CN114759610A - Wind and light combustion and storage integrated energy system based on wind and light virtual synchronous machine - Google Patents
Wind and light combustion and storage integrated energy system based on wind and light virtual synchronous machine Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/40—Synchronising a generator for connection to a network or to another generator
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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Abstract
The invention discloses a wind-solar-combustion-storage integrated energy system based on a wind-solar virtual synchronous machine, which relates to the technical field of integrated energy system design and solves the problems that the electricity, cold and heat supply and demand balance and the flexible power regulation in a park are difficult to realize.
Description
Technical Field
The invention relates to the technical field of design of integrated energy systems, in particular to a wind-solar combustion-storage integrated energy system based on a wind-solar virtual synchronous machine.
Background
The industrial park has the characteristics of developed industrial users and complex load demand, but the problems of unreasonable energy structure, low energy utilization rate, large load peak-valley difference, environmental pollution and the like generally exist. The industrial park internally comprises loads of different forms of cold, heat and electricity, so that various energy sources such as wind, light, fuel, storage and the like need to be comprehensively considered during energy source configuration, and the optimal combination of the energy sources is realized. Through carrying out reasonable capacity configuration to wind, light, fire, energy storage source, not only can satisfy the garden load demand, can also reduce system cost, guarantee that the garden reliably, operates economically. The multi-energy complementation can reduce the consumption of primary energy, improve the energy utilization rate, actively respond to the national energy-saving and emission-reduction policy, reduce the environmental pollution and has important significance for promoting the development of energy Internet.
The application number is 202010381872.2 Chinese patent discloses an urban energy Internet system, which comprises an energy Internet physical network layer, an energy information fusion supporting layer and an energy operation management service layer, wherein the energy information fusion supporting layer comprises an intelligent meter and a physical information system which are sequentially connected, the energy operation management service layer comprises an energy service provider, an energy service platform and an energy user, the energy service provider performs bidirectional interaction with the energy user through the energy service platform, and the energy service provider and the energy are both in communication connection with the energy information fusion supporting layer; the energy interconnection physical network layer comprises an energy conversion system, and the energy conversion system comprises a gas network, a power network and a heat network which are connected in pairs. Compared with the prior art, the invention realizes deep fusion and optimized sharing of energy information on the basis of fusion of various energy systems, provides a common energy exchange and sharing platform for energy suppliers and consumers, and cannot deeply realize deep fusion of various renewable energy technologies and energy Internet technologies.
The chinese patent with application number 202010441142.7 discloses a data center-oriented renewable energy power generation and waste heat recycling comprehensive energy system, which comprises an external power grid, a geothermal power generation system, a data center, and CO 2The system comprises an air conditioning system, a three-way valve, a cooling tower, an energy utilization building, a microgrid system and a controller. The invention applies renewable energy (geothermal energy) power generation to the data center, on one hand, the problems of environmental pollution, fossil energy consumption and the like caused by thermal power generation are reduced, and on the other hand, the reliability and the stability of a renewable energy power generation system are improved. Furthermore, by CO2The air conditioning system recovers waste heat generated by the data center and further heats energy-using buildings so as to improve the overall energy utilization efficiency of the data center, but the air conditioning system fails to realize deep interconnection of a user layer, a scheduling control layer and an energy supply layer in the aspects of energy production, manufacturing, storage, transportation and the like.
The application number 201910070197.9 discloses an energy internet system based on natural gas, hydrogen and electric power and a working method thereof, wherein the energy internet system comprises a hydrogen system, a natural gas system, a renewable energy power generation system and a waste heat utilization system, the renewable energy power generation system is connected with the hydrogen system, the hydrogen system is respectively connected with the natural gas system and the waste heat utilization system, and the natural gas system is connected with the waste heat utilization system; the hydrogen system, the gas system and the renewable energy power generation system are also connected with a power grid system, and the gas system is also connected with a gas pipeline; the hydrogen system is also connected with the fuel cell on-site user and the hydrogen user end, and the waste heat utilization system is also connected with the hot user end and the cold/hot user end. The invention preferentially utilizes renewable energy sources to electrolyze water to produce hydrogen, organically combines a hydrogen energy source utilization system with a fuel gas distributed type and a power grid, overcomes the defects of the existing energy source network, not only can solve the situation of natural gas shortage, but also has the function of power grid peak regulation, has great energy-saving and environmental-protection benefits, but cannot solve the problem of insufficient power generation consumption of the renewable energy sources caused by self intermittency and instability of the renewable energy sources in a comprehensive energy source system.
