CN115031561A - Wind, light, fire and storage integrated peak regulation system - Google Patents
Wind, light, fire and storage integrated peak regulation system Download PDFInfo
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- CN115031561A CN115031561A CN202210576316.XA CN202210576316A CN115031561A CN 115031561 A CN115031561 A CN 115031561A CN 202210576316 A CN202210576316 A CN 202210576316A CN 115031561 A CN115031561 A CN 115031561A
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- 230000033228 biological regulation Effects 0.000 title claims description 25
- 238000003860 storage Methods 0.000 title claims description 18
- 239000007788 liquid Substances 0.000 claims abstract description 149
- 150000003839 salts Chemical class 0.000 claims abstract description 106
- 238000004146 energy storage Methods 0.000 claims abstract description 62
- 230000005611 electricity Effects 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims description 37
- 230000009467 reduction Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract 1
- 230000006870 function Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003828 downregulation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/006—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for regenerative heat-exchange apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/708—Photoelectric means, i.e. photovoltaic or solar cells
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0034—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material
- F28D2020/0047—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using liquid heat storage material using molten salts or liquid metals
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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 present disclosure provides a peak shaving system of integration is stored up to scene fire, includes: the system comprises a thermal power generating unit, a wind power generating unit, a photovoltaic unit, a power grid, a molten salt energy storage device and a steam supply pipeline; the power utilization end of the power grid is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit and the power supply end of the photovoltaic unit respectively; the electricity utilization end of the fused salt energy storage device is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the power grid respectively, the liquid inlet end of the fused salt energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the vapor outlet end of the fused salt energy storage device is connected with the vapor inlet end of the thermal power generating unit. In the peak shaving system integrating wind, light, fire and energy storage, the power supply flexibility of the fused salt energy storage device is increased by various power supply modes, the peak shaving capability of a thermal power generating unit is effectively improved, and carbon emission is reduced while the utilization efficiency of clean energy is effectively improved by using various clean energy.
Description
Technical Field
The disclosure relates to the technical field of peak shaving systems, in particular to a wind, light, fire and storage integrated peak shaving system.
Background
The thermal power generating unit not only produces electric energy, but also supplies steam to users by using the steam which does work, thereby meeting the steam supply requirement, effectively saving fuel and reducing the production cost.
In the operation of the thermal power generating unit, steam is required to be supplied to the thermal power generating unit, so that when the power demand is large, the full-load power supply of the thermal power generating unit cannot be realized while the steam supply demand is met, and when the power demand is small, the further down regulation of the electric load of the thermal power generating unit cannot be realized while the steam supply demand is met, so that the peak regulation capacity of the thermal power generating unit is poor.
Disclosure of Invention
The present disclosure is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the wind, light, fire and storage integrated peak shaving system is provided.
In order to achieve the above object, the present disclosure provides a wind, light, fire and storage integrated peak regulation system, comprising: the system comprises a thermal power generating unit, a wind power generating unit, a photovoltaic unit, a power grid, a molten salt energy storage device and a steam supply pipeline; the power utilization end of the power utilization grid is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit and the power supply end of the photovoltaic unit respectively; the power utilization end of the fused salt energy storage device is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power utilization end of the power grid respectively, the liquid inlet end of the fused salt energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the vapor outlet end of the fused salt energy storage device is connected with the vapor inlet end of the thermal power generating unit; and the steam inlet end of the steam supply pipeline is respectively connected with the liquid outlet end of the thermal power generating unit and the steam outlet end of the molten salt energy storage device.
Optionally, the molten salt energy storage device includes: the power utilization end of the electric heater is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the power utilization grid respectively; the liquid inlet end of the high-temperature tank is connected with the liquid outlet end of the electric heater; the liquid inlet end of a first passage of the first heat exchanger is connected with the liquid outlet end of the high-temperature tank, the liquid inlet end of a second passage of the first heat exchanger is connected with the liquid outlet end of the thermal power generating unit, and the vapor outlet end of the second passage of the first heat exchanger is connected with the vapor inlet end of the vapor supply pipeline and the vapor inlet end of the thermal power generating unit; the liquid inlet end of the low-temperature tank is connected with the liquid outlet end of the first passage of the first heat exchanger, and the liquid outlet end of the low-temperature tank is connected with the liquid inlet end of the electric heater.
Optionally, the molten salt energy storage device further includes: the pump comprises a first pump body, wherein the first pump body is arranged between the liquid outlet end of the low-temperature tank and the liquid inlet end of the electric heater, the liquid inlet end of the first pump body is connected with the liquid outlet end of the low-temperature tank, and the liquid outlet end of the first pump body is connected with the liquid inlet end of the electric heater.
