CN115764977A - Island energy supply method based on combined cooling heating and power system - Google Patents
Island energy supply method based on combined cooling heating and power system Download PDFInfo
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- CN115764977A CN115764977A CN202211235197.8A CN202211235197A CN115764977A CN 115764977 A CN115764977 A CN 115764977A CN 202211235197 A CN202211235197 A CN 202211235197A CN 115764977 A CN115764977 A CN 115764977A
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D15/00—Other domestic- or space-heating systems
- F24D15/02—Other domestic- or space-heating systems consisting of self-contained heating units, e.g. storage heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
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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
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Abstract
The invention relates to an island energy supply method based on a combined cooling heating and power system, which is characterized in that an electric network, a gas network and a heating/cooling network are constructed by utilizing natural energy of an island to respectively supply energy to users, energy among the three energy networks is mutually coupled through the coordination control of the combined cooling heating and power system, the combined cooling heating and power system is an information processing and control central system, and the energy flow among the electric network, the gas network and the cooling/heating network is regulated and controlled through data information acquired by a plurality of information acquisition modules, so that the stability of each network is ensured. The invention utilizes the combined cooling heating and power supply system to coordinate and control three energy supply networks, namely an electric network, a gas network and a heat/cold network, so that the stability of the energy supply system is far greater than that of a single energy supply network; according to the natural advantages of the islands, the islands are supplied with natural energy; the energy supply is green and pollution-free, and the problems of uneconomic efficiency, environmental pollution and the like caused by long-distance power transmission and traditional thermal power plant establishment are avoided.
Description
Technical Field
The invention belongs to the field of energy production and supply, and particularly relates to an island energy supply method based on a combined cooling, heating and power system.
Background
The green multifunctional ecological system is a green ecological system which is composed of various energy networks and can supply various loads to the system. The system mainly comprises an electric network, a gas network and a heat/cold network. Each energy network provides energy, directly or indirectly, to various loads in the system. In island areas where the power grid is difficult to reach, the power supply of the island areas is difficult to guarantee, and the lives of residents on the islands are influenced. The existing new energy power generation such as wind power generation, solar power generation and the like has the characteristics of randomness, intermittence and the like, and the characteristics are not beneficial to the stability of a power system.
In order to ensure the stability of the power system, an island energy control mechanism and a corresponding energy control system are urgently needed to be researched, so that the system is in a stable operation state while the solar power generation and wind power generation technologies are ensured to meet the requirements.
Disclosure of Invention
The invention aims to solve the problems and provides an island energy supply method based on a combined cooling heating and power supply system, wherein natural energy is fully utilized to construct an electric network, a gas network and a heat/cold network, and the three energy networks are mutually coupled to supply corresponding loads; the electric network, the gas network and the hot/cold network are mutually reserved, and the stability of an energy supply system is ensured.
The technical scheme of the invention is an island energy supply method based on a combined cooling heating and power system, wherein a power network, a gas network and a heat/cold network are constructed by using natural energy of an island to respectively supply energy to users, the three energy networks are mutually coupled through the coordination control of the combined cooling heating and power system, the combined cooling and power system is an information processing and control central system, and the energy flow among the power network, the gas network and the cold/heat network is regulated and controlled through data information acquired by a plurality of information acquisition modules, so that the stability of each network is ensured.