The technical scheme disclosed by the invention can not realize the maximum utilization of renewable energy sources in the park, the balance of electricity, cold and heat supply and demand in the park and the flexible regulation of electric power, and can not realize the comprehensive utilization of distributed clean energy sources and the interconnection of the production, manufacture, storage, transportation and the like of the energy sources, so that the emission of harmful gases such as carbon monoxide, carbon dioxide, sulfide, nitride and the like is difficult to play an effective inhibiting role.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The invention aims to provide a wind and light fuel and storage integrated energy system based on a wind and light virtual synchronous machine, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a wind-solar-combustion-storage integrated energy system based on a wind-solar virtual synchronous machine comprises an energy supply system, a scheduling control system and energy users, wherein the energy supply system comprises a wind-solar-generation virtual synchronous machine subsystem, an electric storage device, a cold storage/heat storage subsystem and a natural gas distributed energy supply subsystem, the scheduling control system comprises an integrated energy system control center, an information database, an electric power network, a heat supply/cold supply network and an information network, the energy supply system is connected with the scheduling control system through the electric power network, the heat supply/cold supply network and the information network, the energy users are connected with the scheduling control system through the electric power network, the heat supply/cold supply network and the information network, the wind-solar-generation virtual synchronous machine subsystem is connected with the electric power network and the electric storage device, the natural gas distributed energy supply subsystem is connected with the electric power network and the heat supply/cold supply network, the cold/heat accumulation subsystem is interconnected with a heat supply/cold supply network to realize bidirectional flow of heat energy and cold energy, the electric storage device is interconnected with an electric power network to realize multidirectional electric power transmission, the electric power network and the heat supply/cold supply network are connected with energy users, the information network is interconnected with the energy users, the comprehensive energy system control center is interconnected with the information network, the comprehensive energy system control center is interconnected with an information database, the information database is interconnected with the information network, and the heat supply/cold supply network and the electric power network are interconnected with the information network.
Further, the natural gas distributed energy supply subsystem comprises a gas turbine power generation device, a waste heat boiler, a afterburning boiler, a steam type refrigerator and an electric refrigerator, the input end of the gas turbine power generation device is connected with a natural gas pipeline, the output end of the gas turbine power generation device is connected with a waste heat boiler through a flue gas pipeline, the waste heat boiler is connected with the steam type refrigerator through a steam pipeline, the waste heat boiler and the afterburning boiler are both connected with a water supply system, the after-combustion boiler is connected with a natural gas pipeline, the output ends of the waste heat boiler and the after-combustion boiler are both connected with the input end of the steam type refrigerator through a steam pipeline, the electric refrigerator is connected with a power network, and the gas turbine power generation device, the waste heat boiler, the afterburning boiler, the steam type refrigerator and the electric refrigerator are all connected with a heat supply/cold supply network.
Furthermore, the wind-solar power generation virtual synchronous machine subsystem comprises a wind power generation device, a photovoltaic power generation device and a virtual synchronous machine, wherein the wind power generation device and the photovoltaic power generation device are connected with the virtual synchronous machine through a direct current bus.
Furthermore, the wind power generation device comprises a wind power generation unit and a rectifier AC/DC, wherein the output end of the wind power generation unit is connected with the input end of the rectifier AC/DC, and the output end of the rectifier AC/DC is connected with the direct current bus.
Furthermore, the photovoltaic power generation device comprises a solar photovoltaic panel and a first direct current chopper DC/DC, the output end of the photovoltaic power generation device is connected with the input end of the first direct current chopper DC/DC, and the output end of the direct current chopper DC/DC is connected with a direct current bus.
Further, the virtual synchronous machine comprises a power electronic converter, a second direct current chopper DC/DC and a wind-light virtual synchronous control system, the power electronic converter is connected with the direct current bus, the second direct current chopper DC/DC is interconnected with the direct current bus, the electric storage device is interconnected with the second direct current chopper DC/DC, the power electronic converter is connected with a power network and the wind-light virtual synchronous control system, and the wind-light virtual synchronous control system is connected with the power electronic converter.
Further, the electrical storage device is a battery, which is interconnected with the second direct current chopper DC/DC.
