CN104236130B - A kind of heat reservoir for solar light-heat power-generation system and control method thereof - Google Patents
A kind of heat reservoir for solar light-heat power-generation system and control method thereof Download PDFInfo
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- CN104236130B CN104236130B CN201410375633.0A CN201410375633A CN104236130B CN 104236130 B CN104236130 B CN 104236130B CN 201410375633 A CN201410375633 A CN 201410375633A CN 104236130 B CN104236130 B CN 104236130B
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- 238000010248 power generation Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 27
- 150000003839 salts Chemical class 0.000 claims abstract description 138
- 238000010438 heat treatment Methods 0.000 claims description 21
- 230000008676 import Effects 0.000 claims description 17
- 238000009825 accumulation Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims 1
- 230000008018 melting Effects 0.000 claims 1
- 238000005286 illumination Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000011217 control strategy Methods 0.000 description 8
- 238000004146 energy storage Methods 0.000 description 6
- 229910052720 vanadium Inorganic materials 0.000 description 5
- 230000005055 memory storage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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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
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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Abstract
The present invention relates to solar light-heat power-generation technical field, a kind of heat reservoir for solar light-heat power-generation system and control method thereof, including heat collecting field, hot tank, cold tank and heat-exchanger rig, the outlet of described heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to the entrance of described hot tank by pipeline valve A；The outlet of described hot tank is connected to the entrance of heat-exchanger rig by second pipe；The outlet of described heat-exchanger rig is connected to the first entrance of described cold tank by the 3rd pipeline；The outlet of described cold tank is connected to the entrance of described heat collecting field by the 4th pipeline, heat reservoir of the present invention and control method, mainly for comprising the hot and cold tank arrangement storing fuse salt in solar light-heat power-generation system, increase a bypass leading to cold tank newly in hot tank porch；By controlling fuse salt flow direction, it is achieved in the case of intensity of illumination surplus, store and utilize superfluous solar energy to greatest extent, the most effectively control hot tank storage liquid level.
Description
Technical field
The present invention relates to solar light-heat power-generation technical field, a kind of storage for solar light-heat power-generation system
Hot systems and control method thereof.
Background technology
Solar energy heating generating is a kind of clean energy resource mode concentrated and carry out scale generating.Trough system is current
In the middle of solar energy heating generation mode, technology maturity and commercialization checking degree are the highest.Heat required for solar energy thermal-power-generating
Source is all from solar irradiation, and the intensity of illumination of solar irradiation each time point in a day exists the biggest difference, when being
The solar energy that system is absorbed can not meet the heat required for solar energy thermal-power-generating, causes steam turbine power generation amount unstable, to electricity
Net causes enormous impact.How to ensure that the continual and steady generating of solar energy thermal-power-generating is the middle hang-up in the current energy source world, for
Solution system instability problem, is generally incorporated into hold over system in electricity generation system.Owing to generating operation mode changes at any time
Becoming, therefore for keeping stablizing of output, the design of the heat reservoir of solar energy thermo-power station and control method just seem outstanding
For important.
In the photo-thermal power generation technology utilizing this intermittent resource of solar energy, the most effectively store solar energy complete to meet
It continues power generation needs is an important problem.At present solar-thermal generating system causes hot tank heat accumulation for superfluous solar radiation
Volume arrives the control strategy after the upper limit, the most all uses domination set thermal field to defocus the control strategy abandoning light.Such as patent application
Number be CN201010568311.X, filing date 2010-12-01, entitled " large-scale all vanadium flow energy-storage battery system and
Its control method and application " patent of invention, its technical scheme is: the present invention relates to the integrated neck of all vanadium flow energy-storage battery system
Territory, particularly large-scale all vanadium flow energy-storage battery system design and corresponding progress control method thereof.Extensive all-vanadium flow
Different by several or equal-wattage scale the battery cell system of energy storage battery system forms, and passes through liquid between cellular system
Body pipeline connects, by valve and the terminal valve of battery module on regulation fluid connection tube road, it is achieved battery system is not
With power scale, the operational mode of different capabilities demand, and the independent operating of all-vanadium liquid flow energy storage battery cellular system.Above-mentioned
Method is similar with existing direction, all cannot utilize solar energy resources to greatest extent, cause in solar illuminating resource the richest
Rich period solar-thermal generating system does not capture solar energy with maximum capacity so that the efficiency of photo-thermal power generation declines, and economy drops
Low.
