CN209840440U - Solar full-spectrum combined heat and power system - Google Patents
Solar full-spectrum combined heat and power system Download PDFInfo
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- CN209840440U CN209840440U CN201920229058.1U CN201920229058U CN209840440U CN 209840440 U CN209840440 U CN 209840440U CN 201920229058 U CN201920229058 U CN 201920229058U CN 209840440 U CN209840440 U CN 209840440U
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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
- Y02E10/44—Heat exchange systems
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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
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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
- Y02E10/50—Photovoltaic [PV] energy
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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
The utility model provides a solar full spectrum combined heat and power system, relating to the technical field of solar full spectrum comprehensive utilization, comprising a concentrating photovoltaic photo-thermal device, a power supply device, a heating power supply device and a test control device; the concentrating photovoltaic photo-thermal device converts full-spectrum solar radiation energy into electric energy and heat energy, and stores the heat energy into a heat storage medium box of the heat supply device; and storing the electrical energy into a lithium battery of the power supply device. When the system operates, part of electric energy stored by the lithium battery is used for driving the concentrating photovoltaic photo-thermal device, the heat supply device and the test control device to operate, and other electric energy is used for supplying electric loads to users; part of the heat energy stored in the heat storage medium box is used for ensuring that the lithium battery works at the optimal temperature, and other heat energy supplies heat load of users. The novel method for self-generating electricity self-using electricity and energy storage configuration of the solar full-spectrum combined heat and power system realizes high-efficiency independent operation without the assistance of external electricity/heat energy.
Description
Technical Field
The utility model belongs to the technical field of the solar photovoltaic light and heat comprehensive utilization technique and specifically relates to a solar energy full gloss register for easy reference thermoelectricity cogeneration system is related to.
Background
On one hand, the concentrating photovoltaic photo-thermal technology can realize the comprehensive utilization of all bands of solar energy in a combined heat and power mode; on the other hand can replace photovoltaic light and heat subassembly through the spotlight ware, reduced system cost, improved the light and heat quality simultaneously. The existing concentrating photovoltaic photo-thermal system needs external power supply to maintain the operation of its internal heat supply device, test and control system (operation management center) and tracking equipment. However, in remote areas, due to the high difficulty of external power supply technology, the development of solar energy resources in such areas causes high marginal cost, and further causes the idle and waste of solar energy resources.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a solar energy full gloss register for easy reference thermoelectricity allies oneself with confession system realizes the electricity of self-generation of solar energy full gloss register for easy reference thermoelectricity allies oneself with confession to high-efficient full gloss register for easy reference solar energy of utilization makes it possess the new function of independent autonomous movement that does not need outside electric energy heat energy to assist the support.
In a first aspect, an embodiment of the present invention provides a solar full spectrum cogeneration system, which includes: the device comprises a concentrating photovoltaic photo-thermal device, an electric power supply device, a heating power supply device and a test control device which are connected in sequence; the concentrating photovoltaic photo-thermal device is also connected with the heat supply device and the test control device; the power supply device is connected with the test control device; the concentrating photovoltaic photo-thermal device is used for converting full-spectrum solar radiation energy into electric energy and heat energy and storing the heat energy to the heat supply device; and storing the electrical energy to the electrical power supply; the power supply device is used for driving the concentrated photovoltaic photo-thermal device, the heat supply device, the test control device and the user electric load to work by the stored electric energy; the heat supply device is used for providing the stored heat energy to a user heat load and the power supply device so as to ensure that the power supply device outputs electric energy at a preset working temperature; the test control device is used for monitoring and/or configuring the operating parameters of the concentrating photovoltaic photo-thermal device and the heat supply device and monitoring the operating state of the power supply device.
In combination with the first aspect, embodiments of the present invention provide a first possible implementation manner of the first aspect, where the concentrating photovoltaic photo-thermal device includes a concentrating photovoltaic photo-thermal array and a tracking device connected to the concentrating photovoltaic photo-thermal array; the concentrating photovoltaic photo-thermal array comprises a plurality of groups of concentrating photovoltaic photo-thermal units, wherein the plurality of groups of concentrating photovoltaic photo-thermal units are connected in a preset series-parallel mode, a concentrator is arranged at the top end of each concentrating photovoltaic photo-thermal unit, and a photovoltaic photo-thermal assembly is arranged at the bottom end of each concentrating photovoltaic photo-thermal unit; the concentrating photovoltaic photo-thermal unit is arranged on the bracket; the concentrating photovoltaic photo-thermal unit is used for concentrating solar radiation energy by using the concentrator and then converting the solar radiation energy into electric energy and heat energy by using the photovoltaic photo-thermal component; the tracking device is used for adjusting the inclination angle of the support, so that the included angle between the direct solar light and the incident light hole of the condenser is a preset angle.