Optionally, the molten salt energy storage device further includes: the second pump body, the second pump body sets up the first passageway feed liquor end of first heat exchanger with the play liquid end of high temperature jar links to each other between, the feed liquor end of the second pump body with the play liquid end of high temperature jar links to each other, the play liquid end of the second pump body with the first passageway feed liquor end of first heat exchanger links to each other.
Optionally, the peak shaving system further includes: the power utilization end of the electric boiler is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the power utilization grid respectively, and the liquid inlet end of the electric boiler is connected with the liquid outlet end of the heat utilization equipment; the liquid inlet end of a first passage of the second heat exchanger is connected with the liquid outlet end of the electric boiler, the vapor inlet end of a second passage of the second heat exchanger is connected with the vapor outlet end of a second passage of the first heat exchanger, and the liquid outlet end of the second passage of the second heat exchanger is connected with the liquid inlet end of the thermal power generating unit; and the liquid outlet end of the heat supply pipeline is connected with the liquid inlet end of the heat utilization equipment.
Optionally, the peak shaving system further includes: the first regulating valve is arranged between the steam inlet end of the second passage of the second heat exchanger and the steam outlet end of the second passage of the first heat exchanger, the steam inlet end of the first regulating valve is connected with the steam outlet end of the second passage of the first heat exchanger, and the steam outlet end of the first regulating valve is connected with the steam inlet end of the second passage of the second heat exchanger.
Optionally, the peak shaving system further includes: the third pump body, the third pump body sets up between the feed liquor end of electric boiler and the play liquid end of heat equipment link to each other, the feed liquor end of the third pump body with the play liquid end of heat equipment links to each other, the play liquid end of the third pump body with the feed liquor end of electric boiler links to each other.
Optionally, the peak shaving system further comprises: the second regulating valve is arranged between the steam inlet end of the steam supply pipeline and the steam outlet end of the fused salt energy storage device, the steam inlet end of the second regulating valve is connected with the steam outlet end of the fused salt energy storage device and the steam outlet end of the thermal power unit, and the steam outlet end of the second regulating valve is connected with the steam inlet end of the steam supply pipeline.
Optionally, the peak shaving system further includes: the temperature reduction valve is arranged between the steam inlet end of the steam supply pipeline and the liquid outlet end of the thermal power generating unit, the liquid inlet end of the temperature reduction valve is connected with the liquid outlet end of the thermal power generating unit, and the liquid outlet end of the temperature reduction valve is connected with the steam inlet end of the steam supply pipeline.
Optionally, the peak shaving system further comprises: and the third regulating valve is arranged between the steam outlet end of the molten salt energy storage device and the steam inlet end of the thermal power generating unit, the steam inlet end of the third regulating valve is connected with the steam outlet end of the molten salt energy storage device, and the steam outlet end of the third regulating valve is connected with the steam inlet end of the thermal power generating unit.
The technical scheme provided by the disclosure can comprise the following beneficial effects:
the thermal power generating unit converts heat energy into electric energy and supplies power to the power grid and the fused salt energy storage device, the wind power generating unit converts wind energy into electric energy and supplies power to the power grid and the fused salt energy storage device, the photovoltaic unit converts light energy into electric energy and supplies power to the power grid and the fused salt energy storage device, meanwhile, the power grid also supplies power to the fused salt energy storage device, the power supply flexibility of the fused salt energy storage device is improved through various power supply modes, the peak regulation capacity of the thermal power generating unit is effectively improved, and due to the use of various clean energy sources, the carbon emission is reduced while the utilization efficiency of the clean energy sources is effectively improved;
meanwhile, the fused salt energy storage device converts electric energy into heat energy to be stored in the fused salt, and the fused salt of the fused salt energy storage device heats partial liquid of the thermal power generating unit, so that part of the liquid of the thermal power generating unit is converted into steam, and then part of the steam returns to the thermal power generating unit to generate electricity, and the other part of the steam is supplied through a steam supply pipeline, so that the whole peak regulation system is matched with the thermal power generating unit, the wind power generating unit, the photovoltaic unit and the fused salt energy storage device, the peak regulation capability of the thermal power generating unit is effectively improved, and meanwhile, stable steam supply is realized;
when the power demand of the power grid is large or small, the heat stored in the fused salt can be used for steam supply, so that the thermal power generating unit can supply power at full load or the electric load is deeply reduced, and the peak regulation capacity of the thermal power generating unit is effectively improved.