Summary of the invention
In order to overcome the problems referred to above, it is proposed that one can Appropriate application solar energy resources in maximum efficiency, at the superfluous sun
Radiation causes hot tank heat accumulation volume to arrive after the upper limit, it is to avoid uses light field to defocus and abandons heat accumulation in light method reaches to control hot tank and melt
Melt a kind of heat reservoir for solar light-heat power-generation system and the control method thereof of salt quality purpose.
For achieving the above object, technical scheme is as follows:
A kind of heat reservoir for solar light-heat power-generation system, it is characterised in that: include heat collecting field, hot tank, cold tank
And heat-exchanger rig, the outlet of described heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to institute by pipeline valve A
State the entrance of hot tank；The outlet of described hot tank is connected to the entrance of heat-exchanger rig by second pipe；Going out of described heat-exchanger rig
Mouth is connected to the first entrance of described cold tank by the 3rd pipeline；The outlet of described cold tank is connected to described collection by the 4th pipeline
The entrance of thermal field, the exit of described heat collecting field is connected to bypass the 7th pipeline by the first pipeline, then by bypass the 7th pipe
Road is connected to pipeline valve B, then is connected to the second entrance of described cold tank by the 6th pipeline by pipeline valve B.
Heat-conducting medium in the hot tank of heat reservoir and cold tank is fuse salt with the heat-conducting fluid of heat collecting field.
A kind of control method of the heat reservoir for solar light-heat power-generation system, it is characterised in that:
The first step, in hot tank, current time storage fuse salt quality m is reference input, sets the hot tank storage fuse salt upper limit
For Mmax, storage fuse salt lower limit is Mmin, and 0≤Mmin≤Mmax；When in solar illuminating heating heat collecting field and described hot tank
Storage fuse salt has reached the upper limit, i.e. m >=MmaxTime, close the pipeline valve A of the porch of hot tank, open the of cold tank simultaneously
The pipeline valve B of two porch configurations, makes the fuse salt after heating import to cold tank；
Second step, fuse salt imports to cold tank, upper and lower at setting hot tank storage fuse salt when storing fuse salt in hot tank
Between limit, i.e. Mmin <m<MmaxTime, control system keeps pipeline valve A and pipeline valve B state constant；
3rd step, fuse salt continues to import to cold tank, in the case of having solar illuminating heating heat collecting field, hot tank internal memory
Storage fuse salt drops to lower limit with the operation of electricity generation system, i.e. m≤MminTime, open the pipeline valve A of hot tank porch, simultaneously
Close the pipeline valve B of the second porch configuration of cold tank, make hot tank can continue to heat accumulation；
4th step, when storing fuse salt in hot tank and storing between fuse salt bound at the hot tank of setting, i.e. Mmin <m<
MmaxTime, keep pipeline valve A and pipeline valve B state constant；
M >=M at oncemaxAfter, it is further continued for circulation and performs the first step.
Described pipeline valve A and pipeline valve B is the electrically operated valve being controlled its on an off by the signal of telecommunication.
It is an advantage of the current invention that:
1, heat reservoir of the present invention and control method are mainly for comprising storage fuse salt in solar light-heat power-generation system
Hot and cold tank arrangement, increase newly in hot tank porch one lead to cold tank bypass；By controlling fuse salt flow direction, it is achieved
In the case of intensity of illumination surplus, store and utilize superfluous solar energy to greatest extent, the most effectively control hot tank storage liquid level.
Although 2, routine defocuses control strategy and can complete the control to hot tank storage fuse salt quality, but by defocusing
Controlling to have lost the utilization rate enriching illumination resource in the daytime, the present invention controls the same of hot tank storage fuse salt quality reaching
Time, do not reduce solar-thermal generating system to illumination resource absorption efficiency by heat collecting field being defocused, but by storing at hot tank
Fuse salt changes fuse salt when arriving the upper limit and flows to, and is imported in cold tank by the heat fusing salt after heat collecting field heats, promotes cold tank
Fuse salt temperature, arrives the purpose of Appropriate application surplus illumination resource.
