CN109340065A - A kind of photo-thermal power station participates in peak load regulation network control method and device - Google Patents

A kind of photo-thermal power station participates in peak load regulation network control method and device Download PDF

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Publication number
CN109340065A
CN109340065A CN201810877620.1A CN201810877620A CN109340065A CN 109340065 A CN109340065 A CN 109340065A CN 201810877620 A CN201810877620 A CN 201810877620A CN 109340065 A CN109340065 A CN 109340065A
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photo
thermal power
power station
operating status
peak
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CN109340065B (en
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赵亮
王湘艳
于若英
李红霞
李俊贤
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Economic and Technological Research Institute of State Grid Qianghai Electric Power Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
Economic and Technological Research Institute of State Grid Qianghai Electric Power Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G6/00—Devices for producing mechanical power from solar energy
    • F03G6/06—Devices for producing mechanical power from solar energy with solar energy concentrating means
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/66—Regulating electric power
    • G05F1/67—Regulating electric power to the maximum power available from a generator, e.g. from solar cell
    • 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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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

The present invention provides a kind of photo-thermal power stations to participate in peak load regulation network control method and device, first obtains the operating status of photo-thermal power station, and determines the peak capacity of photo-thermal power station；Then the peak capacity of photo-thermal power station is reported into dispatching of power netwoks mechanism, and receives the peak regulation instruction value that dispatching of power netwoks mechanism issues；The active power for finally controlling Turbo-generator Set in photo-thermal power station, reduces electric system cost of investment, saves the energy, and can guarantee the safe and stable operation of power grid.The present invention realizes photo-thermal power station under different operating statuses by self generating capabilities response peak regulation instruction value, support is provided to solar power generation responsive electricity grid peak regulation demand, be conducive to photo-thermal power generation safety grid-connection and Optimized Operation, provide reliable basis to improve the Technical Economy of photo-thermal power station.

Description

A kind of photo-thermal power station participates in peak load regulation network control method and device
Technical field
The present invention relates to solar energy generation technology fields, and in particular to a kind of photo-thermal power station participation peak load regulation network control method And device.
Background technique
Photo-thermal power station is a kind of important form of Solar use.The photo-thermal power station for configuring heat reservoir can be significantly smooth Generated output reduces generated output fluctuation caused by solar irradiance changes.Solar energy thermal-power-generating passes through the heat accumulation system of large capacity System realize long-time energy storage, a part of solar energy is converted to thermal energy storage in heat reservoir on daytime, after the dusk or Person's power grid needs to discharge heat when peak regulation for generating electricity to meet the requirement of power grid, while it is also ensured that electric power exports more Add steady and reliable.Therefore, the solar energy thermo-power station for being configured with heat reservoir can go out power station in capacity allowed band Power is translated, and a kind of schedulable resource and peaking power source can be become.
With the continuous construction of photo-thermal power station, the grid connection capacity of photo-thermal power generation is gradually increased, in the case, if photo-thermal is electric It stands and does not play its peak modulation capacity, then system needs to increase more conventional backup power sources to ensure that power system security is reliably transported Row causes electric grid investment increase and energy waste.Have peak modulation capacity, is that photo-thermal power generation is maximum compared to photovoltaic power generation excellent Gesture, it is easier to be received by power grid, large-scale photo-thermal power station cannot participate in peak load regulation network, lead to power grid unbalanced supply-demand, in turn Power grid is caused to be unable to safe and stable operation.
Summary of the invention
In order to overcome above-mentioned cost of investment in the prior art to increase, energy waste and power grid are unable to safe and stable operation not Foot, the present invention provide a kind of photo-thermal power station and participate in peak load regulation network control method and device, first obtain the operating status of photo-thermal power station, And the peak capacity of photo-thermal power station is determined based on operating status；Then the peak capacity of photo-thermal power station is reported into dispatching of power netwoks machine Structure, and receive the peak regulation instruction value that dispatching of power netwoks mechanism issues；Finally based on peak regulation instruction value, photo-thermal power station peak capacity and Operating status controls the active power of Turbo-generator Set in photo-thermal power station, reduces electric system cost of investment, saves energy Source, and can guarantee the safe and stable operation of power grid.
In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical scheme that:
On the one hand, the present invention provides a kind of photo-thermal power station participation peak load regulation network control method, comprising:
The operating status of photo-thermal power station is obtained, and determines the peak capacity of photo-thermal power station based on the operating status；
The peak capacity of photo-thermal power station is reported into dispatching of power netwoks mechanism, and receives the peak regulation instruction that dispatching of power netwoks mechanism issues Value；
Based on turbine generator in the peak regulation instruction value, the peak capacity of photo-thermal power station and operating status control photo-thermal power station The active power of unit.
The photo-thermal power station includes light and heat collection system, steam generating system, Turbo-generator Set and heat reservoir；
The operating status include the first operating status, the second operating status, third operating status, the 4th operating status and 5th operating status.
First operating status includes:
The light and heat collection system is heated the heat transfer medium to operating temperature, and the heat transfer medium enters steam generation system System, the steam generating system heats water supply by heat transfer medium, and the superheated steam of generation is delivered to turbine generator Group；
Second operating status includes:
The light and heat collection system is heated the heat transfer medium to operating temperature, and the heat transfer medium enters heat reservoir；
The third operating status includes:
The high-temperature heat-storage medium of the heat reservoir release enters steam generating system, and the steam generating system passes through height Warm heat-storage medium heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set；
4th operating status includes:
When practical direct sunlight irradiation level, which is more than or equal to photo-thermal power station, presets direct projection irradiation level, the light and heat collection system It heats the heat transfer medium to operating temperature, described heat transfer medium a part enters steam generating system, the steam generation system System heats water supply by heat transfer medium, and the superheated steam of generation is delivered to Turbo-generator Set, and the heat transfer medium is another Part enters heat reservoir；
5th operating status includes:
When direct sunlight irradiation level actual value be less than photo-thermal power station preset direct projection irradiation level when, the light and heat collection system and Heat reservoir discharges heat transfer medium simultaneously, and the heat transfer medium enters steam generating system, and the steam generating system passes through biography Thermal medium heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set.
