CN112787332A - Point type self-generating self-power-utilization mutual feed system - Google Patents
Point type self-generating self-power-utilization mutual feed system Download PDFInfo
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- CN112787332A CN112787332A CN202110238338.0A CN202110238338A CN112787332A CN 112787332 A CN112787332 A CN 112787332A CN 202110238338 A CN202110238338 A CN 202110238338A CN 112787332 A CN112787332 A CN 112787332A
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- energy storage
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- 238000004146 energy storage Methods 0.000 claims abstract description 30
- 238000010248 power generation Methods 0.000 claims abstract description 22
- 230000002269 spontaneous effect Effects 0.000 claims description 9
- 239000002253 acid Substances 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000002028 Biomass Substances 0.000 claims description 2
- 230000003750 conditioning effect Effects 0.000 claims 1
- 230000005611 electricity Effects 0.000 abstract description 7
- 239000013589 supplement Substances 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Classifications
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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
- H02J3/04—Circuit arrangements for ac mains or ac distribution networks for connecting networks of the same frequency but supplied from different sources
- H02J3/06—Controlling transfer of power between connected networks; Controlling sharing of load between connected networks
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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
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
-
- 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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a point-type mutual feed system for self-generation and self-utilization electricity, which comprises a self-generation device, a power grid power supply system and a self-utilization electrical appliance, wherein an electric energy storage device, a central power regulation and control device and an emergency guarantee power generation device are also arranged in a space unit; the generated power is preferentially used by self, the surplus generated power is preferentially stored, and the power supply of the power grid is started when the energy storage device feeds power to a critical value; when the external power grid is disconnected and a feed critical value appears in the self-distribution circuit, the power generation device is started to supply power for emergency guarantee. By adopting the design, self-power generation and self-use can be realized as main components of a self-use power grid, and electricity is taken by a public power grid as supplement, so that the electricity consumption of each space unit basically achieves self-balance, the energy is saved, the environment is protected, and the electricity consumption social cost of the space units is reduced.
Description
Technical Field
The invention relates to power supply and distribution, in particular to a point type spontaneous self-power utilization mutual feed system.
Background
In the prior art, a power consumption unit generally depends on a power grid for power supply, even though a solar or wind energy green power generation device is arranged in the power consumption unit, self-power generation is firstly supplied to the power grid through an inverter, then power is taken from the power grid, and generally no electric energy storage device is arranged. There are problems in that: on one hand, once the power grid is powered off, the building units cannot use power, so that living difficulties are caused, and the power grid in a large area is powered off due to low-temperature heavy snow in the United states in the year, so that the building units are a living example; on the other hand, the electric transmission energy consumption is large, the utilization efficiency of the power generation is low, and the power consumption cost of the power generation unit is high.
Disclosure of Invention
The invention aims to provide a novel point type self-generating power distribution scheme of space units, which constructs a point type self-generating mutual feed system which mainly uses self-generation self-utilization, ensures that adjacent systems supplement each other, a public power grid takes power and self-provided emergency power generation facilities ensure, ensures that the power utilization in a cluster formed by a plurality of independent space units basically achieves self balance, saves energy, protects environment and reduces the social cost of power utilization.
