Intelligent electric energy meter for realizing fault arc detection function and implementation method thereof

Abstract

The invention discloses an intelligent electric energy meter for realizing a fault arc detection function and an implementation method thereof. According to the invention, a user load circuit is sampled in real time by voltage and current sampling channels, electricity quantity and electricity fee metering is carried out by a professional metering module, data of the sampling channels is shared atthe same time for fault arc voltage and current detection, a fault arc characteristic frequency detection module is additionally arranged, fault arc judgment is carried out through a software algorithm, parallel fault arcs, series fault arcs and grounding fault arcs are detected reliably, active fault arc event reporting can be carried out through an electric energy meter centralized reading system on the basis of not increasing a large hardware cost and not changing the original home wiring, and low-cost and high-efficiency fault arc detection and early warning functions are realized.

Description

technical field [0001] The invention relates to a fault arc detection technology, in particular to an intelligent electric energy meter capable of realizing a fault arc detection function and a realization method thereof. Background technique [0002] Arc is commonly known as "electric spark", also known as "ignition". It is essentially a natural phenomenon in which an insulator changes from non-conductive to conductive, and emits light and heat after being broken down by voltage. Arcs can be divided into three categories: good arcs, similar arcs, and fault arcs. Good arc: The arc produced by artificial manufacturing such as fluorescent lamps, arc welding, and breaking of mechanical switches, or by normal operation. Arc-like: The distortion of current and voltage caused by the start-up or operation of some equipment is similar to some characteristics of the current and voltage of the arc. Arc fault: arc fault is a gas free discharge phenomenon caused by air breakdown cause...

AI Technical Summary

Problems solved by technology

3) The temperature-measuring electrical fire detector uses a temperature sensor to sample the temperature of the monitored area. If the temperature is higher than the threshold, it is judged as an electrical fire accident. Its main protection is to alarm or cut off the circuit after an electrical fire has occurred to prevent further spread of the accident. This method cannot Directly detect and judge fault arc

This method can basically protect various types of fault arcs, but it needs to be installed separately at the main switch of the household. If it is judged locally, once a misjudgment occurs, the main switch will be cut off and the household power will be cut off; For other protection systems, the system cost is relatively high, independent maintenance is required, and customer acceptance is not high

Existing smart energy meters do not yet have the function of arc fault detection

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