The peak capacity of photo-thermal power station is determined based on the first operating status, comprising:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the first operating status under photo-thermal power station Peak capacity, P1 eFor the active power of photo-thermal power station under the first operating status, δ is minimum technology power factor,For steamer The maximum power of generating set.
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity, comprising:
The upper peak capacity determines as the following formula:
Wherein, P1 UpWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station it is upper Peak capacity；For the active power of photo-thermal power station maximum power tracing under current direct sunlight irradiation level, P1 eFor the first fortune The active power of photo-thermal power station under row state；
The lower peak capacity determines as the following formula:
Wherein, P1 DownWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status under photo-thermal power station Peak capacity, δ are minimum technology power factor,For the maximum power of Turbo-generator Set.
The peak capacity of photo-thermal power station is determined based on the second operating status, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the second operating status,For the maximum of Turbo-generator Set Power；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H2The photo-thermal power station rated power operation duration is maintained for heat reservoir under the second operating status；For The minimum heat storage capacity of heat reservoir；η is energy conversion efficiency of the steam generating system to Turbo-generator Set；For heat accumulation The exothermic maximum power of system；For heat reservoir accumulation of heat t2Quantity of heat storage after hour, andFor storage The accumulation of heat power of hot systems, t2For the thermal storage time of heat reservoir.
The peak capacity of photo-thermal power station is determined based on third operating status, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status,For the maximum of Turbo-generator Set Power,For the active power of photo-thermal power station under third operating status；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H3The photo-thermal power station rated power operation duration is maintained for heat reservoir under third operating status；For The minimum heat storage capacity of heat reservoir；For the exothermic maximum power of heat reservoir；η is steam generating system to turbine generator The energy conversion efficiency of unit；For heat reservoir heat release t3Quantity of heat storage after hour, and hFLHFor the specified heat accumulation duration of heat reservoir, t3For the Exotherm Time of heat reservoir under third operating status.
The peak capacity of photo-thermal power station is determined based on the 4th operating status, comprising:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the 4th operating status under photo-thermal power station Peak capacity,For the active power of photo-thermal power station under the 4th operating status,For the maximum power of Turbo-generator Set, δ For minimum technology power factor.
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity, comprising:
The upper peak capacity determines as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station it is upper Peak capacity,For the active power of photo-thermal power station under the 4th operating status；
The lower peak capacity determines as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status under photo-thermal power station Peak capacity,For the maximum power of Turbo-generator Set, δ is minimum technology power factor.
The peak capacity of photo-thermal power station is determined based on the 5th operating status, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the 5th operating status, P5 eFor photo-thermal electricity under the 5th operating status The active power stood,For the maximum power of Turbo-generator Set；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the lower peak capacity of photo-thermal power station under the 5th operating status,For the maximum of Turbo-generator Set Power, δ are minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H5The photo-thermal power station rated power operation duration is maintained for heat reservoir under the 5th operating status,For The maximum heat storage capacity of heat reservoir,For the minimum heat storage capacity of heat reservoir, t5For heat reservoir under the 5th operating status Exotherm Time,For the heat release power of heat reservoir,For the exothermic maximum power of heat reservoir；η is steam generation Energy conversion efficiency of the system to Turbo-generator Set.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the first operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under the first operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the first operating status control photo-thermal power station The active power of motor group, further includes:
Work as P1 e> P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrack P1 UD-i；
Work as P1 e< P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTrack P1 UD-i；
Wherein, P1 UD-iIt is dispatching of power netwoks mechanism according to P1 UpAnd P1 DownThe dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the second operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under the second operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTracking
Wherein,For the active power of photo-thermal power station under the second operating status,For dispatching of power netwoks mechanism according toWith H2The dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and third operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium3 eTrack P3 UDH-i；
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Up] model In enclosing, by the heat release flow control P for increasing heat transfer medium3 eTrack P3 UDH-i；
Wherein,It is dispatching of power netwoks mechanism according to P3 Up、P3 DownAnd H3The dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the 4th operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsModel In enclosing, by the heat release flow control for reducing heat transfer mediumTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the 4th operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsModel In enclosing, condenser is defocused by the mirror station control system in light and heat collection system, controls P3 eTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange Interior, condenser is focused by the mirror station control system in the light and heat collection system, controlTracking
Wherein,For dispatching of power netwoks mechanism according toWithThe dispatch command value issued.
Based on steamer hair in peak regulation instruction, the peak capacity of photo-thermal power station and the 5th operating status control photo-thermal power station The active power of motor group, comprising:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsModel In enclosing, by the heat release flow control for reducing heat transfer mediumTrack P5 UDH-i；
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsRange It is interior, by the heat release flow control for increasing heat transfer mediumTrack P5 UDH-i；
Wherein,It is dispatching of power netwoks mechanism according to P5 Up、P5 DownAnd H5The dispatch command value issued.
On the other hand, the present invention also provides a kind of photo-thermal power stations to participate in peak load regulation network control device, comprising:
Determining module determines photo-thermal power station for obtaining the operating status of photo-thermal power station, and based on the operating status Peak capacity；
Communication module for the peak capacity of photo-thermal power station to be reported dispatching of power netwoks mechanism, and receives dispatching of power netwoks mechanism The peak regulation instruction value issued；
Control module, for peak capacity and operating status control photo-thermal based on the peak regulation instruction value, photo-thermal power station The active power of Turbo-generator Set in power station.
The photo-thermal power station includes light and heat collection system, steam generating system, Turbo-generator Set and heat reservoir；
The determining module includes acquiring unit；
The operating status that the acquiring unit obtains include the first operating status, the second operating status, third operating status, 4th operating status and the 5th operating status.
The determining module further includes the first determination unit, and first determination unit includes:
First judging unit, for judging whether photo-thermal power station uses maximal power tracing to control；
First computing unit, for calculating the downward of photo-thermal power station when photo-thermal power station is controlled using maximal power tracing Peak capacity；When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
First computing unit is specifically used for:
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the first operating status under photo-thermal power station Peak capacity, P1 eFor the active power of photo-thermal power station under the first operating status, δ is minimum technology power factor,For steamer The maximum power of generating set.
