CN205620455U - Operating condition detection device and photovoltaic electrical apparatus system of photovoltaic board - Google Patents
Operating condition detection device and photovoltaic electrical apparatus system of photovoltaic board Download PDFInfo
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- CN205620455U CN205620455U CN201520874193.3U CN201520874193U CN205620455U CN 205620455 U CN205620455 U CN 205620455U CN 201520874193 U CN201520874193 U CN 201520874193U CN 205620455 U CN205620455 U CN 205620455U
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Abstract
The utility model discloses an operating condition detection device and photovoltaic electrical apparatus system of photovoltaic board. The operating condition detection device of this photovoltaic board includes: photovoltaic equipment sets up in photovoltaic electrical apparatus system, is connected with the one end of dc bus, including photovoltaic board and modulator for modulating signal loading to the dc bus that will obtain by the state parameter modulation of photovoltaic board, controlgear is connected with the other end of dc bus, including the demodulator for carry out the state parameter that the demodulation obtained the photovoltaic board through the demodulator to modulating signal. Through the utility model discloses, the effect that improves the communication quality between photovoltaic equipment and the controlgear has been reached.
Description
Technical field
This utility model relates to appliance field, in particular to working state detection device and the photovoltaic electric system of a kind of photovoltaic panel.
Background technology
At present, along with constantly increasing the weight of and the continuous deterioration of environmental problem of global energy crisis, various regenerative resources and the development of green energy resource and application, for the development of social industry, have become more and more urgent.Therefore, energy-saving product and the development of environmentally friendly machine and application become the main force of market development.Photovoltaic electric system, such as, PV air-conditioner system, for the representative of new forms of energy air-conditioning, its technology has developed more ripe.
But, the photovoltaic apparatus of photovoltaic electric system and control equipment do not have Direct Communication, or additionally erection bus carries out communication.When control equipment and photovoltaic apparatus do not have Direct Communication, host computer cannot know the specific works state of the photovoltaic panel in photovoltaic apparatus；When control equipment and photovoltaic apparatus additionally set up bus carry out communication time, increase the cost of photovoltaic electric system and affect the aesthetic property of photovoltaic electrical equipment system structure.Such as, when the control equipment of PV air-conditioner system does not has Direct Communication with photovoltaic panel, the host computer of PV air-conditioner system cannot know the specific works state of photovoltaic panel, so that the duty of photovoltaic panel cannot be monitored by host computer；When PV air-conditioner system additionally sets up bus, the photovoltaic apparatus of PV air-conditioner system and the communication controlling equipment can be realized, but, the communication bus of distance makes the communication quality of PV air-conditioner system decline, the state parameter of photovoltaic panel cannot normal transmission to controlling equipment, and add the cost of PV air-conditioner system and reduce the aesthetic property of structure of PV air-conditioner system.
For the long problem causing communication quality to decline of photovoltaic apparatus in correlation technique and the communication bus between control equipment, effective solution is the most not yet proposed.
Utility model content
Main purpose of the present utility model is to provide the working state detection device of a kind of photovoltaic panel and photovoltaic electric system, and at least to solve, communication bus between photovoltaic apparatus and control equipment is long causes communication quality to decline problem.
To achieve these goals, according to an aspect of the present utility model, it is provided that the working state detection device of a kind of photovoltaic panel.The working state detection device of this photovoltaic panel includes: photovoltaic apparatus, it is arranged in photovoltaic electric system, it is connected with one end of dc bus, including photovoltaic panel and manipulator, for being loaded onto dc bus by being modulated, by the state parameter of photovoltaic panel, the modulated signal obtained；Control equipment, is connected with the other end of dc bus, including demodulator, for modulated signal being demodulated obtaining the state parameter of photovoltaic panel by demodulator.
Further, this photovoltaic apparatus also includes: first sensor, for detecting the duty of photovoltaic panel；First controller, is connected with first sensor, and for photovoltaic panel being performed control according to the state parameter of photovoltaic panel, wherein, input and first controller of manipulator are connected, and the outfan of manipulator is connected with dc bus.
Further, this first sensor includes following any one or more sensor: voltage sensor, for detecting the voltage status parameter of photovoltaic panel；Position sensor, for detecting the location status parameter of photovoltaic panel；And temperature sensor, for detecting the state of temperature parameter of photovoltaic panel.
Further, this control equipment also includes: the second sensor, for detecting the output signal of dc bus；Second controller, is connected with the outfan of the second sensor and demodulator, for judging whether the state parameter of photovoltaic panel is successfully transmitted to control equipment according to the output signal of dc bus；Host computer, is connected with second controller, for the duty of photovoltaic panel is performed monitoring.
