CN114725434A - Biogas fuel cell cogeneration system based on energy internet and operation strategy - Google Patents
Biogas fuel cell cogeneration system based on energy internet and operation strategy Download PDFInfo
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- 230000005611 electricity Effects 0.000 claims abstract description 60
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 47
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- 238000012983 electrochemical energy storage Methods 0.000 claims description 9
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
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- H01—ELECTRIC ELEMENTS
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- H01M8/00—Fuel cells; Manufacture thereof
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- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
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Abstract
The invention discloses an operation strategy of a biogas fuel cell cogeneration system based on an energy internet, which comprises the following steps: monitoring real-time load information of a power grid and a heat supply network of a biogas fuel cell system based on an energy Internet, and collecting real-time environment information of a standby distributed power supply and the periphery of a user side by an environment monitoring station; predicting the yield and the load of the electric energy and the heat energy in the short-time energy source internet according to the real-time load information and the real-time environment information; judging the short-time electricity and heat supply and demand balance condition according to the prediction data to adjust an adjusting system so as to adjust the electricity and heat output; the invention solves the problem that the heat and electricity output quantity required by supply and demand balance is accurately matched in the regulation and control of heat and electricity of the biogas fuel cell cogeneration system, and realizes the good effects of dynamic tracking and timely adjustment.
Description
Technical Field
The invention relates to the research field of fuel cell systems, in particular to a biogas fuel cell cogeneration system based on energy internet and an operation strategy.
Background
Biogas is produced by anaerobic fermentation of a large amount of organic wastes in industry, agriculture or urban life, is a high-quality renewable resource, and mainly comprises carbon dioxide and methane. The reasonable utilization of the methane resource can realize good waste utilization, reduce environmental pollution and save energy.
The power generation technology of the marsh gas mainly comprises a marsh gas internal combustion engine, a gas boiler, a marsh gas fuel cell and the like. In the above technologies, a Solid Oxide Fuel Cell (SOFC) is very suitable for distributed power generation and utilization of biogas due to its advantages of wide fuel adaptability, high efficiency, cleanliness, silence, and the like.
The type and the scale of distributed power generation can be increased by adopting biogas biomass power generation and the like as a regulating power supply, and the marketization construction of the distributed power generation is promoted. The biogas fuel cell technology is taken as a distributed power generation technology and incorporated into the energy Internet, so that the utilization approach of biogas is widened, energy is saved, the environment is protected, the forms of interconnection coordination and complementary cooperation of the energy Internet can be enriched, and the method is a feasible method for solving the problem of difficult grid connection of biogas distributed power generation.
CN107146900B discloses a marsh gas fuel cell system based on energy internet. It has the following structure: the system comprises an air supply subsystem, a biogas supply subsystem and a water supply subsystem, wherein the air supply subsystem is connected with an air heat exchanger, the biogas supply subsystem is connected with a biogas heat exchanger, and the water supply subsystem is respectively connected with a water evaporator and a water heater; the air heat exchanger is sequentially connected with the biogas heat exchanger, the water evaporator and the water heater; the water heater is also respectively connected with the biogas supply subsystem and the heat supply network; the methane heat exchanger and the water evaporator are respectively connected with the reformer; the air heat exchanger and the reformer are respectively connected with the solid oxide fuel cell subsystem; the solid oxide fuel cell subsystem is connected with the combustor and then connected with the air heat exchanger, the solid oxide fuel cell subsystem is connected with one end of the electric energy output subsystem, and the other end of the electric energy output subsystem is connected with a power grid. The system can realize high-efficiency cogeneration. The invention also discloses an operation strategy of the biogas fuel cell system based on the energy Internet. The method specifically comprises the following steps: step S1, the central control system monitors the real-time load information of the power grid and the heat supply network of the biogas fuel cell system based on the energy Internet, the environment monitoring station collects the real-time environment information, and establishes a functional relation 1 between the production capacity and the consumption of the power grid and the heat supply network, whether the power grid or the heat supply network load fluctuates is judged according to the functional relation 1, the fluctuation range and the duration of the load are calculated according to the real-time environment information, if the fluctuation duration is longer than the response time of the biogas fuel cell system, the central controller sends out a biogas flow adjusting instruction, the flow of the biogas digester control valve is adjusted to increase or decrease, the electric quantity and the heat output to the power grid and the heat supply network by the biogas fuel cell system are reduced, and the load of the power grid and the heat supply network is balanced: and step S2, the central control system receives the real-time environment information to obtain a functional relation II between the real-time environment information and the production and consumption of the power grid and the heat supply network, predicts the production and consumption of the power grid and the heat supply network in the next days according to the functional relation II and the environment information in the next days, judges the relation between the prediction results, adjusts the biogas control valve to reduce the biogas flow if the production is greater than the consumption, and adjusts the biogas control valve to increase the biogas flow if the production is less than the consumption.
