CN107565907B - Reflection type trough type condensation heat and power cogeneration system - Google Patents
Reflection type trough type condensation heat and power cogeneration system Download PDFInfo
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
- Y02E10/60—Thermal-PV hybrids
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Abstract
A reflection type trough type condensation heat and power cogeneration system comprises a plurality of groups of condenser units and a water cooling recovery system; each group of concentrator units comprises: the device comprises a bracket system, a dual drive system, a reflector group and a battery pack string; the stent system comprises: the reflecting mirror support and the battery support are fixedly arranged on the reflecting mirror support, the battery assembly string is arranged on the battery support, the reflecting mirror is fixedly arranged near a focus of the reflecting mirror, and the reflecting mirror, the reflecting mirror support, the battery support and the battery assembly string are fixedly connected with each other to form an integrated structure; realizing heat and electricity supply and completing system technology integration; the IBC battery is applied to the groove type light condensing system, so that the power generation efficiency is improved; the condensation multiple reaches 10, and the circulating water has good cooling effect.
Description
Technical Field
The invention relates to the technical field of solar power generation, in particular to a reflective trough type condensation cogeneration system.
Background
Solar energy is an important renewable energy source, the efficient utilization of the solar energy is an important research subject, traditionally, the solar energy utilization mode mainly comprises photovoltaic conversion and photo-thermal conversion, the two modes are limited by lower solar energy flow density, the solar energy radiation energy flow density is improved by adopting a condensation mode, and the heat collection temperature and heat collection efficiency can be improved during photo-thermal utilization; the photovoltaic cell consumption can be reduced during photovoltaic conversion, and the cost is reduced. The concentrating cell has higher photoelectric conversion efficiency than a conventional photovoltaic cell, so that the concentrating utilization of solar energy has good prospect;
the combined heat and power system combines the core advantages of two large fields of photovoltaic and photo-thermal, a reflection type trough type condensation combined heat and power system with the maximum light energy utilization is developed, the reflection type trough type condensation combined heat and power system is a novel solar energy utilization technology with high efficiency and modularization, a solar track tracking system is adopted to control a trough type reflector to collect sunlight on a high-efficiency condensation photovoltaic module in real time, the condensation photovoltaic module absorbs the sunlight and then outputs electric power, heat generated during power generation can be cooled by adopting a water cooling heat dissipation technology as a module, heat generated by a battery is recycled while the working temperature of the battery is reduced, daily life water consumption of people is met, and meanwhile, a field monitoring unit and a remote monitoring system are adopted to collect, analyze and store operation data of the system in real time. The cogeneration system can maximize the comprehensive utilization efficiency of solar energy, and has important significance in the research of novel concentrators with low cost and high performance in concentrating photovoltaic application. Efficient and low-cost power generation by utilizing solar energy is an important research subject at present, and concentrating can improve solar radiation density and reduce the use of expensive photovoltaic cells, thereby reducing system cost. In the next 10 to 20 years, the new energy and the traditional fossil energy are in symbiotic and joint cooperation relationship in most occasions. The combined heat and power research project under the integration of reflection type trough condensation and photovoltaics can be widely applied to the fields of roof distributed energy, high-efficiency photovoltaic power stations, remote oilfield production wells for saving electricity and energy, natural gas and solar combined cycle power generation and the like due to the comprehensive advantages of sun tracking, adjustable allocation, high conversion efficiency and the like. Especially in the area of the existing domestic illumination resources I, II, the method can be expected to create an emerging market of hundreds of billions.
However, the solar tracking device adopted in the prior art is poor in effect design, a cosine shadow effect is easy to generate, and the defect that a photovoltaic cell becomes a resistance load is caused while power generation is reduced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a reflection type trough-type concentrating cogeneration system which better solves the technical defects of the traditional reflection type cogeneration system caused by shadow effect through a two-dimensional tracking system with azimuth angle and altitude angle controlled simultaneously, and has more optimal power generation and heating effects, simple design and convenient maintenance.
