CN1707098A - Compressed air energy accumulating power generating station utilizing abandoned mine - Google Patents

Abstract

The present invention features that waste mine is pressure-resisting sealed to form chamber for storing compressed air. During valley power consumption of power network, excessive electric energy is used in driving air compressor to inflate the chamber for energy accumulation; whereas in peak power consumption of power network, the compressed air in the chamber is utilized to drive generator so as to realize peak-to-valley regulation. The present invention makes it possible to lower the construction cost of energy accumulating power station via utilizing waste mine.

Description

Utilize the Caes plant of abandoned mine

Affiliated technical field

The present invention is that the cavern is stored as pressurized air in a kind of abandoned mine sealing back that utilizes, and realizes the energy conversion system of Caes generating.Be mainly used in the tasks such as ' peak shifting and valley filling, frequency modulation, phase modulation ' of electrical network, to realize the safe and efficient and economical operation of electrical network.And obtain peak, the paddy price difference income of electricity price by this ' peak shifting and valley filling ' operation.When satisfying social electricity consumption consumption to greatest extent, save a large amount of generating resource investments.Belong to the energy conversion technical field.

Background technique

Electric energy is the energy of most convenient.Also be the most popular energy of mankind nowadays.Electric energy can be converted into other energy form in the simplest mode, and this makes it become human primary selection to the energy-consuming demand.

Yet electric energy is except the battery of preserving with the chemical energy form, and the electric energy of other form all must be the balance work system that generating, transmission of electricity, electricity consumption are finished synchronously.Because Human's production has different round the clock features with life activity, this makes the consumption of electric energy also just have the very large peak of fluctuation, paddy feature; 8 is the consumption peak of electric energy to point in evenings 10 in the morning, needs the power station to generate electricity at full capacity, satisfies need for electricity.10 is the low-valley interval of electric energy consumption to some the next mornings 8 at night, and the electric weight demand is little, forces many generator set removal of loads to withdraw from electrical network.And in the operation of power networks of reality, also have complicated more demand form: in the middle of one day, also there are a plurality of electricity consumption troughs, have the low ebb at weekend on Saturday, Sunday, have low ebb festival and holiday, have trough in different throughout the year season etc.

The trough feature of electric energy consumption is the formidable enemy of power grid security and economical operation, because the starting of Generator Set, particularly fired power generating unit and nuclear power generating sets and to be incorporated into the power networks be huge engineering, its process complexity consumes energy huge again, need the time long, have a strong impact on the life-span and the safety of generator set simultaneously, thereby in service at electrical network, frequently being incorporated into the power networks and unloading net of generator set is a kind of behavior of doing one's utmost to avoid.From the angle of safety and economy, this class generator set only is fit to this load of tape base and continues balance movement, and ripple, the paddy feature of consuming with social electricity consumption exist than big-difference.This species diversity just becomes the trouble it ' source ' of operation of power networks.

Simultaneously, this ripple, paddy characteristic make the electrical network must be by the maximum power consumption peak value configuration generating capacity of society, but in one day, a lot of low power consumption in a week, a year the time generating capacity left unused in a large number again, cause the unbalance waste of very large generating resource.Also such embarrassing phenomenon can not take place when the generating capacity construction catches up with social need for electricity: daytime, electricity was not enough, was forced to power cuts to limit consumption; Evening, electricity tood many or too much for use, generator set numerous and confused " being laid off ".And also there is similar phenomenon summer, the winter in 1 year.

From the hope of power science rule and electric power circle, the optimal running state of electrical network yes ripple disable state.Yet the social consumption rule of electric energy is to be not transfer with the subjective wishes of electric power circle.And from producing and the relational angle of consuming, obviously can only be that electrical network is deacclimatized the user, in the face of this species diversity, in order to guarantee the safety and economic operation of electrical network as possible, the policy below electric power circle has been taked;

The one, carry out peak, paddy price difference electricity price, utilize economic means to encourage the public as far as possible in the many electricity consumptions of paddy section, and in the few electricity consumption of crest segment.To reduce the fluctuation of electrical network as far as possible.Realize the regulatory function of ' peak load shifting '.At present some places time-of-use tariffs price difference the sixth of the twelve Earthly Branches up to 3-5 doubly.

The 2nd, the conversion regime of employing energy storage power generation utilizes special energy storage power generation factory in the low-valley interval accumulation of energy, and in the generating of peak of power consumption period, when adapting to social electricity consumption rule, ensures the balance movement of electrical network.

