CN113765143A - Electric arc furnace power supply control method - Google Patents
Electric arc furnace power supply control method Download PDFInfo
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- CN113765143A CN113765143A CN202111109403.6A CN202111109403A CN113765143A CN 113765143 A CN113765143 A CN 113765143A CN 202111109403 A CN202111109403 A CN 202111109403A CN 113765143 A CN113765143 A CN 113765143A
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- module
- arc furnace
- electric arc
- power supply
- energy storage
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- 238000010891 electric arc Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000010248 power generation Methods 0.000 claims abstract description 53
- 238000004146 energy storage Methods 0.000 claims abstract description 48
- 239000003990 capacitor Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Images
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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
-
- 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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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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
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/20—Climate change mitigation technologies for sector-wide applications using renewable energy
Abstract
The invention provides a power supply control method for an electric arc furnace, which comprises the following steps: providing an electric arc furnace power supply control system, the electric arc furnace power supply control system comprising: photovoltaic power generation module, energy storage module, power module and electric arc furnace module, preferentially use photovoltaic power generation module is right the electric arc furnace module supplies power. According to the technical scheme provided by the invention, the photovoltaic power generation module, the energy storage module and the power supply module are coupled and complemented to supply power to the electric arc furnace module, so that the photovoltaic power generation can be consumed on site, the problem that photovoltaic power generation energy is abandoned due to market consumption, peak regulation and frequency modulation, high electric power transmission cost and the like can be effectively solved, the utilization rate of solar photovoltaic power generation is greatly improved, meanwhile, the power supply reliability of the electric arc furnace module is improved, and the power utilization cost of production enterprises is reduced.
Description
Technical Field
The invention relates to the field of power control, in particular to a power supply control method for an electric arc furnace.
Background
The electric arc furnace is used as common equipment in metallurgical industry and has the characteristic of large energy consumption. At present, the power consumption requirement of an electric arc furnace is mainly met through a mains supply, and along with the increasing energy-saving and environment-friendly requirements, the power consumption requirement of the electric arc furnace needs to be met through alternative energy sources. Photovoltaic power generation has the characteristic of no pollution emission, and is more and more suitable for the adjustment requirement of an energy structure. However, photovoltaic power generation is easily affected by sunshine conditions, has certain instability, and enlarges the installed capacity of photovoltaic power generation, thus easily causing the problem that photovoltaic power generation cannot be well absorbed.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention provides an arc furnace power supply control method for solving the problem of meeting the power demand of an arc furnace by alternative energy sources in the prior art.
To achieve the above and other related objects, the present invention provides a power supply control method for an arc furnace, comprising:
providing an electric arc furnace power supply control system, the electric arc furnace power supply control system comprising: the photovoltaic power generation module comprises a plurality of photovoltaic power generation units and a bus bar, and the output ends of the photovoltaic power generation units are connected with the input end of the bus bar; the output end of the bus bar is connected with the input end of the energy storage module; a power supply module; the electric arc furnace module comprises a direct current bus, and the output end of the bus bar, the output end of the energy storage module and the output end of the power supply module are connected with the input end of the direct current bus;
preferentially using the photovoltaic power generation module to supply power to the electric arc furnace module.
Optionally, the method includes: and judging whether the voltage of the bus bar meets the power supply requirement of the direct current bus, if so, supplying power to the electric arc furnace module by the photovoltaic power generation module, inputting redundant energy into the energy storage module, and storing energy by the energy storage module.
Optionally, when the voltage of the bus bar does not satisfy the power supply requirement of the dc bus, it is determined whether the energy storage module satisfies the power supply requirement of the dc bus, if so, the energy storage module supplies power to the arc furnace module, otherwise, the power supply module supplies power to the arc furnace, the photovoltaic power generation module supplies power to the energy storage module, and the energy storage module stores energy.
Optionally, when the electric arc furnace stops, the photovoltaic power generation module supplies power to the energy storage module, and the energy storage module stores energy.
Optionally, the energy storage module includes a converter and a super capacitor, an input end of the converter is connected to an output end of the bus bar, and an output end of the converter is connected to an input end of the super capacitor;
the energy storage module further comprises a charger, a battery system and a 2# switch, wherein the input end of the charger is connected with the output end of the bus bar, the output end of the charger is connected with the input end of the battery system, the output end of the battery system is connected with the input end of the 2# switch, and the output end of the 2# switch is connected with the input end of the direct current bus bar;
the process of the energy storage module for storing energy comprises the following steps:
the battery system is charged preferentially via the charger and the supercapacitor is charged with stored energy using the converter.
