CN106089338B - A kind of back pressure machine association system and method adjusting heat supply and power generation - Google Patents
A kind of back pressure machine association system and method adjusting heat supply and power generation Download PDFInfo
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- CN106089338B CN106089338B CN201610385205.5A CN201610385205A CN106089338B CN 106089338 B CN106089338 B CN 106089338B CN 201610385205 A CN201610385205 A CN 201610385205A CN 106089338 B CN106089338 B CN 106089338B
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- 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
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
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- 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
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2220/00—Components of central heating installations excluding heat sources
- F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
Abstract
The invention discloses a kind of back pressure machine association systems and method adjusting heat supply and power generation, and system includes back pressure thermal power plant unit, boiler energy storage for thermal sub-system and adiabatic compression air energy storage subsystem.In heat supply low ebb, unit oepration at full load, extra heat supply first heats heat-storage medium after low-pressure turbine power generation, reheats moisturizing energy storage in boiler；At heat supply peak, moisturizing is changed to the hot water in boiler, increases external heating load；When heat demand is between 25 DEG C of rated heating capacities corresponding with 95 DEG C of moisturizing temperature, reasonable feed temperature is calculated and set, adjusts water supply automatic controller so that unit oepration at full load.When low power consumption, extra electric energy is compressed into storage, the heat generated in compression process is absorbed by moisturizing；When peak of power consumption, the air of compression absorbs the heat in heat storage can, and expansion power generation increases generated energy.The present invention can not only ensure that unit efficient stable is run, while also can adjust power generation according to power demand.
Description
Technical field
The invention belongs to heat supplies and technical field of power generation, specifically relate to a kind of back pressure machine adjusting heat supply and power generation
Association system and method.
Background technology
With industrial development and improvement of living standard, the production and life in China are also more and more with vapour.Steam power plant carries on the back
The directly external heat supply of press group steam discharge, theoretically, the temperature-decreased pressure reducer that puts into operation when external heating load is more than back pressure machine heating load supply
Heat, and back pressure unit under-capacity operation when thermal load demands are smaller, but to be that some steam power plant's back pressure units are chronically at low for present situation
Load operation operating mode so that back pressure type cogeneration of heat and power benefit is difficult to embody.
The principle of back pressure unit is electricity determining by heat, and thermic load directly determines electric load, this just makes electric load be difficult to adjust.Add
Country's large area shut down small-sized extraction and condensing unit, encourage development back pressure unit to coagulate thermal power plant unit with large-scale take out, this just makes power grid tune
Peak energy power is more insufficient.The difficulty of peak load regulation network greatly increases, and also causes limitation to the utilization of other energy, thermoelectricity unit is such as
What, which participates in peak regulation, becomes power industry problem in the urgent need to address.In order to ensure back pressure unit efficient stable is run, some heat
Power plant takes installs the operation of postposition machine or the measure of energy-storage system additional such as after back pressure unit, ensure that back pressure thermal power plant unit is full
Load operation, but unit generation remains maximum generating watt at this time, causes to generate dump energy, peak of power consumption when low power consumption
When output it is insufficient, mismatch, adjust difficult with practical power demand.
Invention content
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of back ofs the body adjusting heat supply and power generation
Press association system and method.The system ensures the long-term oepration at full load of back pressure unit, increases external heating load when with hot peak,
Heat supply degree of amplitude modulation is improved, thermic load fluctuation is reduced and adjusts section, back pressure machine is reduced by adiabatic compression air energy storage subsystem
Group coupled thermomechanics effect, power generation is more neatly adjusted according to power demand.
To achieve the above object, present invention employs following technical schemes：A kind of back pressure machine connection adjusting heat supply and power generation
Collaboration is united, including back pressure thermal power plant unit, boiler energy storage are for thermal sub-system and adiabatic compression air energy storage subsystem.
