Intelligent overcurrent phase-failure protector of distribution transformer

Abstract

The invention discloses an intelligent overcurrent phase-failure protector of a distribution transformer. The intelligent overcurrent phase-failure protector is characterized by comprising a signal data acquisition circuit, a signal data calculation judgment circuit, a switch operating circuit and an optical terminal circuit. The signal data acquisition circuit acquires signal data from a distribution transformer device system, and the output of the signal data acquisition circuit is connected with the signal data calculation judgment circuit and the optical terminal circuit. The output of the signal data calculation judgment circuit is connected with the switch operating circuit and the optical terminal circuit. The switch operating circuit is connected with the optical terminal circuit. The optical terminal circuit is connected with an optical fiber communication cable circuit, and the optical fiber communication cable circuit is connected with a distribution network intelligent control center. The intelligent protector can be applied to carry out intelligent overcurrent phase-failure protection management in the running process of the distribution transformer by utilizing an advanced electronic technique; and when high / low voltage overcurrent and phase failure accidents generate in the running process of the distribution transformer, an overhaul staff can immediately reach the accident scene to overhaul, thus the accident processing time is shortened, the power supply quality is increased, and the corporation and social benefits are increased. Meanwhile, the intelligent overcurrent phase-failure protector disclosed by the invention also exerts the positive facilitation to the development of an intelligent technique of an electric distribution system.

Description

technical field [0001] The invention relates to an overcurrent and phase loss protection technology during operation of a distribution transformer, which is applied to high and low voltage overcurrent during operation of a power supply transformer in a distribution network, when the melt of a fuse is blown or other reasons for phase failure protection and protection. Call the police from afar. 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 mo...

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. Inspection and maintenance, such fault treatment takes a long time, and has a great impact on users' power outages. Therefore, the reliability of power supply is low, and the equipment damage rate is high, which cannot meet the requirements of continuous improvement of people's living standards. If the overcurrent and phase loss remote alarm technology can be fully promoted , when a transformer overcurrent or phase loss accident occurs, the maintenance personnel can go to the scene at the first time to repair it in time, shorten the accident handling time, increase the power supply, and increase the enterprise and social benefits

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