CN210867281U - Multifunctional complementary park intelligent micro-grid system - Google Patents
Multifunctional complementary park intelligent micro-grid system Download PDFInfo
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- CN210867281U CN210867281U CN201821569631.5U CN201821569631U CN210867281U CN 210867281 U CN210867281 U CN 210867281U CN 201821569631 U CN201821569631 U CN 201821569631U CN 210867281 U CN210867281 U CN 210867281U
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- 230000000295 complement effect Effects 0.000 title claims abstract description 27
- 238000010248 power generation Methods 0.000 claims abstract description 52
- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 15
- 238000004146 energy storage Methods 0.000 claims description 13
- 238000002955 isolation Methods 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical group [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model discloses little grid system of complementary garden intelligence of multipotency, through setting up little electric wire netting control center and distributed communication interface unit, to each relatively independent little electric wire netting including power generation module, storage battery to and carry out whole coordination to auxiliary unit including converter and AC distribution cabinet, establish the communication connection based on ethernet, realize whole energy system's volume optimal scheduling and real-time coordinated control, thereby realize the low-cost operation of the complementary comprehensive energy system of multipotency.
Description
Technical Field
The embodiment of the application relates to a park intelligent micro-grid system with complementary functions.
Background
The multi-energy complementary comprehensive energy system is operated by adopting a mode of mutually supplementing various energy sources such as heat, electricity, gas and the like according to different resource conditions and energy utilization objects, so that the energy utilization rate of the energy system is improved, and the multi-energy complementary comprehensive energy system is the development direction of the future energy system.
At present, the multi-energy complementary comprehensive energy system in the market can be realized through automatic control, but only realizes monomer control under an integral framework, and does not realize comprehensive optimization as an organic integral.
SUMMERY OF THE UTILITY MODEL
The purpose of this application lies in: the utility model provides a complementary district intelligence microgrid system of multipotency, establish the communication connection based on ethernet, realize the amount optimal scheduling and the real-time coordinated control of whole energy system to realize the low-cost operation of the complementary comprehensive energy system of multipotency.
In order to achieve the purpose, the utility model adopts the following technical proposal:
providing a multi-energy complementary campus intelligent microgrid system comprising:
the power generation module comprises at least one of a wind power generation module and a solar power generation module and is used for producing off-grid power, and each power generation module is correspondingly provided with a power generation equipment controller;
the storage battery pack is connected with the power generation module and used for storing off-grid power generated by the power generation module, and the storage battery pack is provided with an energy storage controller;
the input end of the converter is connected with the power generation module and the power output end of the storage battery pack;
the input end of the alternating current power distribution cabinet is connected with the output end of the converter, the output end of the alternating current power distribution cabinet is connected with an electric load, and the alternating current power distribution cabinet is provided with a power distribution controller;
the micro-grid control center is used for controlling the operation states of the power generation module, the storage battery pack and the alternating current power distribution cabinet;
and the power generation equipment controller, the energy storage controller and the power distribution controller are connected with the microgrid control center through the distributed communication interface units.
The gas combined cooling heating and power system further comprises a gas combined cooling heating and power subsystem, and an electric energy output end of the gas combined cooling heating and power subsystem is connected with the alternating current power distribution cabinet.
The gas cooling, heating and power combined supply subsystem comprises a gas generator, a lithium bromide unit and a cooling and heating load, and the gas generator is connected with the alternating current power distribution cabinet.
The gas generator is characterized by also comprising a parallel switch, wherein the power generation module is interconnected with the gas generator through the parallel switch;
when the power grid fails and the gas generator stops, the parallel switch is disconnected, and the power generation module is switched to an off-grid mode;
when the power grid and/or the gas generator normally operate, the parallel switch is closed, and the power generation module is switched to a grid-connected mode.
The storage battery pack is a lithium battery.
And the power generation equipment controller, the energy storage controller and the power distribution controller are all DSP processors.
The power generation module charges the storage battery pack in a topological mode of PFC plus LLC.