In order to achieve the above purpose, the present invention provides a reflective trough-type concentrating cogeneration system, comprising a plurality of groups of concentrator units and a water cooling recovery system;
each group of concentrator units comprises: the device comprises a bracket system, a dual drive system, a reflector group and a battery pack string;
as an illustration, the mirror group is one of a condenser;
as an illustration, the battery module string is an IBC photovoltaic module structure;
further, the stent system comprises: the reflecting mirror support and the battery support are fixedly arranged on the reflecting mirror support, the battery assembly string is arranged on the battery support, the reflecting mirror is fixedly arranged near a focus of the reflecting mirror, and the reflecting mirror, the reflecting mirror support, the battery support and the battery assembly string are fixedly connected with each other to form an integrated structure;
further, the integrated structure is driven to operate by a double-driving system;
further, the dual driving system includes: one is an elevation driving device responsible for elevation angle rotation, the other is an azimuth angle rotation driving device responsible for the whole integrated structure, an automatic tracking system and an electric control system;
the design idea of the automatic tracking system is as follows:
the first and the cogeneration systems mainly track the sun in real time through an automatic tracking system, and keep the main optical axis of the condenser parallel to the incident ray of the sunlight in real time;
the tracking mode of the traditional groove type system belongs to one-dimensional tracking, a paraboloid is generally arranged in the front-to-back direction according to the focal line of the paraboloid, a collecting lens only collects direct light rays, and the pitch angle of a reflecting mirror is regulated by utilizing a tracking device and a corresponding control system, so that cosine shadow effect is easily formed, and the power generation and heating effects of a photovoltaic panel are reduced;
secondly, the development of the automatic tracking system of the invention is obviously improved, so that the pitch angle and the azimuth angle can reach the tracking requirement, compared with the traditional one-dimensional tracking mode, the two-dimensional tracking can completely eliminate the shadow influence caused by the cosine effect, because under the condition of one-dimensional tracking, the sun is obliquely and directly irradiated onto the reflecting mirror, the shadow defect is inevitably generated, the shadow area in the morning and evening is maximum, the shadow area in the noon is minimum, the influence caused by the shadow is not simple, the generated energy of a plurality of photovoltaic panels is reduced, the photovoltaic panels are equivalent to loads under the shadow, not only do not generate electric energy, but also consume the electricity generated by other photovoltaic panels, the power generation efficiency is greatly reduced, and the two-dimensional tracking essentially eliminates the negative influence;
third, setting of tracking program:
(1) the condenser adopts a two-dimensional tracking system to track the running track of the sun in real time, and the tracking system enables the condenser to be always vertical to the sunlight, so that more solar energy can be collected in a limited use area; theoretical analysis shows that the solar tracking and non-tracking, the energy receiving rate is different by 37.7%, and the accurate solar tracking can greatly improve the solar energy receiving rate of the condenser, so that the overall efficiency of the system is improved, and therefore, the selection of a tracking accurate track algorithm and high-precision equipment plays a vital role in the power generation and heat collection effects of the condensing assembly;
(2) in the prior art, there are two ways of realizing full-automatic sun tracking, namely a photoelectric way and a mechanical way; the former has considerable limitations due to weather conditions, that is, it is difficult to achieve all-weather use. The latter can be divided into an equatorial type and an azimuth elevation type, wherein the equatorial type is obliquely arranged according to the local latitude, and the rotation speed along the equatorial plane can be kept for 1 week/24 hours, but the accurate rotation speed can not be easily achieved for 1 week/24 hours, and even if the adjustment of the solar declination is achieved, the manual operation is still required, so that the full-automatic requirement can not be met in practice; meanwhile, the equatorial type supporting structure is difficult to realize for a large-scale heavy-duty device, and is not suitable for the technical characteristics of groove type tracking;
