Compact American-type substation

Abstract

The invention relates to the technical field of substations, and particularly relates to a compact American-type substation, which comprises a high voltage chamber, a low voltage chamber and a transformer chamber, and is characterized by further comprising a terminal control chamber, wherein the high voltage chamber is divided into a high voltage switch cabinet and a high voltage wire incoming cabinet; the low voltage chamber is divided into a low voltage general switch cabinet, a low voltage feeder line cabinet and a compensation cabinet; the compensation cabinet is internally provided with a compensator; the terminal control chamber is internally provided with a microcomputer comprehensive protection device, a meter, a high voltage on-load voltage regulation device and a data transmission unit; the high voltage chamber, the low voltage chamber and the terminal control chamber are arranged inside the box body; and the transformer chamber is located outside the box body. According to the compact American-type substation, the structure is simple, maintenance and feeder line increasing are convenient, intelligent management is realized conveniently, the working process is reduced due to phase sequence adjustment, reserved space is reduced, the covered area is reduced, remote control, remote communication and remote measurement on electrical equipment can be realized, and remote power grid data acquisition, detection, control and other performance requirements by the user can be met.

Description

technical field [0001] The invention relates to the technical field of substations, in particular to a compact American-style substation. Background technique [0002] The current box-type substation (referred to as box-type substation) is a compact substation that combines high-voltage switchgear distribution transformers, low-voltage switchgear, electric energy metering equipment and reactive power compensation devices in one or several boxes according to a certain wiring scheme. Type complete power distribution device. It is suitable for use in three-phase AC systems as a circuit and for distributing electrical energy. [0003] The European-style box-type transformer is to install the transformer and ordinary high-voltage and low-voltage electrical equipment in the same metal casing box. The temperature in the transformer room is very high, which causes difficulty in heat dissipation, affects the capacity utilization rate, and affects the internal performance of the tran...

AI Technical Summary

Problems solved by technology

The harmful gas dissolved in the transformer oil when the high-voltage load switch is in the same tank as the transformer degrades the performance of the transformer. When the high-voltage load switch and the transformer are separated into boxes, the harmful gas generated affects the performance of the switch; the high-voltage load switch cannot be seen in the oil tank Obvious disconnection point, inconvenient maintenance, unable to realize intelligent control; backup fuse is placed in the oil tank, inconvenient maintenance; compact American-style substation has a compact structure and small space, making the feeder difficult; box-type substations are exposed to direct sunlight for a long time Under high temperature conditions, high temperature affects the heat dissipation of molded case circuit breakers, compensation systems, and terminal control systems, making protection systems and signal transmission units prone to damage and abnormal operation, causing systemic failures in substations, reducing the life of transformers, and destroying transformers in severe cases; The phase sequence arrangement of the low-voltage outgoing line of the transformer is inconsistent with the busbar standard of the low-voltage cabinet, which makes the working procedure complicated when the low-voltage cabinet is connected to the transformer; the size of the reserved space increases, and the manufacturing shell increases; resulting in an increase in material costs

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