Further, this second sensor is voltage sensor, for detecting the output voltage of dc bus.
Further, this control equipment also includes that inverter, inverter are connected with photovoltaic panel and second controller, for receiving the output signal of second controller.
Further, this manipulator is modulation chip, and this demodulator is demodulation chip.
Further, this dc bus is middle pressure dc bus.
To achieve these goals, according to another aspect of the present utility model, additionally providing a kind of photovoltaic electric system, this photovoltaic electric system includes the working state detection device of the photovoltaic panel in this utility model.
Further, this photovoltaic electric system is PV air-conditioner system.
In this utility model, photovoltaic apparatus is arranged in photovoltaic electric system, is connected with one end of dc bus, and photovoltaic apparatus includes photovoltaic panel and manipulator, for being loaded onto dc bus by being modulated, by the state parameter of photovoltaic panel, the modulated signal obtained；Control equipment, it is connected with the other end of dc bus, including demodulator, for modulated signal being demodulated obtaining the state parameter of photovoltaic panel by demodulator, solve the long problem causing communication quality to decline of the communication bus between photovoltaic apparatus and control equipment, thus reach to improve the effect of the communication quality between photovoltaic apparatus and control equipment.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing being further appreciated by of the present utility model, and schematic description and description of the present utility model is used for explaining this utility model, is not intended that improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the schematic diagram of the working state detection device of the photovoltaic panel according to this utility model first embodiment；
Fig. 2 is the schematic diagram of the working state detection device of the photovoltaic panel according to this utility model the second embodiment；
Fig. 3 is the schematic diagram of the change in voltage of the non-loading wave of the dc bus according to this utility model embodiment；And
Fig. 4 is the schematic diagram that the dc bus according to this utility model embodiment adds the change in voltage of carrier wave.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
In order to make those skilled in the art be more fully understood that the application scheme, below in conjunction with the accompanying drawing in the embodiment of the present application, technical scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only the embodiment of the application part rather than whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, all should belong to the scope of the application protection.
It should be noted that term " first " in the description and claims of this application and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that the data of so use can be exchanged in the appropriate case, in order to embodiments herein described herein.In addition, term " includes " and " having " and their any deformation, it is intended to cover non-exclusive comprising, such as, contain series of steps or the process of unit, device, system, product or equipment be not necessarily limited to those steps or the unit clearly listed, but can include the most clearly listing or for intrinsic other step of these processes, device, product or equipment or unit.
This utility model provides the working state detection device of a kind of photovoltaic panel.
Fig. 1 is the schematic diagram of the working state detection device of the photovoltaic panel according to this utility model first embodiment.As it is shown in figure 1, the working state detection device of this photovoltaic panel includes: photovoltaic apparatus 10 and control equipment 20.
Photovoltaic apparatus 10, is arranged in photovoltaic electric system, is connected with one end of dc bus, including photovoltaic panel and manipulator, for being loaded onto dc bus by being modulated, by the state parameter of photovoltaic panel, the modulated signal obtained.Specifically, detected the duty of photovoltaic panel by photovoltaic apparatus 10, obtain the state parameter of photovoltaic panel, by manipulator, the state parameter of photovoltaic panel is performed modulation, obtain modulated signal, and modulated signal is loaded onto dc bus.Photovoltaic panel, namely, solar panel, cruelly leak for one and will produce galvanic TRT in the sun, the thin body solid photovoltaic cell composition that almost all is made with semiconductor material, luminous energy is directly translated into controlling electric energy loaded work piece by the photovoltaic effect utilizing interface, or is sent in accumulator store.Photovoltaic panel does not has a part of activity, and therefore photovoltaic panel the most reliably, stably use its life-span length, can install easy maintenance.For example, photovoltaic panel being arranged in PV air-conditioner system, photovoltaic panel utilizes luminous energy to provide lasting electric energy for PV air-conditioner system, makes that PV air-conditioner system is reliable, stable, runs enduringly.
