TWI706617B - Solar Smart Disaster Prevention Circuit Breaker - Google Patents

Abstract

A solar intelligent disaster prevention circuit breaker for electrically connecting a solar panel module. The solar energy intelligent disaster prevention circuit breaker includes an input unit, an output unit, a switch unit, an electric energy detection unit and a control unit. The input unit includes electricity A first input terminal and a second input terminal of the solar panel module are connected. The output unit includes a first output terminal and a second output terminal electrically connected to the second input terminal. The switch unit is connected in series with the Between the first input terminal and the first output terminal, and can be controlled to switch between an on state and an off state, the control unit is electrically connected to the power detection unit, and the power detection unit detects the The voltage level of the converted electrical signal is judged for a predetermined time, and the switch unit can be converted to the open circuit state when the voltage level of the converted electrical signal produces an abnormal drop condition, ensuring the safety of the entire system.

Description

Solar Smart Disaster Prevention Circuit Breaker

The invention relates to a disaster prevention device, in particular to a solar intelligent disaster prevention circuit breaker.

Referring to Figure 1, an existing power distribution system includes a plurality of solar panel modules 11 respectively outputting a plurality of converted electrical signals, a DC protection module 12 electrically connected to the solar panel modules 11, and a DC protection module electrically connected to the DC protection module 12 A power conversion module 13 that converts DC power into AC power, an AC power distribution module 14 electrically connected to the power conversion module 13, a plurality of lines between the solar panel modules 11 and the DC protection module 12 The first trunking member 15, a second trunking member 16 that covers the line between the DC protection module 12 and the power conversion module 13, and a second trunking member 16 that covers the power conversion module 13 and the AC power distribution The third wire slot member 17 between the modules 14.

After the solar panel modules 11 respectively convert solar energy into the converted electrical signals, the converted electrical signals of the direct current type are transmitted to the direct current protection module 12, and then transmitted to the power conversion module 13 for conversion into The converted electrical signals of the alternating current type are finally transmitted to the alternating current power distribution module 14 for subsequent use. The direct current protection module 12 can be disconnected when overloaded to ensure the direct current protection mode Safety of circuits downstream of group 12.

However, if the power is abnormal, if the system cannot be shut down in time, it may cause further damage to the system. Therefore, it is necessary to design for disaster prevention.

Therefore, the purpose of the present invention is to provide a solar smart disaster prevention circuit breaker that overcomes the disadvantages of the prior art.

Therefore, the solar smart disaster prevention circuit breaker of the present invention is used to electrically connect a solar panel module, the solar panel module is used to convert solar energy into a converted electrical signal, and the solar smart disaster prevention circuit breaker includes an input unit, an output unit, A switch unit, a signal generation unit, an electric energy detection unit, and a control unit.

The input unit includes a first input terminal and a second input terminal electrically connected to the solar panel module to receive the converted electrical signal. The output unit includes a first output terminal, and a second input terminal electrically connected to the solar panel module. The second output terminal that outputs the converted electrical signal together with the first output terminal, the switch unit is connected in series between the first input terminal and the first output terminal, and can be controlled to be in an on state and an off state In the conducting state, the first input terminal and the first output terminal are connected to each other, and in the open state, the first input terminal and the first output terminal are not conducting, and the signal generating unit is electrically connected The switch unit can be controlled to output a driving voltage, the electric energy detection unit is electrically connected to the first output terminal and the second output terminal to detect the voltage of the converted electrical signal, and the control unit is electrically connected to the signal generating unit and The power detection unit and the control unit judge the voltage of the converted electrical signal detected by the power detection unit for a predetermined time. When the voltage within the predetermined time drops to a predetermined voltage, the control unit is After the delay time, the signal generating unit is driven not to input the driving voltage to the switch unit to make the switch unit change to the open circuit state.

The effect of the present invention is that by providing the switch unit, the signal generating unit, the electric energy detecting unit and the control unit, the transmission of the converted electrical signal can be stopped when the voltage of the converted electrical signal is abnormally decreased. To ensure the safety of the entire system.

Referring to FIG. 2, an embodiment of the solar intelligent disaster prevention circuit breaker of the present invention is used to electrically connect a solar panel module 91 for converting solar energy into a converted electrical signal. In this embodiment, the solar panel module 91 is formed by connecting a plurality of solar panels (not shown) in series, and the converted electrical signal is a direct current type and is a common series voltage of the solar panels.

The solar smart disaster prevention circuit breaker includes an input unit 21, an output unit 22, a switch unit 3, a temperature measurement unit 4, a signal generation unit 5, an electric energy detection unit 6, a control unit 7, and a transceiver unit 8.

The input unit 21 includes a first input terminal 211 and a second input terminal 212 electrically connected to the solar panel module 91 to receive the converted electrical signal.

