Power supply management device and system and electronic equipment

Abstract

The invention relates to a power supply management device and system and electronic equipment. The power supply management device comprises a main control unit, and a power supply unit, a clock unit, a metering unit and a storage unit which are respectively connected with the main control unit. The power supply unit is connected with the metering unit and is used for carrying out voltage conversion on external input voltage and supplying power to the metering unit and the main control unit; the clock unit is used for generating a standard timestamp; the metering unit is used for responding to a metering instruction of the main control unit and acquiring electric energy data during maintenance based on the standard timestamp; and the storage unit is used for storing the electric energy data acquired by the metering unit. Accuracy of electric energy data can be ensured in the maintenance period of equipment overhaul, so that no loss of electric quantity metering is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic circuit, in particular to a power supply management device, system and electronic equipment. BACKGROUND

[0002] With the acceleration of the evolution of the power system towards high reliability and intelligence, the limitations of traditional high-voltage power supply metering methods, such as high supply and high metering, in terms of uninterrupted operation ability, operation and maintenance efficiency and safety are increasingly prominent.

[0003] However, the high-voltage power supply needs to be cut off during maintenance or fault handling of metering equipment to ensure operation safety, which will cause user power supply interruption, directly affecting industrial production continuity, commercial operation efficiency and resident life convenience. Moreover, power outage operation involves multi-link processes such as dispatching approval, site isolation, device switching, which is time-consuming and long, and easy to cause chain power outage risk, which not only reduces the power supply reliability index, but also restricts the rapid response ability of power grid enterprises to emergencies. SUMMARY

[0004] Based on this, the present application provides a power supply management device, system and electronic equipment.

[0005] According to some embodiments, the present application provides a power supply management device for managing power data during maintenance; the power supply management device comprises a master control unit, a power supply unit, a clock unit, a metering unit and a storage unit connected with the master control unit respectively; the power supply unit is connected with the metering unit, for voltage conversion of external input voltage and power supply to the metering unit and the master control unit; the clock unit is used to generate a standard time stamp; the metering unit is used to obtain power data during maintenance in response to a metering instruction of the master control unit and based on the standard time stamp; and the storage unit is used to store the power data obtained by the metering unit.

[0006] In the power supply management device of the above example, by setting the master control unit, the power supply unit, the clock unit, the metering unit and the storage unit, online hot swapping replacement and live maintenance of the device are realized, and user power supply is not interrupted throughout the process. Moreover, the metering unit obtains power data during maintenance in response to a metering instruction of the master control unit and based on the standard time stamp, ensuring the accuracy of power data during device maintenance, thereby ensuring no loss of power metering. In this way, not only is the power supply continuity ensured by realizing zero power outage maintenance, and the power data during bypass switching is ensured not to be lost to improve power supply reliability, but also the operation time is compressed and the frequency of high-voltage live operation is reduced.

[0007] In some embodiments, the power supply management device further comprises a Bluetooth module unit and a printing unit; the Bluetooth module unit is connected with the master control unit, and is configured to acquire the power data in response to a communication instruction of the master control unit; the printing unit is wirelessly connected with the Bluetooth module unit, and is configured to print the power data acquired by the Bluetooth module unit.

[0008] In some embodiments, the power supply management device further comprises a loop detection unit and a phase sequence detection unit connected with the master control unit respectively; the loop detection unit comprises a loop inspection module and a current transformer connected with each other, and is configured to detect a loop state of the power supply loop during the maintenance and generate corresponding loop state data; the phase sequence detection unit is configured to detect a phase sequence state of the voltage and the current in the power supply loop during the maintenance and generate corresponding phase sequence state data; wherein the master control unit is further configured to acquire the loop state data and the phase sequence state data and generate a corresponding warning instruction.

[0009] In some embodiments, the power supply management device further comprises a display unit and a key unit connected with the master control unit respectively; the display unit is configured to display the power data, receive the warning instruction generated by the master control unit, and display a corresponding warning signal; the key unit is configured to generate a corresponding control signal in response to a user instruction.

