TWI630790B - Solar power generation system and solar module power generation abnormality detection method - Google Patents

Abstract

A solar power generation system and a solar module power generation abnormality detecting method, the detecting method comprising the following steps: (A) inputting an audio signal into a power circuit of a series of solar modules via an inverter electrically connected to a series of solar modules; (B) displacing along the power circuit by a coupled receiver capable of inductively receiving an audio signal transmitted in the power loop; and (C) causing the coupled receiver to output a prompt message that can be perceived by the human body according to the sensing result of the audio signal. The solar module power generation abnormality detecting method is designed, and according to the content of the prompt message output by the coupled receiver, it is immediately determined whether the coupled receiver passes the disconnection fault point of the power circuit, and the solar module serial can be quickly detected. The location of the disconnection fault point.

Description

Solar power generation system and solar module power generation abnormality detection method

The present invention relates to a power generation system, and more particularly to a solar power generation system.

Solar energy is a kind of environmentally friendly green energy, so many countries have invested a lot of resources to actively develop and build large-scale solar power plants, with a view to reducing the demand for nuclear energy and fossil fuels. In the current construction of a solar power plant, a plurality of solar modules are usually connected in series to form a series of solar modules, and then a plurality of solar modules are electrically connected in series to an inverter system, and the solar modules can be The DC power generated by the series is converted into an AC output, which can be used to drive the load, or input to the utility system for resale to the unit for sale.

Since a solar farm usually has a large number of solar modules, and each solar module series is composed of a plurality of solar modules connected in series, whenever the power output of the inverter system is found to plummet, for example, A certain solar module in a solar module is faulty, so that the solar module has no power output or a sudden drop in output power. At this point, the maintenance personnel must first check for a problem in which series of solar modules, and then use the meter to measure each solar module in the series of faulty solar modules to output power normally. The faulty point of the failed solar module or power circuit is very time consuming and inconvenient.

Accordingly, it is an object of the present invention to provide a solar power generation system and fault detection method that can improve at least one of the disadvantages of the prior art.

Thus, the solar power generation system of the present invention comprises a solar module series, an inverter electrically connected to the solar module series, and a coupled receiver. The solar module series has a plurality of solar modules serially connected in series to form a power circuit, the inverter includes an inverter circuit unit for converting the power outputted by the power circuit into an alternating current output, and an energy An audio signal is output to the audio signal generating unit of the power circuit. The coupled receiver can be held by a user and displaced along the serial direction of the solar modules of the solar module, including a signal receiving unit capable of sensing and receiving the audio signal transmitted by the power circuit. And a prompting unit capable of outputting a prompt message that can be perceived by the human body according to the sensing result of the signal receiving unit for the audio signal.

Therefore, the solar module power generation abnormality detecting method of the present invention is suitable for detecting a disconnection fault position of a solar module series, and the solar module series has a power loop for transmitting power. The solar module power generation abnormality detecting method comprises the following steps: (A) inputting an audio signal into the power circuit via an inverter electrically connected to the solar module series; (B) receiving and receiving the power in the power circuit; The coupled receiver of the audio signal transmitted by the loop is displaced along the power loop and causes the coupled receiver to sense whether the audio loop section of the power loop segment in which it is currently present; and (C) causing the coupled receiver to follow the audio The sensing result of the signal corresponds to outputting a prompt message that can be perceived by the human body.

The effect of the present invention is that the audio signal can be transmitted to the power circuit of the solar module series, and the coupled receiver can sense the audio signal of the power circuit and correspondingly output the prompt message design according to the coupling receiver. The content of the prompt message is outputted, and it is immediately determined whether the coupled receiver has just passed the disconnection fault point of the power circuit, so that the faulty maintenance time of the solar power generation system can be greatly shortened.

Referring to Figures 1, 2, and 3, an embodiment of the solar power generation system of the present invention includes a plurality of solar module series 2, one electrically connected to the solar module series 2, and the solar modules are connected in series 2 The inverter 3 is provided, and a coupling receiver 4 is provided for one user to move. Each of the solar module series 2 has a plurality of solar modules 21 connected in series to form a power module 20 electrically coupled to the power circuit 20 of the inverter 3. Since the solar module series 2 is a conventional component and is not a modification of the present invention, it will not be described in detail.

The inverter 3 includes an inverter circuit unit 31, a power detecting unit 32, an audio signal generating unit 34, and an alarm unit 33. The inverter circuit unit 31 can integrate the direct current output of the solar module series 2 and convert the direct current into an alternating current output. Since the inverter circuit unit 31 converts the direct current into the alternating current output, the technology is numerous, and therefore will not be described in detail. .

