery charges, and generation of electricity by new energy is assisted using accumulator in the electricity price peak period, by Yu electricity Shang while meeting user load demand
Net, the new energy are solar energy, and generation mode is photovoltaic generation, and accumulator composition light storage hair is used in photovoltaic power generation apparatus
Electric system.
Accumulator uses ferric phosphate lithium cell, capacity to meet resident peak period power demand, by electric bicycle, newly
The on-vehicle battery of energy automobile is added family's light as energy storage device and stores up electricity generation system so that electric energy application mode diversification, drop
Low accumulator cost of investment.
It should include central control unit, voltage and current sampling unit, timing controlled list that smart home light, which stores up electricity generation system,
Member, the central control unit predict that the curve that photovoltaic generation power changes over time, record load are used according to special algorithm
Data make it match photovoltaic generation prediction curve according to the run the period of data reasonable arrangement load in second day, are stored to reduce
Battery discharge depth extends battery；The voltage and current feedback signal judges photovoltaic generation power and load work(
The magnitude relationship of rate loads such as washing machine, dish-washing machine, electric heater as the condition of operating mode switching.
The residence of resident executes paddy valence, 6:00 AM to 10 points of execution at night at 10 points to next day 6:00 AM at night
Peak valence；Photovoltaic subsidy is executed according to remaining electricity online of generating power for their own use, including local coal-fired mark post rate for incorporation into the power network, public subsidies and area
Subsidy, wherein regional subsidy execute 5 years, and public subsidies execute 20 years；The condition that sales rate of electricity and subsidy switch as operating mode.
For self-contained flat resident family, roof belongs to communal facility, and space and neighborhood relationship, peace are safeguarded not influencing communal facility
Under conditions of all risk insurance barrier, limited area is installed and used, general family is advisable to install 3-5 kilowatts (roof area 25-50m2).It is right
In only room (such as villa) resident family, in the case where photovoltaic scale is enough, construction charging pile can be used and sold in a manner of fast charge
The strategy of extra electricity.
Three kinds of operating conditions specifically include：It is incorporated into the power networks, energy flows to load and power grid by photovoltaic；Islet operation, energy
It is flowed to and is loaded by accumulator；It is incorporated into the power networks, energy flows to accumulator and load by power grid.Fig. 2 is specific energy control method work
Condition switches.Operating mode 1,2,3, which respectively represents, to be incorporated into the power networks, grid side converter inversion；Islet operation, battery powered；It is incorporated into the power networks, net
Side converter rectification.PPVFor photovoltaic generation power, PLFor bearing power, SOC (State of Charge) represents battery charge shape
State.Switching condition between operating mode is the magnitude relationship and time factor of photovoltaic generation power and bearing power.In the paddy period
(at night 10 points to next day 6:00 AM) are run with operating mode 3, and power grid powering load, grid side converter rectification is filled to accumulator
Electricity avoids battery over-discharge, is conducive to extend the service life of battery.After 6:00 AM, operating mode 2 is switched to by operating mode 3,
Islet operation, by accumulator auxiliary power supply.If P at this timePV> PL, then operating mode 1 is switched to by operating mode 2, grid side converter inversion will
The extra electricity online that light-preserved system is sent out.If PPV< PL, then operating mode 2 switched to by operating mode 1, by accumulator auxiliary power supply.Evening
After upper 10 points, operating mode 3 is switched to by operating mode 2, is charged a battery.It so moves in circles, constantly records related data, such as
Photovoltaic generation power curve carries out more accurate prediction using gray prediction and Markov model, improve system precision and
Profit.
The calculation for carrying out a specific example below, to illustrate the economy of the energy control method.With Shanghai City Minxing
For the resident of area family, photovoltaic installed capacity is PPV=4kW, photovoltaic module initial outlay cost is about 35000 yuan, and theory makes
With the time limit 25 years, do not consider that it is C that day investment is folded to when the time value of moneyPV=3.8 yuan/day.Accumulator uses two pieces
48V60Ah ferric phosphate lithium cells, about 6000 yuan of cost, about 1500 (capacity attenuations of cycle life in the case of 100% depth of discharge
To 80%).Charge and discharge in two days are primary, then lithium battery group service life is 8 years, and it is C to be folded to day investmentbat=2 yuan/day.The use
Family per day electricity consumption about 7kWh, electricity consumption W when peakpeak=5kWh, peak period are averaged electric power 300W, year electricity consumption exist
Within 3120kWh, therefore time-of-use tariffs are respectively Cpeak=0.617 yuan/kWh, Cvalley=0.307 yuan/kWh.The remaining upper C of electricitygrid
=0.7855 yuan/kilowatt hour, public subsidies Cnation=0.37 yuan/kilowatt hour, regional subsidy Clocal=0.4 yuan/kilowatt
When.
