CN102882237B - Intelligent energy storage machine and operating method thereof - Google Patents
Intelligent energy storage machine and operating method thereof Download PDFInfo
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- CN102882237B CN102882237B CN201110198563.2A CN201110198563A CN102882237B CN 102882237 B CN102882237 B CN 102882237B CN 201110198563 A CN201110198563 A CN 201110198563A CN 102882237 B CN102882237 B CN 102882237B
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- 238000004146 energy storage Methods 0.000 title claims abstract description 160
- 238000011017 operating method Methods 0.000 title abstract 2
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- 230000005611 electricity Effects 0.000 claims description 44
- 230000003595 spectral effect Effects 0.000 claims description 25
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000004891 communication Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 16
- 229910052744 lithium Inorganic materials 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 238000003860 storage Methods 0.000 claims description 9
- 239000005955 Ferric phosphate Substances 0.000 claims description 8
- 229940032958 ferric phosphate Drugs 0.000 claims description 8
- 229910000399 iron(III) phosphate Inorganic materials 0.000 claims description 8
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 230000005693 optoelectronics Effects 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 230000003993 interaction Effects 0.000 claims description 2
- 238000010248 power generation Methods 0.000 abstract description 3
- 230000000295 complement effect Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 19
- 238000013461 design Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000033228 biological regulation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 229910052493 LiFePO4 Inorganic materials 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- QHGJSLXSVXVKHZ-UHFFFAOYSA-N dilithium;dioxido(dioxo)manganese Chemical compound [Li+].[Li+].[O-][Mn]([O-])(=O)=O QHGJSLXSVXVKHZ-UHFFFAOYSA-N 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 230000006386 memory function Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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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
- 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
- Y02B10/70—Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies
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Abstract
The invention provides an intelligent energy storage machine and an operating method thereof. The intelligent energy storage machine is used in a large scale, so that the electrical load of a power grid is relatively stable, the electrical load for the daytime and night is balanced, and the peak load shifting function is realized; and the energy storage machine comprises a miniature wind power and photovoltaic power generation input interface, and a new energy access power system is easily realized. The intelligent energy storage machine comprises a cabinet shell, a control system, an energy device and an energy storage device, wherein the energy device is used for providing energy for the load and comprises a solar energy device, a wind energy device and a mains supply; the electric energy generated by the solar energy device and the wind energy device is stored in the energy storage device; the energy storage device is an energy storage battery pack; the energy storage battery pack is used for storing the energy generated by the solar energy device and the wind energy device and the energy charged by the mains supply; and the control system comprises a wind and photovoltaic complementary controller, a grid-connected inverter, an off-grid inverter, a programmable logic controller (PLC), a battery management system and a bidirectional intelligent electric meter.
Description
Technical field
The invention belongs to the technical field of household electrical appliance, relate to Intelligent energy storage machine and method of work thereof, Intelligent energy storage machine and the method for work thereof espespecially for family, public place, used.
Background technology
Along with the development of economy and modern industry, the require day by day of society to electric energy, power consumer is to power supply quality, also more and more higher for the requirement of electrical stability.Each large electrical network just transmits electric power in each industrial and commercial resident family industry of giving of high load capacity, but peak of power consumption is all more by day, and night, electricity consumption reduced substantially, the peak-valley difference of each large electrical network is increased increasingly, and power station can not quit work.Therefore, at night, easily cause the waste of electric power resource.And wind-force, optical energy power are easily subject to the impact of the natural causes such as weather, cause voltage and power extremely unstable.In addition, along with power station (frequently start-stop) power generation and the country restriction to macroeconomic regulation and control and high energy-consuming enterprises successively of the large and super-critical generating set of in recent years building and nuclear energy power generation unit, the problem that lacks peak regulation means during low ebb will be more outstanding.
Nearly twenty or thirty is over year, energy storage technology has had development faster, conventionally with various ways such as the energy storage of drawing water, ice-reserving energy storage, battery energy storage, flywheel energy storages, occur, wherein hydroenergy storage station has certain use scale, the energy storage of drawing water is more in national installed capacitys such as Japan and the United States, meaning, moral, methods, but because its scale of investment is large, be subject to geographical environment restriction, to reasons such as water resources pollute, development is restricted.Battery energy storage technology is the novel energy-storing technology of development recent years, MW level industry energy-accumulating power station has use at home and abroad, but industrial energy-accumulating power station be take Utilities Electric Co. as construction unit, mainly solve the electric power allotment of whole electrical network, ignoring Liao Yi family is the small electrical energy storage demand of unit, and large scale industry energy-accumulating power station is difficult to solve household electricity problem.Intelligent energy storage equipment solved electric network night waste, by having helped peak load regulation network, solve wind energy and optical energy power cannot be grid-connected etc. problem, be suitable for Small And Medium Capacity electric energy energy storage occasion, as occasions such as family, villa, hospital, farm, island, outdoor temporary sources.Intelligent energy storage device can be used as stand-by power supply simultaneously, and when mains failure, Intelligent energy storage equipment provides power supply output; And realize and using electricity in off-peak hours, power cost saving expenditure.The technical scheme still openly in prior art with the Intelligent energy storage equipment of ideal effect.
