Portable electric energy metering analysis simulation device

Abstract

The invention discloses a portable electric energy metering analysis simulation device. The device comprises a simulation control unit, a three-phase simulation power supply generation unit, a display screen and a plurality of output wiring terminals. The simulation control unit is used for obtaining fault simulation information, determining display parameters and voltage parameters and current parameters corresponding to each output wiring terminal based on the fault simulation information, and sending the voltage parameters and the current parameters corresponding to each output wiring terminal to the three-phase simulation power supply generation unit. The display screen is controlled to display the display parameters; the three-phase simulation power supply generation unit is used for outputting metering voltage and metering current to each output wiring terminal based on the voltage parameter and the current parameter corresponding to each output wiring terminal, and the metering voltage and the metering current output to the output wiring terminal are respectively the same as the voltage parameter and the current parameter corresponding to the output wiring terminal. According to the scheme, the fault simulation efficiency of the electric energy metering device such as the electric energy meter can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric energy metering, and in particular to a portable electric energy metering analysis simulation device. Background Art

[0002] At present, when conducting power training for personnel, major power companies need to use power metering and analysis equipment to simulate various faults that occur in power metering devices such as power meters to meet the training requirements for fault analysis of power metering devices. At present, there are many types of power metering and analysis equipment at home and abroad, which can basically meet the training requirements for fault analysis such as wrong wiring analysis and measurement abnormality analysis of power metering devices in a three-phase balanced state.

[0003] At present, the existing electric energy metering and analysis equipment includes electronic loads, voltage and current transformers, joint junction boxes, electric energy meters and other power equipment and electric energy metering devices. When the electric energy metering and analysis equipment is used to simulate the fault of the electric energy metering device, the above-mentioned power equipment sends three-phase voltage and three-phase current to the electric energy metering device. Further, the electric energy metering device is adjusted to put the electric energy metering device in a specific fault state, and the electric energy metering device in the specific fault state collects the three-phase voltage and three-phase current to obtain the metering voltage and metering current, and the display screen of the electric energy metering device displays the electric power parameter values ​​obtained by collecting the three-phase voltage and three-phase current, so that relevant personnel can collect the metering voltage and metering current at the wiring terminals of the electric energy metering and analysis equipment, and combine the display screen to display various electric power parameter values, and perform fault analysis on the electric energy metering device that simulates the specific fault, and complete the training work on the fault analysis of the electric energy metering device.

[0004] However, the power equipment required by current electric energy metering and analysis equipment is often integrated inside a cabinet, which makes the volume of the above cabinet too large. Before training and use, the power equipment needs to be assembled in a training room and power cables and communication cables need to be laid. At the same time, the electric energy metering and analysis equipment and the power equipment are not easy to move after installation, and the power equipment cannot be quickly transferred. As a result, a lot of effort needs to be spent on arranging the hardware environment before performing fault simulation on the electric energy metering device through the existing electric energy metering and analysis equipment, which seriously reduces the efficiency of fault simulation on the electric energy metering device. Summary of the invention

[0005] In view of this, the present application provides a portable electric energy metering analysis simulation device, the main purpose of which is to solve the technical problem of low efficiency of existing electric energy metering analysis equipment when performing fault simulation on electric energy metering devices.

[0006] According to a first aspect of the present invention, there is provided a portable electric energy metering and analysis simulation device, the portable electric energy metering and analysis simulation device comprising a simulation control unit, a three-phase simulation power supply generating unit, a display screen and a plurality of output wiring terminals;

[0007] The simulation control unit is connected to the display screen and the three-phase simulation power generation unit respectively, and is used to obtain fault simulation information, and determine the display parameters corresponding to the fault simulation information, the voltage parameters and current parameters corresponding to each of the output terminals based on the fault simulation information, and send the voltage parameters and current parameters corresponding to each of the output terminals to the three-phase simulation power generation unit, and control the display screen to display the display parameters;

[0008] The three-phase simulated power generation unit is also connected to each of the output terminals, and is used to receive the voltage parameter and current parameter corresponding to each of the output terminals, and output the metered electric energy to each of the output terminals, wherein the metered electric energy includes the metered voltage and the metered current;

[0009] Among them, the metering voltage output by the three-phase analog power generation unit to the output terminal is the same as the voltage parameter corresponding to the output terminal, and the metering current is the same as the current parameter corresponding to the output terminal.

[0010] In an optional embodiment, the simulation control unit includes a data integration processing unit and a metering device fault simulation control unit; the data integration processing unit is connected to the metering device fault simulation control unit, for receiving the fault simulation information, and sending the fault simulation information to the metering device fault simulation control unit; the metering device fault simulation control unit is respectively connected to the three-phase simulation power supply generating unit and the display screen, for receiving the fault simulation information, and determining the display parameters pre-mapped and stored with the fault simulation information, the voltage parameters and current parameters corresponding to each of the output terminals based on the fault simulation information, and sending the voltage parameters and current parameters corresponding to each of the output terminals to the three-phase simulation power supply generating unit, and controlling the display screen to display the display parameters.

[0011] In an optional embodiment, the data integration processing unit is also used to receive the fault simulation information, and determine the fault analysis result data pre-mapped and stored with the fault simulation information based on the fault simulation information, and send the fault analysis result data to a remote host computer; wherein the fault analysis result data includes a wiring diagram, a vector diagram, a power expression, a correction coefficient, a refund power and simulation status information.

