Low-voltage intelligent comprehensive power distribution unit for transformer platform

Abstract

The invention provides a low-voltage intelligent comprehensive power distribution unit for a transformer platform. The low-voltage intelligent comprehensive power distribution unit for the transformer platform comprises an inflaming retarding shell body, a measuring chamber, a feed-out room, an outgoing cable room, an incoming cable room, a main reception room and a reactive capacitance compensation room, wherein the measuring chamber, the feed-out room, the outgoing cable room, the incoming cable room, the main reception room and the reactive capacitance compensation room are arranged in the shell body. A measuring current transformer and a multifunctional electric power measurement meter are arranged in the measuring chamber. The feed-out room is provided with a three-phase copper bar, a feed-out circuit breaker and a neutral bus bar. The outgoing cable room is provided with an outgoing cable support. The incoming cable room is provided with an incoming cable support. The main reception room is provided with a load isolation switch, a circuit breaker which is connected with the load isolation switch and has a remote control function, a reactive compensation sampling current transformer, a power distribution measuring and control instrument connected with the reactive compensation sampling current transformer and a lightning arrester. The reactive capacitance compensation room is provided with a main power circuit breaker, a miniature circuit breaker, a reactive compensation three-phase co-compensation capacitor, a three-phase independent compensation capacitor, a power distribution measuring and control instrument, a controlled combination switch and a temperature and humidity monitor controlled by a temperature and humidity sensor, wherein the temperature and humidity monitor controls a fan and an electric heater to work. The low-voltage intelligent comprehensive power distribution unit for the transformer platform has the advantages of insulation, intelligence, remote control and multiple functions.

Description

Technical field [0001] The invention relates to the field of power distribution technology, in particular to a low-voltage intelligent integrated power distribution device used on a transformer station. Background technique [0002] At present, the domestic low-voltage power distribution device for substations is characterized by a box made of metal material with a main switch and compensation device inside. The compensation device is installed separately from the line protection and isolation device. The cable is introduced from the outside of the box and is fixedly installed by the chassis. The disadvantage is that the automatic switching compensation device has low dynamic compensation accuracy and poor sealing at the inlet and outlet, which is easy to enter rain and dust. , Installation is inconvenient, and the operation process is easy to get electric shock, especially in rainy days. In order to overcome the shortcomings, the patent number is ZL200720192195 technology to im...

AI Technical Summary

Problems solved by technology

Among them, the compensation device is set separately from the line protection and isolation device, the cable is introduced from the outside of the box, and the chassis is fixed and installed. The disadvantage is that the dynamic compensation accuracy of the automatic switching compensation device is low, and the seal of the incoming and outgoing lines is poor and easy to enter rainwater and dust. , the installation is inconvenient, and the operation process is easy to get an electric shock, especially in rainy days, it is even more unsafe to operate

In order to overcome the shortcomings, the patent No. ZL200720192195 technology has improved the box body and the way of entering and exiting the line, but the primary solution is only equipped with a main switch and a fuse, which has insufficient protection. The compensation device is static switching, and the power compensation effect is poor. People have improved the existing technology, such as the disclosed 200910101595.9 patent technology is one example, which is characterized by including box body, cable inlet and outlet room, connecting cable copper bar, isolation fracture, metering transformer, current sampling transformer , protection switch, overvoltage protector, modular intelligent dynamic reactive power compensation device and fuse, which realizes low operating power consumption, step-by-step input of compensation device, easy installation of large-capacity protection switch or fuse, and long service life However, with the development trend of power distribution technology requiring intelligence, high safety factor, and multiple comprehensive functions, the existing technology must continue to overcome its shortcomings

Images