3, the hottest tank storage fuse salt quality can be effectively controlled by this control method and maintain the hot tank of setting
Between the storage fuse salt upper limit and lower limit, and owing to removing fuse salt loss in slot type solar-thermal generating system, fuse salt is conventional
The coldest tank of storage medium and hot tank, while hot tank storage fuse salt quality is effectively controlled, also ensure that cold tank is in the daytime
During system is run, do not have the situation that fuse salt exhausts.
Accompanying drawing explanation
Fig. 1 is the structural representation of heat reservoir of the present invention.
Fig. 2 is the control flow chart of heat reservoir control method of the present invention.
Fig. 3 is that the fuse salt in the present invention flows to complementary relationship curve chart.
Fig. 4 is storage fuse salt mass-change curve figure in the hot tank in the present invention.
Fig. 5 is storage fuse salt mass-change curve figure in the cold tank in the present invention.
Fig. 6 is storage fuse salt temperature changing curve diagram in the cold tank in the present invention.
Detailed description of the invention
Embodiment 1
A kind of heat reservoir for solar light-heat power-generation system includes heat collecting field, hot tank, cold tank and heat-exchanger rig, institute
The outlet stating heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to the entrance of described hot tank by pipeline valve A；
The outlet of described hot tank is connected to the entrance of heat-exchanger rig by second pipe；The outlet of described heat-exchanger rig is by the 3rd pipeline
It is connected to the first entrance of described cold tank；The outlet of described cold tank is connected to the entrance of described heat collecting field, institute by the 4th pipeline
The exit stating heat collecting field is connected to bypass the 7th pipeline by the first pipeline, then is connected to pipeline valve by bypass the 7th pipeline
Door B, then it is connected to the second entrance of described cold tank by the 6th pipeline by pipeline valve B.
Embodiment 2
A kind of heat reservoir for solar light-heat power-generation system includes heat collecting field, hot tank, cold tank and heat-exchanger rig, institute
The outlet stating heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to the entrance of described hot tank by pipeline valve A；
The outlet of described hot tank is connected to the entrance of heat-exchanger rig by second pipe；The outlet of described heat-exchanger rig is by the 3rd pipeline
It is connected to the first entrance of described cold tank；The outlet of described cold tank is connected to the entrance of described heat collecting field, institute by the 4th pipeline
The exit stating heat collecting field is connected to bypass the 7th pipeline by the first pipeline, then is connected to pipeline valve by bypass the 7th pipeline
Door B, then it is connected to the second entrance of described cold tank by the 6th pipeline by pipeline valve B.In the hot tank of heat reservoir and cold tank
The heat-conducting fluid of heat-conducting medium and heat collecting field be fuse salt.
Embodiment 3
A kind of control method of the heat reservoir for solar light-heat power-generation system,
The first step, in hot tank, current time storage fuse salt quality m is reference input, sets the hot tank storage fuse salt upper limit
For Mmax, storage fuse salt lower limit is Mmin, and 0≤Mmin≤Mmax；
The upper limit, i.e. m >=M has been reached when storing fuse salt in solar illuminating heating heat collecting field and described hot tankmaxTime, close
Close the pipeline valve A of the porch of hot tank, open the pipeline valve B of the second porch configuration of cold tank, after making heating simultaneously
Fuse salt imports to cold tank；
Second step, fuse salt imports to cold tank, upper and lower at setting hot tank storage fuse salt when storing fuse salt in hot tank
Between limit, i.e. Mmin <m<MmaxTime, control system keeps pipeline valve A and pipeline valve B state constant；
3rd step, fuse salt continues to import to cold tank, in the case of having solar illuminating heating heat collecting field, hot tank internal memory
Storage fuse salt drops to lower limit with the operation of electricity generation system, i.e. m≤MminTime, open the pipeline valve A of hot tank porch, simultaneously
Close the pipeline valve B of the second porch configuration of cold tank, make hot tank can continue to heat accumulation；
4th step, when storing fuse salt in hot tank and storing between fuse salt bound at the hot tank of setting, i.e. Mmin <m<
MmaxTime, keep pipeline valve A and pipeline valve B state constant；
M >=M at oncemaxAfter, it is further continued for circulation and performs the first step.