Photovoltaic generating system is calculated separately, traditional light stores up electricity generation system and using energy control method proposed by the present invention
Light stores up the day income of electricity generation system.
Family utilizes the Weather information of Internet of things intelligent home system acquisition second day every night with light electricity storage station, according to allusion quotation
Type illumination curve and Weather information generate generated energy prediction curve.Meanwhile it being adjusted according to smart home routine use situation data
Tunable load, the run the period of second day tunable load of reasonable arrangement make it match photovoltaic generation prediction curve, and then control evening
Between battery discharging depth charged to accumulator with paddy electricity valence at night after 10 points.Record second day actual use situation with
The deviation of prediction curve and service condition optimizes prediction algorithm using prediction models such as gray prediction or Markovs,
To reach the maximized purpose of economy.In addition to this, accumulator can be by the accumulator joint group in electric vehicle in family
At.
In the case where photovoltaic scale is enough, construction charging pile can be used and sell extra electricity in a manner of fast charge.From length
From the point of view of remote development, photovoltaic power generation apparatus alleviates fossil fuel crisis increasingly in short supply, will not generate pollutant, can be quantified as
Environmental gain.
For control method proposed by the present invention after considering time factor, the priority of power supply is no longer photovoltaic, battery, electricity
Net, but actively selection is powered by power grid in electricity price low-valley interval, the i.e. state-of-charge of battery be no longer classified as change working according to
According to the service life of battery can be conducive to extend to avoid battery over-discharge.Meanwhile reducing a kind of operating mode, make the control be
System is more succinct.This energy control method operating mode is clear, and switching condition is simple.The energy storage effect of accumulator has been given full play to,
Application mode is various, and economy is high.Record uses data, can match the use habit of user personalizedly, enhances intelligent family
The comfort level and experience sense in residence.Appropriate charge and discharge play maintenance action to battery, also reduce the impact to power grid, play peak clipping
The proportionality action of Fill valley.
Using energy control method proposed by the present invention, day profit be given by：
Profit=Wpeak·(Cpeak+Cnation+Clocal)+(∫PPVdt-∫PLdt)(Cgrid+Clocal)-(Wpeak-∫
PLdt)·Cvalley-CPV-Cbat(1)
Profit'=Wpeak·(Cpeak+Cnation)+(∫PPVdt-∫PLdt)·Cgrid-(Wpeak-∫PLdt)·Cvalley-
CPV-Cbat (2)
Profit represents light storage electricity generation system day profit in 5 years in formula, and light stores up electricity generation system day after profit' is represented 5 years
Profit, WpeakElectricity consumption when representing user peak, CpeakRepresent peak period electricity price, CvalleyRepresent paddy period electricity price, CnationRepresent state
Family's subsidy, ClocalRepresent regional subsidy, CgridRepresent photovoltaic remaining electricity online electricity price, CPVRepresent photovoltaic investment conversion to it is daily at
This, CbatIt represents accumulator investment conversion and arrives daily cost, PPVRepresent photovoltaic installed capacity, PLBearing power is represented, t is represented
One day effective sunshine hourage, ∫ PPVDt represents photovoltaic power generation quantity, ∫ P within illumination effective timeLDt represents effective in illumination
Electricity consumption is loaded in time.
For photovoltaic generating system, due to not having accumulator, two to be only incorporated into the power networks kind operating mode is exported in PV
Electricity is wanted to power grid when power is less than bearing power, is fed to power grid when PV output powers are more than bearing power.Day, profit was by (3)
(4) two formulas provide：
Profit=∫ PLdt·(Cpeak+Cnation+Clocal)+(∫PPVdt-∫PLdt)·(Cgrid+Clocal)-CPV (3)
Profit'=∫ PLdt·(Cpeak+Cnation)+(∫PPVdt-∫PLdt)·Cgrid-CPV (4)
The day profit of traditional light storage electricity generation system is provided by (5) (6) two formula：
It has been provided by (1) (2) two formula using the light storage electricity generation system day profit of energy control method proposed by the present invention.
