Induced frequency-discrimination open-phase remote alarm for distribution transformer

Abstract

The invention provides an induced frequency-discrimination open-phase remote alarm for a distribution transformer. The alarm comprises a signal collection circuit, a signal judgment circuit and a wireless alarm transmission circuit, wherein the signal collection circuit is connected with the signal judgment circuit; the signal judgment circuit is connected with the wireless alarm transmission circuit; and when a running distribution transformer is in open phase due to a fused melt or other reasons on a certain phase of fuse, an inductive electrode does not have induced electricity, the G electrode of an insulated gate field effect thyristor does not have electricity, the S electrode and D electrode of the insulated gate field effect thyristor are connected, a normally open contact of a solid state relay is closed, the open phase signal is instantly transferred to the wireless alarm transmission circuit to perform remote alarm, the signal is transferred to the mobile phone of an operator on duty, and the operator on duty can immediately process the power-off accident after receiving the alarm condition, so that the time for processing failure of electrical equipment is shortened, the power supply reliability is improved, and enterprise and social benefit are increased.

Description

technical field [0001] The invention relates to a remote alarm technology for lack of phase during operation of a distribution transformer, which is applied to a remote alarm when high and low voltage fuses are blown during operation of a distribution network power supply transformer. Background technique [0002] At present, with the rapid development of industrial and agricultural production, the rapid improvement of the national economy, the continuous improvement of people's living standards, the unprecedented development of the power industry, and the rapid development of the national power grid construction. The power of the power grid is transformed by the distribution transformer and sent to thousands of households. The current operating distribution transformer and the 400V power distribution system below are basically out of order because they cannot be monitored in real time. The user will notify the maintenance personnel to repair the equipment. It takes a long t...

AI Technical Summary

Problems solved by technology

The power of the power grid is transformed by the distribution transformer and sent to thousands of households. The current operating distribution transformer and the 400V power distribution system below are basically out of order because they cannot be monitored in real time. The user will notify the maintenance personnel to repair the equipment. It takes a long time to deal with faults and has a great impact on power outages for users. Therefore, the reliability of power supply is low and the damage rate of equipment is high, which cannot meet the requirements of continuous improvement of people's living standards. When a phase loss accident occurs in a transformer, the maintenance personnel will be able to repair it in time at the scene, shorten the time for handling the accident, increase the power supply, and increase the benefits of the enterprise and society

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