The technical scheme of the invention is as follows: a point type self-generating self-power utilization mutual feed system relates to a self-generating device, a power grid power supply system and an electric appliance in a space unit, a plurality of adjacent space units form a cluster, and an electric energy storage device, a central power regulation and control device and an emergency guarantee power generation device are further arranged in the space units; the self-generating device, the energy storage device, the power utilization appliance and the central power allocation device form a self-distribution power grid, and the self-distribution power grid is also connected with a power supply access end of an external power grid and a self-distribution power grid switch door of other space units in the cluster through the central power adjustment and control device;
the central power regulation and control device can realize that: the generated power of the self-generating device is preferentially supplied to the electric appliances in the unit, and the energy is stored through the energy storage device under the condition that the electric appliances do not use the power or the power is surplus; preferentially receiving the power feed of the self-distribution power grid of other space units in the cluster under the condition that the self-generation stops generating or the generated energy cannot meet the use requirement of the electric appliance; when the self-distribution power grid is in power shortage and the voltage is reduced to a set threshold value, the interference power of the self-distribution power grid of other space units in the cluster is preferentially received, and then the energy storage device is started to feed power; when the energy storage device is also deficient in electricity to a critical value, the external power grid is automatically started to supply power, when self-electricity is interfered to the energy storage critical value, interference electric energy is preferentially allocated to the self-distribution power grids of adjacent space units, and when the adjacent self-distribution power grids in the cluster also reach interference, the interference electric energy is automatically transmitted to the external power grid; when the external power grid is disconnected, and the energy storage device of the self-distribution power grid is in power shortage to a critical value, the emergency guarantee power generation device is started.
The central electric power regulating and controlling device comprises a CPU, an electric signal sensor and a relay.
The CPU is a PLC controller.
The energy storage device is one or a combination of a maintenance-free lead-acid storage battery, a lithium battery and a super capacitor.
Considering that the starting of a large electric appliance can cause large impact on the voltage of a self-distribution power grid, in the energy storage device, a super capacitor is preferably considered to be matched with other energy storage batteries such as a lithium battery or a lead-acid battery, so that the normal operation of the self-use electric appliance can be adapted under the condition that no external power grid supplies power.
The self-generating device is one or combination of solar energy, wind energy, biomass and power generation of fitness facilities.
The emergency guarantee power generation device is a diesel engine generator set or a gas generator set.
The electric signal sensor comprises a current threshold inductor and a voltage threshold inductor. The current threshold value sensor is matched with the voltage sensor, so that the insufficient voltage condition of the storage battery can be sensed more quickly.
By adopting the technology, self-power generation and self-use in a cluster formed by a plurality of space units can be realized to mainly form a self-power grid, and electricity is taken as supplement by a public power grid, so that the power consumption of the space units basically achieves self-balance, the energy is saved, the environment is protected, and the power consumption social cost is reduced.
Fig. 1 is a schematic diagram of a point type spontaneous self-powered mutual feeding system of the invention.
Detailed Description
A point type self-generating self-power utilization mutual feed system comprises a self-generating device, a power grid power supply system and an electric appliance in a space unit, a plurality of adjacent space units form a cluster, and an electric energy storage device, a central power regulation and control device and an emergency guarantee power generation device are further arranged in the space units; the self-generating device, the energy storage device, the electric appliance and the central power allocation device form a self-distribution power grid, and the self-distribution power grid is also connected with a power supply access end of an external power grid and a self-distribution power grid switch door of other space units in the cluster through the central power adjustment and control device;
the central power regulation and control device can realize that: the generated power of the self-generating device is preferentially supplied to the electric appliances in the unit, and the energy is stored through the energy storage device under the condition that the electric appliances do not use the power or the power is surplus; preferentially receiving the power feed of the self-distribution power grid of other space units in the cluster under the condition that the self-generation stops generating or the generated energy cannot meet the use requirement of the electric appliance; when the self-distribution power grid is in power shortage and the voltage is reduced to a set threshold value, the interference power of the self-distribution power grid of other space units in the cluster is preferentially received, and then the energy storage device is started to feed power; when the electricity of the energy storage device is insufficient to a critical value, the external power grid is automatically started to supply power, when self-power generation is interfered to the energy storage critical value, interference electric energy is preferentially allocated to the self-distribution power grids of adjacent space units, and when the adjacent self-distribution power grids in the cluster also reach interference, the interference electric energy is automatically transmitted to the external power grid; when the external power grid is disconnected, and the energy storage device of the self-distribution power grid is in power shortage to a critical value, the emergency guarantee power generation device is started.
