CN208534687U - A kind of hot energy storage --- the wind power balance and stability system of power generation two stage cycle - Google Patents
A kind of hot energy storage --- the wind power balance and stability system of power generation two stage cycle Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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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Abstract
The utility model provides a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle, applied to wind generator system, also comprising using insulation package phase-change thermal storage technology, it is parallel to the distributed power offset electricity generation device of wind power generating set leading-out terminal, the distributed power offset electricity generation device includes heating heat accumulation cycling element, thermal expansion power generation cycle unit and measure-controlling unit, largely latent thermal property will be absorbed from solid-state to liquid using heat-retaining mass, make wind-powered electricity generation energy when wind-force abundance be converted into phase-change thermal energy to be stored, heat reservoir remains at stand-by state, storage density can be increased substantially, reduce heat accumulation range of temperature, improve hot spot transformation efficiency, reduce compensation systems stabilisation cost, be conducive to arrange in wind power plant distributing simultaneously, response speed can be improved, reduce electricity The cost of net spare capacity.
Description
Technical field
The utility model relates to the development and utilization fields of clean energy resource, and in particular to a kind of hot energy storing and electricity generating two stage cycle
Wind power balance and stability system.
Background technique
With the consciousness enhancing utilized to development of clean energy, the scale of wind-power electricity generation also increases increasingly, certainly due to wind-force
The intermittence and fluctuation of body make the irregular variation of wind-power electricity generation power, also increasing to the influence on system operation of power grid, not only make
Wind-driven generator rotary inertia is reduced, and frequency regulation characteristics are deteriorated, and may cause voltage ripple of power network and voltage flicker, is
Maintenance grid power balance and stablize, the spare capacity of reply wind power fluctuation must not be not provided in power grid, these are spare
Capacity at operation of power networks extra cost.
In order to improve the fluctuation of wind power plant power output, researchers are proposed including super capacitor, superconduction skill
The multiple technologies such as art, large-scale battery group battle array, compressed air, fused salt thermal energy energy storage, to realize to wind-power electricity generation power to give
Compensation reaches stable.Wherein, superconducting energy storage technology needs high-temperature superconductor functionization, and super capacitor energy-storage is due to expensive
It is compensated suitable for short-time rating, and not applicable energy compensating, compressed-air energy storage, the energy storage of fused salt thermal energy and energy storage of drawing water are due to reality
When low-response, it is difficult to meet the frequent fluctuating change demand of wind power, large-scale battery group battle array due to regular maintenance cost height,
There are potential secondary pollution environmental issues, and fused salt sensible heat is mainly utilized in previous fused salt thermal energy energy storage technology, not only stores up
Heat density is low, and heat accumulation range of temperature is big, and investment is high, and deposits and restart difficult disadvantage after condensation, furthermore large-scale thermal energy
Energy storage device needs to occupy a large amount of soils, and not only response speed is slow due to place capacity is big, can also control and bring to electric network swim
It is difficult.
Utility model content
For the deficiency in the presence of the prior art, the utility model provides a kind of hot energy storage --- power generation two stage cycle
Distributed wind power balance and stability system, it is therefore an objective to provide a kind of distributed, realize power on the spot in wind power plant
Fluctuate the technology stabilized, the system using substance from solid-state to liquid phase-change in will absorb largely latent thermal properties, fill wind-force
Wind-powered electricity generation energy when sufficient is converted into thermal energy storage, and is maintained at hot stand-by duty, in wind-power electricity generation deficiency, is cut by circuit
It changes, propose storage again takes heat energy power-generating, to compensate the power that wind-power electricity generation is lacked by the abatement of wind.To be cut in wind power plant
The homeostatic mode of peak load reduces heat accumulation and the heat release temperature difference using covert heat-storage technology, with the solution of higher thermal conversion efficiency
Unstable to wind-power electricity generation power compensation, the fluctuation of wind power plant power output is big, it is difficult to meet wind-power electricity generation power frequency
Numerous fluctuating change demand, generate electricity unstable problem.