[0012] In an optional embodiment, the three-phase analog power supply generating unit includes a three-phase voltage generating unit and a three-phase current generating unit, and the multiple output terminals include a voltage output terminal and a current output terminal; the three-phase voltage generating unit is respectively connected to the analog control unit and each of the voltage output terminals, for receiving the voltage parameters corresponding to each of the voltage output terminals, and outputting a metering voltage to the voltage output terminals, wherein the metering voltage is the same as the voltage parameter corresponding to the voltage output terminal; the three-phase current generating unit is respectively connected to the analog control unit and each of the current output terminals, for receiving the current parameters corresponding to each of the current output terminals, and outputting a metering current to the current output terminals, wherein the metering current is the same as the current parameter corresponding to the current output terminals.

[0013] In an optional embodiment, the portable electric energy metering and analysis simulation device also includes a bus communication unit and a wireless communication unit; the first interactive end of the bus communication unit is connected to the first interactive end of the simulation control unit, and the second interactive end of the bus communication unit is used to connect to a remote host computer, so as to establish a bus communication connection between the simulation control unit and the host computer; the first interactive end of the wireless communication unit is connected to the second interactive end of the simulation control unit, so as to establish a wireless communication connection between the simulation control unit and the host computer.

[0014] In an optional embodiment, the analog control unit is also used to monitor the load value of each of the output terminals in real time, and determine whether the load value is greater than or equal to a preset load threshold. If the load value is greater than or equal to the load threshold, the three-phase analog power supply generating unit is controlled to stop outputting the metered electrical energy to each of the output terminals; the analog control unit is also used to monitor the metered current output by each of the current output terminals in real time, and when the current value of the metered current decreases from a non-zero value to a zero value, the three-phase analog power supply generating unit is controlled to stop outputting the metered electrical energy to each of the output terminals.

[0015] In an optional embodiment, each of the output terminals has a preset terminal number; the analog control unit stores error measurement mode information, wherein the error measurement mode information includes an error measurement terminal group consisting of multiple terminal numbers; the analog control unit is also configured to perform the following processing: the analog control unit determines in real time the output terminals connected to the external power measuring device, and determines the terminal number of each output terminal connected to the external power measuring device, and determines each of the terminal numbers as a reference number, wherein the external power measuring device includes a voltmeter, an ammeter and a multimeter; all of the reference numbers are compared with the terminal numbers in the error measurement terminal group, and when the number of the reference numbers is the same as the number of the terminal numbers in the error measurement terminal group, and each of the reference numbers is the same as one of the terminal numbers in the error measurement terminal group, the display screen is controlled to issue an error measurement prompt message.

[0016] In an optional embodiment, the portable electric energy metering and analysis simulation device has a hard shell, the three-phase simulated power generation unit and the simulation control unit are arranged in the hard shell, the display screen is arranged on the outer surface of the hard shell, and the output terminal extends out of the outer surface of the hard shell; the portable electric energy metering and analysis simulation device also includes at least one status indicator light, which is arranged on the outer surface of the hard shell; the simulation control unit is also connected to each of the status indicator lights, for controlling the flashing state of the status indicator light based on the display parameters corresponding to the fault simulation information.

[0017] In an optional embodiment, the portable electric energy metering and analysis simulation device also includes a power supply unit, which is respectively connected to the three-phase analog power supply generating unit, the display screen and the analog control unit, and is used to supply power to the three-phase analog power supply generating unit, the display screen and the analog control unit.

[0018] In an optional embodiment, the portable electric energy metering and analysis simulation device also includes a sound receiving unit; the sound receiving unit is used to receive sound information and send the sound information to the simulation control unit; the simulation control unit is also used to receive the sound information from the sound receiving unit, and convert the sound information into text information, and determine whether the text information is the same as the analysis result text information corresponding to the fault simulation information. If the text information is not the same as the analysis result text information, the display screen is controlled to issue an error response prompt message.

[0019] The portable electric energy metering analysis simulation device provided by the present invention can receive fault simulation information to determine the fault type of an electric energy metering device such as an electric energy meter to be simulated by the portable electric energy metering analysis simulation device, and determine the display parameters corresponding to the above fault type, and the voltage parameters and current parameters that each output terminal of the electric energy metering device should correspond to when the above fault type occurs; further, the voltage parameters and current parameters corresponding to each output terminal are sent to a three-phase simulation power generation unit, so that the three-phase simulation power generation unit outputs the metered electric energy to each output terminal according to the voltage parameters and current parameters corresponding to each output terminal, so that the metering voltage output by each output terminal is the same as the voltage parameter corresponding to the output terminal, and the metering current output by each output terminal is the same as the current parameter corresponding to the output terminal; at the same time, the display screen is controlled to display the display parameters, so that relevant personnel can collect the metering voltage and metering current of the output terminal, and combine the various display parameters displayed on the display screen to perform fault analysis on the simulated electric energy metering device, thereby completing the training work on fault analysis of the electric energy metering device. The technical solution provided by the present application does not require the provision of electrical equipment for outputting three-phase voltage and three-phase current. Instead, a portable electric energy metering analysis simulation device directly simulates an electric energy metering device with a specific fault, outputs the metered electric energy to each output terminal, and simulates the electric energy parameter values ​​collected by the electric energy metering device with a specific fault when collecting the above-mentioned three-phase voltage and three-phase current, and displays the electric energy parameter values ​​on a display screen as display parameters, thereby simplifying the hardware requirements for fault simulation of the electric energy metering device, thereby significantly improving the efficiency of fault simulation of the electric energy metering device.

