CN210629115U - Flywheel energy storage frequency modulation system capable of reducing main steam throttling - Google Patents
Flywheel energy storage frequency modulation system capable of reducing main steam throttling Download PDFInfo
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- CN210629115U CN210629115U CN201921377078.XU CN201921377078U CN210629115U CN 210629115 U CN210629115 U CN 210629115U CN 201921377078 U CN201921377078 U CN 201921377078U CN 210629115 U CN210629115 U CN 210629115U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model discloses a flywheel energy storage frequency modulation system for reducing main steam throttling, which comprises a boiler, a high-pressure regulating gate, a high-pressure cylinder, a medium-pressure cylinder, a low-pressure cylinder, a generator, a flywheel energy storage device and an electric network; the outlet of the boiler is communicated with the inlet of the high-pressure cylinder through the high-pressure regulating valve, the outlet of the high-pressure cylinder is communicated with the inlet of the intermediate-pressure cylinder through the reheating side of the boiler, the outlet of the intermediate-pressure cylinder is communicated with the inlet of the low-pressure cylinder, the generator is connected with the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder, the output end of the flywheel energy storage device and the output end of the generator are connected in parallel and then connected with the power grid, and the system can effectively improve the economical efficiency and the load.
Description
Technical Field
The utility model belongs to thermal power generation technology peak shaving field relates to a reduce flywheel energy storage frequency modulation system of main steam throttle.
Background
In recent years, the installed capacity of new energy electric power such as wind power, photovoltaic and hydropower in China is continuously and rapidly increased, and the new energy provides a large amount of clean electric power for people and simultaneously brings great challenges to the safe operation and power supply guarantee of a power grid. In some areas, the problems of wind abandoning, light abandoning and water abandoning are serious. The method is influenced by the problems of low-load stable combustion, dry-wet state conversion and the like of the conventional thermal power generating unit and the factors of the operation mode of the heat supply unit for fixing the power with the heat and the like, the deep peak regulation capability of the thermal power generating unit in China is insufficient, the difference with the foreign unit exists, the national energy supply bureau notifies the requirements, the peak regulation potential of the thermal power generating unit is excavated, the operation flexibility of the thermal power in China is improved, and the new energy consumption capability is improved. The peak regulation capacity of a conventional thermal power generating unit is mainly limited by the load variation capacity, so that the rapid load variation capacity becomes the key point of the current flexible modification.
At present, the frequency modulation of the unit is mostly completed by adopting a mode of greatly throttling a high-pressure throttle, the mode has a large influence on the economy of the unit and is not favorable for the national requirements on energy-saving and emission-reducing policies of thermal power units.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a flywheel energy storage frequency modulation system who reduces main steam throttle, this system can the effectual economic nature that improves the unit operation and become the load capacity.
In order to achieve the above purpose, the flywheel energy storage frequency modulation system for reducing main steam throttling of the utility model comprises a boiler, a high pressure regulating gate, a high pressure cylinder, a medium pressure cylinder, a low pressure cylinder, a generator, a flywheel energy storage device and an electric network;
the outlet of the boiler is communicated with the inlet of the high-pressure cylinder through a high-pressure regulating valve, the outlet of the high-pressure cylinder is communicated with the inlet of the intermediate-pressure cylinder through the reheating side of the boiler, the outlet of the intermediate-pressure cylinder is communicated with the inlet of the low-pressure cylinder, the generator is connected with the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder, and the output end of the flywheel energy storage device and the output end of the generator are connected with the power grid after being.
The generator, the high-pressure cylinder, the intermediate-pressure cylinder and the low-pressure cylinder are coaxially arranged.
The output end of the flywheel energy storage device is connected with the input end of the rectifying device, and the output end of the rectifying device is connected with the power grid.
The utility model discloses following beneficial effect has:
when the flywheel energy storage frequency modulation system for reducing the throttling of the main steam is in specific operation, the high-pressure regulating valve keeps a larger opening degree under normal conditions, the economical efficiency of the daily operation of the unit is improved, and the flywheel energy storage device operates at a set rotating speed to ensure that the frequency modulation can be dealt with at any time; when the unit needs to be lifted quickly and the low load is reduced to meet a primary frequency modulation instruction, the opening degree of a high-pressure regulating valve is increased, the steam amount entering a steam turbine is increased, the output of the unit is lifted, meanwhile, the rotating speed of the flywheel energy storage device is reduced, the electric quantity is released to a power grid through a rectifying device, the power load on the power grid is increased, and the power grid requirement is responded quickly; when the unit needs to reduce the load fast, reduce the aperture of high-pressure governing door, reduce the steam volume that enters into the high-pressure jar, in order to reduce the load of unit, flywheel energy memory passes through rectifier and absorbs the electric quantity from the output of generator, in order to improve self rotational speed stored energy, reduce the net electric load, thereby utilize high-pressure governing door and flywheel energy memory to combine together, in order to realize the quick adjustment of load, the economic nature of system and variable load ability are stronger, and simple structure, high durability and convenient operation, the investment is less, the practicality is extremely strong, the variable load speed of generating set is fast, satisfy the unit to the needs of frequency modulation and peak shaving.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a high pressure cylinder, 2 is a high pressure valve, 3 is a medium pressure cylinder, 4 is a low pressure cylinder, 5 is a generator, 6 is a rectifying device, 7 is a flywheel energy storage device, and 8 is a power grid.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the flywheel energy storage frequency modulation system for reducing main steam throttling of the present invention includes a boiler, a high pressure throttle 2, a high pressure cylinder 1, an intermediate pressure cylinder 3, a low pressure cylinder 4, a generator 5, a flywheel energy storage device 7 and a power grid 8; the outlet of the boiler is communicated with the inlet of a high-pressure cylinder 1 through a high-pressure regulating valve 2, the outlet of the high-pressure cylinder 1 is communicated with the inlet of an intermediate-pressure cylinder 3 through the reheating side of the boiler, the outlet of the intermediate-pressure cylinder 3 is communicated with the inlet of a low-pressure cylinder 4, a generator 5 is connected with the high-pressure cylinder 1, the intermediate-pressure cylinder 3 and the low-pressure cylinder 4, and the output end of a flywheel energy storage device 7 and the output end of the generator 5 are connected with a power grid 8 after being.
