CN110057115A - A kind of light, electricity complementary trough photovoltaic power generation system and its operation method - Google Patents
A kind of light, electricity complementary trough photovoltaic power generation system and its operation method Download PDFInfo
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- CN110057115A CN110057115A CN201910338920.7A CN201910338920A CN110057115A CN 110057115 A CN110057115 A CN 110057115A CN 201910338920 A CN201910338920 A CN 201910338920A CN 110057115 A CN110057115 A CN 110057115A
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- 230000005611 electricity Effects 0.000 title claims abstract description 53
- 238000010248 power generation Methods 0.000 title claims abstract description 36
- 230000000295 complement effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 17
- 150000003839 salts Chemical class 0.000 claims abstract description 284
- 238000012546 transfer Methods 0.000 claims abstract description 27
- 238000002844 melting Methods 0.000 claims abstract description 16
- 230000008018 melting Effects 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 26
- 230000001351 cycling effect Effects 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 21
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000005485 electric heating Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000155 melt Substances 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
- 238000004146 energy storage Methods 0.000 abstract description 3
- 230000005855 radiation Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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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
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
- F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/006—Methods of steam generation characterised by form of heating method using solar heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
- F24S23/74—Arrangements for concentrating solar-rays for solar heat collectors with reflectors with trough-shaped or cylindro-parabolic reflective surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S60/00—Arrangements for storing heat collected by solar heat collectors
- F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Sustainable Development (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The present invention relates to a kind of light, electricity complementary trough photovoltaic power generation systems and its operation method, it is characterised in that it includes slot type Ji Rejingchang, oil-salt heat exchanger, Heat-transfer Oil Pump, low-temperature molten salt storage tank, low-temperature molten salt pump, electric heater, salt storage tank, high-temperature melting salt pump, steam generator and steam generating system.Light of the present invention, electricity complementary trough photovoltaic power generation system and its operation method, by installing electric heater bypass additional in slot type photo-thermal power station power generation molten salt energy storage system, abandonment is received to abandon the electricity such as light, paddy electricity using electric heater, the abandoning electricity that new energy can be effectively reduced, plays the role of peak load shifting to power grid；The power of electric heater according to the height flexible modulation of off-design point day intensity of solar radiation, can increase the energy output of off-design point day, improve the operational flexibility and economy of slot type photo-thermal power station；Opening and closing electric heater bypass does not influence former trough photovoltaic power generation system, high system safety.
Description
Technical field
The present invention relates to a kind of light, electricity complementary trough photovoltaic power generation systems and its operation method, belong to slot type photo-thermal hair
Electro-technical field.
Background technique
Slot type photo-thermal power generation technology is current most mature, least cost solar energy thermal-power-generating technology, meets " large capacity-
The international solar energy thermal-power-generating technology trends of high parameter-long period heat accumulation ".
In the northwestern in China, solar energy resources are the abundantest, but it is also the new energy such as wind-powered electricity generation, photovoltaic abandon electricity
Measure highest area.Meanwhile with the development of economy, demand of the society to electric energy constantly increases, and expands electrical network capacity constantly
Greatly, power structure changes a lot, so that the peak-valley difference of each bulk power grid increases increasingly, how to efficiently use paddy electricity, for
Peak load shifting, the peak regulation dilatation important in inhibiting of power grid.
Slot type photo-thermal power station with heat accumulation is formed the complementary system of joint with electric power such as wind-powered electricity generation, photovoltaic, paddy electricities to send out
Electricity abandons light rate with remarkable effect for reducing abandonment, and can effectively shift the peak valley electric power of surplus, is conducive to improve slot type
The operational flexibility and economy of photo-thermal power station are a kind of Green power generation technologies truly.
Summary of the invention
The object of the present invention is to provide a kind of to realize the slot type for abandoning the effective use of the electric power such as light, paddy electricity to abandonment
Solar-thermal generating system improves the operational flexibility and economy of slot type photo-thermal power station.It is a further object to provide one
The operation method of kind above system.