[0010] In some embodiments, the metering unit comprises a digital-to-analog converter, a reference voltage circuit and a digital signal processing circuit connected with each other; the digital-to-analog converter is configured to sample the power data in the power supply circuit during the maintenance; the reference voltage circuit is configured to provide a reference voltage; and the digital signal processing circuit is configured to measure at least one of active power, reactive power, apparent power, active energy, reactive energy, each-phase current, voltage effective value, power factor, phase angle and frequency of each phase and the combined phase in the power supply circuit during the maintenance.

[0011] In some embodiments, the storage unit is configured to record the power data acquired by the metering unit during the target number of times of maintenance; the storage unit is further configured to record a start time and an end time of the maintenance based on a standard time stamp; and the power data at least includes forward active power, reverse active power, forward reactive power and reverse reactive power of the power supply circuit during the maintenance.

[0012] According to some embodiments, the application further provides a power supply management system, which adopts the power supply management device in any of the above embodiments to at least implement the native data display function and the parameter setting query function of the power supply management system; the power supply management system at least comprises a native data display module and a parameter setting query module, the native data display module is used to implement the native data display function of the power supply management system, and the parameter setting query module is used to implement the parameter setting query function of the power supply management system; wherein the native data display module at least comprises an electric energy data display unit, the electric energy data display unit is used to display the electric energy data acquired by the metering unit; the parameter setting query module at least comprises a terminal time setting unit, the terminal time setting unit is used to generate the current system time based on the standard timestamp in response to the user instruction.

[0013] In the power supply management system of the above embodiments, the power supply management device at least implements the native data display function and the parameter setting query function of the power supply management system, which can directly display the electric energy data acquired by the metering unit, and the terminal time setting unit generates the current system time based on the standard timestamp in response to the user instruction, accurately matches the current time, and thus accurately displays the power consumption during maintenance. In this way, not only the power supply continuity is ensured and the power supply reliability is improved by realizing zero power-off maintenance and ensuring that the electric energy data is not lost during bypass switching, but also the operation time is compressed and the frequency of high-voltage live work is reduced.

[0014] In some embodiments, the storage unit of the power supply management device is used to record the electric energy data acquired by the metering unit during the target number of maintenances; the native data display module further comprises a metering record display unit, the metering record display unit is used to display the electric energy data acquired by the metering unit during the target number of maintenances recorded by the storage unit.

[0015] In some embodiments, the power supply management device further comprises a Bluetooth module unit and a printing unit; the Bluetooth module unit is connected with the master control unit and is used to acquire the electric energy data in response to the communication instruction of the master control unit; the printing unit is wirelessly connected with the Bluetooth module unit and is used to print the electric energy data according to the electric energy data acquired by the Bluetooth module unit.

[0016] The power supply management system further comprises a device management and maintenance module, the device management and maintenance module is used to implement the device management and maintenance function of the power supply management system; the device management and maintenance module comprises a printing metering data unit, a version information unit and a terminal initialization unit; the version information unit is used to acquire the version information of the power supply management system; the terminal initialization unit executes the hardware initialization operation, the data initialization operation and the factory reset operation in response to the corresponding user instruction; the printing metering data unit is used to acquire the printing data of the printing unit.

[0017] According to some embodiments, the application further provides an electronic device, which comprises a shell and the power supply management device of any one of the above embodiments, and is located at least partially in the accommodation space of the shell. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A structural schematic diagram of a power supply management device according to an embodiment of the application is provided.

[0019] Figure 2 A structural schematic diagram of a power supply management device according to another embodiment of the application is provided.

[0020] Figure 3 A circuit schematic diagram of a master control unit in a power supply management device according to an embodiment of the application is provided.

[0021] Figure 4 A circuit schematic diagram of a Bluetooth module unit in a power supply management device according to an embodiment of the application is provided.

[0022] Figure 5 A circuit schematic diagram of a loop detection unit in a power supply management device according to an embodiment of the application is provided.