[0020] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 One of the structural schematic diagrams of a portable electric energy metering analysis simulation device provided by an embodiment of the present invention is shown;

[0023] Figure 2 A second structural schematic diagram of a portable electric energy metering and analysis simulation device provided by an embodiment of the present invention is shown;

[0024] Figure 3 A third structural schematic diagram of a portable electric energy metering analysis simulation device provided by an embodiment of the present invention is shown;

[0025] Figure 4 A schematic diagram of the appearance of a portable electric energy metering and analysis simulation device provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0026] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0027] At present, the existing electric energy metering and analysis equipment includes electronic loads, voltage and current transformers, joint junction boxes, electric energy meters and other power equipment and electric energy metering devices. When the electric energy metering and analysis equipment is used to simulate the fault of the electric energy metering device, the above-mentioned power equipment sends three-phase voltage and three-phase current to the electric energy metering device. Further, the electric energy metering device is adjusted to put the electric energy metering device in a specific fault state, and the electric energy metering device in the specific fault state collects the three-phase voltage and three-phase current to obtain the metering voltage and metering current, and the display screen of the electric energy metering device displays the electric power parameter values ​​obtained by collecting the three-phase voltage and three-phase current, so that relevant personnel can collect the metering voltage and metering current at the wiring terminals of the electric energy metering and analysis equipment, and combine the various electric power parameter values ​​displayed on the display screen to perform fault analysis on the electric energy metering device that simulates the specific fault, and complete the training work on the fault analysis of the electric energy metering device. However, the power equipment required by current electric energy metering and analysis equipment is often integrated inside a cabinet, which makes the volume of the above cabinet too large. Before training and use, the power equipment needs to be assembled in a training room and power cables and communication cables need to be laid. At the same time, the electric energy metering and analysis equipment and the power equipment are not easy to move after installation, and the power equipment cannot be quickly transferred. As a result, a lot of effort needs to be spent on arranging the hardware environment before performing fault simulation on the electric energy metering device through the existing electric energy metering and analysis equipment, which seriously reduces the efficiency of fault simulation on the electric energy metering device.

[0028] In view of the above problems, in one embodiment, Figure 1As shown, a portable electric energy metering and analysis simulation device is provided, and the portable electric energy metering and analysis simulation device includes an analog control unit 100, a three-phase analog power generation unit 200, a display screen 300, and a plurality of output terminals 700; wherein the analog control unit 100 can be a computer device such as a single-chip microcomputer and a digital signal processor, and the display screen 300 can be a liquid crystal display (LCD) for information display, and further, the visible size of the display screen 300 can be 85mm (length) × 50mm (width) to provide a clear and accurate display effect. Further, the three-phase analog power generation unit 200 is used to controllably output a variety of metering voltages and metering currents for metering electric energy. Further, the plurality of output terminals 700 of the portable electric energy metering and analysis simulation device can constitute a terminal row, which is arranged at the bottom of the portable electric energy metering and analysis simulation device, and the terminal row is protected by a terminal protection cover.

[0029] Furthermore, the simulation control unit 100 is respectively connected to the display screen 300 and the three-phase simulation power supply generating unit 200, for obtaining fault simulation information, and determining the display parameters corresponding to the fault simulation information, the voltage parameters and current parameters corresponding to each of the output terminals 700 based on the fault simulation information, and sending the voltage parameters and current parameters corresponding to each of the output terminals 700 to the three-phase simulation power supply generating unit 200, and controlling the display screen 300 to display the display parameters, wherein the display parameters include metered current values, metered voltage values, active power and reactive power of the power equipment and other parameters, and the specific parameter types can be determined according to actual conditions.

[0030] Here, the fault simulation information includes fault information of the electric energy metering device, and each type of fault simulation information may include one or more types of fault information; wherein, the fault information involved in fault analysis includes fault information such as incorrect wiring and abnormal metering faults, and the specific types and quantities of fault information may be determined according to actual conditions; in the actual working process, the fault simulation information may be sent by the host computer to the simulation control unit 100, or a plurality of fault simulation information may be stored in a portable electric energy metering analysis simulation device, and relevant staff may operate the portable electric energy metering analysis simulation device to select the fault simulation information to be analyzed from the plurality of fault simulation information and send it to the simulation control unit 100.

[0031] Among them, each type of fault simulation information corresponds to a preset fault parameter, and the fault parameter includes a display parameter, a voltage parameter corresponding to each of the output terminals 700, and a current parameter corresponding to each of the output terminals 700; the fault simulation information and the fault parameter corresponding to the fault simulation information can be mapped and stored to determine the display parameter corresponding to the fault simulation information, the voltage parameter and the current parameter corresponding to each of the output terminals 700 through the fault simulation information.

[0032] Here, the fault recorded in the fault information in the fault simulation information of the electric energy metering device can be simulated through experiments or tests. Further, the three-phase voltage and three-phase current are collected by the faulty electric energy metering device, and the metered electric energy output by each output terminal 700 of the faulty electric energy metering device, as well as the electric power parameter values ​​obtained by collecting the three-phase voltage and three-phase current are recorded, wherein the metered electric energy includes the metered voltage and the metered current; further, for each output terminal 700, the voltage value of the metered electric energy output by the output terminal 700 is determined as the voltage parameter of the output terminal 700, the current value of the metered electric energy output by the output terminal 700 is determined as the current parameter of the output terminal 700, and the electric power parameter value is determined as the display parameter.

[0033] Furthermore, the three-phase analog power supply generating unit 200 is also connected to each of the output terminals 700, for receiving current parameters and voltage parameters corresponding to each of the output terminals 700, and outputting metered electrical energy to each of the output terminals 700, wherein the metered electrical energy includes metered voltage and metered current.