The power detecting unit 32 is operable to set a power threshold, and detects whether the output power of the inverter circuit unit 31 is less than the power threshold, and drives the alarm unit when determining that the output power is less than the power threshold. 33 sends an alarm message to remind the remote monitoring personnel or maintenance personnel, and triggers the audio signal generating unit 34 synchronously. The alert message may be an email, a short message, a phone voice, a social software/website message or an alert record, and is not limited to the above types.

The audio signal generating unit 34 can be triggered to generate an audio signal 340, and the audio signal 340 is coupled to the power circuits 20 of the solar module series 2, so that the audio signal 340 is along the power circuits. 20 spread.

The coupled receiver 4 includes a signal receiving unit 41 that can be used adjacent to each power circuit 20, and a prompting unit 42 that is electrically coupled to the signal receiving unit 41. The signal receiving unit 41 can inductively receive and transmit in the power circuit 20 when coupled to the power circuit 20 of the solar module string 2, that is, when the power transmission line between the solar modules 21 is adjacent to the power transmission line. The audio signal 340.

The prompting unit 42 includes a signal amplifying module 421 and a signal converting module 422. The signal amplification module 421 performs signal amplification processing on the audio signal 340 received by the signal receiving unit 41. The signal conversion module 422 converts the audio signal 340 processed by the signal amplification module 421 into a human body for sensing. Prompt message. The prompt message may be in the form of sound, light, image, temperature, and/or vibration.

The solar module power generation abnormality detecting method of the invention comprises the following steps:

Step (1): An inverter 3 capable of outputting the audio signal 340 is electrically connected to the solar module series 2, so that the solar module series 2 is connected in parallel to the inverter 3. The inverter 3 is continuously converges the direct current outputted by the solar module serial 2, and converts the direct current into an alternating current output, and simultaneously detects whether the output power of the analysis itself is lower than the power threshold.

Step (2): causing the inverter 3 to issue the alarm message when determining that the output power is lower than the power threshold, and start coupling the audio signal 340 to the power of each solar module serial 2 Loop 20.

Step (3) displacing a coupling receiver 4 capable of sensing the audio signal 340 transmitted by each power circuit 20 along the serial direction of the solar modules 21 of each solar module string 2 The coupling receiver 4 senses whether the audio signal 340 is present in the section of the power circuit 20 through which it passes.

Step (4), the coupling receiver 4 correspondingly outputs the prompt message according to the sensing result of the audio signal 340. In this embodiment, when the coupled receiver 4 senses the audio signal, the prompt message is sent, and when the audio signal is not sensed, the prompt message is stopped.

Through the structural design of the inverter 3 and the coupled receiver 4, and the solar module power generation abnormality detecting method design, the user only needs to use the coupled receiver 4 along the serial direction of a solar module string 2 Displacement and proximity to the corresponding power circuit 20 can detect whether the power circuit 20 has an open circuit fault. If the power circuit 20 is not faulty, the coupling receiver 4 senses the audio signal 340 and continuously sends the prompt message during the displacement along the power circuit 20. When the power circuit 20 has an open circuit fault, since the audio signal 340 transmitted by the power circuit 20 can only be transmitted to the open circuit fault point 201 of the power circuit 20, the coupled receiver 4 moves through the power circuit 20 After the disconnection fault point 201, the prompt message is stopped because the audio signal 340 is not sensed, and the user can immediately know which solar module 21 the disconnection fault point 201 of the power circuit 20 is in. Or, which two solar modules 21 are located, it is quite convenient, and it is no longer necessary to measure each solar module 21 of each solar module string 2 one by one by an electric meter or related instruments.

In this embodiment, the prompting unit 42 is designed to convert the audio signal sensed by the signal receiving unit 41 into the prompt message that can be perceived by the human body, so that when the signal receiving unit 41 does not sense the audio signal, The prompting unit 42 stops outputting the prompt message. However, in other implementations of the present invention, the prompting unit 42 may be designed to generate different prompts when the audio signal is sensed and the audio signal is not sensed. The message, that is, outputting different prompt messages according to the sensing result of the audio signal, for example, outputting different sounds, different color lights or different images, etc., also allows the user to conveniently distinguish whether the coupled receiver 4 passes through a power circuit 20. The open circuit fault point 201.

In addition, in the embodiment, the solar power generation system is described by taking a coupled receiver 4 as an example, but in implementation, in other embodiments of the present invention, the solar power generation system can also have multiple coupled receptions. The device 4 can facilitate the detection of the disconnection fault point 201 of the solar module series 2 by a plurality of users.