With reference to the first aspect, an embodiment of the present invention provides a second possible implementation manner of the first aspect, where the power supply device includes a photovoltaic inversion control all-in-one machine and a lithium battery connected to the photovoltaic inversion control all-in-one machine; the photovoltaic inversion control integrated machine is connected with the concentrating photovoltaic photo-thermal device and the heating power supply device; the photovoltaic inversion control all-in-one machine is used for controlling the concentrating photovoltaic photo-thermal device to output electric energy at a set maximum power and storing the electric energy to the lithium battery; the lithium battery is used for providing the stored electric energy to the concentrating photovoltaic photo-thermal device, the heating power supply device, the test control device and the user electric load through the photovoltaic inversion control all-in-one machine and receiving the heat energy transmitted by the heating power supply device so as to ensure that the lithium battery outputs the electric energy at the preset working temperature.
In combination with the first aspect, an embodiment of the present invention provides a third possible implementation manner of the first aspect, in which the heat supply device includes a cold medium tank, a first circulating pump, a hot medium tank, a second circulating pump, an electromagnetic valve, and a lithium battery thermostat, which are sequentially connected by a medium pipeline; the first circulating pump is connected with the thermal medium box through the concentrating photovoltaic photo-thermal device; the medium stored in the medium pipeline flows through the concentrating photovoltaic photo-thermal device from the cold medium box under the action of the first circulating pump so as to obtain the heat energy converted by the concentrating photovoltaic photo-thermal device, and the medium after the heat energy is obtained is stored in the heat medium box; when the electromagnetic valve is detected to be opened, the medium with the acquired heat energy flows to the lithium battery thermostat and a user heat load under the action of the second circulating pump.
With reference to the third possible implementation manner of the first aspect, an embodiment of the present invention provides a fourth possible implementation manner of the first aspect, where the test control device includes an operation management center, and a data acquisition device and a control device that are connected to the operation management center; the data acquisition device is used for acquiring the operating parameters and the environmental parameters of the solar full-spectrum combined heat and power system; the operation management center is used for collecting operation parameters and environment parameters, analyzing, processing and displaying the operation parameters and the environment parameters, and outputting control commands to the control device according to the processed operation parameters and environment parameters; the control device is used for controlling the first circulating pump and the second circulating pump according to the control command.
With reference to the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a fifth possible implementation manner of the first aspect, where the operation management center includes an operation center, and a data acquisition module, a control module, and a human-computer interface, which are connected to the operation center; the data acquisition module is used for collecting the operation parameters and the environmental parameters acquired by the data acquisition device and transmitting the operation parameters and the environmental parameters to the operation center; the operation center is used for sending a control command to the control module according to the operation parameters and the environment parameters; the control module is used for configuring the power supply device, the heat supply device and the test control device according to the control command; the operation center is also used for predicting the system operation state of the operation parameters and the environment parameters according to a precompiled system prediction algorithm and sending the system operation state to the human-computer interface; the human-computer interface is used for displaying the running state of the system so as to monitor the running states of the concentrating photovoltaic photo-thermal device, the heat supply device and the power supply device.
In combination with the fourth possible implementation manner of the first aspect, an embodiment of the present invention provides a sixth possible implementation manner of the first aspect, and the data acquisition device includes a solar radiation meter, a temperature acquisition device, a flow meter, an anemometer, an electric energy meter, and a liquid level acquisition device; the solar radiation meter is used for detecting the radiation energy of external solar radiation energy; the flow meter is used for detecting the flow rate of the medium stored in the medium pipeline; the anemometer is used for detecting the external wind speed; the electric energy meter is used for detecting the electric quantity stored by the electric power supply device; the temperature acquisition device is used for detecting the temperature of the medium and the environment; the liquid level acquisition device is used for detecting the liquid level height of the medium in the cold medium box and the hot medium box.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides a seventh possible implementation manner of the first aspect, and the temperature acquisition device includes a first thermometer, a second thermometer, and an environmental thermometer; the first thermometer is arranged on a pipeline of a medium pipeline between the cold medium box and the concentrating photovoltaic photo-thermal array; the second thermometer is installed on a pipeline of a medium pipeline between the heat medium box and the concentrating photovoltaic photo-thermal array.
With reference to the sixth possible implementation manner of the first aspect, an embodiment of the present invention provides an eighth possible implementation manner of the first aspect, and the liquid level collection device includes a first liquid level meter and a second liquid level meter; the first liquid level meter is arranged on the inner wall of the cold medium box; the second liquid level meter is arranged on the inner wall of the heat medium box.
