CN113991744A - Wisdom energy supply system - Google Patents
Wisdom energy supply system Download PDFInfo
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- CN113991744A CN113991744A CN202111428109.1A CN202111428109A CN113991744A CN 113991744 A CN113991744 A CN 113991744A CN 202111428109 A CN202111428109 A CN 202111428109A CN 113991744 A CN113991744 A CN 113991744A
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- 230000005611 electricity Effects 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims abstract description 7
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 29
- 230000008859 change Effects 0.000 claims description 27
- 238000010248 power generation Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003491 array Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 3
- 230000007812 deficiency Effects 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 24
- 238000009826 distribution Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 3
- 239000000110 cooling liquid Substances 0.000 description 3
- 206010033799 Paralysis Diseases 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a smart energy supply system in the field of smart power grids, which comprises a scheduling unit, a calculating unit, a judging unit, a transition storage unit and an overload protection unit. The distribution process is based on distinguishing the energy supply area of a single base station, the electric energy flows to the core area, the power supply of the manufacturing industry or a commercial street in the core area is guaranteed to be sufficient, a small amount of distribution is carried out in the secondary area, under the premise that basic life electricity utilization is guaranteed to be unchanged, the problem that the electric energy demands of specific nodes in the area are different is solved, meanwhile, accurate scheduling distribution is carried out, and the loss of the electric energy in operation is reduced.
Description
Technical Field
The invention belongs to the field of smart power grids, and particularly relates to a smart energy supply system.
Background
An enterprise power grid generally includes a plurality of substations connected in an interleaved manner, wherein a part of the substations is connected to a local power grid (a power grid for providing electric energy to the enterprise power grid), the part of substations may be referred to as upper-level substations, each upper-level substation is connected to a plurality of lower-level substations (substations not connected to the local power grid), both the upper-level substations and the lower-level substations may be provided with electricity selling ports for providing electric energy to users, and the operation costs (such as power grid loss) of the power grid are different according to different dispatching modes (modes for providing electric energy of the upper-level substations to the users).
When the electric energy is scheduled in the related technology, the electric energy scheduling mode with the minimum electric energy loss of the enterprise power grid is obtained by analyzing and calculating the electric energy loss, and the electric energy is scheduled according to the mode.
In the process of implementing the invention, the inventor finds that the above mode has at least the following defects: the operation mode with the minimum electric energy loss is calculated in the above mode, the electric energy loss is only a part of the operation cost of the power grid, and the scheduling mode with the minimum electric energy loss is not necessarily the scheduling mode with the minimum operation cost of the power grid.
Disclosure of Invention
In order to solve the above problems, the present invention aims to reduce the power consumption by refining the regional power to implement the power scheduling between the core region and the secondary region.
In order to achieve the purpose, the technical scheme of the invention is as follows: an intelligent energy supply system comprises a scheduling unit, a calculating unit, a judging unit, a transition storage unit and an overload protection unit;
the scheduling unit is used for receiving electric energy forecast of each transition storage unit, the electric energy forecast information comprises power failure information, energy vacancy information and energy deficiency information, and the scheduling unit performs proportional allocation on energy according to the ratio of the calculating unit after judging the information by the calculating unit;
the calculating unit is used for counting the proportion of the electric energy forecasting information and the threshold value, so as to instruct the scheduling unit to distribute the whole electric energy according to the original base number proportion of the base station;
the judging unit judges the size of a scheduled power supply and the size of the bearing capacity of each base station according to the bearing capacity of each base station so as to limit the flow of scheduled energy, and then the judging unit distinguishes a core area and a secondary area according to the electricity consumption of the areas in each base station so as to control the flow direction of the electric energy of the base stations;
the overload protection unit is used for protecting the line load of the base station
Further, the overload protection unit comprises a main circuit and a standby circuit, wherein a hydraulic selection switch is arranged between the main circuit and the standby circuit, and the hydraulic selection switch is used for selecting the main circuit and the standby circuit according to circuit loads.
Furthermore, the hydraulic selection switch comprises a temperature motor which rotates after the temperature rises, the temperature motor is also provided with a cooling system, the hydraulic selection switch further comprises a change rod, a cooling tank and a fan blade driven by the temperature motor, the cooling tank is connected into the cooling system of the temperature motor, one end of the change rod is in clearance fit with the cooling tank, the other end of the change rod extends out of the cooling tank, one end of the change rod extending out of the cooling tank is connected with a swing rod, the swing rod is driven by the fan blade, the surface of the fan blade is provided with oppositely arranged convex columns, the swing rod is positioned between the convex columns, and the movement stroke of the swing rod is in contact with a main circuit and a standby circuit.
