Intelligent combined power capacitor

Abstract

The invention provides an intelligent combined power capacitor, relating to reactive compensation equipment of a low-voltage distribution network. The intelligent combined power capacitor comprises a shell (1), a touch control panel (3), a micro-electronic measurement and control device, a capacitor combined switching switch with harmonic cancellation, a main power switch, a plurality of wiring ends and a protective cover (2), wherein the touch control panel (3) is arranged at the front end of the shell (1) and faces to the front side surface of the shell (1); the micro-electronic measurement and control device is arranged in the shell (1) and comprises a single chip microcomputer; the capacitor combined switching switch with harmonic cancellation is arranged in the shell (1) and is controlled for switching by the micro-electronic measurement and control device; the main power switch is arranged at the rear end of the shell (1), and a switch handle faces to the top surface of the shell (1); the plurality of wiring ends are arranged at the rear end of the shell (1), and the opening directions of the wiring ends are vertical to the rear side surface of the shell (1); and the protective cover (2) is arranged at the rear end of the shell (1) and is used for preventing accidents caused by that the wiring ends are touched by misoperation or foreign matters enter the wiring ends. In the intelligent combined power capacitor, the use is safe when in switching, the impact current is less, the service life is long, the cost is low, and the installation and the operation are simple and convenient.

Description

technical field [0001] The invention relates to reactive power compensation equipment for a 0.4KV power grid, in particular to equipment for low-voltage distribution networks and reactive power compensation, specifically an intelligent combined power capacitor. Background technique [0002] Most of the equipment in the power grid is a dry load, and the power environment and space environment are relatively harsh. It is usually necessary to connect reactive power compensation devices such as capacitors in parallel in the power grid to reduce the reactive power loss generated by inductive loads and increase the reactive power loss during line transmission. [0003] Installing capacitors for reactive power compensation is a measure with relatively little investment and obvious effects of energy saving and loss reduction. The more commonly used compensation methods in the existing market are to install capacitor banks on busbars, to install capacitor banks in distributed parall...

AI Technical Summary

Problems solved by technology

It has the following disadvantages: large switching current, surge current to the line, short service life of switching relay contacts, complicated wiring, large space occupation, inconvenient maintenance and repair, high cost, many mechanical connection parts, and easy failure of equipment

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