The island energizing method comprises the following steps:
judging the running state of the power system according to data provided by an information acquisition module of the power generation unit, an information acquisition module of the energy storage unit and an information acquisition module of the electric network; when the electric network works normally, the energy storage unit and the electric load participate in the regulation of the electric power system, and when the energy of the electric network is sufficient, the electric network charges the energy storage unit; when the power of the electric network is deficient, the electric network absorbs electric energy to the energy storage unit;
according to data provided by an information acquisition module of the power generation unit and an information acquisition module of the gas network, when natural energy is sufficient, the output power of the power generation unit is larger, and the energy of the gas network is low, the electric network starts an air compressor to provide energy for the gas network;
according to data provided by an information acquisition module of the power generation unit and an information acquisition module of the hot/cold network, when the temperature of the hot/cold network is lower and the output power of the power generation unit is higher, the electric network starts a heat pump to provide energy for the hot/cold network;
monitoring the energy of the power generation unit through an information acquisition module of the power generation unit, and when the energy of the power generation unit is sufficient or deficient, absorbing or inputting the energy to an electric network by an energy storage unit; controlling the fluctuation of the output electric energy according to the real-time data of the electric network provided by an information acquisition module of the electric network;
the data information of the power generation unit and the energy storage unit is acquired through an information acquisition module of the power generation unit and an information acquisition module of the energy storage unit, when the generated energy and the stored energy are higher, the electric network supplies energy to the air network through an air compressor, and when the generated energy and the stored energy are lower, the air network supplies energy to the electric network through an air-cooled/thermoelectric triple-generation system;
the information acquisition module of the hot/cold network is used for acquiring the temperature information of the hot/cold network, and when the temperature is too low, the air network supplies energy to the hot/cold network through the cold-heat-electricity triple-generation system.
The island multifunctional ecological energy system adopting the island energy supply method comprises a power generation unit, an energy storage unit, an electric network, an electric load, a heat/cold load, an air network, a heat/cold network and a combined cooling, heating and power system, wherein the power generation unit, the energy storage unit and the electric load are respectively connected with the electric network, the electric network is connected with the air network through an air compressor, the electric network is connected with the heat/cold network through a heat pump, the heat/cold network is connected with the heat/cold load, the air network and the heat/cold network are respectively connected with the combined cooling, heating and power system, the combined cooling and power system is connected with the electric network through a generator, a first controller is arranged between the electric network and the energy storage unit, a second controller is arranged between the electric network and the air compressor, a third controller is arranged between the combined cooling, heating and power system and the generator, a fourth controller is arranged between the electric network and the heat pump, the heat/cold network is connected with the energy storage unit through a fifth controller, a sixth controller is arranged between the heat/cold network and the combined cooling and power system, and the first controller, the second controller, the third controller, the combined cooling and cold network are respectively connected with the combined cooling and power system, and the combined cooling and used for coordinating and processing system; the gas network is a large energy reserve network.
The power generation unit is connected with the first controller through the first information acquisition module, connected with the fourth controller through the fifth information acquisition module and connected with the sixth controller through the sixth information acquisition module; the first information acquisition module, the fifth information acquisition module and the sixth information acquisition module are respectively connected with a combined cooling heating and power system.
The energy storage unit is provided with a second information acquisition module which is respectively connected with the first controller and the combined cooling heating and power system.
The electric network is provided with a third information acquisition module, and the third information acquisition module is respectively connected with the first controller and the combined cooling heating and power system.
The air network is provided with a fourth information acquisition module, and the fourth information acquisition module is connected with a combined cooling heating and power system.
The heat/cold network is respectively connected with the sixth controller and the combined cooling, heating and power system through the sixth information acquisition module, and is connected with the combined cooling, heating and power system through the seventh information acquisition module.
The combined cooling heating and power system is an information processing and control center system, and regulates and controls energy flow among the electric network, the gas network and the cold/heat network through data information acquired by the first to seventh information acquisition modules, so as to ensure the stability of each network.
Preferably, the energy storage unit comprises an electric energy storage part, a pumped storage part and a hot/cold energy storage part, wherein the electric energy storage part comprises an electric automobile module and an energy storage battery; the electric automobile module includes electric automobile and fills electric pile, fills electric pile and electric network connection. The electric automobile is a special electric energy storage device, and when the electric network has serious energy loss, the electric automobile provides energy for the electric network through the charging pile.
