CN219164235U - Comprehensive frequency modulation peak shaving device for power plant - Google Patents
Comprehensive frequency modulation peak shaving device for power plant Download PDFInfo
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- CN219164235U CN219164235U CN202222493084.XU CN202222493084U CN219164235U CN 219164235 U CN219164235 U CN 219164235U CN 202222493084 U CN202222493084 U CN 202222493084U CN 219164235 U CN219164235 U CN 219164235U
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Abstract
The utility model discloses a comprehensive frequency and peak regulation device of a power plant, which comprises a peak regulation unit, a main generator unit and a frequency regulation unit which are respectively in communication connection with a frequency and peak regulation control device, wherein the main generator unit is electrically connected with a hydrogen production device, the hydrogen production device is connected with the frequency regulation unit through a pipeline, the frequency regulation unit comprises a fuel cell unit connected with the hydrogen production device through a pipeline, the fuel cell unit is electrically connected with a boosting device, a first grid-connected control device and a power grid, the peak regulation unit comprises a hydrogen fuel gas turbine generator unit connected with the hydrogen production device through a pipeline, and the hydrogen fuel gas turbine generator unit is electrically connected with a second grid-connected control device and the power grid. The utility model uses only fuel cell for frequency modulation, and has small scale and low cost; the hydrogen fuel gas turbine generator set is adopted to participate in peak regulation, and the corresponding speed is high.
Description
Technical Field
The utility model relates to the technical field of thermal power frequency modulation and peak shaving, in particular to a comprehensive frequency modulation and peak shaving device for a power plant.
Background
The electrical energy generated by a power plant is typically not stored, i.e. how much power plant the grid consumes and how much power it is generated. The actual power consumption of the power grid has the distribution of peaks and valleys, which puts a certain requirement on the regulation capability of the ignition power plant. With the access of new energy sources, such as wind power and solar power generation, to a power grid, unstable factors of the power grid are increased, and a thermal power plant generates power through a coal-fired unit, so that the corresponding speed of active power adjustment is slower, and the economy of the coal-fired unit is reduced due to frequent power adjustment, so that an energy storage technology is introduced. At present, the main energy storage technology comprises modes of pumped storage, flywheel energy storage and the like, but the pumped storage is not suitable for plain areas, and the flywheel energy storage is high in price. The energy storage adaptability of the battery is relatively better, the Chinese patent publication No. CN208835760U discloses an ammonia fuel cell power generation peak regulation and frequency modulation system, which comprises an ammonia storage and transportation device, an ammonia fuel cell power generation device, a booster station, a power grid wiring and a peak regulation and frequency modulation control device, wherein an ammonia output port of the ammonia storage and transportation device is communicated with an ammonia supply port of the ammonia fuel cell power generation device, a power supply output end of the ammonia fuel cell power generation device is electrically connected with an input end of the booster station, an output end of the booster station is connected with a power grid through the power grid wiring, and the peak regulation and frequency modulation control device is connected with the ammonia fuel cell power generation device for controlling the power generation capacity of the ammonia fuel cell power generation device. The device has no pollution and carbon emission, is clean and environment-friendly, but only carries out peak regulation and frequency modulation by one set of fuel cell system, and has large construction scale and high cost.
Disclosure of Invention
The utility model provides a comprehensive frequency modulation peak shaving device for a coal-fired power plant, which aims to make up the defects of the prior art.
The utility model is realized by the following technical scheme:
the utility model provides a comprehensive frequency modulation peak shaver of power plant, includes peak shaver unit, main generating set, the frequency modulation unit that is connected with frequency modulation peak shaver controlling means communication respectively, electric connection between main generating set and the hydrogen plant, pass through the pipeline connection between hydrogen plant and the frequency modulation unit, the frequency modulation unit includes the fuel cell unit that passes through the pipeline connection with the hydrogen plant and is connected, fuel cell unit and booster unit, first grid control device, electric wire netting electricity are connected, the peak shaver unit includes the hydrogen fuel gas turbine generating set that passes through the pipeline connection with the hydrogen plant, hydrogen fuel gas turbine generating set is connected with second grid control device, electric wire netting electricity.
The main generator set comprises a boiler, the boiler is connected with a steam turbine through a steam pipeline, the output of the turbine drives the generator set through a coupler, and the generator set is electrically connected with a power grid.
The steam turbine is also connected with the heat exchanger and the deoxidizing device in sequence through the waste heat pipeline, and the deoxidizing device is connected with the heat exchanger and the boiler in sequence through the pipeline.