Furthermore, a ball head is connected between the change rod and the swing rod.
Furthermore, one end of the change rod, which is positioned in the cooling tank, is provided with a rubber sealing gasket, a tension spring is connected between the rubber sealing gasket and the top of the cooling tank, and the rubber sealing gasket and the bottom of the cooling tank are provided with cooling liquid.
Furthermore, the change rod is located the lowest position under the extension spring is in the natural state.
Furthermore, the scheduling unit comprises an equal emergency scheduling unit, a balanced scheduling unit and a power failure pre-scheduling unit;
the emergency scheduling unit is used for receiving base station monitoring and warning information of the iron tower operation and maintenance monitoring system, analyzing the base station monitoring and warning information according to a preset analysis rule to determine a base station needing power generation on the station, and performing energy emergency scheduling on the base station needing power generation on the station;
the balance scheduling unit is used for receiving the current latest state information of each base station, analyzing the current latest state information of each base station to determine the base station with insufficient energy package configuration, and performing balance scheduling on the energy package for the base station with insufficient energy package configuration;
the power failure pre-dispatching unit is used for receiving power failure forecast information, determining a base station to be powered off according to the power failure forecast information, and pre-dispatching the energy of the base station to be powered off according to the energy endurance condition of the base station to be powered off.
The photovoltaic power grid comprises two photovoltaic arrays, a voltage regulating device and grid-connected interface circuits, the photovoltaic arrays are connected with the voltage regulating device, the voltage regulating device is connected with the tail end of a first medium-voltage feeder line through a first grid-connected interface circuit, and the voltage regulating device is connected with the tail end of a second medium-voltage feeder line through a second grid-connected interface circuit;
the first parallel interface circuit comprises three phases, each phase comprising n cascaded H-bridge inverters; the second grid-connected interface circuit comprises three phases, and each phase comprises n cascaded H-bridge inverters; n is more than or equal to 2.
Furthermore, the photovoltaic array comprises three phases, each phase comprises n photovoltaic string groups, the voltage regulating device comprises three phases, each phase comprises n DC/DC converters, each photovoltaic string group, one DC/DC converter, an H-bridge inverter of a first grid-connected interface circuit and an H-bridge inverter of a second grid-connected interface circuit form a photovoltaic grid-connected module, two H-bridge inverters of one photovoltaic grid-connected module share a direct current bus, the output end of each photovoltaic string group is connected with the input end of the DC/DC converter, and the output end of the DC/DC converter is connected with the direct current bus;
the first grid-connected interface circuit controls active power output to the first medium-voltage feeder line, and the second grid-connected interface circuit controls voltage of each direct-current bus;
the first parallel interface circuit controls the active power output to the first medium voltage feeder.
After the scheme is adopted, the following beneficial effects are realized: 1. according to the technical scheme, the scheduling unit is combined with electric energy forecasting, so that the electric power demand condition of each base station is analyzed and judged, and then intelligent distribution is carried out.
2. The distribution process is based on distinguishing the energy supply area of a single base station, the electric energy flows to the core area, the power supply of the manufacturing industry or a commercial street in the core area is guaranteed to be sufficient, a small amount of distribution is carried out in the secondary area, under the premise that basic life electricity utilization is guaranteed to be unchanged, the problem that the electric energy demands of specific nodes in the area are different is solved, meanwhile, accurate scheduling distribution is carried out, and the loss of the electric energy in operation is reduced.
3. Because total electric energy is limited, consequently carry out proportion distribution in the distribution process, calculation module carries out overall planning to emergency area, power failure area and balanced dispatch area this moment to the electric energy of total power station is the basis, distributes the electric energy according to the proportion, in order to avoid circuit node paralyses, is alleviating the rational utilization of in-process realization electric energy, also can monitor the region of increaseing the power consumption suddenly simultaneously.
4. Utilize overload protection unit to protect the electric energy among this technical scheme, the protection process is as follows, and the circuit is whole to generate heat when circuit load is too high, and consequently the temperature motor is rotatory after being heated, and the temperature motor in the rotation process drives the fan piece rotation this moment, and the rotation process drives the swinging arms through the projection and contacts stand-by circuit from the main circuit (or contact in the main circuit from stand-by circuit), realizes the change of gear.
