CN113863997A - A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units - Google Patents
A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units Download PDFInfo
- Publication number
- CN113863997A CN113863997A CN202110992618.0A CN202110992618A CN113863997A CN 113863997 A CN113863997 A CN 113863997A CN 202110992618 A CN202110992618 A CN 202110992618A CN 113863997 A CN113863997 A CN 113863997A
- Authority
- CN
- China
- Prior art keywords
- heater
- coal
- molten salt
- power generation
- electric switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K3/00—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein
- F01K3/18—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
- F01K3/186—Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters using electric heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
- F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
- F01K7/44—Use of steam for feed-water heating and another purpose
-
- 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
- F03D9/007—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations the wind motor being combined with means for converting solar radiation into useful energy
-
- 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
- F03D9/10—Combinations of wind motors with apparatus storing energy
- F03D9/18—Combinations of wind motors with apparatus storing energy storing heat
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/002—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release using electrical energy supply
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
- Wind Motors (AREA)
Abstract
本发明公开了一种风力光伏发电辅助燃煤机组灵活性运行系统，包括锅炉、汽轮机、发电机、电网、风力/光伏发电机组、凝汽器、给水泵、给水回热加热器、第一电开关、第二电开关、第三电开关、电加热器、低温熔盐泵、高温储罐、低温储罐、熔盐给水加热器和高温熔盐泵。本系统利用电储热方法降低燃煤机组进网电量，为风力/光伏发电提供进网空间，并且还能将不稳定运行时的风力/光伏发电用于加热储热介质，实现“弃风弃光电量”的消纳；在用电高峰期，储热装置中储存的热量释放至原机组热力系统用来加热给水，同时减少回热加热器级间抽汽，增加汽轮机内蒸汽通流量，实现机组快速升负荷，提高燃煤机组运行的灵活性。
The invention discloses a flexible operation system for a wind photovoltaic power generation auxiliary coal-fired unit, including a boiler, a steam turbine, a generator, a power grid, a wind/photovoltaic generator set, a condenser, a feed water pump, a feed water regenerative heater, a first electric Switch, second electric switch, third electric switch, electric heater, low temperature molten salt pump, high temperature storage tank, low temperature storage tank, molten salt feed water heater and high temperature molten salt pump. This system uses the electric heat storage method to reduce the electricity input of coal-fired units, provides grid space for wind/photovoltaic power generation, and can also use the wind/photovoltaic power generation during unstable operation to heat the heat storage medium, so as to realize "abandoning wind and abandoning electricity". During the peak period of electricity consumption, the heat stored in the heat storage device is released to the thermal system of the original unit to heat the feed water. The unit quickly increases the load and improves the flexibility of coal-fired unit operation.
Description
Technical Field
The invention relates to a flexible operation system of a coal-fired unit, in particular to a flexible operation system of a wind power photovoltaic power generation auxiliary coal-fired unit, which can eliminate wind and light abandonment.
Background
3060, the development of renewable energy is improved unprecedentedly, and the development of renewable energy is energetically trended. However, there are two problems in the utilization of renewable energy sources: firstly, the intermittency and randomness of renewable energy sources affect the operation safety of a power grid; secondly, large-scale renewable energy sources enter a power grid, and the power generation load of the traditional coal-fired unit needs to be reduced. The problem of how to realize the consumption of unstable renewable energy and the promotion of large-scale renewable network access needs to be solved urgently.
The invention provides a flexible operation system of a wind power photovoltaic power generation auxiliary coal-fired unit. Reducing the network-entering electric quantity of the coal-fired unit by utilizing an electric heat storage method, and providing a network-entering space for wind power generation; the wind power/photovoltaic power generation heating heat storage medium in unstable operation is utilized to absorb 'wind and light abandoning electric quantity'; the stored heat is released to the original unit thermodynamic system to heat the water supply in the peak period of power utilization, the steam extraction of the regenerative heater is reduced, the steam through flow in the steam turbine is increased, and the load of the unit is quickly increased. The method realizes the flexible operation of the wind power/photovoltaic power generation auxiliary coal-fired unit.