[0023] Figure 6 A structural schematic diagram of a power supply management system according to an embodiment of the application is provided.

[0024] Reference signs: 10, master control unit; 11, master control chip; 20, power supply unit; 30, clock unit; 40, metering unit; 50, storage unit; 60, Bluetooth module unit; 61, Bluetooth chip; 70, printing unit; 80, loop detection unit; 81, loop inspection module; 82, current transformer; 90, phase sequence detection unit; 100, display unit; 110, key unit; 120, RS485 communication unit; X1, local data display module; X11, electric energy data display unit; X12, loop phase sequence state display unit; X13, metering record display unit; X2, parameter setting query module; X21, PTCT setting unit; X22, terminal time setting unit; X23, liquid crystal password setting unit; X3, device management and maintenance module; X31, version information unit; X32, terminal initialization unit; X33, printing metering data unit. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The preferred embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] In the case of using "include", "have", and "contain" described herein, unless an explicit limiting term is used, such as "only", "consisting of", and the like, another component can be added. Unless otherwise mentioned, the singular form of the term can include the plural form, and it cannot be understood as one in number.

[0028] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without departing from the scope of the present application, a first element can be called a second element, and similarly, a second element can be called a first element.

[0029] In this application, unless otherwise explicitly specified and limited, the terms "connected", "connected", and the like should be understood in a broad sense, for example, it can be directly connected, or indirectly connected through an intermediate medium, it can be internal communication of two elements or interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0030] It should be noted that the diagrams provided in the embodiments only illustrate the basic concept of the present disclosure in a schematic manner, and although only the components related to the present disclosure are shown in the diagrams, the actual implementation does not draw the number, shape and size of the components, the actual implementation of each component can be a random change, and the component layout pattern can be more complex.

[0031] With the rapid development of power systems towards high reliability and intelligence, the limitations of traditional high-voltage power supply metering methods (such as high supply and high metering) in non-power outage operation ability, operation and maintenance efficiency and safety are gradually highlighted. On the one hand, in order to ensure the safety of operation, the high-voltage power supply must be cut off during maintenance or fault handling, which inevitably leads to the interruption of user power supply, seriously affecting the continuity of industrial production, the operation efficiency of enterprises and the convenience of residents. This "power outage-maintenance" mode, although it ensures the safety of operation, brings obvious economic loss and user experience decline.

[0032] On the other hand, high-voltage live-line work can avoid power failure, but there is a high risk of electric shock and serious safety hazards such as electric arc burns. Work in a high-voltage environment requires complex insulation protection measures, strict operating procedures, and highly qualified professionals, which not only increases the cost and difficulty of operation and maintenance, but also limits the flexibility in dealing with unexpected situations.

[0033] In addition, power failure work usually involves scheduling approval, site isolation, equipment switching and other links, and the process is complicated and time-consuming. In the case of unexpected events or temporary maintenance, this series of links can easily cause "chain power failure", reduce the reliability index of power supply, and even cause large-scale power supply interruption. At the same time, the long operation process also hinders the rapid response capability of power grid enterprises to unexpected events, affecting their efficiency and ability to deal with unexpected failures.

[0034] Based on this, in order to solve the above problems, the embodiments of the present application provide a power supply management device, system and electronic equipment.

[0035] Please refer to Figure 1 The present application provides a power supply management device for managing power data during maintenance. The power supply management device includes a master control unit 10, and a power supply unit 20, a clock unit 30, a metering unit 40 and a storage unit 50 connected with the master control unit 10 respectively.

[0036] The power supply unit 20 is connected with the metering unit 40, for voltage conversion of external input voltage, and power supply to the metering unit 40 and the master control unit 10, so as to ensure that the metering unit 40 and the master control unit can work normally and stably.

[0037] The clock unit 30 is used for generating a standard timestamp. In some embodiments, the clock unit 30 includes an independent high-precision hard clock chip. For example, the clock unit 30 also includes an independent battery, which can ensure that the clock unit 30 can still accurately time in the case of power failure. And in some embodiments, the clock unit 30 will perform a synchronous clock chip operation every fixed preset time interval, so as to ensure that the timing error is within the allowable range. For example, the preset time can be one hour.