First kind of mode having certain effect aspect ' peak load shifting ' of electrical network, yet also is very restricted, and aspect household electricity, the rule of life of people ' going out the volt at night daytime ' can not have tangible change because of the price difference of electricity price.Thereby there is not effect substantially.Aspect the production electricity consumption, though it is attractive on the low electricity price surface to electricity consumption enterprise, but in fact, if enterprise because night electricity price cheaply and organize produce night more, then need multinomial expenses such as supplementary payments overtime pay, night transportation expenses, meal subsidy of night work, night shift organization and administration expense again, also have difficult problems such as management difficulty increasing, saving rate always is limited, upset normal job placement on the contrary, thereby in fact seldom have enterprise simple because the former thereby initiatively special arrangement night shift production of electricity price.In recent years along with the rising of wage level and various expenses, the interest that common electricity consumption enterprise opens night shift sharply descends especially.Thereby, lose effectiveness the sixth of the twelve Earthly Branches when price difference is not too big substantially at the peak of direct electricity consumer, paddy price difference electricity price mode.Unless continue to widen peak, paddy electricity price gap, it is obviously lucrative to reuse electric enterprise, otherwise the effect of this mode will all the more be desalinated.

Along with The development in society and economy, power consumption is at a high speed and rises, and it is faster to be that the peak value electricity consumption on daytime is risen, and the peak of electrical network, paddy fluctuation are also sharply enlarged, and makes the Security of electrical network and Economy all face increasing challenge.For when ensureing social electricity consumption, ensure the safety and the economical operation of electrical network again, greatly develop storage station, become the height common recognition and the active demand of electric power circle the sixth of the twelve Earthly Branches.

Storage station is a kind of special power station; Its generation driving force is not that fire can, nuclear energy, water can wait natural energy resources, but take from the electric energy that other generator sends on the electrical network, in the low power consumption period, the unnecessary electric energy that has more social power consumption on the electrical network is changed into other energy form such as water energy in storage station, the air compression energy, heat energy etc. can be stored the mode of the energy and lay in, the peak of power consumption period then conversely, the water that originally stores can be waited the generator for electricity generation that is used for promoting oneself, back other generator set on electrical network that is incorporated into the power networks is powered to the user, satisfy the need for electricity of peak period, thereby make electrical network can adapt to the rule that social electricity consumption is consumed, safety, satisfy social electricity consumption needs economically.See theoretically, when storage station accounts for a proper ratio in electrical network when, total electrical network just can be by the average power consumption configuration generating resource in the certain hour of society, save very considerable generating resource investment, same in other words generating resource just can support more social power consumption, creates bigger social benefit and economic benefit.

The electricity generating principle of storage station is different with common power station, it need set up can reverse work the energy conversion structure, this makes that the construction cost of storage station is quite high, although therefore have multiple mode can realize energy storage power generation, but what possess relative commercial viability at present only has pumped storage power station a kind of, the storage station of other type does not have to enter practical application owing to construction cost and operating cost basically.

We are the construction cost that example is observed it with traditional pumped storage power station; It is except the reservoir and power station that will build the ordinary water power station, also need to equip the huge pipeline equipment such as (tunnels) of water being taken out again past upstream from the downstream, and the generator of its equipment normally generates electricity--the synchronous unit of-electric dual-purpose, its cost height, operating conditions and management are again than common generator set complexity.Thereby causing its cost of electricity-generating high, economic benefit is bad.Its Economy to ' peak load shifting ' usefulness of electrical network is had a greatly reduced quality.It can be applied, and mostly is for the safety that ensures electrical network with for ensureing power supply quality such as power supply cycle, and is the supporting needs of part throttle characteristics of thermoelectricity, nuclear power generating sets.

The storage station of other type weighs just more uneconomical by building cost, the cavern will be stored at massif or the huge pressurized air of mine working in Caes power station as conventional thinking, cost almost is an astronomical figure, want Kao Feng, paddy electricity price price difference normally to manage and almost cannot, although thereby this class storage station energy conversion is without a doubt technical, but lay aside and neglect for a long time, can't drop into practical application.Trace it to its cause is exactly not possess economic feasibility.