The generator 5, the high-pressure cylinder 1, the intermediate pressure cylinder 3 and the low-pressure cylinder 4 are coaxially arranged; the output end of the flywheel energy storage device 7 is connected with the input end of the rectifying device 6, and the output end of the rectifying device 6 is connected with the power grid 8.
During the normal operation of the unit, the flywheel energy storage device 7 ensures the operation at a certain rotating speed, and ensures that the frequency modulation can be responded at any time; the high-pressure regulating valve 2 ensures larger opening degree, improves the economical efficiency of daily operation of the unit, and controls the steam inlet amount of the high-pressure cylinder 1.
When the unit needs to reduce the load quickly, in order to meet a primary frequency modulation instruction, the high-pressure regulating valve 2 is closed quickly, and the amount of steam entering the high-pressure cylinder 1 is reduced, so that the output of the unit is reduced; the flywheel energy storage device 7 absorbs electric quantity from the output end of the generator 5 through the rectifying device 6 so as to improve the self rotating speed to store energy, reduce the load of on-line electricity and quickly respond to the requirement of the power grid 8.
When the unit needs to increase the load quickly, in order to meet a primary frequency modulation instruction, the high-pressure regulating valve 2 is opened quickly, and the amount of steam entering the high-pressure cylinder 1 is increased, so that the output of the unit is increased; the flywheel energy storage device 7 reduces the self rotating speed and releases electric quantity to the power grid 8 through the rectifying device 6, so that the power grid 8 load is increased, and the demand of the power grid 8 is quickly responded.
The utility model discloses utilize a small amount of throttles of high pressure accent door 2 to increase the flywheel energy memory 7 of less capacity on this basis, in order to realize complementing each other.
Claims (3)
1. A flywheel energy storage frequency modulation system capable of reducing main steam throttling is characterized by comprising a boiler, a high-pressure regulating valve (2), a high-pressure cylinder (1), an intermediate pressure cylinder (3), a low-pressure cylinder (4), a generator (5), a flywheel energy storage device (7) and a power grid (8);
the outlet of the boiler is communicated with the inlet of the high-pressure cylinder (1) through the high-pressure regulating valve (2), the outlet of the high-pressure cylinder (1) is communicated with the inlet of the intermediate pressure cylinder (3) through the reheating side of the boiler, the outlet of the intermediate pressure cylinder (3) is communicated with the inlet of the low-pressure cylinder (4), the generator (5) is connected with the high-pressure cylinder (1), the intermediate pressure cylinder (3) and the low-pressure cylinder (4), and the output end of the flywheel energy storage device (7) and the output end of the generator (5) are connected with the power grid (8) in parallel.
2. Flywheel energy storage frequency modulation system with reduced main steam throttling according to claim 1, characterized in that the generator (5), the high pressure cylinder (1), the intermediate pressure cylinder (3) and the low pressure cylinder (4) are arranged coaxially.
3. The flywheel energy storage frequency modulation system with reduced main steam throttling as claimed in claim 1, characterized in that the output of the flywheel energy storage device (7) is connected to the input of the rectifying device (6), and the output of the rectifying device (6) is connected to the grid (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377078.XU CN210629115U (en) | 2019-08-22 | 2019-08-22 | Flywheel energy storage frequency modulation system capable of reducing main steam throttling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921377078.XU CN210629115U (en) | 2019-08-22 | 2019-08-22 | Flywheel energy storage frequency modulation system capable of reducing main steam throttling |
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| CN210629115U true CN210629115U (en) | 2020-05-26 |
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| CN201921377078.XU Active CN210629115U (en) | 2019-08-22 | 2019-08-22 | Flywheel energy storage frequency modulation system capable of reducing main steam throttling |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719326A (en) * | 2021-08-26 | 2021-11-30 | 西安西热节能技术有限公司 | Flywheel energy storage system combining steam extraction regulation of power plant and power generation of small-sized steam turbine |
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2019
- 2019-08-22 CN CN201921377078.XU patent/CN210629115U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113719326A (en) * | 2021-08-26 | 2021-11-30 | 西安西热节能技术有限公司 | Flywheel energy storage system combining steam extraction regulation of power plant and power generation of small-sized steam turbine |
| CN113719326B (en) * | 2021-08-26 | 2023-08-22 | 西安西热节能技术有限公司 | Flywheel energy storage system combining steam extraction regulation of power plant with small-sized steam turbine power generation |
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