5. Because the fan blade moves from the lowest position to the highest position and then to the lowest position of the arc in the gear change process, the change rod generates reciprocating telescopic motion at the moment, the reciprocating telescopic motion is convenient for sucking back and releasing the cooling liquid, the exchange of the cooling liquid is realized, and sudden tripping is avoided after the circuit is contacted again.
6. On the basis of the structure of a photovoltaic power generation system based on a modular multilevel converter, the novel photovoltaic power generation system with two grid-connected interfaces is provided, the photovoltaic power generation system has an SOP function on the premise that the cost is not increased much, the SOP is brought into play, the flexibility of operation and scheduling of a power distribution network is improved remarkably, the economical efficiency and the reliability of operation of the power system are improved greatly, the flexibility of power flow of the photovoltaic power generation system is improved, and the capacity of the power distribution network for accepting distributed photovoltaic is improved.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a power distribution network including an SOP device according to a second embodiment;
fig. 3 is a schematic view of the overall structure of the photovoltaic power generation system according to the second embodiment.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: change pole 1, cooling tank 2, fan piece 3, swinging arms 4, bulb 5, rubber seal 6, extension spring 7, projection 8.
Example one
The embodiment is basically as shown in the attached figure 1: an intelligent energy supply system comprises a scheduling unit, a calculating unit, a judging unit, a transition storage unit and an overload protection unit;
the dispatching unit comprises an equal emergency dispatching unit, a balanced dispatching unit and a power failure pre-dispatching unit;
the emergency scheduling unit is used for receiving base station monitoring and warning information of the iron tower operation and maintenance monitoring system, analyzing the base station monitoring and warning information according to a preset analysis rule to determine a base station needing power generation on the station, and performing energy emergency scheduling on the base station needing power generation on the station;
the balance scheduling unit is used for receiving the current latest state information of each base station, analyzing the current latest state information of each base station to determine the base station with insufficient energy package configuration, and performing balance scheduling on the energy packages for the base station with insufficient energy package configuration;
the power failure pre-dispatching unit is used for receiving power failure forecast information, determining a base station to be powered off according to the power failure forecast information, and pre-dispatching the energy of the base station to be powered off according to the energy endurance condition of the base station to be powered off.
The scheduling unit is used for receiving electric energy forecast of each transition storage unit, the electric energy forecast information comprises power failure information, energy vacancy information and energy deficiency information, and the scheduling unit performs proportional distribution on energy according to the ratio of the calculating unit after judging the information by the calculating unit;
the calculating unit is used for counting the proportion of the electric energy forecasting information and the threshold value, so as to instruct the scheduling unit to distribute the whole electric energy according to the original base number proportion of the base station;
the judging unit judges the size of a scheduled power supply and the size of the bearing capacity of each base station according to the bearing capacity of each base station so as to limit the flow of scheduled energy, and then the judging unit distinguishes a core area and a secondary area according to the electricity consumption of the areas in each base station and controls the flow direction of the electric energy of the base stations;
the overload protection unit is used for protecting the line load of the base station and comprises a main circuit and a standby circuit, wherein a hydraulic selection switch is arranged between the main circuit and the standby circuit and used for selecting the main circuit and the standby circuit according to the circuit load.
The hydraulic selection switch comprises a temperature motor which rotates after the temperature rises, the temperature motor is further provided with a cooling system, the hydraulic selection switch further comprises a change rod 1, a cooling tank 2 and a fan blade 3 driven by the temperature motor, the cooling tank 2 is connected into the cooling system of the temperature motor, one end of the change rod 1 is in clearance fit with the cooling tank 2, the other end of the change rod 1 extends out of the cooling tank 2, one end of the change rod 1 extending out of the cooling tank 2 is connected with a swing rod 4, the swing rod 4 is driven by the fan blade 3, the surface of the fan blade 3 is provided with oppositely arranged convex columns 8, the swing rod 4 is positioned between the convex columns 8, the movement stroke of the swing rod 4 is in contact with a main circuit and a standby circuit, and a ball head 5 is connected between the change rod 1 and the swing rod 4.
One end of the change rod 1, which is positioned in the cooling tank 2, is provided with a rubber sealing gasket 6, a tension spring 7 is connected between the rubber sealing gasket 6 and the top of the cooling tank 2, and the change rod 1 is positioned at the lowest position when the tension spring 7 is in a natural state.
