CN210370915U - System for utilize electrolysis hydrogen manufacturing and hydrogen mixed fuel to carry out thermal power plant's peak regulation - Google Patents
System for utilize electrolysis hydrogen manufacturing and hydrogen mixed fuel to carry out thermal power plant's peak regulation Download PDFInfo
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- CN210370915U CN210370915U CN201920380735.XU CN201920380735U CN210370915U CN 210370915 U CN210370915 U CN 210370915U CN 201920380735 U CN201920380735 U CN 201920380735U CN 210370915 U CN210370915 U CN 210370915U
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Abstract
The utility model relates to a system for utilizing electrolysis hydrogen production and hydrogen mixed fuel to carry out peak regulation of a thermal power plant, which comprises a thermal power generation system, a water electrolysis hydrogen production system, a gas turbine system and a control system; the thermal power generation system is connected with the water electrolysis hydrogen production system through the plant power system and is used for supplying power to the water electrolysis hydrogen production system through the plant power system so as to produce hydrogen; hydrogen prepared by the water electrolysis hydrogen production system and natural gas of the gas turbine system are pre-blended in a blending chamber to form hydrogen mixed fuel; the control system is connected with the thermal power generation system and the water electrolysis hydrogen production system and is used for acquiring an AGC load instruction of a power grid in real time and adjusting the output of the water electrolysis hydrogen production system according to the operation load of the thermal power generator set so as to enable the thermal power generator set to keep long-time stable load operation. The utility model discloses can reduce the quantity of natural gas when improving gas turbine thermal efficiency, reach the purpose of low carbon environmental protection.
Description
Technical Field
The utility model belongs to the technical field of thermal power, especially, relate to a system for utilize electrolysis hydrogen manufacturing and hydrogen mixed fuel to carry out thermal power plant's peak regulation.
Background
In recent years, under the development requirement of green and low carbon, the installed capacity of renewable energy sources (wind power, photovoltaic, nuclear power and the like) in China is obviously increased, and the renewable energy sources occupy greater and greater proportion in future power structures. Randomness and volatility of wind power generation, photovoltaic power generation and the like are high, impact of power generation on grid is high, and peak regulation and frequency modulation need to be carried out on a thermal power generating unit which runs stably. However, the frequent variable load or low load operation of the thermal power generating unit following an AGC (Automatic Generation Control) command risks coal consumption increase, pollutant emission exceeding standard and equipment life shortening.
At present, the biggest problem of the thermal power generating unit performing frequency conversion and peak regulation actions along with a power grid AGC command is that the load adjustment of the thermal power generating unit cannot catch up with the change of the AGC command, and the thermal power generating unit has the characteristics of lag in adjustment and inaccuracy. Therefore, the large energy storage system is an important means for realizing indirect peak shaving and frequency modulation of the thermal power generating unit. For example, the characteristics of quick start and high output regulation speed of the water electrolysis hydrogen production device can be utilized to carry out accurate peak regulation and frequency modulation on the thermal power generating unit. However, the method has the following technical defects: if the output configuration of the electrolytic hydrogen production device is too small, the effect of peak regulation and frequency modulation is limited; if the output configuration is large, there is a problem that the storage and utilization of the produced hydrogen gas are inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an utilize electrolysis hydrogen manufacturing and hydrogen mixed fuel to carry out system of thermal power plant's peak regulation, with the cooperation of gas turbine and water electrolysis hydrogen manufacturing system, the hydrogen of water electrolysis preparation is sent gas turbine with the natural gas mixture and is burnt, when improving the gas turbine thermal efficiency, can reduce the quantity of natural gas, reaches the purpose of low carbon environmental protection.
The utility model provides a system for regulating peak of thermal power plant by using mixed fuel of hydrogen production by electrolysis and hydrogen, which comprises a thermal power generation system, a water electrolysis hydrogen production system, a gas turbine system and a control system;
the thermal power generation system is connected with the water electrolysis hydrogen production system through the plant power system and is used for supplying power to the water electrolysis hydrogen production system through the plant power system so as to produce hydrogen;
the hydrogen prepared by the water electrolysis hydrogen production system and the natural gas of the gas turbine system are premixed in a mixing chamber to form hydrogen mixed fuel;
the control system is connected with the thermal power generation system and the water electrolysis hydrogen production system and is used for acquiring an AGC load instruction of a power grid in real time and adjusting the output of the water electrolysis hydrogen production system according to the operation load of the thermal power generator set so as to enable the thermal power generator set to keep long-time stable load operation.
Further, the water electrolysis hydrogen production system is one or a combination of alkaline water electrolysis hydrogen production equipment, proton exchange membrane electrolysis hydrogen production equipment and solid oxide electrolysis hydrogen production equipment.