The back pressure thermal power plant unit includes boiler, main steam turbine, main generator, oxygen-eliminating device, feed pump, temperature-decreased pressure reducer and
High-pressure heater；The output end of the boiler is divided into two branches, wherein a branch passes through main steam line and main steam turbine
Main inlet throttle-stop valve connects, the input terminal that in addition a branch passes through temperature-decreased pressure reducer and heat user
Connection；The main steam turbine is connect with main generator, and the oxygen-eliminating device is connected with main steam turbine steam discharge heats moisturizing,
The high-pressure heater is connected by feed pump with deaerator feedwater end, and the high-pressure heater output end is inputted with boiler feedwater
End is connected, and output end hot water is sent into boiler economizer.
The boiler energy storage includes the first vapor-water heat exchanger, the second vapor-water heat exchanger, cold water storage cistern, hot water for thermal sub-system
Case, water supply automatic controller, water supply pump, heat-exchanger pump, low-pressure turbine, energy-reserving generator；Moisturizing conveyance conduit all the way with cold water
The water inlet of case is connected, and another way is sequentially connected the first vapor-water heat exchanger, the second vapor-water heat exchanger, boiler；Water supply is controlled automatically
Device water inlet end processed is connected with cold water storage cistern, hot water tank outlet simultaneously, and water supply automatic controller water outlet intakes with oxygen-eliminating device
Mouth is connected.
The heat that the moisturizing chemically come between waterwheel generates during absorbing compressed gas in the first vapor-water heat exchanger, just
The moisturizing for walking heating becomes 95 DEG C of heat in the second vapor-water heat exchanger with the steam discharge mixed heat transfer after the medium in heating heat storage can
Water is stored in boiler.
The adiabatic compression air energy storage subsystem includes compressor, the first vapor-water heat exchanger, air accumulator, heat storage can and swollen
Swollen generating equipment, the medium in the heat storage can are the high-temperature phase-change energy storage material of such as fuse salt or composite material.
A method of the back pressure machine association system adjusting heat supply and power generation includes the following steps：
1）With heat demand low-valley interval, ensure main steam turbine oepration at full load, is supplied with heat user meeting power plant itself
After heat demand, remaining steam discharge first passes through low-pressure turbine power generation, heats energy-accumulating medium subsequently into heat storage can, finally enters second
The moisturizing of entrance is mixed and heated to 95 DEG C, is stored in boiler, controlled at this time by water supply automatic controller by vapor-water heat exchanger
Moisturizing into oxygen-eliminating device is 25 DEG C of cold water of cold water storage cistern；
2）With heat demand peak period, the control of water supply automatic controller into oxygen-eliminating device moisturizing by 25 DEG C of cold water storage cistern
Moisturizing is changed to 95 DEG C of hot water of boiler, reduces oxygen-eliminating device and heats steam consumption, increases external heating load；
3）It is being less than the rated heating capacity of 95 DEG C of moisturizing with heat demand and is being more than the rated heating capacity period of 25 DEG C of moisturizing,
According to back pressure unit thermodynamic behaviour, back pressure unit oepration at full load is set in water supply automatic controller and matches extraneous heat supply
The feed temperature of load, when actual motion, enter the hot water and cool water quantity of water supply automatic controller according to the set value calculation, make
Obtain heat supply back pressure machine oepration at full load；
4）It is also to use heat demand low-valley interval at this time, providing auxiliary power amount passes through compressor compresses sky in the low power consumption period
The heat absorption that gas energy storage generates in air accumulator, air compression process is in the moisturizing by the first vapor-water heat exchanger.
5）Also it is non-heat supply low-valley interval, all external heat supplies of main steam turbine steam discharge, low pressure at this time in the peak of power consumption period
Steam turbine is out of service, and energy-accumulating medium stops heat absorption in heat storage can, and compressed air is after the energy-accumulating medium heating in heat storage can
Become high temperature and high pressure gas, electricity production when expansion power generation increases Peak power use.
Usual electricity consumption reaches unanimity substantially with hot peak interval of time, by system work process it is found that due to compressed air mistake
The heat release in the first vapor-water heat exchanger in journey, with steam discharge heat accumulation when hot low ebb in heat storage can and boiler, boiler energy-storage system
It is relatively independent with adiabatic compression air energy storage systems, therefore have very well when electricity consumption is asynchronous with heat demand peak valley
Matching.