The hydrogen production device comprises an electrolytic water device electrically connected with the motor, the electrolytic water device is sequentially connected with the compressor unit and the gas storage device through pipelines, and the gas storage device is respectively connected with the fuel cell unit and the hydrogen fuel gas turbine generator unit through pipelines.
The device also comprises a water treatment device which is respectively connected with the deoxidizing device and the water electrolysis device through pipelines.
The utility model has the following technical effects:
according to the utility model, redundant electric quantity is conveyed to the hydrogen production device in the thermal power generating unit, the electrolytic water is used for producing hydrogen, the produced oxygen and hydrogen are stored after being compressed, and then a part of the hydrogen is introduced into the fuel cell for discharging, so that the frequency modulation is realized in the process, the process is simpler, the energy loss is less, and the redundant hydrogen and oxygen can be sold after being split-packed; peak regulation is realized by controlling the electricity consumption of hydrogen production and the like; the utility model is also provided with the hydrogen fuel gas turbine generator set, participates in peak shaving in peak hours, has fast enough response speed of the gas turbine, and has more mature and stable technology and lower price compared with the fuel cell generator set. Only using fuel cell for frequency modulation, small construction scale and low cost; the hydrogen fuel gas turbine generator set is adopted to participate in peak shaving, so that the energy stored in the hydrogen is utilized, the consumption of natural gas is reduced, the environment is protected, and the cost is lower than that of the whole fuel cell.
Drawings
The utility model is further described below with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present utility model.
In the figure, a 1-boiler, a 2-turbine, a 3-generator, a 4-water electrolysis device, a 5-compressor unit, a 6-gas storage device, a 7-split charging device, an 8-fuel cell unit, a 9-boosting device, a 10-first grid control device, an 11-power grid, a 12-second grid control device, a 13-hydrogen fuel gas turbine generator set, a 14-frequency modulation peak regulation control device, a 15-heat exchanger, a 16-deoxidizing device and a 17-water treatment device are arranged.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the utility model, "a number" means one or more than one; the meaning of "a plurality of" is two or more, unless specifically defined otherwise.
Fig. 1 is a schematic diagram of an embodiment of the present utility model. The embodiment provides a comprehensive frequency modulation and peak shaving device of a power plant, which comprises a main generator set, a hydrogen production device, a frequency modulation unit, a peak shaving unit and a frequency modulation and peak shaving control device 14, wherein the frequency modulation and peak shaving control device 14 is in communication connection with the peak shaving unit, the main generator set and the frequency modulation unit through communication lines, the main generator set is electrically connected with the hydrogen production device, and the hydrogen production device is connected with the frequency modulation unit through a pipeline. The frequency modulation and peak shaving control device 14 sends out a command, the main generator set transmits redundant power to the hydrogen production device according to the command to produce hydrogen, the hydrogen enters the frequency modulation unit through a pipeline, the power grid is subjected to frequency modulation through discharge of the fuel cell unit 8 of the frequency modulation unit, and the frequency modulation and peak shaving control device 14 controls the quantity of the power transmitted to the hydrogen production device by the main generator set, so that a certain peak shaving effect is realized. Meanwhile, the hydrogen production device is connected with the peak shaver set through a pipeline, hydrogen enters the peak shaver set, and peak shaver is carried out on the power grid 11 through discharge of the peak shaver set.
The main generator set comprises a boiler 1 for generating steam, the boiler 1 is connected with a steam turbine 2 through a steam pipeline to provide high-pressure steam for the steam turbine 2, the output of the steam turbine 2 drives a generator set 3 through a coupling, and the generator 3 is electrically connected with a power grid 11. The steam turbine 2 is also connected with the heat exchanger 15 and the deaerating device 16 in sequence through a waste heat pipeline, and the deaerating device 16 is connected with the heat exchanger 15 and the boiler 1 in sequence through pipelines.
Also comprises a water treatment device 17, and the water treatment device 17 is connected with the deaerator 16 through a pipeline.
The hydrogen production device comprises an electrolytic water device 4 electrically connected with a generator 3, the electrolytic water device 4 is sequentially connected with a compressor unit 5 and a gas storage device 6 through pipelines, the compressor unit 5 comprises a compressor driven by a compressor turbine, and the compressor turbine is connected with a boiler through a pipeline. The gas storage device 6 is connected with a fuel cell unit 8 in the frequency modulation unit through a pipeline, and the fuel cell unit 8 is electrically connected with a boosting device 9, a first grid-connected control device 10 and a power grid 11.