[0038] The metering unit 40 is used for obtaining power data during maintenance in response to the metering instruction of the master control unit 10 and based on the standard timestamp. The power data at least includes forward active power, reverse active power, forward reactive power and reverse reactive power of the power supply circuit during maintenance.

[0039] For example, the metering unit 40 converts and calculates the collected voltage signal and current signal after responding to the metering instruction of the master unit 10, and transmits the signal to the master unit 10 through a preset communication mode. For example, the metering unit 40 can transmit the collected electric signal to the master unit 10 through a serial peripheral interface (SPI) communication.

[0040] It can be understood that the metering unit 40 can be composed of a sampling device and a metering chip. The sampling device can be selected from high-precision and high-stability sampling devices. In some embodiments, the metering unit 40 includes a digital-to-analog converter, a reference voltage circuit, and a digital signal processing circuit connected to each other. That is, the digital-to-analog converter, the reference voltage circuit, and the digital signal processing circuit are collectively composed. The digital-to-analog converter is used to sample the electric energy data in the power supply circuit during maintenance; the reference voltage circuit is used to provide a reference voltage; and the digital signal processing circuit is used to measure at least one of the active power, the reactive power, the apparent power, the active energy, the reactive energy, the effective value of the phase current and the phase voltage, the power factor, the phase angle, and the frequency of each phase and the combined phase in the power supply circuit during maintenance.

[0041] In some embodiments, the digital-to-analog converter in the metering chip is a second-order sigma-delta digital-to-analog converter, and the metering chip includes a plurality of second-order sigma-delta digital-to-analog converters. It can be understood that the sigma-delta digital-to-analog converter can continuously oversample the input signal at a sampling rate much higher than the Nyquist frequency, and use noise shaping technology to move the conversion error to the high frequency range, and then filter it out through a digital filter, thereby obtaining a high-precision digital output.

[0042] The storage unit 50 is used to store the electric energy data acquired by the metering unit 40. In some embodiments, the storage unit 50 is a FLASH device. For example, the storage unit 50 has a storage capacity of 2 Gb, can store a large amount of data, and ensures that the device data is not lost for 10 years.

[0043] In some embodiments, the storage unit 50 is used to record the electric energy data acquired by the metering unit 40 during the target number of maintenance periods; the storage unit 50 is also used to record the start time and the end time of the maintenance period based on a standard time stamp; for example, the target number is 10.

[0044] In some embodiments, the storage unit 50 is also used to record the maintenance start time and the maintenance end time during the maintenance period. In some embodiments, the storage unit 50 is also used to record the abnormal event log of the power supply management device, such as the log when the power supply management device is powered off or loses voltage.

[0045] In the power supply management device of the above example, by setting the master control unit 10, the power supply unit 20, the clock unit 30, the metering unit 40, and the storage unit 50, the online hot-swappable replacement and live maintenance of the device are realized, and the user power supply does not need to be interrupted throughout the process. Moreover, by the metering unit 40 responding to the metering instruction of the master control unit 10 and based on the standard time stamp, the electric energy data during maintenance is obtained, the accuracy of the electric energy data during the maintenance of the device is ensured, and the electric energy metering is ensured to be complete. In this way, not only the power supply continuity is ensured by realizing zero power outage maintenance, the electric energy data is ensured not to be lost during bypass switching to improve power supply reliability, but also the operation time is compressed, and the frequency of high-voltage live operation is reduced.