Wherein, still include:
an isolation switch disposed between two cells of the battery pack to isolate the battery pack into two parts; the two separated parts are in independent charge and discharge states.
Wherein, the microgrid control center is also provided with a display screen.
The display screen is a touch screen.
Has the advantages that: according to the scheme, the microgrid which is relatively independent and comprises a power generation module and a storage battery pack is integrally coordinated through the microgrid control center and the distributed communication interface units, auxiliary units comprising the converter and the alternating current power distribution cabinet are established, and communication connection based on the Ethernet is established, so that the optimal scheduling and real-time coordination control of the whole energy system are realized, and the low-cost operation of the multi-energy complementary comprehensive energy system is realized.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a smart micro grid system of a campus with complementary functions according to an embodiment of the present application.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are for purposes of illustration and not limitation. It should be further noted that, for the convenience of description, only some of the structures related to the present application are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of the micro-grid system of park intelligence that the embodiment of the present invention provides is complementary, and as shown in the figure, this micro-grid system of park intelligence that is complementary of multipotency includes:
the power generation module 11 comprises at least one of a wind power generation module and a solar power generation module and is used for producing off-grid power, and each power generation module 11 is correspondingly provided with a power generation equipment controller;
the storage battery pack 13 is connected with the power generation module 11 and used for storing off-grid power generated by the power generation module 11, and the storage battery pack 13 is provided with an energy storage controller;
the input end of the converter 12 is connected with the power output ends of the power generation module 11 and the storage battery pack 13;
the input end of the alternating current power distribution cabinet 14 is connected with the output end of the converter 12, the output end of the alternating current power distribution cabinet 14 is connected with an electric load, and the alternating current power distribution cabinet 14 is provided with a power distribution controller;
the microgrid control center 15 is used for controlling the operation states of the power generation module 11, the storage battery pack 13 and the alternating current power distribution cabinet 14;
and the power generation equipment controller, the energy storage controller and the power distribution controller are connected with the microgrid control center 15 through the distributed communication interface units.
In the structure shown in fig. 1, the distributed communication interface unit is not separately illustrated, and only the symbol of the communication link illustrates the communication manner between the microgrid control center 15 and each of the other components.
Specifically, the converter 12 corresponds to a functional unit or a given conversion design in the whole system, and may be classified into a photovoltaic inverter, a wind power grid-connected inverter, an AC/DC converter, and a bidirectional converter.
In summary, by setting the microgrid control center 15 and the distributed communication interface units, the microgrid including the power generation module 11 and the storage battery 13, which are relatively independent, and the auxiliary units including the converter 12 and the ac power distribution cabinet 14 are integrally coordinated, and the communication connection based on the ethernet is established, so that the optimal scheduling and the real-time coordination control of the whole energy system are realized, and the low-cost operation of the multi-energy complementary comprehensive energy system is realized.
The gas combined cooling heating and power system further comprises a gas combined cooling heating and power subsystem, and an electric energy output end of the gas combined cooling heating and power subsystem is connected with the alternating current power distribution cabinet 14.
The types of gas generators that are currently more sophisticated and commonly used are gas internal combustion engine generators and gas turbine generators, with the generator type being selected according to the generator capacity and the heat to power ratio. If the selection is made according to the generator capacity, the gas combustion engine generator is suitable for building or regional energy supply projects of tens of thousands to hundreds of thousands square meters in general, and a gas turbine generator is adopted for large regional energy supply projects or project types of projects of hundreds of thousands square meters or more. If the selection is made according to the thermoelectric ratio, the type of the gas generator is selected according to the ratio of the cold and hot load of the user to the electric load, if the thermoelectric ratio is low, the gas internal combustion generator is selected, and if the thermoelectric ratio is high, the gas turbine generator is selected.
The gas cooling, heating and power combined supply subsystem comprises a gas generator, a lithium bromide unit and a cooling and heating load, and the gas generator is connected with the alternating current power distribution cabinet 14.