The gas storage device 6 is also connected with a hydrogen fuel gas turbine generator set 13 of the peak shaver set through a pipeline, and the hydrogen fuel gas turbine generator set 13 is electrically connected with the second grid-connected control device 12 and the power grid 11. The gas storage device 6 is also connected with the split charging device 7 through a pipeline, and redundant hydrogen and oxygen are split charged and sold.
The water treatment device 17 is connected with the water electrolysis device 4 through a pipeline and provides a water source for the water electrolysis device 4.
The frequency modulation peak shaving control device 14 is electrically connected with the generator 3, the first grid connection control device 10 and the second grid connection control device 12.
The gas turbine in the hydrogen-fueled gas turbine generator 13 in this embodiment uses a natural gas and hydrogen gas mixed fuel.
In the use process, the steam generated by the boiler 1 drives the steam turbine 2, then the steam turbine 2 drives the generator 3 to generate power, the waste heat steam and condensed water of the steam turbine 2 enter the heat exchanger 15, exchange heat with the water treated by the deaerator 16, enter the deaerator 16 and the water supplemented by the water treatment device 17, are mixed, deoxidized and enter the boiler for use after passing through the heat exchanger 15. The frequency modulation peak regulation control device 14 sends out an instruction to control the amount of the electric power transmitted to the water electrolysis device 4 by the generator, and synchronously controls the amount of the steam transmitted to the compressor unit to realize peak regulation. The hydrogen and oxygen generated by the electrolysis water are respectively stored after being compressed by the compressor unit 5, then one part of the hydrogen and oxygen enter the fuel cell unit 8 to generate electricity for frequency modulation, and the other part of the hydrogen and oxygen enter the hydrogen fuel gas turbine generator unit 13 to generate electricity by mixing with natural gas according to the design proportion and participate in peak regulation. Compared with a fuel-fired battery unit, the hydrogen fuel gas turbine generator unit 13 has mature technology and low price, has high corresponding speed compared with a coal-fired unit, and can meet the peak shaving requirement of a power grid.
Claims (5)
1. The utility model provides a comprehensive frequency modulation peak shaving device of power plant which characterized in that: the hydrogen generation system comprises a peak shaving unit, a main generator unit and a frequency modulation unit which are respectively connected with a frequency modulation peak shaving control device (14) in a communication mode, wherein the main generator unit is electrically connected with the hydrogen generation device, the hydrogen generation device is connected with the frequency modulation unit through a pipeline, the frequency modulation unit comprises a fuel cell unit (8) connected with the hydrogen generation device through a pipeline, the fuel cell unit (8) is electrically connected with a boosting device (9), a first grid-connected control device (10) and a power grid (11), the peak shaving unit comprises a hydrogen fuel gas turbine generator unit (13) connected with the hydrogen generation device through a pipeline, and the hydrogen fuel gas turbine generator unit (13) is electrically connected with a second grid-connected control device (12) and the power grid (11).
2. The power plant integrated frequency and peak shaving apparatus of claim 1, wherein: the main generator set comprises a boiler (1), the boiler (1) is connected with a steam turbine (2) through a steam pipeline, the output of the steam turbine (2) drives a generator (3) through a coupler, and the generator (3) is electrically connected with a power grid (11).
3. The power plant integrated frequency and peak shaving apparatus according to claim 2, wherein: the steam turbine (2) is further connected with the heat exchanger (15) and the deaerating device (16) in sequence through waste heat pipelines, and the deaerating device (16) is connected with the heat exchanger (15) and the boiler (1) in sequence through pipelines.
4. A power plant integrated frequency and peak shaver according to claim 3, wherein: the hydrogen production device comprises an electrolytic water device (4) electrically connected with the generator (3), the electrolytic water device (4) is sequentially connected with the compressor unit (5) and the gas storage device (6) through pipelines, and the gas storage device (6) is respectively connected with the fuel cell unit (8) and the hydrogen fuel gas turbine generator unit (13) through pipelines.
5. The power plant integrated frequency and peak shaving apparatus of claim 4, wherein: the device also comprises a water treatment device (17), wherein the water treatment device (17) is respectively connected with the deaerating device (16) and the water electrolysis device (4) through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222493084.XU CN219164235U (en) | 2022-09-21 | 2022-09-21 | Comprehensive frequency modulation peak shaving device for power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222493084.XU CN219164235U (en) | 2022-09-21 | 2022-09-21 | Comprehensive frequency modulation peak shaving device for power plant |
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| CN219164235U true CN219164235U (en) | 2023-06-09 |
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| CN202222493084.XU Active CN219164235U (en) | 2022-09-21 | 2022-09-21 | Comprehensive frequency modulation peak shaving device for power plant |
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