The prior art has the following defects:
1. in the regulation and control of heat and electric quantity, when the directions of the heat and electric quantity supply and demand adjustment are inconsistent (if a new supply and demand balance point is reached, the heat output of a system needs to be improved, and the electric quantity output is reduced), the new supply and demand balance requirement cannot be met only by changing a single control quantity, namely the flow of the biogas, and the expected target of an operation strategy cannot be reached.
2. In the regulation and control of heat and electric quantity, when the regulation directions of heat and electric quantity supply and demand are consistent, but the difference of regulation amplitudes is large, the new supply and demand balance requirement cannot be accurately matched only by changing a single control quantity, namely the flow of the biogas, and the expected target of an operation strategy cannot be achieved.
3. The strategy does not form a mechanism for continuously and dynamically tracking and adjusting the heat and electricity production of the fuel cell system.
Disclosure of Invention
The invention mainly aims to overcome the defects and shortcomings of the prior art, provides a biogas fuel cell cogeneration system based on energy internet and an operation strategy, solves the problem that the biogas fuel cell cogeneration system accurately matches the heat and electricity output required by supply and demand balance in the regulation and control of heat and electricity, and realizes the good effects of dynamic tracking and timely regulation.
A first object of the present invention is to provide an operation strategy of a biogas fuel cell cogeneration system based on the energy internet.
The invention also provides a biogas fuel cell cogeneration system based on the energy Internet.
The first purpose of the invention is realized by the following technical scheme:
the operation strategy of the biogas fuel cell cogeneration system based on the energy internet comprises the following steps:
monitoring real-time load information of a power grid and a heat supply network of a biogas fuel cell system based on an energy internet, and collecting real-time environment information of a standby distributed power supply and the periphery of a user side by an environment monitoring station;
predicting the yield and the load of electric energy and heat energy in the energy Internet in a short time according to the real-time load information and the real-time environment information;
judging the short-time electricity and heat supply and demand balance condition according to the prediction data;
and adjusting an adjusting system according to the short-time electricity and heat supply and demand balance condition so as to adjust the electricity and heat output.
Further, still include:
and after the electricity and heat output is adjusted, continuously tracking the short-time electricity and heat supply and demand balance condition, and if the unbalance condition occurs again, adjusting the adjusting system again according to the unbalance condition.
Further, the adjusting system is adjusted according to the short-time electricity and heat supply and demand balance condition, and then the electricity and heat output is adjusted, specifically:
when the electricity and heat adjusting directions are consistent, the electricity and heat output of the system is adjusted by adjusting the first methane control device;
when only one energy source of electricity and heat needs to be adjusted, adjusting a regulator corresponding to the energy source needing to be adjusted, and further adjusting the corresponding energy output;
when the electricity and heat adjusting directions are opposite, the working states of the second methane control device and the energy storage unit are respectively adjusted according to the adjusting directions, and then the electricity and heat output of the system is adjusted.
Further, when only one energy source of electricity and heat needs to be adjusted, the method specifically comprises the following steps:
when only the electric energy source needs to be adjusted, the electric output is adjusted by adjusting the working state of the energy storage unit;
when only the heat energy source needs to be adjusted, the heat output is adjusted by adjusting the second methane control device.
Further, the energy storage unit is an electrochemical energy storage unit or a flywheel energy storage unit.
Further, the first biogas control device is a biogas control valve or a biogas pressurization air pump, and the second biogas control device is a biogas control valve or a biogas pressurization air pump.
Further, the real-time load information specifically includes: the real-time electricity load and heat load of the energy internet-based biogas fuel cell system comprise information such as power, voltage and frequency of an independent power grid and load power and energy efficiency of a heat supply network.
The real-time environment information specifically comprises: the energy internet-based biogas fuel cell system relevant region meteorological change data and the output change prediction data of the distributed new energy in a short time in the future are used as the data.
Further, the predicting of the yield and the load of the electric energy and the heat energy in the energy internet in a short time specifically comprises the following steps: and forecasting the load demand change of the heat supply network and the power grid of the biogas fuel cell system based on the energy internet and the output change condition of the distributed new energy according to the real-time load information and the real-time environment information and by combining historical load data.