The embodiment of the utility model provides a following beneficial effect has been brought:
the embodiment of the utility model provides a solar energy full spectrum cogeneration system, which comprises a concentrating photovoltaic photo-thermal device, an electric power supply device, a heating power supply device and a test control device; the concentrating photovoltaic photo-thermal device converts full-spectrum solar radiation energy into electric energy and heat energy, and stores the heat energy into a heat storage medium box of the heat supply device; storing electric energy into a lithium battery of the power supply device, wherein when the system operates, part of the electric energy stored by the lithium battery is used for driving a concentrating photovoltaic photo-thermal device, a heating power supply device and a test control device of the system to operate, and other electric energy is used for supplying electric loads to users; part of heat energy stored in the heat storage medium box is used for ensuring that the lithium battery outputs electric energy at the optimal working temperature, and other heat energy is used for supplying heat load to users; the test control device is used for monitoring and/or configuring the operating parameters of the concentrating photovoltaic photo-thermal device and the heat supply device and monitoring the operating state of the power supply device. According to the novel method for self-generating electricity self-power utilization and energy storage configuration of solar full-spectrum combined heat and power, the system not only realizes high-efficiency utilization of full-spectrum solar energy, but also has a novel independent and independent operation function without auxiliary support of external electric energy and heat energy.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a solar full spectrum cogeneration system according to an embodiment of the present invention;
fig. 2 is a system diagram of a solar full spectrum cogeneration system according to an embodiment of the present invention;
fig. 3 is a flowchart of an energy storage configuration method according to an embodiment of the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
At present, current solar energy full gloss register for easy reference thermoelectricity allies oneself with confession system and relies on external power supply to maintain normal operating, based on this, the embodiment of the utility model provides a solar energy full gloss register for easy reference thermoelectricity allies oneself with confession system has not only realized the high-efficient full gloss register for easy reference solar energy that utilizes, but also has possessed the new function of independent autonomous operation that does not need the supplementary support of outside electric energy heat energy.
For the convenience of understanding the present embodiment, a solar full spectrum cogeneration system disclosed in the embodiments of the present invention will be described in detail first.
The first embodiment is as follows:
the embodiment of the utility model provides a solar energy full gloss register for easy reference thermoelectricity allies oneself with confession system, refer to the structural block diagram of a solar energy full gloss register for easy reference thermoelectricity allies oneself with confession system that fig. 1 shows, this system includes spotlight photovoltaic light and heat device 102, electric power supply device 104, heating power supply device 106, test controlling means 108 that connect gradually;
during specific implementation, the concentrating photovoltaic photo-thermal device is also connected with a heat supply device and a test control device; the power supply device is connected with the test control device;
the concentrating photovoltaic photo-thermal device is used for converting full-spectrum solar radiation energy into electric energy and heat energy and storing the heat energy to the heat supply device; and storing the electrical energy to the electrical power supply; the power supply device is used for driving the concentrated photovoltaic photo-thermal device, the heat supply device, the test control device and the user electric load to work by the stored electric energy;
the heat supply device is used for providing the stored heat energy to a user heat load and the power supply device so as to ensure that the power supply device outputs electric energy at a preset working temperature;
the test control device is used for monitoring and/or configuring the operating parameters of the concentrating photovoltaic photo-thermal device and the heat supply device and monitoring the operating state of the power supply device.
The embodiment provides a solar full-spectrum combined heat and power system, which comprises a concentrating photovoltaic photo-thermal device, an electric power supply device, a thermal power supply device and a test control device; the concentrating photovoltaic photo-thermal device converts full-spectrum solar radiation energy into electric energy and heat energy, and stores the heat energy into a heat storage medium box of the heat supply device; storing electric energy into a lithium battery of the power supply device, wherein when the system operates, part of the electric energy stored by the lithium battery is used for driving a concentrating photovoltaic photo-thermal device, a heating power supply device and a test control device of the system to operate, and other electric energy is used for supplying electric loads to users; part of heat energy stored in the heat storage medium box is used for ensuring that the lithium battery outputs electric energy at the optimal working temperature, and other heat energy is used for supplying heat load to users; the test control device is used for monitoring and/or configuring the operating parameters of the concentrating photovoltaic photo-thermal device and the heat supply device and monitoring the operating state of the power supply device. According to the novel method for self-generating electricity self-power utilization and energy storage configuration of solar full-spectrum combined heat and power, the system not only realizes high-efficiency utilization of full-spectrum solar energy, but also has a novel independent and independent operation function without auxiliary support of external electric energy and heat energy.
On the basis of the above embodiment, fig. 2 shows a system diagram of a solar full-spectrum cogeneration system, in which a user electrical load 200 and a user thermal load 201 are plotted, wherein a medium flow direction in a medium pipeline is represented by a straight arrow line, a current flow direction in a cable is represented by a dashed arrow line, and a signal line is represented by a dotted line; in order to improve the conversion efficiency of the concentrating photovoltaic photo-thermal device on electric energy and heat energy and avoid waste of solar radiation energy resources in the system, the concentrating photovoltaic photo-thermal device 102 comprises a concentrating photovoltaic photo-thermal array 202 and a tracking device 204 connected with the concentrating photovoltaic photo-thermal array; for a specific installation method of the concentrated photovoltaic photo-thermal device, refer to patent CN 105024629A.