Embodiment 4
A kind of control method of the heat reservoir for solar light-heat power-generation system,
The first step, in hot tank, current time storage fuse salt quality m is reference input, sets the hot tank storage fuse salt upper limit
For Mmax, storage fuse salt lower limit is Mmin, and 0≤Mmin≤Mmax；
The upper limit, i.e. m >=M has been reached when storing fuse salt in solar illuminating heating heat collecting field and described hot tankmaxTime, close
Close the pipeline valve A of the porch of hot tank, open the pipeline valve B of the second porch configuration of cold tank, after making heating simultaneously
Fuse salt imports to cold tank；
Second step, fuse salt imports to cold tank, upper and lower at setting hot tank storage fuse salt when storing fuse salt in hot tank
Between limit, i.e. Mmin <m<MmaxTime, control system keeps pipeline valve A and pipeline valve B state constant；
3rd step, fuse salt continues to import to cold tank, in the case of having solar illuminating heating heat collecting field, hot tank internal memory
Storage fuse salt drops to lower limit with the operation of electricity generation system, i.e. m≤MminTime, open the pipeline valve A of hot tank porch, simultaneously
Close the pipeline valve B of the second porch configuration of cold tank, make hot tank can continue to heat accumulation；
4th step, when storing fuse salt in hot tank and storing between fuse salt bound at the hot tank of setting, i.e. Mmin <m<
MmaxTime, keep pipeline valve A and pipeline valve B state constant；
M >=M at oncemaxAfter, it is further continued for circulation and performs the first step.
Described pipeline valve A and pipeline valve B is the electrically operated valve being controlled its on an off by the signal of telecommunication.
Embodiment 5
A kind of heat reservoir for solar light-heat power-generation system, it is characterised in that: include heat collecting field, hot tank, cold tank
And heat-exchanger rig, the outlet of described heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to institute by pipeline valve A
State the entrance of hot tank；The outlet of described hot tank is connected to the entrance of heat-exchanger rig by second pipe；Going out of described heat-exchanger rig
Mouth is connected to the first entrance of described cold tank by the 3rd pipeline；The outlet of described cold tank is connected to described collection by the 4th pipeline
The entrance of thermal field, the exit of described heat collecting field is connected to bypass the 7th pipeline by the first pipeline, then by bypass the 7th pipe
Road is connected to pipeline valve B, then is connected to the second entrance of described cold tank by the 6th pipeline by pipeline valve B.
Heat-conducting medium in the hot tank of heat reservoir and cold tank is fuse salt with the heat-conducting fluid of heat collecting field.
A kind of control method of the heat reservoir for solar light-heat power-generation system, it is characterised in that:
The first step, in hot tank, current time storage fuse salt quality m is reference input, sets the hot tank storage fuse salt upper limit
For Mmax, storage fuse salt lower limit is Mmin, and 0≤Mmin≤Mmax；
The upper limit, i.e. m >=M has been reached when storing fuse salt in solar illuminating heating heat collecting field and described hot tankmaxTime, close
Close the pipeline valve A of the porch of hot tank, open the pipeline valve B of the second porch configuration of cold tank, after making heating simultaneously
Fuse salt imports to cold tank；
Second step, fuse salt imports to cold tank, upper and lower at setting hot tank storage fuse salt when storing fuse salt in hot tank
Between limit, i.e. Mmin <m<MmaxTime, control system keeps pipeline valve A and pipeline valve B state constant；
3rd step, fuse salt continues to import to cold tank, in the case of having solar illuminating heating heat collecting field, hot tank internal memory
Storage fuse salt drops to lower limit with the operation of electricity generation system, i.e. m≤MminTime, open the pipeline valve A of hot tank porch, simultaneously
Close the pipeline valve B of the second porch configuration of cold tank, make hot tank can continue to heat accumulation；
4th step, when storing fuse salt in hot tank and storing between fuse salt bound at the hot tank of setting, i.e. Mmin <m<
MmaxTime, keep pipeline valve A and pipeline valve B state constant；
M >=M at oncemaxAfter, it is further continued for circulation and performs the first step.
Described pipeline valve A and pipeline valve B is the electrically operated valve being controlled its on an off by the signal of telecommunication.
Embodiment 6
In the case of intensity of illumination surplus, when storing fuse salt in hot tank and reaching the upper limit, Traditional control strategy is at this
Shi Tongchang uses the heat collector of domination set thermal field to carry out defocusing control, reduces the flow flowing into hot tank through heat collecting field fuse salt, by
This prevents hot tank from the tank that overflows occurring.But so can lose the utilization rate enriching illumination resource in the daytime, reduce solar light-heat power-generation
The generating efficiency of system and economy.The present invention proposes the heat reservoir structure of a kind of new solar light-heat power-generation system
And control method.
