CN107561994A - A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction - Google Patents
A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction Download PDFInfo
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- CN107561994A CN107561994A CN201610515280.9A CN201610515280A CN107561994A CN 107561994 A CN107561994 A CN 107561994A CN 201610515280 A CN201610515280 A CN 201610515280A CN 107561994 A CN107561994 A CN 107561994A
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- cloud layer
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Abstract
The present invention provides a kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction, including：All-sky imaging unit, cloud layer predicting unit, weather station and station control unit；The station control unit is connected with the weather station, the cloud layer predicting unit and slot type photo-thermal power station；The cloud layer predicting unit is also connected with all-sky imaging unit.The present invention realizes monitoring integrated to slot type photo-thermal power station, control and management, is integrated with cloud layer predicting unit, avoids the power station operation fluctuation caused by cloud cover solar irradiation, it is ensured that the safe and reliable operation in slot type photo-thermal power station.
Description
Technical field
The present invention relates to power station automation control field, and in particular to a kind of slot type photo-thermal power station prison of combination cloud layer prediction
Control system.
Background technology
Slot type photo-thermal power generation focuses on the heat-absorbing medium in beam radia heating thermal-collecting tube using paraboloidal concentrator,
Conventional heat-absorbing medium is conduction oil, and highest can be warming up to 400 DEG C.Multigroup concentrator forms slot type Jing Chang, by substantial amounts of heat conduction
Oil is heated to the condition of high temperature, drives Steam Turbine to generate electricity for producing steam.
In slot type photo-thermal power station, the elementary object of system operation is slot type mirror field outlet guide hot oil temperature is reached design
Temperature, and mirror field outlet guide hot oil temperature is determined by many factors：Intensity of solar radiation, site environment temperature, wind speed, Jing Chang pipes
Road thermal inertia, mirror field entrance heat conduction oil temperature and heat transfer oil flow etc..There is plurality of operating modes in whole slot type photo-thermal power station：Except just
Outside regular operation mode, also start that start, obnubilation operating mode, night be standby, emergency shutdown isotype, the switching between multi-mode needs root
According to multiple input conditions, comprehensive descision is carried out by the control system of a Ge Quan factories, and cannot rely on operations staff to complex working condition
Make correct selection.
Tower photo-thermal power generation is that many large-sized solar speculums are housed on the place of very large area, commonly referred to as fixed
Solar eyepiece, every each all is equipped with follower and accurately focuses on sunshine reflection on the recipient at the top of one high tower.Connect
Concentration magnification on receiver can be more than 1000 times.The solar energy of absorption is changed into heat energy herein, then heat energy is transmitted to work
Matter, by accumulation of heat link, then heat power machine is inputted, expansion workmanship, drive generator, finally exported in the form of electric energy.
Compared to tower power station, slot type power station whole Jing Chang because conduction oil flows through, system thermal inertia is big, when there is cloud cover
When, acute variation will not occur immediately as tower power station for power station operating condition, but slowly respond this change.To tackle this
Kind of situation, the control system of full factory should can the influence of comprehensive analysis thermal inertia and meteorologic factor to whole electric power station system, really
Fixed suitable heat transfer oil flow.Existing [B of CN 103513295] and [B of CN 102915040] number Chinese patent technology, it is main
With on tower power station and on photovoltaic plant, monitor and predict cloud layer, it is therefore desirable to a kind of technical scheme is provided and meets slot type
The needs in power station.
The content of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention provides a kind of slot type photo-thermal monitoring power station of combination cloud layer prediction
System, the system can be applied to large-scale slot type photo-thermal power station, monitor cloud layer and power station operating condition in real time, photo-thermal power station is entered
Row remote operation, control and maintenance on the spot, optimization photo-thermal power station operation logic, is diagnosed and is commented to photo-thermal power station running status
Estimate, receive traffic department's control instruction, realize monitoring, control and management to photo-thermal power station, it is ensured that the safety in photo-thermal power station, can
It is the indispensable important component in slot type photo-thermal power station by operation.
Solution is used by realizing above-mentioned purpose：
A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction, the monitoring system include：All-sky imaging is single
Member, cloud layer predicting unit, weather station and station control unit；The station control unit and the weather station, the cloud layer are pre-
Unit is surveyed with slot type photo-thermal power station to be connected；The cloud layer predicting unit is also connected with all-sky imaging unit.
Preferably, the all-sky imaging unit monitors the cloud layer in slot type Jing Chang overhead by CCD camera group in real time, analysis
Judge number, position, shape and the height of cloud layer.
Further, the CCD camera group includes at least two CCD cameras；
Include bugeye lens and common lens in the CCD camera, and the ultra-wide angle visual angle of the bugeye lens can
Approach, meet or exceed 180 °.
Further, image processing apparatus receives the sky image that photographs of camera, according to the matching relationship between image, often
Same corresponding cloud layer of individual camera matching, the cloud level is calculated to the cloud layer for completing matching, including：Under synchronization, the sun exists
Image space is identical in two identicals and the parallel camera of primary optical axis, passes through the solar core position weight translated in two width pictures
It is parallel together in the next equivalent camera primary optical axis of same point, keep cloud layer position and sun relative position constant, with reference to cloud layer in difference
Magazine position, and ceiling of clouds is calculated according to binocular vision 3 D range measurement principle.
Further, cloud cluster number and location identification apparatus application corrosion and expansion algorithm carry out cloud cluster number in sky image
Mesh extraction identification, according to sky imaging region scope and ceiling of clouds, maps positional information of each cloud cluster in earth graticules.
Preferably, the meteorological ginseng that the cloud layer predicting unit is collected according to the parameters and weather station of observed cloud layer
Number, the direction of motion, the speed of cloud layer projection are calculated, predicts the change in shape of cloud layer, and its section, face are blocked to slot type Jing Chang
Product, estimated residence time.
Preferably, the weather station is used to collect all kinds of meteorologic parameters needed for the normal operation of slot type photo-thermal power station.
Preferably, the station control unit sends early warning before the into/out slot type mirror field of clouds layer shadow to Central Control Room
Signal, the master control valve using automatic or manual mode tuning by sky cloud effect section, thermal-collecting tube in reduction/increase respective regions
Interior fluid flow, and by being arranged on the temperature monitoring instrument fed-back fluid temperature data of mirror field pipe outlet, valve is adjusted in real time
Door aperture.
Compared with immediate prior art, technical scheme has the advantages that：
1) slot type photo-thermal Power Station Monitored Control System provided by the invention, realize it is integrated to slot type photo-thermal power station monitoring,
Control and management, are integrated with cloud layer predicting unit, avoid the power station operation fluctuation caused by cloud cover solar irradiation, it is ensured that
The safe and reliable operation in slot type photo-thermal power station.
2) slot type photo-thermal Power Station Monitored Control System provided by the invention, misoperation announcement can be provided by monitoring photo-thermal power station
Alert information；Warning message is provided by monitoring photo-thermal power station subsystem, during failure.
Brief description of the drawings
Fig. 1 is slot type photo-thermal power station principle assumption diagram provided by the invention；
Other subsidiary engines 6 of the Turbo-generator Set 5 of 1 slot type mirror field 2 heat reservoir, 3 steam generating system 4 are meteorological
Stand the cloud layer of 7 total sky imager, 8 cloud layer forecasting system, 9 power station control system, 10 dispatching of power netwoks 11.
Embodiment
The embodiment of the present invention is described in further detail below in conjunction with the accompanying drawings.
A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction, the monitoring system include：All-sky imaging is single
Member, cloud layer predicting unit, weather station and station control unit；The station control unit and the weather station, the cloud layer are pre-
Unit is surveyed with slot type photo-thermal power station to be connected；The cloud layer predicting unit is also connected with all-sky imaging unit.
The all-sky imaging unit monitors the cloud layer in slot type Jing Chang overhead by CCD camera group in real time, and analysis judges cloud
Number, position, shape and the height of layer.
The CCD camera group includes at least two CCD cameras；
Include bugeye lens and common lens in the CCD camera, and the ultra-wide angle visual angle of the bugeye lens can
Approach, meet or exceed 180 °.