Preferably, the gas network is provided with a gas system protection device, the gas system protection device comprises a gas pressure detector and a gas valve, when the gas pressure of the gas network is too high, the gas pressure detector transmits gas pressure information to the gas valve control device, the gas valve is opened to reduce the gas pressure of the gas network, and the safe energy storage of the gas network is ensured.
Preferably, the energy of the heat/cold network is mainly from a geothermal energy port and a light-gathering and heat-charging port, an oil pipe and a water pipe are arranged in the heat/cold network, tap water is arranged in the water pipe, and the water pipe is connected to a load consumption area. The oil pipe and the water pipe are distributed side by side, heat conducting oil is arranged in the oil pipe, and the heat conducting oil is divided into cold state heat conducting oil and hot state heat conducting oil after passing through the separating valve and is respectively responsible for refrigeration and heating.
Preferably, the heat/cold load comprises a hot water link, a heating/cooling link; the hot water link is connected with a water pipe of the hot/cold network, and the heating/refrigerating link is connected with an oil pipe of the hot/cold network.
The electric load comprises a common load and a random load, the random load has no obvious time interval characteristic, and the charge change characteristic has randomness.
Compared with the prior art, the invention has the beneficial effects that:
1) The invention utilizes the combined cooling heating and power supply system to coordinate and control three energy supply networks of an electric network, a gas network and a heat/cold network, and the energy between the three networks is mutually coupled, so that the stability of the energy supply system is far greater than that of a single energy supply network;
2) The invention reduces the loss of energy in the conversion process and increases the energy utilization rate through the load of a system corresponding to a special energy supply network;
3) The invention utilizes the air network to adjust the electric network and the hot/cold network according to the load requirement, and controls the input or output energy, so that the system has more flexibility and robustness;
4) According to the natural advantages of the island, natural energy is supplied to the island; the energy supply is green and pollution-free, and the problems of uneconomic efficiency, environmental pollution and the like caused by long-distance power transmission and traditional thermal power plant establishment are avoided.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural diagram of an island multifunctional ecological energy system;
the system comprises a power generation unit 1, an energy storage unit 2, an electric network 3, an air network 4, a heat/cold network 5, a combined cooling heating and power supply system 6, a heat pump 7, an air compressor 8, a generator 9, a light-gathering and heat-charging port 10, a first information acquisition module 11, a second information acquisition module 12, a third information acquisition module 13, a fourth information acquisition module 14, a fifth information acquisition module 15, a sixth information acquisition module 16, a seventh information acquisition module 17, a gateway 18, a first thermometer 19, a second thermometer 20, a partition valve 21, a water pipe 22, an oil pipe 23, a first power meter 24, a second power meter 25, a first controller 26, a second controller 27, a third controller 28, a fourth controller 29, a fifth controller 30, a sixth controller 31, a seventh controller 32, a pressure detector 33, an air valve 34, an electric load 35, a heat/cold load 36, a heat/cold load 37, an electric automobile module 201, an energy storage oscilloscope 202, a water pumping and energy storage part 204.
Detailed Description
In the embodiment, natural energy is fully utilized to supply energy for daily required loads of residents in remote islands, and a green island type ecosystem in which an electric network, an air network and a heat/cold network are mutually coupled is established. The power source of the electric network is mainly derived from abundant solar energy and wind energy of the island, and the power consumption of residents in the island is met by utilizing natural energy and combining solar photovoltaic and offshore wind power generation technologies. The main energy sources of the heat/cold network are geothermal energy and solar energy, and the energy provides hot water for residents and controls indoor temperature through carrier water and carrier heat conduction oil. The gas network is a large energy storage network, and on the premise that natural energy is abundant and the other two networks meet the self load requirements, the other two networks supplement energy for the gas network. When the natural energy is deficient, the air network is an electric network, and the hot/cold network supplements the energy. The islands are required to be guaranteed to be supplied with power uninterruptedly to the maximum extent.