In the prior art, majority only relates to standby power supply apparatus, or single honourable energy storage, for example: just adopt lead-acid battery to make uninterrupted power supply, there is no honourable energy storage, two-way power transmission function.Still there is the following problem that needs solution: 1, the short problem of domestic secondary energy electrification energy storage battery cycle life; 2, family generating has when more than needed and can not grid-connectedly sell electric problem; 3, the problem that household electricity metering is useless and intelligent appliance control is docked; 4, solve the problem that cannot enjoy low ebb electricity price.
Summary of the invention
The object of the present invention is to provide a kind of Intelligent energy storage machine and method of work thereof, use on a large scale family's energy storage device can make electrical network power load relatively stable, balance is power load round the clock, realizes the effect of " peak load shifting "; And there are small wind, photovoltaic generation input interface, easily realize new forms of energy access electric power system.
The present invention is achieved through the following technical solutions:
Intelligent energy storage machine, includes cabinet shell, control system, energy source device and energy storage device: described energy source device is used to load that the energy is provided; Wherein:
Described energy source device includes spectral energy unit, wind energy plant and civil power;
Described spectral energy unit is used for collecting solar energy, and the Conversion of Energy comprising in sunlight, is electric energy by opto-electronic conversion; Described wind energy plant is converted to electric energy for the mechanical energy that wind-force is comprised; The electrical power storage that spectral energy unit and wind energy plant produce is in energy storage device;
Described energy storage device is a kind of energy-storage battery group, and described energy-storage battery group is for storing spectral energy unit and the energy of wind energy plant generation and the commercial power charged energy;
Described control system includes: wind/light complementation controller, combining inverter, from net inverter, PLC controller, battery management system and Bidirectional intelligent kilowatt-hour meter;
Described wind/light complementation controller is a kind of energy conversion device, described spectral energy unit and wind energy plant are controlled and are adjusted by wind/light complementation controller and the DC power supply of output voltage stabilization is charged to energy-storage battery group, electrical power storage in energy-storage battery group;
Described combining inverter, for detecting in real time the parameter of civil power, is realized the energy inversion output of energy-storage battery group is fed back to civil power;
Described from net inverter (possessing UPS inverter function) for realizing direct current to the conversion and control of alternating current, when civil power is stopped power supply, from net inverter, being switched to fast energy-storage battery group is load supplying power supply, ensures that load electricity consumption is uninterrupted;
Described PLC controller, that Intelligent energy storage machine all modules is coordinated the core control section of controlling, mode with communication connects modules, according to battery parameter, setup parameter, the output demand of monitoring, and the internal control instruction of formulating and exporting to all modules;
Described battery management system, for the protection of with control described energy-storage battery group; Parameter and the characteristic point temperature of battery management system Real-Time Monitoring, supervision cell, battery management system calculates battery dump energy according to Monitoring Data simultaneously, for monitoring result, exports corresponding control and management pattern;
Described Bidirectional intelligent kilowatt-hour meter is for electric energy bidirectional measuring, simultaneously can tou power price charging;
Described energy-storage battery group, wind/light complementation controller, combining inverter, from net inverter, PLC controller, battery management system and Bidirectional intelligent kilowatt-hour meter, be all arranged on cabinet shell or in inner chamber.
The method of work of Intelligent energy storage machine, wherein, comprises the steps:
1. when civil power is in normal condition, the capacity of energy-storage battery group is less than electric discharge lower limit, and current electricity price at a low ebb is during the period, and control system instruction civil power charges to energy-storage battery group, energy-storage battery pool-size reaches the upper limit of setting after commercial power charged, stops commercial power charged;
2. when civil power is in normal condition, the capacity of energy-storage battery group is greater than electric discharge lower limit and is not more than honourable charging upper limit, simultaneously current in peak electricity tariff during the period, spectral energy unit, wind energy plant charge to energy-storage battery group, disconnect mains supply simultaneously, Intelligent energy storage machine inversion output, for load provides power supply, reduce electric cost expenditure;
3. when civil power is in normal condition, the capacity of energy-storage battery group is greater than sets the inversion upper limit, and current in the peak electricity tariff period, the output of control system instruction combining inverter, and " selling electricity " gives electrical network.