Compared with the prior art, the invention has the following beneficial effects:
1. the wind-solar-fuel-storage integrated energy system based on the wind-solar virtual synchronous machine can meet various energy requirements of users, realize multi-energy coupling operation, greatly improve the energy utilization rate and economy, realize production-purchase-sale integrated information service based on the energy information physical fusion platform, provide energy source interconnection operation channel facilities for enterprises, electricity-selling companies, users, distributed resource owners and other various main bodies, smoothen fund circulation in the energy field range, improve the energy structure in the region and lay an important energy foundation for future economic development of the region;
2. The wind-solar power generation virtual synchronous machine is based on the wind-solar power generation virtual synchronous machine technology, the renewable energy in the region is utilized to the greatest extent, so that the wind-solar power generation virtual synchronous machine plays a good role in inhibiting the emission of harmful gases such as carbon monoxide, carbon dioxide, sulfide and nitride, and meanwhile, the voltage level is relatively low during power generation due to the mode of taking energy nearby and supplying power, so that the electromagnetic pollution caused by the wind-solar power generation virtual synchronous machine is far smaller than that caused by the traditional centralized power generation mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a structural block diagram of a wind-solar-fuel-storage integrated energy system based on a wind-solar virtual synchronous machine according to an embodiment of the invention;
FIG. 2 is a structural block diagram of a natural gas distributed energy supply subsystem in a wind-light-fuel-storage integrated energy system based on a wind-light virtual synchronous machine according to an embodiment of the invention;
FIG. 3 is a structural block diagram of a wind-solar energy-burning and energy-storing integrated energy system wind-solar energy generation virtual synchronous machine subsystem based on a wind-solar energy virtual synchronous machine according to an embodiment of the invention;
FIG. 4 is a graph of a typical daily cold, hot, electrical load distribution for a case;
FIG. 5 is a graph of a typical daily solar resource distribution in a case;
FIG. 6 is a graph of a typical daily wind speed profile for a case;
FIG. 7 is a three-phase voltage waveform of the virtual synchronous machine in the case;
fig. 8 is a frequency waveform diagram of the virtual synchronous machine in the case.
Reference numerals:
1. an energy supply system; 2. a scheduling control system; 3. a user of an energy source; 4. a wind-solar power generation virtual synchronous machine subsystem; 5. an electrical storage device; 6. a cold/heat storage subsystem; 7. a natural gas distributed energy supply subsystem; 8. a comprehensive energy system control center; 9. an information database; 10. an electrical power network; 11. a heating/cooling network; 12. an information network; 13. a gas turbine power plant; 14. a waste heat boiler; 15. a post-combustion boiler; 16. a steam type refrigerator; 17. an electric refrigerator; 18. a water supply system; 19. a wind power generation device; 20. a photovoltaic power generation device; 21. a virtual synchronous machine; 22. a direct current bus; 23. a wind generating set; 24. a rectifier AC/DC; 25. a solar photovoltaic panel; 26. a first direct current chopper DC/DC; 27. a power electronic converter; 28. the second direct current chopper DC/DC; 29. and (3) a wind-solar virtual synchronous control system.
Detailed Description
The invention is further described with reference to the following drawings and detailed description:
the embodiment is as follows:
referring to fig. 1-3, a wind-solar-energy-fuel-storage integrated energy system based on a wind-solar virtual synchronous machine according to an embodiment of the present invention includes an energy supply system 1, a scheduling control system 2 and energy users 3, where the energy supply system 1 includes a wind-solar power generation virtual synchronous machine subsystem 4, an electrical storage device 5, a cold/heat storage subsystem 6 and a natural gas distributed energy supply subsystem 7, the scheduling control system 2 includes an integrated energy system control center 8, an information database 9, an electrical power network 10, a heat/cold supply network 11 and an information network 12, the energy supply system 1 and the scheduling control system 2 are connected through the electrical power network 10, the heat/cold supply network 11 and the information network 12, the energy users 3 and the scheduling control system 2 are connected through the electrical power network 10, the heat/cold supply network 11 and the information network 12, the wind-solar-energy-fuel-storage integrated energy system 4 is connected with the electrical power network 10 and the wind-solar power storage device 5, renewable energy power is supplied to a comprehensive energy microgrid consisting of a power network 10, a heat supply/cold supply network 11 and an information network 12 after being processed by a virtual synchronizer 21, the natural gas distributed energy supply