In summary, the inverter 3 can send an alarm message when it detects that the output power is lower than a predetermined power threshold, and starts transmitting the audio signal 340 to each solar module serial 2 The design of the power circuit 20, and the coupling receiver 4 can sense the audio signal 340 and generate the prompt message when the power circuit 20 is moved near each of the solar module series 2, when the coupling receiver 4 is When the prompt message is not sent or the prompt message is changed, it means that the coupling receiver 4 has just passed the disconnection fault point 201 of the solar module serial 2, which can facilitate the user to quickly detect the disconnection of the solar module serial 2 The position of the fault point 201 can greatly shorten the detection time of the disconnection fault point 201 of the solar module series 2, which is quite convenient and practical. Therefore, the object of the present invention can be achieved.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the simple equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still Within the scope of the invention patent.

2‧‧‧Solar module series
20‧‧‧Power circuit
201‧‧‧ Breaking point of failure
21‧‧‧Solar modules
3‧‧‧Inverter
31‧‧‧Inverter circuit unit
32‧‧‧Power detection unit
33‧‧‧Alarm unit
34‧‧‧Audio signal generation unit
340‧‧‧Audio signal
4‧‧‧ Coupled Receiver
41‧‧‧Signal receiving unit
42‧‧‧Cue unit
421‧‧‧Signal amplification module
422‧‧‧Signal Conversion Module

Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: FIG. 1 is a schematic structural diagram of an embodiment of a solar power generation system of the present invention; FIG. 2 is a functional block of the embodiment. Figure 3 is a view similar to Figure 1, illustrating a coupling receiver that stops outputting a prompt message when a coupled receiver is displaced through an open circuit fault point of a power circuit.

Claims (10)

A solar power generation system comprising: a solar module series having a plurality of solar modules serially connected in series to form a power circuit; an inverter electrically connected to the solar module series, including one for The power circuit output power is converted into an AC power output inverter circuit unit, and an audio signal generating unit capable of outputting an audio signal to the power circuit; and a coupled receiver capable of being held by a user The tandem displacement of the solar modules in series with the solar module includes a signal receiving unit capable of sensing the audio signal transmitted by the power circuit, and a sensing result of the receiving unit according to the signal Corresponding to output a prompt message that can be perceived by the human body. The solar power generation system of claim 1, wherein the prompting unit comprises a signal amplification module capable of performing signal amplification processing on the audio signal received by the signal receiving unit, and a signal amplification module capable of processing the signal amplification module The audio signal is converted into a signal conversion module that can be perceived by the human body. The solar power generation system of claim 1 or 2, wherein the inverter further comprises a power detecting unit, wherein the power detecting unit has a power threshold built therein, and the power outputted by the inverter circuit unit is lower than The power threshold drives the audio signal generating unit to output the audio signal to the power circuit. The solar power generation system of claim 3, wherein the inverter further comprises an alarm unit, the power detection unit drives the alarm unit to emit when the power output by the inverter circuit unit is lower than the power threshold An alert message. The solar power generation system of claim 1, wherein the signal receiving unit senses the audio signal transmitted by the power circuit in a coupled sensing manner. The solar power generation system of claim 1, wherein the prompt message is in the form of sound, light, image, temperature, and/or vibration. A solar module power generation abnormality detecting method is suitable for detecting a disconnection fault position of a solar module series, the solar module serial has a power loop for transmitting power, and the solar module power generation abnormality detecting method comprises the following steps (A) inputting an audio signal into the power loop via an inverter electrically coupled to the series of solar modules; (B) a coupled receiver along the edge of the audio signal capable of sensing the transmission of the audio signal in the power loop Disconnecting the power circuit and causing the coupled receiver to sense whether the audio circuit segment is currently present in the power circuit segment; and (C) causing the coupled receiver to output a corresponding one according to the sensing result of the audio signal Perceived alert message. The solar module power generation abnormality detecting method according to claim 7, wherein the step (C) is: when the coupled receiver senses the audio signal, converting the audio signal into the prompt message that can be perceived by the human body. . The solar module power generation abnormality detecting method according to claim 7 or 8, wherein the prompt message may be in the form of sound, light, image, temperature, and/or vibration. The solar module power generation abnormality detecting method according to claim 7, further comprising a step (D) before the step (A): causing the inverter to analyze whether the output power is lower than an electric power valve. The value (A) is that the inverter inputs the audio signal to the power circuit when determining that the output power is lower than the power threshold.