Intelligent low-voltage ring main unit

Abstract

The invention discloses an intelligent low-voltage ring main unit. The intelligent low-voltage ring main unit comprises a cabinet body, power-supply-side isolation knife switches, load-side isolation knife switches, main busbars, auxiliary busbars, a zero busbar and a backup source, wherein two groups of power supply-side isolation knife switches and load-side isolation knife switches are installed on the cabinet body, the zero busbar is installed on the lower part of the cabinet body by virtue of an insulator device, the main busbars are connected onto the power-supply-side isolation knife switches and the load-side isolation knife switches, each auxiliary busbar is connected with the corresponding main busbar, the upper part of the cabinet body is provided with the backup source. Since three auxiliary busbars are adopted and an electric connection structure for arranging two groups of main busbars between the two isolation knife switches are adopted, the electric circuit design of the low-voltage ring main unit is maximally simplified, the circuit contacts are reduced, the repairing rate is low, the safety is high, the consumption of copper bars of the ring main unit can be reduced, the consumption of the copper bars compared with the that of the copper bars of the traditional low-voltage ring main unit is reduced by 70 percent, the manufacture cost is reduced, and the power supply reliability and economic benefit can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of low-voltage ring network cabinets, in particular to an intelligent low-voltage ring network cabinet. Background technique [0002] Electricity is one of the important energy sources in our country. At present, various cities in our country have high requirements for the layout of electric power. Due to various factors such as the variety of ring network cabinets and the complexity of the installation site, it is difficult to monitor the 10KV ring network cabinet. In order to solve the above problems, it is necessary to develop a fault diagnosis device for the ring network cabinet with remote communication means. This device can use the current transformer as the power supply and the super capacitor as the backup power supply to detect the operating status of the line and the occurrence of the fault in real time. Location, such as power transmission, power outage, grounding, short circuit, overcurrent,...

AI Technical Summary

Problems solved by technology

[0002] Electricity is one of the important energy sources in our country. At present, various cities in our country have high requirements for the layout of electric power. Due to various factors such as the variety of ring network cabinets and the complexity of the installation site, it is difficult to monitor the 10KV ring network cabinet.

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