[0034] Specifically, after receiving the voltage parameter or current parameter corresponding to each output terminal 700, the three-phase simulated power generating unit 200 generates metered electrical energy for each output terminal 700, and outputs the metered electrical energy corresponding to the output terminal 700 to each output terminal 700, wherein the metered voltage output by the three-phase simulated power generating unit 200 to the output terminal 700 is the same as the voltage parameter corresponding to the output terminal 700, and the metered current output by the three-phase simulated power generating unit 200 to the output terminal 700 is the same as the current parameter corresponding to the output terminal 700, so that relevant personnel can measure the metered electrical energy of the output terminal 700 of the portable electric energy metering and analysis simulation device to determine the metered voltage and metered current of the metered electrical energy, and perform fault analysis on the simulated electric energy metering device in combination with the various display parameters displayed on the display screen, thereby completing the training on fault analysis of the electric energy metering device.

[0035] The portable electric energy metering analysis and simulation device provided in this embodiment does not need to set up electric power equipment for outputting three-phase voltage and three-phase current when performing fault simulation. Instead, the portable electric energy metering analysis and simulation device directly simulates the metering voltage and metering current output by each output terminal when the electric energy metering device with a specific fault collects the three-phase voltage and the three-phase current, and simulates the electric power parameter values ​​collected by the electric energy metering device with a specific fault when collecting the above-mentioned three-phase voltage and the three-phase current, and displays the electric power parameter values ​​as display parameters on the display screen, thereby simplifying the hardware requirements for fault simulation of the electric energy metering device, thereby significantly improving the efficiency of fault simulation of the electric energy metering device.

[0036] In an optional embodiment, if Figure 2 As shown, the simulation control unit 100 includes a data integration processing unit 110 and a metering device fault simulation control unit 120; wherein, the data integration processing unit 110 and the metering device fault simulation control unit 120 can be computer devices such as a single-chip microcomputer and a digital signal processor respectively, and the data integration processing unit 110 can serve as the central controller of a portable electric energy metering analysis simulation device.

[0037] Specifically, the data integration processing unit 110 is connected to the metering device fault simulation control unit 120, and is used to receive the fault simulation information and send the fault simulation information to the metering device fault simulation control unit 120. Here, the fault simulation information can be sent by the host computer to the data integration processing unit 110, or a plurality of fault simulation information can be stored in a portable electric energy metering analysis simulation device, and the portable electric energy metering analysis simulation device can be operated by relevant staff to select the fault simulation information to be analyzed from the plurality of fault simulation information and send it to the data integration processing unit 110.

[0038] Further, the metering device fault simulation control unit 120 is connected to the three-phase simulation power supply generating unit 200 and the display screen 300 respectively, and here, the data integration processing unit 110 can control the metering device fault simulation control unit 120 to complete the simulation of faults such as incorrect wiring and abnormal metering. Specifically, the data integration processing unit 110 sends fault simulation information to the metering device fault simulation control unit 120; after receiving the fault simulation information, the metering device fault simulation control unit 120 determines the fault information contained in the fault simulation information to determine the fault type of the electric energy meter to be simulated; further, based on the fault simulation information, the display parameters pre-mapped and stored with the fault simulation information, the voltage parameters or current parameters corresponding to each output terminal 700 are determined, and the voltage parameters or current parameters corresponding to each output terminal 700 are sent to the three-phase simulation power supply generating unit 200, and the display screen 300 is controlled to display the display parameters.

[0039] The embodiments provided in the present application can control the metering device fault simulation control unit through the data integration processing unit to complete the simulation of common faults of the electric energy metering device such as incorrect wiring and metering abnormalities, so that the metering device fault simulation control unit controls the three-phase simulation power supply generation unit to output a specific metering amount of electric energy to each output terminal, and displays specific power parameters on the display screen, thereby completing the fault simulation of the electric energy metering device with a specific fault, thereby improving the fault simulation capability of the portable electric energy metering analysis simulation device.

[0040] In an optional embodiment, the data integration processing unit is also used to receive the fault simulation information, and determine the fault analysis result data pre-mapped and stored with the fault simulation information based on the fault simulation information, and send the fault analysis result data to a remote host computer. Here, the host computer can be a computer terminal or mobile phone used by trainees or teachers who conduct fault analysis training; further, the fault analysis result data can be the fault analysis result of the fault information corresponding to the fault simulation information. As an example, if the fault information is a wiring error, the fault analysis result can be the wiring form of the electric energy metering device with the current wrong wiring and the corresponding correct wiring form, as well as the deviation between the measured value of the metering voltage and the metering current of the electric energy metering device under the wiring error and the measured value under the correct wiring condition. Further, the fault analysis result data can also include a wiring diagram, an accurate vector diagram, a detailed power expression, a correction coefficient, a refund amount, and simulation status information. The above fault analysis results are the correct analysis results that the trainees should obtain after performing fault analysis on electric energy metering devices such as electric energy meters.

[0041] The embodiments provided in the present application can obtain the fault analysis results that the trainees should obtain by performing fault analysis on the simulated electric energy metering device, and automatically draw clear and intuitive wiring diagrams, accurate vector diagrams, detailed power expressions and other information, providing important reference and theoretical basis for subsequent operations; at the same time, it is convenient for trainees to compare their own fault analysis results with the fault analysis results serving as the standard answer to know their own learning outcomes; at the same time, it can enable teachers to know the difference between the fault analysis results obtained by the trainees and the fault analysis results serving as the standard answer, and then determine the learning outcomes of the trainees, thereby improving the training effect of the portable electric energy metering analysis simulation device on the trainees.