Image processing apparatus receives the sky image that camera photographs, according to the matching relationship between image, each camera
With same corresponding cloud layer, the cloud level is calculated to the cloud layer for completing matching, including：Under synchronization, the sun is identical at two
And image space is identical in camera that primary optical axis is parallel, by translate the solar core position in two width pictures coincide with it is same
The next equivalent camera primary optical axis of point is parallel, keeps cloud layer position and sun relative position constant, with reference to cloud layer in different cameral
Position, and ceiling of clouds is calculated according to binocular vision 3 D range measurement principle.
Cloud cluster number and location identification apparatus application corrosion and expansion algorithm, which carry out cloud cluster number extraction in sky image, to be known
Not, according to sky imaging region scope and ceiling of clouds, positional information of each cloud cluster in earth graticules is mapped.
The meteorologic parameter that the cloud layer predicting unit is collected according to the parameters and weather station of observed cloud layer, calculate
The direction of motion, the speed of cloud layer projection, predict the change in shape of cloud layer, and its section, area are blocked to slot type Jing Chang, is expected to stop
Stay the time.
The weather station is used to collect all kinds of meteorologic parameters needed for the normal operation of slot type photo-thermal power station.
The station control unit sends pre-warning signal to Central Control Room, adopted before the into/out slot type mirror field of clouds layer shadow
Master control valve with automatic or manual mode tuning by sky cloud effect section, thermal-arrest tube fluid in reduction/increase respective regions
Flow, and by being arranged on the temperature monitoring instrument fed-back fluid temperature data of mirror field pipe outlet, valve opening is adjusted in real time.
As shown in Figure 1, slot type photo-thermal power station includes the turbine generator of 1 slot type mirror field 2 heat reservoir, 3 steam generating system 4
Other clouds of 6 weather station of subsidiary engine, 7 all-sky imaging system, 8 cloud layer forecasting system, 9 power station control system, 10 dispatching of power netwoks 11 of unit 5
Layer.
Wherein, the slot type Jing Chang includes slot-type optical collector, thermal-collecting tube and heat-absorbing medium, and heat-absorbing medium is usually heat conduction
Oil, water or fused salt etc..If heat-absorbing medium is conduction oil or fused salt, when solar radiation abundance on daytime, slot type Jing Chang passes through remittance
By heat-absorbing medium from low-temperature heat to high temperature, on the one hand high temperature endothermic medium exchanges heat and produces the steaming of HTHP poly- sunshine with water
Vapour promotes Turbo-generator Set to generate electricity, and on the other hand exchanges heat and is stored in high-temperature heat-storage tank with heat-storage medium, realizes heat
Storage；When the sun set or during night, high-temperature heat-storage medium is exchanged heat with low temperature heat-absorbing medium, and low temperature heat-absorbing medium is heated to be into height
Temperature, high temperature endothermic medium produces the steam of HTHP with water heat exchange, so as to promote Turbo-generator Set to generate electricity, realizes that night is sent out
Electricity.If heat-absorbing medium is water, slot type Jing Chang directly heats into water the steam of HTHP, promotes Turbo-generator Set hair
Electricity.
One typical slot type photo-thermal power station is mainly by the turbine generator of 1 slot type mirror field 2 heat reservoir, 3 steam generating system 4
Other subsidiary engines of unit 5 and 9 power station control systems composition.When there is solar irradiation, 1 slot type Jing Chang in power station starts to start,
Conduction oil flows in mirror field, is warming up to nearly 400 DEG C.A part of high temperature heat conductive oil, which enters in 2 heat reservoirs, plays heat storage
Come, another part conduction oil enters the steam that 3 steam generating systems produce HTHP, drives 4 Turbo-generator Sets to generate electricity, hair
The electric power gone out returns 10 dispatchings of power netwoks to use.When there is 11 cloud cover, the conduction oil heating rate in 1 slot type mirror field slows down even
Stop, now, the heat conduction in 1 slot type mirror field should be reduced by the regulation of 5 other subsidiary engines, such as heat conduction oil circulating pump equipment
Oil stream amount.When 11 cloud layers gradually move, from block 1 slot type Jing Chang taper to do not block when, 5 other subsidiary engine equipment such as heat conduction
Oil circulation etc. needs enlargement discharge to run, and prevents the conduction oil overtemperature in 1 slot type mirror field from going bad.