And further, the output selection of the water electrolysis hydrogen production system is determined according to the output parameter of the gas turbine system and the allowable highest hydrogen mixing ratio of the gas turbine.
Further, the mixing proportion of the hydrogen in the hydrogen mixed fuel is adjustable from 0 to 100 percent.
Further, the control device comprises a data sensing module, a calculation analysis module and a control module; the data perception module is used for receiving an AGC load instruction of a power grid, load data of a thermal power generating unit and the output of the water electrolysis hydrogen production device; the calculation analysis module is used for comparing the AGC load instruction, the current load data of the thermal power generating unit and the output of the electrolyzed water hydrogen production device and calculating to obtain an output adjusting value of the electrolyzed water hydrogen production device; the control module is used for sending out a force adjusting instruction to the water electrolysis hydrogen production device.
Further, the water electrolysis hydrogen production apparatus is equipped with a power converter that accommodates wide power fluctuations.
Further, the heat generated in the operation of the water electrolysis hydrogen production device is used for heating and supplying heat for surrounding residents and related industries.
By means of the scheme, the system for regulating the peak of the thermal power plant by utilizing the electrolysis hydrogen production and hydrogen mixed fuel is matched with the gas turbine and the water electrolysis hydrogen production system, the hydrogen produced by water electrolysis and the natural gas are mixed and sent to the gas turbine for combustion, the heat efficiency of the gas turbine is improved, meanwhile, the consumption of the natural gas can be reduced, the low-carbon and environment-friendly purpose is achieved, and the system is suitable for the power plant with a thermal power generating unit and the gas turbine or a park with the thermal power generating unit and the gas turbine arranged at relatively close positions.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a block diagram of the system for peak shaving in a thermal power plant by using the hydrogen and hydrogen mixed fuel produced by electrolysis.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1, the present embodiment provides a system for performing peak shaving in a thermal power plant by using a mixed fuel of hydrogen and hydrogen produced by electrolysis, which includes a thermal power generation system 1, a hydrogen production system by water electrolysis 2, a gas turbine system 3, and a control system 4;
the thermal power generation system 1 is connected with the water electrolysis hydrogen production system 2 through a plant power system and is used for supplying power to the water electrolysis hydrogen production system 2 through the plant power system so as to produce hydrogen;
the water electrolysis hydrogen production system 2 and the natural gas of the gas turbine system 3 are pre-blended in a blending chamber to form hydrogen mixed fuel;
the control system 4 is connected with the thermal power generation system 1 and the water electrolysis hydrogen production system 2 and is used for acquiring an AGC load instruction of a power grid in real time and adjusting the output of the water electrolysis hydrogen production system according to the operation load of the thermal power generator set so as to enable the thermal power generator set to keep long-time stable load operation. If the sum of the AGC load instruction and the maximum output of the water electrolysis hydrogen production device is smaller than the current running load of the thermal power generating unit, the control system 4 can send an instruction to the thermal power generating unit to reduce the load of the thermal power generating unit to the next specified load for stable running.
Through the system for carrying out peak regulation of the thermal power plant by utilizing the electrolysis hydrogen production and hydrogen mixed fuel, the gas turbine is matched with the water electrolysis hydrogen production system, and the hydrogen produced by water electrolysis and natural gas are mixed and sent to the gas turbine for combustion, so that the heat efficiency of the gas turbine is improved, the consumption of the natural gas can be reduced, and the purposes of low carbon and environmental protection are achieved. Under the condition, the hydrogen electrolysis device with larger output can be adapted, the blending requirement of the gas turbine is met, and meanwhile, the thermal power unit can be operated at a stable load for a long time (such as full load, 75% load or 50% load for a long time), when an AGC instruction is between the loads, redundant electric quantity is used for hydrogen production by electrolysis, the coal consumption and pollutant emission can be reduced by long-time stable load operation of the thermal power unit, and meanwhile, the operation difficulty of operators can be reduced and the service life of unit equipment can be prolonged.
In addition, the combined application of the hydrogen energy storage and the hydrogen mixed fuel gas turbine can realize the on-site consumption of hydrogen, save the cost of hydrogen storage and transportation, enhance the continuity of the hydrogen energy storage and provide guarantee for long-time stable load operation and deep peak regulation of a thermal power unit.
In this embodiment, the hydrogen production system by water electrolysis 2 is alkaline water electrolysisHydrogen equipment, proton exchange membrane electrolysis hydrogen production equipment, solid oxide electrolysis hydrogen production equipment or a combination thereof. The water electrolysis hydrogen production system preferably adopts an alkaline water electrolysis hydrogen production mode, and the hydrogen yield of a single hydrogen production module is 500Nm3(H2) And h, 16 modules. The energy consumption for hydrogen production is not higher than 4.5kWh/Nm3(H2) And the maximum output is 36 MW.
