CN213935355U - Metering simulation training device - Google Patents
Metering simulation training device Download PDFInfo
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- CN213935355U CN213935355U CN202023020682.2U CN202023020682U CN213935355U CN 213935355 U CN213935355 U CN 213935355U CN 202023020682 U CN202023020682 U CN 202023020682U CN 213935355 U CN213935355 U CN 213935355U
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Abstract
The utility model relates to the field of metering simulation training, and discloses a metering simulation training device, which comprises an upper computer, a total power unit, a function switching unit and an operation display panel, wherein, a special simulation electric energy meter and a simulation detection tool are adopted, and corresponding devices such as a high-precision total power unit and the like are arranged, within the range of human body safety voltage (AC 36V), the electric energy meter and the detection tool can display electric parameters such as current, voltage and the like corresponding to the actual field, thereby avoiding the conditions of equipment damage and casualties caused by personnel operation factors, achieving the purposes of training related requirements and absolutely safe operation, moreover, the utility model adopts the modularized design as a whole, reduces the complexity of wiring, improves the stability of the device, reliability, reduced failure rate and maintenance work, improved operability of the device, and optimized overall layout of the device site.
Description
Technical Field
The utility model relates to a measurement emulation training field, concretely relates to measurement emulation training device.
Background
In the modern society, electric power plays a considerable role in national production and life and has direct influence on national economy. While the production and use of large volumes of electricity are simultaneous and not intermittent. A tool for accurately measuring the amount of electrical energy between production and use is required. It includes the main components of current transformer, voltage transformer and electric energy meter, and these components also need to be mounted in fixed place and correctly connected together. The metering simulation training device is a training system developed for enabling more professionals who engage in electric power meter wiring, meter reading and troubleshooting and metering faults to be familiar with and master the requirements of installation training of electric energy metering equipment and accident analysis and handling.
A. According to the requirements of relevant national and industrial regulations and specifications, secondary voltages of metering equipment such as an electric energy meter, a concentrator and a terminal adopted by the device are alternating current voltage levels of 57.7V, 100V, 220V and 380V, secondary currents are current ranges of 1A and 5A, and the voltage and current levels are such that potential safety hazards are easy to appear on trained personnel under the conditions that professional knowledge is not sufficient to be firm and field experience and service level are not sufficient to be skilled in most of training and learning personnel, so that equipment is damaged and personnel are injured and killed.
B. The general structural design of the present simulation training device is an integrated self-contained design, and the main components in the device include but are not limited to a total power unit, a function switching relay/(PLC) unit, an electrical parameter (current, voltage) detection and feedback unit, a load unit, a communication unit and the like. The components are connected in various hard wiring and communication line modes, and have the advantages of various complex wiring, high failure rate, large and complex maintenance amount, low device integration level, low operability and poor expandability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a measurement emulation training set, the device adopts simulation equipment, can let participate in training and examination personnel experience and the same actual conditions in scene in human safe voltage (AC 36V) within range, just the utility model discloses wholly adopt the modularized design, reduced the loaded down with trivial details of wiring, improve device stability, reliability, optimized the on-the-spot overall arrangement of device.
The purpose of the utility model is realized through the following technical scheme:
a metering simulation training device comprises an upper computer, a total power unit, a function switching unit and an operation display panel, wherein the upper computer, the total power unit, the function switching unit and the operation display panel are communicated through a communication module, and the communication module is realized by adopting a communication bus;
the upper computer consists of a display and a host and is used for setting and switching operation interfaces of different types of simulation devices, selecting corresponding stations and setting corresponding simulation parameters; the total power unit consists of an integrated shared extensible power source unit and is used for providing stable single-phase current and voltage; the function switching unit consists of a voltage conversion module, a current conversion module and a function switching module for setting a simulation fault; the operation display panel consists of a simulation electric energy meter and a simulation detection tool;
the input end of the total power unit is connected with an upper computer; the current conversion module is connected with the total power unit through a current output port A and a current input port B, is connected with the function switching module, outputs a three-phase four-wire current Ia, Ib and Ic within the human body safety current range, and provides the three-phase four-wire current Ia, Ib and Ic for the function switching module;
the voltage conversion module is connected with the total power unit through a voltage output port L and a voltage input port N, is connected with the function switching module, outputs three-phase four-wire voltages Ua, Ub and Uc within a human body safety voltage range and provides the three-phase four-wire voltages Ua, Ub and Uc for the function switching module;
the output end of the function switching module is connected with the simulation electric energy meter; the simulation detection tool is a phase volt-ampere meter and is used for detecting the simulation electric energy meter.