The method of the present invention compared with the prior art, has the advantages that：
（1）System provided by the invention ensure unit at full capacity stable operation, meet external heating load, reduce thermic load
While fluctuation adjusts section, electricity consumption can be more neatly adjusted according to electrical load requirement.
（2）System provided by the invention can reduce back pressure unit coupled thermomechanics effect, keep heat supply cleverer with electricity consumption
It adjusts livingly.
（3）The heat absorption generated in air compression process absorbs when moisturizing to be heated, compressed air expansion power generation
Energy-accumulating medium heat adjusts the hotspot stress of back pressure unit to a certain extent.
（4）Heat supply and electrification energy storage regulating system are relatively independent, and electricity consumption also has when asynchronous with heat demand peak interval of time
Preferable applicability.
Description of the drawings
Fig. 1 is the structural schematic diagram for the back pressure machine association system that the present invention adjusts heat supply and power generation；
Fig. 2 is certain steam power plant's summer typical case's day thermic load curve graph shown in embodiment 1；
Fig. 3 is steam power plant shown in embodiment 1 using the confession heat flow curve graph after association system；
Fig. 4 is that steam power plant's power generation shown in embodiment 1 adjusts schematic diagram with power demand.
The explanation of Fig. 1 main appended drawing references：1 boiler；2 temperature-decreased pressure reducers；3. main steam turbine；4 main generators；5 heat users；
6 low-pressure turbines；7 energy-reserving generators；8 oxygen-eliminating devices；9 feed pumps；10 high-pressure heaters；11 compressors；12 first steam-water heat exchangings
Device；13 air accumulators；14 heat storage cans；15 expansion power generation equipment；16 second vapor-water heat exchangers；17 boilers；18 heat-exchanger pumps；19 water supply
Automatic controller；20 water supply pumps；21 cold water storage cisterns.
Specific implementation mode
Below in conjunction with the accompanying drawings, by specific implementation mode, the invention will be further described.
Referring to Fig.1, the present invention provides a kind of back pressure machine association system adjusting heat supply and power generation, including back pressure heat supply machine
Group, boiler energy storage are for thermal sub-system and adiabatic compression air energy storage subsystem.
The back pressure thermal power plant unit includes boiler 1, main steam turbine 3, main generator 4, and oxygen-eliminating device 8, feed pump 9, desuperheat subtract
Depressor 2 and high-pressure heater 10；The output end of the boiler 1 is divided into two branches, wherein a branch passes through main steam line
It is connect with 3 main inlet throttle-stop valve of main steam turbine, in addition a branch is connect by temperature-decreased pressure reducer 2 with the input terminal of heat user 5；The master
Steam turbine 3 is connect with main generator 4, and the oxygen-eliminating device 8 is connected with 3 steam discharge of main steam turbine heats demineralized water, the hyperbaric heating
Device 10 is connected with oxygen-eliminating device 8 to water end (W.E.) by feed pump 9,10 output end of the high-pressure heater and 1 water supply input terminal phase of boiler
Even, output end hot water is sent into boiler economizer.
The boiler energy storage includes the first vapor-water heat exchanger 12, the second vapor-water heat exchanger 16, cold water storage cistern for thermal sub-system
21, boiler 17, water supply automatic controller 19, water supply pump 20, heat-exchanger pump 18, low-pressure turbine 6, energy-reserving generator 7；Demineralized water
Conveyance conduit is connected with the water inlet of cold water storage cistern 21 all the way, and another way is sequentially connected the first vapor-water heat exchanger 12, the second carbonated drink is changed
Hot device 16, boiler 17,19 water inlet end of water supply automatic controller is connected with cold water storage cistern 21,17 water outlet of boiler simultaneously, described
19 water outlet of water supply automatic controller is connected with 8 water inlet of oxygen-eliminating device.