By can be calculated following result：Photovoltaic system day yield curve traditional light-preserved system day yield curve it
On, illustrate that the economy of photovoltaic system can not necessarily improve after accumulator is added, the reason is that when photovoltaic generation scale is smaller, store
Battery cost accounts for relatively high in entire cost of investment, and if do not used energy control method appropriate, economy is not as good as having
The photovoltaic system of accumulator.And after using optimized energy control method, the day profit that light-preserved system generates significantly carries
Height is higher than other two ways.Number is 3.81 hours when the average daily peak value irradiation every year of Shanghai, obtains photovoltaic system in 5 years, passes
System light-preserved system, using the average day profit of the light-preserved system of optimization energy control method be respectively 14.50 yuan, 13.27 yuan,
Average day profit is respectively 8.40 yuan, 7.18 yuan, 9.02 yuan after 16.66 yuan, 5 years.Accumulator plays cut paddy in the power system
The effect at flat peak, improves power supply quality, strengthens the stability and reliability of system work, while improving economy.It is logical
It crosses and establishes charging pile and sell the extra electricity that accumulator stores, the income of photovoltaic generation can be maximized, while ensureing 5
Income after year remains to maintain higher level.
Based on above-described embodiment, the configuration of the present invention is simple, compared with conventional energy control method, the energy hole side of proposition
25% power generation profit improvement may be implemented in method.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the absence of conflict, the feature in embodiments herein and embodiment can arbitrary phase
Mutually combination.
Claims (5)
1. a kind of energy control method for smart home light storage electricity generation system, it is characterised in that：It is carried out for living in
The area of time-of-use tariffs policy and the resident for being equipped with intelligent domestic system increase electricity consumption in the electricity price paddy period and are used for
Accumulator charges, and generation of electricity by new energy is assisted using accumulator in the electricity price peak period, by remaining electricity while meeting user load demand
Online, the new energy are solar energy, and generation mode is photovoltaic generation, are stored up using accumulator composition light in photovoltaic power generation apparatus
Electricity generation system.
2. a kind of energy control method for smart home light storage electricity generation system according to claim 1, feature exist
In：The accumulator uses ferric phosphate lithium cell, capacity to meet resident peak period power demand, by electric bicycle, newly
The on-vehicle battery of energy automobile is added family's light as energy storage device and stores up electricity generation system so that electric energy application mode diversification, drop
Low accumulator cost of investment.
3. a kind of energy control method for smart home light storage electricity generation system according to claim 1, feature exist
In：The light storage electricity generation system includes three kinds of operating conditions, is specifically included：It is incorporated into the power networks, energy flows to load and electricity by photovoltaic
Net；Islet operation, energy are flowed to by accumulator and are loaded；It is incorporated into the power networks, energy flows to accumulator and load by power grid.
4. a kind of energy control method for smart home light storage electricity generation system according to claim 1, feature exist
In：The smart home light storage electricity generation system should include central control unit, voltage and current sampling unit, timing controlled list
Member, the timing control unit record time change and judge peak interval of time, and the central control unit is according to special algorithm
The curve that prediction photovoltaic generation power changes over time, record load use data, are loaded within second day according to data reasonable arrangement
Run the period, so that its is matched photovoltaic generation prediction curve, to reduce battery discharging depth, extend battery；
The voltage and current feedback signal judges the magnitude relationship of photovoltaic generation power and bearing power, the item as operating mode switching
Part.
5. a kind of energy control method for smart home light storage electricity generation system according to claim 1, feature exist
In：The residence of the resident executes paddy valence, 6:00 AM to 10 points of execution at night at 10 points to next day 6:00 AM at night
Peak valence；Photovoltaic subsidy is executed according to remaining electricity online of generating power for their own use, including local coal-fired mark post rate for incorporation into the power network, public subsidies and area
Subsidy, wherein regional subsidy execute 5 years, and public subsidies execute 20 years；The condition that sales rate of electricity and subsidy switch as operating mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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