In order to achieve the above object, a technical solution of the invention slot type photo-thermal complementary there is provided a kind of light, electricity
Electricity generation system, which is characterized in that molten including slot type Ji Rejingchang, oil-salt heat exchanger, Heat-transfer Oil Pump, low-temperature molten salt storage tank, low temperature
Salt pump, electric heater, salt storage tank, high-temperature melting salt pump, steam generator and steam generating system；Slot type Ji Rejingchang's
Outlet is respectively connected with oil-salt heat exchanger conduction oil side first interface via conduction oil opening and closing pipeline one and steam generator
Heat release side entrance is connected；The cold side outlet manifold of steam generator is two-way, all the way via conduction oil opening and closing pipeline two and oil-
The conduction oil side second interface of salt heat exchanger is connected, and another way is connected with the entrance of Heat-transfer Oil Pump；The outlet manifold of Heat-transfer Oil Pump
For two-way, it is connected all the way via conduction oil opening and closing pipeline four with the entrance of slot type Ji Rejingchang, another way is opened and closed via conduction oil
Pipeline three is connected with oil-salt heat exchanger conduction oil side second interface；Conduction oil opens and closes pipeline two and opens and closes pipe via conduction oil
Lu Sanyu conduction oil opening and closing pipeline four is connected, so that the outlet of Heat-transfer Oil Pump can open and close pipeline three and oil-salt via conduction oil
The conduction oil side second interface of heat exchanger is connected；The outlet of low-temperature molten salt storage tank is pumped via fused salt opening and closing pipeline one and low-temperature molten salt
Entrance be connected；The outlet of low-temperature molten salt pump opens and closes pipeline three with fused salt respectively via fused salt opening and closing pipeline two and fused salt opening and closing is managed
Road five is connected；Fused salt opening and closing pipeline five is connected with the entrance of electric heater, and the outlet of electric heater is successively opened and closed via fused salt and managed
Road six, fused salt opening and closing pipeline ten are connected with the entrance of salt storage tank；Fused salt opens and closes pipeline three and oil-salt heat exchanger fused salt
While side first interface is connected, it is connected via fused salt opening and closing pipeline four with the entrance of low-temperature molten salt storage tank；Oil-salt heat exchanger
Fused salt side second interface splits into two-way, all the way successively via fused salt opening and closing pipeline nine, fused salt opening and closing pipeline ten and high-temperature molten salt
The entrance of storage tank is connected, and another way is connected via fused salt opening and closing pipeline eight with the outlet of high-temperature melting salt pump；High-temperature melting salt pump enters
Mouth is connected via fused salt opening and closing pipeline seven with the outlet of salt storage tank；The heat absorption side outlet of steam generator and steam-electric power
The entrance of system is connected, and the outlet of steam generating system is connected with the heat absorption side entrance of steam generator.
Preferably, reheater is equipped in the steam generating system.
Preferably, the adjusting bypass being connected in the outlet setting one of the electric heater with the low-temperature molten salt storage tank.
A kind of another technical solution of the invention trough photovoltaic power generation system complementary there is provided light, electricity
Electrically heated operation method is used on daytime, which comprises the following steps:
It closes conduction oil and opens and closes pipeline three, it is ensured that conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil open
Stopped pipe road four is in the open state, and the high temperature heat conductive oil after slot type Ji Rejingchang heating splits into two-way, enters oil-all the way
Salt heat exchanger exchanges heat with fused salt, and another way enters steam generator and exchanges heat with water supply, and two-way is by after cooling low
Warm conduction oil enters slot type Ji Rejingchang by Heat-transfer Oil Pump after converging and continues cycling through；
Fused salt is opened and closed pipeline four, fused salt opening and closing pipeline seven and fused salt opening and closing pipeline eight to close, it is ensured that fused salt opens and closes pipeline
One, fused salt opening and closing pipeline two, fused salt opening and closing pipeline three, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt open and close pipeline nine
And fused salt opening and closing pipeline ten is in the open state, high-temperature molten salt air pump inoperative at this time, the low-temperature molten salt warp in low-temperature molten salt storage tank
It crosses low-temperature molten salt pump to draw, splits into two-way, enter oil-salt heat exchanger all the way and exchange heat with conduction oil, another way enters electricity
Heater is heated, and high-temperature molten salt of the two-way after heating stores after converging to salt storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system
Power generation, condensed water supply enter steam generator and continue cycling through.