The phase volt-ampere meter comprises a three-phase voltage sampling circuit, a three-phase current sampling circuit, a voltage signal processing circuit, a current signal processing circuit, an analog-to-digital conversion unit and a control unit a;
the three-phase voltage sampling circuit is connected with the voltage signal processing circuit and then is connected to the analog-to-digital conversion unit;
the three-phase current sampling circuit is connected with the current signal processing circuit and then is connected to the analog-to-digital conversion unit;
the analog-to-digital conversion unit is connected with the control unit a;
the control unit a is connected with a 485 communication unit a, a data storage unit a, an LCD display unit and a key input unit a;
the phase volt-ampere meter of the utility model can obtain the effective values of current and voltage, and can obtain the phase and harmonic frequency after Fourier transformation, and the effective values of current and voltage are used for displaying after being multiplied by corresponding multiplying power, and the displayed numerical value is consistent with that of the simulation electric energy meter;
the simulation electric energy meter comprises a three-phase metering chip and a control unit b;
the three-phase metering chip ADE7878 is connected with the control unit b;
the control unit b is connected with an infrared communication unit, a 485 communication unit b, a data storage unit b, a pulse output unit, an alarm unit, an LED display unit, a key input unit b and a clock unit and is provided with a multifunctional port;
the simulation electric energy meter transmits the relevant electric parameters to the control unit b for processing, and then the simulation electric energy meter multiplies the corresponding multiplying power to be used for displaying by the LED display unit, and the displayed numerical value is consistent with the displayed numerical value of the actual electric energy meter.
The utility model has the advantages that:
1) the utility model discloses a special dedicated emulation electric energy meter of system-specific and detection instrument to be equipped with equipment such as corresponding high accuracy total power unit, all demonstrate electric parameters such as electric current, voltage that correspond with the actual scene on electric energy meter and detection instrument, but the voltage that real emulation equipment takes is in human safe voltage (AC 36V) within range, let participate in training and examination personnel experience the same actual conditions with the scene, the equipment damage and the casualties condition that have avoidd personnel's operational factor and bring, reach the purpose that the relevant requirement of training and operation are absolutely safe;
2) the utility model discloses wholly adopt the modularized design, reduced the loaded down with trivial details of wiring, improve device stability, the reliability reduces fault rate and maintenance work, has improved the operability of device, has optimized the on-the-spot overall arrangement of device.
Drawings
Fig. 1 is a system block diagram of the present invention.
Fig. 2 is a flow chart of the device structure and electrical connection according to the present invention.
Fig. 3 is a power conversion connection diagram of the present invention.
Fig. 4 is a block diagram of the simulation testing tool of the present invention.
Fig. 5 is a block diagram of the structure of the simulation electric energy meter of the present invention.
Detailed Description
As shown in fig. 1 and fig. 2, a metering error wiring simulation training device comprises an upper computer, a total power unit, a function switching unit and an operation display panel;
the upper computer, the total power unit, the function switching unit and the operation display panel are communicated through a communication module, and the communication module is realized by adopting a communication bus;
the upper computer consists of a display and a host and is used for setting and switching operation interfaces of different types of simulation devices, selecting corresponding stations and setting corresponding simulation parameters; the total power unit consists of an integrated shared extensible power source unit and is used for providing stable single-phase current and voltage, and the total power output by the total power unit is fed back and regulated at any time according to the number of selected stations and the size of a load; the function switching unit consists of a voltage conversion module, a current conversion module and a function switching module for setting a simulation fault; the operation display panel consists of a simulation electric energy meter and a simulation detection tool;
the input end of the total power unit is connected with an upper computer; the current conversion module is connected with the total power unit through a current output port A and a current input port B, is connected with the function switching module, outputs a three-phase four-wire current Ia, Ib and Ic within the human body safety current range, and provides the three-phase four-wire current Ia, Ib and Ic for the function switching module;
the voltage conversion module is connected with the total power unit through a voltage output port L and a voltage input port N, is connected with the function switching module, outputs three-phase four-wire voltages Ua, Ub and Uc within a human body safety voltage range and provides the three-phase four-wire voltages Ua, Ub and Uc for the function switching module;
the output end of the function switching module is connected with the simulation electric energy meter; the simulation detection tool is a phase volt-ampere meter and is used for detecting the simulation electric energy meter.
