CN211403476U - Heat energy and electric energy integration microgrid system - Google Patents
Heat energy and electric energy integration microgrid system Download PDFInfo
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- CN211403476U CN211403476U CN201921416437.8U CN201921416437U CN211403476U CN 211403476 U CN211403476 U CN 211403476U CN 201921416437 U CN201921416437 U CN 201921416437U CN 211403476 U CN211403476 U CN 211403476U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a heat energy and electric energy integration microgrid system. The energy router is connected with the energy consumption terminal and can distribute electric energy to users of the energy consumption terminal or the energy storage device or be incorporated into the power grid. The advantages are that: the system integrates and distributes various different types of energy data for use, thereby greatly saving energy, greatly improving the resource utilization rate and the use efficiency, solving the problem of urban centralized heat supply without supplying heat by a small boiler through the system design, further solving the environmental protection problem and saving resources, and finally realizing the decentralized of the power grid and the decentralized of heat energy.
Description
Technical Field
The invention relates to an integrated micro-grid system, in particular to a heat energy and electric energy integrated micro-grid system.
Background
The power grid is a small-sized power generation and distribution system formed by collecting a distributed power supply, an energy storage device, an energy conversion device, related loads, a monitoring device and a protection device, is an autonomous system capable of realizing self control, protection and management, can be operated in a grid-connected mode with a large power grid or in an isolated mode, and can be switched between two operation modes through a solid-state switch; the basic requirement for the stability of the power system when the active power and the reactive power are balanced is also the same for the power grid, but the distributed power supply has the characteristics of intermittency and fluctuation, and the load change also has randomness, so that the challenge is brought to the stable operation of the power grid.
The problem can be well solved through an effective energy storage technology, the energy storage management system monitors the state of the distributed power supply, knows and predicts the output of the distributed power supply, adjusts the working state of the energy storage system to maintain power balance, and reduces a series of adverse effects of the distributed power supply on a power grid. When the microgrid is operated in an isolated island mode, the energy storage system can stabilize power fluctuation and keep stable power supply frequency, and when the voltage inside the power grid fluctuates, the energy storage system can provide reactive compensation, keep stable voltage and improve the quality of electric energy in the microgrid.
In addition, when the micro-grid is switched between a grid-connected working mode and an island working mode, a certain power shortage often exists, and the energy storage device installed in the micro-grid can guarantee the stable transition of the system under the two working modes, so that the stability of the system is guaranteed. Therefore, the energy storage technology plays an important role in realizing safe and stable operation of the microgrid and improving the utilization efficiency of renewable energy, and becomes one of the core technologies of the microgrid
However, the microgrid prior art mostly starts from distributed photovoltaic power generation, cooperate small-size wind-powered electricity generation, other renewable energy power generation such as biomass power generation are studied and patented, rarely go out from the energy storage end, including electric energy and heat energy as the main energy, how to use stored energy and heat-retaining energy as the core, thereby schedule heat energy and electric energy and reach the energy-conserving purpose and be the technological problem that an urgent need to be solved, in addition, in the current life, because heat energy and electric energy are difficult to effective interconnection, city central heating problem is outstanding, in order to realize the heat supply, the small boiler flowers all the time, there is the environmental pollution problem, moreover, this kind of heating mode still has the serious scheduling problem of energy waste.
Disclosure of Invention
The invention aims to provide a heat and electric energy integrated micro-grid system which can interconnect heat energy and electric energy, so that the environmental protection problem is solved, and the energy utilization rate is improved.
In order to solve the technical problems, the heat and electric energy integrated microgrid system comprises a mains supply, a renewable energy power generation device, a heat and energy storage device, wherein the mains supply, the renewable energy power generation device, the heat and energy storage device are all connected to an energy router through electrified circuits, the energy router is connected with a power grid, and the energy router is connected with an energy utilization terminal and can distribute electric energy to users of the energy utilization terminal or the energy storage device or be incorporated into the power grid.
The energy storage device comprises a heat storage device for storing heat energy and an electric storage device for storing electric energy, the heat storage device is directly connected to the heat energy generation device through a heat pipeline, and the electric storage device is connected with an external facility through a controller.
The renewable energy power generation, heat energy generation device, the energy storage device and the energy utilization terminal are all provided with signal acquisition equipment and can upload respective power generation, heat energy, energy storage, power utilization and heat utilization information to the server through the communication network and distribute electric energy and heat energy by the server.