[0042] In an optional embodiment, if Figure 3 As shown, the three-phase analog power supply generating unit 200 includes a three-phase voltage generating unit 210 and a three-phase current generating unit 220; here, the output terminal may include a voltage output terminal 710 and a current output terminal 720, the three-phase voltage generating unit 210 is connected to each voltage output terminal 710, and the three-phase current generating unit 220 is connected to each current output terminal 720; wherein, the three-phase voltage generating unit 210 is connected to a power supply unit (not shown in the figure), can generate three voltage waveforms through a waveform generator, and amplify the voltage waveforms through its internal power amplifier, and further amplify the voltage through its internal booster and current saver to obtain a metering voltage, and output the metering voltage to the voltage output terminal 710. Further, the three-phase current generating unit 220 is also connected to the power supply unit, can generate three current waveforms through a waveform generator, and amplify the current waveforms through its internal power amplifier, and further amplify the current through its internal booster and current saver to obtain a metering current, and output the metering current to the current output terminal 720.

[0043] Specifically, the three-phase voltage generating unit 210 is connected to the analog control unit 100 and each of the voltage output terminals 710, respectively, for receiving the voltage parameters corresponding to each of the voltage output terminals 710, and outputting the metering voltage recorded by the voltage parameters corresponding to the voltage output terminals 710 to the voltage output terminals 710. The voltage parameters record various parameters of the metering voltage to be output by the voltage output terminals 710, such as voltage amplitude, frequency, and phase; as an example, if the voltage parameter corresponding to a certain voltage output terminal 710 is an AC voltage of 220V, the three-phase voltage generating unit 210 outputs an AC voltage of 220V to the voltage output terminal 710 as the metering voltage.

[0044] Furthermore, the three-phase current generating unit 220 is respectively connected to the analog control unit 100 and each of the current output terminals 720, and is used to receive the current parameter corresponding to each of the current output terminals 720, and output the metering current recorded by the current parameter corresponding to the current output terminal 720 to the current output terminal 720. The current parameter records various parameters of the metering current to be output by the current output terminal 720, such as the current value, AC and DC parameters, etc.; as an example, if the current parameter corresponding to a current output terminal 720 is a DC current of 2A, the three-phase current generating unit 220 outputs a DC current of 2A to the current output terminal 720 as the metering current.

[0045] The embodiment provided by the present application can generate voltage and current by independent generating units respectively, and the three-phase current generating unit is only responsible for outputting current, so that the voltage on the current line is relatively small, which can play a role in preventing electric shock. In addition, the output power of the three-phase voltage generating unit is relatively small, about 2W, and even when the external circuit connected to the voltage output terminal is short-circuited or a person touches the voltage output terminal, the short-circuit current will not exceed 30mA, thereby preventing the occurrence of accidents of electric shock by physical means, and improving the safety of the portable electric energy metering analysis simulation device.

[0046] In an optional embodiment, if Figure 3 As shown, the portable electric energy metering and analysis simulation device also includes a bus communication unit 400 and a wireless communication unit 500; wherein the bus communication unit 400 can be an RS485 communication unit, the wireless communication unit 500 can be a WiFi communication unit, the bus communication unit 400 can be connected to the host computer via the RS485 bus, and the wireless communication unit 500 can establish a wireless communication connection with the host computer.

[0047] Furthermore, the first interactive end of the bus communication unit 400 is connected to the first interactive end of the simulation control unit 100, and the second interactive end of the bus communication unit 400 is used to connect to a remote host computer (not shown in the figure), and is used to establish a bus communication connection between the simulation control unit 100 and the host computer. Here, the outer surface of the portable power metering and analysis simulation device can be provided with the A end and the B end of the 485Ⅰ communication interface, and the A end and the B end of the 485Ⅱ communication interface, which are responsible for the wired communication between the portable power metering and analysis simulation device and the external software in the host computer, so as to realize efficient data transmission and interaction.

[0048] Furthermore, the first interactive end of the wireless communication unit 500 is connected to the second interactive end of the simulation control unit 100, and is used to establish a wireless communication connection between the simulation control unit 100 and the host computer. The embodiment provided by the present application can communicate with the host computer through bus data communication or wireless communication, so that relevant personnel can set the portable power metering and analysis simulation device through the simulation control software system at the host computer, and control the working state of the portable power metering and analysis simulation device, thereby improving the operability of the portable power metering and analysis simulation device.

[0049] In an optional embodiment, the analog control unit is also used to monitor the load value of each output terminal in real time, and determine whether the load value is greater than or equal to a preset load threshold. If the load value is greater than or equal to the load threshold, the three-phase analog power generation unit is controlled to stop outputting the metered electric energy to each output terminal, so as to provide protection when a short circuit fault occurs in the external voltage circuit connected to the output terminal, and a fault prompt sound can be emitted through a speaker arranged at the device. The load threshold is a criterion for determining whether the load of the output terminal is too large, and its value can be determined according to actual conditions.

[0050] Specifically, the simulation control unit can determine the output power of the output terminal through a sensor disposed at the output terminal, and determine the load value of the output terminal based on the output power of the output terminal. Here, when a person touches the output terminal or a short circuit occurs in the voltage output terminal loop, the load of the output terminal will increase abnormally. Based on this, by determining whether the load value of the output terminal is greater than or equal to the load threshold, when the load value of a certain output terminal is greater than or equal to the load threshold, the three-phase simulation power generation unit is controlled to stop outputting metered electrical energy to each output terminal to protect the safety of people and the device.

[0051] Furthermore, the analog control unit is also used to monitor the metering current output by each of the current output terminals in real time, and to determine whether the current value of the metering current drops from a non-zero value to a zero value, that is, to determine whether the metering current output by the current output terminal drops to zero. If the current value of the metering current drops from a non-zero value to zero, the three-phase analog power supply generating unit is controlled to stop outputting the metering electrical energy to each of the output terminals, so as to provide protection when an open circuit fault occurs in the external circuit connected to the current output terminal.