The heat that the moisturizing chemically come between waterwheel generates during absorbing compressed gas in the first vapor-water heat exchanger 12,
Preliminarily heated moisturizing becomes in the second vapor-water heat exchanger 16 with the steam discharge mixed heat transfer after the medium in heating heat storage can 14
95 DEG C of hot water are stored in boiler 17.
The adiabatic compression air energy storage subsystem includes compressor 11, the first vapor-water heat exchanger 12, air accumulator 13, heat accumulation
Tank 14 and expansion power generation equipment 15, the medium in the heat storage can 14 are the high-temperature phase-change energy storage of such as fuse salt or composite material
Material, the medium are only being heated with hot low-valley interval by the steam discharge of low-pressure turbine 6, remaining period stops absorbing heat and heats compression
The compressed air expansion of air, high temperature and pressure increases generated energy.
A method of the back pressure machine association system adjusting heat supply and power generation includes the following steps：
1）With heat demand low-valley interval, ensure main steam turbine oepration at full load, is supplied with heat user meeting power plant itself
After heat demand, remaining steam discharge first passes through low-pressure turbine power generation, heats energy-accumulating medium subsequently into heat storage can, finally enters second
The moisturizing of entrance is mixed and heated to 95 DEG C, is stored in boiler, controlled at this time by water supply automatic controller by vapor-water heat exchanger
Moisturizing into oxygen-eliminating device is 25 DEG C of cold water of cold water storage cistern；
2）With heat demand peak period, the control of water supply automatic controller into oxygen-eliminating device moisturizing by cold water storage cistern
25 DEG C of moisturizings be changed to 95 DEG C of hot water of boiler, reduce oxygen-eliminating device and heat steam consumption, increase external heating load；
3）It is being less than the rated heating capacity of 95 DEG C of moisturizing with heat demand and is being more than the rated heating capacity period of 25 DEG C of moisturizing,
According to back pressure unit thermodynamic behaviour, back pressure unit oepration at full load is set in water supply automatic controller and matches extraneous heat supply
The feed temperature of load, when actual motion, enter the hot water and cool water quantity of water supply automatic controller according to the set value calculation, make
Obtain heat supply back pressure machine oepration at full load；
4）It is also to use heat demand low-valley interval at this time, providing auxiliary power amount passes through compressor compresses sky in the low power consumption period
The heat absorption that gas energy storage generates in air accumulator, air compression process is in the moisturizing by the first vapor-water heat exchanger.
5）Also it is non-heat supply low-valley interval, all external heat supplies of main steam turbine steam discharge, low pressure at this time in the peak of power consumption period
Steam turbine is out of service, and heat storage can energy-accumulating medium stops heat absorption, and compressed air becomes after the energy-accumulating medium heating in heat storage can
At high temperature and high pressure gas, electricity production when expansion power generation increases peak of power consumption.
Usual heat supply reaches unanimity substantially with power generation peak interval of time, by system work process it is found that during compressed air
The heat release in the first vapor-water heat exchanger 12, with steam discharge energy storage when hot low ebb in heat storage can 14 and boiler 17, since boiler stores up
Energy system and adiabatic compression air energy storage systems are relatively independent, therefore have when electricity consumption is asynchronous with heat demand peak valley
There is good matching.
Embodiment 1
With reference to Fig. 2, the present invention is illustrated with the summer of certain steam power plant typical day thermic load curve, is specifically described back pressure machine joint
System heat supply and power generation adjustment process, for other steam power plants, operation logic is identical.
Certain 3 rated generation power of steam power plant's main steam turbine is 15MW, exhaust parameter 1.27MPa, 292.7 DEG C, with heat need
It asks and is up to 144.5t/h, minimum 82.7t/h.When demineralized water moisturizing is 25 DEG C, external heat supply 111.4t/h；Work as demineralized water
When moisturizing is 95 DEG C, external heat supply 125.6t/h.When being changed to 95 DEG C of hot water by 25 DEG C of cold water into the moisturizing of oxygen-eliminating device 8, externally
Heating load increases 14.2t/h.
