Intelligent junction box for electric energy metering
A technology of electric energy measurement and junction box, applied in the direction of measuring electrical variables, measuring devices, measuring time integration, etc., can solve problems such as automatic switching of wrong wiring, and achieve the effect of ensuring correct, convenient use and installation
Pending Publication Date: 2021-01-26
程昱舒
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Problems solved by technology
[0004] In order to solve the problem that the existing junction box lacks the design of load-side wiring error judgment and the function of automatic phase adjustment, the invention provides an intelligent junction box for electric energy metering. On the basis of realizing the traditional junction box circuit switching, the intelligent load Three-phase voltage and current monitoring on the load side, realizing intelligent phase diagnosis on the load side, autonomous switching of wrong wiring, real-time reminders, and timely remote upload to the master station for processing
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Embodiment
[0022] Such as figure 1 As shown, an intelligent junction box for electric energy metering includes an electric energy metering junction box body, and the junction box body is also equipped with an MCU main control unit 1, a switch module 2, a 485 communication module 3, and a carrier communication module 4 , sound and light alarm module 5, current sampling module 6 and voltage sampling module 7;
[0023] The 485 communication module 3 and the carrier communication module 4 are all connected to the MCU main control unit 1 to perform data transmission and exchange with it; at the same time, the 485 communication module 3 and the carrier communication module 4 are coupled to the distribution network master station 8 for connecting the MCU master The processing result of the control unit 1 is transmitted to the distribution network master station 8;
[0024] The voltage sampling module 7 and the current sampling module 6 are all coupled to the load 9, while the voltage sampling ...
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The invention relates to the technical field of electric energy metering junction boxes, and particularly relates to an intelligent junction box for electric energy metering. The intelligent junctionbox comprises an electric energy metering junction box body, wherein the junction box body is also provided with an MCU main control unit, a change-over switch module, a 485 communication module, a carrier communication module, a sound-light alarm module, a current sampling module and a voltage sampling module, wherein the voltage sampling module and the current sampling module collect three-phasevoltage and current of a load side and transmit the three-phase voltage and current to the MCU main control unit for calculation and analysis, and when the analysis result is that the phase is wrong,an instruction is sent to enable the sound-light alarm module to give a sound-light alarm, and meanwhile, the instruction is sent to control the change-over switch module to conduct phase switching,and the serial number and the error information of the intelligent junction box are uploaded to a distribution network main station in a 485 and carrier communication mode. The intelligent junction box is convenient to use and install, intelligent diagnosis, automatic alarm, real-time reminding and automatic adjustment during load side phase misconnection, and automatic switching of wrong wiring are realized, and correct wiring of a load side line is ensured.
Description
technical field [0001] The invention relates to the technical field of electric energy metering junction boxes, in particular to an intelligent junction box for electric energy metering. Background technique [0002] The junction box is an important part of the power metering device. Its function is to connect the secondary wires from the transformer in series and parallel to the terminals of the junction box and then connect them to the terminals of the electric energy meter. State switching is realized by changing the connection position of the junction box during electrical inspection and replacement of the electric energy meter. However, when the junction box is installed, due to the uneven level of on-site staff, complex on-site lines, and difficult to judge the phase of the line, it is easy to cause the wrong connection of the current and voltage phases on the load side, resulting in abnormal measurement data of the electric energy meter, and it is difficult to accurat...
Claims
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IPC IPC(8): G01R22/10G01R11/04
CPCG01R11/04G01R22/10G01R22/063
Inventor 程昱舒
Owner 程昱舒