TWI625019B - Power distribution apparatus and method of controlling the same - Google Patents

Abstract

A power distribution device includes: a power terminal that receives input power. The power distribution module is electrically connected to the power terminal, and the input power is converted to an output power source. At least one power distribution module each includes a plurality of output ports, and is electrically connected to the power distribution module to receive the output power to the output port. The input detecting unit is electrically connected between the power distribution module and the power terminal, detects the input power and generates input information. The at least one output detecting unit electrically connects the output port, detects the output power source, and generates at least one output information correspondingly. The management unit controls the corresponding output according to the input information or the at least one output information to turn the output power on or off.

Description

Power distribution device and its operation method

The present invention relates to a power distribution device and an operation method thereof, and more particularly to a power distribution device with leakage current detection and an operation method thereof.

The Power Distribution Unit is a power supply with multiple power outlets that provides power to the server and storage system in the frame. With the advancement of computer technology and the rapid development of the Internet, the number of services or functions provided by the Internet is increasing. Therefore, the data center composed of multiple computers or servers is also rapidly increasing. . In order to provide more services or functions on the Internet, the data center must increase the number of computers or servers in the data center, and the power supply, distribution and management of the data center will follow. In order to solve the problems of power supply, distribution and management in the data center, the data center uses the power distribution device to allocate the power required by each computer or server.

The power distribution device is divided into two types: Dump and Intelligent. The power supply is simply distributed to the device as a simple power distribution device. In addition to maintaining the original power distribution function, the current intelligent power distribution device can also pass through the remote end. The network performs power monitoring and measurement, and uses remote control to manage whether each power distribution device is powered to the connected computer or server, so that the overall power efficiency of the data center is optimized.

However, the design of existing power distribution devices often ignores the safety protection mechanism when the power distribution device is installed and turned on, even after a period of use. The ground connection of the product is especially important during installation, as there may be leakage conditions in the equipment or the machine itself. Before the power distribution unit supplies power to the equipment, it must also confirm that the power supply or power distribution is correct to avoid damage to the equipment. In addition, after using for a period of time, the switch on the power distribution unit must be switched according to the power quality or load condition to protect the back-end equipment and the entire data center.

Therefore, how to design a power distribution device and its operation method, use leakage current detection to judge whether the connection of the grounding wire is perfect, and provide a complete protection mechanism through a complete detection process; and protection parameters equipped with customized adjustment Adjusting the use configuration of the back-end equipment with flexibility is a major issue that the creators of the case have to overcome and solve.

In order to solve the above problems, the present invention provides a power distribution apparatus to overcome the problems of the prior art. Therefore, the power distribution apparatus of the present invention includes: a power supply terminal that receives input power. The power distribution module is electrically connected to the power terminal, and the input power is converted to an output power source. At least one power distribution module each includes a plurality of output ports, and is electrically connected to the power distribution module to receive the output power to the output port. The input detecting unit is electrically connected between the power distribution module and the power terminal, detects the input power and generates input information. The at least one output detecting unit electrically connects the output port, detects the output power source, and generates at least one output information correspondingly. The management unit controls the corresponding output according to the input information or the at least one output information to turn on and output the output power, or controls the corresponding output to be turned off and does not output the output power.

In an embodiment, the management unit controls to turn on or off all output ports in the at least one power distribution module according to the input information, and controls to turn on or off the output port according to the at least one output information.

In an embodiment, the power distribution device further includes: a leakage detecting unit electrically connected to the power terminal and outputting leakage information to the management unit. When the management unit is larger than the first range according to the leakage information, the control output is turned off.

In one embodiment, at least one of the power distribution modules further includes a first custom unit, and the first custom unit is electrically connected to the output detection unit and generates a second range.

In an embodiment, the management unit determines whether the at least one output information is within the second range, and the management unit correspondingly closes the output port outside the second range.

In an embodiment, the power distribution device further includes a second custom unit, and the second custom unit is electrically connected to the management unit, and generates a third range.

In an embodiment, wherein the management unit determines whether the input information is within the third range, the management unit closes all output ports in the at least one power distribution module outside the third range.

In an embodiment, the management unit determines at least whether the phase difference information and the total harmonic distortion information of the input information are within a third range.

In an embodiment, the input detecting unit further includes: a detecting unit electrically connected between the power distribution module and the power terminal, and detecting the input power source as power information. The computing unit is electrically connected to the detecting unit, and converts the power information into input information.

In an embodiment, the power distribution device further includes a transmission unit, and the transmission unit is electrically connected to the management unit, and the information in the management unit is externally transmitted.

In order to solve the above problems, the present invention provides a method of operating a power distribution apparatus to overcome the problems of the prior art. Therefore, the power distribution device of the present invention distributes the input power to the plurality of outputs, the respective output and output power, and controls the output by the management unit to turn the output power on or off. The operation method includes: (a) when the power distribution device receives the input power, The management unit performs a first detection process to determine whether the output is turned on or off. (b) After the management unit executes the first detection process, if the output is closed, the management unit transmits the information in the management unit to the outside. (c) After the management unit performs the first detection process, if the output is When turned on, the management unit performs a second detection process to determine whether the control output is turned on and the output power is output, or the corresponding output is controlled to be turned off and the output power is not output. (d) After the management unit executes the second detection process, the management unit transmits the information in the management unit to the outside, and returns to the second detection process.