To achieve the above object, the utility model uses the following technical solution:
A kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle is applied to wind-power electricity generation system
System, the wind generator system includes wind-driven generator and main transformer, also comprising using insulation package phase-change thermal storage technology, and
Be coupled to the distributed power offset electricity generation device of wind power generating set leading-out terminal, the output of wind-driven generator and main transformer it is defeated
Enter connected, the output of main transformer is connected with electricity consumption end or power grid, and the distributed power offset electricity generation device includes heating storage
Thermal cycle unit, thermal expansion power generation cycle unit and measure-controlling unit；
The heating heat accumulation cycling element includes heat-conducting work medium heating furnace, phase-change thermal storage case, shunt reversing valve, evaporation and heat-exchange
Device, bypass line, confluence reversal valve, heat-conducting work medium booster pump, pressurization fluid infusion slot and heat conductive circulation pump；The evaporating heat exchanger
Comprising heated side and evaporation side, the heat-conducting work medium heating furnace by pipeline successively with phase-change thermal storage case, shunt reversing valve, evaporation
Heated side, bypass line, confluence reversal valve and the heat conductive circulation pump of heat exchanger, which connect and return to heat-conducting work medium heating furnace, constitutes envelope
The first circulation circuit closed, heat-conducting work medium is filled in the first circulation circuit, and the side of the heat-conducting work medium heating furnace is logical
The leading-out terminal that conducting wire is connected to wind-driven generator is crossed, the other side of heat-conducting work medium heating furnace is accessed first circulation by pipeline and returned
Road, the phase-change thermal storage case are packaged with solid-liquid phase change heat-retaining mass, and the evaporation side of the evaporating heat exchanger passes through pipeline and heating power
The linkage section of the connection of expansion power generation cycling element, the confluence reversal valve and heat conductive circulation pump is pressurized by pipeline and heat-conducting work medium
One end of pump connects, and the other end of heat-conducting work medium booster pump is connect by pipeline with pressurization fluid infusion slot；
The thermal expansion power generation cycle unit include the evaporation side of evaporating heat exchanger, expanding machine, power compensation generator,
Step-up transformer, Recuperative heat exchanger, condensing heat exchanger, cold source circulating pump, two-way pump, working medium fluid storage tank and expansion working medium are followed
Ring pump, the Recuperative heat exchanger include heated side and cold side, and the condensing heat exchanger includes condensation side and cold side；The steaming
Send out heat exchanger evaporation side by pipeline successively with expanding machine, the cold side of Recuperative heat exchanger, the condensation side of condensing heat exchanger with
And expansion working medium circulating pump connection, the piping connection by the heated side of Recuperative heat exchanger return to the evaporation side structure of evaporating heat exchanger
At closed second circulation circuit, evaporation expansion working medium, the heating of the evaporating heat exchanger are filled in the second circulation circuit
Side is connect by pipeline with heating heat accumulation cycling element, and the expanding machine is connect by mechanical axis with power compensation generator, cold
The cold side of solidifying heat exchanger connect to form cold source pipeline with cold source circulating pump, and cold source working medium is filled in the cold source pipeline, condenses
Heat exchanger is connect by pipeline with two-way pump with the linkage section of expansion working medium circulating pump, and the other end of the two-way pump passes through pipeline
It is connect with working medium fluid storage tank；
The measure-controlling unit include master controller and be connected with master controller wind-driven generator generator terminal detector,
Heat-conducting work medium Heating Furnace Control device, heat conductive circulation pump controller, heat-conducting work medium pressurization pump controller, expansion working medium circulating pump control
Device, two-way pump controller, cold source circulation pump controller, power compensation generator generator terminal detector and power transmission network detector, institute