Photovoltaic apparatus 10 also includes first sensor and the first controller.Photovoltaic apparatus 10 is by the state parameter of first sensor detection photovoltaic panel, and such as, photovoltaic apparatus 10 detects photovoltaic panel voltage status parameter, state of temperature parameter and location status parameter operationally by first sensor.Alternatively, first sensor includes voltage sensor, temperature sensor and position sensor.The photovoltaic apparatus 10 voltage status parameter by voltage sensor senses photovoltaic panel, by the state of temperature parameter of temperature sensor detection photovoltaic panel, by the location status parameter of position sensor detection photovoltaic panel.First controller of photovoltaic apparatus 10 is connected with first sensor, after photovoltaic apparatus 10 is by the state parameter of first sensor detection photovoltaic panel, photovoltaic apparatus 10 receives the state parameter of photovoltaic panel by the first controller, and according to the state parameter of photovoltaic panel, photovoltaic panel is performed control, such as, the location status parameter that photovoltaic apparatus 10 is received by the first controller performs control to the position of photovoltaic panel, photovoltaic panel is made to receive effective luminous energy in effective surface area, thus effective luminous energy is changed into the effective electric energy of photovoltaic power supply system to support the properly functioning of photovoltaic power supply system.
Input and first controller of the manipulator of photovoltaic apparatus 10 are connected, and the outfan of manipulator is connected with dc bus.After photovoltaic apparatus 10 receives the state parameter of photovoltaic panel by the first controller, photovoltaic apparatus 10 performs modulation by manipulator to the state parameter of photovoltaic panel, obtains modulated signal, and modulated signal is loaded onto dc bus, wherein, modulated signal carries the state parameter of photovoltaic panel.Specifically, the state parameter of photovoltaic panel is also loaded onto on dc bus by photovoltaic apparatus 10 by manipulator, by dc bus transmission to controlling equipment 20, photovoltaic apparatus 10 and the communication controlling equipment 20, that is, the state parameter of the photovoltaic panel of photovoltaic apparatus 10 passes through dc bus to the transmission controlling equipment 20.AC conversion can be become unidirectional current to transmit big electric current by dc bus by photovoltaic apparatus, thus improve the power consumption efficiency of photovoltaic electric system by dc bus, and the safety and reliability of photovoltaic electric system work.
Control equipment 20, is connected with the other end of dc bus, including demodulator, for modulated signal being demodulated obtaining the state parameter of photovoltaic panel by demodulator.
Control equipment 20 includes the second sensor, second controller and host computer.Wherein, the second sensor, for detecting the output signal of dc bus；Second controller, is connected with the outfan of the second sensor and demodulator, for judging whether the state parameter of photovoltaic panel is successfully transmitted to control equipment according to the output signal of dc bus；Host computer, is connected with second controller, for the duty of photovoltaic panel is performed monitoring.
Control equipment 20 is by the output signal of the second sensor detection dc bus, it is preferable that the second sensor is voltage sensor, controls the equipment 20 output voltage by voltage sensor senses dc bus.
Control equipment 20 is connected by the outfan of second controller and the second sensor and demodulator, judges according to the output signal of dc bus whether the state parameter of photovoltaic panel is successfully transmitted to control equipment.Specifically, control equipment 20, by demodulator, the modulated signal from dc bus is performed demodulation, obtain the state parameter of photovoltaic panel.The state parameter of photovoltaic panel includes the voltage status parameter of photovoltaic panel, the state of temperature parameter of photovoltaic panel and the location status parameter etc. of photovoltaic panel.Demodulator can be decoding chip, the modulated signal from dc bus is performed demodulation, obtains demodulated signal, extracts the state parameter of photovoltaic panel from demodulated signal, so that the state parameter transmission of the photovoltaic panel in photovoltaic apparatus 10 is to controlling equipment 20.By demodulator, the modulated signal from dc bus is performed demodulation controlling equipment 20, after obtaining the state parameter of photovoltaic panel, according to the output signal of dc bus, control equipment 20 judges whether the state parameter of photovoltaic panel is successfully transmitted to control equipment 20 by second controller, obtain judged result.Alternatively, the communication cycle between photovoltaic apparatus 10 and control equipment 20 is predetermined period, and predetermined period includes adjacent first time period, the second time period and the 3rd time period.On the second time period load-modulate signal to dc bus, or, modulated signal is performed demodulation, by voltage sensor at the output voltage of first time period detection dc bus, obtains the first magnitude of voltage；Detect the output voltage of dc bus in the 3rd time period, obtain the second magnitude of voltage, the second magnitude of voltage be on the second time period load-modulate signal to dc bus after, or, modulated signal is performed the output voltage of dc bus obtained after demodulation.Judge that whether the difference of the first magnitude of voltage and the second magnitude of voltage is more than predetermined threshold value by second controller；If the difference of the first magnitude of voltage and the second magnitude of voltage is more than predetermined threshold value, it is determined that the unsuccessful transmission of state parameter of photovoltaic panel is to controlling equipment 20, that is, photovoltaic apparatus 10 and the communication information bust this of control equipment 20；If the difference of the first magnitude of voltage and the second magnitude of voltage is less than or equal to predetermined threshold value, it is determined that the state parameter of photovoltaic panel is successfully transmitted to control equipment 20, that is, photovoltaic apparatus 10 and the communication information transmission success of control equipment 20.