In an embodiment, the first detecting process includes: (a1) when the management unit determines that the leakage information is greater than the first range, the management unit controls the output to be turned off. (a2) When the management unit judges that the input power or the output power is abnormal, the management unit controls the output to be turned off.

In an embodiment, the step (d) further includes: (d01) when the management unit performs the second detection process, if the management unit determines that the leakage information is greater than the first range, the management unit turns off the output port and transmits the management unit to the external unit. Information within.

In an embodiment, the step (b) further comprises: (b1) the management unit continuously detecting that the output needs to remain in the closed state.

In an embodiment, wherein the second detection process comprises: (c1) the management unit detects the input information. (c2) The management unit detects at least one output information.

In an embodiment, the step (c1) further includes: (c11) the management unit determines whether the input information is in the third range, and the management unit closes all the output ports in the at least one power distribution module outside the third range.

In an embodiment, the step (c1) further includes: (c12) the management unit determines whether the input information is in the third range, and the management unit opens all the output ports in the at least one power distribution module in the third range.

In an embodiment, the step (c2) further includes: (c21) the management unit determines whether the at least one output information is in the second range, and the management unit corresponds to the output port that is closed outside the second range.

In an embodiment, the step (c2) further comprises: (c22) the management unit determining whether the at least one output information is in the second range, and the management unit corresponding to the output port in the second range.

In order to further understand the technology, the means and the effect of the present invention in order to achieve the intended purpose, refer to the following detailed description of the invention and the accompanying drawings. The detailed description is to be understood as illustrative and not restrictive.

100‧‧‧Power distribution unit

10‧‧‧Power terminal

20‧‧‧Power distribution module

30‧‧‧Power distribution module

31‧‧‧ Output埠

311‧‧‧Switch unit

312‧‧‧Display unit

33‧‧‧Output detection unit

34‧‧‧First custom unit

40‧‧‧Input detection unit

41‧‧‧Detection unit

42‧‧‧Computation unit

50‧‧‧Leakage detection unit

60‧‧‧Management unit

70‧‧‧Self Custom Unit

80‧‧‧Transmission unit

90‧‧‧Disconnection unit

Pin‧‧‧ input power

Po‧‧‧Output power supply

△V‧‧‧voltage difference

Vd‧‧‧ voltage error value

Ii‧‧‧Power Information

Iic‧‧‧Enter information

Ilc‧‧‧Leakage Information

Ioc‧‧‧ output information

Ric‧‧‧ third range

Roc‧‧‧ second range

Rt‧‧‧ first range

(S100)~(S600)‧‧‧ steps

1 is a block diagram of a circuit of a power distribution device according to the present invention; FIG. 2 is a block diagram of a power distribution module of the present invention; FIG. 3 is a flow chart of the power distribution device of the present invention; FIG. 5 is a flow chart of abnormal protection of the power distribution device of the present invention.

The technical content and detailed description of the present invention are as follows with reference to the drawings: Please refer to FIG. 1 for a block diagram of the power distribution device of the present invention. The power distribution device 100 is electrically connected to an external power line (not shown), and includes a power terminal 10, a power distribution module 20, at least one power distribution module 30, an input detecting unit 40, and a management unit 60. The power terminal 10 is electrically connected to the power distribution module 20, and the power distribution module 20 receives the input power Pin by the power terminal 10. The power distribution modules 30 each include a plurality of output ports 31. The power distribution module 30 is electrically connected to the power distribution module 20. The power distribution module 20 distributes the input power source Pin to the output power source Po, and outputs the output power by the output ports 31. Po. The input power pin includes an input voltage and an input current, and the output power Po includes an output voltage and an output current. Taking FIG. 1 as an example, the power distribution device 100 includes two power distribution modules 30, and each power distribution module 30 includes eight output ports 31. Therefore, the power distribution module 20 is electrically connected to the two power distribution modules 30, and the input power source Pin is the output power source Po, and is output. The output power Po is connected to a total of 16 output ports 31 in the two power distribution modules 30. It is worth mentioning that the input power source Pin can be a three-phase AC input or a single-phase AC input. Therefore, when the input power source Pin is a three-phase AC input, there are three sets of input detection units 40 to detect different phase input power sources Pin. In addition, the power distribution module 20 can convert the three-phase input power Pin into a single-phase output power Po, or the single-phase input power Pin into a single-phase output power Po. Moreover, the number of the power distribution module 30 and the output port 31 shown in FIG. 1 is only a schematic example, but is not limited thereto, and is merely an example for convenience of description. Therefore, the power distribution module 20 can be electrically connected to one power distribution module 30, and the power distribution module 30 includes 10 output ports 31; or the power distribution module 20 can be electrically connected to the three power distribution modules 30, and each A power distribution module 30 includes one output port 31.