The output for stating master controller is also connected with the control terminal of power compensation generator, the input of the wind-driven generator generator terminal detector
It is connected with the output of wind-driven generator, the electric parameter letter of the wind-driven generator generator terminal detector acquisition wind-driven generator operation
Number, the heat-conducting work medium Heating Furnace Control device is connected with heat-conducting work medium heating furnace, and the heat conductive circulation pump controller is followed with thermally conductive
Ring pump is connected, and the heat-conducting work medium pressurization pump controller is also connected with heat-conducting work medium booster pump, the expansion working medium circulating pump control
Device processed is connected with expansion working medium circulating pump, and the two-way pump controller is connected with two-way pump control, and the cold source recycles pump controller
It is connected with cold source circulating pump, the input of the power compensation generator generator terminal detector and the output phase of power compensation generator
Even, the input of power transmission network detector is connected with the output of main transformer, and is connected to power grid or electricity consumption end；The power compensation hair
Motor generator terminal detector acquires the electric parameter signal of power compensation generator operation, and the power transmission network detector acquires power transmission network
The electric parameter signal of operation.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model absorbs the physics principle of a large amount of latent heat and the thermodynamics of rankine cycle according to substance solid-liquid phase change
Principle, by wind-power electricity generation fluctuate in some electrical power of power abundance stored in the form of latent heat of phase change, heat reservoir remains at
Hot stand-by duty is re-converted into electric power in wind-power electricity generation deficiency, supplies the wind power vacancy occurred by wind-force decline, leads to
Respectively different loop switchs is crossed, in a manner of peak load shifting, the power that can fast implement wind-power electricity generation output is steady, improves defeated
The safeguard level of firm power out.
By using distributed phase-change thermal storage technology, storage density can be increased substantially, reduces ergastic substances dosage one
As left and right, reduce heat accumulation range of temperature 80%, improve conversion efficiency of thermoelectric, be greatly lowered energy storage facility and construction at
This, analysis shows: when thermal energy conversion efficiency is 16%, the guarantee power of wind-power electricity generation reliability 90% can be made to improve 10%；
In addition, the utility model can make wind power compensating device in 10%~15% ratio of Wind turbines capacity with wind power plant
Unit or generator bus group distribution setting, be conducive to wind power plant on the spot distributing arrange, improve response speed, Ke Yi great
Amplitude reduces the fluctuation of wind power plant overall power, slows down and impacts to power transmission network bring, reduces the cost of reserve capacity of power grid.
Detailed description of the invention
Fig. 1 is the distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle in the utility model embodiment
Structural schematic diagram,
1 is wind-driven generator, and 2 be wind-driven generator generator terminal detector, and 3 be heat-conducting work medium Heating Furnace Control device, and 4 be thermally conductive
Working medium heating furnace, 5 be phase-change thermal storage case, and 6 be shunt reversing valve, and 7 be bypass line, and 8 be evaporating heat exchanger, and 9 be confluence commutation
Valve, 10 pump for heat conductive circulation, and 11 be heat conductive circulation pump controller, and 12 be heat-conducting work medium booster pump, and 13 be heat-conducting work medium booster pump
Controller, 14 be pressurization fluid infusion slot, and 15 be expanding machine, and 16 be power compensation generator, and 17 be Recuperative heat exchanger, and 18 change for condensation
Hot device, 19 be expansion working medium circulating pump, and 20 be expansion working medium circulation pump controller, and 21 be two-way pump, and 22 be two-way pump controller,
23 be working medium fluid storage tank, and 24 be cold source circulating pump, and 25 recycle pump controller for cold source, and 26 be main transformer, and 27 be boosting transformation
Device, 28 be power compensation generator generator terminal detector, and 29 be power transmission network detector, and 30 be master controller.
Specific embodiment
The technical solution in the utility model is further illustrated with reference to the accompanying drawings and embodiments.