As shown in fig. 1, an island multifunctional ecological energy system includes a power generation unit 1, an energy storage unit 2, an electric network 3, an electric load 35, a heat/cold load 36, an air network 4, a heat/cold network 5, a combined cooling, heating and power system 6, wherein the power generation unit 1, the energy storage unit 2, and the electric load 35 are respectively connected to the electric network 3, the electric network 3 is connected to the air network 4 through an air compressor 8, the electric network 3 is connected to the heat/cold network 5 through a heat pump 7, the heat/cold network 5 is connected to the heat/cold load 36, the air network 4, the heat/cold network 5 are respectively connected to the combined cooling, heating and power system 6, the combined cooling, heating and power system 6 is connected to the electric network 3 through a generator 9, a first controller 26 is disposed between the electric network 3 and the energy storage unit 2, a second controller 27 is disposed between the electric network 3 and the compressor air 8, a third controller 28 is disposed between the combined cooling, a fourth controller 29 is disposed between the electric network 3 and the heat pump 7, the combined cooling, the heat/cold network 5 is connected to the sixth controller 30, a sixth controller 28 and a third controller 31 are disposed between the combined cooling, and the electric power system 6, and a third controller 29 are disposed between the combined cooling and a third controller 31, and a third controller 30 are disposed between the combined cooling controller for controlling system for controlling the combined cooling and a third controller 29; the gas network 4 is a large energy reserve network; the combined cooling heating and power system 6 is an information processing and control center system.
A gateway 18 is arranged between the first controller 26 and the combined cooling heating and power system 6, and the first controller 26, the second controller 27 and the third controller 28 are respectively connected with the gateway 18.
The power generation unit 1 is provided with a first power meter 24 and a second power meter 25, the first power meter 24 is connected with a first controller 26 through a first information acquisition module 11, the second power meter 25 is connected with a fourth controller 29 through a fifth information acquisition module 15, and the second power meter 25 is connected with a sixth controller 31 through a sixth information acquisition module 16; the first information acquisition module 11, the fifth information acquisition module 15 and the sixth information acquisition module 16 are respectively connected with the combined cooling heating and power system 6.
The energy storage unit 2 is provided with a second information acquisition module 12, and the second information acquisition module 12 is respectively connected with the first controller 26 and the gateway 18.
The electric network 3 is provided with an oscilloscope 37 and a third information acquisition module 13, and the third information acquisition module 13 is respectively connected with the first controller 26 and the gateway 18.
The gas network 4 is provided with a fourth information acquisition module 14, and the fourth information acquisition module 14 is connected with the combined cooling heating and power system 6; the gas network 4 is provided with a gas pressure gauge 33.
The heat/cold network 5 is provided with a first thermometer 19, a second thermometer 20, a sixth information acquisition module 16 and a seventh information acquisition module 17, wherein the sixth information acquisition module 16 is respectively connected with a sixth controller 31 and a combined cooling, heating and power supply system 6; the seventh information acquisition module 17 is connected with the combined cooling heating and power system 6.
The hot/cold network 5 is connected with a light and heat gathering port 10, and the light and heat gathering port 10 comprises a heat collector, a transparent partition plate and a heat insulation layer; the hot/cold network 5 is connected to a geothermal energy port.
The power generation unit 1 includes a photovoltaic power generation portion and a wind power generation portion. The photovoltaic power generation part and the wind power generation part are respectively connected with a converter corresponding to the characteristics of the photovoltaic power generation part and the wind power generation part, and the converter is connected with the electric network 3 in parallel to supply power. The power of the electrical network 3 is mainly derived from the power generating unit 1. The energy of the power generation unit 1 is monitored through the first information acquisition module 11, and when the energy of the power generation unit 1 is sufficient or deficient, the energy storage unit 2 absorbs or inputs energy to the electric network 3. Meanwhile, the fluctuation of the output electric energy is controlled according to the real-time data of the electric network 3 provided by the third information acquisition module 13, so that the purpose of stabilizing the system is achieved.