Referring to FIG. 1 , the power distribution apparatus 100 further includes an input detecting unit 40 and a leakage detecting unit 50. The input detecting unit 40 is electrically connected between the power distribution module 20 and the power terminal 10, and detects the input power source Pin and generates the input information Iic. The leakage detecting unit 50 is electrically connected between the power terminal 10 and the grounding point of the power distribution device 100, and outputs the leakage information Ilc to the management unit 60. The management unit 60 receives and determines at least one output information Ioc, leakage information Ilc, and input information Iic output by the input detecting unit 40 respectively output by the power distribution module 30 to control the output 埠31 to output or not output the output power Po. At least one output information Ioc is the output information Ioc outputted by each power distribution module 30. Therefore, taking FIG. 1 as an example, the power distribution apparatus 100 includes two power distribution modules 30, and accordingly outputs two output information Ioc. In other words, the number of at least one output information Ioc is determined by the number of power distribution modules 30. It is worth mentioning that the input detecting unit 40 is intended to detect the input power Pin input by the power terminal 10 and generate the input information Iic. Therefore, the input detecting unit 40 is not limited to be disposed between the power distribution module 20 and the power terminal 10. For example, the input detecting unit 40 can be disposed in the power terminal 10 or the power distribution module 20 according to design requirements. Similarly, the leakage detecting unit 50 can also be disposed between the power terminal 10 and the power distribution module 20 or integrated in the input detecting unit 40 according to design requirements. It is worth mentioning that in Figure 1, the input power pin and the output power Po are power supply signals, so the direction is indicated by solid arrows. The input information Iic, the leakage information Ilc, and the at least one output information Ioc are detection/report signals, so the direction is indicated by a dotted arrow.

As shown in FIG. 1 , the input detecting unit 40 further includes a detecting unit 41 and a calculating unit 42. The detecting unit 41 is electrically connected between the power distribution module 20 and the power terminal 10, and detects the input power Pin on the path from the power terminal 10 to the power distribution module 20, and outputs the power information Ii. The computing unit 42 is electrically connected to the detecting unit 41, and the converted power information Ii is the input information Iic. The detecting unit 41 detects the voltage (phase voltage) information, the current (phase current) information, the apparent power information, the effective power information, the virtual power information, the frequency information, and the phase information of the input power source Pin of the power terminal 10 as the power information Ii, The power information Ii is output to the calculation unit 42. The calculating unit 42 calculates the phase difference information, the power factor (PF) information, and the total harmonic distortion (THD) information of the input power source Pin by using the power information, and then outputs the input information Iic to the management unit. Therefore, the input information Iic includes the voltage (phase voltage) information, current (phase current) information, apparent power information, effective power information, virtual power information, frequency information, phase information, phase difference information, and power factor of the input power source Pin ( PF) information and total harmonic distortion (THD) information. The leakage detecting unit 50 detects the magnitude of the grounding impedance on the power supply terminal 10 and the magnitude of the leakage current as the leakage information Ilc, and outputs the leakage information Ilc to the management unit 60.

Referring to FIG. 1 , the power distribution device 100 further includes a second custom unit 70. The second custom unit 70 is electrically connected to the management unit 60. The second custom unit 70 can store the third range Ric of each power distribution module 30. And outputting the third range Ric to the management unit 60. The management unit 60 determines whether each of the power distribution modules outputs the output power Po by comparing the third range Ric with the input information Iic. The second custom unit 70 can be customized to set the third range Ric according to the requirements, and the third range Ric must meet the original factory setting range when the power distribution device 100 is shipped. If the user does not set the third range Ric in the second custom unit 70, the third range Ric is the original setting range. If the user has set the third range Ric, the third range Ric is mainly set by the user, but still needs to meet the original factory setting range. It is worth mentioning that the calculation unit 42 is not limited to only detecting and calculating the input information Iic, and the management unit 60 is not limited to only determine whether the input information Iic meets the third range Ric. For example, but not limited to, the calculation unit 42 can detect the fluctuation range of the voltage or current of the input power source Pin for a predetermined period of time to the management unit 60. E.g, The third range Ric can customize the voltage of the input power source Pin of the power supply terminal 10 to be less than 30V or the current fluctuation range needs to be less than 5A for a predetermined period of time, and is determined by the management unit 60.

As shown in FIG. 1, the power distribution apparatus 100 further includes a transmission unit 80. The transmission unit 80 is electrically connected to the management unit 60, and the management unit 60 transmits the information in the management unit to the external interface (not shown) through the transmission unit 80. The interface can be remotely controlled by the transmission unit 80 to the management unit 60. The transmission unit 80 can communicate with the external interface in a wired or wireless manner through serial communication or the Internet. The external interface can be a human interface, a computer or a handheld device. Moreover, the transmission mode can be one-way data transmission, and the user can only know the condition of the power distribution device 100, but cannot control the power distribution device 100. Or for interactive data transmission, the user can know the condition of the power distribution device 100 and control the power distribution device 100 at a remote end.

As shown in FIG. 1 , the power distribution device 100 further includes at least one breaking unit 90 . Each of the breaking units 90 is electrically connected between the power distribution module 20 and each power distribution module 30 , and the power distribution device 100 is controlled by the shutdown circuit unit 90 . The output 埠31 stops outputting the output power Po. Taking FIG. 1 as an example, the power distribution device 100 includes two power distribution modules 30, and each of the power distribution module 20 and the two power distribution modules 30 has one disconnecting unit 90. And the open or closed state of the breaking unit 90 can be transmitted to the external interface through the transmission unit 80. The breaking unit 90 can be a one-time breaking device such as a fuse or a manual switch. Alternatively, the control unit 60 or the external interface controls the opening or closing of the breaking unit 90, such as a relay or a transistor switch.