The renewable energy power generation comprises wind power generation, photovoltaic power generation and biomass power generation, and the heat energy comprises solar heat, natural gas heat and electric heat.
The energy router is connected with the water heater through the power grid so that the water heater generates hot steam, the water heater is connected with the hot steam turbine through the hot steam tank for storing the hot steam, and the heat energy entering and stored in the hot steam tank can drive the hot steam turbine to generate electricity, so that the energy router can store electric energy through the energy storage device, be used by a user of an energy using terminal or be accessed into the energy router
The water heater comprises an electric water heater, a solar water heater and a natural gas water heater.
The invention has the advantages that:
the utility model discloses a power consumption terminal, including energy router, energy use terminal, energy utilization terminal, energy storage device, little boiler, energy router is connected with the electric wire netting, energy router is connected with the energy use terminal and can distribute the electric energy to the user of energy use terminal or energy storage device or incorporate the electric wire netting into from this, integrate the distribution use with the energy data of various different grade type, not only saved the energy greatly, resource utilization ratio and availability factor have still been provided by a wide margin, in addition, through this system design, do not need rethread small boiler to supply heat, the problem of city central heating is solved, thereby also solved the environmental protection problem and saved the resource.
Drawings
Fig. 1 is a schematic block diagram of an integrated heat and electric energy microgrid system of the present invention;
FIG. 2 is a schematic block diagram of the thermal energy conversion of the present invention;
FIG. 3 is a schematic diagram of the operating system of the present invention.
Detailed Description
The integrated thermal and electric energy microgrid system of the present invention is further described in detail with reference to the accompanying drawings and the detailed description.
The first embodiment is as follows:
as shown in the figure, the heat and electric energy integrated micro-grid system comprises a mains supply, a renewable energy power generation device (wind power, photovoltaic power generation, biomass power generation and the like), a heat energy device (solar heat, natural gas heat, electric heat and the like) and an energy storage device (electric energy storage and heat energy storage), wherein the mains supply, the renewable energy power generation device, the heat energy device and the energy storage device are all connected to an energy source router through a power line, and the energy source router is a core device for connecting a power grid and distributed power generation, storing electricity and using electricity and has the characteristic of distributing electric energy; in particular to a renewable energy power generation device which is connected with a local controller through a circuit (for example, wind power is a wind power controller, photovoltaic is a photovoltaic controller), the local controller is connected with an energy router through an interface, heat energy is connected with a cogeneration controller through a circuit, the cogeneration controller is connected with the energy router through an interface, an energy storage device is connected with the local controller through a circuit (for example, a lithium battery controller), the local controller is connected with the energy router through an interface, the energy router is connected with a power grid, the energy router is connected with an energy using terminal (load), the energy using terminal (load) is also connected with the local controller through a circuit, the local controller is connected with the energy router through an interface, and signal acquisition equipment is arranged on the renewable energy power generation device (photovoltaic, wind power generation and the like), the heat energy generation device, the energy storage device and the energy using terminal, the purpose of distributing electric energy to users of energy-using terminals or energy storage devices or merging the electric energy into a power grid is realized by connecting signal lines of signal acquisition equipment with respective renewable energy power generation, heat energy and energy storage devices and respective local controllers (electric energy) and combined heat and power supply controllers (heat energy) of energy-using terminals respectively and uploading respective information of power generation, heat energy, energy storage, electricity consumption, heat consumption and the like to a server through a communication network (communication bus) and distributing the electric energy and the heat energy by the server, and therefore the purposes of distributing the electric energy to users of the energy-using terminals or the energy storage devices or merging the electric energy into the power grid are realized, as shown in figure 1, 1 is a renewable energy communication line, 2 is a heat energy communication line, 3 is an energy storage communication line, 4 is an energy-using terminal communication line, and the renewable energy communication line, the heat energy communication line, the energy storage communication line and the energy-using terminal communication line are connected to, GPRS, fiber, RE485, etc.).
Furthermore, the energy storage device comprises a heat storage device for storing heat energy and an electric storage device for storing electric energy, the heat storage device is directly connected to the heat energy generation device through a heat pipeline, and the electric storage device is connected with an external facility through a local controller; preferably, the electricity storage is generally lithium batteries, lead batteries and sodium flow batteries; the heat storage general hot steam tank comprises an electric water heater, a solar water heater, a natural gas water heater and the like, wherein an energy source router is connected with the water heater through a power grid so as to enable the water heater to generate hot steam, the water heater is connected with a hot steam turbine through a hot steam tank for storing the hot steam, and the heat energy entering and stored in the hot steam tank can drive the hot steam turbine (the steam turbine) to generate electricity, so that the heat energy can be stored through an energy storage device, used by a user of an energy consumption terminal or connected to the energy source router for grid connection, and in addition, the heat energy can also be directly stored and supplied with heat through a heat energy converter.