[0046] Please continue to refer to Figure 1 In some embodiments, the power supply management device further comprises a Bluetooth module unit 60 and a printing unit 70; the Bluetooth module unit 60 is connected with the master control unit 10, and is used to obtain electric energy data in response to a communication instruction of the master control unit 10; the printing unit 70 is wirelessly connected with the Bluetooth module unit 60, and is used to print the electric energy data obtained by the Bluetooth module unit 60. It can be understood that after the maintenance is completed, the electric energy data during the maintenance can be quickly printed on the maintenance site by the printing unit 70 for the user to confirm, so as to protect the interests of the user and the enterprise, avoid complaints and disputes, and save the processes of scheduling approval and device isolation in traditional power outage operation.

[0047] Please refer to Figure 2 In some embodiments, the power supply management device further comprises a loop detection unit 80 and a phase sequence detection unit 90 connected with the master control unit 10, respectively.

[0048] In some embodiments, the power supply management device further comprises a display unit 100 and a key unit 110 connected with the master control unit 10, respectively.

[0049] The loop detection unit 80 is used to detect the loop state of the power supply loop during maintenance, and generate corresponding loop state data; for example, the loop detection unit 80 can detect the states of normal connection of current metering loop, primary / secondary loop shunt, secondary loop open circuit, loop series rectifier device, etc. in real time.

[0050] The phase sequence detection unit 90 is used to detect the phase sequence state of the voltage and current in the power supply loop during maintenance, and generate corresponding phase sequence state data. The master control unit 10 is further used to obtain the loop state data and the phase sequence state data, and generate corresponding warning instructions.

[0051] It can be understood that the phase sequence detection unit 90 can determine whether the phase sequence error of the voltage and current in the power supply loop during maintenance occurs error, and generate corresponding first phase sequence state data or second phase sequence state data. For example, the first phase sequence state data indicates that the phase sequence of the voltage and current is normal, and the second phase sequence state data indicates that the phase sequence of the voltage and current is abnormal. The main control unit 10 can be used to obtain the second phase sequence state data and generate a corresponding phase sequence abnormality warning instruction.

[0052] The display unit 100 is used to display the electric energy data, and receive the warning instruction generated by the main control unit 10, and display a corresponding warning signal. For example, the display unit 100 can adopt a 160*160 dot matrix display screen. In some embodiments, the display unit 100 can also be used to display parameter setting and query, management and maintenance, display real-time voltage, current, power, active and reactive electric energy and nearly 10 times of metering records, setting and query of device clock, setting and query of current transformer (CT) / voltage transformer (PT), and setting of device access password. The functions of management and maintenance include initialization of hardware, parameters and data of the device, adjustment of display screen gray scale, zero of electric quantity, query of terminal version, query of built-in battery and clock battery voltage, calculation and recording parameters.

[0053] The key unit 110 is used to generate a corresponding control signal in response to a user instruction. For example, the display unit 100 is also used to receive the control signal generated by the control unit, and switch the data displayed by the display unit 100. In some embodiments, the key unit 110 includes 7 keys, and each key has a long press function and a short press function, so that the device can be more conveniently controlled in cooperation with the display screen. For example, the 7 keys in the key unit 110 are up, down, left, right, cancel, confirm, and start respectively. Long pressing the start key for 2 seconds will generate a start metering signal, and long pressing the start key again for 2 seconds will generate an end metering signal.

[0054] Please continue to refer to Figure 2 In some embodiments, the power supply management device further includes an RS485 communication unit 120. The RS485 communication unit 120 can provide the power supply management device with standardized industrial wired communication capability.

[0055] Please refer to Figure 3In some embodiments, the main control unit 10 comprises a main control chip 11. In some embodiments, the main control chip 11 has an execution speed of 300 MHz, and the main control chip 11 is built-in with a 64 MB DDR II memory, and the main control chip 11 is peripherally integrated with storage, clock, metering, Bluetooth communication and other peripheral interfaces. For example, the main control chip 11 can adopt a Xintang NUC980C chip, and the main control chip 11 has 128 pins, wherein the pin 64 and the pin 128 of the main control chip 11 are used for grounding, and the pin 1 of the main control chip 11 is connected to the VD33 signal through a 10kΩ resistor R1. The pins 21 to 24 of the main control chip 11 are connected to the VD33 signal through resistors R12 to R15, respectively, wherein the resistors R12 to R15 each have a resistance of 10kΩ. The pin 32 and the pin 33 of the main control chip 11 are used for connecting a digital-to-analog converter, wherein the pin 32 is connected to the ACSS_ADC signal, and the pin 33 is connected to the VD33_ADC signal.