Please refer to FIG. 2 , which is a schematic block diagram of a power distribution module according to the present invention. Each power distribution module 30 further includes an output detecting unit 33, and the output detecting unit 33 is electrically connected between the management unit 60 and the output port 31. The output detecting unit 33 detects the output power Po on each of the output ports 31, and correspondingly converts the output power Po on each of the output ports 31 to the output information Ioc, and outputs the output information Ioc to the management unit 60. The output detecting unit 33 is electrically connected to each output port 31, and detects voltage information, current information, apparent power information, effective power information, and frequency information of the output power Po on each output port 31, and according to the detected Information calculates the power factor (PF) information of the output power Po of each output port 31 And after the total harmonic distortion (THD) information, the detected and outputted output information Ioc is output to the management unit 60. Therefore, at least one output information Ioc includes voltage information, current information, apparent power information, effective power information, frequency information, power factor (PF) information, and total harmonic distortion (THD) of the output power Po of each output port 31. News. Taking FIG. 2 as an example, the power distribution module 30 includes eight output ports 31. Therefore, the output detecting unit 33 correspondingly detects the output power Po on the eight output ports 31, and correspondingly converts the information of the output power Po on the eight output ports 31. It is 1 output information Ioc; therefore, the output information Ioc contains information of the output power Po on the 8 output ports 31. It is to be noted that, in this embodiment, the management unit 60 and the output detection unit 33 transmit the at least one output information Ioc in the form of a bus of the area network controller (CAN), and the optical coupling unit ISO is used as a danger. The signal is isolated (for example, the signal is abnormal, the voltage exceeds the critical value), but not limited to this. In other words, the at least one output information Ioc can be transmitted by means of a wired entity connection or wireless transmission, and in the embodiment, it can also be isolated as a dangerous signal by means of a transformer or a switch.

As shown in Figure 2, the complex fit is shown in Figure 1. Each power distribution module 30 further includes a first custom unit 34. The first custom unit 34 is electrically connected to the output detection unit 33. The first custom unit 34 can store the output power Po of each output port 31. The second range Roc, the second range Roc is outputted to the management unit 60 by the output detecting unit 33. The management unit source 60 determines whether the output port 31 outputs the output power source Po by comparing the second range Roc with the at least one output information Ioc. The first custom unit 34 can be customized to set the second range Roc according to the requirements, and the second range Roc must meet the original factory setting range when the power distribution device 100 is shipped. If the user does not set the second range Roc in the first custom unit 34, the second range Roc is the factory setting range. If the user has set the second range Roc, the second range Roc is mainly set by the user, but still needs to meet the original factory setting range. It should be noted that the output detecting unit 33 is not limited to only detecting and calculating the output information Ioc, and the management unit 60 is not limited to only determine whether the output information Ioc meets the second range Ric. For example, but not limited to, the output detecting unit 33 can detect the fluctuation range of the voltage or current of the output power source Po within a predetermined period of time to the management unit 60. For example, second The range Roc can customize the output power of the output port 31. The voltage of the output power Po needs to be less than 30V or the current fluctuation range is less than 5A for a predetermined period of time, and is determined by the management unit 60. Further, in the present embodiment, the output detecting unit 33 is intended to detect and convert the output power Po on each of the output ports 31 to the output information Ioc, and to provide the second range Roc by the first custom unit 34. Therefore, in the embodiment, the output detecting unit 33 and the first custom unit 34 can operate independently of the power distribution module 30. The output detecting unit 33 is connected between the first custom unit 34, the management unit 60 and the power distribution module 30, and converts the output power Po on each output port 31 to the output information Ioc, and is provided by the first custom unit 34. The second range Roc.

As shown in FIG. 2, each of the output ports 31 includes a switch unit 311, and the management unit stops the output of the output power source Po by controlling the switch unit 311 to be turned off. As shown in FIG. 2 , the power distribution module 30 includes eight output ports 31 , and each of the output ports 31 includes one switch unit 311 , but is not limited thereto. In other words, the number of switching units 311 is determined by the output 埠31. After the management unit 60 determines, or sets the information through the external interface, the information that the switch unit 311 is turned on or off is transmitted to the output detecting unit 33, and the output detecting unit 33 correspondingly turns on or off the switch unit 311 by using the received information. The output 埠31 turns the output power Po on or off.

As shown in Figure 2, the complex fit is shown in Figure 1. Each of the output ports 31 includes a display unit 312 that displays each output port 31 as an output output power source Po or an output power source Po. When the output detecting unit 33 turns on or off the information by receiving the output port 31 transmitted by the management unit 60, and correspondingly turns the switch unit 311 on or off, the display unit 312 displays that the switch unit 311 is in an on or off state. Taking FIG. 2 as an example, if the first to fourth display units 312 of the output port 31 are turned on from top to bottom, the output 埠 31 of the 1 to 4 output can be directly visually observed to have an output power supply Po. It is worth mentioning that in the present invention, a light-emitting diode (LED) lamp is used as the display unit 312, but is not limited thereto. Therefore, as long as the display unit 312 that outputs the output power Po can be visually observed by the visual observation, it should be included in the present embodiment.