Beneficial effect of the present invention is as follows:
Intelligent energy storage machine of the present invention, first as family's energy storage device, use, because energy source device includes spectral energy unit, wind energy plant and civil power, control system includes: wind/light complementation controller, combining inverter, from net inverter, PLC controller, battery management system and Bidirectional intelligent kilowatt-hour meter; Extensive this Intelligent energy storage machine that uses can make electrical network power load relatively stable, and balance is power load round the clock, realizes the effect of " peak load shifting ".Crucial place, as base station, data center, hospital-based outpatient emergency room, Control of Power Plant chamber etc. can meet the function of back-up source, is guaranteed to system power supply is stable, equipment is run well power supply safety guarantee is provided.When mains failure, family's energy storage device provides power supply output, can meet the interim power supply of 1-2 days.Intelligent energy storage machine of the present invention increases grid-connected feeding function, realizes small distributed energy electricity generation system; Possess electric energy bidirectional measuring function, possess the functions such as tou power price charging simultaneously.Also possesses following expanded function: have small wind, photovoltaic generation input interface, easily realizes new forms of energy access electric power system simultaneously; Equipment has communication interface, can realize intelligent appliance and control function; Modular designs, System Expansion is simple and convenient.Concrete advantage is described below:
(1), stand-by power supply function: when city's electrical anomaly or while having a power failure, family's accumulator moment is switched to powered battery output, for load provides reliable source of power.
(2), realize and using electricity in off-peak hours, power cost saving expenditure: in the area of carrying out " time-of-use tariffs ", family's accumulator can be realized " deposit electricity during paddy, export during peak ", reaches the effect of consuming all the time low-price electricity, the burden of electricity consumption while simultaneously alleviating electrical network peak.
(3), reserved small wind, photovoltaic generation input interface, easily realize new forms of energy access electric power system, the few electric cost expenditure of family.
(4), in the area that allows family to the grid-connected feed of electrical network, can match grid-connected accessory, when wind-light-electricity secondary energy sources are when supply exceed demand, can, by family's accumulator to the grid-connected feed of electrical network, realize and sell electric income.
(5), family's accumulator possesses the functions such as electricity charge bidirectional measuring function, intelligent appliance control.
(6), modular designs, System Expansion is simple and convenient, after dilatation, can meet large volume output occasion and use.
Aspect economic benefit main manifestations when Intelligent energy storage machine is used in family is following:
One, realize and using electricity in off-peak hours, power cost saving expenditure.If the time-of-use tariffs of realization, calculate according to current industrial time-of-use tariffs, use the electricity charge of the family expenses energy storage device moon to save and be calculated as follows: (take Zhuhai as example)
When low ebb electricity price is 0.34 yuan/degree, peak at present, electricity price is that 1.08 yuan/degree, middle nuclear family power consumption in January are considered by 150 degree, can power cost saving=(electricity price-low ebb electricity price during peak) * month power consumption=(1.08-0.34) * 150=111 unit, 1 year power cost saving: 111*12=1332 unit.
Two, equipment output is to supply with power load with battery electric quantity inversion output, and the damage of avoiding household electrical appliances to press fluctuation to cause household electrical appliances because of mains-supplied guarantees that household electrical appliance supply power voltage stability is high, extends family's electric life.
Three, the function of stand-by power supply, during mains failure, Intelligent energy storage machine can be realized uninterrupted power supply function, guarantees that electricity consumption is normal, meets the quality requirements of family expenses power supply.
Four, customizable increase wind light generation memory function, realizes the access of secondary energy sources, can make household electricity reach zero cost (if electric weight is unnecessary, can feedback grid, reach negative cost).
Five, customizable intelligent appliance is controlled function, realizes the Based Intelligent Control such as household electrical appliances.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of Intelligent energy storage machine of the present invention;
Fig. 2 is the side-looking structural representation of Intelligent energy storage machine of the present invention;
Fig. 3 is the control principle schematic diagram of Intelligent energy storage machine of the present invention;
Fig. 4 is the connection principle schematic diagram of Intelligent energy storage machine of the present invention;
Fig. 5 is the method for work flow chart of Intelligent energy storage machine of the present invention;
Fig. 6 is the remote monitoring principle schematic of Intelligent energy storage machine of the present invention;
Fig. 7 is the energy-storage battery monomer structure schematic diagram of Intelligent energy storage machine of the present invention;
Fig. 8 is that the energy-storage battery group of Intelligent energy storage machine of the present invention discharges and recharges battery capacity/cycle life detection curve figure;
Fig. 9 is the confession electrical schematic of Intelligent energy storage machine of the present invention;
Figure 10 is the battery management system connection principle schematic diagram of Intelligent energy storage machine of the present invention.