A kind of another technical solution of the invention trough photovoltaic power generation system complementary there is provided light, electricity
Electrically heated operation method is not used on daytime, which comprises the following steps:
It closes conduction oil and opens and closes pipeline three, it is ensured that conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil open
Stopped pipe road four is in the open state, and the high temperature heat conductive oil after slot type Ji Rejingchang heating splits into two-way, enters oil-all the way
Salt heat exchanger exchanges heat with fused salt, and another way enters steam generator and exchanges heat with water supply, and two-way is by after cooling low
Warm conduction oil enters slot type Ji Rejingchang by Heat-transfer Oil Pump after converging and continues cycling through；
Fused salt is opened and closed pipeline four, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt opening and closing pipeline seven and fused salt to open
Stopped pipe road eight is closed, it is ensured that fused salt opens and closes pipeline one, fused salt opening and closing pipeline two, fused salt opening and closing pipeline three, fused salt and opens and closes pipeline nine
And fused salt opening and closing pipeline ten is in the open state, electric heater, high-temperature molten salt air pump inoperative at this time, it is low in low-temperature molten salt storage tank
Temperature molten salt is drawn by low-temperature molten salt pump, is exchanged heat into oil-salt heat exchanger with conduction oil, is stored after heating to high-temperature molten salt
Storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system
Power generation, condensed water supply enter steam generator and continue cycling through.
A kind of another technical solution of the invention trough photovoltaic power generation system complementary there is provided light, electricity
The operation method of electric heater is used at night, which comprises the following steps:
It closes conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil and opens and closes pipeline four, it is ensured that conduction oil opens
Stopped pipe road three is in the open state, and slot type Ji Rejingchang does not work at this time, and low temperature conduction oil is pumped to oil-salt and changed by Heat-transfer Oil Pump
Hot device exchanges heat with fused salt, and the high temperature heat conductive oil after heating enters steam generator and exchanges heat with water supply, after cooling low
Warm conduction oil enters back into Heat-transfer Oil Pump and continues cycling through；
It closes fused salt opening and closing pipeline three and fused salt opens and closes pipeline nine, it is ensured that fused salt opens and closes pipeline one, fused salt opens and closes pipeline two,
Fused salt open and close pipeline four, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt opening and closing pipeline seven, fused salt opening and closing pipeline eight and
Fused salt opening and closing pipeline ten is in the open state, and the fused salt in salt storage tank is pumped to oil-salt heat exchanger by high-temperature melting salt pump
It exchanges heat with conduction oil, low-temperature molten salt after cooling enters the storage of low-temperature molten salt storage tank, and the low temperature in low-temperature molten salt storage tank is molten
Salt is pumped by low-temperature molten salt and is drawn, and is stored after heating into electric heater to salt storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system
Power generation, condensed water supply enter steam generator and continue cycling through.
A kind of another technical solution of the invention trough photovoltaic power generation system complementary there is provided light, electricity
The operation method of electric heater is not used at night, which comprises the following steps:
It closes conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil and opens and closes pipeline four, it is ensured that conduction oil opens
Stopped pipe road three is in the open state, and slot type Ji Rejingchang does not work at this time, and low temperature conduction oil is pumped to oil-salt and changed by Heat-transfer Oil Pump
Hot device exchanges heat with fused salt, and high temperature heat conductive oil enters steam generator and exchanges heat with water supply after heating, low temperature after cooling
Conduction oil enters back into Heat-transfer Oil Pump and continues cycling through；
It closes fused salt opening and closing pipeline one, fused salt opening and closing pipeline two, fused salt opening and closing pipeline three, fused salt and opens and closes pipeline five, fused salt
It opens and closes pipeline six, fused salt opening and closing pipeline nine, fused salt and opens and closes pipeline ten, it is ensured that fused salt opens and closes pipeline four, fused salt opens and closes pipeline seven, molten
Salt opening and closing pipeline eight is in the open state, and low-temperature molten salt pump, electric heater do not work at this time, and high-temperature melting salt pump stores up high-temperature molten salt
Fused salt in tank is pumped to oil-salt heat exchanger and exchanges heat with conduction oil, and low-temperature molten salt after cooling enters low-temperature molten salt storage tank
Storage；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system
Power generation, condensed water supply enter steam generator and continue cycling through.