As shown in Figure 1, a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle, is applied to wind
Force generating system, the wind generator system includes wind-driven generator and main transformer, also comprising being stored up using insulation package phase transformation
Thermal technology is parallel to the distributed power offset electricity generation device of wind power generating set leading-out terminal, the output of wind-driven generator and master
The input of transformer is connected, and the output of main transformer is connected with electricity consumption end or power grid, the distributed power offset electricity generation device
Include heating heat accumulation cycling element, thermal expansion power generation cycle unit and measure-controlling unit；Heat heat accumulation cycling element and heat
Power expansion power generation cycling element constitutes the two stage cycle of hot energy storing and electricity generating；
The heating heat accumulation cycling element includes heat-conducting work medium heating furnace 4, phase-change thermal storage case 5, shunt reversing valve 6, evaporation
Heat exchanger 8, bypass line 7, confluence reversal valve 9, heat-conducting work medium booster pump 12, pressurization fluid infusion slot 14 and heat conductive circulation pump 10；
The evaporating heat exchanger 8 include heated side and evaporation side, the heat-conducting work medium heating furnace 4 by pipeline successively with phase-change thermal storage case
5, shunt reversing valve 6, the heated side of evaporating heat exchanger 8, bypass line 7, confluence reversal valve 9 and heat conductive circulation pump 10 are connected and are returned
Closed first circulation circuit is constituted to heat-conducting work medium heating furnace 4, is filled with heat-conducting work medium in the first circulation circuit, it is described
The side of heat-conducting work medium heating furnace 4 is connected to the leading-out terminal of wind-driven generator 1 by conducting wire, heat-conducting work medium heating furnace 4 it is another
First circulation circuit is accessed by pipeline in side, and the phase-change thermal storage case 5 is packaged with solid-liquid phase change heat-retaining mass, the evaporation and heat-exchange
The evaporation side of device 8 is connect by pipeline with thermal expansion power generation cycle unit, and the confluence reversal valve 9 and heat conductive circulation pump 10
Linkage section connect by pipeline with one end of heat-conducting work medium booster pump 12, the other end of heat-conducting work medium booster pump 12 pass through pipeline and
The fluid infusion slot 14 that pressurizes connects；The technical characteristic of above-mentioned phase-change thermal storage case 5 can refer to another 201610030612.4 phase of patent inside the Pass
Hold；
The thermal expansion power generation cycle unit includes the evaporation side of evaporating heat exchanger 8, expanding machine 15, power compensation power generation
Machine 16, step-up transformer 27, Recuperative heat exchanger 17, condensing heat exchanger 18, cold source circulating pump 24, two-way pump 21, working medium fluid storage tank
23 and expansion working medium circulating pump 19, the Recuperative heat exchanger 17 include heated side and cold side, the condensing heat exchanger 18 wraps
Containing condensation side and cold side；The evaporation side of the evaporating heat exchanger 8 by pipeline successively with expanding machine, Recuperative heat exchanger 17 it is cold
But side, the condensation side of condensing heat exchanger 18 and expansion working medium circulating pump 19 connect, by the heated side of Recuperative heat exchanger 17
The evaporation side that piping connection returns to evaporating heat exchanger 8 constitutes closed second circulation circuit, fills in the second circulation circuit
The heated side of evaporation expansion working medium, the evaporating heat exchanger 8 is connect by pipeline with heating heat accumulation cycling element, the expanding machine
15 are connect by mechanical axis with power compensation generator 16, and the cold side of condensing heat exchanger 18 connect formation with cold source circulating pump 24
Cold source pipeline, fills cold source working medium in the cold source pipeline, and the linkage section of condensing heat exchanger 18 and expansion working medium circulating pump 19 is logical
It crosses pipeline to connect with one end of two-way pump 21, the other end of the two-way pump 21 is connect by pipeline with working medium fluid storage tank 23；
The measure-controlling unit includes master controller 30 and the wind-driven generator generator terminal being connected with 30 device of main control inspection
Survey device 2, heat-conducting work medium Heating Furnace Control device 3, heat conductive circulation pump controller 11, heat-conducting work medium pressurization pump controller 13, expansion work