subsystem 7 is connected with the power network 10 and the heat supply/cold supply network 11, the natural gas distributed energy supply subsystem 7 supplies power, heat energy and cold energy to be scheduled by a scheduling control system 2, the cold storage/heat storage subsystem 6 is interconnected with the heat supply/cold supply network 11 to realize bidirectional flow of heat energy and cold energy, the electric storage device 5 is interconnected with the power network 10 to realize multidirectional power transmission, the power network 10 and the heat supply/cold supply network 11 are both connected with energy users 3, the information network 12 is interconnected with the energy users 3, the comprehensive energy system control center 8 is interconnected with the information network 12, the comprehensive energy system control center 8 is interconnected with an information database 9, the information database 9 is interconnected with an information network 12, the heat supply/cold supply network 11 and the power network 10 are interconnected with the information network 12 to realize the collaborative optimal scheduling of various energy sources in a region, wherein the energy source users 3 comprise residential users, office users and the like, the energy supply system 1 aims at providing electricity/heat/cold energy for the energy source users 3 and the comprehensive energy system, and the scheduling control system 2 realizes the interaction and scheduling of information flow, electricity/heat/cold flow by combining an optimal scheduling algorithm through the comprehensive energy system control center 8 and the information database 9, thereby meeting various energy source requirements of users, realizing the multi-energy coupling operation, greatly improving the energy utilization rate and the economy, and in addition, based on an energy source information physical fusion platform, realizing the production-purchase-sale integrated information service, the energy resource interconnection system provides facilities participating in energy interconnection operation channels for various main bodies such as enterprises, electricity selling companies, users, distributed resource owners and the like, enables fund circulation in the range of the energy field to be smooth, can improve the energy structure in the region, and lays an important energy foundation for future economic development of the region.
In further embodiment, natural gas distributed energy supply subsystem 7 includes gas turbine power generation facility 13, exhaust-heat boiler 14, afterburning boiler 15, steam type refrigerator 16 and electric refrigerator 17, and natural gas distributed energy supply subsystem 7 aims at providing energy user 3 and comprehensive energy system self power consumption/heat/cold energy, gas turbine power generation facility 13's input is connected with the natural gas pipeline, gas turbine power generation facility 13's output passes through the flue gas pipeline and links to each other with exhaust-heat boiler 14, link to each other through the steam pipeline between exhaust-heat boiler 14 and the steam type refrigerator 16, exhaust-heat boiler 14 with afterburning boiler 15 all links to each other with water supply system 18, afterburning boiler 15 links to each other with the natural gas pipeline, exhaust-heat boiler 14 with afterburning boiler 15's output all links to each other through the input of steam pipeline with steam type refrigerator 16, the electric refrigerator 17 is connected with the power network 10, the gas turbine power generation device 13, the waste heat boiler 14, the afterburning boiler 15, the steam type refrigerator 16 and the electric refrigerator 17 are all connected with the heat supply/cooling network 11, wherein the gas turbine power generation device 13 provides electric energy for the power network 10, the waste heat boiler 14 and the afterburning boiler 15 provide heat energy for the heat supply/cooling network 11, and the steam type refrigerator 16 and the electric refrigerator 17 provide cold energy for the heat supply/cooling network 11.
In a further embodiment, the wind power generation and photovoltaic power generation virtual synchronous machine subsystem 4 comprises a wind power generation device 19, a photovoltaic power generation device 20 and a virtual synchronous machine 21, wherein the wind power generation device 19 and the photovoltaic power generation device 20 are both connected with the virtual synchronous machine 21 through a direct current bus 22, and the virtual synchronous machine 21 can realize the adjustment of the voltage and the frequency of the microgrid through an active power-frequency control loop and a reactive power-voltage control loop.
In a further embodiment, the wind power plant 19 comprises a wind power plant 23 and a rectifier AC/DC24, the output of the wind power plant 23 is connected to the input of a rectifier AC/DC24, and the output of the rectifier AC/DC24 is connected to the DC bus 22.
In a further embodiment, the photovoltaic power generation device 20 comprises a solar photovoltaic panel 25 and a first DC chopper DC/DC26, the output terminal of the photovoltaic power generation device 20 is connected to the input terminal of a first DC chopper DC/DC26, and the output terminal of the DC chopper DC/DC is connected to the DC bus 22.