Control equipment 20 is connected with second controller by host computer, and the duty of photovoltaic panel is performed monitoring.After judging whether the state parameter of photovoltaic panel is successfully transmitted to control equipment 20 by second controller according to the output signal of dc bus, by second controller, control equipment 20 will determine that result is uploaded to host computer, namely, host computer receives the unsuccessful transmission of state parameter of photovoltaic panel to the judged result controlling equipment 20, or, the state parameter of photovoltaic panel is successfully transmitted to the judged result of control equipment 20.Host computer also receives information and the information of demodulator collection of the second sensor acquisition, and to its further display.Host computer performs monitoring according to judged result to the duty of photovoltaic panel, when host computer receives the judged result of the unsuccessful transmission of state parameter extremely control equipment 20 of photovoltaic panel, the unsuccessful transmission of state parameter of host computer display photovoltaic panel is to the information controlling equipment 20, control photovoltaic apparatus 10 and again detect the state parameter of photovoltaic panel, obtain the state parameter of photovoltaic panel, by manipulator, the state parameter of photovoltaic panel is performed modulation, obtain modulated signal, and modulated signal is loaded onto dc bus, by dc bus by modulated signal transmission to controlling equipment 20.When the state parameter of host computer reception photovoltaic panel is successfully transmitted to the judged result of control equipment 20, the state parameter of host computer display photovoltaic panel is successfully transmitted to the information of control equipment 20, alternatively, host computer shows information and the information of demodulator collection of the second sensor acquisition, and the duty of photovoltaic panel is performed monitoring in real time, so that management personnel understand the state parameter of photovoltaic panel in real time whether within the scope of normal state parameter, make management personnel when photovoltaic electric system operation irregularity, to its timely control, thus avoid photovoltaic electrical equipment system malfunctions, and prevent fault and deteriorate further, photovoltaic electric system is preferably safeguarded.Host computer can also control the duty of photovoltaic panel further according to the state parameter of photovoltaic panel, makes photovoltaic panel export normal state parameter, improves the monitoring property of photovoltaic panel, so that photovoltaic panel is safe and stable, reliably work.
The working state detection device of the photovoltaic panel of this embodiment also includes inverter.This inverter is connected with photovoltaic panel and second controller, for receiving the output signal of second controller.
Preferably, the dc bus of this embodiment is that middle pressure dc bus, photovoltaic apparatus 10 and control equipment 20 carry out communication based on medium voltage DC line of force carrier wave.
In the working state detection device of this photovoltaic panel, the working state detection device of photovoltaic panel includes photovoltaic apparatus and control equipment, photovoltaic apparatus is arranged in photovoltaic electric system, it is connected with one end of dc bus, including photovoltaic panel and manipulator, photovoltaic apparatus is loaded onto dc bus by being modulated, by the state parameter of photovoltaic panel, the modulated signal obtained；Control equipment, it is connected with the other end of dc bus, including demodulator, control equipment is demodulated obtaining the state parameter of photovoltaic panel by demodulator to modulated signal, it is achieved thereby that the state parameter of the photovoltaic panel of photovoltaic apparatus is to the transmission of control equipment, improve the communication quality between photovoltaic apparatus and control equipment.
Fig. 2 is the schematic diagram of the working state detection device of the photovoltaic panel according to this utility model the second embodiment.As in figure 2 it is shown, the working state detection device of this photovoltaic panel includes: photovoltaic panel 30, first sensor 40, the first controller 50, modulation chip 60, the second sensor 70, decoding chip 80, second controller 90, host computer 100 and inverter 110.
The working state detection device of photovoltaic panel includes photovoltaic apparatus.Specifically, photovoltaic apparatus includes photovoltaic panel 30, first sensor 40, the first controller 50 and modulation chip 60.