Additional aspects and advantages of the disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The foregoing and/or additional aspects and advantages of the present disclosure will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a wind, light, fire and storage integrated peak shaving system according to an embodiment of the disclosure;
fig. 2 is a schematic structural diagram of a wind, light, fire and storage integrated peak shaving system according to an embodiment of the disclosure;
as shown in the figure: 1. thermal power generating unit, 2, wind power generation unit, 3, photovoltaic unit, 4, with the electric wire netting, 5, fused salt energy memory, 6, the steam supply pipeline, 7, electric heater, 8, high temperature jar, 9, first heat exchanger, 10, low temperature jar, 11, the first pump body, 12, the second pump body, 13, electric boiler, 14, the second heat exchanger, 15, the heat supply pipeline, 16, first governing valve, 17, the third pump body, 18, the second governing valve, 19, the temperature reduction valve, 20, the third governing valve.
Detailed Description
Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the present disclosure and should not be construed as limiting the same. On the contrary, the embodiments of the disclosure include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
As shown in fig. 1 and fig. 2, an embodiment of the present disclosure provides a wind, light, fire and storage integrated peak shaving system, which includes a thermal power generating unit 1, a wind power generating unit 2, a photovoltaic power generating unit 3, and an electric grid 4, fused salt energy memory 5 and steam supply pipeline 6, the power consumption end of using electric wire netting 4 respectively with thermal power generating set 1's power supply end, wind power generating set 2's power supply end and photovoltaic unit 3's power supply end electrical property link to each other, fused salt energy memory 5's power consumption end respectively with thermal power generating set 1's power supply end, wind power generating set 2's power supply end, photovoltaic unit 3's power supply end and the power supply end electrical property of using electric wire netting 4 link to each other, fused salt energy memory 5's inlet end links to each other with thermal power generating set 1's play liquid end, fused salt energy memory 5's the steam-out end links to each other with thermal power generating set 1's the steam-out end, steam supply pipeline 6's steam-in end links to each other with thermal power generating set 1's play liquid end and fused salt energy memory 5's play steam-out end respectively.
It can be understood that, thermal power unit 1 converts heat energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, wind turbine generator system 2 converts wind energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, photovoltaic unit 3 converts light energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, and simultaneously, use electric wire netting 4 still for fused salt energy memory 5 power supply, multiple power supply mode has increased fused salt energy memory 5's power supply flexibility, thermal power unit 1's peak regulation ability has effectively been improved, and the use of multiple clean energy, carbon emission has been reduced when effectively improving clean energy utilization efficiency.
Meanwhile, the fused salt energy storage device 5 converts electric energy into heat energy to be stored in the fused salt, and the fused salt of the fused salt energy storage device 5 heats partial liquid of the thermal power generating unit 1, so that part of the liquid of the thermal power generating unit 1 is converted into steam, and then part of the steam returns to the thermal power generating unit 1 to generate electricity, and the other part of the steam is supplied through a steam supply pipeline, so that the whole peak regulation system is matched with the thermal power generating unit 1, the wind power generating unit 2, the photovoltaic unit 3 and the fused salt energy storage device 5, the peak regulation capacity of the thermal power generating unit 1 is effectively improved, and meanwhile, stable steam supply is realized;
when the power demand of the power grid 4 is large or small, the heat stored in the molten salt can be used for steam supply, so that the thermal power generating unit 1 can supply power at full load or the electric load is deeply reduced, and the peak regulation capacity of the thermal power generating unit 1 is effectively improved.
It should be noted that, when the power demand of the power grid 4 is moderate, at this moment, the wind turbine generator 2 and the photovoltaic generator 3 supply power as the main power supply of the molten salt energy storage device 5, and the thermal power generator 1 and the power grid 4 supply power as the standby power supply of the molten salt energy storage device 5, that is: when wind energy and light energy are both small, the output electric energy of the wind turbine generator set 2 and the output electric energy of the photovoltaic generator set 3 are both small and even not output electric energy, the fused salt energy storage device 5 is powered by the thermal power generating set 1 or the power grid 4, and when at least one of the wind energy and the light energy is large, the fused salt energy storage device 5 is powered by the wind turbine generator set 2 and the photovoltaic generator set 3 when at least one of the wind energy and the light energy outputs large electric energy.
When the power consumption demand of the power grid 4 is large, the thermal power generating unit 1, the wind power generating unit 2 and the photovoltaic unit 3 are all fully loaded to supply power for the power grid 4, the fused salt energy storage device 5 does not store heat and only releases heat, meanwhile, the fused salt of the fused salt energy storage device 5 heats partial liquid of the thermal power generating unit 1, the partial liquid of the thermal power generating unit 1 is converted into steam, and then a part of the steam returns to the thermal power generating unit 1 to generate power, so that the power generation capacity of the thermal power generating unit 1 is improved, and the other part of the steam is supplied through a steam supply pipeline.