Specifically, the concentrating photovoltaic photo-thermal array comprises a plurality of groups of concentrating photovoltaic photo-thermal units, wherein the plurality of groups of concentrating photovoltaic photo-thermal units are connected in a preset series-parallel mode, a concentrator is arranged at the top end of each concentrating photovoltaic photo-thermal unit, and a photovoltaic photo-thermal assembly is arranged at the bottom end of each concentrating photovoltaic photo-thermal unit; the concentrating photovoltaic photo-thermal unit is arranged on the bracket;
in the concrete implementation, because the power supply device has the limitation of rated voltage and rated current, in order to avoid that the voltage and the current value provided by the concentrating photovoltaic photo-thermal device exceed the rated range of the power supply device and further cause the overload operation of the power supply device, and simultaneously ensure that the concentrating photovoltaic photo-thermal device has larger electric energy conversion power, a plurality of groups of concentrating photovoltaic photo-thermal units are generally connected in a preset series-parallel connection mode, specifically, the electric energy conversion power of each group of concentrating photovoltaic photo-thermal units is certain, a certain number of concentrating photovoltaic photo-thermal units work together to realize the requirement on the electric energy conversion power, if a certain number of concentrating photovoltaic photo-thermal units work in parallel, the current loaded on the power supply device is overlarge, if a certain number of concentrating photovoltaic photo-thermal units work in series, the voltage loaded on the power supply device is overlarge, based on the principle, one or more series-parallel connection modes are preset, so that when the plurality of groups of concentrating photovoltaic photo-thermal units are connected in the preset series-parallel connection mode, the voltage and the current loaded on the power supply device are within the rated range which can be borne by the power supply device.
Further, the concentrating photovoltaic photo-thermal unit is used for concentrating the direct solar light by using the concentrator to obtain solar radiation energy, and then converting the solar radiation energy into electric energy and heat energy by using the photovoltaic photo-thermal component; the condenser can be a thermophotovoltaic condenser or a single-reflection compound parabolic condenser. Because the position that the direct solar light shines directly in different time quantums is different, in order to ensure that spotlight photovoltaic light heat device can the absorption solar radiation energy of maximum area, receives the strongest of direct solar light and shines, tracking means is used for adjusting the inclination of support for the contained angle of direct solar light and spotlight ware incident light hole is predetermined the angle. The predetermined angle is generally set to a floating range, such as 80 ° to 110 °, so that the concentrated photovoltaic photothermal device receives the direct solar light with the largest contact area as possible.
In order to avoid influencing the normal heat and electricity consumption of the user under the circumstance that the concentrated photovoltaic photo-thermal device cannot perform electric energy and thermal energy conversion on full-spectrum solar radiation energy in an environment with insufficient solar radiation energy, such as rainy weather, the power supply device 104 may include a photovoltaic inversion control all-in-one machine 206 and a lithium battery 208 connected with the photovoltaic inversion control all-in-one machine.
During specific implementation, the photovoltaic inversion control integrated machine is connected with the concentrating photovoltaic photo-thermal device and the heating power supply device; the photovoltaic inversion control all-in-one machine is used for controlling the concentrating photovoltaic photo-thermal device to output electric energy at a set maximum power and storing the electric energy to the lithium battery;
the lithium battery is used for providing the stored electric energy to the concentrating photovoltaic photo-thermal device, the heating power supply device, the test control device and the user electric load through the photovoltaic inversion control all-in-one machine and receiving the heat energy transmitted by the heating power supply device so as to ensure that the lithium battery outputs the electric energy at the preset working temperature.
The photovoltaic inversion control all-in-one machine can control the concentrating photovoltaic photo-thermal device by adopting an MPPT (Maximum Power Point Tracking) control method so as to ensure that the concentrating photovoltaic photo-thermal device can output electric energy at a set Maximum Power. The photovoltaic inversion control all-in-one machine can also obtain direct current from the lithium battery, and the obtained direct current is converted into working voltage required by the concentrating photovoltaic photo-thermal device, the heating power supply device and the test control device in an inversion, filtering and/or rectification mode, so that the concentrating photovoltaic photo-thermal device, the heating power supply device and the test control device work.
The photovoltaic inversion control all-in-one machine can also be connected with a user electric load and converts the direct current into working voltage required by the user electric load so as to enable the user electric load to work. Based on this, this solar energy full spectrum cogeneration system can also be incorporated into the power networks the operation for provide the user's electric load such as electric wire netting with the electric energy of conversion and use.
Further, the lithium battery is generally most efficient in outputting electric energy at a certain temperature, and the capacity of storing electric energy is the greatest, for example, at 26 degrees celsius, the performance of the lithium battery is the best, based on which the lithium battery can be installed at the periphery of the heat supply device, or a pipe is provided in the heat supply device to allow a medium having heat to flow through the lithium battery through the pipe to transfer heat energy to the lithium battery.