In a further embodiment, the virtual synchronous machine 21 comprises a power electronic converter 27, a second direct current chopper DC/DC28 and a wind-solar virtual synchronous control system 29, the power electronic converter 27 is connected with the direct current bus 22, the second direct current chopper DC/DC28 is interconnected with the direct current bus 22, the power storage device 5 is interconnected with the second direct current chopper DC/DC28, the power electronic converter 27 is connected with the power network 10 and the wind-solar virtual synchronous control system 29, and the wind-solar virtual synchronous control system 29 is connected with the power electronic converter 27, wherein the power storage device 5 provides power support for a frequency modulation link of the virtual synchronous machine 21.
In a further embodiment, the storage device 5 is a battery interconnected with a second direct current chopper DC/DC 28.
The wind-solar power generation virtual synchronous machine technology is based on the wind-solar power generation virtual synchronous machine technology, renewable energy sources in the region are utilized to the greatest extent, so that the wind-solar power generation virtual synchronous machine has a good effect of inhibiting the emission of harmful gases such as carbon monoxide, carbon dioxide, sulfides, nitrides and the like, and meanwhile, the voltage level is relatively low during power generation due to the mode of nearby energy taking and power supply, so that the electromagnetic pollution caused by the wind-solar power generation virtual synchronous machine technology is far smaller than that of the traditional centralized power generation mode
For the convenience of understanding the technical scheme of the invention, the following description will be made in detail about the case of the invention in the practical application process.
It is known that a typical distribution of the daily cold, hot and electric loads is shown in fig. 4, and it can be known from fig. 4 that the electricity utilization peak period is from 8 am to 11 night, and the electric loads are maintained at 4000 and 5000kW during the time interval. The electricity utilization valley is set from 23 nights to 8 am of the next day, the electricity load is kept at about 2500kW in the time interval and is about 50% of the peak value of the electricity utilization, and the cold consumption peak period is about 9 am to 19 pm, and the cold load is kept between 10000kW and 11500kW in the peak period; the cold load at night is relatively low, the minimum is about 3000kW, the hot water load is mainly used for domestic water such as bathing and washing, the consumption of the hot water load is greatly related to the working and rest time of residents, the heat load demand is extremely low in the period from 24 am to 6 am, and the peak time of heat consumption appears in two time periods from 7 am to 10 am and from 18 pm to 23 pm.
The typical solar resource distribution is shown in FIG. 5, where the terrestrial solar energy exists from 6 am to 18 pm, peaking at about 12 am, and reaching about 652W/m2。
The typical daily wind speed profile is shown in FIG. 6, which fluctuates from about 6.6m/s to about 7.5m/s, peaking at about 17 PM, and about 7.48 m/s.
Renewable energy is connected to the power network 10 through a virtual synchronous machine 21(VSG) after being subjected to direct current networking, the virtual synchronous machine 21 can adjust the voltage and frequency of the microgrid through an active power-frequency control loop and a reactive power-voltage control loop, the voltage of a renewable energy power direct current bus 22 can be controlled through a power electronic converter 27, and when the voltage of the direct current bus 22 is constant, the grid-connected voltage and frequency of the virtual synchronous machine 21 are shown in fig. 7 and 8.
According to the type of the ground load, a Centaur 50 type gas turbine is selected as a motive power device, the rated power of the Centaur 50 is 4600kW, the capacities of a waste heat boiler, a lithium bromide absorption type refrigerator and electric refrigeration are selected according to the maximum heat and cold load of a demand side and the heat carried by exhaust gas of the gas turbine, namely 8000kW and 10000kW respectively, the electric refrigeration capacity is 2000kW, the solar photovoltaic is 1000kW for installation, the fan is 1000kW, the total storage battery is 26500kWh, and the data of all devices under the load are shown in the following table:
And (3) annotation: the minus sign "-" in the above table indicates the time of battery charging.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The wind-solar-combustion-storage integrated energy system based on the wind-solar virtual synchronous machine is characterized by comprising an energy supply system (1), a scheduling control system (2) and energy users (3), wherein the energy supply system (1) comprises a wind-solar-generation virtual synchronous machine subsystem (4), an electric storage device (5), a cold-storage/heat-storage subsystem (6) and a natural gas distributed energy supply subsystem (7), the scheduling control system (2) comprises an integrated energy system control center (8), an information database (9), an electric power network (10), a heat supply/cold supply network (11) and an information network (12), the energy supply system (1) is connected with the scheduling control system (2) through the electric power network (10), the heat supply/cold supply network (11) and the information network (12), and the energy users (3) are connected with the scheduling control system (2) through the electric power network (10), The system comprises a heat supply/cold supply network (11) and an information network (12), wherein a wind-solar power generation virtual synchronous machine subsystem (4) is connected with a power network (10) and an electric storage device (5), a natural gas distributed energy supply subsystem (7) is connected with the power network (10) and the heat supply/cold supply network (11), a cold storage/heat storage subsystem (6) is connected with the heat supply/cold supply network (11) to realize bidirectional flow of heat energy and cold energy, the electric storage device (5) is connected with the power network (10) to realize multidirectional power transmission, the power network (10) and the heat supply/cold supply network (11) are connected with energy users (3), the information network (12) is connected with the energy users (3), a comprehensive energy system control center (8) is connected with the information network (12), the comprehensive energy system control center (8) is connected with an information database (9), the information database (9) is interconnected with an information network (12), and the heat/cold supply network (11) and the power network (10) are both interconnected with the information network (12).
