Low-pressure air switch box of fast-assembly transformer platform

Abstract

The invention discloses a low-pressure air switch box of a fast-assembly transformer platform. The low-pressure air switch box is used for being assembled on the low-voltage side of a distribution transformer district without a comprehensive distribution box, a low-voltage knife switch and a low-voltage main air switch. The low-pressure air switch box comprises a box body, a box door, a low-voltage main air switch, a mutual inductance type meter, a current transformer and a junction box. The low-voltage main air switch is electrically connected with the mutual inductance type meter, the mutualinductance type meter is electrically connected with the current transformer, and the current transformer is electrically connected with the junction box so as to transmit a power supply accessed tothe low-voltage main air switch to the junction box and output the power supply outwards. Through measurement and calculation of the applicant, the cost of each low-voltage air switch box is only 3000yuan, compared with the cost of a traditional comprehensive distribution box vehicle of 13000 yuan, the cost is greatly reduced, the transformation cost can be effectively reduced, and the operationrisk and the power failure influence during low-voltage side operation are reduced. Meanwhile, the metering and remote communication functions are added, and then intelligent management of the low-pressure air switch box is achieved.

Description

technical field [0001] The invention relates to a low-voltage empty box for a fast-installation substation, which belongs to the technical field of the low-voltage side of the distribution transformer station area. Background technique [0002] In the power transmission system, there were no protective measures for the low-voltage side of the distribution transformer area in the early days: no comprehensive distribution box, no low-voltage knife switch, and no low-voltage main circuit breaker. It is easy to burn out the distribution transformer due to overload during the power transmission process. In addition, when the low-voltage side is overhauled, the LaRingke does not meet the safety requirements, and the shutdown of the upper-level power supply will expand the scope of power outages and reduce the reliability of power supply. The applicant once considered installing integrated distribution boxes for these distribution transformers. However, according to calculations, a...

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Problems solved by technology

[0004]Based on the above, the present invention provides a low-voltage air box for quick-installation substations to solve the problem of using a comprehensive distribution box to transform the distribution transformer area in the early transmission system The problem of extremely high cost when there is no protection measure on the low-voltage side

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