This kind is for the heat reservoir of solar light-heat power-generation system as shown in Figure 1, including heat collecting field (device 1), hot tank
(device 2), heat-exchanger rig (device 3) and cold tank (device 4).The design of solar light-heat power-generation station is improved, above-mentioned
The outlet of heat collecting field is connected to pipeline valve A by the first pipeline, then is connected to the entrance of above-mentioned hot tank by pipeline valve A；On
The exit stating heat collecting field is connected to bypass the 7th pipeline by the first pipeline, then is connected to pipeline valve by bypass the 7th pipeline
Door B, then it is connected to the second entrance of above-mentioned cold tank by the 6th pipeline by pipeline valve B.By controlling pipeline valve A and pipeline
Valve B folding, controls fuse salt flow direction.
In the case of intensity of illumination surplus, when storing fuse salt in hot tank and reaching the upper limit, conventional control strategy is at this
Shi Tongchang uses the heat collector of domination set thermal field to carry out defocusing control, and the heat fusing salt reducing heat collecting field output flows into the stream of hot tank
Amount, simultaneously because in the case of the output of hot tank flows into the heat fusing salt constant flow that heat-exchange power generation system is used for heat exchange generating, reach
The fuse salt quality purpose less than higher limit is stored in controlling hot tank.In the present invention, the heat accumulation of solar light-heat power-generation system controls
Method is, by closing the pipeline valve A of the porch configuration of hot tank, opens the pipeline of the second porch configuration of above-mentioned cold tank
Valve B, imports cold tank by the fuse salt after heating, makes cold tank as superfluous solar energy storage device.When in hot tank, storage is melted
When salt drops to lower limit, open the pipeline valve A of the porch configuration of hot tank, close the second porch configuration of above-mentioned cold tank
Pipeline valve B, recovery heat tank heat accumulation state.
Specifically control method is as shown in Figure 2:
The first step, in above-mentioned hot tank, storage fuse salt quality m is as reference input, sets on above-mentioned hot tank storage fuse salt
Limit (Mmax), and storage fuse salt lower limit (Mmin), and 0≤≤Mmax。
Second step, in the case of having solar illuminating heating heat collecting field, and in above-mentioned hot tank, storage fuse salt reaches
The upper limit, i.e. m >=MmaxTime, control system is closed the above-mentioned pipeline valve A of the porch configuration of above-mentioned hot tank, is opened above-mentioned simultaneously
The above-mentioned pipeline valve B of the second porch configuration of cold tank, makes the fuse salt after heating import cold tank.When storing in above-mentioned hot tank
Fuse salt is setting between hot tank storage fuse salt bound, i.e. Mmin<m<MmaxTime, control system keeps above-mentioned pipeline valve A
Constant with above-mentioned pipeline valve B state.
3rd step, in the case of having solar illuminating heating heat collecting field, when storing fuse salt in above-mentioned hot tank with generating
The operation of system drops to lower limit, i.e. m≤MminTime, control system open above-mentioned hot tank porch configuration pipeline valve A,
Simultaneously close off the pipeline valve B of the second porch configuration of above-mentioned cold tank, make hot tank can continue to heat accumulation.
4th step, is setting between hot tank storage fuse salt bound when storing fuse salt in above-mentioned hot tank, i.e. Mmin<m<
MmaxTime, control system keeps above-mentioned pipeline valve A and above-mentioned pipeline valve B state constant.M >=M at oncemaxAfter, it is further continued for following
Ring performs the first step.
As it is shown on figure 3, No. 1 coordinate system is that hot tank stores fuse salt quality, No. 2 coordinate systems are for flowing to hot tank fuse salt stream
Amount, No. 3 coordinate systems are for flowing to cold tank fuse salt flow.It can be seen that with storage fuse salt quality in hot tank as reference input, with
In hot tank, the 95% of storage fuse salt total capacity as the Hysteresis control upper limit, and the 85% of storage fuse salt total capacity is as Hysteresis control
Lower limit.Storage fuse salt has reached the upper limit in hot tank, i.e. during m >=95%, flows to hot tank fuse salt flow-reduction to zero, heat collecting field
Output fuse salt flows to cold tank.Otherwise, drop to lower limit when storing fuse salt in hot tank, i.e. during m≤85%, flow to cold tank and melt
Salt flow-reduction is to zero, and heat collecting field output fuse salt flows to hot tank.Melted in setting hot tank storage when storing fuse salt in hot tank
Between salt bound, i.e. 85% < m < when 95%, fuse salt traffic organising holding current state.Thus can obtain, use the present invention too
The heat reservoir structure of sun energy solar-thermal generating system and control method thereof, solar light-heat power-generation system can efficiently control molten
Melt salt flow direction.