Disclosure of Invention
The invention aims to provide a transformation scheme for assisting flexible operation of a coal-fired unit in wind power/photovoltaic power generation, which utilizes an electric heat storage technology to reduce the network-entering electric quantity of the coal-fired unit, provides a network-entering space for the wind power/photovoltaic power generation, and can use the wind power/photovoltaic power generation in unstable operation for heating a heat storage medium to realize the consumption of 'wind abandoning/light abandoning electric quantity'; during the peak period of power utilization, the heat stored in the heat storage device is released to the original unit thermodynamic system to heat the water supply, meanwhile, the interstage steam extraction of the regenerative heater is reduced, the steam through flow in the steam turbine is increased, the unit is quickly loaded, and the flexibility of the operation of the wind power/photovoltaic power generation auxiliary coal-fired unit is improved.
The technical solution of the invention is as follows:
the utility model provides a supplementary coal fired unit flexibility operating system of wind-force photovoltaic power generation which characterized in that: the system comprises a boiler 1, a steam turbine 2, a generator 3, a power grid 4, a wind power/photovoltaic generator set 5, a condenser 6, a water feeding pump 7, a water feeding regenerative heater 8, a first electric switch 9, a second electric switch 10, a third electric switch 11, an electric heater 12, a low-temperature molten salt pump 13, a high-temperature storage tank 14, a low-temperature storage tank 15, a molten salt water feeding heater 16 and a high-temperature molten salt pump 17.
The steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the feed water regenerative heater 8 and the water side inlet of the boiler 1; the 2-stage steam extraction of the steam turbine is connected with the steam side of the regenerative feedwater heater 8, and the steam side of the regenerative feedwater heater 8 is connected with the inlet of the condenser 6; the steam turbine 2 is connected with the generator 3 through a shaft;
the outlet of the feed pump 7 is also connected with the water side inlet of the molten salt feed water heater 16, and the water side outlet of the molten salt feed water heater 16 is connected with the water side inlet of the boiler 1;
the generator 3 is connected to the power grid 4 and the third electric switch 11, respectively, and the third electric switch 11 is connected to the electric heater 12.
The wind power/photovoltaic generator set 5 is respectively connected with the first electric switch 9 and the second electric switch 10, the first electric switch 9 is connected with the power grid 4, and the second electric switch 10 is connected with the electric heater 12.
The outlet of the low-temperature storage tank 15 is sequentially connected with the low-temperature molten salt pump 13, the electric heater 12 and the high-temperature storage tank 14; the outlet of the high-temperature storage tank 14 is sequentially connected with the high-temperature molten salt pump 17, the molten salt feed water heater 16 and the low-temperature storage tank 15.
The heat storage medium selected in the high-temperature storage tank 14 and the low-temperature heat storage tank 15 can be molten salt or heat conducting oil, and the working temperature range is 100-350 ℃.
The wind power/photovoltaic generator set 5 is arranged in a plurality of sets.
The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit comprises the following use methods:
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the feed water regenerative heater 8 and the water side inlet of the boiler 1; the 2-stage steam extraction of the steam turbine is connected with the steam side of the regenerative feedwater heater 8, and the steam side of the regenerative feedwater heater 8 is connected with the inlet of the condenser 6; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is connected with the power grid 4; the power generation system of the traditional coal-fired unit is formed;
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the feed water regenerative heater 8 and the water side inlet of the boiler 1; the 2-stage steam extraction of the steam turbine is connected with the steam side of the regenerative feedwater heater 8, and the steam side of the regenerative feedwater heater 8 is connected with the inlet of the condenser 6; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is respectively connected with the power grid 4 and the third electric switch 11, and the third electric switch 11 is connected with the electric heater 12; the outlet of the low-temperature storage tank 15 is sequentially connected with the low-temperature molten salt pump 13, the electric heater 12 and the high-temperature storage tank 14; the deep peak shaving system of the traditional coal-fired unit is formed.
