CN113339775A - Thermal power deep peak regulation system and peak regulation method based on boiler side heat storage - Google Patents
Thermal power deep peak regulation system and peak regulation method based on boiler side heat storage Download PDFInfo
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- CN113339775A CN113339775A CN202110675008.8A CN202110675008A CN113339775A CN 113339775 A CN113339775 A CN 113339775A CN 202110675008 A CN202110675008 A CN 202110675008A CN 113339775 A CN113339775 A CN 113339775A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
- F22B33/185—Combinations of steam boilers with other apparatus in combination with a steam accumulator
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- 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
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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
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B35/00—Control systems for steam boilers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
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Abstract
The invention provides a thermal power deep peak regulation system and a peak regulation method based on boiler side heat storage, which relate to the technical field of thermal power generation and comprise a boiler, a steam turbine, a water supply system, a main steam heat storage system and a reheat steam heat storage system; during deep peak shaving, the boiler operates under the lowest load, steam entering the steam turbine controls the lowest flow, surplus main steam enters the main steam heat storage system through a bypass, the cooled main steam is decompressed through the decompression valve and then returns to a reheat steam inlet of the boiler, the safe operation of the reheat steam system of the boiler is ensured, and the surplus reheat steam enters the reheat steam heat storage system for heat storage and finally becomes water to return to the water supply system; the invention can realize the deep peak regulation function of the thermal power generating unit, the minimum output load of the thermal power generating unit can be reduced to below 10 percent from the conventional 30 percent, even zero output, and when the boiler and the steam turbine are maintained to operate in the minimum load state and the power grid needs the load lifting of the thermal power generating unit, the thermal power deep peak regulation system can quickly respond.
Description
Technical Field
The invention belongs to the technical field of thermal power generation, and particularly relates to a thermal power deep peak regulation system and a peak regulation method based on boiler side heat storage.
Background
On the premise of ensuring the quality of electric energy and the safe and stable operation of equipment, peak regulation and energy saving are always important in power grid planning. With the carbon peak reaching and carbon neutralization ideas and policies, a large proportion of new energy power generation amount needs to be consumed by a power grid, and the thermal power generating unit needs to perform deep peak regulation power generation according to the scheduling of the power grid.
At present, the technical transformation of thermoelectric decoupling and deep peak regulation of thermoelectric units has been developed on a large scale in northeast China, and the technical route adopted by the method is as follows: in the stage of peak regulation, surplus electric power of the unit is used for heating solid heat storage media such as magnesia bricks and the like through an electric boiler, so that an energy storage process is realized; when the peak regulation is not needed, the heat stored in the heat storage medium is released through the air and is transferred to a heat supply system for use, so that the heating steam extraction of the generator set is reduced, and the energy release process is realized.
Although the technical route meets the technical requirement of peak shaving of the unit, the adopted heat-electricity-heat energy conversion mode causes waste of a large amount of heat energy, and the energy storage efficiency is only 35-45%.
In a plurality of thermal power deep peak regulation schemes, deep peak regulation by utilizing the low-load operation characteristics of main machine equipment such as a boiler and a steam turbine of a thermal power generating unit is the preferred peak regulation scheme of most power plants. However, when the unit is operated at low load, the thermal economy and safety of the unit are obviously reduced. In addition, in the case of low-load operation of the unit, it is more difficult to perform variable-load operation. Therefore, how to realize the deep peak shaving of the thermal power generating unit and ensure the safe, stable and economic operation of the system is a problem to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a thermal power depth peak regulation system and a thermal power depth peak regulation method based on boiler side heat storage, so as to solve the problems in the background technology.