As shown in FIGS. 1 and 2, the management unit 60 receives the leakage information Ilc, and the leakage information Ilc includes the magnitude of the ground impedance and the magnitude of the leakage current. The management unit 60 determines whether the grounding of the power supply terminal 10 and the ground of the external power supply line are properly connected by determining whether the leakage information Ilc is greater than the first range Rt. In general, the lower the ground impedance and the leakage current, the better the grounding condition of the representative device and the external power supply line. However, since the measurement of the signal is susceptible to slight errors, in order to prevent the power distribution device 100 from being too sensitive and malfunctioning, the first range Rt is preferably such that the ground impedance is less than 10 Ω, or the leakage current is less than 3 mA. Therefore, in the present embodiment, if the grounding impedance of the leakage information Ilc is greater than 10 Ω or the leakage current is greater than 3 mA, the grounding of the power supply terminal 10 and the ground of the external power supply line are not well connected. At this time, the management unit 60 turns off the switch unit 311 by the control output detecting unit 33 to control the output 埠 31 to stop outputting the output power Po. It is worth mentioning that the leakage detecting unit 50 does not limit the above-mentioned leakage information Ilc which can only detect and output the input power source Pin to the management unit 60 for making a judgment. Therefore, as long as it can be judged whether the grounding of the power supply terminal 10 and the grounding of the external power supply line are well connected, the leakage information Ilc is included in the scope of the present embodiment. For example, but not limited to, the leakage detecting unit 50 can detect and output the insulation resistance information of the input power source Pin to the management unit 60. The management unit 60 determines whether to control the output port 31 to turn off the output power source Po by the insulation resistance information of the input power source Pin.

Referring to FIG. 1 to FIG. 2, the management unit 60 receives at least one output information Ioc and the input information Iic, and determines whether to control whether the output port 31 is stopped by comparing the voltage difference between the voltage of the at least one output information Ioc and the input information Iic. Output output power Po. When the voltage difference ΔV between the input power source Pin of the power supply terminal 10 and the output power source Po of one of the output ports 31 is larger than the voltage error value Vd, the management unit 60 controls the output port 31 to stop outputting the power. In general, in a state where the power distribution apparatus 100 is in normal operation, the input power source Pin of the power source terminal 10 and the output power source Po of the output port 31 should be the same. However, due to internal circuit damage of the power distribution device 100, poor internal wiring, or poor external wiring, there is a voltage difference ΔV between the input power source Pin of the power supply terminal 10 and the output power Po of the output port 31. And because the measurement of the signal is easy to have a slight error, in order to avoid the power distribution device 100 being too sensitive and malfunctioning, When the power distribution apparatus 100 is idling, it is preferable that the voltage error value Vd between the input power source Pin of the power supply terminal 10 and the output power source Po of the output port 31 is 10V. Therefore, in the present embodiment, if the voltage difference ΔV is greater than 10 V, the power distribution device 100 is affected by internal circuit damage, poor internal wiring, or poor external wiring. At this time, the management unit 60 turns off the switch unit 311 by the control output detecting unit 33 to control the output 埠 31 to stop outputting the output power Po.

As shown in FIGS. 1 and 2, the management unit 60 receives the input information Iic and determines whether the input information Iic is within the third range Ric set by the second custom unit 70. The second custom unit 70 can customize the upper and lower limits of the phase voltage, the upper and lower limits of the phase current, the upper and lower limits of the frequency, the power factor threshold, and the total harmonic distortion threshold of each of the power distribution modules to be the third range Ric, and output the first The three range Ric is determined by the management unit 60. When the input information Iic exceeds the third range Ric of the at least one power distribution module 30, the management unit 60 correspondingly closes all the output ports 31 in the at least one power distribution module 30 beyond the third range Ric. Taking FIG. 1 as an example, it is assumed that at least one power distribution module 30 sets the power factor threshold of one of the power distribution modules 30 to 0.7 due to different load requirements, and the power factor threshold of the other power distribution module 30 is set to 0.8. When the input detecting unit 40 measures the power factor of the Pin input power source Pin to be 0.75, the management unit 60 controls the eight output ports 31 in the power distribution module 30 whose power factor threshold is set to 0.8 to be off. It should be noted that, in this embodiment, the manner in which the management unit 60 turns off all the output ports 31 in at least one power distribution module 30 is not limited. The management unit 60 can control the shutdown switch unit 311 through the control off-circuit breaking unit 90 or through the output detection unit 33, and can achieve the effect of turning off the output power source Po by the output port 31.

Referring to FIG. 1 to FIG. 2, the management unit 60 receives at least one output information Ioc outputted by the at least one power distribution module 30, and determines whether each of the at least one output information Ioc is the second set by the first custom unit 34. Within the range Roc. The first custom unit 34 can customize the respective current upper limit, power factor threshold, and total harmonic distortion threshold of the output power Po of each output port 31. When at least one of the output information Ioc exceeds the second range Roc, the management unit 60 correspondingly closes at least one output port 31 outside the second range Roc. Taking FIG. 1 as an example, it is assumed that the total harmonics of four of the output ports 31 in at least one of the power distribution modules 30 are lost. The true threshold is set to less than 10%, and the total harmonic distortion threshold of the other four output ports 31 is set to be less than 5%. When the output detecting unit 33 in the power distribution module 30 detects that the total harmonic distortion of the output power Po is 8%, the management unit 60 controls the four output ports 31 whose total harmonic distortion threshold is less than 5% to be off.

As shown in FIG. 1~2, the user can control the output port 31 to output the output power Po or the selective output output Po of the control output port 31 through the external interface or the management unit 60. Taking FIG. 1 as an example, the management unit 60 can control an odd output 埠 31 of one of the power distribution modules 30 to output an output power Po, and an even output 埠 31 of the other power distribution module 30 outputs an output power Po. And the display unit 312 next to the output port 31 of the output power source Po is turned on. It should be noted that the display unit 312 can display the state of the output port 31 as the output output power Po, the user actively turns off the output output power Po, or the management unit 60 detects that the output range power is out of the third range Ric and the second range Roc. status. For example, but not limited to, when the output port 31 outputs the output power source Po, the display unit 312 displays a green light. When the user actively turns off the output port 31 output output power Po, the display unit 312 displays a yellow light. When the management unit 60 detects that the output 埠 31 is stopped from outputting the output power Po beyond the third range Ric or the second range Roc, the display unit 312 displays a red light to achieve an effect of easily judging the state of the output 埠31.