[0052] Specifically, the analog control unit can determine the metering current output by the current output terminal through a sensor arranged at the current output terminal. When the current value of the metering current output by a certain current output terminal drops from a certain value to zero, the three-phase analog power generation unit is controlled to stop outputting metering electric energy to each output terminal, and a fault prompt sound can be issued through a speaker arranged at the device to protect the safety of the device when an open circuit fault occurs in the current loop.

[0053] The embodiments provided in the present application have the functions of voltage short circuit, current open circuit monitoring and personnel touch monitoring. When a voltage circuit short circuit or a current circuit open circuit occurs in the external circuit connected to the device, or when a person touches the output terminal, the power output can be cut off in time to ensure the safety of personnel and the device, thereby improving the safety of the portable power metering and analysis simulation device.

[0054] In an optional embodiment, each of the output terminals has a preset terminal number, and here, the terminal number of each output terminal can be stored in the simulation control unit; further, the terminal number of the output terminal can be engraved at the output terminal; further, the simulation control unit stores error measurement mode information, wherein the error measurement mode information includes an error measurement terminal group consisting of multiple terminal numbers; here, the number of error measurement mode information can be multiple, and each error measurement mode information is used to record a wiring error when measuring a portable electric energy metering analysis simulation device, including when using an external electric power measuring device such as a voltmeter and an ammeter to measure the metered electric energy of the portable electric energy metering analysis simulation device, the measurement probe of the external electric power measuring device is connected to the wrong output terminal. In addition, each error measurement mode information can also record an error connection mode between an external circuit and the portable electric energy metering analysis simulation device. Further, the error measurement terminal group of the error measurement mode information can be stored locally in the form of a list, and the list includes multiple terminal numbers for indicating a wiring error.

[0055] Furthermore, the simulation control unit is further configured to perform the following processing:

[0056] First, the simulation control unit determines in real time the output wiring terminal connected to the external power measuring device, determines the terminal number of each output wiring terminal connected to the external power measuring device, and determines each of the terminal numbers as a comparison number.

[0057] Specifically, the analog control unit can determine whether the output terminal has electrical energy output through a current sensor or a voltage sensor disposed at the output terminal, so as to determine whether the output terminal is connected to an external circuit or a measuring device. In addition, the analog control unit can also collect the pressure exerted on the output terminal through a pressure sensor disposed at the output terminal, so as to determine whether the output terminal is connected to an external circuit or a measuring device. Furthermore, after determining that the output terminal is connected to an external power measuring device, the analog control unit determines the terminal number of the output terminal connected to the external power measuring device as the reference number.

[0058] Then, all the reference numbers are compared with the erroneous measurement terminal group. When the number of the reference numbers is the same as the number of terminal numbers in the erroneous measurement terminal group, and each of the reference numbers is the same as one of the terminal numbers in the erroneous measurement terminal group, the display screen is controlled to issue an erroneous measurement prompt message.

[0059] Here, the reference number can be compared with the error measurement terminal group in each error measurement mode information. Specifically, the number of terminal numbers contained in each error measurement terminal group can be determined first, and it can be determined whether the number of numbers of each error measurement terminal group is the same as the number of all reference numbers. If the number of numbers of the error measurement terminal group is the same as the number of reference numbers, the error measurement terminal group is determined as the target error measurement terminal group; further, it is determined whether the reference number corresponds to the terminal number in the target error measurement terminal group one by one. If the reference number corresponds to the terminal number in a certain target error measurement terminal group one by one, the control display screen issues an error measurement prompt message.

[0060] Furthermore, each type of erroneous measurement mode information corresponds to an erroneous wiring information and correct wiring information corresponding to the erroneous wiring information. When the analog control unit determines that the number of comparison numbers is the same as the number of terminal numbers in an erroneous measurement terminal group, and each comparison number is the same as a terminal number in the erroneous measurement terminal group, the erroneous wiring information of the erroneous measurement mode information corresponding to the erroneous measurement terminal group and the correct wiring information are displayed on the display screen, so that the operator can know that there is an error in his current wiring and determine the relatively correct wiring method.

[0061] The embodiment provided in the present application can identify wiring errors made by the current trainee when performing fault analysis on a portable power metering and analysis simulation device, and send error information to the trainee so that the trainee can know the current wiring errors in a timely manner, thereby improving the functionality of the portable power metering and analysis simulation device.

[0062] In an optional embodiment, if Figure 4As shown, the portable electric energy metering and analysis simulation device has a hard shell 600, which is the same as the shell of a standard three-phase smart electric energy meter, and has an outer size of 290mm (height) × 170mm (width) × 85mm (thickness), which is both practical and in line with industry standards. Furthermore, two buttons N can be set on the hard shell 600, and the two buttons N are arranged up and down, respectively responsible for page up and page down operations, so that users can switch pages and browse information conveniently.

[0063] Further, the three-phase simulated power generation unit (not shown in the figure) and the simulated control unit (not shown in the figure) are arranged in the hard shell 600, the display screen 300 is arranged on the outer surface of the hard shell 600, and a protective glass plate can be arranged on the display screen 300 to protect the display screen 300; the output terminal 700 extends out of the outer surface of the hard shell 600, and each output terminal 700 is protected by a terminal protection cover. Here, the portable electric energy metering and analysis simulation device can be provided with a current loop short-circuit wire, and the current loop short-circuit wire is short-circuited at the high end and the low end of the three-phase current respectively to ensure that the current loop is conductive. Further, the portable electric energy metering and analysis simulation device also includes at least one status indicator light L, and the status indicator light L is arranged on the outer surface of the hard shell 600, wherein the status indicator light L can include an active pulse light, a reactive pulse light, and a trip indicator light to intuitively reflect the working state of the portable electric energy metering and analysis simulation device.