The energy storage unit 2 comprises an electric energy storage part, a pumped storage part 203 and a hot/cold energy storage part 204, wherein the electric energy storage part comprises an electric automobile module 201 and an energy storage battery 202; the electric vehicle module 201 comprises an electric vehicle and a charging pile, and the charging pile is connected with the electric network 3. The electric vehicle is a special electric energy storage device, and when the electric network 3 has serious energy loss, the electric vehicle provides energy for the electric network 3 through a charging pile.
The electrical load 35 includes a common load and a random load, the random load has no obvious time interval characteristic, and the charge variation characteristic has randomness.
The gas network 4 is a large energy storage network, and when the power of the electric network 3 and the heat/cold network 5 is insufficient, the gas network 4 supplies power to the electric network 3 and the heat/cold network 5 through the cooling, heating and power triple system 6. If the electric network 3 and the hot/cold network 5 are insufficient at the same time, the energy is firstly supplied to the electric network 3, and the normal operation of the electric network 3 is ensured.
The data information of the power generation unit 1 and the energy storage unit 2 is acquired through the first information acquisition module 11 and the second information acquisition module 12, when the generated energy and the stored energy are high, the electric network 3 supplies energy to the air network 4 through the air compressor 8, and when the generated energy and the stored energy are low, the air network 4 supplies energy to the electric network 3 through the air cooling/thermoelectric triple power supply system 6.
The gas network 4 is provided with a gas system protection device, the gas system protection device comprises a gas pressure detector 33 and a gas valve 34, when the gas pressure of the gas network 4 is too high, the gas pressure detector 33 transmits gas pressure information to a gas valve 34 control device, the gas valve 34 is opened to reduce the gas pressure of the gas network 4, and the safe energy storage of the gas network 4 is ensured.
The air network 4 is a first backup energy network of the electrical network 3 and the hot/cold network 5. The stored energy of the gas network 4 is measured by the pressure gauge 33 and when the gas pressure is too low, the gas network 4 cannot supply energy any more. If the heat/cold energy storage is low and the temperatures of the hot water link and the heating/refrigerating link are too low, the electric network 3 supplies energy to the heat/cold network 5 through the heat pump 7 on the premise of ensuring the normal operation of the electric network 3.
The energy of the heat/cold network 5 mainly comes from the geothermal energy port and the light-gathering and heat-charging port 10, an oil pipe 23 and a water pipe 22 are arranged in the heat/cold network 5, and the water pipe 22 is a double-layer structure with tap water arranged in the inner layer and is connected to a load consumption area. The oil pipe 23 and the water pipe 22 are distributed side by side, heat conducting oil is arranged in the oil pipe, and the heat conducting oil is divided into cold state heat conducting oil and hot state heat conducting oil after passing through the separating valve 21 and is respectively responsible for refrigeration and heating. A seventh controller 32 is arranged between the water pipe 22 and the oil pipe 23, and the seventh controller 32 is connected with the seventh information acquisition module 17. According to the temperature information of the water pipe 22 acquired by the seventh information acquisition module 17, when the temperature is lower than or higher than the threshold value of the seventh controller 17, cold/hot state heat conducting oil is injected into the outer layer of the water pipe 22, and the heat of the hot fluid is transferred to the cold fluid by using the principle of a heat exchanger.
The hot/cold load 36 includes a hot water stage, a heating/cooling stage; the hot water link is connected with the water pipe 22 of the hot/cold network 5, and the heating/cooling link is connected with the oil pipe of the hot/cold network 5.
The temperature information of the heat/cold network 5 is collected through the seventh information collecting module 17, and when the temperature is too high, the heat/cold network 5 inputs energy to the heat/cold energy storage part 204; when the temperature is too low, the heat/cold energy storage part 204 inputs energy to the heat/cold network 5, the air network 4 supplies energy to the heat/cold network 5 through the combined cooling heating and power system 6, the energy of the air network 4 and the heat/cold network 5 flows in a single direction, and only the air network 4 flows to the heat/cold network 5.