the invention adopts a so-called azimuth elevation system, calculates the sun position at any time of any day, namely the azimuth and elevation angle of the sun, and further calculates the sun angle of the local longitude and latitude, thereby being the most accurate full-automatic tracking mode; based on the calculation method in the book "Astronomical Formulae for Calculators" by the Polan female scientist Jean Meeus, when the altitude angle is very low in the morning, the altitude angle is corrected by adopting an atmospheric refraction calculation formula, so that the calculation method is the sun position calculation method with the highest carried precision in the current literature, and the theoretical calculation precision can reach 0.052mrad;
(3) the system adopts a closed loop feedback system formed by the algorithm and the inclination sensor to carry out accurate tracking control, the system carries out real-time detection on the angle of the condenser by the inclination sensor, and the inclination sensor has a power failure memory function on the running position and can reflect the movement position of the device in real time; after the system is started, comparing the calculated theoretical value with an actual angle value acquired by a sensor in operation, ensuring that the deviation of a tracking driving system is controlled within +/-0.1 degree, and judging the running direction of the condenser according to the positive and negative of the obtained difference;
(4) in the altitude angle-azimuth angle tracking mode, the hardware structure motion corresponds to the change of the altitude angle and the azimuth angle of the sun, a horizontal coordinate system is adopted, one axis of the heliostat is perpendicular to the ground and becomes an azimuth axis, and the other axis is perpendicular to the azimuth axis and is called a pitching axis. In the process of tracking the sun, the heliostat moves around a pitching axis according to the change of the sun altitude angle, so that the inclination angle of the heliostat is changed; according to the change of the azimuth angle of the sun, the azimuth angle of the sun is tracked around the azimuth axis, so that the aim that the normal line of the heliostat is always parallel to the sun rays can be theoretically achieved;
as an illustration, not only tracking algorithm implementation, sensor data acquisition, equipment state monitoring and the like, but also danger avoidance of various emergency conditions, such as heavy wind and heavy rain, abnormal temperature, abnormal flow, abnormal pressure and the like, are considered in the program;
the electric control system is designed as follows:
the first and the second execution mechanisms can stably and orderly operate without effective data uploading and instruction issuing of the electric control system;
the second, the said electric control system core component is the programmable logic controller PLC, it is the brain of the automatic tracking control system, it collects the drive of the condenser, operation of the water-cooling apparatus, collection of the sensor and uploading the data function in an organic whole, monitor each component according to the algorithm program, make the system operate steadily, and can monitor the data collection of the apparatus through the touch-sensitive screen HMI on the control cabinet, and operate and control the operation of the apparatus. Real-time status signals, alarm signals, fault signals, etc. in the system can be displayed on the touch screen.
As an illustration, the real-time status signal comprises: current date and time, illumination intensity, ambient temperature, wind speed, actual position of the condenser, temperature of each condensing assembly, flow signals and the like;
as an example, the PLC is a Beckhoff of Germany, and comprises a normal temperature module and a wide temperature module,
as an illustration, the sensing employs a tilt sensor; the inclination sensor adopts German GEMAC, the resolution is 0.01, the precision is 0.04 degrees, the working temperature is-40-80 ℃, and the IP is 65.
Further, the water cooling recovery system includes: the system comprises a heat exchanger, an afterburning system, a hot water source tank and a user cold water source tank, wherein one end of the afterburning system is connected with one end of the heat exchanger, the other end of the afterburning system is connected with one end of the hot water source tank, and the other end of the hot water source tank is led to a user end; the other end of the heat exchanger is used for receiving circulating hot water for cooling the battery assembly string, recovering waste heat, and the third end of the heat exchanger is connected with a user cold water source tank;
as an illustration, the condenser focuses sunlight onto the photovoltaic module, in the photovoltaic module, a part of solar energy is converted into electric energy, living electricity can be provided for residents through the inverter, the other part of solar energy is converted into heat energy, the circulating water pump continuously inputs cold water in the water tank into the concentrating photovoltaic module through the water pipe, the heat of the cold water absorbing photovoltaic module dissipates heat of the photovoltaic module, hot water is formed and is output to the heat exchanger, resident water is heated, a heat storage device or an auxiliary conventional fuel boiler can be arranged in the system for solving the intermittence and instability of solar energy, and then the hot water is stored in the hot water tank.