Light of the present invention, electricity complementary trough photovoltaic power generation system and its operation method, by slot type photo-thermal electricity
It stands and installs electric heater bypass in power generation molten salt energy storage system additional, receive abandonment to abandon the electricity such as light, paddy electricity using electric heater, it can be effective
Ground reduces the abandoning electricity of new energy, plays the role of peak load shifting to power grid；The power of electric heater can be according to off-design point
The height flexible modulation of day intensity of solar radiation increases the energy output of off-design point day, improves slot type photo-thermal power station
Operational flexibility and economy；Opening and closing electric heater bypass does not influence former trough photovoltaic power generation system, high system safety.
Detailed description of the invention
Fig. 1 is the trough photovoltaic power generation system capital equipment connection schematic diagram of light of the present invention, electricity complementation；
Fig. 2 is light of the present invention, electric complementary trough photovoltaic power generation system in the case where daytime is using electric heater operating condition
System schematic；
Fig. 3 is light of the present invention, electric complementary trough photovoltaic power generation system in the case where daytime is without using electric heater operating condition
System schematic；
The trough photovoltaic power generation system that Fig. 4 is light of the present invention, electricity is complementary is used at night under electric heater operating condition
System schematic；
The trough photovoltaic power generation system that Fig. 5 is light of the present invention, electricity is complementary is not used at night under electric heater operating condition
System schematic.
In Fig. 2~5, solid line represents the pipeline opened and equipment, and dotted line represents the pipeline closed and equipment.
In Fig. 1~5: 1- slot type Ji Rejingchang；2- oil-salt heat exchanger；3- Heat-transfer Oil Pump；4- low-temperature molten salt storage tank；5- is low
Temperature molten salt pump；6- electric heater；7- salt storage tank；8- high-temperature melting salt pump；9- steam generator；10- steam turbine；11- hair
Motor；12- cooling tower；13- feed pump；A1~A4- conduction oil opens and closes pipeline；B1~B10 fused salt opens and closes pipeline.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
As shown in Figure 1, the trough photovoltaic power generation system complementary the present invention provides a kind of light, electricity, including slot type collection heat mirror
1, oil-salt heat exchanger 2, Heat-transfer Oil Pump 3, low-temperature molten salt storage tank 4, low-temperature molten salt pump 5, electric heater 6, salt storage tank 7,
High-temperature melting salt pump 8, steam generator 9, steam turbine 10, generator 11, cooling tower 12, feed pump 13, conduction oil open and close pipeline A1
~A4, fused salt open and close pipeline B1~B10.
One end of the outlet connection conduction oil opening and closing pipeline A1 of slot type collection heat mirror field 1, conduction oil open and close the another of pipeline A1
The pipeline flow dividing of end connection is two-way, is connected all the way with oil-salt heat exchanger 2 conduction oil side first interface, another way and steam
The heat release side entrance of generator 9 is connected.The cold side outlet manifold of steam generator 9 is two-way, is opened and closed all the way via conduction oil
Pipeline A2 is connected with oil-salt heat exchanger 2 conduction oil side second interface, and another way is connected with the entrance of Heat-transfer Oil Pump 3.Conduction oil
The outlet manifold of pump 3 is two-way, is connected all the way via conduction oil opening and closing pipeline A4 with the entrance of slot type collection heat mirror field 1, another way
It is connected with conduction oil opening and closing pipeline A3, conduction oil opens and closes pipeline A4 and opens and closes pipeline via conduction oil opening and closing pipeline A3 connection conduction oil
A2.The outlet of low-temperature molten salt storage tank 4 is connected via fused salt opening and closing pipeline B1 with the entrance of low-temperature molten salt pump 5.Low-temperature molten salt pump 5
One end of outlet connection fused salt opening and closing pipeline B2, the other end connection fused salt opening and closing pipeline B3 and fused salt of fused salt opening and closing pipeline B2 are opened
Stopped pipe road B5.Fused salt opening and closing pipeline B5 is connected with the entrance of electric heater 6, and the outlet of electric heater 6 is successively opened and closed via fused salt
Pipeline B6, fused salt opening and closing pipeline B10 are connected with the entrance of salt storage tank 7.Fused salt opens and closes pipeline B3 and oil-salt heat exchanger 2
Fused salt side first interface while be connected, be connected via fused salt opening and closing pipeline B4 with the entrance of low-temperature molten salt storage tank 4.Oil-salt
The fused salt side second interface of heat exchanger 2 splits into two-way, successively opens and closes pipeline B10 via fused salt opening and closing pipeline B9, fused salt all the way
It is connected with the entrance of salt storage tank 7, another way is connected via fused salt opening and closing pipeline B8 with the outlet of high-temperature melting salt pump 8.It is high
The entrance of temperature molten salt pump 8 is connected via fused salt opening and closing pipeline B7 with the outlet of salt storage tank 7.The heat absorption of steam generator 9
Side outlet is connected with the entrance of steam turbine 10, and the outlet of steam turbine 10 is connected with the entrance of cooling tower 12, the outlet of cooling tower 12
It is connected with the entrance of feed pump 13, the outlet of feed pump 13 is connected with the heat absorption side entrance of steam generator 9.