The wind power/photovoltaic generator set 5 is connected with the first electric switch 9, the first electric switch 9 is connected with the power grid 4, and a wind power/photovoltaic power generation system is formed;
the wind power/photovoltaic generator set 5 is connected with the second electric switch 10, and the second electric switch 10 is connected with the electric heater 12; the outlet of the low-temperature storage tank 15 is sequentially connected with the low-temperature molten salt pump 13, the electric heater 12 and the high-temperature storage tank 14; the wind abandoning/light abandoning absorption system is formed;
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the molten salt feed water heater 16 and the water side inlet of the boiler 1; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is connected with the power grid 4; the outlet of the high-temperature storage tank 14 is sequentially connected with the high-temperature molten salt pump 17, the molten salt feed water heater 16 and the low-temperature storage tank 15; the coal-fired unit rapid load-increasing system is formed;
when the coal-fired unit normally operates, the power generation system of the traditional coal-fired unit works;
when the load of the coal-fired unit is reduced and the peak load is regulated, the third electric switch 11 is closed, a power generation system of the traditional coal-fired unit and a deep peak load regulation system of the traditional coal-fired unit work, and the generator generates redundant electric quantity to heat the molten salt in the low-temperature storage tank 15;
when the wind speed or the illumination intensity meets the network access requirement of a wind power/photovoltaic power generation system, the traditional coal-fired unit power generation system and the wind power/photovoltaic power generation system work;
when the wind speed or the illumination intensity cannot meet the grid-entering requirement of the wind power/photovoltaic power generation system and the generated garbage electricity cannot enter the power grid, the first electric switch 9 is switched off, the second electric switch 10 is switched on, the traditional coal-fired unit power generation system and the wind and light abandoning absorption system work, and the garbage electricity is used for heating the molten salt in the low-temperature storage tank 15;
when the coal-fired unit is rapidly loaded, the rapid loading system of the coal-fired unit works, feed water is heated by the molten salt feed water heater 16, interstage steam extraction of the steam turbine 2 is cut off, the feed water regenerative heater 8 does not work, the through flow of steam in the steam turbine 2 is increased, and the load of the unit is rapidly increased.
The invention has the beneficial effects that:
the electric quantity of the coal-fired unit entering the network is reduced by utilizing the electric heat storage technology, the network entering space is provided for wind power/photovoltaic power generation, and the wind power/photovoltaic power generation in unstable operation can be used for heating a heat storage medium, so that the consumption of 'wind abandoning/light abandoning electric quantity' is realized; during the peak period of power utilization, the heat stored in the heat storage device is released to the original unit thermodynamic system to heat the feed water, meanwhile, the interstage steam extraction of the regenerative heater is reduced, the steam through flow in the steam turbine is increased, the unit is quickly loaded, and the flexibility of the operation of the coal-fired unit is improved.
Drawings
FIG. 1 is a schematic flow diagram of a flexible operation system of a wind power photovoltaic power generation auxiliary coal-fired unit provided by the invention;
FIG. 2 is a flow chart of a conventional coal-fired unit power generation system and a wind/photovoltaic power generation system provided by the present invention;
FIG. 3 is a flow chart of a deep peak shaving system of a conventional coal-fired unit according to the present invention;
FIG. 4 is a flow chart of a wind curtailment/light curtailment absorption system provided by the present invention;
FIG. 5 is a flow chart of a rapid load-increasing system of a coal-fired unit provided by the invention.
Main original notation
The system comprises a boiler 1, a steam turbine 2, a generator 3, a power grid 4, a wind power/photovoltaic generator set 5, a condenser 6, a water feeding pump 7, a water feeding regenerative heater 8, a first electric switch 9, a second electric switch 10, a third electric switch 11, an electric heater 12, a low-temperature molten salt pump 13, a high-temperature storage tank 14, a low-temperature storage tank 15, a molten salt water feeding heater 16 and a high-temperature molten salt pump 17.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
Referring to fig. 1, a flow diagram of a flexible operation system of a wind power photovoltaic power generation auxiliary coal-fired unit according to the present invention is shown.
The system comprises a boiler 1, a steam turbine 2, a generator 3, a power grid 4, a wind power/photovoltaic generator set 5, a condenser 6, a water feeding pump 7, a water feeding regenerative heater 8, a first electric switch 9, a second electric switch 10, a third electric switch 11, an electric heater 12, a low-temperature molten salt pump 13, a high-temperature storage tank 14, a low-temperature storage tank 15, a molten salt water feeding heater 16 and a high-temperature molten salt pump 17.