Photovoltaic panel 30, that is, solar panel, is arranged in photovoltaic electric system.Photovoltaic electric system utilizes photovoltaic effect to be operated when luminous energy is directly translated into electric energy in photovoltaic panel.Photovoltaic panel 30 does not has a part of activity, and therefore photovoltaic panel 30 the most reliably, stably use its life-span length, can install easy maintenance.Such as, photovoltaic panel 30 is arranged in PV air-conditioner system, and photovoltaic panel 30 utilizes luminous energy to provide lasting electric energy for PV air-conditioner system, output state parameter, such as, voltage status parameter, state of temperature parameter and location status parameter etc., make that PV air-conditioner system is reliable, stable, run enduringly.
First sensor 40, for detecting the state parameter of photovoltaic panel 30, alternatively, first sensor 40 includes voltage sensor, temperature sensor and position sensor.Photovoltaic panel 30 voltage status parameter operationally is detected, by the state of temperature parameter of temperature sensor detection photovoltaic panel 30, by the location status parameter of position sensor detection photovoltaic panel 30 by first sensor 40.
First controller 50, it is connected with first sensor 40, for receiving the state parameter of photovoltaic panel 30, and according to the state parameter of photovoltaic panel 30, photovoltaic panel is performed control, such as, the first controller 50 receives the voltage status parameter of photovoltaic panel 30, state of temperature parameter and location status parameter.Alternatively, first controller 50 performs control according to the location status parameter of photovoltaic panel 30 to the position of photovoltaic panel 30, so that photovoltaic panel 30 is adjusted to optimum position state, effective luminous energy is changed into the effective electric energy of photovoltaic power supply system to support the properly functioning of photovoltaic power supply system.
Modulation chip 60, input and first controller 50 of modulation chip 60 are connected, the outfan of modulation chip 60 is connected with dc bus, for the state parameter of photovoltaic panel 30 is performed modulation, obtain modulated signal, and modulated signal is loaded onto dc bus, specifically, the state parameter of photovoltaic panel 30 is loaded onto on dc bus by modulation chip 60, such as, the voltage status parameter of photovoltaic panel 30, state of temperature parameter, location status parameter etc. is loaded onto on dc bus.Preferably, dc bus is middle pressure dc bus, by the state parameter of middle pressure dc bus transmission photovoltaic panel 30 to controlling equipment, thus improves the power consumption efficiency of photovoltaic electric system, and the safety and reliability of photovoltaic electric system work.
The working state detection device of photovoltaic panel includes control equipment.Specifically, control equipment includes the second sensor 70, decoding chip 80, second controller 90 and host computer 100.
Second sensor 70, for detecting the output signal of dc bus.Alternatively, the second sensor 70 is voltage sensor, controls the equipment output voltage by voltage sensor senses dc bus.Communication cycle between photovoltaic apparatus and control equipment is predetermined period, and predetermined period includes adjacent first time period, the second time period and the 3rd time period.On the second time period load-modulate signal to dc bus, or, modulated signal is performed demodulation.By voltage sensor at the output voltage of first time period detection dc bus, obtain the first magnitude of voltage；Detected the output voltage of dc bus by voltage sensor in the 3rd time period, obtain the second magnitude of voltage.
Decoding chip 80, is connected with dc bus, and modulated signal is demodulated obtaining the state parameter of photovoltaic panel 30.Specifically, decoding chip 80 performs demodulation to modulated signal, obtain demodulated signal, and from demodulated signal, extract the state parameter of photovoltaic panel 30, thus obtain the voltage status parameter of photovoltaic panel 30, the state of temperature parameter of photovoltaic panel 30 and the location status parameter etc. of photovoltaic panel 30, the state parameter making the photovoltaic panel 30 in photovoltaic apparatus is transmitted to control equipment by dc bus, it is achieved that photovoltaic apparatus and the Direct Communication of control equipment.
Second controller 90, it is connected with the outfan of the second sensor 70 and decoding chip 80, for judging according to the output signal of dc bus whether the state parameter of photovoltaic panel 30 is successfully transmitted to control equipment, receive the state parameter of the photovoltaic panel 30 of decoding chip 80 output.Specifically, judge that whether the difference of the first magnitude of voltage and the second magnitude of voltage is more than predetermined threshold value by second controller 90；If the difference of the first magnitude of voltage and the second magnitude of voltage is more than predetermined threshold value, it is determined that the unsuccessful transmission of state parameter of photovoltaic panel is to controlling equipment；If the difference of the first magnitude of voltage and the second magnitude of voltage is less than or equal to predetermined threshold value, it is determined that the state parameter of photovoltaic panel is successfully transmitted to control equipment.