[0064] Furthermore, the simulation control unit is also connected to each of the status indicator lights L, and is used to control the flashing state of the status indicator lights L based on the display parameters corresponding to the fault simulation information. Specifically, the simulation control unit can determine the flashing form of the status indicator lights L by calculating the display parameters; as an example, the simulation control unit can determine the flashing frequency of the active pulse light according to the size of the active power parameter in the display parameters to control the active pulse light to flash. Furthermore, the simulation control unit can also determine the flashing form of the status indicator lights L according to the metering voltage and metering current output by the current output terminal, so as to simulate the flashing state of the status indicator lights L when the fault phenomenon corresponding to the fault simulation information occurs in the real electric energy meter or other electric energy metering device, so that the trainees can analyze the fault of the electric energy metering device currently simulated by the portable electric energy metering analysis simulation device through the flashing state of the status indicator lights L, the information displayed on the display screen, and the data measured by the trainees.

[0065] The embodiments provided in the present application can make the portable electric energy metering and analysis simulation device have the same appearance as the current three-phase smart electric energy meter, and simulate the flashing state of the indicator light of the electric energy metering device when a corresponding fault occurs, so as to better simulate the electric energy metering device with a specific fault, thereby improving the use effect of the portable electric energy metering and analysis simulation device.

[0066] In an optional embodiment, the portable power metering and analysis simulation device further includes a power supply unit, which can be connected to an external power source to supply power to each electrical device in the portable power metering and analysis simulation device, and the power supply unit can also be provided with a battery to supply power to each electrical device in the portable power metering and analysis simulation device through the battery. Specifically, the power supply unit can be powered by a power adapter with a DC 12V voltage and a 4A current to ensure the stable operation of the portable power metering and analysis simulation device.

[0067] Specifically, the power supply unit is connected to the three-phase analog power generation unit, the display screen and the analog control unit respectively, and is used to supply power to the three-phase analog power generation unit, the display screen and the analog control unit. The embodiment provided by the present application can supply power to each electrical device in the portable power metering and analysis simulation device through the power supply unit, thereby ensuring the power supply stability of the portable power metering and analysis simulation device.

[0068] In an optional embodiment, the portable electric energy metering and analysis simulation device further includes a sound receiving unit, wherein the sound receiving unit may be a microphone, and the sound receiving unit may be disposed on the outer surface of the hard shell and connected to the simulation control unit via a wire.

[0069] Furthermore, the sound receiving unit is used to receive sound information and send the sound information to the simulation control unit. Here, the outer surface of the hard shell can be provided with a sound receiving button, and the sound receiving button is connected to the simulation control unit. When the simulation control unit recognizes that the sound receiving button is pressed, the sound receiving unit can be controlled to be in a working state to receive sound information. In actual use, the trainee can press the sound receiving button and speak the analysis result of the fault analysis, so that the simulation control unit can collect the sound information containing the analysis result.

[0070] Furthermore, the simulation control unit is also used to receive the sound information from the sound receiving unit and convert the sound information into text information. Specifically, a speech recognition program can be pre-installed in the simulation control unit to receive the sound information and recognize the analysis result in the sound information to obtain text information corresponding to the analysis result.

[0071] Further, it is determined whether the text information is the same as the analysis result text information corresponding to the fault simulation information, and if the text information is not the same as the analysis result text information, the display screen is controlled to issue an error reply prompt message. The analysis result text information is a standard analysis answer to the fault analysis of the simulated electric energy metering device, and each fault simulation information corresponds to a preset analysis result text information.

[0072] Specifically, the text information can be segmented to obtain multiple text words; here, the text information can be segmented based on an open source segmentation model to obtain multiple text words after segmentation. Wherein, the entity word list related to the power system field is pre-imported into the segmentation model so that the text words obtained by segmentation have a high similarity with the power system field. Further, the word vector of each text word is calculated, and the word vector of each text word in the text information is added and averaged to obtain the sentence vector of the text information. Further, the sentence vector of the analysis result text information corresponding to the fault simulation information is determined, and the cosine similarity between the sentence vector of the text information and the sentence vector of the analysis result text information is calculated; further, it is determined whether the cosine similarity is greater than or equal to a preset similarity threshold. If the cosine similarity is greater than or equal to the preset similarity threshold, it is determined that the text information is the same as the analysis result text information; conversely, if the cosine similarity is less than the preset similarity threshold, it is determined that the text information is not the same as the analysis result text information; wherein, the value of the similarity threshold can be determined according to actual conditions.

[0073] The embodiment provided in the present application can receive the analysis results of the trainees, determine whether the analysis results are the same as the preset correct analysis results, determine whether the fault analysis results of the simulated electric energy metering device by the trainees are correct, and improve the functionality of the portable electric energy metering analysis simulation device.

[0074] The portable electric energy metering and analysis simulation device provided in this embodiment is small in size, low in cost, easy to carry and store, and has short-circuit protection and electric shock protection functions, which greatly improves the safety during use. At the same time, it can judge the fault analysis results of the trainees, determine whether their analysis results are correct, and feed back the correct fault analysis results to the trainees, which can provide a good practical operating environment for the trainees, allowing the trainees to complete the incorrect wiring inspection of the electric energy metering device and the analysis of other related faults according to the requirements of the task book, allowing more people to better master the relevant professional knowledge and promote the popularization and application of electric power knowledge.