First computing unit is specifically used for:
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity is determined as the following formula:
Wherein, P1 UpWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station it is upper Peak capacity；For the active power of photo-thermal power station maximum power tracing under current direct sunlight irradiation level, P1 eFor the first fortune The active power of photo-thermal power station under row state；
Lower peak capacity is determined as the following formula:
Wherein, P1 DownWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status under photo-thermal power station Peak capacity, δ are minimum technology power factor,For the maximum power of Turbo-generator Set.
The determining module includes the second determination unit, and second determination unit is specifically used for:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the second operating status,For the maximum of Turbo-generator Set Power；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H2The photo-thermal power station rated power operation duration is maintained for heat reservoir under the second operating status；For The minimum heat storage capacity of heat reservoir；η is energy conversion efficiency of the steam generating system to Turbo-generator Set；For heat accumulation The exothermic maximum power of system；For heat reservoir accumulation of heat t2Quantity of heat storage after hour, andFor storage The accumulation of heat power of hot systems, t2For the thermal storage time of heat reservoir.
The determining module includes third determination unit, and the third determination unit is specifically used for:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status,For the maximum of Turbo-generator Set Power, P3 eFor the active power of photo-thermal power station under third operating status；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein, P3 DownFor the upper peak capacity of photo-thermal power station under third operating status, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H3The photo-thermal power station rated power operation duration is maintained for heat reservoir under third operating status；For The minimum heat storage capacity of heat reservoir；For the exothermic maximum power of heat reservoir；η is steam generating system to turbine generator The energy conversion efficiency of unit；For heat reservoir heat release t3Quantity of heat storage after hour, and hFLHFor the specified heat accumulation duration of heat reservoir, t3For the Exotherm Time of heat reservoir under third operating status.
The determining module includes the 4th determination unit, and the 4th determination unit includes:
Second judgment unit, for judging whether photo-thermal power station uses maximal power tracing to control；
Second computing unit, for calculating the downward of photo-thermal power station when photo-thermal power station is controlled using maximal power tracing Peak capacity；When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
Second computing unit is specifically used for:
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the 4th operating status under photo-thermal power station Peak capacity,For the active power of photo-thermal power station under the 4th operating status,For the maximum power of Turbo-generator Set, δ is Minimum technology power factor.
Second computing unit is specifically used for:
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity is determined as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station it is upper Peak capacity,For the active power of photo-thermal power station under the 4th operating status；
Lower peak capacity is determined as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status under photo-thermal power station Peak capacity,For the maximum power of Turbo-generator Set, δ is minimum technology power factor.
The determining module includes the 5th determination unit, and the 5th determination unit is specifically used for:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the 5th operating status, P5 eFor photo-thermal electricity under the 5th operating status The active power stood,For the maximum power of Turbo-generator Set；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the lower peak capacity of photo-thermal power station under the 5th operating status,Most for Turbo-generator Set High-power, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H5The photo-thermal power station rated power operation duration is maintained for heat reservoir under the 5th operating status,For The maximum heat storage capacity of heat reservoir,For the minimum heat storage capacity of heat reservoir, t5For heat reservoir under the 5th operating status Exotherm Time,For the heat release power of heat reservoir,For the exothermic maximum power of heat reservoir；η is steam generation Energy conversion efficiency of the system to Turbo-generator Set.
The control module includes first control unit；
The first control unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the first operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
The first control unit also particularly useful for:
Work as P1 e> P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrack P1 UD-i；
Work as P1 e< P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTrack P1 UD-i；
Wherein, P1 UD-iIt is dispatching of power netwoks mechanism according to P1 UpAnd P1 DownThe dispatch command value issued.
The control device includes the second determination unit, and second determination unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the second operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTrack P2 UH-i；
Wherein,For the active power of photo-thermal power station under the second operating status,For dispatching of power netwoks mechanism according to And H2The dispatch command value issued.
The control device includes third determination unit, and the third determination unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium3 eTrack P3 UDH-i；
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium3 eTracking
Wherein,It is dispatching of power netwoks mechanism according to P3 Up、P3 DownAnd H3The dispatch command value issued.
The control device includes the 4th determination unit, and the 4th determination unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status exists In range, by the heat release flow control for reducing heat transfer mediumTrackingWherein,For dispatching of power netwoks mechanism root According toThe dispatch command value issued.
4th determination unit also particularly useful for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsModel In enclosing, condenser is defocused by the mirror station control system in light and heat collection system, controls P3 eTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange Interior, condenser is focused by the mirror station control system in the light and heat collection system, controls P3 eTracking
Wherein,For dispatching of power netwoks mechanism according toWithThe dispatch command value issued.
The control module includes the 5th control unit；
5th control unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium5 eTrack P5 UDH-i；
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status is [0, P5 Up] range It is interior, by the heat release flow control for increasing heat transfer mediumTracking
Wherein, P5 UDH-iIt is dispatching of power netwoks mechanism according to P5 Up、P5 DownAnd H5The dispatch command value issued.