Further, the determining the short-time electricity and heat supply and demand balance condition according to the prediction data specifically includes:
forecasting the electric heating load and energy supply change condition of the biogas fuel cell cogeneration system based on the energy internet in a short time by combining real-time and historical electric heating load and environmental information, and comparing the balance relation between energy supply and load;
whether the heat and the electric load of the biogas fuel cell system based on the energy internet and the power supply and the heat supply reach a balance relation in a short time in the future or not is judged, and if the balance relation is not met, a feasible adjustment strategy is given;
the balance relationship is as follows:
(1) when the heat supply of the SOFC can meet the heat load requirement of the system in a short time in the future, the heat load balance condition is met; if the SOFC supplies insufficient heat or has surplus heat, the heat load balance is not satisfied.
(2) When the photovoltaic power, the wind power and the SOFC power supply can meet the power demand of the system in a short time in the future, the power load balance condition is met; otherwise the system electrical load is unbalanced.
The second purpose of the invention is realized by the following technical scheme:
biogas fuel cell cogeneration system based on energy internet for realizing biogas fuel cell cogeneration system operation strategy, which is characterized by comprising: the system comprises an air supply subsystem, a biogas supply subsystem, a water supply subsystem, an air heat exchanger, a biogas heat exchanger, a water evaporator, a water heater, a reformer, a solid oxide fuel cell subsystem, a combustor and an electric energy output subsystem; the system comprises an air supply subsystem, a water supply subsystem, a solid oxide fuel cell subsystem, a combustor, an air heat exchanger, a water heater, a water supply subsystem, a water evaporator, a water heater, a water supply subsystem, a water heater, a heat exchanger, a solid oxide fuel cell subsystem, a combustor, an electric energy output subsystem and a power grid, wherein the air supply subsystem is connected with the air heat exchanger, the methane supply subsystem is connected with the methane heat exchanger, the water supply subsystem is respectively connected with the water evaporator and the water heater, the air heat exchanger and the reformer are respectively connected with the solid oxide fuel cell subsystem, the solid oxide fuel cell subsystem is connected with the combustor and then connected with the air heat exchanger, the solid oxide fuel cell subsystem is connected with one end of the electric energy output subsystem, and the other end of the electric energy output subsystem is connected with the power grid; the biogas supply subsystem is provided with a first biogas control device and a second biogas control device, the first biogas control device is connected between the biogas digester and the desulfurizer, and the second biogas control device is connected between the biogas digester and the burner; the solid oxide fuel cell subsystem is provided with a storage unit, and the storage unit is connected between an inversion unit of the solid oxide fuel cell subsystem and a power grid.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention solves the problem that the heat and electricity output quantity required by supply and demand balance is accurately matched in the regulation and control of heat and electricity of the biogas fuel cell cogeneration system, and realizes the good effects of dynamic tracking and timely adjustment.
Drawings
FIG. 1 is a flow chart of the operation strategy of the energy Internet-based biogas fuel cell cogeneration system of the invention;
FIG. 2 is a view showing the operation strategy in the embodiment 1 of the present invention;
fig. 3 is a structural diagram of a biogas fuel cell cogeneration system of the energy internet according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Example 1:
the operation strategy of the biogas fuel cell cogeneration system based on the energy internet, as shown in fig. 1, comprises the following steps:
monitoring real-time load information of a power grid and a heat supply network of a biogas fuel cell system based on an energy internet, and collecting real-time environment information of a standby distributed power supply and the periphery of a user side by an environment monitoring station;
predicting the yield and load of electric energy and heat energy in the energy Internet in a short time according to the real-time load information and the real-time environment information;
judging the short-time electricity and heat supply and demand balance condition according to the prediction data;
and adjusting the adjusting system according to the short-time electricity and heat supply and demand balance condition so as to adjust the electricity and heat output.
And after the electricity and heat output quantities are adjusted, continuously tracking the short-time electricity and heat supply and demand balance condition, and if the unbalance condition occurs again, adjusting the adjusting system again according to the unbalance condition.
According to the short-time electricity and heat supply and demand balance condition, the adjusting system is adjusted, and then the electricity and heat output is adjusted, specifically:
when the electricity and heat adjusting directions are consistent, the electricity and heat output of the system is adjusted by adjusting the first methane control device;
when only one energy source of electricity and heat needs to be adjusted, adjusting a regulator corresponding to the energy source needing to be adjusted, and further adjusting the corresponding energy output; the method specifically comprises the following steps:
when only the electric energy source needs to be adjusted, the electric output is adjusted by adjusting the working state of the energy storage unit;
when only the heat energy source needs to be adjusted, the heat output is adjusted by adjusting the second methane control device.