[0056] Referring to Figure 4 In some embodiments, the Bluetooth module unit 60 comprises a Bluetooth chip 61. For example, the antenna of the Bluetooth chip 61 is a built-in PCB antenna, which is convenient for processing, low in cost, and stable in performance. For example, the pin 4 of the Bluetooth chip 61 is connected to the pin 97 of the main control chip 11 through a resistor R6, which can switch the working mode of the Bluetooth module, set various parameter data, and when the high level is in the transparent mode, and when the low level is in the command module. The pin 5 of the Bluetooth chip 61 is connected to the pin 96 of the main control chip 11 through a resistor R7, which can prompt the connection state of the Bluetooth module, and when the high level is in the connection state, and when the low level is in the disconnected state. The pin 16 and the pin 18 of the Bluetooth chip 61 are connected to the pin 98 and the pin 99 of the main control chip 11 through resistors R9 and R8, respectively, and are connected to the main control chip 11 for transmitting data. The pin 24 of the Bluetooth chip 61 is connected to the pin 92 of the main control chip 11, and when the pin 24 of the Bluetooth chip 61 is reset, the pin is in a high level state. When the pin 92 of the main control chip 11 is low, the Bluetooth chip 61 is reset. The resistors R6 to R9 each have a resistance of 10kΩ.

[0057] Referring to Figure 5The loop detection unit 80 comprises a loop inspection module 81 and a current transformer 82 connected with each other. The current transformer 82 can be a combined current transformer 82 of ABC three-phase according to three-phase electricity. The pin 1 of the loop inspection module 81 is connected to the pin 8 of the combined current transformer 82 of ABC three-phase respectively. The pin 2 of the loop inspection module 81 is connected to the pin 10 of the combined current transformer 82 of ABC three-phase respectively. The pin 3 of the loop inspection module 81 is connected to the pin 9 of the combined current transformer 82 of ABC three-phase respectively. The pin 4 of the loop inspection module 81 is connected to the pin 7 of the combined current transformer 82 of A-phase. The pin 5 of the loop inspection module 81 is connected to the pin 7 of the combined current transformer 82 of B-phase. The pin 6 of the loop inspection module 81 is connected to the pin 7 of the combined current transformer 82 of C-phase. The pin 11 and the pin 12 of the loop inspection module 81 are grounded. The pin 3 and the pin 5 of the current transformer 82 are grounded, and the pin 4 is connected to a 5V excitation voltage.

[0058] Please refer to Figure 6 According to some embodiments, the application further provides a power supply management system, which adopts the power supply management device in any of the above embodiments to at least realize the native data display function and the parameter setting query function of the power supply management system.

[0059] Please refer to Figures 1 to 6 It should be understood that the power supply management system at least comprises a native data display module X1 and a parameter setting query module X2. The native data display module X1 is used to realize the native data display function of the power supply management system, and the parameter setting query module X2 is used to realize the parameter setting query function of the power supply management system. The native data display module X1 at least comprises an electric energy data display unit X11, which is used to display the electric energy data acquired by the metering unit 40. The parameter setting query module X2 at least comprises a terminal time setting unit X22, which is used to generate the current system time based on the standard time stamp in response to the user instruction.

[0060] In the power supply management system of the above embodiments, the power supply management device at least realizes the native data display function and the parameter setting query function of the power supply management system, which can directly display the electric energy data acquired by the metering unit 40. The terminal time setting unit X22 generates the current system time based on the standard time stamp in response to the user instruction, accurately matches the current time, and thus accurately displays the power consumption during the maintenance period. In this way, the power supply continuity is ensured by realizing zero power-off maintenance, the electric energy data is not lost during the bypass switching to improve the power supply reliability, the working time is compressed, and the frequency of high-voltage live working is reduced.