For the grid-connected phosgene multi-energy storage complementary combined cooling heating and power system, the capacity of the combined cooling heating and power subsystem is configured according to the principle of 'fixing power by heat'. The capacity of the generator set is determined under the condition of ensuring that the waste heat of the generator set is basically and completely utilized by heat for fixing the power, the maximum comprehensive energy utilization efficiency can be realized at the moment, the insufficient power is supplemented by a power grid, and the surplus power is on the Internet. The capacity of the lithium bromide unit is configured to meet the larger load of the cold load and the heat load. In the thermoelectric components, taking working conditions in winter and summer as an example, the gas generator is started to operate, the discharged waste heat exchanges cold water in summer and hot water in winter through the lithium bromide unit, and the exchanged cold water and hot water are used for cooling and heating loads. When the power grid is normal, the electric energy generated by the gas generator and the electric energy generated by the photovoltaic system are used for load, the insufficient part is supplemented by the power grid, and the surplus electric quantity is used for surfing the Internet; when the power grid fails, the gas generator continues to operate as a networking unit, and the energy storage converter 12 continues to operate in a grid-connected operation mode. The energy management system schedules the power of the photovoltaic system, the load and the gas generator in real time and maintains power balance.
The gas generator further comprises a parallel switch, and the power generation module 11 and the gas generator are interconnected through the parallel switch;
when the power grid fails and the gas generator stops, the parallel switch is disconnected, and the power generation module 11 is switched to an off-grid mode;
when the power grid and/or the gas generator normally operate, the parallel switch is closed, and the power generation module 11 is switched to a grid-connected mode.
The battery pack 13 is a lithium battery.
The storage battery pack 13 is used for storing electric energy or releasing electric energy, the storage battery pack 13 is a lithium battery, and compared with the existing lead-acid battery, the lithium battery is small in size and can reduce the occupied area; and the lithium battery has the advantages of long cycle service life, high energy, short charging time, high charging and discharging electric energy efficiency and the like.
And the power generation equipment controller, the energy storage controller and the power distribution controller are all DSP processors.
The power generation equipment controller, the energy storage controller and the power distribution controller are all used for communicating with the microgrid control center 15 and controlling the operation of corresponding functional units, a DSP (digital Signal processor) chip is adopted, the 32-bit DSP (digital Signal processor) chip is suitable for industrial control, motor control and the like, the application range is wide, the power generation equipment controller, the energy storage controller and the power distribution controller are equivalent to an upgrading version of a single chip microcomputer, an operation clock can quickly reach 150MHz, the processing performance can reach 150MIPS, 6.67ns (input/output) ports per instruction period are abundant, the power generation equipment controller is enough for general application of users to have 12-bit AD (analog-to-digital) conversion of 0-3.3 v and the like, an on-chip FLASH with 128K × 16 bits and an 18K × 16-bit SRAM (static random access memory) are basically not required to be externally expanded, and the power generation equipment controller, the epap and the eq are mutually independent modules and do not mutually interfere with each other, so that complex Signal output can be conveniently realized, and particularly, the epwm has a great improvement relative to the.
The power generation module 11 charges the storage battery pack 13 in a topology mode of PFC plus LLC.
A PFC + LLC topological mode is adopted in the charging process, the application of PFC reduces no-power loss, and a large amount of harmonic waves which can cause great pollution to the power grid environment are reduced. Besides, the PFC output overcomes the defect of narrow LLC input voltage range; LLC topology has the advantages of high conversion efficiency and low EMI (crosstalk ) interference.
Wherein, still include:
an isolation switch provided between two cells of the secondary battery pack 13 to isolate the secondary battery pack 13 into two parts; the two separated parts are in independent charge and discharge states.
The isolation state of the battery pack 13 is controlled by on/off of the isolation switch, specifically, when the isolation switch is turned off, the battery pack 13 is divided into two independent parts, and when the isolation switch is turned on, the battery pack 13 works as a whole. The independent charging and discharging state means that the two parts work independently, one part can be charged independently, and the other part can be discharged independently; or can be charged or discharged independently. The isolating switch can realize that one part of the batteries of the storage battery pack 13 are charged and the other part of the batteries are discharged, so that the influence of the simultaneous charging and discharging of the same battery on the service life is avoided.