When the power consumption requirement of the power grid 4 is small, the fused salt energy storage device 5 is only powered by the thermal power generating unit 1 or the power grid 4, and part of the liquid output of the thermal power generating unit 1 is converted into steam and then is completely supplied with steam through a steam supply pipeline so as to increase the peak regulation depth.
Therefore, the influence of the power demand of the power grid 4 is avoided, the molten salt of the molten salt energy storage device 5 heats partial liquid of the thermal power generating unit 1 all the time, the partial liquid of the thermal power generating unit 1 is converted into steam, and then the steam is supplied through a steam supply pipeline, so that the overall stable and continuous steam supply of the peak regulation system is realized.
Wherein, thermal power unit 1 belongs to the station service for fused salt energy memory 5's power supply, and when fused salt energy memory 5 was supplied power by thermal power unit 1 or with electric wire netting 4, the reply was selected after the cost that fused salt energy memory 5 was supplied power by thermal power unit 1 and fused salt energy memory 5 was supplied power by electric wire netting 4, for example: when the cost that fused salt energy storage device 5 was supplied power by thermal power unit 1 is greater than by the cost of using electric network 4 to supply power, make fused salt energy storage device 5 supply power by electric network 4, when the cost that fused salt energy storage device 5 was supplied power by thermal power unit 1 was less than by the cost of using electric network 4 to supply power, make fused salt energy storage device 5 supply power by thermal power unit 1.
The thermal power generating unit 1 comprises a boiler, a cylinder, a generator, a condenser, a deaerator and the like, the boiler heats water into steam, the steam enters the cylinder to do work and drives the generator to generate electricity, the condenser condenses the steam after doing work into water, the water is gradually heated through steam extraction in the cylinder and enters the boiler again after being deaerated by the deaerator to be recycled, wherein the liquid inlet end of the thermal power generating unit 1 refers to the liquid inlet end of the boiler, the liquid outlet end of the thermal power generating unit 1 refers to the liquid outlet end of the condenser or the deaerator, and the power supply end of the thermal power generating unit 1 refers to the power supply end of the generator.
The wind turbine generator set 2 comprises a wind wheel, a generator and the like, the wind drives the wind wheel to rotate, the wind wheel drives the generator to generate electricity, and the power supply end of the wind turbine generator set 2 refers to the power supply end of the generator.
The photovoltaic unit 3 comprises a solar panel, a controller, an inverter and the like, wherein after the solar panel converts light energy into electric energy, the electric energy is output through the cooperation of all the parts.
As shown in fig. 1 and 2, in some embodiments, the molten salt energy storage device 5 includes an electric heater 7, a high-temperature tank 8, a first heat exchanger 9 and a low-temperature tank 10, the power utilization ends of the electric heater 7 are respectively connected with the power supply ends of the thermal power generating unit 1, the power supply end of the wind turbine generator set 2, the power supply end of the photovoltaic generator set 3 and the power supply end of the power grid 4 are electrically connected, the liquid inlet end of the high-temperature tank 8 is connected with the liquid outlet end of the electric heater 7, the liquid inlet end of a first passage of the first heat exchanger 9 is connected with the liquid outlet end of the high-temperature tank 8, the liquid inlet end of a second passage of the first heat exchanger 9 is connected with the liquid outlet end of the thermal power unit 1, the vapor outlet end of a second passage of the first heat exchanger 9 is connected with the vapor inlet end of the vapor supply pipeline 6 and the vapor inlet end of the thermal power unit 1, the liquid inlet end of the low-temperature tank 10 is connected with the liquid outlet end of the first passage of the first heat exchanger 9, and the liquid outlet end of the low-temperature tank 10 is connected with the liquid inlet end of the electric heater 7.
It is understood that the molten salt in the low temperature tank 10 passes through the electric heater 7 and then enters the high temperature tank 8, wherein when the molten salt passes through the electric heater 7, the electric heater 7 converts electric energy into heat energy to be stored in the molten salt, so as to heat the molten salt. Thereby, the molten salt having a higher heat quantity is stored in the high-temperature tank 8;
molten salt in the high-temperature tank 8 enters the low-temperature tank 10 after passing through a first passage of the first heat exchanger 9, part of the effluent of the thermal power unit 1 directly enters the steam supply pipeline 6, the rest of the effluent of the thermal power unit 1 enters the steam supply pipeline 6 and the thermal power unit 1 after passing through a second passage of the first heat exchanger 9, wherein when the molten salt passes through the first passage of the first heat exchanger 9 and the rest of the liquid outlet of the thermal power generating unit 1 passes through the second passage of the first heat exchanger 9, the heat in the molten salt is transferred to the rest of the liquid outlet of the thermal power generating unit 1, thereby converting the rest liquid of the thermal power generating unit 1 into steam, mixing partial steam with partial liquid of the thermal power generating unit 1, and delivering the mixture to steam utilization equipment through a steam supply pipeline 6, thereby realizing steam supply of the cogeneration unit, and the rest steam enters a cylinder of the thermal power generating unit 1 to do work and generate power so as to improve the generating capacity of the thermal power generating unit 1.