In sum, the reason that hinders storage station's large-scale application is its high construction cost, if can reduce this cost significantly, storage station just can large-scale promotion, thereby improve the security of operation and the Economy of electrical network greatly, satisfy social need for electricity better, have very considerable economic and social benefit.Therefore, develop storage station on a large scale, and want and to move economically, just must solve its a construction cost difficult problem.

The invention technology contents

Traditional storage station is owing to the former of construction cost thereby do not have economic advantages, and this has limited its large-scale application, if solved a cost difficult problem, the future of storage station is then very bright.

In the construction cost of storage station, the accumulation of energy structure division has occupied the major part of complete cost, and change, generating, converting equipment and factory building only account for fraction.Therefore, reducing this a part of cost of accumulation of energy structure, is storage station can realize optimum normal operation in peak, paddy electricity price price difference scope key.

In order to reduce the cost of storage station, through studying for a long period of time, we have proposed to utilize abandoned mine to serve as the invention thinking of the accumulation of energy cavern in Caes power station.And based on this, released the technology of the present invention engineering system.

Basic principle of the present invention, be exactly to utilize oneself discarded mine, after the pressure-resistant seal of pithead is handled, directly serve as and store compressed-air actuated cavern, with air compressor unit, turbine unit, generator set, constituting with pressurized air jointly is the storage station of accumulation of energy medium.

The storage station of this structure is owing to omitted the construction cost of the accumulation of energy structure division that accounts for major part, and total cost is very cheap, only for having the part of storage station's construction cost now.Construction cost is spread out the part into the also just existing storage station of unit cost of electricity-generating cost of electricity-generating.Thereby possessed very good economic advantages.

Be described in detail the engineering structure of invention below;

The agent structure of engineering of the present invention is stored the cavern by abandoned mine with the pressurized air that well head sealing back forms, and air compressor unit, turbine unit, generator set, factory building, compressed air line, control valve, electric substation etc. form.

The basic functional principle of system is:

The A accumulation of energy

In the low electricity price period at night, the air compressor unit of system is started, and to the inflation of mine cavern, realizes with pressurized air being the accumulation of energy of medium

The B generating

The peak of power consumption period by day, the pressurized air that system stores is admitted to gas-turbine by pipeline and valve, the release of pressure expansion energy that gas-turbine is compressed air promotes rotation, the generating of drive generator set, electricity is sent into electrical network via electric substation, to user's power supply, promptly finish an energy storage power generation circulation thus

If charge into the pressurized air that the pressurized air of cavern consumes more than generating every day, then system is in macrocyclic energy accumulating state, and this state mainly is that stride season ' peak, the paddy ' that is used for summer, winter is regulated; The electric weight of electrical network carries out pressurized air when sufficient and stores in summer, and is used for generating in the winter time the time.

Further elaborate the structure and the working procedure of system below in conjunction with accompanying drawing:

Fig. 1 is the overall construction drawing of system.

Fig. 2 is the system works energy flow graph that electric energy can be changed to air compression when energy accumulating state.

Fig. 3 is that air compression can be to the energy flow graph of electric energy conversion when generating state for system works.

Fig. 4 is the accumulation of energy cavity group structural drawing that many mines are combined into.

As seen from Figure 1; Whole system by mine cavern 1, air compressor unit 2, generating set 3, Turbine unit 4, ventilating control valve 5, Generation Control valve 6, transformer station 7, factory building 8, console 9, One- way clutch 10,11, total valve 12, power transformation switch 13, transmission line of electricity 14, compressed air are failed Send house steward 15 to consist of. One end of ventilating control valve 5 is connected to the compressed air of air compressor 2 and fails Go out on the pipe, the other end is connected to the house steward 15 of compressed air turnover cavern. One end of Generation Control valve 6 Be connected on the air inlet pipe of gas-turbine 4, the other end also is connected on the pneumatic manifold 15.

The course of work of system is as follows:

As seen from Figure 2; When system works during in energy accumulating state, electric energy is to flow to native system by electrical network, 2 work of drive motors 3 band engine-driven air compressors, 1 inflation realizes accumulation of energy to the cavern.

As seen from Figure 3; When system works during in generating state, compressed air 1 is discharged from the cavern, Send into gas-turbine 4 by pipeline 15 and valve 12, valve 6, drive 3 of gas-turbine 4 drive motors Electricity, the flow direction of electric energy is to flow to electrical network by native system, to customer power supply.