Further, the heat supply device 106 includes a cold medium tank 210, a first circulation pump 212, a hot medium tank 214, a second circulation pump 216, an electromagnetic valve 218, and a lithium battery thermostat 220, which are connected in sequence by medium pipes; the first circulating pump is connected with the thermal medium box through the concentrating photovoltaic photo-thermal device;
during specific implementation, a medium stored in the medium pipeline flows through the concentrating photovoltaic photo-thermal device from the cold medium box under the action of the first circulating pump so as to obtain heat energy converted by the concentrating photovoltaic photo-thermal device, and the medium after the heat energy is obtained is stored in the hot medium box; when the electromagnetic valve is detected to be opened, the medium with the acquired heat energy flows to the lithium battery thermostat and a user heat load under the action of the second circulating pump.
Specifically, the box of cold medium case and hot-medium case can select for use stainless steel intermediate layer box, is equipped with insulation material in the interbedded inner chamber, and this insulation material can select for use and use the aluminium foil as the rubber sponge material of surface. The above-mentioned medium can be liquid, also can be air, because the specific heat capacity ratio of water is higher, consequently, the embodiment of the utility model provides an preferred water is as the medium.
The cold medium of the cold medium tank can be cold water directly obtained from an underground external water supply end or the like, and can also be hot water or hot gas cooled after heat exchange of a user heat load is finished. The user heat load can be a device for consuming heat such as a heater and can be a water-using device such as a bath head.
In order to facilitate the control of the operation of the system, the test control device 108 may include an operation management center, and a data acquisition device and a control device connected to the operation management center;
during specific implementation, the data acquisition device is used for acquiring the operating parameters and the environmental parameters of the solar full-spectrum cogeneration system; the operation management center is used for collecting operation parameters and environment parameters, analyzing, processing and displaying the operation parameters and the environment parameters, and outputting control commands to the control device according to the processed operation parameters and environment parameters; the control device is used for controlling the first circulating pump and the second circulating pump according to the control command.
Specifically, the control device includes a first controller 226a, a second controller 226 b. The first controller is connected with the first circulating pump and the control module through signal lines; the second controller is connected with the second circulating pump and the control module through signal lines; the first controller and the second controller are further connected with the photovoltaic inverter control all-in-one machine through cables.
During specific implementation, the first controller can receive a control command of the operation management center and send a control signal to the first circulating pump according to the control command of the operation management center, the first circulating pump controller can also be controlled by a user, and the first circulating pump can drive medium to flow or prevent the medium from flowing according to the control signal sent by the first controller; this second controller and second circulating pump's theory of operation is the same basically with first controller and first circulating pump, the embodiment of the utility model provides a no longer describe the theory of operation of second controller and second circulating pump.
The first circulating pump and the second circulating pump can also be devices such as valves and the like which can receive external control, such as water gates and the like, for example, a water gate can be further arranged on a connecting passage of the heat medium box and the user heat load, and when the water gate is opened, the heat medium can also directly flow to the user heat load under the action of gravitational potential energy.
For convenience of understanding, the embodiment exemplifies a process that the operation management center cooperates with the control device to control the operation of the solar full-spectrum cogeneration system, for example, in the case of insufficient direct solar light, such as rainy weather, the operation management center controls the concentrated photovoltaic photo-thermal device to shorten the operation time, and in the case of sufficient direct solar light, the operation management center controls the concentrated photovoltaic photo-thermal device to prolong the operation time so as to obtain the maximum solar radiation energy. When the water temperature and/or the water level of the heat medium box are/is lower than the preset lowest water temperature and water level value, the first circulating pump can be triggered to convey the cold medium to the concentrating photovoltaic photo-thermal device for heat energy conversion. The above-mentioned parameter that only gathers according to data acquisition device for operation management center monitors several embodiments of heating power supply device, spotlight photovoltaic light and heat device and power supply device, and concrete operation management center's work content can be set for according to actual conditions, the embodiment of the utility model provides a do not restrict to this.
Further, the operation management center comprises an operation center 228, and a data acquisition module 230, a control module 232 and a human-computer interface 234 which are connected with the operation center;
during specific implementation, the data acquisition module is used for collecting the operation parameters and the environmental parameters acquired by the data acquisition device and transmitting the operation parameters and the environmental parameters to the operation center; the operating parameters and environmental parameters at least include solar irradiance, ambient temperature, inlet water temperature, outlet water temperature, mass flow rate, wind speed, output electrical power, and the like; the data acquisition module can comprise at least one of a solar radiation meter, a temperature acquisition device, a flow meter, an anemometer, an electric energy meter, a liquid level acquisition device and the like;
the operation center is used for sending a control command to the control module according to the operation parameters and the environment parameters; the control module is used for configuring the power supply device, the heat supply device and the test control device according to the control command; the operation center is also used for predicting the system operation state of the operation parameters and the environment parameters according to a precompiled system prediction algorithm and sending the system operation state to the human-computer interface; the human-computer interface is used for displaying the running state of the system so as to monitor the running states of the concentrating photovoltaic photo-thermal device, the heat supply device and the power supply device.