[0061] In some embodiments, the storage unit 50 of the power supply management device is configured to record the power data acquired by the metering unit 40 during the target number of maintenance; the local data display module X1 further comprises a metering record display unit X13 configured to display the power data acquired by the metering unit 40 during the target number of maintenance recorded by the storage unit 50.

[0062] In some embodiments, the power supply management device further comprises a Bluetooth module unit 60 and a printing unit 70; the Bluetooth module unit 60 is connected to the master control unit 10 and configured to acquire the power data in response to the communication instruction of the master control unit 10; the printing unit 70 is wirelessly connected to the Bluetooth module unit 60 and configured to print the power data according to the power data acquired by the Bluetooth module unit 60.

[0063] The power supply management system further comprises a device management and maintenance module X3 configured to implement the device management and maintenance function of the power supply management system; the device management and maintenance module X3 comprises a printing metering data unit X33, a version information unit X31 and a terminal initialization unit X32; the version information unit X31 is configured to acquire the version information of the power supply management system; the terminal initialization unit X32 is configured to perform a hardware initialization operation, a data initialization operation and a factory setting recovery operation in response to a corresponding user instruction; the printing metering data unit X33 is configured to acquire the printing data of the printing unit 70. For example, the printing data comprises a maintenance start time, a maintenance end time, a maintenance duration and a metering code, etc.

[0064] In some embodiments, the power supply management device further comprises a loop detection unit 80 and a phase sequence detection unit 90 connected to the master control unit 10, respectively. The loop detection unit 80 is configured to detect the loop state of the power supply loop during the maintenance and generate corresponding loop state data; for example, the loop detection unit 80 can detect the state of the current metering loop normally connected, the primary / secondary loop shunt, the secondary loop open circuit, the loop series connection rectifier device, etc. in real time. The phase sequence detection unit 90 is configured to detect the phase sequence state of the voltage and current in the power supply loop during the maintenance and generate corresponding phase sequence state data. The master control unit 10 is further configured to acquire the loop state data and the phase sequence state data and generate a corresponding warning instruction.

[0065] In some embodiments, the local data display module X1 further comprises a loop and phase sequence state display unit X12 configured to display the ABC three-phase electric loop state and the three-phase voltage and current phase sequence state. Moreover, the power supply management system further comprises a fault alarm and self-locking protection mechanism to eliminate the metering deviation or electrical safety hazard caused by wiring errors from the source, thereby ensuring the safety of the power grid operation and the accuracy of the electricity billing.

[0066] In some embodiments, the parameter setting query module X2 further comprises a PTCT setting unit X21 and a liquid crystal password setting unit X23. The PTCT setting unit X21 is configured to set the values of the potential transformer (PT) and the current transformer (CT) according to the actual situation on site. The liquid crystal password setting unit X23 is configured to modify the password required for the encryption operation.

[0067] According to some embodiments, the present application further provides an electronic device, which comprises a shell and the power supply management device in any of the above embodiments, and is at least partially located in the accommodation space of the shell. Due to the adoption of the better power supply management device, the electronic device in the above embodiments has better performance.

[0068] Please note that the above embodiments are only for illustrative purposes and do not mean to limit the present disclosure.

[0069] Each of the embodiments in the present specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0070] Each of the technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure.

[0071] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the scope of the patent. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A power supply management device, characterized by comprising: The power supply management device comprises a master control unit, a power supply unit, a clock unit, a metering unit and a storage unit connected with the master control unit respectively; The power supply unit is connected with the metering unit, and is configured to convert an external input voltage and supply power to the metering unit and the master control unit; The clock unit is configured to generate a standard time stamp; The metering unit is configured to acquire power data during maintenance in response to a metering instruction of the master control unit and based on the standard time stamp; The storage unit is configured to store the power data acquired by the metering unit.

