Controller of production clearance reactive power compensation device of power supply and distribution systems of small steel rolling workshop

Abstract

The invention relates to a controller of a production clearance reactive power compensation device of power supply and distribution systems of a small steel rolling workshop, which belongs to the field of electrical control. The controller comprises a busbar electricity total current signal collector of the power distribution system, a reactive power detection control board (3) of an upper-level network, a rectifier transformer secondary side TSC device control board (4) of the power supply system, a rectifier transformer secondary side controller (5) of the power supply system and a capacitance compensation switching controller (6). The small steel rolling workshop arranges a high-voltage control cabinet at a 10kV busbar, electrical parameters of the 10kV busbar are collected through a voltage and current detection element and a programmable controller, a mathematical model is used for calculation, and communication with a TSC device hung on the secondary side of a rectifier transformer below each section of the busbar is carried out through a network, thereby emitting a capacitor switching control command, carrying out dynamic compensation on reactive power of a power grid, improving power factor of the power supply system under the working condition that a bar production line does not roll steel, ensuring that the power factor of the power supply system achieves the relevant national standards and effectively saving power energy.

Description

technical field [0001] The invention belongs to the field of electrical control, and in particular provides a reactive power compensation device controller for the production gap of the power supply and distribution system of a small steel rolling workshop; it is suitable for improving the power supply quality and power factor of the power grid of the power supply system of small steel rolling enterprises such as rods and wires. It has very good energy-saving effect. Background technique [0002] At present, harmonics, electromagnetic interference, and power factor reduction have been listed as the three major public hazards of the power system. How to filter the high-order harmonics in the power supply and distribution system and improve the power factor of the power supply and distribution system has very positive significance for improving the quality of power supply and ensuring the safe and economical operation of the power system. [0003] For small rolling mills with...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a reactive power compensation device controller for the power supply and distribution system of a small-scale steel rolling workshop, which solves the problem that during the production process of small-scale steel rolling workshops such as rods and wires, in the production gap of rolling steel, due to the rolling mill not working or working in the air The problem of low power factor of the power grid under load conditions, improve the quality of power supply, and save electric energy

The invention can solve the problem of low power factor of the power grid due to no compensation device in the power system during the production interval of unrolled steel

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