Because 1 slot type mirror field duct length is more than dozens of kilometres, whole 1 slot type Jing Chang thermal inertia is non-negligible.Such as
The real-time weather situation that fruit feeds back only in accordance with 6 weather stations, then Control of Power Plant certain deviation will occur.If it can sentence in advance
The position of cloud layer and its influence within following a period of time in disconnected sky, then 9 power station control systems can be according to 1 slot type Jing Chang
Real-time operating condition, the resistivity that thermal inertia of analyser field itself changes to meteorology, and then accurately control is provided and solved
Scheme.
Wherein, described cloud layer forecasting system includes 7 all-sky imaging systems and 8 cloud layer forecasting systems, can supervise in real time
The cloud layer in Jing Chang overhead is surveyed, prejudges the type of cloud layer to determine the transmitance of cloud layer, and according to the size and movement locus of cloud layer
Predict the direction of motion of cloud layer and the shielding rate to 1 slot type Jing Chang etc..When predicting Jing Chang overhead and cloud cover can occur, it is
Avoid the solar irradiation for projecting 1 slot type Jing Chang from being greatly lowered and cause the outlet temperature rapid drawdown of mirror field, 1 slot type can be reduced in advance
The flow of conduction oil in mirror field, its mirror field outlet guide hot oil temperature is set to reach design temperature；When cloud layer will leave 1 slot type Jing Chang
Upper space-time, cause mirror field outlet guide hot oil temperature to exceed design temperature to avoid solar irradiation from drastically raising, 1 groove can be increased in advance
The flow of conduction oil in formula mirror field, and aid in concentrator deflection to avoid heat transfer oil flow too low with a part or whole part defocus and lead
Cause overtemperature.
The control program of slot type photo-thermal Power Station Monitored Control System, real time meteorological data and cloud layer prediction based on weather station feedback
System, the meteorology and solar radiation data of following a period of time are prejudged, with reference to the dispatch command of power network dispatching system, and power station
The operating condition of each subsystem, comprehensive descision ensure power station even running.
Finally it should be noted that：Above example is merely to illustrate the technical scheme of the application rather than to its protection domain
Limitation, although the application is described in detail with reference to above-described embodiment, those of ordinary skill in the art should
Understand：Those skilled in the art read the embodiment of application can be still carried out after the application a variety of changes, modification or
Person's equivalent substitution, but these changes, modification or equivalent substitution, are applying within pending claims.
Claims (8)
1. a kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction, it is characterised in that the monitoring system includes：Whole day
Empty imaging unit, cloud layer predicting unit, weather station and station control unit；The station control unit and the weather station, institute
Cloud layer predicting unit is stated with slot type photo-thermal power station to be connected；The cloud layer predicting unit is also connected with all-sky imaging unit.
2. monitoring system as claimed in claim 1, it is characterised in that the all-sky imaging unit is real by CCD camera group
When monitor the cloud layer in slot type Jing Chang overhead, analysis judges number, position, shape and the height of cloud layer.
3. monitoring system as claimed in claim 2, it is characterised in that the CCD camera group includes at least two CCD cameras；
Include bugeye lens and common lens in the CCD camera, and the ultra-wide angle visual angle of the bugeye lens be close to,
Meet or exceed 180 °.
4. monitoring system as claimed in claim 2, it is characterised in that image processing apparatus receives the day empty graph that camera photographs
Picture, according to the matching relationship between image, same corresponding cloud layer of each camera matching, cloud is calculated to the cloud layer for completing matching
Height, including：Under synchronization, sun image space in two identicals and the parallel camera of primary optical axis is identical, passes through translation
Solar core position in two width pictures coincides with same point, and to carry out equivalent camera primary optical axis parallel, keeps cloud layer position and sun phase
It is constant to position, calculate ceiling of clouds with reference to position of the cloud layer in different cameral, and according to binocular vision 3 D range measurement principle.