Wherein, the system described in fig. 2 depicts a solar radiation meter, a temperature acquisition device, a flow meter, an anemometer, an electric energy meter and a liquid level acquisition device;
specifically, the solar radiation meter is used for detecting the radiation energy of external solar radiation energy; the flow meter is used for detecting the flow rate of the medium stored in the medium pipeline; the anemometer is used for detecting the external wind speed; the electric energy meter is used for detecting the electric quantity stored by the electric power supply device; the temperature acquisition device is used for detecting the temperature of the medium and the environment; the liquid level acquisition device is used for detecting the liquid level height of the medium in the cold medium box and the hot medium box.
Further, the temperature acquisition device comprises a first thermometer, a second thermometer and an environmental thermometer; during specific implementation, the first thermometer is arranged on a pipeline of a medium pipeline between the cold medium box and the concentrating photovoltaic photo-thermal array; the second thermometer is installed on a pipeline of a medium pipeline between the heat medium box and the concentrating photovoltaic photo-thermal array.
The liquid level acquisition device comprises a first liquid level meter and a second liquid level meter; when the liquid level meter is specifically realized, the first liquid level meter is arranged on the inner wall of the cold medium box; the second liquid level meter is arranged on the inner wall of the heat medium box.
Further, the solar irradiance meter 401 is configured to obtain parameters such as the illuminance of direct solar radiation and the scattered irradiance; the first thermometer 402 is used for acquiring the temperature of the medium at the inlet of the concentrating photovoltaic photo-thermal array, and the second thermometer 403 is used for acquiring the temperature of the medium at the outlet of the concentrating photovoltaic photo-thermal array; an ambient thermometer 404 for detecting ambient temperature; the flow meter 405 is used to detect the media flow mass flow rate in the system; the electric energy meter 406 is used for detecting the output photoelectric power of the concentrating photovoltaic photo-thermal array; the anemometer 407 is used to detect the ambient wind speed; the first level gauge 408 is used for detecting the level of the medium in the cold medium tank; the second level gauge 409 is used to detect the level of the medium in the thermal medium tank.
Based on the solar full-spectrum cogeneration system shown in fig. 2, solar direct light is utilized to gather and convert solar radiation energy through the concentrating photovoltaic photo-thermal unit array to generate electric energy and heat energy. The electric energy passes through the cable, passes through the photovoltaic inversion control all-in-one machine, and is stored in the lithium battery through the cable; electric energy in the lithium battery enters the photovoltaic inversion control all-in-one machine through a cable to output alternating current, and the alternating current is directly supplied to the first circulating pump, the second circulating pump, the tracking equipment, the operation management center, the user electric load, the data acquisition device and the control device through the cable to operate and use. The heat energy takes a medium as a carrier, under the drive of a first circulating pump, a cold medium absorbs the heat energy generated by the cold medium through a concentrating photovoltaic photo-thermal unit array and is converted into a heat medium, the heat medium enters a heat medium box through a pipeline, and under the drive of a second circulating pump, the heat medium box flows through an electromagnetic valve and then passes through a battery thermostat, so that a lithium battery works under the constant temperature condition, and/or the heat medium flows through an external user heat load and then supplies energy to the external user heat load in a heat exchange or direct heat dissipation mode; the heat medium flows through the battery thermostat and/or external user heat load and then is converted into cold medium, and the cold medium enters the cold medium box through the pipeline, so that the medium is recycled.
In addition, the solar full-spectrum cogeneration system can also be electrically connected with a main power grid to output electric energy to the main power grid or receive the electric energy of the main power grid; and according to the actual situation, the solar full-spectrum cogeneration system can switch the connection state with the main power grid.
The solar full-spectrum combined heat and power system gets rid of dependence on external electric energy, can utilize solar radiation energy to convert electric energy and heat energy, directly drives the system to work by utilizing the electric energy obtained by conversion, ensures that system equipment operates under ideal conditions by utilizing the heat energy obtained by conversion, realizes efficient utilization of full-spectrum solar energy, and has a new independent and independent operation function without auxiliary support of external electric energy and heat energy.
Further, the system may configure its own device by using an energy storage configuration method, referring to a flowchart of an energy storage configuration method shown in fig. 3, where the energy storage configuration method includes the following steps:
step S502, acquiring electrical parameters of the concentrating photovoltaic photo-thermal device; the electrical parameters comprise short circuit current, open circuit voltage and standard output power;
specifically, in the process of acquiring the electrical parameters, the open-circuit voltage V of the concentrating photovoltaic photo-thermal array can be measured by the IV curve tester0And short-circuit current I0And concentrating photovoltaicsStandard output power P of photothermal array0Collecting;
step S504, adjusting the power supply device according to the electrical parameters of the concentrating photovoltaic photo-thermal device;
specifically, the maximum input current I of the power supply device is adjusted according to the electrical parametersmaxMaximum input voltage VmaxAnd maximum input power PmaxWherein, Imax≥I0、Vmax≥V0、Pmax≥P0In the process of adjusting the power supply device, the photovoltaic inverter control all-in-one machine inside the power supply device is generally adjusted.