The phase volt-ampere meter comprises a three-phase voltage sampling circuit, a three-phase current sampling circuit, a voltage signal processing circuit, a current signal processing circuit, an analog-to-digital conversion unit ADS8556 and a control unit a STM32F 429;
the three-phase voltage sampling circuit is connected with the voltage signal processing circuit and then is connected to an analog-digital conversion unit ADS 8556;
the three-phase current sampling circuit is connected with the current signal processing circuit and then is connected to an analog-digital conversion unit ADS 8556;
the analog-to-digital conversion unit ADS8556 is connected with the control unit a STM32F 429;
the control unit a STM32F429 is connected with a 485 communication unit a, a data storage unit a, an LCD display unit and a key input unit a;
the simulation detection tool can obtain effective values of current and voltage, phase and harmonic times and the like can be obtained after Fourier transformation, the effective values of the current and the voltage are multiplied by corresponding multiplying power for display, and the display numerical values are consistent with those of the simulation electric energy meter;
the simulation electric energy meter comprises a three-phase metering chip ADE7878 and a control unit b STM32F 103;
the three-phase metering chip ADE7878 is connected with the control unit b STM32F 103;
the control unit b STM32F103 is connected with an infrared communication unit, a 485 communication unit b, a data storage unit b, a pulse output unit, an alarm unit, an LED display unit, a key input unit b and a clock unit;
the control unit b is also provided with a multifunctional port for testing the clock unit;
the simulation electric energy meter transmits the relevant electric parameters to the control unit b STM32F103 for processing, and then the simulation electric energy meter multiplies the corresponding multiplying power for displaying by the LED display unit, and the displayed numerical value is consistent with the displayed numerical value of the actual electric energy meter.
As shown in fig. 3, the function switching unit includes n switching units, and the specific power conversion process is as follows:
when only one work station is selected to operate, for example, x (an integer greater than or equal to 1) work stations are selected. x = 1: the relay corresponding to the switching unit I is K11 kept unchanged in a normal state, K12 is closed after action, K13 is closed after action, and all relays of other switching units are kept unchanged in a normal state. The current loop path is as follows: assuming that the current is positive at a certain time, the current flows out from the current output port a of the total power unit, passes through the normally closed contact of K11 to CT1, and then passes through K12 to return to the current input port B of the total power unit, so that the current loop is closed. When x > 1: the relay corresponding to the switching unit x is Kx1 kept constant in normal state, Kx2 is closed after action, Kx3 is closed after action, the switching unit Kx1 smaller than x acts, and all relays of other switching units are kept constant in normal state and do not act. The current loop path is as follows: assuming that the current is positive at a certain moment, the current flows out from the current output port A of the total power unit, passes through the normally open contact after the action of K11 to K (x-1)1, reaches the normally closed contact of Kx1 to CTx, and then returns to the current input port B of the total power unit through the normally open contact after the action of Kx2, so that the current loop is closed. When the current passes through the primary side of the current transformer CT, a required proper current value can be obtained at the secondary side, and the current is processed by the subsequent function switching module and then is sent to the simulation unit correspondingly selected.
When two or more stations are selected, for example, x and y stations (x < y) are selected, Kx1 and Ky1 corresponding to the x and y stations are not actuated, the other Kx1 smaller than y are actuated, and Kx2, Kx3, Ky2 and Ky3 corresponding to the x and y stations are closed. The current loop path is as follows: assuming that the current is positive at a certain moment, the current flows out from the current output port A of the total power unit, passes through the normally open contact after the action of K11 to K (x-1)1, reaches the normally closed contact of Kx1, passes through the normally open contact after the action of K (x +1)1 to K (y-1)1, reaches the normally closed contact of Ky1, passes through the normally open contact after the action of Ky2, and returns to the current input port B of the total power unit, so that the current loop is closed.