The output unit 22 includes a first output terminal 221 and a second output terminal 222 electrically connected to the second input terminal 212 and outputting the converted electrical signal together with the first output terminal 221. In this embodiment, the first input terminal 211 and the first output terminal 221 are negative electrodes of direct current, and the second input terminal 212 and the second output terminal 222 are positive electrodes of direct current. However, in other embodiments The first input terminal 211 and the first output terminal 221 are direct current positive electrodes, and the second input terminal 212 and the second output terminal 222 are direct current negative and positive electrodes, which also have the same Effect.

The switch unit 3 is connected in series between the first input terminal 211 and the first output terminal 221, and can be controlled to switch between an on state and an off state. In the on state, the first input terminal 211 and the first output terminal 221 are connected to each other, and in the disconnected state, the first input terminal 211 and the first output terminal 221 are not connected. In this embodiment, the switch unit 3 is a relay type electromagnetic switch. In other implementations, it may also be a silicon controlled rectifier (SCR), an insulated gate bipolar transistor (Insulated Gate Bipolar Transistor). Gate Bipolar Transistor, IGBT) or other electronic parts that can be used as switching functions.

The temperature measuring unit 4 is used to measure the ambient temperature. In this embodiment, the temperature measurement unit 4 converts the measured ambient temperature into an analog voltage output format. However, in other implementations, it can also be converted into a digital signal format first. Output.

The signal generating unit 5 is electrically connected to the switch unit 3 and can be controlled to output a driving voltage. In this embodiment, the driving voltage is 15VDC.

The power detection unit 6 is electrically connected to the first output terminal 221, the second output terminal 222, and the control unit 7 to detect the voltage, current, and power of the converted electrical signal.

The control unit 7 is electrically connected to the temperature measurement unit 4, the signal generation unit 5, and the electric energy detection unit 6. The control unit 7 is used when the ambient temperature measured by the temperature measurement unit 4 is not higher than a preset temperature , Drive the signal generating unit 5 to input the driving voltage to the switch unit 3 to make the switch unit 3 switch to the on state, and the control unit 7 when the temperature measurement unit measures the ambient temperature higher than the preset temperature At this time, the signal generating unit 5 is driven not to input the driving voltage to the switch unit 3 to make the switch unit 3 switch to the open state. In this embodiment, the preset temperature is 80 degrees Celsius, but it is not limited to this.

The transceiving unit 8 is electrically connected to the control unit 7 and can receive or output a transceiving signal to a server 92. The content of the transceiving signal output is the voltage, current, and power of the converted electrical signal, and the switch unit 3 At least one of the on-states of the input and output signal content is a command that drives the control unit 7 to control whether the signal generation unit 5 outputs the driving voltage.

When in use, the solar panel module 91 converts the received solar energy into the converted electrical signal, and drives the control unit 7 when the ambient temperature measured by the temperature measurement unit 4 is not higher than 80 degrees Celsius. The signal generating unit 5 inputs the driving voltage of 15 VDC to the switch unit 3, so that the switch unit 3 is converted to the conductive state, and the converted electrical signal can be output from the input unit 21 and the switch unit 3 at this time. The unit 22 outputs to provide power to subsequent components for use or further storage for future use.

At the same time, the control unit 7 can transmit the voltage, current, power, and conduction status of the switch unit 3 of the converted electrical signal detected by the electric energy detection unit 6 to the transceiving signal through the transceiving signal output by the transceiving unit 8. The server 92 enables remote maintenance personnel to know the real-time status of the solar intelligent disaster prevention circuit breaker according to the transceiver signal received by the server 92. In this embodiment, the control unit 7 sends the transceiver signal periodically, for example, once every ten seconds, and the transceiver unit 8 can transmit the transceiver signal in the form of wired transmission or wireless transmission.

When a fire occurs, when the ambient temperature measured by the temperature measuring unit 4 is higher than 80 degrees Celsius, the control unit 7 drives the signal generation unit 5 to no longer input the driving voltage to the switch unit 3 to make the switch The unit 3 changes to the open circuit state. At this time, the converted electrical signal with larger electrical energy cannot pass through the switch unit 3. Since the positive and negative poles of the direct current no longer form a loop, the converted electrical signal is no longer generated, so the downstream The line no longer has large electric power to pass through, which can avoid the expansion of disasters caused by the continuous supply of large power when a fire occurs, and can also avoid the accident of electric shock by firefighting and disaster relief personnel.

In addition, when a fire occurs, the control unit 7 continues to transmit the transceiver signal to the server 92 through the transceiver unit 8, so the maintenance personnel at a distance can also know from the transceiver signal received by the server 92 The switch unit 3 has been converted to the open circuit state, and the occurrence of a fire can be judged by this, and corresponding measures can be taken.

It should be noted that when maintenance personnel know that a fire has occurred and need to stop the switch unit 3, or need to stop or open the switch unit 3 due to maintenance requirements, they only need to input to the transceiver unit 8 to drive the control unit 7 to control Whether the signal generating unit 5 outputs the command of the driving voltage can control the switch unit 3 to switch to the required state, which can ensure the safety of maintenance personnel.

