CN207218258U - A kind of polynary coupled tank system - Google Patents
A kind of polynary coupled tank system Download PDFInfo
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- CN207218258U CN207218258U CN201721283696.9U CN201721283696U CN207218258U CN 207218258 U CN207218258 U CN 207218258U CN 201721283696 U CN201721283696 U CN 201721283696U CN 207218258 U CN207218258 U CN 207218258U
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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Abstract
The utility model discloses a kind of polynary coupled tank system, including fired power generating unit, fired power generating unit is connected to transformer one, alternating-current switch device, hot energy-storage module and main transformer, transformer one is connected with flywheel energy storage group module, alternating-current switch device is connected with transformer two, transformer two is connected with battery energy storage group module, the left end of hot energy-storage module is connected with unit heat regenerative system, main transformer is connected with power network, and fired power generating unit, flywheel energy storage group module, battery energy storage group module and hot energy-storage module are coordinated control centre with peak-frequency regulation and be connected.The beneficial effects of the utility model：It is reasonable in design, peak-frequency regulation is carried out to fired power generating unit power network using flywheel energy storage group module, battery energy storage group module, the polynary coupling of a variety of energy storage technologies of hot energy-storage module successively, improve fired power generating unit grid power and frequency transient follow-up capability, increase substantially fired power generating unit flexibility, mitigate fired power generating unit part fatigue damage, while improve unit safety and economy.
Description
Technical field
Fired power generating unit peak load regulation network frequency modulation technology field is the utility model is related to, it particularly relates to a kind of polynary coupling
Energy-storage system.
Background technology
Due to the pressure of environmental protection, China's regenerative resource industry development is rapid, and renewable energy power generation ratio is gradual
Increase.But the fluctuation due to regenerative resource, followability and other restraining factors, China's most area is abandoned can be again
The wind of abandoning of the raw energy abandons optical issue sternness, and the consumption of new energy electric power turns into power industry urgent problem to be solved.To alleviate ring
Border protection pressure, renewable energy utilization proportion is improved, provide more generating volume spaces for regenerative resource, flare up in recent years
Group of motors is depressed load, and most of main force's fired power generating unit is for a long time compared with underrun, peak regulation depth deficiency, efficiency significantly under
Drop.The advance to perfect order of China's power market reform simultaneously, competition mechanism, traditional thermoelectricity and renewable energy are introduced in Generation Side
One of the bulk composition of source as electricity market, together participate in competition.Under new power supply and demand environment, regenerative resource is in
Preferential to utilize status, fired power generating unit is then to undertake the vital power supply of stable power network, the capacity and power output characteristic of fired power generating unit
The dispatching principle of regenerative resource is preferentially dissolved with national grid energy-saving and emission-reduction so that fired power generating unit assume responsibility for base load and master
Want peak-frequency regulation task, the problems such as fired power generating unit AGC methods of operation cause coal consumption increase, the loss increase of unit part life,
And there is certain limitation in frequency modulation performance.
To adapt to preferentially utilize the direction of Renewable Energy Development, it can be contributed, conceded according to market demand flexible modulation
Space preferably receives regenerative resource to network, to improve the stability of grid power and frequency, with reference to market rules and thermoelectricity
The own characteristic of unit, lifts market adaptability and the market competitiveness of fired power generating unit energetically, fully excavates and combines existing fire
The peak-frequency regulation ability of group of motors, seeking the Technology Ways for improving fired power generating unit flexibility has important practical significance.By flywheel
The composite energy storage systems such as energy storage, hot energy storage, the battery energy storage polynary coupled tank system in parallel with fired power generating unit, response speed
Hurry up, accurate control, bidirectional modulation ability etc. can improve the depth peak modulation capacity and mains frequency follow-up capability of unit, have simultaneously
Frequency modulation function, existing unit operation pattern can be matched, can synchronously improve the safe for operation of grid stability and fired power generating unit
It is a kind of preferable solution of the reply containing extensive regenerative resource network system peak-frequency regulation demand with economy.
Therefore, a kind of polynary coupled tank system is designed, turns into the important way that fired power generating unit improves flexibility.
Utility model content
, can the utility model proposes a kind of polynary coupled tank system for the above-mentioned technical problem in correlation technique
Overcome the above-mentioned deficiency of prior art.