In order to solve the technical problem, the invention provides a thermal power depth peak regulation system based on boiler side heat storage, which comprises a boiler, a steam turbine, a water supply system, a main steam heat storage system and a reheat steam heat storage system, wherein a plurality of valves are arranged between the main steam heat storage system and the reheat steam heat storage system;
the steam turbine comprises a steam turbine high-pressure cylinder and a steam turbine intermediate-pressure cylinder; because the thermal power deep peak regulation system for heat storage at the boiler side is only described, the connection relation of other subsequent equipment such as a low-pressure cylinder of the steam turbine is not described, the connection relation of the middle-pressure cylinder of the steam turbine and the rear end of a water supply system is also not described, and the thermal power deep peak regulation can be realized by the same method as the prior art or by changing the structure applicability according to the application;
the boiler comprises a main steam outlet, a reheat steam inlet, a reheat steam outlet and a water inlet;
the steam turbine high-pressure cylinder and the steam turbine intermediate-pressure cylinder both comprise a steam inlet and a steam outlet;
the main steam heat storage system and the reheat steam heat storage system both comprise a high-temperature side interface and a low-temperature side interface;
a main steam outlet of the boiler is respectively connected with a steam inlet of the high-pressure cylinder of the steam turbine and a high-temperature side interface of the main steam heat storage system; a reheat steam outlet of the boiler is respectively connected with a steam inlet of the steam turbine intermediate pressure cylinder and a high-temperature side interface of the reheat steam heat storage system; a reheat steam inlet of the boiler is respectively connected with a steam exhaust port of the high-pressure cylinder of the steam turbine and a low-temperature side interface of the main steam heat storage system; the water inlet of the boiler is connected with the water outlet of the water supply system; and a low-temperature side interface of the reheat steam heat storage system is connected with the water supply system.
The main steam heat storage system is used for storing sensible heat of main steam, and the reheat steam heat storage system is used for storing sensible heat of reheat steam and phase change latent heat of a condensation process.
Further, the main steam outlet of boiler with set up valve one between the steam inlet of steam turbine high pressure cylinder, the main steam outlet of boiler with set up valve two between the high temperature side interface of main steam heat-retaining system, the reheat steam outlet of boiler with set up valve three between the steam inlet of steam turbine intermediate pressure cylinder, set up valve four between the reheat steam outlet of boiler and the high temperature side interface of reheat steam heat-retaining system, the low temperature side interface of main steam heat-retaining system with set up valve five between the reheat steam inlet of boiler, the low temperature side interface of reheat steam heat-retaining system with set up valve six between the water supply system.
A plurality of necessary valves are arranged among the boiler, the steam turbine, the water supply system, the main steam heat storage system and the reheat steam heat storage system and are used for adjusting the steam flow entering the steam turbine during the deep peak shaving period of the boiler so as to adjust the generating load of the thermal power generating unit, and therefore the deep peak shaving of the thermal power generating unit is achieved.
Furthermore, a valve five arranged between a low-temperature side interface of the main steam heat storage system and a reheat steam inlet of the boiler is a pressure reducing valve.
The steam pressure at the interface of the low-temperature side of the main steam heat storage system is reduced through a pressure reducing valve, so that the safe operation of the boiler reheating steam system is ensured.
Furthermore, the heat storage technical routes of the main steam heat storage system and the reheat steam heat storage system are one of solid heat storage, phase change heat storage and molten salt heat storage, or the combination of any two of the heat storage technical routes is used.
Furthermore, the main steam heat storage system and the reheat steam heat storage system are respectively provided with a set of electric heat storage devices, or one of the heat storage systems is provided with an electric heat storage device.
And the heat storage temperature of the main steam heat storage system and/or the reheat steam heat storage system is further increased by utilizing surplus electric power except the service power generated by the unit during the deep peak shaving period, so that the zero output of the unit is realized.
Furthermore, a low-temperature side interface of the reheat steam heat storage system is connected with an outlet of a deaerator of the water supply system.
The water supply system is a whole device from the outlet of the deaerator to the inlet of the boiler economizer and a pipeline system thereof, and has the main functions that the pressure of condensed water in a water tank of the deaerator is increased through a water pump, the condensed water is further heated by a high-pressure heater to meet the requirement of boiler water supply, and the condensed water is conveyed to the inlet of the boiler economizer to be used as the water supply of the boiler.