As described above, the electric arc furnace power supply control method of the present invention has the following beneficial effects:
according to the technical scheme provided by the invention, the photovoltaic power generation module, the energy storage module and the power supply module are coupled and complemented to supply power to the electric arc furnace module, so that the photovoltaic power generation can be consumed on site, the problem that photovoltaic power generation energy is abandoned due to market consumption, peak regulation and frequency modulation, high electric power transmission cost and the like can be effectively solved, the utilization rate of solar photovoltaic power generation is greatly improved, meanwhile, the power supply reliability of the electric arc furnace module is improved, and the power utilization cost of production enterprises is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an arc furnace power supply control system according to an embodiment of the present invention.
Fig. 2 is a flow chart illustrating a power supply control method for an arc furnace according to an embodiment of the present invention.
Description of reference numerals
1 photovoltaic power generation module
11 photovoltaic power generation unit
12 bus bar
2 energy storage module
3 Power supply module
4 electric arc furnace module
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Please refer to fig. 1-2. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated. The structures, proportions, sizes, and other dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the art, and any structural modifications, changes in proportions, or adjustments in size, which do not affect the efficacy and attainment of the same are intended to fall within the scope of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Referring to fig. 1, the present invention provides a power supply control system for an arc furnace, including:
the photovoltaic power generation system comprises a photovoltaic power generation module 1, wherein the photovoltaic power generation module 1 comprises a plurality of photovoltaic power generation units 11 and a bus bar 12, and the output ends of the photovoltaic power generation units 11 are connected with the input end of the bus bar 12;
the output end of the bus bar 12 is connected with the input end of the energy storage module 2;
a power supply module 3;
the electric arc furnace module 4, the electric arc furnace module 4 includes the direct current bus, the output of bus bar 12, the output of energy storage module 2 and the output of power module 3 with the input of direct current bus is connected. Supply power for electric arc furnace module 4 jointly through photovoltaic power generation module 1 and power module 3, and preferentially use photovoltaic power generation module 1 to supply power, improve the energy structure of electric arc furnace module 4 power consumption, the problem of the unable good settlement of handing over of the energy of solving photovoltaic power generation production, whether can match with direct current bus through judging the busbar that converges, select photovoltaic power generation module 1 and power module 3's power supply mode, under the prerequisite that does not influence electric arc furnace module 4 work, realize great degree photovoltaic power generation and disappear, reduce electric arc furnace module 4's use cost.
In some embodiments, the energy storage module 2 comprises a converter and a super capacitor, wherein an input end of the converter is connected with an output end of the bus bar 12, and an output end of the converter is connected with an input end of the super capacitor. For example, the converter can be set to be bidirectional DC/DC, the super capacitor can realize temporary storage of electric energy, and can quickly realize absorption and release of energy of the photovoltaic power generation module 1.
In some embodiments, the energy storage module 2 further includes a charger, a battery system, and a # 2 switch, an input of the charger is connected to the output of the bus bar 12, an output of the charger is connected to the input of the battery system, an output of the battery system is connected to the input of the # 2 switch, and an output of the # 2 switch is connected to the input of the dc bus bar. The battery system can be set to have a large installed capacity and can absorb surplus energy generated by the photovoltaic power generation module 1.
In some embodiments, the photovoltaic power generation module 1 further includes a # 1 switch, an input terminal of the # 1 switch is connected to the output terminal of the bus bar 12, and an output terminal of the # 1 switch is connected to the input terminal of the dc bus bar.
In some embodiments, the power supply module 3 further includes a # 3 switch, and an output terminal of the # 3 switch is connected to an input terminal of the dc bus.
The power supply requirements of the photovoltaic power generation module 1, the energy storage module 2 and the power supply module 3 for the electric arc furnace module are met by controlling the switch 1# and the switch 2# and the switch 3# respectively.
Referring to fig. 2, the present invention provides a method for controlling power supply of an arc furnace, including:
providing an electric arc furnace power supply control system, the electric arc furnace power supply control system comprising: the photovoltaic power generation system comprises a photovoltaic power generation module 1, wherein the photovoltaic power generation module 1 comprises a plurality of photovoltaic power generation units 11 and a bus bar 12, and the output ends of the photovoltaic power generation units 11 are connected with the input end of the bus bar 12; the output end of the bus bar 12 is connected with the input end of the energy storage module 2; a power supply module 3; the electric arc furnace module 4 comprises a direct current bus, and the output end of the bus bar 12, the output end of the energy storage module 2 and the output end of the power supply module 3 are connected with the input end of the direct current bus;
the photovoltaic power generation module 1 is preferentially used for supplying power to the electric arc furnace module 4.