Matter recycles pump controller 20, two-way pump controller 22, cold source and recycles pump controller 25, power compensation generator generator terminal detector 28
And power transmission network detector 29, the output of the master controller 30 is also connected with the control terminal of power compensation generator 16, described
The input of wind-driven generator generator terminal detector 2 is connected with the output of wind-driven generator 1, the wind-driven generator generator terminal detector 2
Acquire the electric parameter signal of wind-driven generator operation 1, the heat-conducting work medium Heating Furnace Control device 3 and heat-conducting work medium heating furnace 4
Be connected, the heat conductive circulation pump controller 11 and heat conductive circulation pump 10 is connected, the heat-conducting work medium be pressurized pump controller 13 also with
Heat-conducting work medium booster pump 12 is connected, and the expansion working medium circulation pump controller 20 is connected with expansion working medium circulating pump 19, described double
It is connected to pump controller 22 with two-way pump control 21, the cold source circulation pump controller 25 is connected with cold source circulating pump 24, the function
The input of rate compensated dynamo generator terminal detector 28 is connected with the output of power compensation generator 16, power transmission network detector 29 it is defeated
Enter the output with main transformer to be connected, and is connected to power grid or electricity consumption end；The power compensation generator generator terminal detector 28 is adopted
Collect the electric parameter signal of power compensation generator operation 16, the power transmission network detector 29 acquires the electrical ginseng of power transmission network operation
Number signal.The two-stage for realizing hot energy storing and electricity generating is combined with thermal expansion power generation cycle unit by heating heat accumulation cycling element
Circulation, distributed power offset electricity generation device be it is a kind of extract extra electricity from wind power generating set leading-out terminal and carry out thermmal storage,
By wind-power electricity generation fluctuate in some electrical power of power abundance stored in the form of the heat of transformation, heat reservoir remains at spare shape
State, and extract in wind-force deficiency heat energy power-generating access main transformer leading-out terminal again, with the big density of offset electricity generation missing, small
The temperature difference, fast-response, low cost, efficient distributed " electric-thermal-electricity " converting system, by respective different loop switch, with
The mode of peak load shifting, the power for exporting wind-power electricity generation is steady, improves the safeguard level of output firm power, can be significantly
Storage density is improved, heat accumulation range of temperature is reduced, improves hot spot transfer efficiency, reduces equipment size, reduces equipment manufacturing cost,
Be conducive to be distributed setting on the spot in wind power plant, improve response speed, improve wind power plant output characteristics, reduce electrical network capacity it is spare at
This.
The heat-conducting work medium can be, but not limited to comprising hydration into conduction oil, mineral oil, silicon oxygen thermal grease conduction, fuse salt
One or more of stabilized mixture；Preferably it can be, but not limited to be biphenyl, Biphenyl Ether, hydrogenated terphenyl, benzyl
Base toluene, dibenzyl toluene, alkyl how, one or more kinds of stabilized mixtures of mineral oil, water.
In the phase-change thermal storage case 5, inside has and the liquid-solid phase transformation solid-liquid phase change of the high latent heat of heat-conducting work medium insulation package
Heat-retaining mass.The rapid phase transition of the high phase transformation volumetric ratio of Patent No. 201610030612.4 can be used in the phase-change thermal storage case 5
Energy storage device.It is described to can be, but not limited to the heat-conducting work medium insulation package liquid-solid phase transformation heat-retaining mass of high latent heat comprising connection
One or more of benzene, Biphenyl Ether, Polychlorinated biphenyls, siloxanes, fuse salt, melt phase change alloy stablize mixing
Object, it is preferred that heat-retaining mass can also be NaNO2、NaNO3、KNO3、KOH、NaCl、MaCl2、Ca(NO3)2、Li2SO4、LiNO3、
LiOH、Na2CO3、Li2CO3, Mg, Al, Zn, Si one or more kinds of stabilized mixtures.
The evaporation expansion working medium can be, but not limited to have comprising water, adsorption, alkane type organic, olefines
The stabilized mixture of one or more of machine object, hydrogen fluorohydrocarbon class organic matter, hydrogen carbon fluorohydrocarbon type organic, siloxanes.