Compared with the immediate prior art, technical solution provided by the invention is had the advantages that
Photo-thermal power station provided by the invention participates in peak load regulation network control method, first obtains the operating status of photo-thermal power station, And the peak capacity of photo-thermal power station is determined based on operating status；Then the peak capacity of photo-thermal power station is reported into dispatching of power netwoks machine Structure, and receive the peak regulation instruction value that dispatching of power netwoks mechanism issues；Finally based on peak regulation instruction value, photo-thermal power station peak capacity and Operating status controls the active power of Turbo-generator Set in photo-thermal power station, reduces electric system cost of investment, saves energy Source, and can guarantee the safe and stable operation of power grid；
It includes true module, communication module and control mould that photo-thermal power station provided by the invention, which participates in peak load regulation network control device, Block, determining module are used to obtain the operating status of photo-thermal power station, and the peak capacity of photo-thermal power station is determined based on operating status；It is logical Letter module is used to the peak capacity of photo-thermal power station reporting dispatching of power netwoks mechanism, and receives the peak regulation that dispatching of power netwoks mechanism issues and refer to Enable value；Control module, for based on peak regulation instruction value, photo-thermal power station peak capacity and operating status control photo-thermal power station in vapour The active power of turbine generator group reduces electric system cost of investment, saves the energy, and can guarantee that the safety of power grid is steady Fixed operation；
The peak capacity and/or heat accumulation that photo-thermal power station is determined based on operating status that technical solution provided by the invention determines It is that the peak regulation instruction value that dispatching of power netwoks mechanism provides provides foundation that system, which maintains the photo-thermal power station rated power operation duration,；
Technical solution provided by the invention realizes photo-thermal power station and rings under different operating statuses by self generating ability Peak regulation instruction value is answered, provides support to solar power generation responsive electricity grid peak regulation demand；
Technical solution provided by the invention is conducive to photo-thermal power generation safety grid-connection and Optimized Operation, to improve photo-thermal power station Technical Economy provides reliable basis；
Technical solution provided by the invention is applicable not only to tower photo-thermal power station and slot type photo-thermal power station, applies also for Fei Nie That formula photo-thermal power station.
Detailed description of the invention
Fig. 1 is that photo-thermal power station participates in peak load regulation network control method flow chart in the embodiment of the present invention 1；
Fig. 2 is that photo-thermal power station participates in peak load regulation network control method flow chart under first operating status in the embodiment of the present invention 1；
Fig. 3 is that photo-thermal power station participates in peak load regulation network control method flow chart under second operating status in the embodiment of the present invention 1；
Fig. 4 is that photo-thermal power station participates in peak load regulation network control method flow chart under third operating status in the embodiment of the present invention 1；
Fig. 5 is that photo-thermal power station participates in peak load regulation network control method flow chart under the 4th operating status in the embodiment of the present invention 1；
Fig. 6 is that photo-thermal power station participates in peak load regulation network control method flow chart under the 5th operating status in the embodiment of the present invention 1.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment 1
The embodiment of the present invention 1 provides a kind of photo-thermal power station participation peak load regulation network control method, specific flow chart such as Fig. 1 institute Show, detailed process is as follows:
S101: obtaining the operating status of photo-thermal power station, and the peak capacity of photo-thermal power station is determined based on operating status；
S102: reporting dispatching of power netwoks mechanism for the peak capacity of photo-thermal power station, and receives the tune that dispatching of power netwoks mechanism issues Peak instruction value；
S103: based on steamer hair in peak regulation instruction value, the peak capacity of photo-thermal power station and operating status control photo-thermal power station The active power of motor group.
Above-mentioned photo-thermal power station includes light and heat collection system, steam generating system, Turbo-generator Set and heat reservoir；
Under first operating status, the second operating status, third operating status, the 4th operating status and the 5th operating status It is as shown in Figures 2 to 6 that photo-thermal power station participates in peak load regulation network control method flow chart difference.
The operating status obtained in above-mentioned S101 includes the first operating status, the second operating status, third operating status, the Four operating statuses and the 5th operating status.
First operating status includes:
Light and heat collection system is heated the heat transfer medium to operating temperature, and heat transfer medium enters steam generating system, steam Generating system heats water supply by heat transfer medium, and the superheated steam of generation is delivered to turbine LP rotors；
Second operating status includes:
Light and heat collection system is heated the heat transfer medium to operating temperature, and heat transfer medium enters heat reservoir；
Third operating status includes:
The high-temperature heat-storage medium of heat reservoir release enters steam generating system, and steam generating system is situated between by high-temperature heat-storage Matter heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set；
4th operating status includes:
When practical direct sunlight irradiation level, which is more than or equal to photo-thermal power station, presets direct projection irradiation level, light and heat collection system will be passed After thermal medium is heated to operating temperature, heat transfer medium a part enters steam generating system, and steam generating system is situated between by heat transfer Matter heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set, and heat transfer medium another part enters heat reservoir；
5th operating status includes:
When direct sunlight irradiation level actual value, which is less than photo-thermal power station, presets direct projection irradiation level, light and heat collection system and heat accumulation System discharges heat transfer medium simultaneously, and heat transfer medium enters steam generating system, steam generating system by heat transfer medium heat to Water, and the superheated steam of generation is delivered to Turbo-generator Set.
In above-mentioned S101, the peak capacity of photo-thermal power station is determined based on the first operating status, detailed process is as follows:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
It is specific as follows:
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the first operating status under photo-thermal power station Peak capacity, P1 eFor the active power of photo-thermal power station under the first operating status, δ is minimum technology power factor,For steamer The maximum power of generating set.
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity, upper peak capacity determine as the following formula:
Wherein, P1 UpWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station it is upper Peak capacity；For the active power of photo-thermal power station maximum power tracing under current direct sunlight irradiation level, P1 eFor the first fortune The active power of photo-thermal power station under row state；
Lower peak capacity determines as the following formula:
Wherein, P1 DownWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status under photo-thermal power station Peak capacity, δ are minimum technology power factor,For the maximum power of Turbo-generator Set.
In above-mentioned S101, the peak capacity of photo-thermal power station is determined based on the second operating status, detailed process is as follows:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the second operating status,For the maximum of Turbo-generator Set Power；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H2The photo-thermal power station rated power operation duration is maintained for heat reservoir under the second operating status；For The minimum heat storage capacity of heat reservoir；η is energy conversion efficiency of the steam generating system to Turbo-generator Set；For heat accumulation The exothermic maximum power of system；For heat reservoir accumulation of heat t2Quantity of heat storage after hour, and For storage The accumulation of heat power of hot systems, t2For the thermal storage time of heat reservoir.