The central power regulating and controlling device comprises a PLC controller. An electrical signal sensor and a relay. The energy storage device is preferably a combination of a maintenance-free lead-acid storage battery and a super capacitor, so that large current can be rapidly provided when the electric appliance is started. The self-generating device comprises a solar energy, wind energy and body-building facility generating device. And a diesel generator set of an emergency guarantee power generation device is arranged in an external discharge space of the building unit.
And a voltage stabilizing device is arranged at the output end of each self-generating device to ensure the voltage provided by the self-generating device to the self-distribution power grid to be stable. An AC/DC inverter is arranged between the energy storage battery and the self-distribution power grid.
The electric signal sensor comprises a current threshold inductor and a voltage threshold inductor.
Claims (8)
1. A point type self-generating self-power-utilization mutual feed system relates to a green energy self-generating device, a power grid power supply system and an electric appliance in a space unit, and a plurality of adjacent space units form a cluster; at least one emergency guarantee power generation device is arranged in one space unit or one cluster; the self-generating device, the energy storage device, the power utilization appliance and the central power allocation device form a self-distribution power grid, and the self-distribution power grid is also connected with a power supply access end of an external power grid and self-distribution power grids of other space units in the cluster through switch doors;
the control logic of the central power regulation and control device is as follows: the generated power of the self-generating device is preferentially supplied to the electric appliances in the unit, and the energy is stored through the energy storage device under the condition that the electric appliances do not use the power or the power is surplus; when the self-distribution power grid is in power shortage and the voltage is reduced to a set threshold value, the self-distribution power grid interference power of other space units in the cluster is preferentially received, then the energy storage device is started to feed power, and when the energy storage device is in power shortage to a critical value, the external power grid is automatically connected for power supply; when self-power generation is interfered to an energy storage critical value, interference electric energy is preferentially allocated to a self-distribution power grid of an adjacent space unit, and when the adjacent self-distribution power grid in the cluster is also interfered, the interference electric energy is automatically transmitted to an external power grid; when the external power grid is disconnected, and the energy storage device of the self-distribution power grid is in power shortage to a critical value, the emergency guarantee power generation device is started.
2. The point-type spontaneous self-powered mutual feed system according to claim 1, wherein said central power conditioning means comprises a CPU, an electrical signal sensor and a relay.
3. The point-type spontaneous self-powered mutual feed system according to claim 2, wherein the CPU is a PLC controller.
4. The point-type spontaneous self-powered mutual feed system according to claim 1, wherein the energy storage device is one or more of a maintenance-free lead-acid battery, a lithium battery and a super capacitor.
5. The point-type spontaneous self-powered mutual feed system according to claim 4, wherein the energy storage device is a combination of a maintenance-free lead-acid battery or a lithium battery and a super capacitor.
6. The point-type spontaneous self-powered mutual feed system according to claim 1, wherein the self-generating device is one or a combination of solar energy, wind energy, biomass, and fitness facility power generation.
7. The point-type spontaneous self-powered mutual feed system according to claim 1, wherein the emergency safeguard power generation device is a diesel generator set or a gas generator set.
8. The point-type spontaneous self-powered mutual feed system according to claim 2, wherein the electrical signal sensor comprises a current threshold sensor and a voltage threshold sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110238338.0A CN112787332A (en) | 2021-03-04 | 2021-03-04 | Point type self-generating self-power-utilization mutual feed system |
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| CN202110238338.0A CN112787332A (en) | 2021-03-04 | 2021-03-04 | Point type self-generating self-power-utilization mutual feed system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114123176A (en) * | 2021-11-16 | 2022-03-01 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Emergency power supply equipment for preventing power supply interruption of power distribution network caused by natural disasters |
| CN116488239A (en) * | 2023-04-20 | 2023-07-25 | 淮阴工学院 | Biomass intelligent energy supply system and method based on big data |
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Application publication date: 20210511 |