The method for carrying out peak shaving by utilizing the thermal power deep peak shaving system based on boiler side heat storage comprises the following steps:
during deep peak shaving: the boiler operates at the lowest load, the opening degrees of the first valve and the second valve are adjusted, a small amount of main steam is controlled to enter a high-pressure cylinder of the steam turbine, the lowest steam inlet quantity of the high-pressure cylinder of the steam turbine is ensured, the rest main steam enters a main steam heat storage system for energy storage, and the cooled main steam and the exhaust steam of the high-pressure cylinder of the steam turbine return to a reheat steam inlet of the boiler; adjusting the opening degree of the third valve and the fourth valve, controlling a small amount of reheated steam to enter a steam turbine intermediate pressure cylinder, ensuring the minimum steam inlet quantity of the steam turbine intermediate pressure cylinder, enabling the residual reheated steam to enter a reheated steam heat storage system for energy storage, and condensing the reheated steam after temperature reduction into water to return to a water supply system;
during non-depth peak shaving: and closing the second valve, the fourth valve, the fifth valve and the sixth valve, fully opening the first valve and the third valve, enabling the boiler and the steam turbine to work normally, enabling the heat stored in the main steam heat storage system and the reheat steam heat storage system to be used in a steam turbine heat regeneration system, and enabling the thermal power depth peak regulation system to respond quickly.
Further, the heat stored by the main steam heat storage system and the reheat steam heat storage system during the deep peak shaving period is used for external heating or steam supply, and the heat used by the turbine heat recovery system or generated steam returns to the turbine for power generation during the normal operation of the unit.
Has the advantages that:
(1) the invention provides a thermal power depth peak regulation system based on boiler side heat storage, which comprises a boiler, a steam turbine, a water supply system, a main steam heat storage system and a reheat steam heat storage system, wherein the main steam heat storage system is connected with the reheat steam heat storage system; the deep peak regulation function of the thermal power generating unit can be realized, and the lowest output load of the unit can be reduced from conventional 30% to below 10% or even zero output;
(2) according to the thermal power deep peak regulation system based on boiler side heat storage, high-temperature heat energy in main steam is stored by the main steam heat storage system and then returns to a reheat steam inlet of a boiler through pressure relief operation, so that safe and stable operation of the reheat steam system of the boiler during deep peak regulation can be guaranteed;
(3) according to the thermal power deep peak regulation system based on boiler side heat storage, when a boiler and a steam turbine are maintained to operate in the lowest load state and a power grid needs a unit to carry load, the thermal power deep peak regulation system can respond quickly;
(4) according to the thermal power deep peak regulation system based on boiler side heat storage, a heat-heat energy storage scheme is adopted, compared with a heat-electricity-heat technical route in the prior art, the energy storage efficiency is improved by more than one time, and the maximum utilization of energy in the deep peak regulation process is realized.
The conception, the specific structure and the technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, the features and the effects of the present invention.
Drawings
Fig. 1 is a schematic structural diagram of a thermal power depth peak shaving system based on boiler side heat storage.
Detailed Description
The invention will be further illustrated with reference to specific embodiments. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
In the drawings, structurally identical elements are represented by like reference numerals, and structurally or functionally similar elements are represented by like reference numerals throughout the several views. The size and thickness of each component shown in the drawings are arbitrarily illustrated, and the present invention is not limited to the size and thickness of each component. The thickness of the components may be exaggerated where appropriate in the figures to improve clarity.
Example (b):
in a preferred embodiment, as shown in fig. 1, a thermal power deep peak shaving system based on boiler side heat storage is provided, which comprises a boiler, a steam turbine, a water supply system, a main steam heat storage system and a reheat steam heat storage system, and a plurality of valves are arranged between the boiler, the steam turbine, the water supply system, the main steam heat storage system and the reheat steam heat storage system;
the steam turbine comprises a steam turbine high-pressure cylinder and a steam turbine intermediate-pressure cylinder; because the thermal power deep peak regulation system for heat storage at the boiler side is only described, the connection relation of other subsequent equipment such as a low-pressure cylinder of the steam turbine is not described, the connection relation of the middle-pressure cylinder of the steam turbine and the rear end of a water supply system is also not described, and the thermal power deep peak regulation can be realized by the same method as the prior art or by changing the structure applicability according to the application;
the boiler comprises a main steam outlet, a reheat steam inlet, a reheat steam outlet and a water inlet;
the steam turbine high-pressure cylinder and the steam turbine intermediate-pressure cylinder both comprise a steam inlet and a steam outlet;
the main steam heat storage system and the reheat steam heat storage system both comprise a high-temperature side interface and a low-temperature side interface;
a main steam outlet of the boiler is respectively connected with a steam inlet of the high-pressure cylinder of the steam turbine and a high-temperature side interface of the main steam heat storage system; a reheat steam outlet of the boiler is respectively connected with a steam inlet of the steam turbine intermediate pressure cylinder and a high-temperature side interface of the reheat steam heat storage system; a reheat steam inlet of the boiler is respectively connected with a steam exhaust port of the high-pressure cylinder of the steam turbine and a low-temperature side interface of the main steam heat storage system; the water inlet of the boiler is connected with the water outlet of the water supply system; and a low-temperature side interface of the reheat steam heat storage system is connected with the water supply system.
