Indoor and outdoor short circuit identification method based on meter box monitoring terminal and smart meter

Abstract

The invention relates to an indoor and outdoor short circuit identification method based on a meter box monitoring terminal and an intelligent electric meter. The method comprises the following stepsof: (1) collecting the current of a main incoming line of a meter box; (2) calculating a sudden change value between adjacent sampling current points; (3) judging whether the adjacent current sudden change value belongs to a specific interval, if yes, judging that a short-circuit event occurs, and entering step (5); if not, judging that no short-circuit event occurs, and entering the step (4); (4)performing current data acquisition on each electric meter and returning to the step (1); (5) collecting the current data of each electric meter, and calculating the change value between the currentdata and the previous current data; (6) judging whether the current change value belongs to a specific interval b1 or not and whether the current belongs to a specific interval b2 or not; if yes, judging that the electric meter user is short-circuited; and if not, judging that the electric meter user is not short-circuited; and (7) if it is judged that short circuit does not occur in all the electric meter users, judging that short circuit occurs in a certain user in the meter box. Whether an indoor or outdoor short circuit occurs or not can be analyzed, and the rush-repair speed and efficiency are improved.

Description

technical field [0001] The invention relates to an indoor and outdoor short-circuit identification method based on a meter box monitoring terminal and a smart meter, and belongs to the technical fields of smart grid and smart electricity utilization. Background technique [0002] The short-circuit event of residential users is the main reason for the tripping of circuit breakers. By analyzing indoor and outdoor short-circuit events, it is helpful for power companies to conduct outage fault research and judgment, and improve the fault operation and maintenance capabilities of low-voltage distribution networks. Usually, the current generated after a short circuit can reach more than 200A. However, the traditional smart meter has a small current collection rating and weak data analysis capabilities, so it cannot collect and analyze large currents. It makes it difficult for the power supply company to carry out responsibility research and judgment for indoor and outdoor short-c...

AI Technical Summary

Problems solved by technology

Usually, the current generated after a short circuit can reach more than 200A. However, the traditional smart meter has a small current collection rating and weak data analysis ability, so it cannot realize large current collection and analysis.

It makes it difficult for power supply companies to carry out responsibility research and judgment for indoor and outdoor short-circuit and power outage accidents, which affects the speed and efficiency of emergency repairs

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