And the voltage loop is closed through the voltage output end of the total power unit, and Kx3 (Ky 3) of the selected x and y stations and the like are closed, so that a voltage is generated at the primary side of the corresponding voltage transformer PTx (PTy), and meanwhile, a required proper voltage value can be obtained at the secondary side of the PTx (PTy), and the voltage value is processed by a subsequent function switching module and then is sent to the corresponding selected simulation unit.
All the change-over switches are realized by automatically controlling and switching corresponding relays through the setting on computer software.
As shown in fig. 4 and fig. 5, an implementation of the simulation electric energy meter and the simulation detection tool:
simulating the electric energy meter: the input single-phase voltage is 22V, the input single-phase current is 25mA, after the acquisition and the operation of a three-phase metering chip ADE7878, relevant electric parameters are transmitted to a control unit b STM32F103 for processing, and then the relevant electric parameters are multiplied by corresponding multiplying power for display of an LED display unit, and the display value of the LED display unit is consistent with the display value of an actual electric energy meter;
simulation test tool (phase voltammeter): after three-phase voltage and current sampling filtering and analog-to-digital conversion unit ADS8556 conversion, data are transmitted to a main control unit a STM32F429, effective values of current and voltage can be obtained after data processing, phase and harmonic times and the like can be obtained after Fourier transformation, the effective values of current and voltage are multiplied by corresponding multiplying power for display, and the display numerical values are consistent with the display of the simulation electric energy meter.
Claims (6)
1. A metering simulation training device is characterized by comprising an upper computer, a total power unit, a function switching unit and an operation display panel;
the function switching unit consists of a voltage conversion module, a current conversion module and a function switching module for setting a simulation fault; the operation display panel consists of a simulation electric energy meter and a simulation detection tool;
the input end of the total power unit is connected with the upper computer, and the output end of the total power unit is respectively connected with the voltage conversion module and the current conversion module;
the output end of the voltage conversion module and the output end of the current conversion module are respectively connected with the function switching module, and the output end of the function switching module is connected with the simulation electric energy meter;
the simulation detection tool is used for detecting the simulation electric energy meter.
2. The metrological simulation training apparatus as claimed in claim 1, wherein the upper computer, the total power unit, the function switching unit and the operation display panel are communicated with each other through a communication module.
3. The metrological simulation training apparatus of claim 2, wherein the simulation detection means is a phase voltammeter.
4. The metering simulation training device as claimed in claim 3, wherein the phase volt-ampere meter comprises a three-phase voltage sampling circuit, a three-phase current sampling circuit, a voltage signal processing circuit, a current signal processing circuit, an analog-to-digital conversion unit and a control unit a;
the three-phase voltage sampling circuit is connected with the voltage signal processing circuit, and the three-phase current sampling circuit is connected with the current signal processing circuit;
the three output interfaces of the voltage signal processing circuit and the three output interfaces of the current signal processing circuit are respectively connected with an analog-to-digital conversion unit;
the output end of the analog-to-digital conversion unit is connected with the control unit a;
the control unit a is connected with a 485 communication unit a, a data storage unit a, an LCD display unit and a key input unit a.
5. The metering simulation training device as claimed in claim 4, wherein the simulation electric energy meter comprises a three-phase metering chip and a control unit b;
the output end of the three-phase metering chip is connected with the control unit b;
the control unit b is connected with an infrared communication unit, a 485 communication unit b, a data storage unit b, a pulse output unit, an alarm unit, an LED display unit, a key input unit b and a clock unit.
6. The metrological simulation training apparatus as claimed in claim 5, wherein the control unit b is provided with a multi-functional port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020682.2U CN213935355U (en) | 2020-12-15 | 2020-12-15 | Metering simulation training device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023020682.2U CN213935355U (en) | 2020-12-15 | 2020-12-15 | Metering simulation training device |
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| CN213935355U true CN213935355U (en) | 2021-08-10 |
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| CN202023020682.2U Active CN213935355U (en) | 2020-12-15 | 2020-12-15 | Metering simulation training device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Measurement simulation training device Effective date of registration: 20220523 Granted publication date: 20210810 Pledgee: The Great Wall West Bank Bank of China Deyang hi tech branch Pledgor: SICHUAN DEYANG DEYI ELECTRONIC INSTRUMENT Co.,Ltd. Registration number: Y2022980006153 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |