CN111076433A - Heliostat control system for solar thermal power station - Google Patents
Heliostat control system for solar thermal power station Download PDFInfo
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- CN111076433A CN111076433A CN201911408700.3A CN201911408700A CN111076433A CN 111076433 A CN111076433 A CN 111076433A CN 201911408700 A CN201911408700 A CN 201911408700A CN 111076433 A CN111076433 A CN 111076433A
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- heliostat
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- data
- computing unit
- control system
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- 238000009434 installation Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
- F24S50/20—Arrangements for controlling solar heat collectors for tracking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/02—Cleaning by the force of jets or sprays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S50/00—Arrangements for controlling solar heat collectors
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D3/00—Control of position or direction
- G05D3/12—Control of position or direction using feedback
- G05D3/20—Control of position or direction using feedback using a digital comparing device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/47—Mountings or tracking
Abstract
The invention discloses a heliostat control system for a solar thermal power station, relates to the field of solar power generation, and aims to solve the problems of complex technical system and large calculated amount of the traditional heliostat, wherein the technical scheme is as follows: a heliostat; a network unit; the main control computing unit: receiving and storing real-time data of the sun tracking unit through the network unit; the singlechip computing unit: the sun tracking unit is arranged on each heliostat, stores accurate data of the longitude and latitude and the installation position of the heliostat, is connected with the central control computing unit, acquires real-time data of the sun tracking unit from the main control computing unit, and calculates the angle of the heliostat to be adjusted according to the real-time data; a hydraulic control drive unit: and the heliostat angle adjusting device is used for receiving adjusting data sent by the singlechip computing unit so as to adjust the angle of the heliostat. The heliostat control system for the solar photothermal power station has relatively independent control on each heliostat, and is small in calculation amount and high in accuracy of the host.
Description
Technical Field
The invention relates to the field of solar power generation, in particular to a heliostat control system for a solar thermal power station.
Background
In a tower type solar thermal power generation system, a heliostat is used for collecting solar radiation energy and converging the solar radiation energy to a heat collector, namely, the heliostat tracks the sun by rotating around a shaft and reflects the solar energy radiated to the surface of the heliostat to the heat collector at the top of a tower so as to fulfill the aim of light condensation. The core technical problem in the construction of the tower type solar thermal power station is how to control the heliostat to accurately and automatically track the rotation of the sun so as to maximize the solar energy radiated to the surface of the heliostat. Typically, a tower solar thermal power plant employs a plurality of heliostats. For example, a 150MW photo-thermal solar power plant has a total of 12,800 heliostats.
Most of the existing heliostat control systems adopt a centralized control system, namely, the pitch and deflection angles of each heliostat are respectively calculated by a main computer according to sun information obtained by a sun tracking system, then the pitch and deflection angle information of each heliostat is respectively transmitted to a corresponding heliostat controller, and finally the controller adjusts the angle of the heliostat according to an instruction. The mode of controlling the angle of the heliostat in such a way has extremely high requirements on the computing power and data transmission of a main computer, and is troublesome to maintain.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a heliostat control system for a solar thermal power station, wherein the deflection angle of each heliostat is controlled by arranging a single-chip microcomputer computing unit on each heliostat, so that the angle position of each heliostat is better ensured, the technical quantity of a host is reduced, the accuracy degree is high, and the stability is good.
The technical purpose of the invention is realized by the following technical scheme: a heliostat control system for a solar photothermal power station, comprising: a heliostat; a network unit: the system comprises a data acquisition module, a data transmission module, a data acquisition module and a data transmission module, wherein the data acquisition module is used for acquiring data of real-time movement locus of the sun from a network and transmitting the data; the main control computing unit: receiving and storing real-time data of the sun tracking unit through the network unit; the singlechip computing unit: the heliostat tracking control system is arranged on each heliostat, stores accurate data of the longitude and latitude and the installation position of the heliostat, is connected with a main control computing unit, acquires real-time data of a sun tracking unit from the main control computing unit, and calculates the angle of the heliostat to be adjusted according to the real-time data; a hydraulic control drive unit: and the heliostat angle adjusting device is used for receiving adjusting data sent by the singlechip computing unit so as to adjust the angle of the heliostat.
The invention is further configured to: the heliostat is provided with a pitch angle sensor and a deflection angle sensor, and the pitch angle sensor and the deflection angle sensor measure detection data, acquire the detection data by a singlechip computing unit and upload the detection data to a main control computing unit.
The invention is further configured to: the hydraulic control driving unit comprises a three-axis mechanical arm, and the three-axis mechanical arm is connected with the heliostat through a spherical connecting piece.
The invention is further configured to: and a plurality of hydraulic cylinders are arranged between the three-axis mechanical arm and the heliostat and used for adjusting the deflection angle of the heliostat.
The invention is further configured to: the single chip microcomputer computing unit is further provided with a storage unit, and the storage unit is used for storing recent heliostat angle change data.
The invention is further configured to: the heliostat is also provided with a plurality of light sensors, and the light sensors transmit detection data to the singlechip computing unit.
The invention is further configured to: the cleaning unit is connected to the single chip microcomputer computing unit and used for cleaning impurities on the surface of the heliostat at regular time.
The invention is further configured to: the cleaning unit comprises an automatic cleaning sprayer, the automatic cleaning sprayer is installed on the ground surface, and when the heliostat is driven to be over against the ground surface by the three-axis driver, the automatic cleaning sprayer sprays and washes.
In conclusion, the invention has the following beneficial effects:
1. the control system of each heliostat is relatively independent and is not interfered by other systems;
2. the deflection angle of each heliostat is calculated by the single chip microcomputer, so that the calculated amount of the host is reduced, the heliostats can be calculated and adjusted in real time, the accuracy is higher, and the efficiency of the power station is improved;
3. the hydraulic control driving unit continuously operates without frequent starting, so that the energy consumption is low and the investment is low;
4. the whole control system has uniform hardware, simple design, installation and maintenance and low cost;
5. the network transmission quantity is small, and the system is more reliable;
6. when there is not sunshine, the triaxial arm can put down the heliostat, better protection heliostat to can wash voluntarily.
Drawings
FIG. 1 is a logic diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
A heliostat control system for a solar photothermal power station, as shown in fig. 1, comprising: a heliostat; a network unit: the system comprises a data acquisition module, a data transmission module, a data acquisition module and a data transmission module, wherein the data acquisition module is used for acquiring data of real-time movement locus of the sun from a network and transmitting the data; the main control computing unit: receiving and storing real-time data of the sun tracking unit through the network unit; the singlechip computing unit: the heliostat tracking control system is arranged on each heliostat, stores accurate data of the longitude and latitude and the installation position of the heliostat, is connected with a main control computing unit, acquires real-time data of a sun tracking unit from the main control computing unit, and calculates the angle of the heliostat to be adjusted according to the real-time data; a hydraulic control drive unit: the heliostat angle adjusting device is used for receiving adjusting data sent by the singlechip computing unit so as to adjust the angle of the heliostat; a power supply unit; the heliostat is provided with a pitch angle sensor and a deflection angle sensor, the pitch angle sensor and the deflection angle sensor measure detection data, acquire the detection data by a single chip microcomputer computing unit and upload the detection data to a main control computing unit, a hydraulic control driving unit comprises a triaxial mechanical arm, the triaxial mechanical arm is connected with the heliostat through a spherical connecting piece, and a plurality of hydraulic cylinders are arranged between the triaxial mechanical arm and the heliostat and used for adjusting the deflection angle of the heliostat.
The single chip microcomputer computing unit is further provided with a storage unit, and the storage unit is used for storing recent heliostat angle change data.
Meanwhile, a plurality of light sensors are further mounted on the heliostat, the light sensors transmit detection data to the single chip microcomputer computing unit, the single chip microcomputer computing unit judges whether the heliostat is shielded by a shadow according to the data of the light sensors, and if the heliostat is shielded, a signal is generated and sent to the hydraulic control driving unit, so that the position of the heliostat is adjusted, and light is obtained better;
still include clean unit, clean unit connects and is used for regularly clearing up the impurity on heliostat surface in singlechip computational unit, clean unit is including automatic cleaning shower nozzle, automatic cleaning shower nozzle is installed in the earth's surface, when singlechip computational unit received not have sunshine to carry out the location tracking, then signal takes place for hydraulic control drive unit, hydraulic control drive unit rotates the heliostat to orientation ground, the back up, so can effectively protect the heliostat, and when the heliostat by the drive of triaxial driver to just when the earth's surface, automatic cleaning shower nozzle sprays and washes, can clean the heliostat surface, thereby guarantee the better work of heliostat the second day.