The main steam heat storage system is used for storing sensible heat of main steam, and the reheat steam heat storage system is used for storing sensible heat of reheat steam and phase change latent heat of a condensation process.
The main steam outlet of boiler with set up valve one between the steam inlet of steam turbine high pressure cylinder, the main steam outlet of boiler with set up valve two between the high temperature side interface of main steam heat-retaining system, the reheat steam outlet of boiler with set up valve three between the steam inlet of steam turbine intermediate pressure cylinder, set up valve four between the reheat steam outlet of boiler and the high temperature side interface of reheat steam heat-retaining system, the low temperature side interface of main steam heat-retaining system with set up valve five between the reheat steam inlet of boiler, the low temperature side interface of reheat steam heat-retaining system with set up valve six between the water supply system. In fig. 1, the first valve, the second valve, the third valve, the fourth valve, the fifth valve and the sixth valve are respectively represented by V1 to V6.
A plurality of necessary valves are arranged among the boiler, the steam turbine, the water supply system, the main steam heat storage system and the reheat steam heat storage system and are used for adjusting the steam flow entering the steam turbine during the deep peak shaving period of the boiler so as to adjust the generating load of the thermal power generating unit, and therefore the deep peak shaving of the thermal power generating unit is achieved.
And a fifth valve arranged between a low-temperature side interface of the main steam heat storage system and a reheat steam inlet of the boiler is a pressure reducing valve.
The steam pressure at the interface of the low-temperature side of the main steam heat storage system is reduced through a pressure reducing valve, so that the safe operation of the boiler reheating steam system is ensured.
The heat storage technical routes of the main steam heat storage system and the reheat steam heat storage system are one of solid heat storage, phase change heat storage and molten salt heat storage, or the combination of any two of the heat storage technical routes is used.
The main steam heat storage system and the reheat steam heat storage system are respectively provided with a set of electric heat storage devices, or one of the heat storage systems is provided with an electric heat storage device.
In this embodiment, the main steam heat storage system adopts a set of fused salt heat storage equipment, and increases a set of electric heater unit for consume the unnecessary electric power beyond the station service electricity that the unit sent, further improve the heat-retaining temperature of main steam heat storage system realizes the zero output of thermal power unit.
The reheat steam heat storage system adopts a set of phase change heat storage equipment.
And a low-temperature side interface of the reheat steam heat storage system is connected with an outlet of a deaerator of the water supply system.
The water supply system is a whole device from the outlet of the deaerator to the inlet of the boiler economizer and a pipeline system thereof, and has the main functions that the pressure of condensed water in a water tank of the deaerator is increased through a water pump, the condensed water is further heated by a high-pressure heater to meet the requirement of boiler water supply, and the condensed water is conveyed to the inlet of the boiler economizer to be used as the water supply of the boiler.