2. The power supply management device according to claim 1, characterized by The power supply management device further comprises a Bluetooth module unit and a printing unit; The Bluetooth module unit is connected with the master control unit, and is configured to acquire the power data in response to a communication instruction of the master control unit; The printing unit is wirelessly connected with the Bluetooth module unit, and is configured to print the power data acquired by the Bluetooth module unit.

3. The power management apparatus according to claim 1, wherein The power supply management device further comprises a loop detection unit and a phase sequence detection unit connected with the master control unit respectively; The loop detection unit comprises a loop inspection module and a current transformer connected with each other, and is configured to detect a loop state of a power supply loop during maintenance and generate corresponding loop state data; The phase sequence detection unit is configured to detect a phase sequence state of voltage and current in the power supply loop during maintenance and generate corresponding phase sequence state data; The master control unit is further configured to acquire the loop state data and the phase sequence state data and generate corresponding warning instructions.

4. The power supply management device according to claim 3, characterized by The power supply management device further comprises a display unit and a key unit connected with the master control unit respectively; The display unit is configured to display the power data and receive the warning instructions generated by the master control unit to display corresponding warning signals; The key unit is configured to generate corresponding control signals in response to user instructions.

5. Power supply management device according to any of claims 2-4, characterized in that, The metering unit comprises a digital-to-analog converter, a reference voltage circuit and a digital signal processing circuit connected with each other; The digital-to-analog converter is configured to sample power data in a power supply circuit during maintenance; The reference voltage circuit is configured to provide a reference voltage; The digital signal processing circuit is configured to measure at least one of active power, reactive power, apparent power, active energy, reactive energy, effective value of phase current and voltage, power factor, phase angle and frequency of each phase and combined phase in the power supply circuit during maintenance.

6. Power supply management device according to any of claims 2-4, characterized in that, The storage unit is configured to record power data acquired by the metering unit during maintenance for a target number of times; The storage unit is further configured to record a start time and an end time of maintenance based on the standard time stamp; The power data at least comprises forward active power, reverse active power, forward reactive power and reverse reactive power of the power supply circuit during maintenance.

7. A power supply management system, characterized by, The power supply management device as claimed in any one of claims 1-6 is adopted to at least realize native data display function and parameter setting query function of the power supply management system. The power supply management system at least comprises a native data display module and a parameter setting query module, the native data display module is used to realize the native data display function of the power supply management system, and the parameter setting query module is used to realize the parameter setting query function of the power supply management system; The native data display module at least comprises an electric energy data display unit, and the electric energy data display unit is used to display the electric energy data acquired by the metering unit; The parameter setting query module at least comprises a terminal time setting unit, and the terminal time setting unit is used to generate the current system time based on the standard time stamp in response to the user instruction.

8. The power supply management system of claim 7, wherein, The storage unit of the power supply management device is used to record the electric energy data acquired by the metering unit during the target number of times of maintenance; The native data display module further comprises a metering record display unit, and the metering record display unit is used to display the electric energy data acquired by the metering unit during the target number of times of maintenance recorded by the storage unit.

9. The power management system of claim 7, wherein, The power supply management device further comprises a Bluetooth module unit and a printing unit; The Bluetooth module unit is connected with the master control unit, and is used to acquire the electric energy data in response to the communication instruction of the master control unit; The printing unit is wirelessly connected with the Bluetooth module unit, and is used to print the electric energy data according to the electric energy data acquired by the Bluetooth module unit; The power supply management system further comprises a device management and maintenance module, and the device management and maintenance module is used to realize the device management and maintenance function of the power supply management system; The device management and maintenance module comprises a printing metering data unit, a version information unit and a terminal initialization unit; The version information unit is used to acquire the version information of the power supply management system; The terminal initialization unit executes the hardware initialization operation, the data initialization operation and the factory reset operation in response to the corresponding user instruction; The printing metering data unit is used to acquire the printing data of the printing unit.

10. An electronic device, comprising: It comprises: A shell; The power supply management device described in any one of claims 1-6 is at least partially located in the accommodation space of the shell.

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