The first to seventh information acquisition modules respectively comprise a data measurement instrument and a HINET intelligent gateway device, wherein the data measurement instrument is a power measurement instrument, a temperature measurement instrument and an air pressure measurement instrument. And uploading various types of data through the HINET intelligent gateway equipment. The HINET intelligent gateway equipment has the functions of remote uploading, downloading communication, parameter early warning and the like, has a plurality of ports, can be flexibly accessed to various equipment data platforms, is combined through various communication modes, and can adapt to various complex environments.
The combined cooling heating and power system 6 is an information processing and control center system, processes information in the HINET intelligent gateway equipment, regulates and controls energy flow among the electric network 3, the air network 4 and the cooling/heating network 5 through data information, and ensures the stability of each network.
And judging the running state of the power system according to the data provided by the first information acquisition module 11, the second information acquisition module 12 and the third information acquisition module 13, and providing data for the adjustment of the power system. When the electrical network 3 is operating normally, the energy storage unit 2 and the electrical load 35 participate in the power system regulation. When the energy of the electric network 3 is sufficient, the electric network 3 charges the energy storage unit 2. When the electric network 3 is short of energy, the electric network 3 absorbs electric energy to the energy storage unit 2.
According to the data provided by the first information acquisition module 11 and the fourth information acquisition module 14, when the natural energy is sufficient, the output power of the power generation unit 1 is large, and the energy of the air network 4 is low, the electric network 3 starts the air compressor 8 to provide energy for the air network 4.
According to the data provided by the first information acquisition module 11 and the fifth information acquisition module 15, when the temperature of the hot/cold network 5 is low and the output power of the power generation unit 1 is high, the electric network 3 starts the heat pump 7 to provide energy for the hot/cold network 5.
The geothermal energy port is directly used for heating, and the heat energy is controlled and stored through a heat energy heating water pipe 22 and an oil pipe 23; the light-focusing and heat-charging port 10 comprises a heat collector, a transparent partition plate and a heat insulation layer, the light-focusing and heat-charging port has high light absorption degree in the solar spectrum, and simultaneously reduces radiation loss as much as possible; the heat storage material stores heat energy through self temperature change, and the heat storage material stores energy by adopting the assistance of oil heat collection and water heat collection; the heat conducting material transfers heat energy downwards, and heat conducting flow pipeline material is used. The transparent partition plate on one hand allows light to irradiate the heat collector and on the other hand protects the heat collector from the influence of environmental changes. The heat insulation layer and the transparent partition plate form certain heat insulation outside the light and heat collecting port so as to reduce loss in the heat energy conversion and transfer process. Sunlight irradiates on the light-focusing heat-charging port, the transparent partition plate excites the heat collector to perform light-heat conversion, the heat conducting material reflects heat energy through the change of oil temperature and water temperature, oil and water flow in the pipeline and are protected by the heat-insulating layer, heat energy loss is reduced, certain energy loss is generated through the transparent partition plate and the heat-insulating layer along with the temperature rise of the light-focusing heat-charging port, light-heat balance is gradually realized until the temperature of the light-focusing heat-charging port reaches a certain balance point, and the system keeps balance.
This example utilizes the island's natural energy supply itself, based on the natural advantages of the island. The energy supply is green and pollution-free, the problems of uneconomic efficiency, environmental pollution and the like caused by long-distance power transmission and the establishment of a traditional thermal power plant are avoided, and a new idea is provided for the establishment of a remote regional power grid.