For example, Fig. 3 is the schematic diagram of change in voltage of the non-loading wave of the dc bus according to this utility model embodiment.As shown in Figure 3, corresponding change is there is by the degree of strength of sunlight in the output voltage of photovoltaic panel along with photovoltaic panel, t1, t2 represent photovoltaic panel by different illumination intensity sunlight the most in the same time, Δ V represent photovoltaic panel in the output voltage in t1 moment and photovoltaic panel in the voltage difference of the output voltage in t2 moment.The instability of the output voltage of photovoltaic panel causes the carrier wave of dc bus to have certain difficulty when transmitting quenched signal.But, the change of the output voltage of photovoltaic panel is smooth, does not typically have step.The t1 moment differ with moment t2 the shortest in the case of, voltage difference delta V is done certain process just can be demodulated modulated signal when demodulation, obtains demodulated signal.
Fig. 4 is the schematic diagram that the dc bus according to this utility model embodiment adds the change in voltage of carrier signal.As shown in Figure 4, between photovoltaic apparatus and control equipment, perform communication, complete the information transmission between photovoltaic apparatus and control equipment, including the transmission of the state parameter of photovoltaic panel.Communication cycle between photovoltaic apparatus and control equipment is predetermined period T.Due to the existence of Δ V, directly all adding carrier signal in a communication cycle, detection when signal may be caused to demodulate is abnormal.Therefore, it is sufficiently small that predetermined period T is set, predetermined period T then includes adjacent first time period Δ t1, the second time period Δ t2 and the 3rd time period Δ t3, voltage at first time period Δ t1 detection dc bus, obtain the first magnitude of voltage, that is, detect the fundamental voltage V1 of DC power line carrier wave in the reference voltage sample region Δ t1 time period；On the second time period Δ t2 load-modulate signal to dc bus, or, at the second time period Δ t2, modulated signal is performed demodulation, that is, on carrier wave district Δ t2 time period load-modulate signal to dc bus, or, modulated signal is performed demodulation；Detect the voltage of dc bus at the 3rd time period Δ t3, obtain the second magnitude of voltage V2, that is, after the information between photovoltaic apparatus and control equipment has been transmitted, detect the voltage V2 of dc bus in the reference voltage check field Δ t3 time period；Judge that whether difference DELTA V of the first magnitude of voltage V1 and the second magnitude of voltage V2 is more than predetermined threshold value；If difference DELTA V of the first magnitude of voltage V1 and the second magnitude of voltage V2 is more than predetermined threshold value, it is determined that in predetermined period, the unsuccessful transmission of the state parameter of photovoltaic panel is to controlling equipment, Communications failure between photovoltaic apparatus and control equipment；If difference DELTA V of the first magnitude of voltage V1 and the second magnitude of voltage V2 is less than or equal to predetermined threshold value, it is determined that in predetermined period, the state parameter of photovoltaic panel is successfully transmitted to control equipment, communication success between photovoltaic apparatus and control equipment.
Host computer 100, is connected with second controller 90, is used for receiving judged result, according to judged result, the state of photovoltaic panel 30 is performed monitoring.Specifically, after according to the output voltage of dc bus, second controller 90 judges whether the state parameter of photovoltaic panel 30 is successfully transmitted to control equipment, the duty of photovoltaic panel 30 is performed monitoring.Host computer 100 receives the unsuccessful transmission of state parameter of photovoltaic panel 30 to the judged result controlling equipment, or, the state parameter of photovoltaic panel 30 is successfully transmitted to the judged result of control equipment, host computer 100 also receives information and the information of decoding chip 80 collection that the second sensor 70 gathers, and to its further display.Host computer 100 performs monitoring according to judged result to the duty of photovoltaic panel 30, when host computer 100 receives the judged result of the unsuccessful transmission of state parameter extremely control equipment of photovoltaic panel 30, host computer 100 shows the state parameter unsuccessful transmission information to control equipment 20 of photovoltaic panel 30；When host computer 100 receives the judged result that the state parameter of photovoltaic panel 30 is successfully transmitted to control equipment, host computer 100 shows that the state parameter of photovoltaic panel 30 is successfully transmitted to the information of control equipment, alternatively, host computer 100 shows information and the information of decoding chip 80 collection of the second sensor 70 collection, and the duty of photovoltaic panel 30 is performed monitoring in real time.Host computer 100 can also control the duty of photovoltaic panel 30 further according to the state parameter of photovoltaic panel 30, makes photovoltaic panel 30 export normal state parameter, improves the monitoring property of photovoltaic panel 30, so that photovoltaic panel 30 is safe and stable, reliably work.