To realize above-mentioned technical purpose, what the technical solution of the utility model was realized in：
A kind of polynary coupled tank system, including fired power generating unit, the fired power generating unit are connected to transformer one, exchange
Switching device, hot energy-storage module and main transformer, the transformer one are connected with flywheel energy storage group module, the alternating-current switch dress
Put and be connected with transformer two, the transformer two is connected with battery energy storage group module, and the left end of the hot energy-storage module is connected with
Unit heat regenerative system, the main transformer are connected with power network, the fired power generating unit, flywheel energy storage group module, battery energy storage group mould
Block and hot energy-storage module are coordinated control centre with peak-frequency regulation and are connected.
Further, the fired power generating unit includes boiler, and the boiler is connected with steam turbine, and the steam turbine is connected with hair
Motor, the right-hand member of the generator are connected with main transformer.
Further, the flywheel energy storage group module includes flywheel, and the flywheel is connected by permanent-magnet brushless DC electric machine
There is PWM converter two, the PWM converter two is connected with PWM converter one, the right-hand member and transformer of the PWM converter one
One connection.
Further, the battery energy storage group module includes battery, and the battery is connected with PCS by DC switchgear
Energy accumulation current converter, the right-hand member of the PCS energy accumulation current converters are connected with transformer two.
Further, the hot energy-storage module is connected by water pump with unit heat regenerative system.
Preferably, the hot energy-storage module includes heat storage can, and the left end of the heat storage can is connected with water pump, the right side of heat storage can
End be connected with boilers heated electrically, the right-hand member of the boilers heated electrically is connected with fired power generating unit, the boilers heated electrically also with unit backheat system
System connection.
Further, the fired power generating unit connects transformer one, alternating-current switch device, hot energy-storage module by wire respectively
And main transformer.
Further, the boilers heated electrically uses resistance-type, electric pole type or electrolemma formula boilers heated electrically.
Further, the battery uses lead-acid battery, nickel-cadmium cell, lithium ion battery, sodium-sulphur battery or all-vanadium flow
Battery.
The beneficial effects of the utility model：The utility model is designed reasonably, stored up successively using flywheel energy storage group module, battery
The polynary coupling of module, a variety of energy storage technologies of hot energy-storage module can be organized peak-frequency regulation is carried out to fired power generating unit power network, improve thermoelectricity
Unit grid power and frequency transient follow-up capability, fired power generating unit flexibility is increased substantially, mitigate fired power generating unit part fatigue
Damage, while improve unit safety and economy.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
In the required accompanying drawing used be briefly described, it should be apparent that, drawings in the following description are only of the present utility model
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to this
A little accompanying drawings obtain other accompanying drawings.
Fig. 1 is a kind of principle schematic of polynary coupled tank system according to the utility model embodiment；
In figure：
1st, boiler；2nd, steam turbine；3rd, generator；4th, transformer one；5th, PWM converter；6th, PWM converter two；7th, permanent magnetism
Brshless DC motor；8th, flywheel；9th, boilers heated electrically；10th, heat storage can；11st, water pump；12nd, alternating-current switch device；13rd, transformer two；
14th, PCS energy accumulation current converters；15th, DC switchgear；16th, battery；17th, flywheel energy storage group module；18th, hot energy-storage module；19、
Battery energy storage group module；20th, main transformer；21st, peak-frequency regulation coordinates control centre；22nd, fired power generating unit；23rd, power network；24th, machine
Group heat regenerative system.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, every other embodiment that those of ordinary skill in the art are obtained all belongs to
In the scope of the utility model protection.
As shown in figure 1, a kind of polynary coupled tank system according to the utility model embodiment, including fired power generating unit
22, the fired power generating unit 22 is connected to transformer 1, alternating-current switch device 12, hot energy-storage module 18 and main transformer 20,
The transformer 1 is connected with flywheel energy storage group module 17, and the alternating-current switch device 12 is connected with transformer 2 13, the change
Depressor 2 13 is connected with battery energy storage group module 19, and the left end of the hot energy-storage module 18 is connected with unit heat regenerative system 24, institute
State main transformer 20 and be connected with power network 23, the fired power generating unit 22, flywheel energy storage group module 17, battery energy storage group module 19 and heat
Energy-storage module 18 is coordinated control centre 21 with peak-frequency regulation and is connected.
In one embodiment, the fired power generating unit 22 includes boiler 1, and the boiler 1 is connected with steam turbine 2, described
Steam turbine 2 is connected with generator 3, and the right-hand member of the generator 3 is connected with main transformer 20.
In one embodiment, the flywheel energy storage group module 17 includes flywheel 8, and the flywheel 8 passes through brushless, permanently
Direct current generator 7 is connected with PWM converter 26, and the PWM converter 26 is connected with PWM converter 1, the PWM converter
One 5 right-hand member is connected with transformer 1.