2. The wind-solar-combustion-storage integrated energy system based on the wind-solar virtual synchronous machine is characterized in that the natural gas distributed energy supply subsystem (7) comprises a gas turbine power generation device (13), a waste heat boiler (14), a afterburning boiler (15), a steam-type refrigerator (16) and an electric refrigerator (17), the input end of the gas turbine power generation device (13) is connected with a natural gas pipeline, the output end of the gas turbine power generation device (13) is connected with the waste heat boiler (14) through a smoke pipeline, the waste heat boiler (14) is connected with the steam-type refrigerator (16) through a steam pipeline, the waste heat boiler (14) and the afterburning boiler (15) are both connected with a water supply system (18), the afterburning boiler (15) is connected with the natural gas pipeline, and the output ends of the waste heat boiler (14) and the afterburning boiler (15) are both connected with the input end of the steam-type refrigerator (16) through a steam pipeline And the electric refrigerator (17) is connected with the power network (10), and the gas turbine power generation device (13), the waste heat boiler (14), the afterburning boiler (15), the steam type refrigerator (16) and the electric refrigerator (17) are connected with the heat supply/cold supply network (11).
3. The wind-solar-energy-combustion-storage integrated energy system based on the wind-solar virtual synchronous machine is characterized in that the wind-solar-energy-generation virtual synchronous machine subsystem (4) comprises a wind power generation device (19), a photovoltaic power generation device (20) and a virtual synchronous machine (21), wherein the wind power generation device (19) and the photovoltaic power generation device (20) are connected with the virtual synchronous machine (21) through a direct current bus (22).
4. The wind-solar-combustion-storage integrated energy system based on the wind-solar-virtual synchronous machine according to claim 3, characterized in that the wind power generation device (19) comprises a wind power generation unit (23) and a rectifier AC/DC (24), wherein the output end of the wind power generation unit (23) is connected with the input end of the rectifier AC/DC (24), and the output end of the rectifier AC/DC (24) is connected with the direct current bus (22).
5. The wind-solar energy-fired-storage integrated energy system based on the wind-solar virtual synchronous machine is characterized in that the photovoltaic power generation device (20) comprises a solar photovoltaic panel (25) and a first direct current chopper DC/DC (26), the output end of the photovoltaic power generation device (20) is connected with the input end of the first direct current chopper DC/DC (26), and the output end of the direct current chopper DC/DC is connected with the direct current bus (22).
6. The wind-solar-energy-burning-storage integrated energy system based on the wind-solar-energy virtual synchronous machine is characterized in that the virtual synchronous machine (21) comprises a power electronic converter (27), a second direct-current chopper DC/DC (28) and a wind-solar-energy virtual synchronous control system (29), the power electronic converter (27) is connected with the direct-current bus (22), the second direct-current chopper DC/DC (28) is interconnected with the direct-current bus (22), the electric storage device (5) is interconnected with the second direct-current chopper DC/DC (28), the power electronic converter (27) is connected with the power network (10) and the wind-solar-energy virtual synchronous control system (29), and the wind-solar-energy virtual synchronous control system (29) is connected with the power electronic converter (27).
7. The wind-solar-combustion-storage integrated energy system based on the wind-solar-virtual synchronous machine is characterized in that the power storage device (5) is a storage battery, and the storage battery is interconnected with a second direct current chopper DC/DC (28).
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