The heliostat control system consists of a special single chip microcomputer, a controller and a power supply. The main control computing unit obtains solar parameters through a network, then calculates the angle of the heliostat to be adjusted according to the heliostat longitude and latitude and the mounting position accurate data stored in the single chip microcomputer, transmits a control instruction to the hydraulic control driving unit for controlling the heliostat, and adjusts the pitch angle and the deflection angle of the heliostat. The power supply is used for supplying power to the singlechip.
The single chip microcomputer uniformly inputs a specific heliostat calculation program, the accurate position of each heliostat and relevant parameters of a power station before installation, and the angle of each heliostat to be adjusted can be quickly calculated only by the relevant parameters of the sun and the accurate position of each heliostat. The calculation speed is high, and the angle of the heliostat can be adjusted in real time according to the motion track of the sun. Because the heliostat is adjusted in real time in a small amplitude, a hydraulic control driving unit for adjusting the heliostat continuously operates without frequent start and stop, and meanwhile, a hydraulic cylinder device with smaller capacity can be adopted, so that the investment is small and the energy consumption is low.
The heliostat is provided with a pitch angle sensor and a deflection angle sensor, and measured data are collected by the singlechip and uploaded to the host. And comparing the data of each heliostat with the design data on the host computer, and finding and processing the deviation in time.
The main control computing unit is connected to the internet through a network cable and is responsible for tracking the movement track of the sun in real time and transmitting the parameters of the sun to the single chip microcomputer.
The heliostat angle change data in the near term can be stored in the single chip microcomputer, if a network or a sun tracking system has short-term faults, the heliostat control system can install the recently stored data to automatically adjust the heliostat angle, and the power station cannot be greatly influenced. The reliability is high.
The motion trail of each heliostat is calculated by the single chip microcomputer, so that the vast majority of calculation amount of the host is reduced.
The network only needs to transmit the solar parameters to the main control computing unit and collect the angle data of each heliostat. The network transmission amount is greatly reduced, and the cost of network equipment is reduced.
The invention also has the following characteristics that firstly, the network cable is connected, the network cable is used for connecting the main control computing unit with the internet, and the real-time sun position information is acquired and transmitted to the single chip microcomputer computing unit of each heliostat; secondly, the single chip microcomputer calculates the angle of the lens, the single chip microcomputer is adopted, heliostat position information (input after initialization during installation) is arranged in the single chip microcomputer, and the pitching and deflecting angles of the heliostat are automatically calculated according to the sun information transmitted by the main server, wherein the single chip microcomputer comprises a network interface, a data processing module and an accurate position information storage module; the system is characterized by also comprising independent accurate position information storage modules, wherein each control system of each heliostat is provided with an independent position information module for storing accurate position information and arrangement positions of the heliostat and accurately calculating the pitching and deflecting angles of the heliostat, the accurate position information storage modules are initialized firstly when being installed, and accurate longitude and latitude information and arrangement position information are input into the accurate position information storage modules and stored. When the control system is started, the accurate position information is read firstly, and then the accurate position information is used as a parameter to calculate the pitch and yaw angles of the current heliostat.
The real-time position of the sun is obtained through the internet, the data are transmitted to the single-chip microcomputers in time so as to adjust the deflection angles of the heliostats, each single-chip microcomputer controls the corresponding heliostat independently, the speed is high, the precision is high, the three-axis mechanical arm is used for carrying out precision positioning, the stability is high, meanwhile, the light sensors can be used for avoiding shadow parts of nearby buildings, and the light following efficiency of the heliostats is guaranteed; the heliostat can be protected when the heliostat is not used and can be automatically cleaned, so that the heliostat control system for the solar thermal power station can have better use efficiency, more accurate precision and longer service life.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. The utility model provides a heliostat control system for solar photothermal power station which characterized in that: the method comprises the following steps:
a heliostat;
a network unit: the system comprises a data acquisition module, a data transmission module, a data acquisition module and a data transmission module, wherein the data acquisition module is used for acquiring data of real-time movement locus of the sun from a network and transmitting the data;
the main control computing unit: receiving and storing real-time data of the sun tracking unit through the network unit;
the singlechip computing unit: the heliostat tracking control system is arranged on each heliostat, stores accurate data of the longitude and latitude and the installation position of the heliostat, is connected with a main control computing unit, acquires real-time data of a sun tracking unit from the main control computing unit, and calculates the angle of the heliostat to be adjusted according to the real-time data;
a hydraulic control drive unit: and the heliostat angle adjusting device is used for receiving adjusting data sent by the singlechip computing unit so as to adjust the angle of the heliostat.