The microgrid control center 15 is further provided with a display screen.
The display screen is convenient for a user to check the running state of the whole system and adjust the state based on the displayed content.
The display screen is a touch screen.
The product based on the touch screen is simpler to assemble, and the user operation is simpler.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present application and the technical principles employed. It will be understood by those skilled in the art that the present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the application. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the appended claims.
Claims (10)
1. Complementary little grid system of district intelligence of multipotency, its characterized in that includes:
the power generation module comprises at least one of a wind power generation module and a solar power generation module and is used for producing off-grid power, and each power generation module is correspondingly provided with a power generation equipment controller;
the storage battery pack is connected with the power generation module and used for storing off-grid power generated by the power generation module, and the storage battery pack is provided with an energy storage controller;
the input end of the converter is connected with the power generation module and the power output end of the storage battery pack;
the input end of the alternating current power distribution cabinet is connected with the output end of the converter, the output end of the alternating current power distribution cabinet is connected with an electric load, and the alternating current power distribution cabinet is provided with a power distribution controller;
the micro-grid control center is used for controlling the operation states of the power generation module, the storage battery pack and the alternating current power distribution cabinet;
and the power generation equipment controller, the energy storage controller and the power distribution controller are connected with the microgrid control center through the distributed communication interface units.
2. The multi-energy complementary park intelligent microgrid system of claim 1, further comprising a gas combined cooling heating and power subsystem, wherein an electric energy output end of the gas combined cooling heating and power subsystem is connected with the alternating current power distribution cabinet.
3. The multi-energy complementary park intelligent microgrid system of claim 2, wherein the gas cogeneration subsystem comprises a gas generator, a lithium bromide unit and a cold and hot load, the gas generator being connected to the ac distribution cabinet.
4. The multi-energy complementary campus intelligent microgrid system of claim 3, further comprising a parallel switch, wherein the power generation modules and the gas generators are interconnected by the parallel switch;
when the power grid fails and the gas generator stops, the parallel switch is disconnected, and the power generation module is switched to an off-grid mode;
when the power grid and/or the gas generator normally operate, the parallel switch is closed, and the power generation module is switched to a grid-connected mode.
5. The multi-energy complementary park intelligent microgrid system of claim 1, wherein the storage battery pack is a lithium battery.
6. The multi-energy complementary park intelligent microgrid system of claim 1, wherein the power generation equipment controller, the energy storage controller and the power distribution controller are all DSP processors.
7. The multi-energy complementary campus intelligent microgrid system of claim 1, wherein said power generation modules employ a PFC plus LLC topology mode to charge said storage battery pack.
8. The multi-energy complementary campus intelligent microgrid system of claim 1, further comprising:
an isolation switch disposed between two cells of the battery pack to isolate the battery pack into two parts; the two separated parts are in independent charge and discharge states.
9. The multi-energy complementary campus intelligent microgrid system of claim 1, wherein said microgrid control center is further provided with a display screen.
10. The multi-energy complementary campus intelligent microgrid system of claim 9, wherein said display screen is a touch screen.
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| CN201821569631.5U CN210867281U (en) | 2018-09-26 | 2018-09-26 | Multifunctional complementary park intelligent micro-grid system |
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| CN201821569631.5U CN210867281U (en) | 2018-09-26 | 2018-09-26 | Multifunctional complementary park intelligent micro-grid system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116025943A (en) * | 2022-11-28 | 2023-04-28 | 中国能源建设集团湖南省电力设计院有限公司 | Zero-carbon heating system of medium-deep geothermal energy coupling light storage system |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116025943A (en) * | 2022-11-28 | 2023-04-28 | 中国能源建设集团湖南省电力设计院有限公司 | Zero-carbon heating system of medium-deep geothermal energy coupling light storage system |
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