It should be noted that the control unit 7 also judges the voltage level of the converted electrical signal detected by the electric energy detection unit 6 for a predetermined time, and when the voltage within the predetermined time drops to a predetermined voltage, the control The unit 7 drives the signal generating unit 5 not to input the driving voltage to the switch unit 3 after a delay time, so that the switch unit 3 changes to the open state. In this embodiment, the predetermined time is 3 seconds, the predetermined voltage is 0VDC, and the delay time is 1 second, but it is not limited to this, and can be adjusted as required. In addition, in another implementation aspect , The predetermined time is 1 second, or the voltage level can be judged every predetermined time. When the voltage level of three consecutive times is in a downward trend and the voltage level of the last time drops to the preset voltage, drive the The switch unit 3 changes to the open state. It should be noted that when the voltage drops to the preset voltage, it means that the circuits after the first output terminal 221 and the second output terminal 222 are short-circuited. Therefore, the switch unit 3 needs to be changed to the open state to perform Overhaul.

In this way, when the voltage of the converted electrical signal has an abnormal drop, it may be that the circuit is damaged or the solar panel module 91 is damaged, the switch unit 3 can be switched to the open state to ensure the entire The security of the system and maintenance by maintenance personnel.

To sum up, by providing the switch unit 3, the temperature measuring unit 4, the signal generating unit 5, the electric energy detection unit 6, and the control unit 7, it is possible to detect whether a fire occurs, and to enable it when a fire occurs. Stopping the transmission of the conversion signal to avoid the expansion of disasters, and to stop the transmission of the conversion signal when the voltage of the conversion signal is abnormally lowered, to ensure the safety of the entire system, so it can indeed achieve the purpose of the invention.

However, the above are only examples of the present invention. When the scope of implementation of the present invention cannot be limited by this, all simple equivalent changes and modifications made in accordance with the scope of the patent application of the present invention and the content of the patent specification still belong to This invention patent covers the scope.

21: Input unit 211: The first input terminal 212: second input terminal 22: output unit 221: The first output terminal 222: second output terminal 3: Switch unit 4: Temperature measurement unit 5: Signal generation unit 6: Power detection unit 7: Control unit 8: Transceiver unit 91: Solar Panel Module 92: server

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a schematic diagram of an existing power distribution system; and Fig. 2 is a schematic diagram of an embodiment of the solar smart disaster prevention circuit breaker of the present invention.

21: Input unit

211: The first input terminal

212: second input terminal

22: output unit

221: The first output terminal

222: second output terminal

3: Switch unit

4: Temperature measurement unit

5: Signal generation unit

6: Power detection unit

7: Control unit

8: Transceiver unit

91: Solar Panel Module

92: server

Claims (4)

A solar smart disaster prevention circuit breaker for electrically connecting a solar panel module for converting solar energy into a DC type conversion electrical signal. The solar smart disaster prevention circuit breaker includes: an input unit including an electrical connection The solar panel module receives a first input terminal and a second input terminal for the conversion signal; an output unit includes a first output terminal, and an electrical connection to the second input terminal and to the first output The terminals jointly output the second output terminal of the converted electrical signal. The switch unit is a silicon controlled rectifier or an insulated gate bipolar transistor; a switch unit is connected in series between the first input terminal and the first output terminal and can It is controlled to switch between a conducting state and an open state. In the conducting state, the first input terminal and the first output terminal are connected to each other, and in the open state, the first input terminal and the first The output terminal is not conductive; a signal generating unit is electrically connected to the switch unit and can be controlled to output a driving voltage; an electric energy detection unit is electrically connected to the first output terminal and the second output terminal to detect the conversion of the electrical signal Voltage level; a control unit electrically connected to the signal generating unit and the power detection unit, the control unit determines the voltage level of the converted electrical signal detected by the power detection unit at a predetermined time, when the predetermined time When the voltage drops to a predetermined voltage, the control unit drives the signal generating unit not to input the driving voltage to the switch unit after a delay time so that the The switch unit changes to the open state, and the control unit determines the voltage level every predetermined time. When the voltage level for several consecutive times shows a downward trend and the last time the voltage level drops to the preset voltage, the control unit drives the The switch unit is converted to the open circuit state; and a temperature measurement unit for measuring the ambient temperature, the control unit drives the temperature measurement unit when the ambient temperature measured by the temperature measurement unit is not higher than a preset temperature The signal generating unit inputs the driving voltage to the switch unit to transform the switch unit to the on state, and the control unit drives the signal generating unit when the ambient temperature measured by the temperature measuring unit is higher than the preset temperature The driving voltage is not input to the switch unit to make the switch unit switch to the open circuit state. The solar smart disaster prevention circuit breaker according to claim 1, wherein the electric energy detection unit also detects the current and power of the converted electrical signal. The solar smart disaster prevention circuit breaker according to claim 2, further comprising a transceiving unit electrically connected to the control unit and capable of receiving or outputting a transceiving signal, and the content of the transceiving signal output is the voltage and current of the converted electrical signal At least one of size, power size, and on-state of the switch unit. The solar intelligent disaster prevention circuit breaker according to claim 3, wherein the content of the input and received signal is an instruction to drive the control unit to control whether the signal generating unit outputs the driving voltage.

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