Description of reference numerals:
1, energy-storage battery group, 2, touch-screen, 3, combining inverter, 4, from net inverter, 5, PLC controller, 6, battery management system, 7, Bidirectional intelligent kilowatt-hour meter, 8, wind/light complementation controller, 9, low-voltage distribution device, 10, cabinet shell, 11, charger, 12, remote monitoring computer, 13, switch, 14, shunt, 15, diode.
Embodiment
Ask for an interview shown in Fig. 1, Fig. 2, Fig. 3, the invention discloses a kind of Intelligent energy storage machine, include cabinet shell 10, control system, energy source device and energy storage device: described energy source device is used to load that the energy is provided; Wherein:
Described energy source device includes spectral energy unit, wind energy plant and civil power;
Described spectral energy unit is used for collecting solar energy, and the Conversion of Energy comprising in sunlight, is electric energy by opto-electronic conversion; Described wind energy plant is converted to electric energy for the mechanical energy that wind-force is comprised; The electrical power storage that spectral energy unit and wind energy plant produce is in energy storage device;
Described energy storage device is a kind of energy-storage battery group 1, and described energy-storage battery group 1 is for storing spectral energy unit and the energy of wind energy plant generation and the commercial power charged energy;
Described control system includes: wind/light complementation controller 8, combining inverter 3, from net inverter 4, PLC controller 5, battery management system 6 and Bidirectional intelligent kilowatt-hour meter 7;
Described wind/light complementation controller 8 is a kind of energy conversion devices, described spectral energy unit and wind energy plant are controlled and are adjusted by wind/light complementation controller and the DC power supply of output voltage stabilization is charged to energy-storage battery group, electrical power storage in energy-storage battery group;
Described combining inverter 3, for detecting in real time the parameter of civil power, is realized the energy inversion output of energy-storage battery group is fed back to civil power;
Described from net inverter 4 for realizing direct current to the conversion and control of alternating current, when civil power is stopped power supply, from net inverter, being switched to fast energy-storage battery group is load supplying power supply, ensures that load electricity consumption is uninterrupted;
Described PLC controller 5, that Intelligent energy storage machine all modules is coordinated the core control section of controlling, mode with communication connects modules, according to battery parameter, setup parameter, the output demand of monitoring, and the internal control instruction of formulating and exporting to all modules;
Described battery management system 6, for the protection of with control described energy-storage battery group; Parameter and the characteristic point temperature of battery management system Real-Time Monitoring, supervision cell, battery management system calculates battery dump energy according to Monitoring Data simultaneously, for monitoring result, exports corresponding control and management pattern;
Described Bidirectional intelligent kilowatt-hour meter 7 is for electric energy bidirectional measuring, simultaneously can tou power price charging;
Described energy-storage battery group 1, wind/light complementation controller 8, combining inverter 3, from net inverter 4, PLC controller 5, battery management system 6 and Bidirectional intelligent kilowatt-hour meter 7, be all arranged on cabinet shell 10 or in inner chamber.
The front of described cabinet shell 10 is provided with touch-screen 2, for showing each parameter situation of Intelligent energy storage machine and as human-computer interaction input port.
Described control system includes: low-voltage distribution device 9 and charger 11.
As Fig. 4, Bidirectional intelligent kilowatt-hour meter 7 is electrically connected to by switch QFOYu city, and whether auxiliary relay KA20 connects mains supply, normal for detection of civil power, and information is sent to PLC controller; Charger 11 one end connect N line and the L1 line of civil power, and the other end connects DC bus, is provided with protection switch QF1 and controllable switch KA1 on the line between the L1 line of charger 11 and civil power; Combining inverter 3 one end connect N line and the L1 line of civil power, and the other end connects DC bus, is provided with protection switch QF2 and controllable switch KA2 on the line between the L1 line of combining inverter 3 and civil power; The N line and the L1 line that from net inverter 4 one end, connect civil power, the other end connects DC bus, on the line between the L1 line of net inverter 4 and civil power, is provided with protection switch QF3, from net inverter 4, has outlet line N10 and L10; The two ends of energy-storage battery group 1 connect respectively electrode line and the negative line of DC bus, and centre is provided with the shunt 14 that can detect direct current; The two ends of wind/light complementation controller 8 connect respectively electrode line and the negative line of DC bus, and centre is provided with the diode 15 of guaranteeing electric current one-way flow; Wind/light complementation controller 8 has spectral energy unit direct current input interface and wind energy plant three-phase alternating current input interface; Civil power is by N2 line and L2 alignment load out-put supply.