When system daytime runs:
1) use electric heating: in thermal conductive oil pipeline, conduction oil opens and closes pipeline A3 and closes, remaining conduction oil opening and closing pipeline is opened
It opens.High temperature heat conductive oil after slot type collection heat mirror field 1 is heated splits into two-way, enter all the way oil-salt heat exchanger 2 and fused salt into
Row heat exchange, another way enter steam generator 9 and exchange heat with water supply, and two-way passes through after low temperature conduction oil after cooling converges
Heat-transfer Oil Pump 3 is crossed to continue cycling through into slot type collection heat mirror field 1.In molten salt pipeline, fused salt opens and closes pipeline B4, B7, B8 and closes,
Remaining fused salt opening and closing pipeline is opened, and high-temperature melting salt pump 8 does not work, and the low-temperature molten salt in low-temperature molten salt storage tank 4 is by low-temperature molten salt pump 5
It draws, splits into two-way, enter oil-salt heat exchanger 2 all the way and exchange heat with conduction oil, another way enters the progress of electric heater 6
Heating, high-temperature molten salt of the two-way after heating store after converging to salt storage tank 7.In steam generating system, water supply
It is pumped to steam generator 9 by feed pump 13, generates superheated steam after exchanging heat with high temperature heat conductive oil, steam enters steam turbine 10
Enter cooling tower 12 after acting to condense, enters back into feed pump 13 and continue cycling through.
2) do not use electric heating: in thermal conductive oil pipeline, conduction oil opens and closes pipeline A3 and closes, remaining conduction oil opens and closes pipeline
It opens.High temperature heat conductive oil after slot type collection heat mirror field 1 is heated splits into two-way, enters oil-salt heat exchanger 2 and fused salt all the way
It exchanges heat, another way enters steam generator 9 and exchanges heat with water supply, and two-way is after low temperature conduction oil after cooling converges
It is continued cycling through by Heat-transfer Oil Pump 3 into slot type collection heat mirror field 1.In molten salt pipeline, fused salt opens and closes pipeline B4~B8 and closes,
Remaining fused salt opening and closing pipeline is opened, and electric heater 6, high-temperature melting salt pump 8 do not work.Low-temperature molten salt in low-temperature molten salt storage tank 4 passes through
Low-temperature molten salt pump 5 is drawn, and is exchanged heat into oil-salt heat exchanger 2 with conduction oil, is stored after heating to salt storage tank 7.?
In steam generating system, water supply is pumped to steam generator 9 by feed pump 13, steams with overheat is generated after high temperature heat conductive oil heat exchange
Vapour, steam, which enters after steam turbine 10 does work, enters the condensation of cooling tower 12, enters back into feed pump 13 and continues cycling through.
