CN103427424B - Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system - Google Patents
Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system Download PDFInfo
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- CN103427424B CN103427424B CN201310312695.2A CN201310312695A CN103427424B CN 103427424 B CN103427424 B CN 103427424B CN 201310312695 A CN201310312695 A CN 201310312695A CN 103427424 B CN103427424 B CN 103427424B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
- C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
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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
- H02J3/38—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
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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
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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
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/10—The network having a local or delimited stationary reach
- H02J2310/12—The local stationary network supplying a household or a building
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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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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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
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Wind Motors (AREA)
Abstract
The invention relates to a power control method of a non-grid multi-energy collaborative power supply electrolytic aluminum system. The electrolytic aluminum system comprises an electrolytic aluminum device, a wind power generation device and a solar power generation device, wherein the wind power generation device and the solar power generation device supply power to the electrolytic aluminum device in a non-grid mode, and waste heat emitted by the electrolytic aluminum device is recycled to generate power to be supplied to an aluminum electrolysis tank. In daytime, electricity quantity supplied to the aluminum electrolysis tank by the utility grid is the lowest electricity quantity required by heat preservation operation, and electricity quantity generated by the wind power generation device and the solar power generation device serves as supplementary. At night, limit on electricity quantity supply to the aluminum electrolysis tank by the utility grid is concealed. The method can adapt to fluctuation of wind power and solar power generation, fully utilize the peak valley price difference of the utility grid to promote economic efficiency in enterprises, assist the utility grid to achieve peak shaving, and reduce peak shaving difficulties caused by large difference between peak load and valley load.
Description
Technical field
The present invention relates to the electrical control method that a kind of non-grid-connected multiple-energy-source works in coordination with the Electrolytic Aluminum System of power supply, belong to Electrolytic Aluminum System technical field.
Background technology
Since reform and opening-up, Chinese national economy grows continuously and fast, and economic total volume constantly reaches a new high.Along with rapid development of economy, the electricity needs of China also increases rapidly.Within 2012, China's Analyzing Total Electricity Consumption reaches 49,591 hundred million kilowatt hours, increases by 5.5% on a year-on-year basis.From 1980 to 2012, China's Analyzing Total Electricity Consumption increased by 16.8 times, increases by 9.2% every year.
Coal is the main body energy of China, accounts for about 70% of primary energy total quantity consumed.Within 2012, China's coal Denso machine scale has reached 7.58 hundred million kilowatts, accounts for 66.2% of total installed capacity; Coal electricity energy output 3.68 trillion kilowatt hour, accounts for 73.9% of gross generation.The coal resources natural endowment of China's abundant determines China and will keep in long period section based on the power supply architecture of coal electricity.
Coal electricity is that main power supply architecture can not degree of depth peak regulation, and therefore to there is power distribution unreasonable for China's large regional grid, causes power supply architecture (base, waist, peak load power supply) property contradiction, i.e. electrical network famine peaking power source.China forces overcritical and ultra supercritical 600,000-100 ten thousand kilowatts of unconventional peak regulations of unit always for many years, is pressed onto 50% subcritical operation, low-carbon (LC) unit high-carbon is run during low ebb.Along with urbanization, industrialization, the power load that electrical network increases every year, its peak-valley difference will more than 50%.
Therefore the development of following China coal electricity must walk the sustainable development path of environmental protection.The developing ability of coal electricity mainly considers climate change, environmental protection, three the factor impacts of coal production capacity.Wind energy is clean as one, free of contamination regenerative resource, and its development and utilization is considered to the important component part of world energy sources strategy.The application mode of large-scale wind power field is mainly based on wind-electricity integration in the world at present, and the utilization of wind energy is mainly carried out according to the route of " wind wheel-generator-electrical network-user (load) ", and wherein electrical network is the load of wind-powered electricity generation and the power supply of user.But due to unsteadiness and the wave characteristic of wind-powered electricity generation, large-scale wind power online also also exists the technology barrier that present stage is difficult to overcome, and wind-powered electricity generation is difficult to become a global problem more than 10% to electrical network contribution rate.Meanwhile, wind-powered electricity generation online proposes the requirement meeting electrical network frequency stabilization, voltage stabilizing and steady phase to wind energy conversion system, increased considerably wind energy conversion system manufacturing cost and wind-powered electricity generation price thus, the large-scale application of wind-powered electricity generation is restricted.Solar energy is clean as one, free of contamination regenerative resource, and its development and utilization is considered to the important component part of world energy sources strategy.Solar power generation is a kind of method of alternative conventional energy resource, is one of emphasis of various countries scientist and attention from government.
Along with the Rapid Expansion of electrolytic aluminium scale in recent years, face high electric cost, the energy ezpenditure how reducing electric power supply system equipment has become the common issue faced by numerous same industry.2008, China's electrolytic aluminium output reached 1,317 ten thousand tons.According to the level of production of current domestic electrolytic aluminium, the direct current power consumption of often producing 1 ton of aluminium is about 13 200kWh, and whole industry direct current power consumption is about 1,738 hundred million degree, accounts for about 7 % of national power consumption, is typical high energy-consuming industry.Because the general series of Large Copacity aluminium cell is larger, huge power load concentrates in a production series, and electrolysis series produces any power fluctuation generated all can cause larger impact to electrical network.
Therefore; make full use of existing wind energy and solar energy; and be applicable to China's actual conditions; make full use of electrical network peak-valley difference (daytime (the utility network peak period) electricity price as jiangsu coast scale electricity consumption enterprise is 1.05 yuan/degree; then be down to 0.27 yuan/degree night (utility network paddy period)); improve Business Economic Benefit (profit), become a problem demanding prompt solution.
Applicant retrieves discovery, and publication number is the electrolytic aluminium device that the Chinese patent of CN 102943287A discloses a kind of wind light mutual complementing.The electrolytic aluminium device of this wind light mutual complementing have employed with wind-powered electricity generation, solar energy thermal-power-generating and net electricity triple combination for electrolytic aluminium provides the mode of electric energy, is utilized by the residual heat complementary that wind energy produces with non-grid-connected form and solar energy and aluminium cell.But it is the same with traditional electrolytic aluminium device, the power fluctuation that the electrolytic aluminium device of this wind light mutual complementing generates can cause larger impact to electrical network, and the peak-valley difference that can not make full use of electrical network improves Business Economic Benefit (profit), can not solve the power fluctuation of the electrolytic aluminium device of high load capacity to the impact of utility network.
Summary of the invention
The technical problem that the present invention solves is: propose the electrical control method that a kind of non-grid-connected multiple-energy-source works in coordination with the Electrolytic Aluminum System of power supply, the method can adapt to the fluctuation of wind-force and solar power generation, significantly reduce production cost, and the peak-valley difference that can make full use of electrical network improves Business Economic Benefit, and electrical network can be assisted to carry out peak regulation, alleviate peakload and the large caused peak regulation difficulty of low ebb load difference.
In order to solve the problems of the technologies described above, the technical scheme that the present invention proposes is: a kind of non-grid-connected multiple-energy-source works in coordination with the electrical control method of the Electrolytic Aluminum System of power supply, described Electrolytic Aluminum System comprises electrolytic aluminium device, wind power generation plant and device of solar generating, described wind power generation plant and device of solar generating are that described electrolytic aluminium device is powered with non-grid-connected form, carry out generating electricity and supplying aluminium cell after the waste heat recovery that described electrolytic aluminium device distributes; When utility network is in the peak period, utility network powers to described electrolytic aluminium device according to the minimum electricity of described electrolytic aluminium device needed for insulation operation, and the electricity that described wind power generation plant and solar condensing power generation device generate as a supplement; When utility network is in the paddy period, then utility network cancels the restriction of powering to described electrolytic aluminium device according to the minimum electricity of described electrolytic aluminium device needed for insulation operation.
The improvement of technique scheme is: described device of solar generating is solar condensing power generation device, the UTILIZATION OF VESIDUAL HEAT IN heat-conducting medium that described electrolytic aluminium device distributes is sent to the tubular receiver of device of solar generating by pipeline, thus device of solar generating can be utilized to carry out cogeneration.
Preferably, the insulation of described electrolytic aluminium device run needed for minimum electricity be only the aluminium cell of described electrolytic aluminium device is incubated and no longer recovery waste heat time electrolytic aluminium liquid amount of power supply required when keeping 860-980 DEG C.
Preferably, described heat-conducting medium is fused salt or conduction oil.
The beneficial effect that the present invention brings is:
1) non-grid-connected multiple-energy-source of the present invention works in coordination with the electrical control method of the Electrolytic Aluminum System of power supply, device of solar generating and wind power generation plant all adopt non-grid-connected mode to be that Electrolytic Aluminum System is powered, and can adapt to the wave characteristic of large-scale wind power and solar power generation; The present invention make full use of utility network electricity price between peak and valley (daytime (the utility network peak period) electricity price as jiangsu coast scale electricity consumption enterprise is 1.05 yuan/degree, then be down to 0.27 yuan/degree evening (utility network paddy period)), daytime, heat preservation of aluminium electrolytic cell ran, with wind-powered electricity generation and solar power generation as a supplement; Then mainly utilize evening wind-powered electricity generation, cogeneration and net electricity that aluminium cell is operated at full capacity, which adds the economic benefit of enterprise.
2) non-grid-connected multiple-energy-source of the present invention works in coordination with the electrical control method of the Electrolytic Aluminum System of power supply is while enterprise significantly increases economic benefit in the peak valley price difference making full use of utility network, also be provided with the function of hydroenergy storage station at night, peakload and the large caused peak regulation difficulty of low ebb load difference can be alleviated, to raising China electrical network efficiency, there is very important reality and strategic importance.Under the prerequisite that wind-powered electricity generation and solar power generation 100% utilize; Electrolytic Aluminum System can excess load use the paddy of utility network electric; this is than conventional hydroenergy storage station economize on electricity more than 30%; when such as a New Electrolytic Aluminium engineering peak modulation capacity reaches 1,000,000 KW; be equivalent to reduce investment outlay 8,000,000,000 yuans; also integrated power-saving more than 30%, also saves in addition and builds soil, protects environment.
3) the non-grid-connected multiple-energy-source of the present invention electrical control method commercial promise of working in coordination with the Electrolytic Aluminum System of power supply is good.The electrical control method that non-grid-connected multiple-energy-source of the present invention works in coordination with the Electrolytic Aluminum System of power supply makes aluminum electrolysis industry by the sustainable new industry of high energy-consuming industry virescence, electrical network friendly, have good economy, society and environmental benefit, overall economic efficiency is far above conventional electrolysis aluminium project.The present invention can promote China's high energy industrial structure fast and space layout adjusts wind-powered electricity generation aluminium reducing emission of carbon dioxide 12 tons per ton, as China 40% aluminium output adopts this method to produce, and 2,244 ten thousand tons, annual feast-brand mark coal, reducing emission of carbon dioxide 6,000 ten thousand tons.
Embodiment
Embodiment
The non-grid-connected multiple-energy-source of the present embodiment works in coordination with the electrical control method of the Electrolytic Aluminum System of power supply, wherein Electrolytic Aluminum System comprises electrolytic aluminium device, wind power generation plant and device of solar generating, wind power generation plant and device of solar generating are that described electrolytic aluminium device is powered with non-grid-connected form, carry out generating electricity and supplying aluminium cell after the waste heat recovery that electrolytic aluminium device distributes.
In the present embodiment, when utility network is in the peak period, utility network supplies the minimum electricity of electricity needed for insulation operation of described aluminium cell, and the electricity that wind power generation plant and solar condensing power generation device generate as a supplement; The electricity supply restriction of utility network to described electrolytic aluminium device is then cancelled when utility network is in the paddy period.In this example the insulation of electrolytic aluminium device run needed for minimum electricity be only the aluminium cell of electrolytic aluminium device is incubated and no longer recovery waste heat time electrolytic aluminium liquid required amount of power supply when keeping 860-980 DEG C.The electricity price between peak and valley that can make full use of utility network like this improves the economic benefit of enterprise, and auxiliary utility network carries out degree of depth peak regulation.
The present embodiment can also do following improvement: device of solar generating adopts solar condensing power generation device, the UTILIZATION OF VESIDUAL HEAT IN heat-conducting medium that electrolytic aluminium device distributes is sent to the tubular receiver of device of solar generating by pipeline, thus device of solar generating can be utilized to carry out cogeneration.Heat-conducting medium can adopt fused salt or conduction oil.
The present invention is not limited to the concrete technical scheme described in above-described embodiment, and all employings are equal to replaces the protection range that the technical scheme formed is application claims.
Claims (3)
1. a non-grid-connected multiple-energy-source works in coordination with the electrical control method of the Electrolytic Aluminum System of power supply, described Electrolytic Aluminum System comprises electrolytic aluminium device, wind power generation plant and solar condensing power generation device, it is characterized in that: described wind power generation plant and solar condensing power generation device are that described electrolytic aluminium device is powered with non-grid-connected form, carry out generating electricity and supplying aluminium cell after the waste heat recovery that described electrolytic aluminium device distributes; When utility network is in the peak period, utility network powers to described electrolytic aluminium device according to the minimum electricity of described electrolytic aluminium device needed for insulation operation, and the electricity that described wind power generation plant and solar condensing power generation device generate as a supplement; When utility network is in the paddy period, then utility network cancels the restriction of powering to described electrolytic aluminium device according to the minimum electricity of described electrolytic aluminium device needed for insulation operation; The UTILIZATION OF VESIDUAL HEAT IN heat-conducting medium that described electrolytic aluminium device distributes is sent to the tubular receiver of solar condensing power generation device by pipeline, thus solar condensing power generation device can be utilized to carry out cogeneration.
2. work in coordination with the electrical control method of the Electrolytic Aluminum System of power supply according to the non-grid-connected multiple-energy-source described in claim 1, it is characterized in that: the minimum electricity needed for the insulation of described electrolytic aluminium device runs be only the aluminium cell of described electrolytic aluminium device is incubated and no longer recovery waste heat time electrolytic aluminium liquid amount of power supply required when keeping 860-980 DEG C.
3. work in coordination with the electrical control method of the Electrolytic Aluminum System of power supply according to the non-grid-connected multiple-energy-source described in claim 1, it is characterized in that: described heat-conducting medium is fused salt or conduction oil.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310312695.2A CN103427424B (en) | 2013-07-24 | 2013-07-24 | Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system |
| PCT/CN2014/076778 WO2015010486A1 (en) | 2013-07-24 | 2014-05-05 | Power control method of aluminum electrolyzing system for non-grid-connected multi-energy collaborative power supply |
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| CN201310312695.2A CN103427424B (en) | 2013-07-24 | 2013-07-24 | Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system |
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| CN103427424A CN103427424A (en) | 2013-12-04 |
| CN103427424B true CN103427424B (en) | 2015-06-03 |
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| CN103427424B (en) * | 2013-07-24 | 2015-06-03 | 顾为东 | Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system |
| CN112260286B (en) * | 2020-10-10 | 2022-10-21 | 中国电力科学研究院有限公司 | Method, system, equipment and medium for participating in electric power system control of electrolytic aluminum load |
| CN116365552B (en) * | 2023-05-25 | 2023-08-15 | 武汉大学 | Control method and device for participation of electrolytic aluminum load in power grid frequency modulation based on temperature state |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005086953A (en) * | 2003-09-10 | 2005-03-31 | Nippon Telegr & Teleph Corp <Ntt> | Energy supply and demand control method and device |
| CN101610046B (en) * | 2008-06-16 | 2011-04-20 | 湖南晟通科技集团有限公司 | Method for utilizing waste heat of aluminum electrolyzing cell |
| CN101882809A (en) * | 2010-05-26 | 2010-11-10 | 上海先甲新能源科技有限公司 | Power supply method connecting new energy source and network power supply in parallel and having pitch peak converting control |
| CN102943287A (en) * | 2012-11-12 | 2013-02-27 | 东南大学 | Wind and solar aluminium electrolysis device |
| CN203382827U (en) * | 2013-07-24 | 2014-01-08 | 顾为东 | Non-grid-connected multi-energy synergic power supply aluminum electrolysis system |
| CN103422120B (en) * | 2013-07-24 | 2015-07-22 | 顾为东 | Electrolytic aluminium system adopting non-grid multi-energy collaborative power supply |
| CN103427424B (en) * | 2013-07-24 | 2015-06-03 | 顾为东 | Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system |
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| WO2015010486A1 (en) | 2015-01-29 |
| CN103427424A (en) | 2013-12-04 |
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