As an illustration, the reflective trough type condensation heat and power cogeneration system can run under the unified control of the centralized monitoring system, is convenient for operators to monitor, run and maintain, can analyze and print data, and the like, and can send an operation instruction to a designated condenser through the system;
in order to better explain the design principle of the invention, the technical design concept is briefly introduced as follows:
firstly, utilizing the focusing characteristic of a groove type photo-thermal reflector to form modularized technical integration with a concentrating photovoltaic module, reflecting and focusing sunlight on the photovoltaic module to form multiplication of light source collection, and improving the power generation efficiency of the photovoltaic module;
and secondly, a water cooling mode is adopted, the cooled waste heat is recovered and output through a pipeline, and a better cogeneration system effect is realized.
Finally, the reflection type trough type condensation heat and power cogeneration system is a comprehensive project which relates to integration of optics, thermal engineering, electric control, structure, battery and the like, and no practical case exists at home and abroad at present from the design point of view, and the system is expected to realize 75% -80% of the peak total efficiency of heat and power cogeneration solar energy, wherein the power generation efficiency is 15% -20%, and the hot water output efficiency is 60% at 50-100 ℃;
the beneficial effects are that:
(1) realizing heat and electricity supply and completing system technology integration;
(2) and the IBC battery is applied to the groove type light condensing system, so that the power generation efficiency is improved.
(3) The condensation multiple reaches 10, and the circulating water has good cooling effect;
drawings
FIG. 1 is a schematic diagram of a reflective trough-type concentrating cogeneration system according to the invention
FIG. 2 is a diagram showing a preferred connection example of an electric control system of a reflective trough-type concentrating cogeneration system according to the invention
FIG. 3 is a schematic diagram showing the layout of the electric control system of the reflective trough-type concentrating cogeneration system according to the present invention
FIG. 4 is a diagram illustrating an exemplary operation interface of an electrical control system of a reflective trough-type concentrating cogeneration system according to the invention
Detailed Description
Referring now to fig. 1 to 4, a reflective trough concentrating cogeneration system comprises a plurality of groups of concentrator units 101 and a water cooling recovery system 102;
each group of concentrator units comprises 101: a rack system 103, a dual drive system 104, a mirror group 105, and a battery pack string 106;
as an illustration, the mirror group 105 is one of a condenser;
as an illustration, the cell module string 106 is an IBC photovoltaic module structure;
further, the bracket system 103 includes: the reflecting mirror support and the battery support are fixedly arranged on the reflecting mirror support, the battery assembly string is arranged on the battery support, the reflecting mirror is fixedly arranged near a focus of the reflecting mirror, and the reflecting mirror, the reflecting mirror support, the battery support and the battery assembly string are fixedly connected with each other to form an integrated structure;
further, the integrated structure is driven to operate by the dual-drive system 104;
further, the dual drive system 104 includes: one is an elevation driving device responsible for elevation angle rotation, the other is an azimuth angle rotation driving device responsible for the whole integrated structure, an automatic tracking system and an electric control system;
the design idea of the automatic tracking system is as follows:
the first and the cogeneration systems mainly track the sun in real time through an automatic tracking system, and keep the main optical axis of the condenser parallel to the incident ray of the sunlight in real time;
the tracking mode of the traditional groove type system belongs to one-dimensional tracking, a paraboloid is generally arranged in the front-to-back direction according to the focal line of the paraboloid, a collecting lens only collects direct light rays, and the pitch angle of a reflecting mirror is regulated by utilizing a tracking device and a corresponding control system, so that cosine shadow effect is easily formed, and the power generation and heating effects of a photovoltaic panel are reduced;
secondly, the development of the automatic tracking system of the invention is obviously improved, so that the pitch angle and the azimuth angle can reach the tracking requirement, compared with the traditional one-dimensional tracking mode, the two-dimensional tracking can completely eliminate the shadow influence caused by the cosine effect, because under the condition of one-dimensional tracking, the sun is obliquely and directly irradiated onto the reflecting mirror, the shadow defect is inevitably generated, the shadow area in the morning and evening is maximum, the shadow area in the noon is minimum, the influence caused by the shadow is not simple, the generated energy of a plurality of photovoltaic panels is reduced, the photovoltaic panels are equivalent to loads under the shadow, not only do not generate electric energy, but also consume the electricity generated by other photovoltaic panels, the power generation efficiency is greatly reduced, and the two-dimensional tracking essentially eliminates the negative influence;