The method for carrying out peak shaving by utilizing the thermal power deep peak shaving system based on boiler side heat storage comprises the following steps:
during deep peak shaving: the boiler operates at the lowest load of 30%, the opening degrees of the first valve and the second valve are adjusted, a small amount of main steam is controlled to enter a high-pressure cylinder of the steam turbine, the lowest steam inlet quantity of the high-pressure cylinder of the steam turbine is guaranteed, the rest main steam enters a main steam heat storage system, low-temperature molten salt is heated to a high-temperature state and stored, and the cooled main steam is returned to a reheat steam inlet of the boiler together with exhaust steam of the high-pressure cylinder of the steam turbine after being reduced to the pressure range of the reheat steam inlet through a pressure release valve; adjusting the opening degree of the third valve and the fourth valve, controlling a small amount of reheated steam to enter a steam turbine intermediate pressure cylinder, ensuring the minimum steam inlet quantity of the steam turbine intermediate pressure cylinder, enabling the rest of reheated steam to enter a reheated steam heat storage system, enabling the phase-change material to be changed from a solid state to a liquid state for energy storage, condensing the reheated steam after cooling into water, mixing the water with water at the outlet of a deaerator of a water supply system, then entering a subsequent pressurization system, a high pressure system and the like, and returning to the water supply system; the electric heating device further improves the temperature of the molten salt by utilizing the surplus power which is generated by the unit and exceeds the service power, and realizes zero output of the thermal power unit.
During the unit deep peak shaving, the boiler operates under the designed lowest load, steam entering the steam turbine is controlled to be the lowest flow required by safe and stable operation, surplus main steam enters the main steam heat storage system through a bypass, the cooled main steam is decompressed through the decompression valve and then returns to a reheat steam inlet of the boiler, the safe operation of the reheat steam system of the boiler is guaranteed, the surplus reheat steam enters the reheat steam heat storage system for heat storage, and finally the surplus reheat steam is changed into water and returns to the water supply system.
During non-depth peak shaving: and closing a second valve, a fourth valve, a fifth valve and a sixth valve, fully opening a first valve and a third valve, normally operating the boiler and the steam turbine, using the heat stored by the main steam heat storage system and the reheat steam heat storage system for a steam turbine heat regeneration system to replace high-pressure steam extraction of the steam turbine, increasing the output capacity of the unit under the same load, and realizing the utilization of the energy stored during deep peak shaving. In the process, the thermal power deep peak shaving system can quickly respond to meet the power grid requirement.
The heat stored by the main steam heat storage system and the reheat steam heat storage system during the deep peak shaving period is used for external heating or steam supply, and the heat used by the turbine heat recovery system or generated steam returns to the turbine for power generation during the normal operation of the unit.
Claims (8)
1. A thermal power depth peak regulation system based on boiler side heat storage is characterized by comprising a boiler, a steam turbine, a water supply system, a main steam heat storage system and a reheat steam heat storage system, wherein a plurality of valves are arranged between the boiler, the steam turbine, the water supply system, the main steam heat storage system and the reheat steam heat storage system;
the steam turbine comprises a steam turbine high-pressure cylinder and a steam turbine intermediate-pressure cylinder;
a main steam outlet of the boiler is respectively connected with a steam inlet of the high-pressure cylinder of the steam turbine and a high-temperature side interface of the main steam heat storage system; a reheat steam outlet of the boiler is respectively connected with a steam inlet of the steam turbine intermediate pressure cylinder and a high-temperature side interface of the reheat steam heat storage system; a reheat steam inlet of the boiler is respectively connected with a steam exhaust port of the high-pressure cylinder of the steam turbine and a low-temperature side interface of the main steam heat storage system; the water inlet of the boiler is connected with the water outlet of the water supply system; and a low-temperature side interface of the reheat steam heat storage system is connected with the water supply system.
2. The thermal power depth peak-shaving system based on boiler side heat storage as claimed in claim 1, wherein a first valve is arranged between a main steam outlet of the boiler and a steam inlet of a high-pressure cylinder of the steam turbine, a second valve is arranged between the main steam outlet of the boiler and a high-temperature side interface of the main steam heat storage system, a third valve is arranged between a reheat steam outlet of the boiler and a steam inlet of a medium-pressure cylinder of the steam turbine, a fourth valve is arranged between a reheat steam outlet of the boiler and a high-temperature side interface of the reheat steam heat storage system, a fifth valve is arranged between a low-temperature side interface of the main steam heat storage system and a reheat steam inlet of the boiler, and a sixth valve is arranged between a low-temperature side interface of the reheat steam heat storage system and the water supply system.
3. The thermal power depth peaking system based on boiler side heat storage according to claim 2, wherein a valve five arranged between a low temperature side interface of the main steam heat storage system and a reheat steam inlet of the boiler is a pressure reducing valve.