As shown in Figure 4, the hottest tank storage fuse salt quality can be effectively controlled by this control method and account for total measurement (volume)
85 ~ 95% between, and due in slot type solar-thermal generating system remove fuse salt loss, fuse salt conventional storage media is the coldest
Tank and hot tank, while hot tank storage fuse salt quality is effectively controlled, also ensure cold tank in system in the daytime is run, no
There will be the situation that fuse salt exhausts, as it is shown in figure 5, storage fuse salt quality maintains 5 ~ 15% in cold tank.
As shown in Figure 6, by utilizing cold tank superfluous solar energy to be stored, in the coldest tank and from changing
Heat generating system flows back to the fuse salt temperature of cold tank and is about 290 DEG C.And in the case of solar illuminating intensity surplus, such as
Relatively enrich the period in illumination in summer resource, when using the control method of the present invention, can be by cold by cold tank heat accumulation control algolithm
In tank, storage fuse salt temperature is promoted to 370 DEG C from 290 DEG C.This means that the heat reservoir of photo-thermal power generation stores more heat
Amount can be used for generating electricity.
It can thus be seen that it is an advantage of the current invention that: although routine defocuses control strategy and can complete to store hot tank
The control of fuse salt quality, but have lost the utilization rate enriching illumination resource in the daytime by defocusing control, and the present invention is reaching
While controlling hot tank storage fuse salt quality, do not reduce solar-thermal generating system to illumination resource by heat collecting field being defocused
Absorption efficiency, but a bypass leading to cold tank is increased newly in hot tank porch, change when hot tank storage fuse salt arrives the upper limit
Become fuse salt to flow to, it is achieved that control the function of hot tank fuse salt liquid level；Surplus solar energy is stored in cold tank simultaneously and compares scattered
Burnt control has higher utilization rate to solar energy thermal resource, it is possible to extend solar-thermal generating system generating dutation；Last too
In sun energy solar-thermal generating system engineering design, cold tank and hot tank spacing distance are the nearest, and the newly-increased engineering brought that bypasses becomes
This cost is the least.
MminAnd MmaxSet with the nominal designed value of light thermo-power station relevant, m is actual storage in the hot tank of current time
Fuse salt quality, MmaxIn being the control logic that we set, the fuse salt stored in starting the hot tank of cold tank heat accumulation control strategy
Quality higher limit, MminIn being the control logic that we set, the fuse salt stored in stopping the hot tank of cold tank heat accumulation control strategy
Quality level value, should meet relation M under normal circumstancesmin≤m≤Mmax。MmaxAnd MminChoose can be according to actual motion warp
Test, and meet 0≤Mmin≤Mmax, such as MminThe hot tank of=10%* can store the biggest quality (the hottest tank appearance of fuse salt
Long-pending), MmaxThe hot tank of=85%* can store the biggest quality of fuse salt.