third, setting of tracking program:
(1) the condenser adopts a two-dimensional tracking system to track the running track of the sun in real time, and the tracking system enables the condenser to be always vertical to the sunlight, so that more solar energy can be collected in a limited use area; theoretical analysis shows that the solar tracking and non-tracking, the energy receiving rate is different by 37.7%, and the accurate solar tracking can greatly improve the solar energy receiving rate of the condenser, so that the overall efficiency of the system is improved, and therefore, the selection of a tracking accurate track algorithm and high-precision equipment plays a vital role in the power generation and heat collection effects of the condensing assembly;
(2) in the prior art, there are two ways of realizing full-automatic sun tracking, namely a photoelectric way and a mechanical way; the former has considerable limitations due to weather conditions, that is, it is difficult to achieve all-weather use. The latter can be divided into an equatorial type and an azimuth elevation type, wherein the equatorial type is obliquely arranged according to the local latitude, and the rotation speed along the equatorial plane can be kept for 1 week/24 hours, but the accurate rotation speed can not be easily achieved for 1 week/24 hours, and even if the adjustment of the solar declination is achieved, the manual operation is still required, so that the full-automatic requirement can not be met in practice; meanwhile, the equatorial type supporting structure is difficult to realize for a large-scale heavy-duty device, and is not suitable for the technical characteristics of groove type tracking;
the invention adopts a so-called azimuth elevation system, calculates the sun position at any time of any day, namely the azimuth and elevation angle of the sun, and further calculates the sun angle of the local longitude and latitude, thereby being the most accurate full-automatic tracking mode; based on the calculation method in the book "Astronomical Formulae for Calculators" by the Polan female scientist Jean Meeus, when the altitude angle is very low in the morning, the altitude angle is corrected by adopting an atmospheric refraction calculation formula, so that the calculation method is the sun position calculation method with the highest carried precision in the current literature, and the theoretical calculation precision can reach 0.052mrad;
(3) the system adopts a closed loop feedback system formed by the algorithm and the inclination sensor to carry out accurate tracking control, the system carries out real-time detection on the angle of the condenser by the inclination sensor, and the inclination sensor has a power failure memory function on the running position and can reflect the movement position of the device in real time; after the system is started, comparing the calculated theoretical value with an actual angle value acquired by a sensor in operation, ensuring that the deviation of a tracking driving system is controlled within +/-0.1 degree, and judging the running direction of the condenser according to the positive and negative of the obtained difference;
(4) in the altitude angle-azimuth angle tracking mode, the hardware structure motion corresponds to the change of the altitude angle and the azimuth angle of the sun, a horizontal coordinate system is adopted, one axis of the heliostat is perpendicular to the ground and becomes an azimuth axis, and the other axis is perpendicular to the azimuth axis and is called a pitching axis. In the process of tracking the sun, the heliostat moves around a pitching axis according to the change of the sun altitude angle, so that the inclination angle of the heliostat is changed; according to the change of the azimuth angle of the sun, the azimuth angle of the sun is tracked around the azimuth axis, so that the aim that the normal line of the heliostat is always parallel to the sun rays can be theoretically achieved;
as an illustration, not only tracking algorithm implementation, sensor data acquisition, equipment state monitoring and the like, but also danger avoidance of various emergency conditions, such as heavy wind and heavy rain, abnormal temperature, abnormal flow, abnormal pressure and the like, are considered in the program;
the electric control system is designed as follows:
the first and the second execution mechanisms can stably and orderly operate without effective data uploading and instruction issuing of the electric control system;
the second, the said electric control system core component is the programmable logic controller PLC, it is the brain of the automatic tracking control system, it collects the drive of the condenser, operation of the water-cooling apparatus, collection of the sensor and uploading the data function in an organic whole, monitor each component according to the algorithm program, make the system operate steadily, and can monitor the data collection of the apparatus through the touch-sensitive screen HMI on the control cabinet, and operate and control the operation of the apparatus. Real-time status signals, alarm signals, fault signals, etc. in the system can be displayed on the touch screen.