It is worth mentioning that the management unit 60 is not limited to only determine whether the above information is within the third range Ric and the second range Roc. For example, but not limited to, the management unit 60 can record the voltage, current, frequency, power factor (PF), and total harmonic distortion (THD) of the input power source Pin during a day or a period of time, or which The voltage, current, frequency, power factor (PF), and total harmonic distortion (THD) are poor during the period; so that the user can configure the load connection output 埠31 that requires better power quality during the preferred period of the input power source Pin, or The input power source Pin actively turns off the output 埠31 that requires better power quality during the poor time period. For example, but not limited to, the management unit 60 can transmit information of the input power source Pin, information of the output power source Po, a state in which each output port 31 is turned on or off, and a third range Ric to the external interface.

Please refer to FIG. 3 for a detection flowchart of the power distribution device of the present invention. Refer to FIGS. 1 and 2 for the complex cooperation. The power distribution device 100 is electrically connected to an external power line (not shown), and the input power source Pin is allocated to at least one power distribution. A plurality of output ports 31 in the module 30, and the output unit 31 is controlled to output or turn off the input power source Pin by the management unit 60. The operation method includes: first, when the power distribution device receives the input power source Pin from the external power line, the management unit The first detection flow is executed to determine whether the output port 31 is turned on or off (S100). The management unit 60 can control the shutdown switch unit 311 to turn off the output port 31 through the output detecting unit 33, so that the output port 31 outputs or stops the output power source Po. Then, when the management unit executes the first detection process (S100), if the output port 31 is closed, the management unit 60 externally transmits the information in the management unit (S200), and waits for the troubleshooting to return to the first detection process (S100). The management unit 60 reports the information in the management unit to the external interface through the serial communication or the Internet. The information in the management unit is, for example, but not limited to, the information of the input power pin, the information of the output power Po, and the output 埠 31 is turned on or off. The status, the input information Iic, the leakage information I1c, the at least one output information Ioc, the first range Rt, the second range Roc, the third range Ric, and other information inside the management unit 60. The user can set the second range Roc, the third range Ric, and the custom output port 31 to be turned on or off through the external interface or management unit 60. Then, when the management unit 60 executes the first detection process (S100), if the output port 31 outputs the output power Po, the management unit 60 performs a second detection process to determine whether the output port 31 is turned on or off (S300). When the power distribution apparatus 100 receives the input power source Pin from the external power line, the management unit 60 needs to perform this first detection process (S100) once to provide basic protection of the power distribution apparatus 100 and the back-end load. Finally, after the management unit 60 executes the second detection process (S300), the management unit externally transmits the information in the management unit (S400~S600), and returns to the second detection process (S300). When the management unit 60 executes the first detection process (S100) and the output port 31 outputs the output power Po, the management unit 60 continues to execute the second detection process (S300). At this time, if the management unit 60 determines that at least one output port 31 needs to be turned off and stops outputting the output power Po, the management unit 60 controls the switch unit 311 through the output detecting unit 33 to turn off at least one output port 31. Until the management unit 60 determines that the at least one output port 31 can be turned on again and provides the output power Po, the management unit 60 controls the switch unit 311 to turn on at least one output port 31 through the output detecting unit 33.

Please refer to FIG. 4 for a normal operation flowchart of the power distribution device of the present invention. Referring to FIG. 1 to 3, the normal operation process includes: first, determining whether the leakage information is smaller than the first range (S110). When the management unit 60 determines that the leakage information Ilc is smaller than the first range Rt, the grounding resistance representing the leakage information Ilc is less than 10 Ω and the leakage current is less than 3 mA. Then, the input line voltage and the output voltage are detected (S120). The management unit 60 detects whether the input line voltage between the power terminal 10 and the power distribution module 20 and the output voltage between the power distribution module 20 and the output port 31 are abnormal. When the input line voltage or the output voltage is normal, The first detection flow is ended (S100). It is worth mentioning that the management unit 60 determines that one of the input line voltage and the output voltage is abnormal, when the management unit 60 determines the input power Pin and the power distribution module 20 between the power terminal 10 and the power distribution module 20 to When the voltage difference ΔV of the output power Po of one of the output ports 31 is smaller than the voltage error value Vd, the internal wiring of the power distribution device 100 is complete and can operate normally, but not limited thereto. As long as it can judge the abnormality of the wiring of the power distribution device, it should be included in this embodiment. Then, all of the output ports are controlled to output the output power (S150). After the first detection process (S100), the management unit 60 controls the output port 31 to output the output power Po. It is worth mentioning that the output port 31 can control the output power supply Po or the selective control output power source Po through the external interface or the management unit 60 to effectively and flexibly manage the load of the power distribution device 100 and the power distribution device 100.