In the embodiment, the output of the water electrolysis hydrogen production system 2 is selected according to the output parameter of the gas turbine system 3 and the allowable maximum hydrogen mixing ratio of the gas turbine.
In the embodiment, the blending proportion of hydrogen in the hydrogen mixed fuel is adjustable from 0 to 100%, and the blending proportion in actual operation is determined by the control system according to the AGC load instruction and the operation load of the thermal power generating unit.
In this embodiment, the control device comprises a data sensing module, a calculation and analysis module and a control module; the data perception module is used for receiving an AGC load instruction of a power grid, load data of a thermal power generating unit and the output of the water electrolysis hydrogen production device; the calculation and analysis module is used for comparing the AGC load instruction, the current load data of the thermal power generating unit and the output of the electrolyzed water hydrogen production device and calculating the output adjustment value of the electrolyzed water hydrogen production device; the control module is used for sending out a force adjusting instruction to the water electrolysis hydrogen production device. It should be noted that, the modules of the control device can be implemented by the prior art according to the above calculation logic.
In this embodiment, the water electrolysis hydrogen production apparatus is equipped with a power converter that accommodates wide power fluctuations.
In the embodiment, the heat generated in the operation of the water electrolysis hydrogen production device can be used for heating and supplying heat for surrounding residents and related industries.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A system for carrying out peak regulation on a thermal power plant by utilizing a mixed fuel of hydrogen production by electrolysis and hydrogen is characterized by comprising a thermal power generation system, a hydrogen production system by water electrolysis, a gas turbine system and a control system;
the thermal power generation system is connected with the water electrolysis hydrogen production system through a plant power system and is used for supplying power to the water electrolysis hydrogen production system through the plant power system so as to produce hydrogen;
the hydrogen prepared by the water electrolysis hydrogen production system and the natural gas of the gas turbine system are premixed in a mixing chamber to form hydrogen mixed fuel;
the control system is connected with the thermal power generation system and the water electrolysis hydrogen production system.
2. The system for peak regulation of a thermal power plant by using a mixed fuel of hydrogen produced by electrolysis and hydrogen according to claim 1, wherein the hydrogen production system by electrolysis is one or a combination of an alkaline water electrolysis hydrogen production device, a proton exchange membrane electrolysis hydrogen production device and a solid oxide electrolysis hydrogen production device.
3. The system for peak shaving in a thermal power plant using a hydrogen and hydrogen mixed fuel produced by electrolysis according to claim 2, wherein the output of the hydrogen and water electrolysis system is selected according to the output parameters of the gas turbine system and the maximum hydrogen blending ratio allowed by the gas turbine.
4. The system for peak shaving of a thermal power plant by utilizing the hydrogen and hydrogen mixed fuel produced by electrolysis according to claim 1, wherein the mixing proportion of the hydrogen in the hydrogen mixed fuel is adjustable from 0 to 100 percent.
5. The system for thermal power plant peak shaving using electrolytic hydrogen production and hydrogen co-fuel as claimed in claim 1, wherein the control system comprises a data sensing module, a computational analysis module and a control module; the data perception module is used for receiving an AGC load instruction of a power grid, load data of a thermal power generating unit and the output of the water electrolysis hydrogen production device; the calculation and analysis module is used for comparing the AGC load instruction, the current load data of the thermal power generating unit and the output of the electrolyzed water hydrogen production device and calculating the output adjustment value of the electrolyzed water hydrogen production device; the control module is used for sending out a force adjusting instruction to the water electrolysis hydrogen production device.
6. The system for thermal power plant peak shaving using hydrogen from electrolysis and hydrogen blended fuel as claimed in claim 1, wherein the system for hydrogen from water electrolysis is equipped with a power converter that accommodates wide power fluctuations.
7. The system for peak shaving in a thermal power plant using hydrogen production by electrolysis and hydrogen blended fuel as claimed in claim 1, wherein the heat generated during the operation of the system for hydrogen production by electrolysis is used for heating and heat supply of surrounding residents and related industries.
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| CN201920380735.XU CN210370915U (en) | 2019-03-25 | 2019-03-25 | System for utilize electrolysis hydrogen manufacturing and hydrogen mixed fuel to carry out thermal power plant's peak regulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962000A (en) * | 2022-06-22 | 2022-08-30 | 华电通用轻型燃机设备有限公司 | Comprehensive energy utilization system suitable for gas turbine and working method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962000A (en) * | 2022-06-22 | 2022-08-30 | 华电通用轻型燃机设备有限公司 | Comprehensive energy utilization system suitable for gas turbine and working method |
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