Preferably, expansion working medium can also be benzene, Toluen, Cyclohexene, n-Hexene, Isopetane, n-Butane, Iso-
butane、TherminolVP-1、Hitac XL、MM(C6H18Si2O)、MDM(C6H18Si3O2)、MD2M(C10H30Si4O3)、MD3M
(C12H36Si5O4)、MD4M(C14H42Si6O5)、D4(CH32SiO4)、D5、D6(C12H36Si6O6) one or more of it is steady
Determine mixture；
Wherein, MM:Hexamethyldisiloxane, MDM:Octamethyltrisiloxane,
MD2M:Decamethylpentailoxane,MD3M:Dedamethylpentasiloxane,
MD4M:Tetradecamethylherasiloxane,D4:Oetamethylcycloteyrasiloxane,
D6:Podecamethylcyclohexasiloxane。
The expanding machine 15 includes twin-screw expander, single-screw expander, piston expansion engine, turbine type expanding machine.
The power compensation generator 16 includes asynchronous alternating current generator, synchronous alternator.
The cold source working medium includes fresh water, seawater, ammonium hydroxide, air.
The heat-conducting work medium heating furnace 4 is electric furnace.Because electric furnace is in low pressure (under normal pressure or lower pressure)
In the case of high temperature heat can be provided.
The master controller 30 passes through acquisition wind-driven generator generator terminal, power compensation generator generator terminal, the fortune at power transmission network end
Working medium operating parameter in row parameter and heating heat accumulation circulation line, thermal expansion circulation line, after being computed, difference guide
Hot working fluid Heating Furnace Control device 3, heat-conducting work medium circulation pump controller 11, heat-conducting work medium pressurization pump controller 13, expansion working medium are followed
Ring pump controller 20, two-way pump controller 22, cold source circulation pump controller 25 and power compensation generator 16 send operation and refer to
It enables.
The utility model carries out hot energy storage using solid-liquid phase change, can take the dispersed placement on the spot close to wind-driven generator
(distribution embodies)；Improving energy storage density reduces cost；It reduces heat accumulation and heat release temperature difference luffing is (former using substance isothermal phase change
Reason) improve the transfer efficiency that rankine cycle generates electricity；Device miniaturization reduces rotary inertia and improves system response time；Dispersion is on the spot
Distribution reduces the dependence to power grid, mitigates power grid burden；The advantages of for solid-liquid phase change heat accumulation, mainly there is the following aspects:
The heat accumulation temperature difference is greatly reduced.Such as it is located at Hispanic solar Tow project, is stored up using the sensible heat of solar solt
Heat, warm time-varying amplitude are up to 170 DEG C, and actually active hot power generation temperature is still at 365 DEG C or less.It is more in order to meet heat storage capacity
170 DEG C of temperature ranges out, have requirements at the higher level to equipment heat-proof corrosion resistant, so that cost is higher.If latent with solid hot phase transformation
Hot heat accumulation, due to phase transformation temperature points be it is fixed, heat absorption and heat accumulation working medium only need to around phase transition temperature up and down 20 DEG C nearby fluctuate,
Greatly reduce temperature changing amplitude, it is possible to reduce requirement of equipment under the conditions of significantly temperature becomes, to reduce cost.
Storage density can be improved.Under the premise of phase equality of temperature time-varying amplitude, due to latent heat/sensible heat of most phase change materials
Than all at 140 DEG C or more, (latent heat generally all in 220kJ/kg or more, sensible heat is generally in 1.5kJ/kg, therefore the two ratio is up to 140
Times), it can be improved 80% to more than three times using the quantity of heat storage of latent heat.In other words, under identical quantity of heat storage, can substantially subtract
Few heat-retaining mass dosage about half, to save facility cost.
Heat accumulation lower limit temperature can be improved or improve thermoelectrical efficiency.For such as aforementioned solar Tow project, due to utilizing sensible heat
Temperature range be 365 DEG C~535 DEG C, equipment heatproof condition has reached 535 DEG C or more, but the utilization scope of heat power generation
Can only be at 365 DEG C hereinafter, can not only obtain the up to latent heat of 879Kj/Kg, but also since its phase transition temperature is 471 DEG C, it can be with
It is that the lower limit temperature that heat accumulation utilizes reaches 425 DEG C, 4 percentage points of efficiency of heating- utilization can be promoted for subsequent hot power generation cycle.