As shown in fig. 1 and fig. 2, in some embodiments, the molten salt energy storage device 5 further includes a first pump body 11, the first pump body 11 is disposed between the liquid outlet end of the cryogenic tank 10 and the liquid inlet end of the electric heater 7, the liquid inlet end of the first pump body 11 is connected to the liquid outlet end of the cryogenic tank 10, and the liquid outlet end of the first pump body 11 is connected to the liquid inlet end of the electric heater 7.
It can be understood that the first pump body 11 pressurizes the molten salt in the low-temperature tank 10 and then conveys the pressurized molten salt into the high-temperature tank 8, so that stable heat storage of the molten salt is ensured.
As shown in fig. 1 and 2, in some embodiments, the molten salt energy storage device 5 further includes a second pump body 12, the second pump body 12 is disposed between the liquid inlet end of the first passage of the first heat exchanger 9 and the liquid outlet end of the high-temperature tank 8, the liquid inlet end of the second pump body 12 is connected to the liquid outlet end of the high-temperature tank 8, and the liquid outlet end of the second pump body 12 is connected to the liquid inlet end of the first passage of the first heat exchanger 9.
It can be understood that the second pump body 12 pressurizes the molten salt in the high-temperature tank 8 and then conveys the pressurized molten salt into the low-temperature tank 10, so that stable heat release of the molten salt is ensured.
As shown in fig. 2, in some embodiments, the peak shaving system further includes an electric boiler 13, a second heat exchanger 14, and a heat supply pipeline 15, a power consumption end of the electric boiler 13 is electrically connected to a power supply end of the thermal power generating unit 1, a power supply end of the wind power generating unit 2, a power supply end of the photovoltaic power generating unit 3, and a power supply end of the power grid 4, a liquid inlet end of the electric boiler 13 is connected to a liquid outlet end of the heat consumption device, a liquid inlet end of a first passage of the second heat exchanger 14 is connected to a liquid outlet end of the electric boiler 13, a vapor inlet end of a second passage of the second heat exchanger 14 is connected to a vapor outlet end of a second passage of the first heat exchanger 9, a liquid outlet end of the second heat exchanger 14 is connected to a liquid inlet end of the thermal power generating unit 1, a liquid inlet end of the heat supply pipeline 15 is connected to a liquid outlet end of the first passage of the second heat exchanger 14, and a liquid outlet end of the heat supply pipeline 15 is connected to a liquid inlet end of the heat consumption device.
It can be understood that the outlet liquid of the heat utilization equipment sequentially passes through the first passages of the electric boiler 13 and the second heat exchanger 14 and then returns to the heat utilization equipment again, and the outlet steam of the second passage of the first heat exchanger 9 passes through the second passage of the second heat exchanger 14 and then enters the thermal power generating unit 1 for recycling, wherein when the outlet liquid of the heat utilization equipment passes through the electric boiler 13, the electric boiler 13 converts electric energy into heat energy and stores the heat energy in the outlet liquid of the heat utilization equipment, and simultaneously, when the outlet steam of the second passage of the first heat exchanger 9 passes through the second passage of the second heat exchanger 14 and the outlet liquid of the heat utilization equipment passes through the first passage of the second heat exchanger 14, the outlet steam of the second passage of the first heat exchanger 9 transfers the heat energy to the outlet liquid of the heat utilization equipment, thereby realizing the heat supply of the peak regulation system.
Thermal power unit 1 still supplies power for electric boiler 13 when converting heat energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, wind turbine generator system 2 still supplies power for electric boiler 13 when converting wind energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, photovoltaic unit 3 still supplies power for electric boiler 13 when converting light energy into electric energy and for using electric wire netting 4 and fused salt energy memory 5 power supply, and simultaneously, still for electric boiler 13 power supply when using electric wire netting 4 for fused salt energy memory 5 power supply, multiple power supply mode has increased fused salt energy memory 5's power supply flexibility, thermal power unit 1's peak regulation ability has effectively been improved, and the use of multiple clean energy, carbon emission has been reduced when effectively improving clean energy utilization efficiency.