As an illustration, the real-time status signal comprises: current date and time, illumination intensity, ambient temperature, wind speed, actual position of the condenser, temperature of each condensing assembly, flow signals and the like;
as an example, the PLC is a Beckhoff of Germany, and comprises a normal temperature module and a wide temperature module,
as an illustration, the sensing employs a tilt sensor; the inclination sensor adopts German GEMAC, the resolution is 0.01, the precision is 0.04 degrees, the working temperature is-40-80 ℃, and the IP is 65.
Further, the water cooling recovery system 102 includes: the system comprises a heat exchanger 107, an afterburning system 108, a hot water source tank 109 and a user cold water source tank 110, wherein one end of the afterburning system 108 is connected with one end of the heat exchanger 107, the other end of the afterburning system 108 is connected with one end of the hot water source tank, and the other end of the hot water source tank is led to the user end; the other end of the heat exchanger 107 is used for receiving the circulating hot water for cooling the battery assembly string 106 and recovering waste heat, and the third end of the heat exchanger 107 is connected with a user cold water source tank 110;
as an illustration, the condenser focuses sunlight onto the photovoltaic module, in the photovoltaic module, a part of solar energy is converted into electric energy, domestic electricity can be provided for residents through the inverter, the other part of solar energy is converted into heat energy, the circulating water pump continuously inputs cold water in the water tank into the concentrating photovoltaic module through the water pipe, the heat of the cold water absorbing photovoltaic module dissipates heat of the photovoltaic module, hot water is formed and is output to the heat exchanger, resident water is heated, a heat storage device or an auxiliary conventional fuel boiler can be arranged in the system for solving the intermittence and instability of solar energy, and then the hot water is stored in the hot water tank.
As an illustration, the reflective trough type condensation heat and power cogeneration system can run under the unified control of the centralized monitoring system, is convenient for operators to monitor, run and maintain, can analyze and print data, and the like, and can send an operation instruction to a designated condenser through the system;
in order to better explain the design principle of the invention, the technical design concept is briefly introduced as follows:
firstly, utilizing the focusing characteristic of a groove type photo-thermal reflector to form modularized technical integration with a concentrating photovoltaic module, reflecting and focusing sunlight on the photovoltaic module to form multiplication of light source collection, and improving the power generation efficiency of the photovoltaic module;
and secondly, a water cooling mode is adopted, the cooled waste heat is recovered and output through a pipeline, and a better cogeneration system effect is realized.