After the above detection process, and it is judged that the power distribution apparatus 100 can operate normally, the second detection process is entered (S300). Then, the management unit detects the input information (S310). The input information Iic includes the voltage (phase voltage) information, current (phase current) information, apparent power information, effective power information, virtual power information, frequency information, phase information, phase difference information, and power factor of the power source Pin of the power terminal 10. (PF) information and total harmonic distortion (THD) information. Then, the management unit detects the output information (S320). The output information Ioc includes voltage information, current information, apparent power information, effective power information, frequency information, power factor (PF) information, and total harmonic distortion (THD) information of the output power Po of the output port 31. Then, it is judged whether or not the leakage information is smaller than the first range (S330). In the second detection process (S300), the management unit 60 continuously detects whether the leakage information Ilc is smaller than the first range Rt to ensure the grounding of the power distribution device 100. Finally, right The information in the management unit is transmitted outside and returned to the second detection process (S600). When the management unit 60 performs the above process (S110-S330), the management unit 60 transmits the information in the management unit to the external interface, and returns to the second detection process (S300), so that the user can know the power distribution device 100 and the rear. The power usage of the end load.

Please refer to FIG. 5, which is a flow chart of abnormal protection of the power distribution device of the present invention. And with reference to Figure 1~4. The exception protection process includes: first, ensuring that the output ports remain in the off state (S130). When the steps (S110), (S330) determine that the leakage information Ilc is greater than the first range Rt, or the step (S120) determines that there is an abnormality in the internal line, the management unit 60 controls the output 埠31 to be turned off and the output power supply Po to be stopped. The management unit 60 determines that the grounding impedance of the leakage information Ilc is greater than 10 Ω or the leakage current is greater than 3 mA, indicating that the ground of the power supply terminal 10 and the ground of the external power supply line are not properly connected. At this time, the management unit 60 turns off the switch unit 311 by the control output detecting unit 33, or controls the shutdown unit 90 to control all of the output ports 31 to be turned off and to stop outputting the output power source Po. In step (S120), when the management unit 60 determines the input power Pin between the power supply terminal 10 and the power distribution module 20 and the output power supply Po of one of the power distribution module 20 to the output port 31, the output power Po of the output port Po When the difference ΔV is greater than the voltage error value Vd, the management unit 60 controls the output 埠31 to turn off the output power Po. When the voltage error value Vd is greater than 10 V, it means that the power distribution device 100 is affected by internal circuit damage, poor internal wiring, or poor external wiring. At this time, the management unit 60 turns off the switch unit 311 by the control output detecting unit 33, or controls the shutdown unit 90 to control the output 埠31 to be turned off and the output power supply Po to be stopped. Then, the information in the management unit is transmitted externally (S200), and after waiting for the troubleshooting, the first detection flow is returned (S100).

When the management unit 60 executes the first detection flow (S100) and the output 埠31 is turned off and the output power supply Po is stopped, the ground of the power supply terminal 10 and the ground of the external power supply line are not connected well or the power distribution apparatus 100 is damaged by the internal circuit, and the internals Poor wiring or poor external wiring. If the input power source Pin is delivered under this condition, it is easy to cause damage to the power distribution device 100 or the rear end load. Therefore, the management unit 60 will continuously detect that the output port 31 needs to remain in the off state to protect the power distribution device 100 or the back end load.

Refer to Figure 5 and refer to Figures 1~4. In the second detection flow (S300), it is continuously determined whether or not the power source Pin input from the power distribution apparatus 100 is abnormal. Then, it is judged whether or not the input information is within the third range (S311). The management unit determines whether the input information Iic is within the third range Ric and serves as a basis for turning on or off the output port 31. Finally, all the output ports (S400) in the power distribution module are turned off or on. When the input information Iic exceeds the third range Ric of the at least one power distribution module 30, the management unit 60 correspondingly closes all the output ports 31 of the at least one power distribution module 30 beyond the third range Ric. For example, but not limited to, the third range Ric includes frequencies between 47 Hz and 63 Hz, voltages between 180 and 264 VAC, power factor (PF) greater than 0.7, total harmonic distortion (THD) less than 10%, and duration less than 36 hours. When the management unit 60 determines whether the input information Iic is within the third range Ric, when the input information Iic falls within the third range Ric of the at least one power distribution module 30, the management unit 60 correspondingly controls at least one of the third range Ric. All of the output ports 31 of the power distribution module 30 are turned on and output the output power Po. When the input information Iic is not in the third range Ric of the at least one power distribution module 30, the management unit 60 correspondingly closes all the output ports 31 in the power distribution module 30 not in the third range Ric until the management unit 60 determines that the above is not in the third When the input information Iic in the range Ric is again in the third range Ric, all the output ports 31 in the power distribution module 30 in the third range Ric are turned on.

Refer to Figure 5 and refer to Figures 1~4. In the second detection flow (S300), it is continuously determined whether the output power Po of the power distribution apparatus 100 is abnormal. Then, it is judged whether at least one of the output information is within the second range (S321). The management unit 60 determines whether at least one of the output information Ioc is within a second range Roc and serves as a basis for turning on or off the output port 31. Finally, the output port (S500) is turned off or on. When at least one of the output information Ioc is outside the second range Roc, the management unit 60 correspondingly closes at least one output port 31 outside the second range Roc. For example, but not limited to, the second range Roc includes frequencies between 47 Hz and 63 Hz, a power factor (PF) greater than 0.7, and a total harmonic distortion (THD) of less than 30%. The management unit 60 determines whether the output information Ioc is in the second range Roc. When at least one of the output information Ioc is in the second range Roc, the management unit 60 opens corresponding to the at least one output port 31 controlled in the second range Roc and Output output power Po. When at least one output information Ioc is not in the second range Roc, the management unit 60 is correspondingly closed. The output 埠31 in the second range Roc, until the management unit 60 determines that the output information Ioc that is not in the second range Roc is further within the second range Roc, and then turns on the output 埠31 in the second range Roc.