A steam outlet of the boiler 1 is sequentially connected with a steam turbine 2, a condenser 6, a water pump 7, a feed water regenerative heater 8 and a water side inlet of the boiler 1; the interstage steam extraction of the steam turbine 2 is connected with the steam side of a regenerative water supply heater 8, and the steam side of the regenerative water supply heater 8 is connected with the inlet of a condenser 6; the steam turbine 2 is connected with a generator 3 through a shaft;
the outlet of the feed pump 7 is also connected with the water side inlet of the molten salt feed water heater 16, and the water side outlet of the molten salt feed water heater 16 is connected with the water side inlet of the boiler 1;
the generator 3 is connected to the grid 4 and to a third electric switch 11, respectively, the third electric switch 11 being connected to an electric heater 12.
The wind power/photovoltaic generator set 5 is respectively connected with a first electric switch 9 and a second electric switch 10, the first electric switch 9 is connected with the power grid 4, and the second electric switch 10 is connected with the electric heater 12.
The outlet of the low-temperature storage tank 15 is sequentially connected with a low-temperature molten salt pump 13, an electric heater 12 and a high-temperature storage tank 14; the outlet of the high-temperature storage tank 14 is connected with a high-temperature molten salt pump 17, a molten salt feed water heater 16 and a low-temperature storage tank 15 in sequence.
The heat storage medium selected in the high-temperature storage tank 14 and the low-temperature heat storage tank 15 can be molten salt or heat conducting oil.
The wind power/photovoltaic generator set 5 is arranged in a plurality of sets.
As shown in fig. 2, a flow chart of a conventional coal-fired unit power generation system and a wind/photovoltaic power generation system;
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the feed water regenerative heater 8 and the water side inlet of the boiler 1; the 2-stage steam extraction of the steam turbine is connected with the steam side of the regenerative feedwater heater 8, and the steam side of the regenerative feedwater heater 8 is connected with the inlet of the condenser 6; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is connected with the power grid 4; the wind power/photovoltaic generator set 5 is connected with the first electric switch 9, and the first electric switch 9 is connected with the power grid 4; the first electric switch 9 is closed;
as shown in fig. 3, a flow chart of a deep peak shaving system of a traditional coal-fired unit;
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the feed water regenerative heater 8 and the water side inlet of the boiler 1; the 2-stage steam extraction of the steam turbine is connected with the steam side of the regenerative feedwater heater 8, and the steam side of the regenerative feedwater heater 8 is connected with the inlet of the condenser 6; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is respectively connected with the power grid 4 and the third electric switch 11, and the third electric switch 11 is connected with the electric heater 12; the outlet of the low-temperature storage tank 15 is sequentially connected with the low-temperature molten salt pump 13, the electric heater 12 and the high-temperature storage tank 14; the third electric switch 11 is closed;
as shown in fig. 4, a wind curtailment/light curtailment absorption system flow diagram;
the wind power/photovoltaic generator set 5 is connected with the second electric switch 10, and the second electric switch 10 is connected with the electric heater 12; the outlet of the low-temperature storage tank 15 is sequentially connected with the low-temperature molten salt pump 13, the electric heater 12 and the high-temperature storage tank 14; the second electrical switch 10 is closed;
as shown in fig. 5, a flow chart of a rapid load-up system of a coal-fired unit;
the steam outlet of the boiler 1 is sequentially connected with the steam turbine 2, the condenser 6, the water pump 7, the molten salt feed water heater 16 and the water side inlet of the boiler 1; the steam turbine 2 is connected with the generator 3 through a shaft; the generator 3 is connected with the power grid 4; the outlet of the high-temperature storage tank 14 is sequentially connected with the high-temperature molten salt pump 17, the molten salt feed water heater 16 and the low-temperature storage tank 15;
the above embodiments are merely preferred embodiments of the present invention, which are not intended to limit the scope of the present invention, and various changes may be made in the above embodiments of the present invention. All the simple and equivalent changes and modifications made according to the claims and the content of the specification of the present application belong to the protection scope of the claims of the present patent application. The invention has not been described in detail in order to avoid obscuring the invention.