2. The heliostat control system for a solar photothermal power station according to claim 1, characterized in that: the heliostat is provided with a pitch angle sensor and a deflection angle sensor, and the pitch angle sensor and the deflection angle sensor measure detection data, acquire the detection data by a singlechip computing unit and upload the detection data to a main control computing unit.
3. The heliostat control system for a solar photothermal power station according to claim 2, characterized in that: the hydraulic control driving unit comprises a three-axis mechanical arm, and the three-axis mechanical arm is connected with the heliostat through a spherical connecting piece.
4. The heliostat control system for a solar photothermal power station according to claim 3, wherein: and a plurality of hydraulic cylinders are arranged between the three-axis mechanical arm and the heliostat and used for adjusting the deflection angle of the heliostat.
5. The heliostat control system for a solar photothermal power station according to claim 1, characterized in that: the single chip microcomputer computing unit is further provided with a storage unit, and the storage unit is used for storing recent heliostat angle change data.
6. The heliostat control system for a solar photothermal power station according to claim 4, wherein: the heliostat is also provided with a plurality of light sensors, and the light sensors transmit detection data to the singlechip computing unit.
7. The heliostat control system for a solar photothermal power station according to claim 4, wherein: the cleaning unit is connected to the single chip microcomputer computing unit and used for cleaning impurities on the surface of the heliostat at regular time.
8. The heliostat control system for a solar photothermal power station of claim 7, wherein: the cleaning unit comprises an automatic cleaning sprayer, the automatic cleaning sprayer is installed on the ground surface, and when the heliostat is driven to be over against the ground surface by the three-axis driver, the automatic cleaning sprayer sprays and washes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911408700.3A CN111076433A (en) | 2019-12-31 | 2019-12-31 | Heliostat control system for solar thermal power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911408700.3A CN111076433A (en) | 2019-12-31 | 2019-12-31 | Heliostat control system for solar thermal power station |
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| CN111076433A true CN111076433A (en) | 2020-04-28 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103019220A (en) * | 2012-12-26 | 2013-04-03 | 首航节能光热技术股份有限公司 | Heliostat zone control system for tower solar thermal plants |
| CN103092157A (en) * | 2012-12-26 | 2013-05-08 | 首航节能光热技术股份有限公司 | Heliostat control system |
| CN103217957A (en) * | 2013-03-27 | 2013-07-24 | 中国电力工程顾问集团西北电力设计院 | Heliostat field control system of tower type solar power plant |
| JP2014009913A (en) * | 2012-07-02 | 2014-01-20 | Nissei Corp | System for communication control of heliostat and method of the same |
| CN108499956A (en) * | 2018-04-28 | 2018-09-07 | 江苏大学 | A kind of solar panels automatic cleaning apparatus |
| CN211552083U (en) * | 2019-12-31 | 2020-09-22 | 西派格工业智能装备(南通)有限公司 | Heliostat control system for solar thermal power station |
-
2019
- 2019-12-31 CN CN201911408700.3A patent/CN111076433A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014009913A (en) * | 2012-07-02 | 2014-01-20 | Nissei Corp | System for communication control of heliostat and method of the same |
| CN103019220A (en) * | 2012-12-26 | 2013-04-03 | 首航节能光热技术股份有限公司 | Heliostat zone control system for tower solar thermal plants |
| CN103092157A (en) * | 2012-12-26 | 2013-05-08 | 首航节能光热技术股份有限公司 | Heliostat control system |
| CN103217957A (en) * | 2013-03-27 | 2013-07-24 | 中国电力工程顾问集团西北电力设计院 | Heliostat field control system of tower type solar power plant |
| CN108499956A (en) * | 2018-04-28 | 2018-09-07 | 江苏大学 | A kind of solar panels automatic cleaning apparatus |
| CN211552083U (en) * | 2019-12-31 | 2020-09-22 | 西派格工业智能装备(南通)有限公司 | Heliostat control system for solar thermal power station |
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Country or region after: China Address after: Room 3011, A2 / F, Jianghai Zhihui garden, 266 New Century Avenue, high tech Zone, Nantong City, Jiangsu Province, 226000 Applicant after: Sipage (Nantong) electro hydraulic control technology Co.,Ltd. Address before: Room 3011, A2 / F, Jianghai Zhihui garden, 266 New Century Avenue, high tech Zone, Nantong City, Jiangsu Province, 226000 Applicant before: Xipaige industrial intelligent equipment (Nantong) Co.,Ltd. Country or region before: China |