In some embodiments, an electric arc furnace power supply control method comprises: and judging whether the voltage of the bus bar 12 meets the power supply requirement of the direct current bus, if so, supplying power to the electric arc furnace module 4 by the photovoltaic power generation module 1, inputting redundant energy into the energy storage module 2, and storing energy by the energy storage module 2.
In some embodiments, when the voltage of the bus bar 12 does not satisfy the power supply requirement of the dc bus, it is determined whether the energy storage module 2 satisfies the power supply requirement of the dc bus, if so, the energy storage module 2 supplies power to the arc furnace module 4, and if not, the power supply module 3 supplies power to the arc furnace, the photovoltaic power generation module 1 supplies power to the energy storage module 2, and the energy storage module 2 stores energy.
In some embodiments, when the arc furnace is stopped, the photovoltaic power generation module 1 supplies power to the energy storage module 2, and the energy storage module 2 stores energy.
In some embodiments, the energy storage module 2 comprises a converter and a super capacitor, an input end of the converter is connected with an output end of the bus bar 12, and an output end of the converter is connected with an input end of the super capacitor;
the energy storage module 2 further comprises a charger, a battery system and a 2# switch, wherein the input end of the charger is connected with the output end of the bus bar 12, the output end of the charger is connected with the input end of the battery system, the output end of the battery system is connected with the input end of the 2# switch, and the output end of the 2# switch is connected with the input end of the direct current bus bar;
the process of the energy storage module 2 for storing energy comprises the following steps:
the battery system is charged preferentially via the charger and the supercapacitor is charged with stored energy using the converter.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. An electric arc furnace power supply control method, characterized by comprising:
providing an electric arc furnace power supply control system, the electric arc furnace power supply control system comprising: the photovoltaic power generation module comprises a plurality of photovoltaic power generation units and a bus bar, and the output ends of the photovoltaic power generation units are connected with the input end of the bus bar; the output end of the bus bar is connected with the input end of the energy storage module; a power supply module; the electric arc furnace module comprises a direct current bus, and the output end of the bus bar, the output end of the energy storage module and the output end of the power supply module are connected with the input end of the direct current bus;
preferentially using the photovoltaic power generation module to supply power to the electric arc furnace module.
2. The electric arc furnace power supply control method of claim 1, comprising: and judging whether the voltage of the bus bar meets the power supply requirement of the direct current bus, if so, supplying power to the electric arc furnace module by the photovoltaic power generation module, inputting redundant energy into the energy storage module, and storing energy by the energy storage module.
3. The electric arc furnace power supply control method according to claim 2, wherein if the voltage of the bus bar does not meet the power supply requirement of the dc bus bar, it is determined whether the energy storage module meets the power supply requirement of the dc bus bar, if so, the energy storage module supplies power to the electric arc furnace module, if not, the power supply module supplies power to the electric arc furnace, the photovoltaic power generation module supplies power to the energy storage module, and the energy storage module stores energy.
4. The electric arc furnace power supply control method according to claim 1, wherein when the electric arc furnace is stopped, the photovoltaic power generation module supplies power to the energy storage module, and the energy storage module stores energy.
5. The electric arc furnace power supply control method as claimed in any one of claims 2 to 4, wherein the energy storage module comprises a converter and a super capacitor, wherein an input end of the converter is connected with an output end of the bus bar, and an output end of the converter is connected with an input end of the super capacitor;
the energy storage module further comprises a charger, a battery system and a 2# switch, wherein the input end of the charger is connected with the output end of the bus bar, the output end of the charger is connected with the input end of the battery system, the output end of the battery system is connected with the input end of the 2# switch, and the output end of the 2# switch is connected with the input end of the direct current bus bar;
the process of the energy storage module for storing energy comprises the following steps:
the battery system is charged preferentially via the charger and the supercapacitor is charged with stored energy using the converter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111109403.6A CN113765143A (en) | 2021-09-22 | 2021-09-22 | Electric arc furnace power supply control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111109403.6A CN113765143A (en) | 2021-09-22 | 2021-09-22 | Electric arc furnace power supply control method |
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| CN113765143A true CN113765143A (en) | 2021-12-07 |
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| WO2020216016A1 (en) * | 2019-04-24 | 2020-10-29 | 深圳英飞源技术有限公司 | Energy storage charging system |
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2021
- 2021-09-22 CN CN202111109403.6A patent/CN113765143A/en active Pending
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