Medium-high-voltage line current spillage warning device

Abstract

The invention relates to the technical field of electric power equipment metering detection, in particular to a medium-high-voltage line current spillage warning device. The device comprises an 8-shaped insulating shell; a first main body and a second main body with the magnetoconductivity are fixed on the inner side of the insulating shell at intervals from top to bottom; both the first main bodyand the second main body adopt hollow cylindrical structures; high-voltage induction coils are uniformly wound on the outer side of the first main body; low-voltage induction coils used for meteringan induction current are uniformly wound on the outer side of the second main body; the high-voltage induction coils and the low-voltage induction coils are not overlapped; the insulating shell and the first main body are provided with communication grooves used for lead wires to enter and exit; the output end of the low-voltage induction coils is connected with a line current spillage warner; andthe output end of the current spillage warner is connected with a warning indication lamp. Whether a load of a line exceeds a limit or not can be judged directly through the display of the warning indication lamp, so that a line overload condition can be found in time, and a line tripping fault is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of electric equipment metering and detection, and relates to an alarm device for medium and high voltage line current exceeding the limit. Background technique [0002] At present, the power distribution network in urban and rural areas in my country is mainly based on 10kV power distribution network, and the distribution lines in some developed areas adopt the "hand-in-hand" power supply mode, and most power distribution networks still use single-radiating tree-like power supply, and the power supply reliability is relatively high. Difference. Since urban and rural power distribution networks are responsible for power supply in a wide area, complex terrain, and scattered loads, the 10kV lines are intricate, the power supply radius is too long, and there are many line branches. Load switches are installed on each feeder to divide the feeder into different power supply lines. section, resulting in a complex o...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a medium-high-voltage line current over-limit alarm device, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the time-consuming, labor-intensive and labor-intensive problems in finding the fault point when the existing medium-high-voltage line fails due to overload. Low efficiency and potential safety hazards

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