Claims (8)
1. The utility model provides a supplementary coal fired unit flexibility operating system of wind-force photovoltaic power generation which characterized in that: the system comprises a boiler (1), a steam turbine (2), a generator (3), a power grid (4), a wind power/photovoltaic generator set (5), a condenser (6), a water feeding pump (7), a water feeding regenerative heater (8), a first electric switch (9), a second electric switch (10), a third electric switch (11), an electric heater (12), a low-temperature molten salt pump (13), a high-temperature storage tank (14), a low-temperature storage tank (15), a molten salt water feeding heater (16) and a high-temperature molten salt pump (17);
the steam outlet of the boiler (1) is sequentially connected with the steam turbine (2), the condenser (6), the feed pump (7), the feed water regenerative heater (8) and the water side inlet of the boiler (1); the interstage steam extraction of the steam turbine (2) is connected with the steam side of the regenerative feedwater heater (8), and the steam side of the regenerative feedwater heater (8) is connected with the inlet of the condenser (6); the steam turbine (2) is connected with the generator (3) through a shaft;
the outlet of the feed pump (7) is connected with the water side inlet of the molten salt feed water heater (16), and the water side outlet of the molten salt feed water heater (16) is connected with the water side inlet of the boiler (1);
the generator (3) is respectively connected with the power grid (4) and the third electric switch (11), and the third electric switch (11) is connected with the electric heater (12);
the wind power/photovoltaic generator set (5) is respectively connected with the first electric switch (9) and the second electric switch (10), the first electric switch (9) is connected with the power grid (4), and the second electric switch (10) is connected with the electric heater (12);
the outlet of the low-temperature storage tank (15) is sequentially connected with the low-temperature molten salt pump (13), the electric heater (12) and the high-temperature storage tank (14); the outlet of the high-temperature storage tank (14) is sequentially connected with the high-temperature molten salt pump (17), the molten salt feedwater heater (16) and the low-temperature storage tank (15).
2. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 1, characterized in that: the heat storage media selected from the high-temperature storage tank (14) and the low-temperature heat storage tank (15) are molten salt or heat conduction oil.
3. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 1, characterized in that: the wind power/photovoltaic generator set (5) is arranged in a plurality of sets.
4. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to the claims 1 to 3, characterized in that: the use method of the system is as follows:
the steam outlet of the boiler (1) is sequentially connected with the steam turbine (2), the condenser (6), the feed pump (7), the feed water regenerative heater (8) and the water side inlet of the boiler (1); the interstage steam extraction of the steam turbine (2) is connected with the steam side of the regenerative feedwater heater (8), and the steam side of the regenerative feedwater heater (8) is connected with the inlet of the condenser (6); the steam turbine (2) is connected with the generator (3) through a shaft; the generator (3) is connected with the power grid (4); the power generation system of the traditional coal-fired unit is formed;
the steam outlet of the boiler (1) is sequentially connected with the steam turbine (2), the condenser (6), the feed pump (7), the feed water regenerative heater (8) and the water side inlet of the boiler (1); the interstage steam extraction of the steam turbine (2) is connected with the steam side of the regenerative feedwater heater (8), and the steam side of the regenerative feedwater heater (8) is connected with the inlet of the condenser (6); the steam turbine (2) is connected with the generator (3) through a shaft; the generator (3) is respectively connected with the power grid (4) and the third electric switch (11), and the third electric switch (11) is connected with the electric heater (12); the outlet of the low-temperature storage tank (15) is sequentially connected with the low-temperature molten salt pump (13), the electric heater (12) and the high-temperature storage tank (14); the deep peak shaving system of the traditional coal-fired unit is formed;
the wind power/photovoltaic generator set (5) is connected with the first electric switch (9), and the first electric switch (9) is connected with the power grid (4) to form a wind power/photovoltaic power generation system;
the wind power/photovoltaic generator set (5) is connected with the second electric switch (10), and the second electric switch (10) is connected with the electric heater (12); the outlet of the low-temperature storage tank (15) is sequentially connected with the low-temperature molten salt pump (13), the electric heater (12) and the high-temperature storage tank (14); the wind abandoning/light abandoning absorption system is formed;
the steam outlet of the boiler (1) is sequentially connected with the steam turbine (2), the condenser (6), the water pump 7, the molten salt feed water heater (16) and the water side inlet of the boiler (1); the steam turbine (2) is connected with the generator (3) through a shaft; the generator (3) is connected with the power grid (4); the outlet of the high-temperature storage tank (14) is sequentially connected with the high-temperature molten salt pump (17), the molten salt feed water heater (16) and the low-temperature storage tank (15); the coal-fired unit rapid load-increasing system is formed.
5. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 4, characterized in that: when the coal-fired unit normally operates, the power generation system of the traditional coal-fired unit works;
when the load of the coal-fired unit is reduced and the peak load is regulated, the third electric switch (11) is closed, a power generation system of the traditional coal-fired unit and a deep peak load regulation system of the traditional coal-fired unit work, and the generator generates surplus electric quantity to heat the molten salt in the low-temperature storage tank (15).
6. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 4, characterized in that: when the wind speed or the illumination intensity meets the network access requirement of a wind power/photovoltaic power generation system, the traditional coal-fired unit power generation system and the wind power/photovoltaic power generation system work.
7. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 4, characterized in that: when the wind speed or the illumination intensity cannot meet the grid-entering requirement of the wind power/photovoltaic power generation system and the produced garbage electricity cannot enter the power grid, the first electric switch (9) is disconnected, the second electric switch (10) is closed, the traditional coal-fired unit power generation system and the wind/light abandoning absorption system work, and the garbage electricity is used for heating the molten salt in the low-temperature storage tank (15).
8. The flexible operation system of the wind power photovoltaic power generation auxiliary coal-fired unit according to claim 4, characterized in that: when the coal-fired unit rapidly increases the load, the coal-fired unit rapidly increases the load system work, the feed water is heated by the molten salt feed water heater (16), the interstage steam extraction of the steam turbine (2) is cut off, the feed water regenerative heater (8) does not work, the through flow of the steam in the steam turbine (2) is increased, and the unit load rapidly increases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110992618.0A CN113863997A (en) | 2021-08-27 | 2021-08-27 | A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110992618.0A CN113863997A (en) | 2021-08-27 | 2021-08-27 | A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113863997A true CN113863997A (en) | 2021-12-31 |
Family
ID=78988512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110992618.0A Pending CN113863997A (en) | 2021-08-27 | 2021-08-27 | A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113863997A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114810230A (en) * | 2022-05-31 | 2022-07-29 | 西安热工研究院有限公司 | Wind and light combined energy storage power generation and heat supply system and method for steam turbine |
| CN114877305A (en) * | 2022-05-07 | 2022-08-09 | 西安交通大学 | Green power-coal power coupling power generation system and method utilizing renewable energy discarded power |
| CN114962157A (en) * | 2022-05-31 | 2022-08-30 | 西安热工研究院有限公司 | Turbine energy storage power generation and heat supply system and method combined with wind and coal |
| CN116067024A (en) * | 2023-02-07 | 2023-05-05 | 华能国际电力股份有限公司 | Coupling power generation system and operation method thereof |
| PL443515A1 (en) * | 2023-01-17 | 2024-07-22 | Polski Cezary | The layout of the power unit cooperating with the national power system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205823548U (en) * | 2016-07-22 | 2016-12-21 | 华北电力科学研究院(西安)有限公司 | A kind of wind and solar hybrid generating system |
| US20170370250A1 (en) * | 2014-12-31 | 2017-12-28 | Shenzhen Enesoon Science & Technology Co., Ltd. | Combined energy supply system of wind, photovoltaic, solar thermal power and medium-based heat storage |
| CN207960701U (en) * | 2018-03-14 | 2018-10-12 | 西安热工研究院有限公司 | A kind of fired power generating unit fused salt accumulation of heat heat release peak regulation system |
| CN110006026A (en) * | 2019-04-18 | 2019-07-12 | 北京工业大学 | A deep peak shaving system for thermal power plants |
| CN215595790U (en) * | 2021-08-27 | 2022-01-21 | 北京工业大学 | Wind power photovoltaic power generation auxiliary coal-fired unit flexible operation system |
-
2021
- 2021-08-27 CN CN202110992618.0A patent/CN113863997A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170370250A1 (en) * | 2014-12-31 | 2017-12-28 | Shenzhen Enesoon Science & Technology Co., Ltd. | Combined energy supply system of wind, photovoltaic, solar thermal power and medium-based heat storage |
| CN205823548U (en) * | 2016-07-22 | 2016-12-21 | 华北电力科学研究院(西安)有限公司 | A kind of wind and solar hybrid generating system |