When the electricity and heat adjusting directions are opposite, the working states of the second methane control device and the energy storage unit are respectively adjusted according to the adjusting directions, and then the electricity and heat output of the system is adjusted.
Further, the energy storage unit is an electrochemical energy storage unit or a flywheel energy storage unit.
Further, the first biogas control device is a biogas control valve or a biogas pressurization air pump, and the second biogas control device is a biogas control valve or a biogas pressurization air pump.
Further, the real-time load information specifically includes: the real-time electricity load and heat load of the energy internet-based biogas fuel cell system comprise information such as power, voltage and frequency of an independent power grid and load power and energy efficiency of a heat supply network.
The real-time environment information specifically comprises: the energy internet-based biogas fuel cell system relevant region meteorological change data and the output change prediction data of the distributed new energy in a short time in the future are used as the data.
Further, the method for measuring the yield and the load of the electric energy and the heat energy in the energy internet in a short time specifically comprises the following steps: and forecasting the load demand change of the heat supply network and the power grid of the biogas fuel cell system based on the energy internet and the output change condition of the distributed new energy according to the real-time load information and the real-time environment information and by combining historical load data.
Further, the short-time electricity and heat supply and demand balance condition is judged according to the prediction data, and the method specifically comprises the following steps:
forecasting the electric heating load and the energy supply change condition of the biogas fuel cell cogeneration system based on the energy Internet in a short time by combining real-time and historical electric heating load and environmental information, and comparing the balance relation between energy supply and load;
whether the heat and the electric load of the biogas fuel cell system based on the energy internet and the power supply and the heat supply reach a balance relation in a short time in the future or not is judged, and if the balance relation is not met, a feasible adjustment strategy is given;
the balance relationship is as follows:
(1) when the heat supply of the SOFC can meet the heat load requirement of the system in a short time in the future, the heat load balance condition is met; if the SOFC supplies insufficient heat or has surplus heat, the heat load balance is not satisfied.
(2) When the photovoltaic power, the wind power and the SOFC power supply can meet the power demand of the system in a short time in the future, the power load balance condition is met; otherwise the system electrical load is unbalanced.
The method comprises the following specific steps:
the operating strategy is shown in figure 2. Monitoring real-time load information of a power grid and a heat supply network of a biogas fuel cell system based on an energy internet to obtain a functional relation I of the output and the load of electric energy and heat energy in the energy internet along with time, and simultaneously collecting real-time environment information of a standby distributed power supply and the periphery of a user side by an environment monitoring station; after establishing a function I, judging whether the short-time electricity and heat supply and demand are balanced, (1) when the adjusting directions of the heat and electricity are consistent, adjusting the heat and electricity output of the system by adjusting the opening of a biogas control valve A2-2; (2) when only one energy source of heat (or electricity) needs to be adjusted, only the opening degree of the biogas control valve B2-5 (or the working state of the electrochemical energy storage unit 6-3) is adjusted to adjust the heat (electricity) output; (3) when the hot and electric adjustment directions are opposite, respectively adjusting the opening degree of the biogas control valve B2-5 and the working state of the electrochemical energy storage unit 6-3 according to the adjustment directions, and further adjusting the heat and electric output of the system; (4) and continuously tracking the short-time heat and electricity supply and demand balance condition after the adjustment is finished, and if the unbalance condition occurs again, selecting a corresponding system heat and electricity output quantity adjustment method again according to the strategy, and continuously circulating to achieve the effects of dynamic tracking and timely adjustment.
Among the above strategies, the strategy (3) can effectively solve the most important and critical problems of the second background art; strategy (4) may solve problem 3; for problem 2, the problem of thermoelectric regulation spread can be solved by a combination of strategies (1) - (4) - (2). In conclusion, the problems in the background art can be effectively solved through the optimized system structure and the optimized operation strategy, and the expected target is achieved.