In above-mentioned S101, the peak capacity of photo-thermal power station is determined based on third operating status, detailed process is as follows:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status,For the maximum of Turbo-generator Set Power, P3 eFor the active power of photo-thermal power station under third operating status；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein, P3 DownFor the upper peak capacity of photo-thermal power station under third operating status, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H3The photo-thermal power station rated power operation duration is maintained for heat reservoir under third operating status；For The minimum heat storage capacity of heat reservoir；For the exothermic maximum power of heat reservoir；η is steam generating system to turbine generator The energy conversion efficiency of unit；W3 TSFor heat reservoir heat release t3Quantity of heat storage after hour, and hFLHFor the specified heat accumulation duration of heat reservoir, t3For the Exotherm Time of heat reservoir under third operating status.
In above-mentioned S101, the peak capacity of photo-thermal power station is determined based on the 4th operating status, detailed process is as follows:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
It is specific as follows:
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the 4th operating status under photo-thermal power station Peak capacity,For the active power of photo-thermal power station under the 4th operating status,For the maximum power of Turbo-generator Set, δ For minimum technology power factor.
When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity, upper peak capacity determine as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station it is upper Peak capacity,For the active power of photo-thermal power station under the 4th operating status；
Lower peak capacity determines as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status under photo-thermal power station Peak capacity,For the maximum power of Turbo-generator Set, δ is minimum technology power factor.
In above-mentioned S101, the peak capacity of photo-thermal power station is determined based on the 5th operating status, detailed process is as follows:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the 5th operating status,For photo-thermal electricity under the 5th operating status The active power stood,For the maximum power of Turbo-generator Set；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein, P5 DownFor the lower peak capacity of photo-thermal power station under the 5th operating status,For the maximum of Turbo-generator Set Power, δ are minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H5The photo-thermal power station rated power operation duration is maintained for heat reservoir under the 5th operating status,For The maximum heat storage capacity of heat reservoir,For the minimum heat storage capacity of heat reservoir, t5For heat reservoir under the 5th operating status Exotherm Time, P5 TS-dFor the heat release power of heat reservoir,For the exothermic maximum power of heat reservoir；η is steam generation Energy conversion efficiency of the system to Turbo-generator Set.
In above-mentioned S103, photo-thermal power station is controlled based on peak regulation instruction, the peak capacity of photo-thermal power station and the first operating status The active power of middle Turbo-generator Set, detailed process is as follows:
In the case of photo-thermal power station is using maximal power tracing control:
WhenWhen, the active power variable quantity based on photo-thermal power station under the first operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
In the case of photo-thermal power station does not use maximal power tracing control:
Work as P1 e> P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrack P1 UD-i；
Work as P1 e< P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTrack P1 UD-i；
Wherein, P1 UD-iIt is dispatching of power netwoks mechanism according to P1 UpAnd P1 DownThe dispatch command value issued.
In above-mentioned S103, photo-thermal power station is controlled based on peak regulation instruction, the peak capacity of photo-thermal power station and the second operating status The active power of middle Turbo-generator Set, detailed process is as follows:
WhenWhen, the active power variable quantity based on photo-thermal power station under the second operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTracking
Wherein,For the active power of photo-thermal power station under the second operating status,For dispatching of power netwoks mechanism according to And H2The dispatch command value issued.
In above-mentioned S103, photo-thermal power station is controlled based on peak regulation instruction, the peak capacity of photo-thermal power station and third operating status The active power of middle Turbo-generator Set, detailed process is as follows:
Work as P3 e> P3 UDH-iWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium3 eTrack P3 UDH-i；
Work as P3 e< P3 UDH-iWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium3 eTrack P3 UDH-i；
Wherein,It is dispatching of power netwoks mechanism according to P3 Up、And H3The dispatch command value issued.
In above-mentioned S103, photo-thermal power station is controlled based on peak regulation instruction, the peak capacity of photo-thermal power station and the 4th operating status The active power of middle Turbo-generator Set, detailed process is as follows:
In the case of photo-thermal power station is using maximal power tracing control:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status exists In range, by the heat release flow control for reducing heat transfer mediumTrackingWherein,For dispatching of power netwoks mechanism root According toThe dispatch command value issued.
Photo-thermal power station does not use in the case of maximal power tracing control:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange It is interior, condenser is defocused by the mirror station control system in light and heat collection system, controls P3 eTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange Interior, condenser is focused by the mirror station control system in light and heat collection system, controls P3 eTracking
Wherein,For dispatching of power netwoks mechanism according toWithThe dispatch command value issued.
In above-mentioned S103, photo-thermal power station is controlled based on peak regulation instruction, the peak capacity of photo-thermal power station and the 5th operating status The active power of middle Turbo-generator Set, detailed process is as follows:
Work as P5 e> P5 UDH-iWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status is [0, P5 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium5 eTrack P5 UDH-i；
Work as P5 e< P5 UDH-iWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsRange It is interior, by the heat release flow control P for increasing heat transfer medium5 eTracking
Wherein,It is dispatching of power netwoks mechanism according to P5 Up、And H5The dispatch command value issued.
Embodiment 2
Based on the same inventive concept, the embodiment of the present invention 2 also provides a kind of photo-thermal power station participation peak load regulation network control device, Including determining module, communication module and control module, the function of above-mentioned several modules is described in detail below:
Determining module for obtaining the operating status of photo-thermal power station, and determines based on operating status the peak regulation of photo-thermal power station Capacity；
Communication module for the peak capacity of photo-thermal power station to be reported dispatching of power netwoks mechanism, and receives dispatching of power netwoks mechanism The peak regulation instruction value issued；
Control module, for peak capacity and operating status control photo-thermal power station based on peak regulation instruction value, photo-thermal power station The active power of middle Turbo-generator Set.
Above-mentioned photo-thermal power station includes light and heat collection system, steam generating system, Turbo-generator Set and heat reservoir；
Above-mentioned determining module includes acquiring unit, and the operating status that acquiring unit obtains includes the first operating status, second Operating status, third operating status, the 4th operating status and the 5th operating status.