In Fig. 2,23 when next day 6, and the rated heating capacity of main steam turbine 3 when moisturizing is 25 DEG C is less than with heat demand, this
When be heat supply low-valley interval.The desalination that the moisturizing of the control of water supply automatic controller 19 into oxygen-eliminating device 8 is 25 DEG C in cold water storage cistern 21
Water ensures that unit oepration at full load, 3 extra steam discharge of main steam turbine enter low pressure back pressure machine 6 and generate electricity, and generated output is
2.5MW, 6 steam discharge of low pressure back pressure machine heat energy-accumulating medium in heat storage can 14, finally mixed with moisturizing in the second vapor-water heat exchanger 16
Conjunction is heated to 95 DEG C and is stored in boiler 17
In.The period is also the low power consumption period, and main generator 4 is 17.5MW with 7 generated output of energy-reserving generator.
In Fig. 2,6 when 7,17 when 23, in the period heat demand be less than 95 DEG C of moisturizing rated heating capacity and
Rated heating capacity of 25 DEG C more than moisturizing, the hot water entered according to set value calculation when water supply automatic controller 19 is run at this time
And cool water quantity, back pressure unit oepration at full load, and meet at this time use heat demand.
In Fig. 2,7 when 17, which is heat supply peak period, and the control of water supply automatic controller 19 enters oxygen-eliminating device 8
Moisturizing be 95 DEG C of hot water in boiler 17, insufficient heating load is compensated by regulating units.Low-pressure turbine 6 is in non-heat supply
Low-valley interval is out of service, and energy-accumulating medium stops heat absorption in heat storage can 14.
Fig. 3 is the summer typical day confession heat flow curve using main steam turbine 3 after association system, and dotted line is that peak regulation compensation supplies
Heat, before using association system operation compared with, reduce the frequent start-stop of regulating units during heat supply, peak regulation section from
33.1t/h falls below 18.9t/h, ensure that the operation steady in a long-term of unit.
Fig. 4 is the power generation of summer typical day and power demand adjusts schematic diagram, and curve 1 is operation adiabatic compression air energy storage
System power generation curve before subsystem, curve 2 are summer typical day power demand curves.20 when next day 6, which is to use
Electric low-valley interval, main generator 4 are 17.5MW with 7 generated output of energy-reserving generator, and electricity production is superfluous at this time, enable compressed air storage
Energy subsystem, compressed air are stored in air accumulator 13.6 when 20 be the peak of power consumption period, is compressed in air accumulator 13 at this time
Air become high temperature and high pressure gas after the energy-accumulating medium heating in heat storage can 14, expansion power generation produces electricity when increasing peak of power consumption
Amount.
Electricity consumption object is electricity consumer around steam power plant in Fig. 4, and back pressure machine association system electricity production at this time is not surfed the Internet, and thermoelectricity is met
The flexible modulation to power demand is realized in electricity consumer demand around factory, on the spot production and marketing.For other steam power plants, when steam power plant is sent out
When electricity online, compressed-air energy storage subsystem is run, electricity production has larger adjusting section, when more steam power plant's back pressure units are all adopted
Run with association system mode and generate electricity online when, can increase and produce electricity adjustable section, slow down the difficulty that power grid electric load is adjusted.Figure
2 with Fig. 4 it is found that heat supply peak interval of time and electricity consumption peak interval of time are substantially synchronous, due to boiler heat supply energy storage subsystem with it is adiabatic
Compressed-air energy storage subsystem is relatively independent, and present invention shows preferable applicabilities.
In implementation process of the present invention, back pressure unit remains oepration at full load, is increased when with hot peak externally
Heating load is reduced between heat fluctuation regulatory region；Dump energy, peak of power consumption are generated when preferably reducing low power consumption simultaneously
When output deficiency situation, more flexibly according to heat demand adjust electricity consumption, give a kind of back pressure thermal power plant unit association system
The regulating system and method for heat supply and power generation.
Heretofore described specific implementation mode is only the preferable case study on implementation of the present invention, is not used for limiting this hair
Bright practical range.Under the premise of not departing from the principle of the invention with content, several improvement can also be made, these
Improvement also should be regarded as protection scope of the present invention.
Claims (1)
1. based on the adjusting method for the back pressure machine association system for adjusting heat supply and power generation, the back pressure of the adjusting heat supply and power generation
Machine association system, including back pressure thermal power plant unit, boiler energy storage are for thermal sub-system and adiabatic compression air energy storage subsystem；
The back pressure thermal power plant unit includes boiler, main steam turbine, main generator, oxygen-eliminating device, feed pump, temperature-decreased pressure reducer and high pressure
Heater；The output end of the boiler is divided into two branches, wherein a branch passes through main steam line and the main vapour of main steam turbine
Door connects, and in addition a branch passes through the input terminal of temperature-decreased pressure reducer and heat user and connects；The main steam turbine and main generator
Connection, the oxygen-eliminating device is connected with main steam turbine steam discharge heats moisturizing, and the high-pressure heater is given by feed pump and oxygen-eliminating device
Water end (W.E.) is connected, and the high-pressure heater output end is connected with boiler feedwater input terminal, and the output end hot water of high-pressure heater is sent into
Boiler economizer；
The boiler energy storage for thermal sub-system include the first vapor-water heat exchanger, the second vapor-water heat exchanger, cold water storage cistern, boiler,
Water supply automatic controller, water supply pump, heat-exchanger pump, low-pressure turbine, energy-reserving generator；Moisturizing conveyance conduit all the way with cold water storage cistern
Water inlet is connected, and another way is sequentially connected the first vapor-water heat exchanger, the second vapor-water heat exchanger, boiler, water supply automatic controller
Water inlet end is connected with cold water storage cistern, hot water tank outlet simultaneously, water supply automatic controller water outlet and oxygen-eliminating device water inlet phase
Even；
The adiabatic compression air energy storage subsystem includes compressor, the first vapor-water heat exchanger, air accumulator, heat storage can and expansion hair
Electric equipment；The boiler energy storage is in thermal sub-system, the moisturizing chemically come between waterwheel absorbs in the first vapor-water heat exchanger
The heat generated during compressed gas, preliminarily heated moisturizing in the second vapor-water heat exchanger with the medium in heating heat storage can
Steam discharge mixed heat transfer afterwards becomes 95 DEG C of hot water and is stored in boiler;
Medium in the heat storage can is high-temperature phase-change energy storage material；
It is characterized in that：Include the following steps：
Step（1）, with heat demand low-valley interval, ensure main steam turbine oepration at full load, meeting power plant itself and heat user
After heat demand, remaining steam discharge first passes through low-pressure turbine power generation, heats energy-accumulating medium subsequently into heat storage can, finally enters the
The moisturizing of entrance is mixed and heated to 95 DEG C, is stored in boiler by two vapor-water heat exchangers, at this time by water supply automatic controller control
The moisturizing of system into oxygen-eliminating device is 25 DEG C of cold water of cold water storage cistern；
Step（2）, with heat demand peak period, the control of water supply automatic controller into oxygen-eliminating device moisturizing by the 25 of cold water storage cistern
DEG C moisturizing is changed to 95 DEG C of hot water of boiler；
Step（3）, with heat demand be less than 95 DEG C of moisturizing rated heating capacity and more than 25 DEG C of moisturizing the rated heating capacity period,
According to back pressure unit thermodynamic behaviour, back pressure unit oepration at full load is set in water supply automatic controller and matches extraneous heat supply
The feed temperature of load, when actual motion, enter the hot water and cool water quantity of water supply automatic controller according to the set value calculation, make
Obtain heat supply back pressure machine oepration at full load；
Step（4）, in the low power consumption period, be also to use heat demand low-valley interval at this time, providing auxiliary power amount passes through compressor compresses
The heat absorption that air energy storage generates in air accumulator, air compression process is in the moisturizing by the first vapor-water heat exchanger;
Step（5）, in the peak of power consumption period, be also non-heat supply low-valley interval at this time, all external heat supplies of main steam turbine steam discharge are low
Press steam turbine out of service, energy-accumulating medium stops heat absorption in heat storage can, and the compressed air in air accumulator is by the storage in heat storage can
It can become high temperature and high pressure gas, electricity production when expansion power generation increases peak of power consumption after medium heating.
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