Example 2:
as shown in fig. 3, the biogas fuel cell cogeneration system based on the energy internet is used for implementing an operation strategy of the biogas fuel cell cogeneration system, and is characterized by comprising: the system comprises an air supply subsystem, a biogas supply subsystem, a water supply subsystem, an air heat exchanger, a biogas heat exchanger, a water evaporator, a water heater, a reformer, a solid oxide fuel cell subsystem, a combustor and an electric energy output subsystem; the system comprises an air supply subsystem, a water supply subsystem, a solid oxide fuel cell subsystem, a combustor, an air heat exchanger, a water heater, a water supply subsystem, a water evaporator, a water heater, a water supply subsystem, a water heater, a heat exchanger, a solid oxide fuel cell subsystem, a combustor, an electric energy output subsystem and a power grid, wherein the air supply subsystem is connected with the air heat exchanger, the methane supply subsystem is connected with the methane heat exchanger, the water supply subsystem is respectively connected with the water evaporator and the water heater, the air heat exchanger and the reformer are respectively connected with the solid oxide fuel cell subsystem, the solid oxide fuel cell subsystem is connected with the combustor and then connected with the air heat exchanger, the solid oxide fuel cell subsystem is connected with one end of the electric energy output subsystem, and the other end of the electric energy output subsystem is connected with the power grid; the biogas supply subsystem is provided with a first biogas control device and a second biogas control device, the first biogas control device is connected between the biogas digester and the desulfurizer, and the second biogas control device is connected between the biogas digester and the burner; the solid oxide fuel cell subsystem is provided with a storage unit, and the storage unit is connected between an inversion unit of the solid oxide fuel cell subsystem and a power grid.
The method comprises the following specific steps:
a biogas control valve B2-5 and an electrochemical energy storage unit (6-3) are added on the basis of the existing biogas fuel cell system based on the energy Internet. The biogas control valve 2-5 is connected with the biogas digester 2-1 and the burner 5-1, the output flow of the biogas is controlled by the biogas control valve B2-5 and enters the burner 5-1 for burning, and the heat output of the system can be adjusted; the electrochemical energy storage unit 6-3 is connected with the inverter unit 6-2 and the power grid 6-4, and the electricity output of the system is adjusted by adjusting the working modes (static state, energy storage and energy release) of the electrochemical energy storage unit 6-3. The heat quantity produced by the system after the two elements are added is jointly regulated by a methane control valve A2-2 and a methane control valve B2-5, and the electric quantity produced by the system is jointly regulated by a methane control valve A2-2 and an electrochemical energy storage unit 6-3.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The operation strategy of the biogas fuel cell cogeneration system based on the energy internet is characterized by comprising the following steps:
monitoring real-time load information of a power grid and a heat supply network of a biogas fuel cell system based on an energy internet, and collecting real-time environment information of a standby distributed power supply and the periphery of a user side by an environment monitoring station;
predicting the yield and the load of electric energy and heat energy in the energy Internet in a short time according to the real-time load information and the real-time environment information;
judging the short-time electricity and heat supply and demand balance condition according to the prediction data;
and adjusting the adjusting system according to the short-time electricity and heat supply and demand balance condition so as to adjust the electricity and heat output.
2. The operating strategy for an energy internet based biogas fuel cell combined heat and power system according to claim 1, further comprising:
and after the electricity and heat output is adjusted, continuously tracking the short-time electricity and heat supply and demand balance condition, and if the unbalance condition occurs again, adjusting the adjusting system again according to the unbalance condition.
3. The operation strategy of the energy internet-based biogas fuel cell cogeneration system according to claim 1, wherein the adjustment system is adjusted according to the short-time electricity and heat supply and demand balance condition, and further the electricity and heat output is adjusted, specifically:
when the electricity and heat adjusting directions are consistent, the electricity and heat output of the system is adjusted by adjusting the first methane control device;
when only one energy source of electricity and heat needs to be adjusted, adjusting a regulator corresponding to the energy source needing to be adjusted, and further adjusting the corresponding energy output;
when the electricity and heat adjusting directions are opposite, the working states of the second methane control device and the energy storage unit are respectively adjusted according to the adjusting directions, and then the electricity and heat output of the system is adjusted.
4. The operation strategy of the energy internet-based biogas fuel cell cogeneration system according to claim 3, wherein when only one of electricity and heat needs to be adjusted, the operation strategy comprises:
when only the electric energy source needs to be adjusted, the electric output is adjusted by adjusting the working state of the energy storage unit;
when only the heat energy source needs to be adjusted, the heat output is adjusted by adjusting the second methane control device.
5. The operating strategy of an energy internet based biogas fuel cell combined heat and power generation system according to claim 3, characterized in that the energy storage unit is an electrochemical energy storage unit or a flywheel energy storage unit.