Claims (3)
1. the control method for the heat reservoir of solar light-heat power-generation system, it is characterised in that:
Heat reservoir for solar light-heat power-generation system includes heat collecting field, hot tank, cold tank and heat-exchanger rig, described heat collecting field
Outlet be connected to pipeline valve A by the first pipeline, then be connected to the entrance of described hot tank by pipeline valve A；Described hot tank
Outlet be connected to the entrance of heat-exchanger rig by second pipe；The outlet of described heat-exchanger rig is connected to institute by the 3rd pipeline
State the first entrance of cold tank；The outlet of described cold tank is connected to the entrance of described heat collecting field, described heat collecting field by the 4th pipeline
Exit be connected to bypass the 7th pipeline by the first pipeline, then be connected to pipeline valve B by bypass the 7th pipeline, then by
Pipeline valve B is connected to the second entrance of described cold tank by the 6th pipeline；
The first step, in hot tank current time storage fuse salt quality m be reference input, set hot tank storage the fuse salt upper limit as
Mmax, storage fuse salt lower limit is Mmin, and 0 ＜ Mmin＜ Mmax；
The upper limit, i.e. m >=M has been reached when storing fuse salt in solar illuminating heating heat collecting field and described hot tankmaxTime, close heat
The pipeline valve A of the porch of tank, opens the pipeline valve B of the second porch configuration of cold tank simultaneously, makes melting after heating
Salt imports to cold tank；
Second step, fuse salt imports to after cold tank, when store in hot tank fuse salt set hot tank storage fuse salt bound it
Between, i.e. Mmin <m<MmaxTime, control system keeps pipeline valve A and pipeline valve B state constant；
3rd step, fuse salt continues to import to cold tank, and in the case of having solar illuminating heating heat collecting field, in hot tank, storage is molten
Melt salt and drop to lower limit with the operation of electricity generation system, i.e. m≤MminTime, open the pipeline valve A of hot tank porch, simultaneously close off
The pipeline valve B of the second porch configuration of cold tank, makes hot tank can continue to heat accumulation；
4th step, when storing fuse salt in hot tank and storing between fuse salt bound at the hot tank of setting, i.e. Mmin <m<MmaxTime,
Keep pipeline valve A and pipeline valve B state constant；
M >=M at oncemaxAfter, it is further continued for circulation and performs the first step.
The control method of a kind of heat reservoir for solar light-heat power-generation system the most according to claim 1, it is special
Levy and be: the heat-conducting medium in the hot tank of heat reservoir and cold tank is fuse salt with the heat-conducting fluid of heat collecting field.
The control method of a kind of heat reservoir for solar light-heat power-generation system the most according to claim 2, it is special
Levy and be: described pipeline valve A and pipeline valve B is the electrically operated valve being controlled its on an off by the signal of telecommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410375633.0A CN104236130B (en) | 2014-08-01 | 2014-08-01 | A kind of heat reservoir for solar light-heat power-generation system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410375633.0A CN104236130B (en) | 2014-08-01 | 2014-08-01 | A kind of heat reservoir for solar light-heat power-generation system and control method thereof |
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| CN104236130A CN104236130A (en) | 2014-12-24 |
| CN104236130B true CN104236130B (en) | 2016-08-24 |
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| CN104713251B (en) * | 2015-03-24 | 2017-05-24 | 东方电气集团东方锅炉股份有限公司 | Solar photo-thermal power station and heat absorption system thereof |
| CN105444437B (en) * | 2015-11-23 | 2017-05-31 | 中国东方电气集团有限公司 | The light field flow rate of molten salt of slot type light thermo-power station with defocus regulation cooperative control device |
| CN109237827A (en) * | 2017-05-26 | 2019-01-18 | 天津滨海光热技术研究院有限公司 | A kind of slot type molten salt thermal power station heat collecting field operating system and operation method |
| CN107166758A (en) * | 2017-06-30 | 2017-09-15 | 天津滨海光热技术研究院有限公司 | Electricity-saving type gravity salt discharge formula photo-thermal and control method |
| CN107166779A (en) * | 2017-06-30 | 2017-09-15 | 天津滨海设备配套技术有限公司 | Stabilizing energy-saving type photo-thermal and control method |
| CN109059312B (en) * | 2018-07-06 | 2020-03-17 | 中国电建集团西北勘测设计研究院有限公司 | Multi-tank type heat storage device and method for fused salt storage tank of photo-thermal power station |
| CN109739280A (en) * | 2019-01-08 | 2019-05-10 | 北京首航艾启威节能技术股份有限公司 | A kind of Novel electric tracing control system and method |
| CN110657067B (en) * | 2019-11-14 | 2024-03-15 | 西安热工研究院有限公司 | Offshore wind power compressed air energy storage type heat reservoir and operation method |
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| DE102008036527A1 (en) * | 2008-08-06 | 2010-02-11 | Flagsol Gmbh | Thermal energy storing and unstoring method for use in solar thermal power plant, involves using one of storage tanks for storing partial conveyed volume of heat transfer medium at higher and lower temperatures states of medium |
| CN102734095A (en) * | 2011-04-07 | 2012-10-17 | 张建城 | Slotted solar intermediate/low-temperature ORC (organic rankine cycle) thermal power generator |
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