The specific implementation process is as follows: according to the technical scheme, the scheduling unit is combined with electric energy forecasting, so that the electric power demand condition of each base station is analyzed and judged, and then intelligent distribution is carried out.
In the distribution process, based on the energy supply area of a single base station, the electric energy flows to the core area to ensure that the power supply of the area such as a manufacturing industry or a commercial street is sufficient, and the small amount of distribution is performed in the secondary area, so that the condition of different electric energy requirements of specific nodes in the area is solved under the condition of ensuring the electricity consumption of basic life.
Because total electric energy is limited, consequently carry out proportion distribution in the distribution process, calculation module carries out overall planning to emergency area, power failure area and balanced dispatch area this moment to the electric energy of total power station is the basis, distributes the electric energy according to the proportion, in order to avoid circuit node paralyses, is alleviating the rational utilization of in-process realization electric energy, also can monitor the region of increaseing the power consumption suddenly simultaneously.
Utilize overload protection unit to protect the electric energy among this technical scheme, the protection process is as follows, and the circuit is whole to generate heat when circuit load is too high, and consequently the temperature motor is rotatory after being heated, and the temperature motor in the rotation process drives fan 3 rotatory this moment, and rotation process drives swinging arms 4 through projection 8 and contacts spare circuit from the main circuit (or contact in the main circuit from spare circuit), realizes the change of gear.
Because the gear changes in-process fan piece 3 and moves to the highest place from curved minimum again to minimum, change pole 1 and produce reciprocal concertina movement this moment, reciprocal rising and contracting movement is convenient for inhale back and release the coolant liquid, has realized the exchange of coolant liquid, avoids tripping suddenly after touching the circuit again.
Example two
Referring to fig. 2 and fig. 3, the present embodiment is different from the above embodiments in that the present embodiment further includes a photovoltaic grid, where the photovoltaic grid includes two photovoltaic arrays, a voltage regulator, and a grid-connected interface circuit, the two grid-connected interface circuits are connected to the voltage regulator, the voltage regulator is connected to a first medium-voltage feeder terminal through a first grid-connected interface circuit, and the voltage regulator is connected to a second medium-voltage feeder terminal through a second grid-connected interface circuit;
the first parallel interface circuit comprises three phases, each phase comprising n cascaded H-bridge inverters; the second grid-connected interface circuit comprises three phases, and each phase comprises n cascaded H-bridge inverters; n is more than or equal to 2;
the photovoltaic array comprises three phases, each phase comprises n photovoltaic string groups, the voltage regulating device comprises three phases, each phase comprises n DC/DC converters, each photovoltaic string group, one DC/DC converter, an H-bridge inverter of a first grid-connected interface circuit and an H-bridge inverter of a second grid-connected interface circuit form a photovoltaic grid-connected module, two H-bridge inverters of one photovoltaic grid-connected module share a direct current bus, the output end of each photovoltaic string group is connected with the input end of the DC/DC converter, and the output end of the DC/DC converter is connected with the direct current bus;
the first grid-connected interface circuit controls active power output to the first medium-voltage feeder line, and the second grid-connected interface circuit controls voltage of each direct-current bus; the first parallel interface circuit controls the active power output to the first medium voltage feeder.
The specific implementation process is as follows: on the basis of the structure of a photovoltaic power generation system based on a modular multilevel converter, the novel photovoltaic power generation system with two grid-connected interfaces is provided, the photovoltaic power generation system has an SOP function on the premise that the cost is not increased much, the SOP is brought into play, the flexibility of operation and scheduling of a power distribution network is improved remarkably, the economical efficiency and the reliability of operation of the power system are improved greatly, the flexibility of power flow of the photovoltaic power generation system is improved, and the capacity of the power distribution network for accepting distributed photovoltaic is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. An intelligent energy supply system is characterized in that: the system comprises a scheduling unit, a calculating unit, a judging unit, a transition storage unit and an overload protection unit;
the scheduling unit is used for receiving electric energy forecast of each transition storage unit, the electric energy forecast information comprises power failure information, energy vacancy information and energy deficiency information, and the scheduling unit performs proportional allocation on energy according to the ratio of the calculating unit after judging the information by the calculating unit;
the calculating unit is used for counting the proportion of the electric energy forecasting information and the threshold value, so as to instruct the scheduling unit to distribute the whole electric energy according to the original base number proportion of the base station;
the judging unit judges the size of a scheduled power supply and the size of the bearing capacity of each base station according to the bearing capacity of each base station so as to limit the flow of scheduled energy, and then the judging unit distinguishes a core area and a secondary area according to the electricity consumption of the areas in each base station so as to control the flow direction of the electric energy of the base stations;
the overload protection unit is used for protecting the line load of the base station.