When system is run at night:
1) use electric heater: in thermal conductive oil pipeline, conduction oil opens and closes pipeline A3 and opens, remaining conduction oil opens and closes pipeline
It closes, slot type collection heat mirror field 1 does not work.Low temperature conduction oil is pumped to oil-salt heat exchanger 2 and changed with fused salt by Heat-transfer Oil Pump 3
Heat, the high temperature heat conductive oil after heating enter steam generator 9 and exchange heat with water supply, and low temperature conduction oil after cooling, which enters back into, leads
Hot oil pump 3 continues cycling through.In molten salt pipeline, fused salt opens and closes pipeline B3, B9 and closes, remaining fused salt opens and closes pipeline and opens.High temperature
Fused salt in salt storage tank 7 is pumped to oil-salt heat exchanger 2 and exchanged heat with conduction oil by pump for liquid salts 8, low temperature after cooling
Fused salt enters the storage of low-temperature molten salt storage tank 4, and the low-temperature molten salt in low-temperature molten salt storage tank 4 is drawn by low-temperature molten salt pump 5, adds into electricity
Hot device 6 stores after heating to salt storage tank 7.In steam generating system, water supply is pumped to steam hair by feed pump 13
Superheated steam is generated after raw device 9, with high temperature heat conductive oil heat exchange, steam, which enters after steam turbine 10 does work, enters the condensation of cooling tower 12,
Feed pump 13 is entered back into continue cycling through.
2) do not use electric heater: in thermal conductive oil pipeline, conduction oil opens and closes pipeline A3 and opens, remaining conduction oil opening and closing pipe
Road is closed, and slot type collection heat mirror field 1 does not work.Low temperature conduction oil is pumped to oil-salt heat exchanger 2 to Heat-transfer Oil Pump 3 and fused salt carries out
Heat exchange, high temperature heat conductive oil enters steam generator 9 and exchanges heat with water supply after heating, and low temperature conduction oil after cooling, which enters back into, leads
Hot oil pump 3 continues cycling through.In molten salt pipeline, fused salt opens and closes pipeline B4, B7, B8 and opens, remaining fused salt opens and closes pipeline and closes, low
Temperature molten salt pump 5, electric heater 6 do not work.Fused salt in salt storage tank 7 is pumped to oil-salt heat exchanger by high-temperature melting salt pump 8
2 exchange heat with conduction oil, and low-temperature molten salt after cooling enters the storage of low-temperature molten salt storage tank 4.In steam generating system, water supply
It is pumped to steam generator 9 by feed pump 13, generates superheated steam after exchanging heat with high temperature heat conductive oil, steam enters steam turbine 10
Enter cooling tower 12 after acting to condense, enters back into feed pump 13 and continue cycling through.
A kind of light described in the present embodiment, electricity complementary trough photovoltaic power generation system and its operation method, in slot type photo-thermal
It installs electric heater bypass in the power generation molten salt energy storage system of power station additional, receives abandonment to abandon the electricity such as light, paddy electricity, Ke Yiyou using electric heater
Effect ground reduces the abandoning electricity of new energy, plays the role of peak load shifting to power grid.
In the present embodiment the power of electric heater can according to the height flexible modulation of off-design point day intensity of solar radiation,
The energy output for increasing off-design point day, improves the operational flexibility and economy of slot type photo-thermal power station；Open and close electric heating
Device bypass does not influence former trough photovoltaic power generation system, high system safety.