When the power demand of the power grid 4 is large or small, heat stored in the molten salt can be used for heat supply, so that the thermal power generating unit 1 can supply power at full load or the electric load is deeply reduced, and the peak regulation capacity of the thermal power generating unit 1 is effectively improved.
It should be noted that, when the power demand of the power grid 4 is moderate, at this time, the wind turbine generator system 2 and the photovoltaic generator system 3 supply power as the main power supply of the electric boiler 13, and the thermal power unit 1 and the power grid 4 supply power as the standby power supply of the electric boiler 13, that is: when the wind energy and the light energy are both small, the output electric energy of the wind turbine generator 2 and the output electric energy of the photovoltaic generator 3 are both small and even not output electric energy, the electric boiler 13 is powered by the thermal power generating unit 1 or the power grid 4, and when at least one of the wind energy and the light energy is large, the electric boiler 13 is powered by the wind turbine generator 2 and the photovoltaic generator 3 when at least one of the wind turbine generator 2 and the photovoltaic generator 3 outputs large electric energy.
When the demand of power consumption of the power grid 4 is large, the thermal power unit 1, the wind power unit 2 and the photovoltaic unit 3 are all fully loaded to supply power for the power grid 4, the fused salt energy storage device 5 does not store heat and only releases heat, the electric boiler 13 does not heat the liquid discharged from the thermal power unit 1, meanwhile, the fused salt of the fused salt energy storage device 5 heats the liquid discharged from the thermal power unit 1, part of the liquid discharged from the thermal power unit 1 is converted into steam, then the steam is returned to the thermal power unit 1 to generate power, the generated energy of the thermal power unit 1 is improved, the steam is supplied to the other part of the liquid discharged from the thermal power unit through a steam supply pipeline, the liquid discharged from the thermal power unit is heated through the second heat exchanger 14, and the steam supply and the heat supply of the peak regulation system are realized.
When the power consumption requirement of the power grid 4 is small, the electric boiler 13 is only powered by the thermal power generating unit 1 or the power grid 4, partial liquid outlet of the thermal power generating unit 1 is converted into steam, then the steam is supplied to the steam through the steam supply pipeline, and the liquid outlet of the heat utilization equipment is heated through the second heat exchanger 14, so that the peak shaving depth is increased.
From this, not influenced by with electric wire netting 4 power consumption demand, the partial play liquid of fused salt energy memory 5 heating thermal power generating unit 1 all the time, make the partial play liquid of thermal power generating unit 1 convert and supply vapour and heat the play liquid of heat equipment through second heat exchanger 14 through supplying vapour pipeline after the steam, realize peak regulation system whole stable and continuous confession vapour and heat supply.
Wherein, thermal power unit 1 belongs to the station service for the power supply of electric boiler 13, and when electric boiler 13 was supplied power by thermal power unit 1 or with electric wire netting 4, reply than electric boiler 13 by the cost back selection of the cost of thermal power unit 1 power supply and electric boiler 13 by the cost of using electric wire netting 4 power supply, for example: when the cost of the power supply of the electric boiler 13 by the thermal power generating unit 1 is greater than the cost of the power supply by the power grid 4, the electric boiler 13 is powered by the power grid 4, and when the cost of the power supply of the electric boiler 13 by the thermal power generating unit 1 is less than the cost of the power supply by the power grid 4, the electric boiler 13 is powered by the thermal power generating unit 1.
The first heat exchanger 9 and the second heat exchanger 14 both comprise a first passage and a second passage, and direct heat exchange or indirect heat exchange through a heat-conducting medium is performed between the first passage and the second passage.
As shown in fig. 2, in some embodiments, the peak shaving system further includes a first regulating valve 16, the first regulating valve 16 is disposed between the connection between the second path steam inlet of the second heat exchanger 14 and the second path steam outlet of the first heat exchanger 9, the steam inlet of the first regulating valve 16 is connected to the second path steam outlet of the first heat exchanger 9, and the steam outlet of the first regulating valve 16 is connected to the second path steam inlet of the second heat exchanger 14.
It can be understood that, when the power demand of the power grid 4 is large, the opening degree of the first regulating valve 16 is increased, so that more steam enters the second passage of the second heat exchanger 14, and when the power demand of the power grid 4 is small, the opening degree of the first regulating valve 16 is reduced, so that more steam enters the steam supply pipeline 6, therefore, through the arrangement of the first regulating valve 16, the distribution proportion of the steam outlet of the second passage of the first heat exchanger 9 between the steam supply pipeline 6 and the second passage of the second heat exchanger 14 is convenient to control, and the peak regulation system has higher flexibility while meeting the requirements of heat supply and steam supply.