2. The intelligent energy supply system according to claim 1, wherein: the overload protection unit comprises a main circuit and a standby circuit, wherein a hydraulic selection switch is arranged between the main circuit and the standby circuit and used for selecting the main circuit and the standby circuit according to circuit loads.
3. The intelligent energy supply system according to claim 2, wherein: the hydraulic selection switch comprises a temperature motor which rotates after the temperature rises, the temperature motor is also provided with a cooling system, the hydraulic selection switch further comprises a change rod, a cooling tank and a fan blade driven by the temperature motor, the cooling tank is connected into the cooling system of the temperature motor, one end of the change rod is in clearance fit with the cooling tank, the other end of the change rod extends out of the cooling tank, one end of the change rod extending out of the cooling tank is connected with a swing rod, the swing rod is driven by the fan blade, the surfaces of the fan blade are provided with opposite convex columns, the swing rod is positioned between the convex columns, and the movement stroke of the swing rod is in contact with a main circuit and a standby circuit.
4. The intelligent energy supply system according to claim 3, wherein: a ball head is connected between the change rod and the swing rod.
5. The intelligent energy supply system according to claim 4, wherein: one end of the change rod, which is positioned in the cooling tank, is provided with a rubber sealing gasket, and a tension spring is connected between the rubber sealing gasket and the top of the cooling tank.
6. The intelligent energy supply system according to claim 5, wherein: the change rod is located the lowest position under the extension spring is in natural state.
7. The intelligent energy supply system according to claim 6, wherein: the scheduling unit comprises an equal emergency scheduling unit, a balanced scheduling unit and a power failure pre-scheduling unit;
the emergency scheduling unit is used for receiving base station monitoring and warning information of the iron tower operation and maintenance monitoring system, analyzing the base station monitoring and warning information according to a preset analysis rule to determine a base station needing power generation on the station, and performing energy emergency scheduling on the base station needing power generation on the station;
the balance scheduling unit is used for receiving the current latest state information of each base station, analyzing the current latest state information of each base station to determine the base station with insufficient energy package configuration, and performing balance scheduling on the energy package for the base station with insufficient energy package configuration;
the power failure pre-dispatching unit is used for receiving power failure forecast information, determining a base station to be powered off according to the power failure forecast information, and pre-dispatching the energy of the base station to be powered off according to the energy endurance condition of the base station to be powered off.
8. The intelligent energy supply system according to claim 6, wherein: the photovoltaic power grid comprises two photovoltaic arrays, a voltage regulating device and a grid-connected interface circuit, wherein the photovoltaic arrays are connected with the voltage regulating device, the voltage regulating device is connected with the tail end of a first medium-voltage feeder line through a first grid-connected interface circuit, and the voltage regulating device is connected with the tail end of a second medium-voltage feeder line through a second grid-connected interface circuit;
the first parallel interface circuit comprises three phases, each phase comprising n cascaded H-bridge inverters; the second grid-connected interface circuit comprises three phases, and each phase comprises n cascaded H-bridge inverters; n is more than or equal to 2.
9. The system according to claim 8, wherein: the photovoltaic array comprises three phases, each phase comprises n photovoltaic string groups, the voltage regulating device comprises three phases, each phase comprises n DC/DC converters, each photovoltaic string group, one DC/DC converter, an H-bridge inverter of a first grid-connected interface circuit and an H-bridge inverter of a second grid-connected interface circuit form a photovoltaic grid-connected module, two H-bridge inverters of one photovoltaic grid-connected module share a direct current bus, the output end of each photovoltaic string group is connected with the input end of the DC/DC converter, and the output end of the DC/DC converter is connected with the direct current bus;
the first grid-connected interface circuit controls active power output to the first medium-voltage feeder line, and the second grid-connected interface circuit controls voltage of each direct-current bus;
the first parallel interface circuit controls the active power output to the first medium voltage feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111428109.1A CN113991744B (en) | 2021-11-29 | 2021-11-29 | Intelligent energy supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111428109.1A CN113991744B (en) | 2021-11-29 | 2021-11-29 | Intelligent energy supply system |
Publications (2)
| Publication Number | Publication Date |
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| CN113991744A true CN113991744A (en) | 2022-01-28 |
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