Step S506, according to the running energy consumption of the solar full-spectrum cogeneration system, the electric capacity which can be stored by the electric power supply device; in configuring the electric capacity of the power supply device, it is usually implemented by configuring a lithium battery inside the power supply device.
Further, the step of operating the energy consumption comprises:
the test control system obtains the operation power and the operation time of the first thermal cycle control unit, the second thermal cycle control unit, the test control system and the tracking device, and calculates the operation energy consumption of the concentrating photovoltaic photo-thermal device, wherein the expression of the operation energy consumption is as follows:
Qde＝Qdce1+Qdce2+Qdoe+Qdte
＝Pdce1×Tdcp+Pdoe×Tdo+Pdce2×Tdcu+Pdte×Tdcp
wherein Q isdeFor the power consumption, Q, of a concentrating photovoltaic photothermal device operating on a single daydce1For the power consumption, Q, of the first circulation pump operating on a single daydoePower consumption for operating the management center on a single day; qdce2The power consumption for the single-day operation of the second circulating pump; qdteTo track power consumption of a device operating on a single day; pdce1The running power of the first circulating pump; t isdcpThe heat production cycle time within a single day; pdoeFor operation managementA central single-day operating power; t isdoThe operation time of the management center is single day; pdce2The power is operated for the second circulating pump on a single day; t isdcuThermal cycling time for a single day; pdteTracking the device single day operating power.
Further, the capacity of the lithium battery of the power supply device is configured according to the operation energy consumption of the concentrating photovoltaic photo-thermal device, and the capacity is generally set to be larger than the operation energy consumption of the solar full-spectrum cogeneration system for two consecutive days, and the capacity QbCan be set as follows: qb≥Qde_1+Qde_2Wherein Q isde_1Energy consumption for the first day operation of the solar full-spectrum cogeneration system; qde_2And energy consumption is consumed for the operation of the solar full-spectrum combined heat and power system in the next day.
Step S508, acquiring a heat energy loss parameter and an actual heat demand parameter of the heat supply device;
the thermal energy storage parameter is expressed by the following formula:
Qh＝C(T-T1)Vρ
wherein T is the lowest possible temperature value of the thermal medium in the thermal medium box in two consecutive days; t is1The lowest temperature of the cold medium is obtained from the outside for the cold medium tank. Wherein T is an initial temperature value T of the thermal medium2The difference from the maximum value of the drop amplitude Δ T. V is the capacity of the heat medium tank, C is the specific heat capacity of the medium, T1Is the temperature of the cold medium and ρ is the density of the medium; the actual heat demand parameter is typically the maximum heat demand Q for two consecutive daysdh1。
Step S510, calculating the minimum heat storage quantity which can be stored by the heat supply device according to the heat energy loss parameter and the actual heat demand parameter;
specifically, the capacity V of the heat medium tank needs to satisfy:
Qh＝C(T-T1)Vρ≥2Qdh1
step S512, configuring the capacity space of the storable medium in the heat supply device according to the minimum heat storage quantity;
the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus and systems according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A solar full spectrum cogeneration system, comprising: the device comprises a concentrating photovoltaic photo-thermal device, an electric power supply device, a heating power supply device and a test control device which are connected in sequence;
the concentrating photovoltaic photo-thermal device is also connected with the heat supply device and the test control device;
the power supply device is connected with the test control device;
the concentrating photovoltaic photo-thermal device is used for converting full-spectrum solar radiation energy into electric energy and heat energy and storing the heat energy to the heat supply device; and storing electrical energy to the electrical power supply;
the power supply device is used for driving the concentrating photovoltaic photo-thermal device, the heating power supply device, the test control device and the user electric load to work by stored electric energy;
the heat supply device is used for providing the stored heat energy to a user heat load and the power supply device so as to ensure that the power supply device outputs electric energy at a preset working temperature;
the test control device is used for monitoring and/or configuring the operation parameters of the concentrating photovoltaic photo-thermal device and the heat supply device and monitoring the operation state of the power supply device.