Control equipment also includes inverter 110.Inverter 110 is connected with photovoltaic panel 30 and second controller 100, for receiving the output signal of second controller 90.Inverter 110 is connected by two dc bus with photovoltaic panel 30.The unidirectional current of dc bus is changed into alternating current by inverter 110, receive the output signal of second controller 90, and then exported by three road alternating currents, complete photovoltaic apparatus and the communication based on DC power line carrier wave of control equipment, achieve the communication between photovoltaic apparatus and control equipment, improve the communication quality between photovoltaic apparatus and control equipment.
nullThe working state detection device of this photovoltaic panel is by the state parameter of photovoltaic panel output photovoltaic panel，State parameter by first sensor detection photovoltaic panel，The state parameter of photovoltaic panel is received by the first controller，By modulation chip, the state parameter of photovoltaic panel is performed modulation，Obtain modulated signal，And modulated signal is loaded onto dc bus，Output signal by the second sensor detection dc bus，By decoding chip, modulated signal is performed demodulation and obtain the state parameter of photovoltaic panel，Judge whether the state parameter of photovoltaic panel is successfully transmitted to control equipment by second controller according to the output voltage of dc bus，Judged result is received by host computer，According to judged result, the state of photovoltaic panel is performed monitoring，The output signal of second controller is received by inverter，And then exported by three road alternating currents，It is achieved thereby that the communication between photovoltaic apparatus and control equipment，And then improve the communication quality between photovoltaic apparatus and control equipment.
This utility model embodiment additionally provides a kind of photovoltaic electric system.It should be noted that this photovoltaic electric system includes the working state detection device of the photovoltaic panel of this utility model embodiment.
Photovoltaic apparatus is arranged in photovoltaic electric system, is connected with one end of dc bus.Photovoltaic apparatus includes photovoltaic panel and manipulator.Photovoltaic apparatus is loaded onto dc bus by being modulated, by the state parameter of photovoltaic panel, the modulated signal obtained.Photovoltaic apparatus also includes first sensor and the first controller, duty by first sensor detection photovoltaic panel, it is connected by the first controller first sensor, state parameter according to photovoltaic panel performs control to photovoltaic panel, wherein, input and first controller of manipulator are connected, and the outfan of manipulator is connected with dc bus.Control equipment is arranged in photovoltaic electric system, is connected with the other end of dc bus.Control equipment includes demodulator, by demodulator, modulated signal is demodulated obtaining the state parameter of photovoltaic panel.Control equipment also includes the second sensor, second controller and host computer.Control equipment is by the output signal of the second sensor detection dc bus, it is connected by the outfan of second controller and the second sensor and demodulator, output signal according to dc bus judges whether the state parameter of photovoltaic panel is successfully transmitted to control equipment, preferably, second sensor is voltage sensor, for detecting the output voltage of dc bus, it is connected by the outfan of second controller and the second sensor and demodulator, judges according to the output voltage of dc bus whether the state parameter of photovoltaic panel is successfully transmitted to control equipment.The host computer of control equipment is connected with second controller, and the duty of photovoltaic panel is performed monitoring.
Alternatively, by manipulator, the state parameter of photovoltaic panel is modulated, obtain modulated signal, and modulated signal is loaded onto on dc bus, by voltage before load-modulate signal and after load-modulate signal on the second sensor detection dc bus, determine that the communication between photovoltaic apparatus and control equipment is the most normal by second controller according to the difference of the voltage after load-modulate signal on the fundamental voltage of dc bus carrier signal and dc bus.Alternatively, after modulated signal being loaded onto on dc bus by manipulator, the output voltage of the second sensor detection dc bus, by demodulator, modulated signal is performed demodulation, obtain demodulated signal.After obtaining demodulated signal, determine that the communication between photovoltaic apparatus and control equipment is the most normal by the difference of second sensor detection dc bus output voltage before demodulation and after demodulation, it is achieved thereby that the communication between photovoltaic apparatus and control equipment, complete the state parameter of photovoltaic panel of photovoltaic apparatus to the transmission controlling equipment, improve the monitoring property of photovoltaic panel, and reduce photovoltaic apparatus and control the communication bus wiring cost of equipment, improve the photovoltaic apparatus in photovoltaic electric system and the communication quality between control equipment.