Example two:
a use method of an integrated micro-grid system based on heat energy and electric energy is characterized in that: comprises the following steps of (a) carrying out,
A. the application method of the renewable energy (photovoltaic, wind power and the like) power generation access energy router comprises the following steps: the energy router determines to be directly distributed to the user of the energy utilization terminal or the energy storage device or be merged into the power grid according to the power utilization condition of the user of the energy utilization terminal; if the energy-consuming terminal user is consuming electricity, the first choice of renewable energy power generation is to enter the power-consuming equipment of the energy-consuming terminal user, if the energy-consuming terminal user has no electricity demand, the second choice is to enter an energy storage device (lithium battery) for electricity storage, the energy storage device (lithium battery) is fully stored, and the third choice is to merge redundant electric quantity into the power grid; the first choice for using energy to use the end user's electricity is to generate electricity from renewable energy sources (photovoltaic, wind, etc.); when renewable energy (photovoltaic, wind, etc.) generation is not available to the end user, the second option is the electricity of the energy storage device (lithium battery); when the power generation of renewable energy sources (photovoltaic, wind power and the like) and the power storage of an energy storage device (lithium battery) are not enough, the third choice is a power grid;
B. the use method of the heat energy access energy router comprises the following steps: thermal energy (natural gas) is flowed into the energy end user's heat consumer through the heat pipe first choice, if the heat consumer is already fully loaded, no thermal energy is needed; the second option flows to the hot steam drum if the user is not demanding and the hot steam drum is full; the third option is that the power is generated by a hot steam engine, the back part is similar to a renewable energy power generation path to operate, the user of the energy utilization terminal uses heat energy of a first selective heat storage device (a hot steam tank), and the heat energy of the hot steam tank is not enough; second option thermal energy generation (natural gas heat).
Claims (6)
1. The utility model provides a heat energy and electric energy integration microgrid system which characterized in that: including commercial power, renewable energy power generation, heat energy and energy memory, commercial power, renewable energy power generation, heat energy and energy memory all access energy router through the circular telegram circuit, energy router is connected with the electric wire netting, energy router is connected with the ability terminal and can distribute the electric energy to with the user or the energy memory at ability terminal or incorporate the electric wire netting into.
2. The integrated heat and power microgrid system according to claim 1, characterized in that: the energy storage device comprises a heat storage device for storing heat energy and an electric storage device for storing electric energy, the heat storage device is directly connected to the heat energy generation device through a heat pipeline, and the electric storage device is connected with an external facility through a controller.
3. The integrated heat and power microgrid system according to claim 1 or 2, characterized in that: the renewable energy power generation, heat energy generation device, the energy storage device and the energy utilization terminal are all provided with signal acquisition equipment and can upload respective power generation, heat energy, energy storage, power utilization and heat utilization information to the server through the communication network and distribute electric energy and heat energy by the server.
4. The integrated heat and power microgrid system according to claim 3, characterized in that: the renewable energy power generation comprises wind power generation, photovoltaic power generation and biomass power generation, and the heat energy comprises solar heat, natural gas heat and electric heat.
5. The integrated thermal and electric energy microgrid system according to claim 1, 2 or 4, characterized in that: the energy router is connected with the water heater through a power grid so that the water heater generates hot steam, the water heater is connected with the hot steam turbine through the hot steam tank for storing the hot steam, and the heat energy entering and stored in the hot steam tank can drive the hot steam turbine to generate electricity, so that the energy router can be used by a user of an energy consumption terminal or accessed into the energy router through the energy storage device for storing electric energy.
6. The integrated heat and power microgrid system according to claim 5, characterized in that: the water heater comprises an electric water heater, a solar water heater and a natural gas water heater.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110599008A (en) * | 2019-08-28 | 2019-12-20 | 镇江市高等专科学校 | Heat energy and electric energy integration microgrid system |
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| CN110599008A (en) * | 2019-08-28 | 2019-12-20 | 镇江市高等专科学校 | Heat energy and electric energy integration microgrid system |
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