2. The system of claim 1, wherein the concentrated photovoltaic photothermal device comprises a concentrated photovoltaic photothermal array, and a tracking device coupled to the concentrated photovoltaic photothermal array;
the concentrating photovoltaic photo-thermal array comprises a plurality of groups of concentrating photovoltaic photo-thermal units, wherein the plurality of groups of concentrating photovoltaic photo-thermal units are connected in a preset series-parallel mode, a concentrator is arranged at the top end of each concentrating photovoltaic photo-thermal unit, and a photovoltaic photo-thermal assembly is arranged at the bottom end of each concentrating photovoltaic photo-thermal unit; the concentrating photovoltaic photo-thermal unit is arranged on the bracket;
the concentrating photovoltaic photo-thermal unit is used for concentrating the solar radiation energy by using the concentrator and then converting the solar radiation energy into electric energy and heat energy by using the photovoltaic photo-thermal component;
the tracking equipment is used for adjusting the inclination angle of the support, so that the included angle between the direct solar light and the incident light hole of the condenser is a preset angle.
3. The system of claim 1, wherein the power supply device comprises a photovoltaic inversion control all-in-one machine and a lithium battery connected with the photovoltaic inversion control all-in-one machine;
the photovoltaic inversion control all-in-one machine is connected with the concentrating photovoltaic photo-thermal device and the heating power supply device;
the photovoltaic inversion control all-in-one machine is used for controlling the concentrating photovoltaic photo-thermal device to output electric energy at a set maximum power and storing the electric energy to the lithium battery;
the lithium battery is used for providing stored electric energy to the concentrating photovoltaic photo-thermal device, the heating power supply device, the test control device and the user electric load through the photovoltaic inversion control all-in-one machine and receiving heat energy transmitted by the heating power supply device so as to ensure that the lithium battery outputs electric energy at a preset working temperature.
4. The system of claim 1, wherein the heat supply device comprises a cold medium tank, a first circulating pump, a hot medium tank, a second circulating pump, an electromagnetic valve and a lithium battery thermostat which are sequentially connected by a medium pipeline;
the first circulating pump is connected with the thermal medium box through the concentrating photovoltaic photo-thermal device;
the medium stored in the medium pipeline flows through the concentrating photovoltaic photo-thermal device from the cold medium box under the action of the first circulating pump so as to obtain the heat energy converted by the concentrating photovoltaic photo-thermal device, and the medium after the heat energy is obtained is stored in the hot medium box; when the electromagnetic valve is detected to be opened, the medium with the acquired heat energy flows to the lithium battery thermostat and a user heat load under the action of the second circulating pump.
5. The system according to claim 4, wherein the test control device comprises an operation management center, and a data acquisition device and a control device which are connected with the operation management center;
the data acquisition device is used for acquiring the operating parameters and the environmental parameters of the solar full-spectrum combined heat and power system;
the operation management center is used for collecting the operation parameters and the environment parameters, analyzing, processing and displaying the operation parameters and the environment parameters, and outputting control commands to the control device according to the processed operation parameters and environment parameters;
the control device is used for controlling the first circulating pump and the second circulating pump according to the control command.
6. The system of claim 5, wherein the operation management center comprises a computing center, and a data acquisition module, a control module and a human-computer interface which are connected with the computing center;
the data acquisition module is used for collecting the operation parameters and the environment parameters acquired by the data acquisition device and transmitting the operation parameters and the environment parameters to the operation center;
the operation center is used for sending a control command to the control module according to the operation parameters and the environment parameters;
the control module is used for configuring the power supply device, the heat supply device and the test control device according to the control command;
the operation center is also used for predicting the system operation state of the operation parameters and the environment parameters according to a precompiled system prediction algorithm and sending the system operation state to the human-computer interface;
the human-computer interface is used for displaying the running state of the system so as to monitor the running states of the concentrating photovoltaic photo-thermal device, the heat power supply device and the power supply device.
7. The system of claim 5, wherein the data collection device comprises a solar irradiance meter, a temperature collection device, a flow meter, an anemometer, an electric energy meter, a liquid level collection device;
the solar radiation meter is used for detecting the radiation energy of external solar radiation energy;
the flow meter is used for detecting the flow rate of the medium stored in the medium pipeline;
the anemometer is used for detecting the external wind speed;
the electric energy meter is used for detecting the amount of electricity stored by the electric power supply device;
the temperature acquisition device is used for detecting the temperature of the medium and the environment;
the liquid level acquisition device is used for detecting the liquid level height of the medium in the cold medium box and the hot medium box.
8. The system of claim 7, wherein the temperature acquisition device comprises a first thermometer, a second thermometer, and an environmental thermometer;
the first thermometer is arranged on a pipeline of a medium pipeline between the cold medium box and the concentrating photovoltaic photo-thermal array;
the second thermometer is installed on a pipeline of a medium pipeline between the heat medium box and the concentrating photovoltaic photo-thermal array.
9. The system of claim 7, wherein the fluid level collection device comprises a first fluid level gauge and a second fluid level gauge;
the first liquid level meter is arranged on the inner wall of the cold medium box;
the second liquid level meter is arranged on the inner wall of the heat medium box.
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| CN109724269B (en) * | 2019-02-20 | 2024-03-22 | 清华四川能源互联网研究院 | Solar full-spectrum cogeneration system and energy storage configuration method |
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