Above-mentioned determining module further includes the first determination unit, and the first determination unit includes:
First judging unit, for judging whether photo-thermal power station uses maximal power tracing to control；
First computing unit, for calculating the downward of photo-thermal power station when photo-thermal power station is controlled using maximal power tracing Peak capacity；When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
Photo-thermal power station is calculated as follows when photo-thermal power station is controlled using maximal power tracing in the first above-mentioned computing unit Lower peak capacity:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the first operating status under photo-thermal power station Peak capacity, P1 eFor the active power of photo-thermal power station under the first operating status, δ is minimum technology power factor,For steamer The maximum power of generating set.
Above-mentioned first computing unit determines that upper peak regulation holds when photo-thermal power station does not use maximal power tracing to control as the following formula Amount:
Wherein, P1 UpWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station it is upper Peak capacity；For the active power of photo-thermal power station maximum power tracing under current direct sunlight irradiation level, P1 eFor the first fortune The active power of photo-thermal power station under row state；
Lower peak capacity is determined as the following formula:
Wherein, P1 DownWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status under photo-thermal power station Peak capacity, δ are minimum technology power factor,For the maximum power of Turbo-generator Set.
Above-mentioned determining module includes the second determination unit, and the upper peak regulation of photo-thermal power station is calculated as follows in the second determination unit Capacity:
Wherein,For the upper peak capacity of photo-thermal power station under the second operating status,For the maximum of Turbo-generator Set Power；
And heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H2The photo-thermal power station rated power operation duration is maintained for heat reservoir under the second operating status；For The minimum heat storage capacity of heat reservoir；η is energy conversion efficiency of the steam generating system to Turbo-generator Set；For heat accumulation The exothermic maximum power of system；For heat reservoir accumulation of heat t2Quantity of heat storage after hour, andFor storage The accumulation of heat power of hot systems, t2For the thermal storage time of heat reservoir.
Above-mentioned determining module includes third determination unit, and the upper peak regulation of photo-thermal power station is calculated as follows in third determination unit Capacity:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status,For the maximum of Turbo-generator Set Power, P3 eFor the active power of photo-thermal power station under third operating status；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein, P3 DownFor the upper peak capacity of photo-thermal power station under third operating status, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H3The photo-thermal power station rated power operation duration is maintained for heat reservoir under third operating status；For The minimum heat storage capacity of heat reservoir；For the exothermic maximum power of heat reservoir；η is steam generating system to turbine generator The energy conversion efficiency of unit；W3 TSFor heat reservoir heat release t3Quantity of heat storage after hour, and hFLHFor the specified heat accumulation duration of heat reservoir, t3For the Exotherm Time of heat reservoir under third operating status.
Determining module includes the 4th determination unit, and the 4th determination unit includes:
Second judgment unit, for judging whether photo-thermal power station uses maximal power tracing to control；
Second computing unit, for calculating the downward of photo-thermal power station when photo-thermal power station is controlled using maximal power tracing Peak capacity；When photo-thermal power station does not use maximal power tracing to control, upper peak capacity and the downward of photo-thermal power station are calculated separately Peak capacity.
The downward of photo-thermal power station is calculated as follows when photo-thermal power station is controlled using maximal power tracing in second computing unit Peak capacity:
Wherein,When being controlled for photo-thermal power station using maximal power tracing under the 4th operating status under photo-thermal power station Peak capacity,For the active power of photo-thermal power station under the 4th operating status,For the maximum power of Turbo-generator Set, δ For minimum technology power factor.
Second computing unit determines upper peak capacity when photo-thermal power station does not use maximal power tracing to control as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station it is upper Peak capacity,For the active power of photo-thermal power station under the 4th operating status；
Lower peak capacity is determined as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status under photo-thermal power station Peak capacity,For the maximum power of Turbo-generator Set, δ is minimum technology power factor.
Above-mentioned determining module includes the 5th determination unit, and the upper peak regulation that photo-thermal power station is calculated as follows in the 5th determination unit holds Amount:
Wherein,For the upper peak capacity of photo-thermal power station under the 5th operating status, P5 eFor photo-thermal electricity under the 5th operating status The active power stood,For the maximum power of Turbo-generator Set；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the lower peak capacity of photo-thermal power station under the 5th operating status,Most for Turbo-generator Set High-power, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H5The photo-thermal power station rated power operation duration is maintained for heat reservoir under the 5th operating status,For The maximum heat storage capacity of heat reservoir,For the minimum heat storage capacity of heat reservoir, t5For heat reservoir under the 5th operating status Exotherm Time,For the heat release power of heat reservoir,For the exothermic maximum power of heat reservoir；η is steam generation Energy conversion efficiency of the system to Turbo-generator Set.
Above-mentioned control module includes first control unit, and first control unit uses maximal power tracing control in photo-thermal power station In the case of system:
WhenWhen, the active power variable quantity based on photo-thermal power station under the first operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
First control unit is not when photo-thermal power station uses maximal power tracing control:
Work as P1 e> P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium1 eTrack P1 UD-i；
Work as P1 e< P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTrack P1 UD-i；
Wherein, P1 UD-iIt is dispatching of power netwoks mechanism according to P1 UpAnd P1 DownThe dispatch command value issued.
Above-mentioned control device includes the second determination unit, and the second determination unit is specifically used for:
WhenWhen, the active power variable quantity based on photo-thermal power station under the second operating status is [0, P1 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium1 eTracking
Wherein,For the active power of photo-thermal power station under the second operating status,For dispatching of power netwoks mechanism according toWith H2The dispatch command value issued.
Above-mentioned control device includes third determination unit, and third determination unit is specifically used for:
Work as P3 e> P3 UDH-iWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Down] model In enclosing, by the heat release flow control P for reducing heat transfer medium3 eTrack P3 UDH-i；
Work as P3 e< P3 UDH-iWhen, the active power variable quantity based on photo-thermal power station under third operating status is [0, P3 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium3 eTrack P3 UDH-i；
Wherein, P3 UDH-iIt is dispatching of power netwoks mechanism according to P3 Up、P3 DownAnd H3The dispatch command value issued.