6. The operating strategy of the energy internet-based biogas fuel cell cogeneration system of claim 3, wherein the first biogas control device is a biogas control valve or a biogas pressurization air pump, and the second biogas control device is a biogas control valve or a biogas pressurization air pump.
7. The operation strategy of the energy internet-based biogas fuel cell cogeneration system according to claim 1, wherein the real-time load information specifically comprises real-time power load and heat load, and specifically comprises: the power of the independent power grid, the voltage of the independent power grid, the frequency of the independent power grid, the load power of the heat supply network and the energy efficiency of the heat supply network;
the real-time environment information specifically comprises: and weather change data of the relevant areas and output change prediction data of the distributed new energy in a short time in the future are taken as the basis.
8. The operation strategy of the energy internet-based biogas fuel cell cogeneration system according to claim 1, wherein the prediction of the yield and load of electric energy and heat energy in the energy internet in a short time is specifically: and predicting the load demand change of the heat supply network and the power grid of the biogas fuel cell system based on the energy internet and the output change condition of the distributed new energy according to the real-time load information and the real-time environment information and by combining historical load data.
9. The operation strategy of the energy internet-based biogas fuel cell cogeneration system according to claim 1, wherein the judgment of the short-time electricity and heat supply and demand balance condition according to the prediction data is specifically as follows:
forecasting the electric heating load and energy supply change condition of the biogas fuel cell cogeneration system based on the energy internet in a short time by combining real-time and historical electric heating load and environmental information, and comparing the balance relation between energy supply and load;
whether the heat, the electric load, the power supply and the heat supply of the biogas fuel cell system based on the energy Internet reach a balance relation in a future short time or not is judged, and if the balance relation is not met, a feasible adjustment strategy is given;
the balance relationship is as follows:
(1) when the heat supply of the SOFC can meet the heat load requirement of the system in a short time in the future, the heat load balance condition is met; if the SOFC supplies insufficient heat or has surplus heat, the heat load balance is not met;
(2) when the photovoltaic power, the wind power and the SOFC power supply can meet the power demand of the system in a short time in the future, the power load balance condition is met; otherwise the system electrical load is unbalanced.
10. Biogas fuel cell cogeneration system based on the energy internet, for implementing the biogas fuel cell cogeneration system operating strategy of any one of claims 1-9, characterized by comprising: the system comprises an air supply subsystem, a biogas supply subsystem, a water supply subsystem, an air heat exchanger, a biogas heat exchanger, a water evaporator, a water heater, a reformer, a solid oxide fuel cell subsystem, a combustor and an electric energy output subsystem; the system comprises an air supply subsystem, a water supply subsystem, a solid oxide fuel cell subsystem, a combustor, an air heat exchanger, a water heater, a water supply subsystem, a water evaporator, a water heater, a water supply subsystem, a water heater, a heat exchanger, a solid oxide fuel cell subsystem, a combustor, an electric energy output subsystem and a power grid, wherein the air supply subsystem is connected with the air heat exchanger, the methane supply subsystem is connected with the methane heat exchanger, the water supply subsystem is respectively connected with the water evaporator and the water heater, the air heat exchanger and the reformer are respectively connected with the solid oxide fuel cell subsystem, the solid oxide fuel cell subsystem is connected with the combustor and then connected with the air heat exchanger, the solid oxide fuel cell subsystem is connected with one end of the electric energy output subsystem, and the other end of the electric energy output subsystem is connected with the power grid; the biogas supply subsystem is provided with a first biogas control device and a second biogas control device, the first biogas control device is connected between the biogas digester and the desulfurizer, and the second biogas control device is connected between the biogas digester and the burner; the solid oxide fuel cell subsystem is provided with a storage unit, and the storage unit is connected between an inversion unit of the solid oxide fuel cell subsystem and a power grid.
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| KR20090076085A (en) * | 2008-01-07 | 2009-07-13 | 엘지전자 주식회사 | Co-generation |
| CN107146900A (en) * | 2017-05-26 | 2017-09-08 | 清华四川能源互联网研究院 | A kind of biogas fuel cell system and its operation reserve based on energy internet |
| CN209147061U (en) * | 2018-10-17 | 2019-07-23 | 中国科学院广州能源研究所 | A kind of accumulation of heat regulation distributed combined heat and power generation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090076085A (en) * | 2008-01-07 | 2009-07-13 | 엘지전자 주식회사 | Co-generation |
| CN107146900A (en) * | 2017-05-26 | 2017-09-08 | 清华四川能源互联网研究院 | A kind of biogas fuel cell system and its operation reserve based on energy internet |
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