The conversion of system between accumulation of energy and two kinds of operating modes of generating is by ventilating control valve 5 and Generation Control valve 6 Respectively switching realize; When ventilating control valve 5 opens and Generation Control valve 6 when cutting out system worker Make in the accumulation of energy operating mode, compressed air is to flow to cavern 1 by air compressor machine 2. When ventilating control valve 5 close and When Generation Control valve 6 was opened, system works was in generating operation mode, and compressed air is to flow to gas by cavern 1 Turbine 4. Simultaneously, console 9, power distribution circuit defeated to motor circuit and transformer station carries out respectively corresponding Compounding practice realize the conversion of operating mode.

The change working of system can be undertaken by the time that storage station and grid company are decided through consultation. Also can By the demand employing telemechanical mode direct remote control of dispatching of power netwoks person according to electrical network. Supporting to be embodied as electrical network Optimum state operation.

The generating capacity of system is determined by the storage capability of cavern. Large scale system forms the hole by a plurality of caverns The chamber group, to obtain large-scale compressed air storage capability, corresponding energy storage power generation scale just can be together Ratio enlarges (seeing Fig. 4).

Except large-scale power station, native system is applicable to too small hydropower station and even passes through a small mine The small cavities of sealing is that the microgenerator of single household's power supply is suitable for too. Adaptability is very wide.

The air compressor drive motors of system can adopt independent motor, also can adopt generating---the electric dual-purpose synchronous motor. When adopting dual-purpose machine, generating--motor by two one- way clutch 10, 11 are connected with gas-turbine with air compressor respectively, and the functional structure of this connection is; Work as system works When the accumulation of energy operating mode, dual-purpose unit is to work in electric motor state, and one-way clutch makes motor and turbine Machine is thrown off. And when system is in generating state, the generating of gas-turbine drive motor, one-way clutch makes Motor and air compressor are thrown off.

For small-sized storage station, and the Midget plant of single small mine formation, air compressor machine also can To adopt air driven, compression dual-purpose machine, can reduce like this original capital cost and (can economize and degas Turbine).

The advantage of invention technology

System of the present invention has possessed the main advantages of three aspects such as technology, economy, society.

On technological layer; Native system has the energy conversion efficiency height, and is simple in structure, easy to operate, Change working is rapid, generating operation mode from start to and net spee fast, can realize that automatic operating etc. is multinomial Advantage.

Compressed-air actuated pressurization is stored just can realize not having by air compressor and by-pass valve control merely Intermediate link is arranged, thereby its energy conversion loss is little. The conversion efficiency height.

Air compressor is a kind of simple and mechanical, firm in structure, operate very simple, the operation that needs Personnel seldom, maintenance workload also seldom, operating cost is low.

The structure of gas-turbine and existing generating steam turbine are similarly, but it is to work at normal temperatures, and structural requirement is much lower, and corresponding cost is also much lower.

System condition is transformed into generating state from inflated condition only needs open and close control valve 5 and 6 to change fast.Simultaneously, generator starts when being transformed into generating state, and the pressurized air of storage is the high state of pressure.The high-pressure air energy is huge, start fast, acceleration is good, and it is very short from starting the time that arrives the regulation rotating speed to drive turbo-generator, need the long period process that boiler is progressively heated and boosted, this time much shorter compared with power generation systems such as thermal power station, nuclear power station.System can be incorporated into the power networks at a terrific speed, has possessed the excellent properties that adapts to precipitous fast power consumption load ascend curve.Particularly in the peak demand that can reach aspect emergent frequency modulation, phase modulation and the impact of carrying peak load of electrical network to the accumulation of energy peak load stations.Even can be considerably beyond the fastest turbine power plant that is incorporated into the power networks at present, for electrical network when adapting to the electricity consumption consumption rule of society to greatest extent safety, operation provides reaction the sensitiveest the best guarantee economically.

Because equipment is simple, change working is simple, and native system can be carried out the unmanned operation of automatic control easily.Can realize fine mode by the direct scheduling controlling of electrical network General Dispatch Officer.This can significantly reduce cost again.

On generating capacity, native system can adapt to very broad power range, the microgenerator of a few hectowatt power of doing small mine from single village can operate to the hundreds of thousands of whole calcellation mine networking operation in large-scale mine city even up to a million kilowatts large energy accumulation power station.

In the flexibility of ' peak, paddy ' regulating power, native system is superior especially: can possess ' multi-operating mode, stride operating mode operation ' ability such as odd-numbered day, weekend, the season of striding simultaneously, and both can be to electricity consumption peak, paddy had been regulated round the clock; Also can be to regulating in the week with electric wave, paddy; Can also implement to regulate to the winter in 1 year, summer grade electric wave, paddy.Because the storage of pressurized air in mine is not subjected to time restriction, as long as the good airproof performance of mine, can long term storage, therefore, when summer, water power was abundant, system can adopt and carry out performance curve (hold every day greater than send out) compound mode in odd-numbered day, week, season and store in a large number, and when winter, (sending out every day greater than the holding) mode that oppositely makes up is generated electricity to remedy the water power decline of exerting oneself, and alleviates the degree of unbalancedness of electrical network.Certainly, this needs air storage mine group to have enough big capacity and sufficiently solid geologic structure, can store the ultrahigh pressure pressurized air of big quantity.The method that also can adopt city, a plurality of mine to merge operation enlarges capacity.

On technical pattern, this storage station that can stride the season accumulation of energy can be supporting with the season feature of hydroelectric capacity.Realize to a certain degree " the electricity winter in summer is used ", if be achieved, this will be an innovation greatly of operation power technology, can save very considerable generating resource investment.And improved the water power plant and abandoned the water waste during abundance of water in summer, and the embarrassed shape that can not at full capacity exert oneself even can't exert oneself during low water winter.Thereby also effectively improved the season balance of mains supply.

This season accumulation of energy energy force rate pumped storage power station of striding of native system is superior, owing to be subjected to the restriction of storage capacity, pumped storage power station is difficult to carry out the accumulation of energy of long periodicity in summer.And in the winter time, then again because of coming exhausted being difficult to of water to operate.By contrast, the source of air is unlimited supply.Therefore under the situation of cavern's volume abundance, native system can carry out electrical network peak, the paddy of long periodicity to be regulated.

On economic aspect; Native system is owing to saved the construction cost of the energy conversion structure division that accounts for major part, total cost only is existing any with the power power station part of (comprising existing any storage station), share on the cost of electricity-generating, the cost of its unit generated energy is the part of other type power station cost of electricity-generating only just also, has excellent economic.

On social aspect; Native system can produce excellent social benefit.

As everyone knows, the exploitation of mineral resources is prerequisites of human material wealth and material progress, and in the very long material progress history of the mankind, the exploitation of mineral reserve is accompanied by human civilized process.And the mining deposits of each concrete mine is always limited, and along with the passage of exploitation time, a large amount of mineral reserve are adopted most mine and discarded by people, become abandoned well.

Abandoned well is typical refuse in the idea in people's past, and because of to phreatic pollution, cause surface subsidence, and then threaten negative effect such as cities and towns geology safety to suffer people's attack.Still to the potential risk thing of people's life safety, in the mining safety rules, just there is special last shut-in well to handle regulation simultaneously to abandoned well.

In the mankind's urban development progress history, two kinds of train of thought features are arranged, a kind of is to rely on river water source, another kind is exactly to rely on mineral reserve.Even to this day, we can see that still many cities set up around the exploitation in mine.At China such as Pingxiang City, Datong, Panzhihua City etc. all are cities, typical mine.These cities are so-called single resource dependent form cities, and the exploitation of mining deposits is its economic powerhouse industry, other economic activity basically all around, depend on mining industry and form.

Mining deposits Anywhere is always limited.Along with the exhaustion of resource, the development of these cities, mine, bargh and the public's existence thereof all are faced with great challenge.In China, the exhausted city of this class mining deposits quantity is many, and country all will expend huge fund every year and assist these cities to carry out industrial transformation and public's relief, but even to this day, because difficulty is big, the population below the poverty line is many, produces little effect.This also is a generally acknowledged difficult problem in the world, is a big burden of various countries' economic development.

Therefore we just see such phenomenon in the exhausted city of mining deposits (town); On the one hand being that underground the friendship in length and breadth in a large number arranged, always reaching tens, up to a hundred even calcellation mine several hundred kilometers is used as refuse and abandons, is decaying and population poor day by day of city on the other hand.And this phenomenon is also being quickened seriousization.

The enforcement of system of the present invention will be started the Neoma Foam that resource is reproduced for these cities and bargh.

First social benefit function of native system is exactly that a large amount of calcellation mines is transformed into again for resource, and is no longer exhausted forever secondary electricity generation resource.

