Ring main unit

Abstract

The invention belongs to the technical field of electric equipment and particularly discloses a ring main unit which comprises a PT power cabinet, a distribution network automation cabinet and a plurality of switch bodies. The PT power cabinet is connected with the distribution network automation cabinet and the switch bodies and provides power for the distribution network automation cabinet and the switch bodies. The ring main unit further comprises a storage battery module which is used for providing emergency power for all circuits on the condition that external power supply of the PT power cabinet is off. The distribution network automation cabinet is connected with the switch bodies, collects data of the switch bodies, monitors the switch bodies, and communicates the collected data with the outside. The switch bodies are respectively connected with the PT power cabinet and the distribution network automation cabinet and are used for completing switching-on and switching-off of the ring main unit. By the adoption of the ring main unit, the overall design of the ring main unit is optimized, so that internal connecting wires of the ring main unit can be simplified, on-site installation workload can be reduced, and maintenance-free can be realized, cost can be reduced, and power supply reliability can be improved.

Description

technical field [0001] The application belongs to the technical field of electric equipment, and in particular relates to a ring network cabinet. Background technique [0002] With the continuous and rapid development of my country's social economy and the continuous improvement of people's living standards, power users have put forward higher requirements for power supply reliability, power quality and power supply security. The smart distribution network that is vigorously promoted in China is developing rapidly. As the main power equipment of the smart distribution network, the ring main unit can greatly improve the reliability and economy of power supply of the distribution network, reduce labor intensity, improve management level and service quality and promote the development of smart distribution network. [0003] How to better conduct on-line monitoring, data processing, communication and remote control of distribution network and power equipment, and improve the sa...

AI Technical Summary

Problems solved by technology

The problems brought about by this are: 1. There are too many functional components in the DTU, resulting in a relatively large volume of the DTU itself, which is very inconvenient for installation and future maintenance.

②The dependence of the ring network cabinet on the DTU is increased. Now many ring network cabinets use the battery that comes with the DTU. If the DTU fails and needs to be repaired, it is easy to cause the power failure of the entire secondary control circuit of the ring network cabinet. For the ring network cabinet In terms of the safe operation of the network cabinet, it has caused great harm, which is not conducive to improving the reliability of power supply.

③Some functions of the modules in the DTU are duplicated with those of other modules in the ring network cabinet, which is not conducive to the optimization of the overall function and performance of the equipment; ④The cost of this DTU is relatively high, which increases the manufacturing cost of the entire cabinet, which is not conducive to the ring network cabinet promotion and application of

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