In one embodiment, the battery energy storage group module 19 includes battery 16, and the battery 16 is opened by direct current
Close device 15 and be connected with PCS energy accumulation current converters 14, the right-hand member of the PCS energy accumulation current converters 14 is connected with transformer 2 13.
In one embodiment, the hot energy-storage module 18 is connected by water pump 11 with unit heat regenerative system.
In one embodiment, the hot energy-storage module 18 includes heat storage can 10, the left end and water of the heat storage can 10
Pump 11 connects, and the right-hand member of heat storage can 10 is connected with boilers heated electrically 9, and the right-hand member of the boilers heated electrically 9 is connected with fired power generating unit 22, institute
Boilers heated electrically 9 is stated also to be connected with unit heat regenerative system 24.
In one embodiment, the fired power generating unit 22 connects transformer 1, alternating-current switch device by wire respectively
12nd, hot energy-storage module 18 and main transformer 20.
In one embodiment, the boilers heated electrically 9 is using resistance-type, electric pole type or electrolemma formula boilers heated electrically.
In one embodiment, the battery 16 is using lead-acid battery, nickel-cadmium cell, lithium ion battery, sodium-sulphur battery
Or all-vanadium flow battery.
In order to facilitate above-mentioned technical proposal of the present utility model is understood, below by way of new to this practicality in specifically used mode
The above-mentioned technical proposal of type is described in detail.
When specifically used, it is following control system that peak-frequency regulation described in the utility model, which coordinates control centre, its
Business is that the electricity volume for quickly and accurately making power plant in the case where fired power generating unit needs peaking operation follows power network demand electricity
Change, control fired power generating unit, flywheel energy storage group module, hot energy-storage module and battery energy storage group module cooperative are completed peak regulation and appointed
Business.
For the utility model when grid requirements fired power generating unit reduces load, most of electric energy that generator is sent is through main transformer pressure
Device is transported to power network, and unnecessary electric energy passes through transformer one, PWM converter one and PWM converter two successively first, drives permanent magnetism
Brushless direct current motor works, and brushless, permanently excited direct current motor flywheel driven rotates, and electric energy is converted into mechanical energy storage in flywheel
Energy storage group module；After flywheel energy storage group module is fully charged, closes alternating-current switch device and DC switchgear, generator are sent
Part electric energy through transformer two and energy accumulation current converter, be stored in battery；If battery electric quantity is full of, still need to reduce online electricity
Amount, fired power generating unit start load down operation, and steam turbine turns down admission valve, and peak regulation is carried out with certain load down rate；In flywheel
When energy storage group module and battery energy storage group module are in abnormal operating state, start emergent boilers heated electrically, boilers heated electrically consumption
Water of the part electric energy heating from unit heat regenerative system, hot water are sent into heat storage can, and electric energy is changed into thermal energy storage in hot energy storage mould
Block, the hot water in heat storage can are pumped into unit heat regenerative system through feedwater.
For the utility model when grid requirements fired power generating unit raises load, flywheel drives brushless, permanently excited direct current motor first
Generate electricity, the mechanical energy stored in flywheel energy storage group module is changed into electric energy, and electric energy is successively through PWM converter two, PWM converter
First, transformer one and main transformer are transported to power network；Secondly closure alternating-current switch device and DC switchgear, battery discharge,
Electric energy is transported to power network by energy accumulation current converter, transformer two and main transformer successively；Load needed for peak regulation is not met yet, fire
Group of motors load up is run, and steam turbine opens big admission valve, and peak regulation is carried out with certain load up rate；Stored simultaneously in heat storage can
Hot water through feedwater be pumped into unit bleeder heater.
Boilers heated electrically described in the utility model can use resistance-type, electric pole type or electrolemma formula boilers heated electrically, control system
System using it is multistage start, stop and rationally between control electric heating tube the temperature, pressure of the time difference of start and stop and electric boiler delay
Time, realize first open first stop, after open after the method for operation stopped；Battery can use lead-acid battery, nickel-cadmium cell, lithium-ion electric
Pond, sodium-sulphur battery or all-vanadium flow battery.
Flywheel energy storage group module and battery energy storage group module discharge and recharge described in the utility model are all two-way, you can
With peak load shifting；But wherein flywheel energy storage group module has superpower ultrafast charging and discharging capabilities, and service life is grown；Hot energy-storage module
Emergent unidirectional consumption electric energy, during underload, flywheel electric discharge Fill valley, power is quickly climbed, and contributes to coal-burning boiler in unit stable
Burning；In the system hot energy-storage module, battery energy storage group module and other available energy-storage modules come from different backgrounds and possess different abilities coupled tank combination
System；Peak-frequency regulation coordinate control centre's control fired power generating unit, flywheel energy storage group module and polynary coupled tank combined system it
Between coordinated operation.