As shown in fig. 2, in some embodiments, the peak shaving system further includes a third pump 17, the third pump 17 is disposed between the inlet end of the electric boiler 13 and the outlet end of the heat consuming equipment, the inlet end of the third pump 17 is connected to the outlet end of the heat consuming equipment, and the outlet end of the third pump 17 is connected to the inlet end of the electric boiler 13.
It can be understood that the third pump body 17 conveys the discharged liquid of the heat utilization equipment to the liquid inlet end of the heat utilization equipment after the discharged liquid of the heat utilization equipment is pressurized, and the stable heat supply of the peak regulation system is ensured.
As shown in fig. 1 and 2, in some embodiments, the peak shaving system further includes a second regulating valve 18, the second regulating valve 18 is disposed between the steam inlet end of the steam supply pipeline 6 and the steam outlet end of the thermal power unit 1 and the steam outlet end of the molten salt energy storage device 5, the steam inlet end of the second regulating valve 18 is connected to the steam outlet end of the thermal power unit 1 and the steam outlet end of the molten salt energy storage device 5, and the steam outlet end of the second regulating valve 18 is connected to the steam inlet end of the steam supply pipeline 6.
It can be understood that the arrangement of the second regulating valve 18 facilitates the control of the steam supply flow of the steam supply pipeline 6, and improves the steam supply flexibility of the peak shaving system.
As shown in fig. 1 and 2, in some embodiments, the peak shaving system further includes a temperature-reducing valve 19, the temperature-reducing valve 19 is disposed between the steam inlet end of the steam supply pipeline 6 and the liquid outlet end of the thermal power generating unit 1, the liquid inlet end of the temperature-reducing valve 19 is connected to the liquid outlet end of the thermal power generating unit 1, and the liquid outlet end of the temperature-reducing valve 19 is connected to the steam inlet end of the steam supply pipeline 6.
It can be understood that partial effluent of the thermal power generating unit 1 enters the steam supply pipeline 6 after passing through the temperature reduction valve 19 so as to adjust the steam supply temperature of the steam supply pipeline 6 and ensure that the steam supply of the peak regulation system can meet the steam demand.
As shown in fig. 1 and 2, in some embodiments, the peak shaving system further includes a third regulating valve 20, the third regulating valve 20 is disposed between the steam outlet of the molten salt energy storage device 5 and the steam inlet of the thermal power generating unit 1, the steam inlet of the third regulating valve 20 is connected to the steam outlet of the molten salt energy storage device 5, and the steam outlet of the third regulating valve 20 is connected to the steam inlet of the thermal power generating unit 1.
It can be understood that, when the power demand of the power grid 4 is great, the opening degree of the third regulating valve 20 is increased, so that more steam enters the thermal power generating unit 1, when the power demand of the power grid 4 is small, the third regulating valve 20 is reduced or even closed, so that more steam enters the steam supply pipeline 6, therefore, through the setting of the third regulating valve 20, the distribution proportion of the steam outlet of the second passage of the first heat exchanger 9 between the steam supply pipeline 6 and the thermal power generating unit 1 is convenient to control, and the peak regulation system has higher peak regulation capability while meeting the requirements of heat supply and steam supply.
It should be noted that, in the description of the present disclosure, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present disclosure, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present disclosure includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present disclosure.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present disclosure have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present disclosure, and that changes, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present disclosure.
Claims (10)
1. A wind, light, fire and storage integrated peak regulation system is characterized by comprising:
the system comprises a thermal power generating unit, a wind power generating unit, a photovoltaic unit, a power grid, a molten salt energy storage device and a steam supply pipeline;
the power utilization end of the power utilization grid is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit and the power supply end of the photovoltaic unit respectively;
the electricity utilization end of the molten salt energy storage device is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the electricity utilization grid respectively, the liquid inlet end of the molten salt energy storage device is connected with the liquid outlet end of the thermal power generating unit, and the steam outlet end of the molten salt energy storage device is connected with the steam inlet end of the thermal power generating unit;
and the steam inlet end of the steam supply pipeline is respectively connected with the liquid outlet end of the thermal power generating unit and the steam outlet end of the molten salt energy storage device.
2. The wind, light, fire and storage integrated peak shaving system according to claim 1, wherein the molten salt energy storage device comprises:
the power utilization end of the electric heater is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the power utilization grid respectively;
the liquid inlet end of the high-temperature tank is connected with the liquid outlet end of the electric heater;
the liquid inlet end of a first passage of the first heat exchanger is connected with the liquid outlet end of the high-temperature tank, the liquid inlet end of a second passage of the first heat exchanger is connected with the liquid outlet end of the thermal power generating unit, and the vapor outlet end of the second passage of the first heat exchanger is connected with the vapor inlet end of the vapor supply pipeline and the vapor inlet end of the thermal power generating unit;
the liquid inlet end of the low-temperature tank is connected with the liquid outlet end of the first passage of the first heat exchanger, and the liquid outlet end of the low-temperature tank is connected with the liquid inlet end of the electric heater.
