Air-insulated intelligent vacuum ring main unit

Abstract

The invention relates to an air-insulated intelligent vacuum ring main unit. The air-insulated intelligent vacuum ring main unit comprises a cabinet body; a bus-bar room, a relay instrument room, a switch room and a cable room are arranged in the cabinet body; a bus-bar slot and a first temperature sensor are arranged in the bus-bar room; a relay is arranged in the relay instrument room; a load switch group and a second temperature sensor are arranged in the switch room; an insulator group is arranged between the load switch group and the bus-bar room; a fuse, an operating mechanism and a current transformer are connected between the load switch group and the bus-bar room; a control room and a wind chamber are arranged to one side of the switch room; a circuit board and a PLC are arrangedin the control room; the circuit board is provided with a data storage module, a wireless transmission module and a wireless receiving module; and a first fan and a second fan are arranged to one sideof a first partition plate between the wind chamber and the switch room. According to the air-insulated intelligent vacuum ring main unit of the invention, a reasonable combination layout is adopted,so that busbar combination functions can be expanded, operating states are monitored in real time, the degree of intelligent management can be improved, inspection and maintenance costs can be reduced, high self-heat dissipation performance is realized, the introduction of moisture can be avoided, and the safety of electricity utilization and energy-saving performance can be ensured.

Description

technical field [0001] The invention relates to an air-insulated intelligent vacuum ring network cabinet, which belongs to the technical field of ring network cabinets. Background technique [0002] Ring network cabinet is a group of high-voltage switchgear installed in steel metal cabinets or electrical equipment made of assembled spaced ring network power supply units. It is composed of the busbars of each outlet cabinet connected together. It has the advantages of simple structure, small size, low price, can improve power supply parameters and performance, and power supply safety. Air-insulated ring network cabinet, also known as semi-insulated ring network cabinet, uses dry air as switch insulation and arc extinguishing medium, not only the insulation and arc extinguishing performance is better than SF6 gas, but also has no environmental pollution. The high-voltage live switch is installed in a sealed air box In the middle, the air pressure is constant and not affected ...

AI Technical Summary

Problems solved by technology

The air-insulated ring network cabinet, also known as the semi-insulated ring network cabinet, uses dry air as the switch insulation and arc extinguishing medium. Not only is the insulation and arc extinguishing performance better than SF6 gas, but also there is no environmental pollution. The high-voltage live switch is installed in a sealed air box. In the middle, the air pressure is constant and is not affected by the environment, so it can be used in plateau, saline-alkali, and humid areas. The air-insulated ring main unit in the prior art uses load switches-isolating switches, load switches-high voltage fuses, and vacuum circuit breakers. Combination of switch-isolating switch, each unit cabinet can be used alone or combined freely, however, when the extended busbar energy supply is used in combination, the running status is only displayed through the relay instrument room, which requires regular inspection and investigation, and the cost is high, and the cabinets The heat dissipation problem has been difficult to be effectively controlled for a long time, and the air that only circulates inside is difficult to effectively discharge heat, and the single heat dissipation hole structure is easy to attract excessive moisture, which affects the safety of electrical appliances, and needs to be improved urgently

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