Alternating current line poor contact fault monitoring device

Abstract

The invention discloses an alternating current line poor contact fault monitoring device which comprises a first CPU control unit, a reading unit, a voltage acquisition unit, a receiving unit and a second CPU control unit, wherein the first CPU control unit is coupled with the reading unit; the reading unit is coupled with the voltage acquisition unit; the voltage acquisition unit is coupled with the receiving unit; the receiving unit is coupled with the second CPU control unit; the voltage acquisition unit acquires voltage data and sends the voltage data to the receiving unit, and the receiving unit sends the voltage data to the second CPU control unit; the second CPU control unit calculates line resistance according to the voltage and sends the line resistance to the reading unit; and the reading unit sends the line resistance to the first CPU control unit, and the first CPU control unit generates a line contact resistance state record according to the line resistance. Maintenance personnel judge whether a load power supply breaks down or not according to the generated line contact resistance state record and repair the fault in time, so that the power production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of AC power system monitoring, in particular to a fault monitoring device for poor contact of AC lines. Background technique [0002] With the continuous development of society, the use of alternating current is almost everywhere, and most of the alternating current that people use every day is transmitted from substations. However, the power distribution network of the station AC system is tapped and switched by the AC power distribution panel and the distribution box. When the line is tapped, there are busbars, busbars, terminals, various protection devices, etc., and the number of nodes is large. Due to the existence of vibration Or long-term operation leads to rust, which will inevitably increase the resistance of the node contact, resulting in poor contact of the line; while the AC load is mostly a high-power load, when there is a poor contact of the line, the voltage drop will increase, and the voltage...

AI Technical Summary

Problems solved by technology

However, the power distribution network of the station AC system is tapped and switched by the AC power distribution panel and the distribution box. When the line is tapped, there are bus bars, bus bars, terminals, various protection devices, etc., and there are many nodes. Due to the existence of vibration Or long-term operation leads to rust, which will inevitably increase the resistance of the node contact, resulting in poor line contact; while the AC load is mostly a high-power load, when there is a poor line contact, the voltage drop will increase, and the voltage at the load terminal will drop, resulting in The lack of phase of the load power supply cannot operate normally

In the prior art, when the load power supply lacks a phase and cannot operate normally, the relevant maintenance personnel can know that the load power supply has failed, and then carry out maintenance for the load defect and power loss fault, which reduces the power production efficiency

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