Claims (5)
1. An island energy supply method based on a combined cooling heating and power system is characterized in that a power network, a gas network and a heating/cooling network are constructed by using natural energy of an island to respectively supply energy to users, the three energy networks are mutually coupled through the coordination control of the combined cooling heating and power system, the combined cooling heating and power system is an information processing and control central system, and the energy flow among the power network, the gas network and the cooling/heating network is regulated and controlled through data information acquired by a plurality of information acquisition modules, so that the stability of each network is ensured;
the island energizing method comprises the following steps:
judging the running state of the power system according to data provided by an information acquisition module of the power generation unit, an information acquisition module of the energy storage unit and an information acquisition module of the electric network; when the electric network works normally, the energy storage unit and the electric load participate in the regulation of the electric power system, and when the energy of the electric network is sufficient, the electric network charges the energy storage unit; when the power of the electric network is deficient, the electric network absorbs electric energy to the energy storage unit;
according to data provided by an information acquisition module of the power generation unit and an information acquisition module of the gas network, when natural energy is sufficient, the output power of the power generation unit is larger, and the energy of the gas network is low, the electric network starts an air compressor to provide energy for the gas network;
according to data provided by an information acquisition module of the power generation unit and an information acquisition module of the hot/cold network, when the temperature of the hot/cold network is lower and the output power of the power generation unit is higher, the electric network starts a heat pump to provide energy for the hot/cold network;
monitoring the energy of the power generation unit through an information acquisition module of the power generation unit, and when the energy of the power generation unit is sufficient or deficient, absorbing or inputting the energy to an electric network by an energy storage unit; controlling the fluctuation of the output electric energy according to the real-time data of the electric network provided by an information acquisition module of the electric network;
the data information of the power generation unit and the energy storage unit is acquired through an information acquisition module of the power generation unit and an information acquisition module of the energy storage unit, when the generated energy and the stored energy are higher, the electric network supplies energy to the air network through an air compressor, and when the generated energy and the stored energy are lower, the air network supplies energy to the electric network through an air-cooled/thermoelectric triple-generation system;
the temperature information of the heat/cold network is collected through an information collection module of the heat/cold network, and when the temperature is too low, the air network supplies energy to the heat/cold network through a cold-heat-electricity triple-generation system.
2. The island energy supply method according to claim 1, wherein the air network is provided with an air system protection device, the air system protection device comprises an air pressure detector and an air valve, when the air pressure of the air network is too high, the air pressure detector transmits air pressure information to the air valve control device, and the air valve is opened to reduce the air pressure of the air network, so that the safe energy storage of the air network is ensured.
3. The island energy supply method according to claim 1, wherein the energy storage unit comprises an electric energy storage section, a pumped-hydro energy storage section and a hot/cold energy storage section, the electric energy storage section comprising an electric vehicle module, an energy storage battery; the electric automobile module comprises an electric automobile and a charging pile, and the charging pile is connected with an electric network; the electric automobile is a special electric energy storage device, and when the electric network has serious energy loss, the electric automobile provides energy for the electric network through the charging pile.
4. The island energy supply method according to claim 1, wherein the heat/cold network energy is mainly derived from geothermal energy ports and light-gathering and heat-charging ports, an oil pipe and a water pipe are arranged in the heat/cold network, tap water is filled in the water pipe, and the water pipe is connected to a load consumption area; the oil pipe and the water pipe are distributed side by side, heat conducting oil is arranged in the oil pipe, and the heat conducting oil is divided into cold state heat conducting oil and hot state heat conducting oil after passing through the separating valve and is respectively responsible for refrigeration and heating.
5. The island energizing method according to any of claims 1 to 4, wherein the power generation unit comprises a photovoltaic power generation section and a wind power generation section.
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| CN112350310A (en) * | 2020-10-29 | 2021-02-09 | 怀化智信能源科技有限公司 | Intelligent new energy storage method and intelligent new energy storage device |
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| CN207218260U (en) * | 2017-06-16 | 2018-04-10 | 国网山东省电力公司经济技术研究院 | A kind of terminal energy supplying system |
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