Second function of native system is exactly that industrial transformation for these cities creates conditions, and mine with exhausted resources enterprise originally can some or all ofly be converted into secondary electricity generation enterprise.Rely on cheap the lowest point electricity price electric power, can establish the new industry of other type.For new chance is created in the local public's the employment and the improvement of living.Also be that the new source of tax revenue and the new chance of development are created in local city.Might radiate the vigour of youth again in the city of some mineral resources exhaustions, in the large-scale mine city, even can form quite large-scale secondary electricity generation ability, is transformed into emerging secondary power supply city by the exhausted city of the mining deposits in past.Because electric power is the energy of most convenient in remote conveying, this has just set up a new good platform for striding the big optimization of region configuration energy.Being expected to realize one in a bigger scope is the big electrical network of balance movement substantially.

Balance movement demand from power supply grid, this advantage can also adopt the mode of ' power supply of staggering the time ' to realize: after promptly the city, mine has possessed the secondary electricity generation ability of enough scales in construction, big electrical network to this city, class mine only night during the lowest point power supply store for it, the electricity consumption on daytime is then born by its storage station.' paddy section electrical network far supplies to reach this city, class mine, crest segment uses nearby ' confession, use power mode, such confession, the fluctuation that can reduce storage station when generating main force's unit on the line loss of electrical network loopback electric power and big electrical network with power mode are impacted, with the operation that makes electrical network more economically and safety.Also greatly alleviated this class financial difficulties city and the public's thereof electricity charge total expenditure (being equivalent to the low-price electricity that the paddy section is used in these cities throughout the year), for certain condition is created in the improvement of living of its industrial transformation and the general public.

In addition, after abandoned well transform the air storage cavern as, because the cavern will be under the pressure resistant function of high-pressure air from now on for a long time, underground water subsided all controlled to the infiltration of mine and ground, and environmental quality is improved.Also improved the geology safety in these cities.

Mode of execution

Enforcement of the present invention is also uncomplicated, even also simpler than building the common power station with scale: only need abandoned mine is performed geology inspection and respective handling, then the hole is performed withstand voltage sealing with cement, steel etc.The main pipe 15 of a pressurized air turnover cavern is installed on closure, after what a total valve 12 is installed on the pipeline again pipeline is introduced generator factory building 8, introduce factory building 8 back pipelines and be divided into two-way, one the tunnel connects that ventilating control valve 5 backs connect with air compressor 2, another road is connected Generation Control valve 6 backs and gas-turbine 4 connects, and has promptly finished constructing and implementing of transformational structure between two kinds of energy of electric energy and air compression energy.

Generating is the same with the construction and the common power station of transmission of electricity part.

Claims (5)

1 one kinds of Caes plants that utilize abandoned mine to store the cavern as pressurized air, the cavern that the well head that will fill mine by giving up carries out forming after the withstand voltage sealing stores the cavern as pressurized air, and with air compressor, generator, gas-turbine, compressed air tunnel, compressed air control valve door, power transformation current conversion station, factory building institute is common forms, it is characterized in that: the pressurized air as the accumulation of energy medium is to be stored in the cavern that is formed by discarded mine sealing back.

2 Caes caverns according to claim 1, it is characterized in that: the sealing of pithead is to adopt withstand voltage enclosed construction, closure will reach enough thickness, be embedded with the contract conveyance conduit of air turnover cavern of a voltage supply in the middle of the closure, the total valve of a control pressurized air turnover cavern is housed on the pipeline.

3 store cavity groups according to the pressurized air of claim 1 and claim 2, and it is characterized in that: the mine of each calcellation can seal separately, outside the hole compressed air tunnel of each cavern are coupled together then.

4 Caes plants according to claim 1, it is characterized in that: the air compressor steam outlet pipe in power station is connected on the conveyance conduit of cavern by a control valve, form an accumulation of energy gas channel, the pressurized air that the power station produces when accumulation of energy operating mode passage thus enters cavern's storage.

5 Caes plants according to claim 1 and claim 4, it is characterized in that: the suction tude of the gas-turbine in power station is connected on the conveyance conduit of cavern by a control valve, form a generating gas channel, the pressurized air that the power station is stored in when generating operation mode in the cavern enters gas-turbine through passage thus, promotes the gas-turbine rotation and drives generator for electricity generation and power to the user.

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