Above-mentioned control device includes the 4th determination unit, and the 4th determination unit uses maximal power tracing control in photo-thermal power station In the case of system:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status exists In range, by the heat release flow control for reducing heat transfer mediumTrackingWherein,For dispatching of power netwoks mechanism root According toThe dispatch command value issued.
4th determination unit is not when photo-thermal power station uses maximal power tracing control:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsModel In enclosing, condenser is defocused by the mirror station control system in light and heat collection system, controls P3 eTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange Interior, condenser is focused by the mirror station control system in light and heat collection system, controls P3 eTracking
Wherein,For dispatching of power netwoks mechanism according toWithThe dispatch command value issued.
Above-mentioned control module includes the 5th control unit, and the 5th control unit is specifically used for:
Work as P5 e> P5 UDH-iWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsModel In enclosing, by the heat release flow control P for reducing heat transfer medium5 eTrack P5 UDH-i；
Work as P5 e< P5 UDH-iWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status is [0, P5 Up] range It is interior, by the heat release flow control P for increasing heat transfer medium5 eTracking
Wherein, P5 UDH-iIt is dispatching of power netwoks mechanism according to P5 Up、And H5The dispatch command value issued.
For convenience of description, each section of apparatus described above is divided into various modules with function or unit describes respectively. Certainly, each module or the function of unit can be realized in same or multiple softwares or hardware when implementing the application.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates, Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one The step of function of being specified in a box or multiple boxes.
Finally it should be noted that: the above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof, institute The those of ordinary skill in category field can still modify to a specific embodiment of the invention referring to above-described embodiment or Equivalent replacement, these are applying for this pending hair without departing from any modification of spirit and scope of the invention or equivalent replacement Within bright claims.

Claims (20)

1. a kind of photo-thermal power station participates in peak load regulation network control method characterized by comprising
The operating status of photo-thermal power station is obtained, and determines the peak capacity of photo-thermal power station based on the operating status；
The peak capacity of photo-thermal power station is reported into dispatching of power netwoks mechanism, and receives the peak regulation instruction value that dispatching of power netwoks mechanism issues；
Based on Turbo-generator Set in the peak regulation instruction value, the peak capacity of photo-thermal power station and operating status control photo-thermal power station Active power.
2. photo-thermal power station according to claim 1 participates in peak load regulation network control method, which is characterized in that the photo-thermal power station Including light and heat collection system, steam generating system, Turbo-generator Set and heat reservoir；
The operating status includes the first operating status, the second operating status, third operating status, the 4th operating status and the 5th Operating status.
3. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that first operation State includes:
The light and heat collection system is heated the heat transfer medium to operating temperature, and the heat transfer medium enters steam generating system, The steam generating system heats water supply by heat transfer medium, and the superheated steam of generation is delivered to turbine LP rotors；
Second operating status includes:
The light and heat collection system is heated the heat transfer medium to operating temperature, and the heat transfer medium enters heat reservoir；
The third operating status includes:
The high-temperature heat-storage medium of the heat reservoir release enters steam generating system, and the steam generating system is stored up by high temperature Thermal medium heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set；
4th operating status includes:
When practical direct sunlight irradiation level, which is more than or equal to photo-thermal power station, presets direct projection irradiation level, the light and heat collection system will be passed After thermal medium is heated to operating temperature, described heat transfer medium a part enters steam generating system, and the steam generating system is logical Heat transfer medium heating water supply is crossed, and the superheated steam of generation is delivered to Turbo-generator Set, described heat transfer medium another part Into heat reservoir；
5th operating status includes:
When direct sunlight irradiation level actual value, which is less than photo-thermal power station, presets direct projection irradiation level, the light and heat collection system and heat accumulation System discharges heat transfer medium simultaneously, and the heat transfer medium enters steam generating system, and the steam generating system is situated between by heat transfer Matter heats water supply, and the superheated steam of generation is delivered to Turbo-generator Set.
4. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that based on the first operation State determines the peak capacity of photo-thermal power station, comprising:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, the upper peak capacity and lower peak regulation for calculating separately photo-thermal power station hold Amount.
5. photo-thermal power station according to claim 4 participates in peak load regulation network control method, which is characterized in that when photo-thermal power station is adopted When being controlled with maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,It is photo-thermal power station using the lower peak regulation of photo-thermal power station under the first operating status when maximal power tracing control Capacity, P1 eFor the active power of photo-thermal power station under the first operating status, δ is minimum technology power factor,For turbine generator The maximum power of unit.
6. photo-thermal power station according to claim 4 participates in peak load regulation network control method, which is characterized in that when photo-thermal power station not When controlling using maximal power tracing, the upper peak capacity and lower peak capacity of photo-thermal power station are calculated separately, comprising:
The upper peak capacity determines as the following formula:
Wherein, P1 UpWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station upper peak regulation Capacity；For the active power of photo-thermal power station maximum power tracing under current direct sunlight irradiation level, P1 eFor the first operation shape The active power of photo-thermal power station under state；
The lower peak capacity determines as the following formula:
Wherein, P1 DownWhen maximal power tracing not being used to control for photo-thermal power station under the first operating status photo-thermal power station lower peak regulation Capacity, δ are minimum technology power factor,For the maximum power of Turbo-generator Set.
7. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that based on the second operation State determines the peak capacity of photo-thermal power station, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the second operating status,For the maximum power of Turbo-generator Set；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H2The photo-thermal power station rated power operation duration is maintained for heat reservoir under the second operating status；For heat accumulation The minimum heat storage capacity of system；η is energy conversion efficiency of the steam generating system to Turbo-generator Set；For heat reservoir Exothermic maximum power；For heat reservoir accumulation of heat t2Quantity of heat storage after hour, and For heat accumulation system The accumulation of heat power of system, t2For the thermal storage time of heat reservoir.
8. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that run based on third State determines the peak capacity of photo-thermal power station, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status,For the maximum power of Turbo-generator Set, P3 eFor the active power of photo-thermal power station under third operating status；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under third operating status, δ is minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H3The photo-thermal power station rated power operation duration is maintained for heat reservoir under third operating status；For heat accumulation The minimum heat storage capacity of system；For the exothermic maximum power of heat reservoir；η is steam generating system to Turbo-generator Set Energy conversion efficiency；W3 TSFor heat reservoir heat release t3Quantity of heat storage after hour, andhFLHFor The specified heat accumulation duration of heat reservoir, t3For the Exotherm Time of heat reservoir under third operating status.
9. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that based on the 4th operation State determines the peak capacity of photo-thermal power station, comprising:
Judge whether photo-thermal power station uses maximal power tracing to control；
When photo-thermal power station is controlled using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated；
When photo-thermal power station does not use maximal power tracing to control, the upper peak capacity and lower peak regulation for calculating separately photo-thermal power station hold Amount.
10. photo-thermal power station according to claim 9 participates in peak load regulation network control method, which is characterized in that work as photo-thermal power station When controlling using maximal power tracing, the lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,It is photo-thermal power station using the lower peak regulation of photo-thermal power station under the 4th operating status when maximal power tracing control Capacity,For the active power of photo-thermal power station under the 4th operating status,For the maximum power of Turbo-generator Set, δ is most Small technology power factor.
11. photo-thermal power station according to claim 9 participates in peak load regulation network control method, which is characterized in that work as photo-thermal power station When not using maximal power tracing control, the upper peak capacity and lower peak capacity of photo-thermal power station are calculated separately, comprising:
The upper peak capacity determines as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station upper peak regulation Capacity,For the active power of photo-thermal power station under the 4th operating status；
The lower peak capacity determines as the following formula:
Wherein,When maximal power tracing not being used to control for photo-thermal power station under the 4th operating status photo-thermal power station lower peak regulation Capacity,For the maximum power of Turbo-generator Set, δ is minimum technology power factor.
12. photo-thermal power station according to claim 2 participates in peak load regulation network control method, which is characterized in that based on the 5th fortune Row state determines the peak capacity of photo-thermal power station, comprising:
The upper peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the upper peak capacity of photo-thermal power station under the 5th operating status,For photo-thermal power station under the 5th operating status Active power,For the maximum power of Turbo-generator Set；
The lower peak capacity of photo-thermal power station is calculated as follows:
Wherein,For the lower peak capacity of photo-thermal power station under the 5th operating status,For the maximum work of Turbo-generator Set Rate, δ are minimum technology power factor；
Heat reservoir is calculated as follows and maintains the photo-thermal power station rated power operation duration:
Wherein, H5The photo-thermal power station rated power operation duration is maintained for heat reservoir under the 5th operating status,For heat accumulation The maximum heat storage capacity of system,For the minimum heat storage capacity of heat reservoir, t5It is put for heat reservoir under the 5th operating status The hot time,For the heat release power of heat reservoir,For the exothermic maximum power of heat reservoir；η is steam generating system To the energy conversion efficiency of Turbo-generator Set.
13. photo-thermal power station according to claim 5 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the first operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under the first operating status existsRange It is interior, by the heat release flow control P for reducing heat transfer medium1 eTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
14. photo-thermal power station according to claim 6 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the first operating status control photo-thermal power station, Further include:
Work as P1 e> P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Down] in range, By the heat release flow control P for reducing heat transfer medium1 eTrack P1 UD-i；
Work as P1 e< P1 UD-iWhen, the active power variable quantity based on photo-thermal power station under the first operating status is [0, P1 Up] in range, lead to Cross the heat release flow control P for increasing heat transfer medium1 eTrack P1 UD-i；
Wherein, P1 UD-iIt is dispatching of power netwoks mechanism according to P1 UpAnd P1 DownThe dispatch command value issued.
15. photo-thermal power station according to claim 7 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the second operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under the second operating status is [0, P1 Up] in range, lead to Cross the heat release flow control P for increasing heat transfer medium1 eTracking
Wherein,For the active power of photo-thermal power station under the second operating status,For dispatching of power netwoks mechanism according toAnd H2Under The dispatch command value of hair.
16. photo-thermal power station according to claim 8 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and third operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status existsIn range, By the heat release flow control for reducing heat transfer mediumTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under third operating status existsIn range, By the heat release flow control for increasing heat transfer mediumTracking
Wherein,For dispatching of power netwoks mechanism according toAnd H3The dispatch command value issued.
17. photo-thermal power station according to claim 10 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the 4th operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsRange It is interior, by the heat release flow control for reducing heat transfer mediumTrackingWherein,For dispatching of power netwoks mechanism according toThe dispatch command value issued.
18. photo-thermal power station according to claim 11 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the 4th operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsIn range, Condenser is defocused by the mirror station control system in light and heat collection system, is controlledTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 4th operating status existsIn range, institute Condenser is focused by the mirror station control system stated in light and heat collection system, controlTracking
Wherein,For dispatching of power netwoks mechanism according toWithThe dispatch command value issued.
19. photo-thermal power station according to claim 12 participates in peak load regulation network control method, which is characterized in that be based on the tune The active power of Turbo-generator Set in peak instruction, the peak capacity of photo-thermal power station and the 5th operating status control photo-thermal power station, Include:
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsIn range, By the heat release flow control for reducing heat transfer mediumTracking
WhenWhen, the active power variable quantity based on photo-thermal power station under the 5th operating status existsIn range, By the heat release flow control for increasing heat transfer mediumTracking
Wherein,For dispatching of power netwoks mechanism according toAnd H5The dispatch command value issued.
20. a kind of photo-thermal power station participates in peak load regulation network control device characterized by comprising
Determining module for obtaining the operating status of photo-thermal power station, and determines based on the operating status peak regulation of photo-thermal power station Capacity；
Communication module for the peak capacity of photo-thermal power station to be reported dispatching of power netwoks mechanism, and receives dispatching of power netwoks mechanism and issues Peak regulation instruction value；
Control module, for peak capacity and operating status control photo-thermal power station based on the peak regulation instruction value, photo-thermal power station The active power of middle Turbo-generator Set.
CN201810877620.1A 2018-08-03 2018-08-03 Method and device for controlling photo-thermal power station to participate in power grid peak regulation Active CN109340065B (en)

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