In summary, the utility model is designed reasonably, flywheel energy storage group module, battery energy storage group module, heat are utilized successively
The polynary coupling of a variety of energy storage technologies of energy-storage module carries out peak-frequency regulation to fired power generating unit power network, improves fired power generating unit grid power
With frequency transient follow-up capability, fired power generating unit flexibility is increased substantially, mitigates fired power generating unit part fatigue damage, improves simultaneously
Unit safety and economy.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc., the utility model should be included in
Protection domain within.
Claims (9)
1. a kind of polynary coupled tank system, it is characterised in that including fired power generating unit（22）, the fired power generating unit（22）Connect respectively
It is connected to transformer one（4）, alternating-current switch device（12）, hot energy-storage module（18）And main transformer（20）, the transformer one（4）
It is connected with flywheel energy storage group module（17）, the alternating-current switch device（12）It is connected with transformer two（13）, the transformer two
（13）It is connected with battery energy storage group module（19）, the hot energy-storage module（18）Left end be connected with unit heat regenerative system（24）,
The main transformer（20）It is connected with power network（23）, the fired power generating unit（22）, flywheel energy storage group module（17）, battery energy storage group
Module（19）With hot energy-storage module（18）Coordinate control centre with peak-frequency regulation（21）Connection.
A kind of 2. polynary coupled tank system according to claim 1, it is characterised in that the fired power generating unit（22）Including
Boiler（1）, the boiler（1）It is connected with steam turbine（2）, the steam turbine（2）It is connected with generator（3）, the generator（3）
Right-hand member and main transformer（20）Connection.
A kind of 3. polynary coupled tank system according to claim 1, it is characterised in that the flywheel energy storage group module
（17）Including flywheel（8）, the flywheel（8）Pass through permanent-magnet brushless DC electric machine（7）It is connected with PWM converter two（6）, it is described
PWM converter two（6）It is connected with PWM converter one（5）, the PWM converter one（5）Right-hand member and transformer one（4）Connection.
A kind of 4. polynary coupled tank system according to claim 1, it is characterised in that the battery energy storage group module
（19）Including battery（16）, the battery（16）Pass through DC switchgear（15）It is connected with PCS energy accumulation current converters（14）, it is described
PCS energy accumulation current converters（14）Right-hand member and transformer two（13）Connection.
A kind of 5. polynary coupled tank system according to claim 1, it is characterised in that the hot energy-storage module（18）It is logical
Cross water pump（11）With unit heat regenerative system（24）Connection.
A kind of 6. polynary coupled tank system according to claim 5, it is characterised in that the hot energy-storage module（18）Bag
Include heat storage can（10）, the heat storage can（10）Left end and water pump（11）Connection, heat storage can（10）Right-hand member be connected with electric food warmer
Stove（9）, the boilers heated electrically（9）Right-hand member and fired power generating unit（22）Connection, the boilers heated electrically（9）Also with unit heat regenerative system
（24）Connection.
A kind of 7. polynary coupled tank system according to claim 1, it is characterised in that the fired power generating unit（22）Pass through
Wire connects transformer one respectively（4）, alternating-current switch device（12）, hot energy-storage module（18）And main transformer（20）.
A kind of 8. polynary coupled tank system according to claim 6, it is characterised in that the boilers heated electrically（9）Using
Resistance-type, electric pole type or electrolemma formula boilers heated electrically.
A kind of 9. polynary coupled tank system according to claim 4, it is characterised in that the battery（16）Using plumbic acid
Battery, nickel-cadmium cell, lithium ion battery, sodium-sulphur battery or all-vanadium flow battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721283696.9U CN207218258U (en) | 2017-09-30 | 2017-09-30 | A kind of polynary coupled tank system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721283696.9U CN207218258U (en) | 2017-09-30 | 2017-09-30 | A kind of polynary coupled tank system |
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| Publication Number | Publication Date |
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| CN207218258U true CN207218258U (en) | 2018-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516905A (en) * | 2017-09-30 | 2017-12-26 | 北京北方三合能源技术有限公司 | A kind of polynary coupled tank system |
-
2017
- 2017-09-30 CN CN201721283696.9U patent/CN207218258U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516905A (en) * | 2017-09-30 | 2017-12-26 | 北京北方三合能源技术有限公司 | A kind of polynary coupled tank system |
| CN107516905B (en) * | 2017-09-30 | 2023-09-01 | 北京北方三合能源技术有限公司 | Multi-element coupling energy storage system |
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