[0075] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0076] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A portable electric energy metering and analysis simulation device, characterized in that: The portable electric energy metering and analysis simulation device comprises a simulation control unit, a three-phase simulation power supply generating unit, a display screen and a plurality of output terminals; The simulation control unit is connected to the display screen and the three-phase simulation power generation unit respectively, and is used to obtain fault simulation information, and determine the display parameters corresponding to the fault simulation information, the voltage parameters and current parameters corresponding to each of the output terminals based on the fault simulation information, and send the voltage parameters and current parameters corresponding to each of the output terminals to the three-phase simulation power generation unit, and control the display screen to display the display parameters; The three-phase simulated power generation unit is also connected to each of the output terminals, and is used to receive the voltage parameter and current parameter corresponding to each of the output terminals, and output the metered electric energy to each of the output terminals, wherein the metered electric energy includes the metered voltage and the metered current; Among them, the metering voltage output by the three-phase analog power generation unit to the output terminal is the same as the voltage parameter corresponding to the output terminal, and the metering current is the same as the current parameter corresponding to the output terminal.

2. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The simulation control unit includes a data integration processing unit and a metering device fault simulation control unit; The data integration processing unit is connected to the metering device fault simulation control unit, and is used to receive the fault simulation information and send the fault simulation information to the metering device fault simulation control unit; The metering device fault simulation control unit is respectively connected to the three-phase simulation power supply generating unit and the display screen, and is used to receive the fault simulation information, and determine the display parameters pre-mapped and stored with the fault simulation information, the voltage parameters and current parameters corresponding to each of the output terminals based on the fault simulation information, and send the voltage parameters and current parameters corresponding to each of the output terminals to the three-phase simulation power supply generating unit, and control the display screen to display the display parameters.

3. The portable electric energy metering and analysis simulation device according to claim 2, characterized in that: The data integration processing unit is also used to receive the fault simulation information, determine the fault analysis result data pre-mapped and stored with the fault simulation information based on the fault simulation information, and send the fault analysis result data to a remote host computer; The fault analysis result data includes wiring diagram, vector diagram, power expression, correction coefficient, power withdrawal and simulation status information.

4. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The three-phase analog power generation unit includes a three-phase voltage generation unit and a three-phase current generation unit, and the multiple output terminals include a voltage output terminal and a current output terminal; The three-phase voltage generating unit is respectively connected to the analog control unit and each of the voltage output wiring terminals, and is used to receive the voltage parameter corresponding to each of the voltage output wiring terminals, and output the metering voltage to the voltage output wiring terminals, wherein the metering voltage is the same as the voltage parameter corresponding to the voltage output wiring terminal; The three-phase current generating unit is respectively connected to the analog control unit and each of the current output terminals, and is used to receive current parameters corresponding to each of the current output terminals, and output a metering current to the current output terminals, wherein the metering current is the same as the current parameter corresponding to the current output terminals.

5. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The portable electric energy metering analysis simulation device also includes a bus communication unit and a wireless communication unit; The first interactive end of the bus communication unit is connected to the first interactive end of the simulation control unit, and the second interactive end of the bus communication unit is used to connect to a remote host computer to establish a bus communication connection between the simulation control unit and the host computer; The first interactive end of the wireless communication unit is connected to the second interactive end of the simulation control unit, and is used to establish a wireless communication connection between the simulation control unit and the host computer.

6. The portable electric energy metering and analysis simulation device according to claim 4, characterized in that: The simulation control unit is also used to monitor the load value of each of the output terminals in real time, and determine whether the load value is greater than or equal to a preset load threshold value. If the load value is greater than or equal to the load threshold value, the three-phase simulation power generation unit is controlled to stop outputting the metered electric energy to each of the output terminals; The analog control unit is also used to monitor the metered current output by each of the current output terminals in real time, and when the current value of the metered current decreases from a non-zero value to a zero value, control the three-phase analog power supply generating unit to stop outputting the metered electrical energy to each of the output terminals.

7. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: Each of the output wiring terminals has a preset terminal number; the simulation control unit stores error measurement mode information, wherein the error measurement mode information includes an error measurement terminal group consisting of a plurality of terminal numbers; The simulation control unit is further configured to perform the following processing: The simulation control unit determines in real time the output wiring terminal connected to the external power measuring device, determines the terminal number of each output wiring terminal connected to the external power measuring device, and determines each of the terminal numbers as a reference number, wherein the external power measuring device includes a voltmeter, an ammeter, and a multimeter; All of the reference numbers are compared with the terminal numbers in the erroneous measurement terminal group. When the number of the reference numbers is the same as the number of the terminal numbers in the erroneous measurement terminal group, and each of the reference numbers is the same as one of the terminal numbers in the erroneous measurement terminal group, the display screen is controlled to issue an erroneous measurement prompt message.

8. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The portable electric energy metering and analysis simulation device has a hard shell, the three-phase simulated power generation unit and the simulated control unit are arranged in the hard shell, the display screen is arranged on the outer surface of the hard shell, and the output terminal extends out of the outer surface of the hard shell; The portable electric energy metering and analysis simulation device further comprises at least one status indicator light, and the status indicator light is arranged on the outer surface of the hard shell; The simulation control unit is also connected to each of the status indicator lights, and is used to control the flashing state of the status indicator lights based on the display parameters corresponding to the fault simulation information.

9. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The portable electric energy metering and analysis simulation device also includes a power supply unit, which is respectively connected to the three-phase analog power supply generating unit, the display screen and the analog control unit, and is used to supply power to the three-phase analog power supply generating unit, the display screen and the analog control unit.

10. The portable electric energy metering and analysis simulation device according to claim 1, characterized in that: The portable electric energy metering and analysis simulation device also includes a sound receiving unit; The sound receiving unit is used to receive sound information and send the sound information to the simulation control unit; The simulation control unit is also used to receive the sound information from the sound receiving unit, convert the sound information into text information, and determine whether the text information is the same as the analysis result text information corresponding to the fault simulation information; if the text information is not the same as the analysis result text information, control the display screen to issue an error response prompt message.

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