In summary, the present invention has the following advantages:

1. The power distribution device 100 is provided with an input power source Pin and an output power source Po. When the power distribution device 100 detects that the input power source Pin or the output power source Po is abnormal, the management unit 60 and the external interface are notified to achieve a stable input power source. Pin and output power Po quality.

2. The power distribution device 100 is provided with leakage current detection: when the grounding line of the power distribution device 100 is not connected or even connected to the grounding wire, the management unit 60 and the external interface are notified to avoid the danger of causing human body electrical danger;

3. The power distribution device 100 has a detection before power transmission and continuous detection during operation: a complete detection process is designed for the power distribution device 100 to provide a complete protection mechanism;

4. The power distribution device 100 is equipped with a customized adjustment protection parameter: the user can customize the protection parameters of each power distribution module 30 to adjust the effectiveness of the back end load configuration.

However, the above description is only for the detailed description and the drawings of the preferred embodiments of the present invention, and the present invention is not limited thereto, and is not intended to limit the present invention. The scope of the patent application is intended to be included in the scope of the present invention, and any one skilled in the art can readily appreciate it in the field of the present invention. Variations or modifications may be covered by the patents in this case below.

Claims (18)

A power distribution device includes: a power terminal receiving an input power; a power distribution module electrically connected to the power terminal, and receiving the input power and outputting an output power; at least one power distribution module, each Included in the plurality of output ports, and electrically connected to the power distribution module to receive the output power to the output ports; an input detecting unit electrically connected between the power distribution module and the power terminal, detecting the Inputting power and generating an input information; at least one output detecting unit electrically connecting the output ports, detecting the output power and correspondingly generating at least one output information; and a management unit controlling the at least one output information according to the input information The corresponding outputs are turned on and the output power is output, or the corresponding outputs are controlled to be turned off and the output power is not output. The power distribution device of claim 1, wherein the management unit controls to turn on or off all of the output ports in the at least one power distribution module according to the input information, and controls whether to turn on or off according to the at least one output information. The output is 埠. The power distribution device of claim 1, wherein the power distribution device further comprises: a leakage detecting unit electrically connected to the power terminal and outputting a leakage information to the management unit; wherein the management unit is configured according to the leakage When the information is greater than a first range, the outputs are controlled to be turned off. The power distribution device of claim 1, wherein each of the at least one power distribution module further includes a first custom unit, the first custom unit is electrically connected to the output detection unit, and generates a second range. The power distribution device of claim 4, wherein the management unit determines whether the at least one output information is within the second range, and the management unit correspondingly closes the output ports outside the second range. The power distribution device of claim 1, wherein the power distribution device further comprises a second custom unit, the second custom unit is electrically connected to the management unit, and generates a third range. The power distribution device of claim 6, wherein the management unit determines whether the input information is within the third range, and the management unit closes all of the at least one power distribution module outside the third range. Some output 埠. The power distribution device of claim 7, wherein the management unit determines at least whether the phase difference information and the total harmonic distortion information of the input information are within the third range. The power distribution device of claim 1, wherein the input detecting unit further comprises: a detecting unit electrically connected between the power distribution module and the power terminal, detecting the input power, and outputting a power source Information; a computing unit electrically connected to the detecting unit and converting the power information to the input information. The power distribution device of claim 1, wherein the power distribution device further comprises a transmission unit, the transmission unit is electrically connected to the management unit, and the information in the management unit is externally transmitted. A power distribution device operating method, the power distribution device allocates an input power to a plurality of outputs, each output an output power, and controls the outputs to be turned on or off by a management unit, the operation method includes: (a) when the power distribution device receives the input power, the management unit performs a first detection process to determine whether the outputs are turned on or off; (b) when the management unit performs the first detection process, When the outputs are closed, the management unit transmits the information in the management unit to the outside; (c) after the management unit executes the first detection process, if the output ports are all enabled, the management unit performs a second Detecting a process to determine whether to control the outputs to be turned on and output the output power, or to control the corresponding outputs to be turned off and not outputting the output power; (d) after the management unit performs the second detection process, The management unit externally transmits the information in the management unit and returns to the second detection process. The power distribution device operation method of claim 11, wherein the first detection process comprises: (a1) when the management unit determines that the leakage information is greater than a first range, the management unit controls the outputs to be turned off. The method for operating a power distribution device according to claim 11, wherein the step (b) further comprises: (b1) the management unit continuously detecting that the outputs need to remain in a closed state. The power distribution device operating method according to claim 11, wherein the second detecting process comprises: (c1) the management unit detecting an input information; and (c2) the management unit detecting at least one output information. The method for operating a power distribution device according to claim 14, wherein the step (c1) further comprises: (c11) the management unit determining whether the input information is within a third range and closing outside the third range All of the output ports in the at least one power distribution module. The method for operating a power distribution device according to claim 14, wherein the step (c1) further comprises: (c12) the management unit determining whether the input information is within a third range and opening in the third range All of the output ports in the at least one power distribution module. The method for operating a power distribution device according to claim 14, wherein the step (c2) further comprises: (c21) the management unit determining whether the at least one output information is in a second range, and the corresponding closing is The output 埠 outside the second range. The method for operating a power distribution device according to claim 14, wherein the step (c2) further comprises: (c22) the management unit determining whether the at least one output information is in a second range, and the corresponding opening is The output 埠 in the second range.