The power out-put characteristic of wind power plant can directly be improved.The phase-change thermal storage technology that the utility model uses, it is therefore intended that
Make device miniaturization, dispersed placement is other in wind turbine (group), and the extra electric energy for being derived from wind-power electricity generation generator terminal realizes that " peak clipping is filled out on the spot
The power-balance of paddy " is that the great number luffing of wind-power electricity generation is smooth as far as possible in wind power plant, is not delivered on power transmission network, thus
The impact to power grid is avoided, also saves shock resistance spare capacity for power grid, actually playing reduces spare and scheduling cost work
With.On the other hand, since the power-balance compensation device of generator end is small-sized decentralized, the rotary inertia of equipment greatly reduces
(directly proportional to 4 powers of equipment size), the pot time constant of compensation system substantially reduces, and the quick-action of power luffing is substantially
It improves, so that the response speed of power compensating system is significantly faster than the quick-action of large-scale centralized power compensation facility, therefore be easier
Meet the requirement for stabilizing Power Output for Wind Power Field pulsation.
Finally, it is stated that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, those skilled in the art should understand that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover in the scope of the claims of the utility model.
Claims (8)
1. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle is applied to wind generator system,
The wind generator system includes wind-driven generator and main transformer, it is characterised in that: also comprising being stored up using insulation package phase transformation
Thermal technology is parallel to the distributed power offset electricity generation device of wind power generating set leading-out terminal, the output of wind-driven generator and master
The input of transformer is connected, and the output of main transformer is connected with electricity consumption end or power grid, the distributed power offset electricity generation device
Include heating heat accumulation cycling element, thermal expansion power generation cycle unit and measure-controlling unit；
The heating heat accumulation cycling element include heat-conducting work medium heating furnace, phase-change thermal storage case, shunt reversing valve, evaporating heat exchanger,
Bypass line, confluence reversal valve, heat-conducting work medium booster pump, pressurization fluid infusion slot and heat conductive circulation pump；The evaporating heat exchanger packet
Containing heated side and evaporation side, the heat-conducting work medium heating furnace is successively changed with phase-change thermal storage case, shunt reversing valve, evaporation by pipeline
Heated side, bypass line, confluence reversal valve and the heat conductive circulation pump of hot device, which connect and return to heat-conducting work medium heating furnace, constitutes closing
First circulation circuit, be filled with heat-conducting work medium in the first circulation circuit, the side of the heat-conducting work medium heating furnace passes through
Conducting wire is connected to the leading-out terminal of wind-driven generator, and first circulation circuit is accessed by pipeline in the other side of heat-conducting work medium heating furnace,
The phase-change thermal storage case is packaged with solid-liquid phase change heat-retaining mass, and the evaporation side of the evaporating heat exchanger passes through pipeline and thermal expansion
Power generation cycle unit connects, and the linkage section of the confluence reversal valve and heat conductive circulation pump passes through pipeline and heat-conducting work medium booster pump
The other end of one end connection, heat-conducting work medium booster pump is connect by pipeline with pressurization fluid infusion slot；
The thermal expansion power generation cycle unit includes the evaporation side of evaporating heat exchanger, expanding machine, power compensation generator, boosting
Transformer, Recuperative heat exchanger, condensing heat exchanger, cold source circulating pump, two-way pump, working medium fluid storage tank and expansion working medium circulating pump,
The Recuperative heat exchanger includes heated side and cold side, and the condensing heat exchanger includes condensation side and cold side；The evaporation is changed
The evaporation side of hot device by pipeline successively with expanding machine, the cold side of Recuperative heat exchanger, the condensation side of condensing heat exchanger and swollen
Swollen working medium circulating pump connection, the evaporation side that the piping connection by the heated side of Recuperative heat exchanger returns to evaporating heat exchanger constitute envelope
The second circulation circuit closed, evaporation expansion working medium is filled in the second circulation circuit, and the heated side of the evaporating heat exchanger is logical
It crosses pipeline to connect with heating heat accumulation cycling element, the expanding machine is connect by mechanical axis with power compensation generator, and condensation is changed