Preferably, this photovoltaic electric system is PV air-conditioner system, this PV air-conditioner system includes the working state detection device of photovoltaic panel of the present utility model, the photovoltaic apparatus in PV air-conditioner system system and the DC carrier wave communication controlling equipment can be realized based on medium voltage DC line of force carrier wave, improve the communication quality between photovoltaic apparatus and control equipment, thus reduce the cost of framework communication bus, it is to avoid the complexity of communication bus wire structures.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification, equivalent substitution and improvement etc. made, within should be included in protection domain of the present utility model.
Claims (9)
1. the working state detection device of a photovoltaic panel, it is characterised in that including:
Photovoltaic apparatus, is arranged in photovoltaic electric system, is connected with one end of dc bus, including photovoltaic panel and manipulator, for being loaded onto dc bus by being modulated, by the state parameter of described photovoltaic panel, the modulated signal obtained；
Control equipment, is connected with the other end of described dc bus, including demodulator, for described modulated signal being demodulated obtaining the state parameter of described photovoltaic panel by described demodulator；
First sensor, for detecting the duty of described photovoltaic panel；And
First controller, is connected with described first sensor, for described photovoltaic panel being performed control according to the state parameter of described photovoltaic panel,
Wherein, the input of described manipulator is connected with described first controller, and the outfan of described manipulator is connected with described dc bus.
Device the most according to claim 1, it is characterised in that described first sensor includes following any one or more sensor:
Voltage sensor, for detecting the voltage status parameter of described photovoltaic panel；
Position sensor, for detecting the location status parameter of described photovoltaic panel；And
Temperature sensor, for detecting the state of temperature parameter of described photovoltaic panel.
Device the most according to claim 1, it is characterised in that described control equipment also includes:
Second sensor, for detecting the output signal of described dc bus；
Second controller, is connected with the outfan of described second sensor and described demodulator, for judging whether the state parameter of described photovoltaic panel is successfully transmitted to described control equipment according to the output signal of described dc bus；And
Host computer, is connected with described second controller, for the duty of described photovoltaic panel is performed monitoring.
Device the most according to claim 3, it is characterised in that described second sensor is voltage sensor, for detecting the output voltage of described dc bus.
Device the most according to claim 3, it is characterised in that described control equipment also includes that inverter, described inverter are connected with described photovoltaic panel and described second controller, for receiving the output signal of described second controller.
Device the most according to claim 1, described manipulator is modulation chip, and described demodulator is demodulation chip.
Device the most according to claim 1, it is characterised in that described dc bus is middle pressure dc bus.
8. a photovoltaic electric system, it is characterised in that include the working state detection device of photovoltaic panel according to any one of claim 1 to 7.
Photovoltaic electric system the most according to claim 8, it is characterised in that described photovoltaic electric system is PV air-conditioner system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105319431A (en) * | 2015-11-02 | 2016-02-10 | 珠海格力电器股份有限公司 | Photovoltaic plate work state detection method, device and system, and photovoltaic electric appliance system |
| CN109428628A (en) * | 2017-09-04 | 2019-03-05 | 丰郅(上海)新能源科技有限公司 | The method for transmitting photovoltaic module real time data and historical data |
| CN109470953A (en) * | 2018-11-07 | 2019-03-15 | 珠海格力电器股份有限公司 | A kind of electrical safety test method of PV air-conditioner |
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2015
- 2015-11-02 CN CN201520874193.3U patent/CN205620455U/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105319431A (en) * | 2015-11-02 | 2016-02-10 | 珠海格力电器股份有限公司 | Photovoltaic plate work state detection method, device and system, and photovoltaic electric appliance system |
| WO2017076191A1 (en) * | 2015-11-02 | 2017-05-11 | 珠海格力电器股份有限公司 | Method, apparatus, and system for detecting working state of photovoltaic panel, and photovoltaic electrical system |
| CN105319431B (en) * | 2015-11-02 | 2018-04-13 | 珠海格力电器股份有限公司 | Working state detecting method, device and system and the photovoltaic electric system of photovoltaic panel |
| CN109428628A (en) * | 2017-09-04 | 2019-03-05 | 丰郅(上海)新能源科技有限公司 | The method for transmitting photovoltaic module real time data and historical data |
| CN109428628B (en) * | 2017-09-04 | 2021-06-01 | 丰郅(上海)新能源科技有限公司 | Method for transmitting real-time data and historical data of photovoltaic module |
| CN109470953A (en) * | 2018-11-07 | 2019-03-15 | 珠海格力电器股份有限公司 | A kind of electrical safety test method of PV air-conditioner |
| CN109470953B (en) * | 2018-11-07 | 2020-01-17 | 珠海格力电器股份有限公司 | Electrical safety testing method of photovoltaic air conditioner |
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