Claims (7)
1. the complementary trough photovoltaic power generation system of a kind of light, electricity, which is characterized in that including slot type Ji Rejingchang, oil-salt heat exchange
Device, Heat-transfer Oil Pump, low-temperature molten salt storage tank, low-temperature molten salt pump, electric heater, salt storage tank, high-temperature melting salt pump, steam generation
Device and steam generating system；It is led respectively with oil-salt heat exchanger via conduction oil opening and closing pipeline one outlet of slot type Ji Rejingchang
Hot oil side first interface is connected and the heat release side entrance of steam generator is connected；The cold side outlet manifold of steam generator is two
Road is connected via conduction oil opening and closing pipeline two with oil-salt heat exchanger conduction oil side second interface all the way, another way and conduction oil
The entrance of pump is connected；The outlet manifold of Heat-transfer Oil Pump is two-way, all the way via conduction oil opening and closing pipeline four and slot type Ji Rejingchang
Entrance be connected, another way is connected via conduction oil opening and closing pipeline three and oil-salt heat exchanger conduction oil side second interface；It leads
Hot oil opens and closes pipeline two and is connected via conduction oil opening and closing pipeline three with conduction oil opening and closing pipeline four, so that the outlet of Heat-transfer Oil Pump
Pipeline three can be opened and closed via conduction oil to be connected with oil-salt heat exchanger conduction oil side second interface；The outlet of low-temperature molten salt storage tank
It is connected via fused salt opening and closing pipeline one with the entrance that low-temperature molten salt pumps；The outlet of low-temperature molten salt pump divides via fused salt opening and closing pipeline two
Pipeline three is not opened and closed with fused salt and fused salt opening and closing pipeline five is connected；Fused salt opening and closing pipeline five is connected with the entrance of electric heater, electricity
The outlet of heater is successively connected via fused salt opening and closing pipeline six, fused salt opening and closing pipeline ten with the entrance of salt storage tank；It is molten
While salt opening and closing pipeline three is connected with oil-salt heat exchanger fused salt side first interface, pipeline four and low temperature are opened and closed via fused salt
The entrance of fused salt storage tank is connected；Oil-salt heat exchanger fused salt side second interface splits into two-way, successively opens and closes all the way via fused salt
Pipeline nine, fused salt opening and closing pipeline ten are connected with the entrance of salt storage tank, and another way opens and closes pipeline eight and high temperature via fused salt
The outlet of pump for liquid salts is connected；The entrance of high-temperature melting salt pump is connected via fused salt opening and closing pipeline seven with the outlet of salt storage tank；
The heat absorption side outlet of steam generator is connected with the entrance of steam generating system, the outlet of steam generating system and steam generator
Heat absorption side entrance be connected.
2. the complementary trough photovoltaic power generation system of a kind of light as described in claim 1, electricity, it is characterised in that: the steam hair
Reheater is equipped in electric system.
3. the complementary trough photovoltaic power generation system of a kind of light as described in claim 1, electricity, it is characterised in that: add in the electricity
The adjusting bypass that the outlet setting one of hot device is connected with the low-temperature molten salt storage tank.
4. the complementary trough photovoltaic power generation system of a kind of light as claimed in any one of claims 1 to 3, electricity is added on daytime using electricity
The operation method of heat, which comprises the following steps:
It closes conduction oil and opens and closes pipeline three, it is ensured that conduction oil opens and closes pipeline one, conduction oil opening and closing pipeline two and conduction oil opening and closing pipe
Road four is in the open state, and the high temperature heat conductive oil after slot type Ji Rejingchang heating splits into two-way, enters oil-salt all the way and changes
Hot device exchanges heat with fused salt, and another way enters steam generator and exchanges heat with water supply, and two-way is led by low temperature after cooling
Hot oil enters slot type Ji Rejingchang by Heat-transfer Oil Pump after converging and continues cycling through；
Fused salt is opened and closed pipeline four, fused salt opening and closing pipeline seven and fused salt opening and closing pipeline eight to close, it is ensured that fused salt opens and closes pipeline one, melts
Salt opens and closes pipeline two, fused salt opens and closes pipeline three, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt open and close pipeline nine and molten
Salt opening and closing pipeline ten is in the open state, at this time high-temperature molten salt air pump inoperative, and the low-temperature molten salt in low-temperature molten salt storage tank is through too low
Temperature molten salt pump is drawn, and two-way is split into, and is entered oil-salt heat exchanger all the way and is exchanged heat with conduction oil, another way enters electric heating
Device is heated, and high-temperature molten salt of the two-way after heating stores after converging to salt storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system hair
Electricity, condensed water supply enter steam generator and continue cycling through.
5. the complementary trough photovoltaic power generation system of a kind of light as claimed in any one of claims 1 to 3, electricity is on daytime without using electricity
The operation method of heating, which comprises the following steps:
It closes conduction oil and opens and closes pipeline three, it is ensured that conduction oil opens and closes pipeline one, conduction oil opening and closing pipeline two and conduction oil opening and closing pipe
Road four is in the open state, and the high temperature heat conductive oil after slot type Ji Rejingchang heating splits into two-way, enters oil-salt all the way and changes
Hot device exchanges heat with fused salt, and another way enters steam generator and exchanges heat with water supply, and two-way is led by low temperature after cooling
Hot oil enters slot type Ji Rejingchang by Heat-transfer Oil Pump after converging and continues cycling through；
Fused salt is opened and closed into pipeline four, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt opening and closing pipeline seven and fused salt opening and closing pipe
Road eight is closed, it is ensured that fused salt opens and closes pipeline one, fused salt opens and closes pipeline two, fused salt opening and closing pipeline three, fused salt open and close pipeline nine and molten
Salt opening and closing pipeline ten is in the open state, at this time electric heater, high-temperature molten salt air pump inoperative, and the low temperature in low-temperature molten salt storage tank is molten
Salt is drawn by low-temperature molten salt pump, is exchanged heat into oil-salt heat exchanger with conduction oil, and storage to high-temperature molten salt stores up after heating
Tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system hair
Electricity, condensed water supply enter steam generator and continue cycling through.
6. the complementary trough photovoltaic power generation system of a kind of light as claimed in any one of claims 1 to 3, electricity is added using electricity at night
The operation method of hot device, which comprises the following steps:
It closes conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil and opens and closes pipeline four, it is ensured that conduction oil opening and closing pipe
Road three is in the open state, and slot type Ji Rejingchang does not work at this time, and low temperature conduction oil is pumped to oil-salt heat exchanger by Heat-transfer Oil Pump
It exchanges heat with fused salt, the high temperature heat conductive oil after heating enters steam generator and exchanges heat with water supply, and low temperature after cooling is led
Hot oil enters back into Heat-transfer Oil Pump and continues cycling through；
It closes fused salt opening and closing pipeline three and fused salt opens and closes pipeline nine, it is ensured that fused salt opens and closes pipeline one, fused salt opens and closes pipeline two, fused salt
Open and close pipeline four, fused salt opening and closing pipeline five, fused salt opening and closing pipeline six, fused salt opening and closing pipeline seven, fused salt opening and closing pipeline eight and fused salt
Opening and closing pipeline ten is in the open state, and the fused salt in salt storage tank is pumped to oil-salt heat exchanger and led by high-temperature melting salt pump
Hot oil exchanges heat, and low-temperature molten salt after cooling enters the storage of low-temperature molten salt storage tank, the low-temperature molten salt in low-temperature molten salt storage tank by
Low-temperature molten salt pump is drawn, and is stored after heating into electric heater to salt storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system hair
Electricity, condensed water supply enter steam generator and continue cycling through.
7. the complementary trough photovoltaic power generation system of a kind of light as claimed in any one of claims 1 to 3, electricity does not use electricity at night
The operation method of heater, which comprises the following steps:
It closes conduction oil opening and closing pipeline one, conduction oil opening and closing pipeline two and conduction oil and opens and closes pipeline four, it is ensured that conduction oil opening and closing pipe
Road three is in the open state, and slot type Ji Rejingchang does not work at this time, and low temperature conduction oil is pumped to oil-salt heat exchanger by Heat-transfer Oil Pump
It exchanges heat with fused salt, high temperature heat conductive oil enters steam generator and exchanges heat with water supply after heating, and low temperature after cooling is thermally conductive
Oil enters back into Heat-transfer Oil Pump and continues cycling through；
Close fused salt opening and closing pipeline one, fused salt opening and closing pipeline two, fused salt opening and closing pipeline three, fused salt opening and closing pipeline five, fused salt opening and closing
Pipeline six, fused salt opening and closing pipeline nine, fused salt open and close pipeline ten, it is ensured that fused salt opening and closing pipeline four, fused salt opening and closing pipeline seven, fused salt open
Stopped pipe road eight is in the open state, and low-temperature molten salt pump, electric heater do not work at this time, and high-temperature melting salt pump will be in salt storage tank
Fused salt be pumped to oil-salt heat exchanger and exchange heat with conduction oil, low-temperature molten salt after cooling enters the storage of low-temperature molten salt storage tank；
Water supply exchanges heat with high temperature heat conductive oil in a vapor generator, and the superheated steam of generation enters steam generating system hair
Electricity, condensed water supply enter steam generator and continue cycling through.
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