The cold side of hot device connect to form cold source pipeline with cold source circulating pump, fills cold source working medium, condensing heat-exchange in the cold source pipeline
Device is connect by pipeline with two-way pump with the linkage section of expansion working medium circulating pump, and the other end of the two-way pump passes through pipeline and work
The connection of matter fluid storage tank；
The measure-controlling unit includes master controller and the wind-driven generator generator terminal detector, thermally conductive that is connected with master controller
Working medium heating furnace controller, heat conductive circulation pump controller, heat-conducting work medium pressurization pump controller, expansion working medium circulation pump controller,
Two-way pump controller, cold source circulation pump controller, power compensation generator generator terminal detector and power transmission network detector, the master
The output of controller is also connected with the control terminal of power compensation generator, the input of the wind-driven generator generator terminal detector and wind
The output of power generator is connected, the electric parameter signal of the wind-driven generator generator terminal detector acquisition wind-driven generator operation,
The heat-conducting work medium Heating Furnace Control device is connected with heat-conducting work medium heating furnace, and the heat conductive circulation pump controller and heat conductive circulation pump
It is connected, the heat-conducting work medium pressurization pump controller is also connected with heat-conducting work medium booster pump, the expansion working medium circulation pump controller
Be connected with expansion working medium circulating pump, the two-way pump controller is connected with two-way pump control, the cold source recycle pump controller with it is cold
Source circulating pump is connected, and the input of the power compensation generator generator terminal detector is connected with the output of power compensation generator, defeated
The input of power grid detector is connected with the output of main transformer, and is connected to power grid or electricity consumption end；The power compensation generator
Generator terminal detector acquires the electric parameter signal of power compensation generator operation, the power transmission network detector acquisition power transmission network operation
Electric parameter signal.
2. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the heat-conducting work medium includes hydration into one of conduction oil, mineral oil, silicon oxygen thermal grease conduction, fuse salt
Or two or more stabilized mixture.
3. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the solid-liquid phase change heat-retaining mass encapsulated in the phase-change thermal storage case include biphenyl, Biphenyl Ether, Polychlorinated biphenyls,
The stabilized mixture of one or more of siloxanes, fuse salt, melt phase change alloy.
4. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the expansion working medium includes water, adsorption, alkane type organic, alkene type organic, hydrogen fluorohydrocarbon class
The stabilized mixture of one or more of organic matter, hydrogen carbon fluorohydrocarbon type organic, siloxanes.
5. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the expanding machine includes twin-screw expander, single-screw expander, piston expansion engine, turbine type expanding machine.
6. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the power compensation generator includes synchronous alternator, asynchronous alternating current generator.
7. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the cold source working medium includes fresh water, seawater, ammonium hydroxide, air.
8. a kind of distributed wind power balance and stability system of hot energy storing and electricity generating two stage cycle according to claim 1,
It is characterized by: the heat-conducting work medium heating furnace is electric furnace.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915953A (en) * | 2018-07-10 | 2018-11-30 | 江卫 | A kind of hot energy storage --- the wind power balance and stability system and application method of power generation two stage cycle |
| CN111106615A (en) * | 2020-01-03 | 2020-05-05 | 国网内蒙古东部电力有限公司 | Method for reducing peak-valley difference of power grid based on battery energy storage device and electric heat storage device |
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2018
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915953A (en) * | 2018-07-10 | 2018-11-30 | 江卫 | A kind of hot energy storage --- the wind power balance and stability system and application method of power generation two stage cycle |
| CN108915953B (en) * | 2018-07-10 | 2024-04-12 | 江卫 | Wind power balance stabilization system with thermal energy storage and power generation two-stage circulation and use method |
| CN111106615A (en) * | 2020-01-03 | 2020-05-05 | 国网内蒙古东部电力有限公司 | Method for reducing peak-valley difference of power grid based on battery energy storage device and electric heat storage device |
| CN111106615B (en) * | 2020-01-03 | 2023-03-31 | 国网内蒙古东部电力有限公司 | Method for reducing peak-valley difference of power grid based on battery energy storage device and electric heat storage device |
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