| CN207960701U (en) * | 2018-03-14 | 2018-10-12 | 西安热工研究院有限公司 | A kind of fired power generating unit fused salt accumulation of heat heat release peak regulation system |
| CN110006026A (en) * | 2019-04-18 | 2019-07-12 | 北京工业大学 | A deep peak shaving system for thermal power plants |
| CN215595790U (en) * | 2021-08-27 | 2022-01-21 | 北京工业大学 | Wind power photovoltaic power generation auxiliary coal-fired unit flexible operation system |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114877305A (en) * | 2022-05-07 | 2022-08-09 | 西安交通大学 | Green power-coal power coupling power generation system and method utilizing renewable energy discarded power |
| CN114810230A (en) * | 2022-05-31 | 2022-07-29 | 西安热工研究院有限公司 | Wind and light combined energy storage power generation and heat supply system and method for steam turbine |
| CN114962157A (en) * | 2022-05-31 | 2022-08-30 | 西安热工研究院有限公司 | Turbine energy storage power generation and heat supply system and method combined with wind and coal |
| CN114810230B (en) * | 2022-05-31 | 2023-11-03 | 西安热工研究院有限公司 | Energy storage, power generation and heat supply system and method of turbine combined with wind and light |
| PL443515A1 (en) * | 2023-01-17 | 2024-07-22 | Polski Cezary | The layout of the power unit cooperating with the national power system |
| WO2024153983A1 (en) * | 2023-01-17 | 2024-07-25 | Polski Cezary | Power unit system cooperating with the national power system |
| PL246503B1 (en) * | 2023-01-17 | 2025-02-03 | Cezary Polski | The layout of the power unit cooperating with the national power system |
| CN116067024A (en) * | 2023-02-07 | 2023-05-05 | 华能国际电力股份有限公司 | Coupling power generation system and operation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113863997A (en) | A flexible operation system for wind photovoltaic power generation auxiliary coal-fired units | |
| CN215595790U (en) | Wind power photovoltaic power generation auxiliary coal-fired unit flexible operation system | |
| CN114216108A (en) | A hybrid heating molten salt heat storage and peak regulation system | |
| CN106907203A (en) | The air compressed energy-storage and generating integrated system of wind light mutual complementing | |
| CN102562504A (en) | Wind energy-solar energy combined energy storage generating system | |
| CN108533467A (en) | A kind of slot type of power regulation, tower photo-thermal and photovoltaic can heat accumulation electricity generation systems | |
| CN215676608U (en) | Fused salt energy storage electric power peak regulation system | |
| CN103670548A (en) | Heat and power cogeneration central heating system based on heat pump | |
| CN209558703U (en) | Photovoltaic and photo-thermal hybrid power generation system | |
| CN110486107A (en) | The supercritical carbon dioxide electricity generation system and method for joint supercritical Water Oxidation Technology | |
| CN103673031A (en) | System capable of greatly lowering combined heat and power generation centralized heating temperature | |
| CN114151777A (en) | A molten salt heat storage peak regulation and alternative start boiler system | |
| CN215174935U (en) | High-low temperature heat storage peak shaving system of thermal power plant | |
| CN111140445A (en) | Combined cooling, heating and power supply system with gas-steam combined cycle | |
| CN113756893A (en) | A flexible adjustment system for the joint operation of multi-power plants and multi-units | |
| CN113833541A (en) | A fast peak shaving system for auxiliary coal-fired units that absorbs abandoned wind and abandoned light | |
| CN215170237U (en) | Flexible peak shaving system of thermal power plant based on heat storage | |
| CN215176096U (en) | Solar photovoltaic photo-thermal hybrid power generation system | |
| CN115045810A (en) | A light-nuclear-storage power generation system and working method for nuclear power peak regulation | |
| CN203718884U (en) | Heat-pump-based combined heat and power generation centralized heating system | |
| CN203685320U (en) | System for greatly reducing central heating temperature of heat and power cogeneration | |
| CN206073213U (en) | A kind of thermoelectricity stored energy distribution formula heating system | |
| CN215595787U (en) | Fast peak regulation system of auxiliary coal-fired unit for eliminating wind and light abandonment | |
| CN201246193Y (en) | Thermal storage power generating apparatus utilizing solar energy and air heat energy extraction technology | |
| CN202928202U (en) | Waste heat recovery type distributed energy and urban trunk sewage source heat pump coupling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211231 |
|
| RJ01 | Rejection of invention patent application after publication |