Three-phase energy meter field detection device and detection method

Abstract

The invention discloses a three-phase energy meter field detection device and a detection method. The three-phase energy meter field detection device comprises a core control unit composed of a micro control unit (MCU) or an embedded system (ARM), a data storage unit connected with the control unit, a power management unit, an alternating current sampling unit, a clock generating unit, a Chinese character display unit, a peripheral interface unit, a keyboard input unit, an overvoltage protection circuit and a self-reset circuit, the peripheral interface unit comprises a voltage input interface, a high precision current clamp meter interface, a pulse signal acquisition interface and a data transmission interface, and the input and output interfaces of the peripheral interface unit are connected with an optical isolation circuit. According to the three-phase energy meter field detection device, the meter error can be calculate, under a no load or less load state of users, the device provides virtual loads to conduct single / three-phase mechanical or electronic energy meter field detection without power cut and disconnection, energy meter field detection accuracy and efficiency are improved; and the users' normal use of electricity is not affected, and the energy meter field detection is completed.

Description

technical field [0001] The invention belongs to the field of electric power metering, and in particular relates to a detection method for a field detection device of a three-phase electric energy meter. The detection device is an all-digital, multi-functional, high-precision and intelligent multi-parameter power frequency measuring instrument. Applying the latest microprocessor technology and digital signal processing technology, the AC sampling method is used to measure power frequency parameters, verify the error of the electric energy meter, and automatically judge the wiring status of the electric energy meter; Voltage and current quality are measured. Background technique [0002] At present, with the rapid construction of the State Grid Corporation's electricity information collection system, the promotion and application of smart energy meters is also accelerating. A large number of smart energy meters are installed on the site every year. The number of energy meters ...

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Problems solved by technology

[0002] At present, with the rapid construction of the State Grid Corporation's electricity information collection system, the promotion and application of smart energy meters is also accelerating. A large number of smart energy meters are installed on the site every year. The number of energy meters is increasing day by day. It is getting more and more heavy. The traditional electric energy meter detection equipment is large in size and complex in operation, which is not convenient for on-site detection.

When the user has no load or the load is low, on-site detection cannot be performed or the detection accuracy is low

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