As Fig. 6, remote monitoring computer 12 is apolegamy parts, described Intelligent energy storage machine is reserved ethernet communication interface, can access home network or link Internet and realize remote monitoring and energy consumption statistic, wherein PLC controller 5 includes two CPU main frames and a plurality of expansion module, in Ethernet TCP/IP mode, connect and realize exchanges data by switch 13 each other, remote monitoring computer 12 is with TCP/IP and PLC communication, PLC controller 5 and battery management system 6, combining inverter 3, between touch-screen 2 and Bidirectional intelligent kilowatt-hour meter 7, with Free communication modes, realize exchanges data, communication interface is RS485.
Described energy-storage battery group 1 includes one or more groups ferric phosphate lithium cell or lithium titanate battery.If Fig. 7 is ferric phosphate lithium cell monomer shape assumption diagram.Energy-storage battery group 1 adopts secondary cell---ferric phosphate lithium cell (may select lithium titanate battery when lithium titanate battery technology maturation), energy storage medium as whole system, the secondary cells such as the relative lead-acid battery of ferric phosphate lithium cell, Ni-MH battery, lithium manganate battery, at aspects such as security performance, cycle life, energy densities, there is incontrovertible advantage, in occasions such as existing wind, light power generating system, standby DC power supply, ferric phosphate lithium cell has the trend that replaces other batteries.This battery can high rate charge-discharge simultaneously, meets in family's use procedure the features such as load saltus step, and weak point price is higher, and long-range consideration is used ferric phosphate lithium cell cost performance higher.Ferric phosphate lithium cell adopts modular designs, and individual module voltage is 3.2V, and capacity 100AH～460AH is adjustable, needs a plurality of modules to form battery pack through connection in series-parallel in use procedure.
Fig. 8 is 3.2V, and 460AH LiFePO4 modular battery and circulating battery performance plot, can find out the curved line relation between battery capacity and cycle-index, and when circulating battery number of times increases, capacity slightly reduces.
As Fig. 9, civil power N2 line, L2 line and by selector switch SA1, select between outlet line N10, the L10 of net inverter 4, standby each other, and for PLC controller 5, battery management system 6 and load and power supply is provided.
As Figure 10, described battery management system 6 includes signal gathering unit, rectification unit and communication unit; Signal gathering unit is by the signal of B+, B1 to B20 port processing energy-storage battery group, by T1+, T1-, T2+, T2-port processing temperature signal; According to the number of battery, be provided with and be no less than 1 battery acquisition module, can connect at most 126 acquisition modules.
By Fig. 1,2, can be seen, Intelligent energy storage machine of the present utility model is comprised of following major part: energy-storage battery group, touch-screen 2, combining inverter 3, from net inverter 4, PLC controller 5, battery management system 6 (BMS), Bidirectional intelligent kilowatt-hour meter 7, wind light mutual complementing charger 8, low-voltage distribution device 9, cabinet shell 10 etc., partly form, under the management of PLC controller 5, automatically realize buying electricity, generating, storage, electricity consumption, selling that electricity and household appliances are intelligently controlled, the bidirectional measuring of electric energy consumption of family.For realizing above-mentioned functions, product is coordinated the work of each module by software programming, and preferentially to use secondary energy sources, saving power consumption is target, consider use electricity in off-peak hours, the factor such as power backup, Based Intelligent Control.
Each main devices specific explanations is as follows:
Wind/light complementation controller: mainly by wind-light-electricity after over commutation, pressure regulation etc. are processed, electric energy is saved in energy-storage battery with galvanic form, operation principle is as follows: 1, wind-driven generator produces unsettled alternating current under wind-force effect, through arrangement diode arrangement, capacitor filtering, DC voltage stabilizing processing etc., the direct voltage of stable output, this direct voltage connects battery, when the battery power shortage time, rely on wind-force to charge the battery; 2 luminous energy photovoltaic panel produce unsettled direct current, through DC/DC voltage stabilizing, process, and output connects battery, when the battery power shortage time, rely on solar panels to charge the battery.For guaranteeing the aspects such as efficiency, fail safe of system, system also needs to increase the auxiliary circuits such as brake protection, unloading circuit, warning indication.
Combining inverter: mainly the energy in energy-storage battery is outputed to electrical network, due to battery storage be direct current, pass through contravariant equipment, obtain the alternating current identical with mains frequency, voltage, phase angle; The control element of combining inverter is MCU control system, and power device is IGBT device, and auxiliary circuit includes boosting unit, filter unit, detecting unit, communication unit and alarm unit.Small-power is generally single-phase AC220V output, high-powerly accomplishes 3AC output, and product design reserves power regulation functions, possess " isolated island " protects, possesses programmable switch shutdown function.
From net inverter: with the maximum difference of combining inverter be can depart from electrical network to work alone, effect in Intelligent energy storage device is: the AC power of stable output, meet the use of load, equipment input is inputted by exchanging input and dc-battery, when civil power is normal at ordinary times, exchanging input processes through voltage stabilizing, filtering, directly output to load end, when municipal power failure (or peak of power consumption), moment is switched to powered battery, switching time≤10ms guarantees that rear end electrical equipment continues normal work, meets the function of uninterrupted power supply simultaneously.
Bidirectional intelligent kilowatt-hour meter: adopt large scale integrated circuit, ripe software algorithm, low power dissipation design and SMT technique, rely on the world, Domestic Correlative Standard to design and produce, instrument possesses metering, demonstration, communication, measuring ability, accurately the forward and reverse active energy of time-sharing measurement accurately detects the parameters such as voltage, electric current, active power, power factor, frequency simultaneously in real time, can extensive use low-voltage electric energy time-sharing measurement.
Touch-screen: adopt the 4 wire resistance type graphic control panels that use in a large number on present market, this touch-screen meets industry spot to be used, software programming adopts special programming software editing platform, screen touch-control is sensitive, resolution is high, memory capacity 128MB, communication interface is complete, can meet and control and monitoring Presentation Function.
PLC controller: PLC is that modules is coordinated the core control section of controlling, by software programming, in the mode of RS485 communication, connect a module, according to battery parameter, setup parameter, the output demand of monitoring, take low-carbon environment-friendly, reduce expenses as target, formulate inner control strategy.
Battery management system BMS: in order to improve the utilance of battery, extend the life of a cell, lithium battery need to increase lithium battery management system, battery management system Real-Time Monitoring, monitor the voltage of cell, temperature, electric current, for monitoring result output is corresponding, control simultaneously, as heat management, balanced management, make in battery operated rational temperature range, make the capacity of battery strive for storing maximum electric weight, battery consistency is improved, cycle life extends, battery management system calculates battery dump energy according to Monitoring Data simultaneously, participation system is controlled output etc.
The method of work of Intelligent energy storage machine, wherein, comprises the steps:
1. when civil power is in normal condition, the capacity of energy-storage battery group is less than electric discharge lower limit, and current electricity price at a low ebb is during the period, and control system instruction civil power charges to energy-storage battery group, energy-storage battery pool-size reaches the upper limit of setting after commercial power charged, stops commercial power charged;
2. when civil power is in normal condition, the capacity of energy-storage battery group is greater than electric discharge lower limit and is not more than honourable charging upper limit, simultaneously current in peak electricity tariff during the period, spectral energy unit, wind energy plant charge to energy-storage battery group, disconnect mains supply simultaneously, Intelligent energy storage machine inversion output, for load provides power supply, reduce electric cost expenditure;
3. when civil power is in normal condition, the capacity of energy-storage battery group is greater than sets the inversion upper limit, and current in the peak electricity tariff period, the output of control system instruction combining inverter, and " selling electricity " gives electrical network.
As Fig. 5, the method for work of Intelligent energy storage machine, comprises following specific works step:
Step s1: start Intelligent energy storage machine, work starts;
Step s2: judge that civil power, whether in normal condition, enters step s6 in this way, as otherwise enter step s3;
Step s3: judge that energy-storage battery group, whether in low-pressure state, enters step s5 in this way, as otherwise enter step s4;
Step s4: from the work of net inverter, the AC power of stable output, meets the use of household electrical appliance;
Step s5: close Intelligent energy storage machine;
Step s6: judge that energy-storage battery group, whether in low-pressure state, enters step s7 in this way, as otherwise enter step s9;
Step s7: judge that civil power, whether in the paddy electricity period, enters step s8 in this way, as otherwise enter step s9;
Step s8: civil power is the charging of energy-storage battery group, enters step s9;
Step s9: judge that energy-storage battery group, whether in high pressure conditions, enters step s10 in this way, as otherwise enter step s11, step s12 simultaneously;
Step s10: spectral energy unit, wind energy plant stop the charging of energy-storage battery group;
Step s11: spectral energy unit, wind energy plant, to the charging of energy-storage battery group, enter step s9 and again judge;
Step s12: judge that civil power, whether in the peak electricity period, enters step s13 in this way, as otherwise enter step s14;
Step s13: judge that whether energy-storage battery group is in normal condition, enter in this way step s15, s16 simultaneously, as otherwise enter step s14;
Step s14: by mains-supplied;
Step s15: combining inverter outputs to electrical network by the energy in energy-storage battery and sells electricity;
Step s16: energy-storage battery group is load supplying.
Above-mentioned listed specific implementation is nonrestrictive, to one skilled in the art, is not departing from the scope of the invention, and the various modifications and variations of carrying out, all belong to protection scope of the present invention.
Claims (7)
1. Intelligent energy storage machine, includes cabinet shell (10), control system, energy source device and energy storage device: described energy source device is used to load that the energy is provided; It is characterized in that:
Described energy source device includes spectral energy unit, wind energy plant and civil power;
Described spectral energy unit is used for collecting solar energy, and the Conversion of Energy comprising in sunlight, is electric energy by opto-electronic conversion; Described wind energy plant is converted to electric energy for the mechanical energy that wind-force is comprised; The electrical power storage that spectral energy unit and wind energy plant produce is in energy storage device;
Described energy storage device is a kind of energy-storage battery group (1), and described energy-storage battery group (1) is for storing spectral energy unit and the energy of wind energy plant generation and the commercial power charged energy;
Described control system includes: wind/light complementation controller (8), combining inverter (3), from net inverter (4), PLC controller (5), battery management system (6) and Bidirectional intelligent kilowatt-hour meter (7);
Described wind/light complementation controller (8) is a kind of energy conversion device, described spectral energy unit and wind energy plant are controlled and are adjusted by wind/light complementation controller and the DC power supply of output voltage stabilization is charged to energy-storage battery group, electrical power storage in energy-storage battery group;
Described combining inverter (3), for detecting in real time the parameter of civil power, is realized the energy inversion output of energy-storage battery group is fed back to civil power;
Described from net inverter (4) for realizing direct current to the conversion and control of alternating current, when civil power is stopped power supply, from net inverter, being switched to fast energy-storage battery group is load supplying power supply, ensures that load electricity consumption is uninterrupted;
Described PLC controller (5), that Intelligent energy storage machine all modules is coordinated the core control section of controlling, mode with communication connects modules, according to battery parameter, setup parameter, the output demand of monitoring, and the internal control instruction of formulating and exporting to all modules;
Described battery management system (6), for the protection of with control described energy-storage battery group; Parameter and the characteristic point temperature of battery management system Real-Time Monitoring, supervision cell, battery management system calculates battery dump energy according to Monitoring Data simultaneously, for monitoring result, exports corresponding control and management pattern;
Described Bidirectional intelligent kilowatt-hour meter (7) is for electric energy bidirectional measuring, simultaneously can tou power price charging;
Described energy-storage battery group (1), wind/light complementation controller (8), combining inverter (3), from net inverter (4), PLC controller (5), battery management system (6) and Bidirectional intelligent kilowatt-hour meter (7), be all arranged in the upper or inner chamber of cabinet shell (10);
The front of described cabinet shell (10) is provided with touch-screen (2), for showing each parameter situation of Intelligent energy storage machine and as human-computer interaction input port;
Described control system includes: low-voltage distribution device (9) and charger (11);
Described Bidirectional intelligent kilowatt-hour meter (7) is electrically connected to by switch QF0Yu city, and whether auxiliary relay KA20 connects mains supply, normal for detection of civil power, and information is sent to PLC controller; Charger (11) one end connects N line and the L1 line of civil power, and the other end connects DC bus, on the line between charger (11) and the L1 line of civil power, is provided with protection switch QF1 and controllable switch KA1; Combining inverter (3) one end connects N line and the L1 line of civil power, and the other end connects DC bus, on the line between combining inverter (3) and the L1 line of civil power, is provided with protection switch QF2 and controllable switch KA2; From net inverter (4) one end, connect N line and the L1 line of civil power, the other end connects DC bus, on the line between net inverter (4) and the L1 line of civil power, be provided with protection switch QF3, from net inverter (4), there is outlet line N10 and L10; The two ends of energy-storage battery group (1) connect respectively electrode line and the negative line of DC bus, and centre is provided with the shunt (14) that can detect direct current; The two ends of wind/light complementation controller (8) connect respectively electrode line and the negative line of DC bus, and centre is provided with the diode (15) of guaranteeing electric current one-way flow; Wind/light complementation controller (8) has spectral energy unit direct current input interface and wind energy plant three-phase alternating current input interface; Civil power is by N2 line and L2 alignment load out-put supply.
2. Intelligent energy storage machine as claimed in claim 1, it is characterized in that: described Intelligent energy storage machine is reserved ethernet communication interface, can access home network or link Internet and realize remote monitoring and energy consumption statistic, wherein PLC controller (5) includes two CPU main frames and a plurality of expansion module, in Ethernet TCP/IP mode, connect each other and pass through switch (13) and realize exchanges data, remote monitoring computer (12) is with TCP/IP and PLC communication, PLC controller (5) and battery management system (6), combining inverter (3), between touch-screen (2) and Bidirectional intelligent kilowatt-hour meter (7), with Free communication modes, realize exchanges data, communication interface is RS485.
3. Intelligent energy storage machine as claimed in claim 2, is characterized in that: described energy-storage battery group (1) includes one or more groups ferric phosphate lithium cell or lithium titanate battery.
4. Intelligent energy storage machine as claimed in claim 2, it is characterized in that: civil power N2 line, L2 line and by selector switch SA1, select between outlet line N10, the L10 of net inverter (4), standby each other, and be PLC controller (5), battery management system (6) and load power supply is provided.
5. Intelligent energy storage machine as claimed in claim 2, is characterized in that: described battery management system (6) includes signal gathering unit, rectification unit and communication unit; Signal gathering unit is by the signal of B+, B1 to B20 port processing energy-storage battery group, by T1+, T1-, T2+, T2-port processing temperature signal; According to the number of battery, be provided with and be no less than 1 battery acquisition module, can connect at most 126 acquisition modules.
6. the method for work of Intelligent energy storage machine as claimed in claim 1, is characterized in that: comprise the steps:
1. when civil power is in normal condition, the capacity of energy-storage battery group is less than electric discharge lower limit, and current electricity price at a low ebb is during the period, and control system instruction civil power charges to energy-storage battery group, energy-storage battery pool-size reaches the upper limit of setting after commercial power charged, stops commercial power charged;
2. when civil power is in normal condition, the capacity of energy-storage battery group is greater than electric discharge lower limit and is not more than honourable charging upper limit, simultaneously current in peak electricity tariff during the period, spectral energy unit, wind energy plant charge to energy-storage battery group, disconnect mains supply simultaneously, Intelligent energy storage machine inversion output, for load provides power supply, reduce electric cost expenditure;
3. when civil power is in normal condition, the capacity of energy-storage battery group is greater than sets the inversion upper limit, and current in the peak electricity tariff period, the output of control system instruction combining inverter, and " selling electricity " gives electrical network.
7. the method for work of Intelligent energy storage machine as claimed in claim 6, is characterized in that: comprise following specific works step:
Step s1: start Intelligent energy storage machine, work starts;
Step s2: judge that civil power, whether in normal condition, enters step s6 in this way, as otherwise enter step s3;
Step s3: judge that energy-storage battery group, whether in low-pressure state, enters step s5 in this way, as otherwise enter step s4;
Step s4: from the work of net inverter, the AC power of stable output, meets the use of household electrical appliance;
Step s5: close Intelligent energy storage machine;
Step s6: judge that energy-storage battery group, whether in low-pressure state, enters step s7 in this way, as otherwise enter step s9;
Step s7: judge that civil power, whether in the paddy electricity period, enters step s8 in this way, as otherwise enter step s9;
Step s8: civil power is the charging of energy-storage battery group, enters step s9;
Step s9: judge that energy-storage battery group, whether in high pressure conditions, enters step s10 in this way, as otherwise enter step s11, step s12 simultaneously;
Step s10: spectral energy unit, wind energy plant stop the charging of energy-storage battery group;
Step s11: spectral energy unit, wind energy plant, to the charging of energy-storage battery group, enter step s9 and again judge;
Step s12: judge that civil power, whether in the peak electricity period, enters step s13 in this way, as otherwise enter step s14;
Step s13: judge that whether energy-storage battery group is in normal condition, enter in this way step s15, s16 simultaneously, as otherwise enter step s14;
Step s14: by mains-supplied;
Step s15: combining inverter outputs to electrical network by the energy in energy-storage battery and sells electricity;
Step s16: energy-storage battery group is load supplying.
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Address after: 519000 Guangdong province Zhuhai City Sanzao town Jinwan District Jinhu Road No. 16 Patentee after: YINLONG ENERGY Co.,Ltd. Address before: 519000 Guangdong Province, Zhuhai City Road Jida Huajing Les Loges Du Park Hotel Building 1 Patentee before: Zhuhai silver dragon new energy Limited by Share Ltd. |
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| CP03 | Change of name, title or address |