3. The wind, light, fire and storage integrated peak shaving system according to claim 2, wherein the molten salt energy storage device further comprises:
the pump comprises a first pump body, wherein the first pump body is arranged between the liquid outlet end of the low-temperature tank and the liquid inlet end of the electric heater, the liquid inlet end of the first pump body is connected with the liquid outlet end of the low-temperature tank, and the liquid outlet end of the first pump body is connected with the liquid inlet end of the electric heater.
4. The wind, light, fire and storage integrated peak shaving system according to claim 2, wherein the molten salt energy storage device further comprises:
the second pump body, the second pump body sets up the first passageway feed liquor end of first heat exchanger with the play liquid end of high temperature jar links to each other between, the feed liquor end of the second pump body with the play liquid end of high temperature jar links to each other, the play liquid end of the second pump body with the first passageway feed liquor end of first heat exchanger links to each other.
5. The wind, light, fire and storage integrated peak shaving system according to claim 1, further comprising:
the power utilization end of the electric boiler is electrically connected with the power supply end of the thermal power generating unit, the power supply end of the wind power generating unit, the power supply end of the photovoltaic unit and the power supply end of the power utilization grid respectively, and the liquid inlet end of the electric boiler is connected with the liquid outlet end of the heat utilization equipment;
the liquid inlet end of a first passage of the second heat exchanger is connected with the liquid outlet end of the electric boiler, the vapor inlet end of a second passage of the second heat exchanger is connected with the vapor outlet end of a second passage of the first heat exchanger, and the liquid outlet end of the second passage of the second heat exchanger is connected with the liquid inlet end of the thermal power generating unit;
and the liquid outlet end of the heat supply pipeline is connected with the liquid inlet end of the heat utilization equipment.
6. The wind, light, fire and storage integrated peak shaving system according to claim 5, further comprising:
the first regulating valve is arranged between the steam inlet end of the second passage of the second heat exchanger and the steam outlet end of the second passage of the first heat exchanger, the steam inlet end of the first regulating valve is connected with the steam outlet end of the second passage of the first heat exchanger, and the steam outlet end of the first regulating valve is connected with the steam inlet end of the second passage of the second heat exchanger.
7. The wind, light, fire and storage integrated peak shaving system according to claim 5, further comprising:
the third pump body, the third pump body sets up between the feed liquor end of electric boiler and the play liquid end of heat equipment link to each other, the feed liquor end of the third pump body with the play liquid end of heat equipment links to each other, the play liquid end of the third pump body with the feed liquor end of electric boiler links to each other.
8. The wind, light, fire and storage integrated peak shaving system according to any one of claims 1-7, characterized in that the peak shaving system further comprises:
the second regulating valve is arranged between the steam inlet end of the steam supply pipeline and the steam outlet end of the fused salt energy storage device, the steam inlet end of the second regulating valve is connected with the steam outlet end of the fused salt energy storage device and the steam outlet end of the thermal power unit, and the steam outlet end of the second regulating valve is connected with the steam inlet end of the steam supply pipeline.
9. The wind, light, fire and storage integrated peak shaving system according to any one of claims 1-7, characterized in that the peak shaving system further comprises:
the temperature reduction valve is arranged between the steam inlet end of the steam supply pipeline and the liquid outlet end of the thermal power generating unit, the liquid inlet end of the temperature reduction valve is connected with the liquid outlet end of the thermal power generating unit, and the liquid outlet end of the temperature reduction valve is connected with the steam inlet end of the steam supply pipeline.
10. The wind, light, fire and storage integrated peak shaving system according to any one of claims 1-7, characterized in that the peak shaving system further comprises:
and the third regulating valve is arranged between the steam outlet end of the molten salt energy storage device and the steam inlet end of the thermal power generating unit, the steam inlet end of the third regulating valve is connected with the steam outlet end of the molten salt energy storage device, and the steam outlet end of the third regulating valve is connected with the steam inlet end of the thermal power generating unit.
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| CN202210576316.XA CN115031561A (en) | 2022-05-25 | 2022-05-25 | Wind, light, fire and storage integrated peak regulation system |
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| CN202210576316.XA CN115031561A (en) | 2022-05-25 | 2022-05-25 | Wind, light, fire and storage integrated peak regulation system |
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