Ring network cabinet multi-breaker structure of urban 10KV distribution network

Abstract

The invention discloses a ring network cabinet multi-breaker structure of an urban 10KV distribution network, which comprises a cabinet body, wherein the cabinet body is internally provided with an incoming line, an outgoing line, a metering module and an incoming line bus. According to the characteristics of urban 10kV ring network power distribution, in a box body of a ring network cabinet, a plurality of circuit breakers are divided into an upper row and a lower row to be installed on adapters and then installed in the box body of the power distribution cabinet or the ring network cabinet through the adapters, and incoming and outgoing lines of the circuit breakers in the upper row and the lower row are switched over through the adapters; and the operation of dividing the plurality of circuit breakers into the upper row and the lower row to be installed on the adapters refers that each two of the plurality of circuit breakers form a group, and the two circuit breakers in each groupare installed on the adapter in an up-down arrangement mode. Through the modular and standardized structure, the standardization degree of the product can be greatly improved, and the production and purchase cost can be reduced.

Description

technical field [0001] The invention relates to a component device of a power distribution system, in particular to an environment-friendly ring main unit used in an urban 10kV power distribution network, and belongs to the technical field of power distribution equipment manufacturing. Background technique [0002] The 10KV urban distribution network cable and the urban network project started in the late 1990s, and the urban network basically has no overhead lines. In order to cooperate with the load distribution of the urban network into the ground and the urban distribution network, many new devices have appeared. For example, SF6 represented by ABB is an insulated ring network cabinet. However, both ABB products and similar products of domestic manufacturers have the following shortcomings: [0003] 1. SF6 is a poisonous gas, and its leakage will endanger public safety; [0004] 2. SF6 is sealed in the stainless steel shell, which is not conducive to the new load of t...

AI Technical Summary

Problems solved by technology

[0003] 1. SF6 is a poisonous gas, and its leakage will endanger public safety;

[0004] 2. SF6 is sealed in the stainless steel shell, which is not conducive to the new load of the urban network;

[0005] 3. If there is a fault in the air chamber, all lines must be powered off, which is not conducive to reducing the power outage area

[0006] 4. All products must be customized individually, with a low degree of standardization

However, due to the installation quantity of circuit breakers, it is generally selected according to the arrangement of lines. For three-term four-wire distribution cabinets (boxes), it is often necessary to install multiple circuit breakers in the box, and when arranging circuit breakers At present, they are installed horizontally and lined up on the same strip. This arrangement of circuit breakers will greatly increase the size of the entire box in the horizontal direction, resulting in inconvenient construction of the ring network cabinet during on-site installation. , and if the size is too large, it will also affect the appearance, so it is necessary to improve this

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