4. The thermal power depth peaking system based on boiler side heat storage according to claim 2, wherein the heat storage technical routes of the main steam heat storage system and the reheat steam heat storage system are one of solid heat storage, phase change heat storage and molten salt heat storage, or a combination of any two of the heat storage technical routes is used.
5. The thermal power depth peaking system based on boiler side heat storage according to claim 4, wherein one or both of the main steam heat storage system and the reheat steam heat storage system are provided with one set of electric heat storage device.
6. The thermal power depth peaking system based on boiler side heat storage according to claim 2, wherein a low temperature side interface of the reheat steam heat storage system is connected with an outlet of an oxygen remover of the feedwater system.
7. The method for carrying out peak shaving by using the thermal power deep peak shaving system based on boiler side heat storage according to any one of claims 2-6, wherein during deep peak shaving: the boiler operates at the lowest load, the opening degrees of the first valve and the second valve are adjusted, a small amount of main steam is controlled to enter a high-pressure cylinder of the steam turbine, the lowest steam inlet quantity of the high-pressure cylinder of the steam turbine is ensured, the rest main steam enters a main steam heat storage system for energy storage, and the cooled main steam and the exhaust steam of the high-pressure cylinder of the steam turbine return to a reheat steam inlet of the boiler; adjusting the opening degree of the third valve and the fourth valve, controlling a small amount of reheated steam to enter a steam turbine intermediate pressure cylinder, ensuring the minimum steam inlet quantity of the steam turbine intermediate pressure cylinder, enabling the residual reheated steam to enter a reheated steam heat storage system for energy storage, and condensing the reheated steam after temperature reduction into water to return to a water supply system;
during non-depth peak shaving: and closing the second valve, the fourth valve, the fifth valve and the sixth valve, fully opening the first valve and the third valve, normally operating the boiler and the steam turbine, and using the heat stored in the main steam heat storage system and the reheat steam heat storage system for a heat recovery system of the steam turbine.
8. The peak shaving method according to claim 7, wherein the heat stored in the main steam heat storage system and the reheat steam heat storage system during the deep peak shaving is used for external heating or steam supply, and the heat used by the turbine heat recovery system during the normal operation of the unit or the generated steam is returned to the turbine for power generation.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017148A (en) * | 2021-11-23 | 2022-02-08 | 河北鲲能电力工程咨询有限公司 | Peak regulation method for large coal-electricity steam heat storage power generation |
| CN114183742A (en) * | 2021-12-07 | 2022-03-15 | 北京工业大学 | Reheating steam extraction and heat storage combined denitration load reduction system |
| CN114592929A (en) * | 2022-03-04 | 2022-06-07 | 西安热工研究院有限公司 | Stepped heat storage system and method for deep peak shaving of coal-electric unit |
| CN116191573A (en) * | 2023-04-28 | 2023-05-30 | 北京国能国源能源科技有限公司 | Electric power peak shaving system based on data processing |
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2021
- 2021-06-17 CN CN202110675008.8A patent/CN113339775A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114017148A (en) * | 2021-11-23 | 2022-02-08 | 河北鲲能电力工程咨询有限公司 | Peak regulation method for large coal-electricity steam heat storage power generation |
| CN114017148B (en) * | 2021-11-23 | 2024-05-28 | 河北鲲能电力工程咨询有限公司 | Large-scale coal-to-electricity steam heat storage power generation peak shaving method |
| CN114183742A (en) * | 2021-12-07 | 2022-03-15 | 北京工业大学 | Reheating steam extraction and heat storage combined denitration load reduction system |
| CN114592929A (en) * | 2022-03-04 | 2022-06-07 | 西安热工研究院有限公司 | Stepped heat storage system and method for deep peak shaving of coal-electric unit |
| CN114592929B (en) * | 2022-03-04 | 2023-09-29 | 西安热工研究院有限公司 | Gradient heat storage system and method for coal motor group depth peak shaving |
| CN116191573A (en) * | 2023-04-28 | 2023-05-30 | 北京国能国源能源科技有限公司 | Electric power peak shaving system based on data processing |
| CN116191573B (en) * | 2023-04-28 | 2023-06-30 | 北京国能国源能源科技有限公司 | Electric power peak shaving system based on data processing |
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