5. monitoring system as claimed in claim 2, it is characterised in that cloud cluster number and location identification apparatus application corrosion and it is swollen
Swollen algorithm carries out cloud cluster number extraction identification in sky image, according to sky imaging region scope and ceiling of clouds, maps each cloud
Positional information of the group in earth graticules.
6. monitoring system as claimed in claim 1, it is characterised in that the cloud layer predicting unit is according to observed cloud layer
The meteorologic parameter that parameters and weather station are collected, the direction of motion, the speed of cloud layer projection are calculated, predict that the shape of cloud layer becomes
Change, and its section, area, estimated residence time are blocked to slot type Jing Chang.
7. monitoring system as claimed in claim 1, it is characterised in that the weather station is normal for collecting slot type photo-thermal power station
All kinds of meteorologic parameters needed for operation.
8. monitoring system as claimed in claim 1, it is characterised in that the station control unit clouds layer shadow entrance/from
Before open flume type mirror field, pre-warning signal is sent to Central Control Room, the master control using automatic or manual mode tuning by sky cloud effect section
Valve, fluid flow in thermal-collecting tube in reduction/increase respective regions, and by being arranged on the temperature monitor of mirror field pipe outlet
Table fed-back fluid temperature data, adjusts valve opening in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610515280.9A CN107561994A (en) | 2016-06-30 | 2016-06-30 | A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610515280.9A CN107561994A (en) | 2016-06-30 | 2016-06-30 | A kind of slot type photo-thermal Power Station Monitored Control System of combination cloud layer prediction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109116871A (en) * | 2018-09-30 | 2019-01-01 | 深圳东康前海新能源有限公司 | A kind of monitoring system in wide area field power station |
| CN112923585A (en) * | 2021-02-26 | 2021-06-08 | 中国电力工程顾问集团西北电力设计院有限公司 | Fused salt heat storage photo-thermal power station operation optimization system and method |
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| CN102915040A (en) * | 2012-10-15 | 2013-02-06 | 浙江工业大学 | Altostratus dynamic characteristic real-time monitoring device applied to solar power generation forecasting |
| CN103297526A (en) * | 2013-06-05 | 2013-09-11 | 四川艾普视达数码科技有限公司 | Real-time power station monitoring system |
| CN103513295A (en) * | 2013-09-25 | 2014-01-15 | 青海中控太阳能发电有限公司 | Weather monitoring system and method based on multi-camera real-time shoot and image processing |
| GB2521376A (en) * | 2013-12-17 | 2015-06-24 | Intellisense Io Ltd | System and method for securely managing data of industrial control systems |
| CN105371509A (en) * | 2015-11-23 | 2016-03-02 | 中国东方电气集团有限公司 | Heat tank control device, combined with weather prediction data, of groove type solar thermal electric power generation system |
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2016
- 2016-06-30 CN CN201610515280.9A patent/CN107561994A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915040A (en) * | 2012-10-15 | 2013-02-06 | 浙江工业大学 | Altostratus dynamic characteristic real-time monitoring device applied to solar power generation forecasting |
| CN103297526A (en) * | 2013-06-05 | 2013-09-11 | 四川艾普视达数码科技有限公司 | Real-time power station monitoring system |
| CN103513295A (en) * | 2013-09-25 | 2014-01-15 | 青海中控太阳能发电有限公司 | Weather monitoring system and method based on multi-camera real-time shoot and image processing |
| GB2521376A (en) * | 2013-12-17 | 2015-06-24 | Intellisense Io Ltd | System and method for securely managing data of industrial control systems |
| CN105371509A (en) * | 2015-11-23 | 2016-03-02 | 中国东方电气集团有限公司 | Heat tank control device, combined with weather prediction data, of groove type solar thermal electric power generation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109116871A (en) * | 2018-09-30 | 2019-01-01 | 深圳东康前海新能源有限公司 | A kind of monitoring system in wide area field power station |
| CN112923585A (en) * | 2021-02-26 | 2021-06-08 | 中国电力工程顾问集团西北电力设计院有限公司 | Fused salt heat storage photo-thermal power station operation optimization system and method |
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Application publication date: 20180109 |