Finally, the reflection type trough type condensation heat and power cogeneration system is a comprehensive project which relates to integration of optics, thermal engineering, electric control, structure, battery and the like, and no practical case exists at home and abroad at present from the design point of view, and the system is expected to realize 75% -80% of the peak total efficiency of heat and power cogeneration solar energy, wherein the power generation efficiency is 15% -20%, and the hot water output efficiency is 60% at 50-100 ℃;
preferred embodiment 1:
the project is to construct a 100KW reflection type trough condensation cogeneration system, 8 groups of trough condensers are utilized to condense light, each group of condensers comprises 6 condensing units, the total length is 32.9 meters, the condensation design multiplying power is 14 times, the rated peak output of each group of condensers is 12.8KWP (when DNI is 850W/square meter), and the detailed design parameters of the condensers are shown in Table 1;
TABLE 1
The data support and test platform is provided for the large-scale development of the reflective trough-type concentrating cogeneration system through the demonstration project, the reliability of the cogeneration system is verified, and test data are collected to analyze accumulated experience; realizing heat and electricity supply and completing system technology integration; the IBC battery is applied to the groove type light condensing system, so that the power generation efficiency is improved; the condensation multiple reaches 10, and the circulating water has good cooling effect;
the above disclosure is only one specific embodiment of the present application, but the present application is not limited thereto, and any changes that can be thought by those skilled in the art should fall within the protection scope of the present application.
Claims (7)
1. The reflection type trough type condensation cogeneration system is characterized by comprising a plurality of groups of condenser units and a water cooling recovery system;
each group of concentrator units comprises: the device comprises a bracket system, a dual drive system, a reflector group and a battery pack string; the stent system comprises: the reflecting mirror support and the battery support are fixedly arranged on the reflecting mirror support, the battery assembly string is arranged on the battery support, the reflecting mirror is fixedly arranged near a focus of the reflecting mirror, and the reflecting mirror, the reflecting mirror support, the battery support and the battery assembly string are fixedly connected with each other to form an integrated structure;
the integrated structure is driven by a double-driving system to operate; the dual drive system includes: one is an elevation driving device responsible for elevation angle rotation, the other is an azimuth angle rotation driving device responsible for the whole integrated structure, an automatic tracking system and an electric control system;
the electronic control system comprises: the programmable logic controller PLC integrates the functions of driving a condenser, running water-cooling equipment, collecting a sensor and uploading data, monitors each part according to an algorithm program, enables an electric control system to run stably, monitors the collected data of the equipment through a touch screen HMI on a control cabinet, controls the running of the equipment, and displays real-time state signals, alarm signals and fault signals in the system on the touch screen;
the water cooling recovery system includes: the system comprises a heat exchanger, an afterburning system, a hot water source tank and a user cold water source tank, wherein one end of the afterburning system is connected with one end of the heat exchanger, the other end of the afterburning system is connected with one end of the hot water source tank, and the other end of the hot water source tank is led to a user end; the other end of the heat exchanger is used for receiving circulating hot water for cooling the battery assembly string and recovering waste heat, and the third end of the heat exchanger is connected with a user cold water source tank.
2. The reflective trough concentrating cogeneration system of claim 1 wherein the mirror assembly is one of a concentrator.
3. The reflective trough concentrating cogeneration system of claim 2, wherein the battery assembly string is an IBC photovoltaic assembly structure.
4. A reflective trough concentrating cogeneration system according to claim 3, wherein the concentrator tracks the solar trajectory in real time using a two-dimensional tracking system.
5. The reflective trough concentrating cogeneration system of claim 4 wherein the system uses a closed loop feedback system of the algorithm plus tilt sensor to perform accurate tracking control.
6. The reflective trough concentrating cogeneration system of claim 5, wherein the PLC comprises a normal temperature module and a wide temperature module.
7. The reflective trough concentrating cogeneration system of claim 4 wherein the sensor is an inclination sensor; the precision of the inclination angle sensor is 0.04 degrees, and the working temperature is-40-80 ℃.
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| US5851309A (en) * | 1996-04-26 | 1998-12-22 | Kousa; Paavo | Directing and concentrating solar energy collectors |
| CN1848656A (en) * | 2006-03-14 | 2006-10-18 | 张耀明 | Batterfly shape reflective light gathering photovoltaic power generating system |
| CN102957345A (en) * | 2012-11-12 | 2013-03-06 | 中国科学技术大学 | High-concentration photovoltaic power generation heat supply system |
| CN207399140U (en) * | 2017-09-27 | 2018-05-22 | 成都禅德太阳能电力有限公司 | A kind of reflection-type slot light collection cogeneration system |
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