Reactive compensation structure for metallurgical submerged-arc furnace

Abstract

The invention relates to a reactive compensation structure for a metallurgical submerged-arc furnace, comprising an electric furnace transformer connected with input current; the backward position of the electric furnace transformer is connected with an electric furnace body by a short network; a main circuit is connected in parallel with a medium voltage compensation unit at the medium voltage side of the electric furnace transformer; and a low voltage compensation unit is connected in parallel at the front end of the short network. The reactive compensation structure of the metallurgical submerged-arc furnace has the advantages of reducing the energy consumption of the metallurgical submerged-arc furnace, achieving the aim of saving energy and reducing consumption, simultaneously keeping the natural power factor of the metallurgical submerged-arc furnace more than 0.9, improving product output and running stably.

Description

technical field [0001] The invention relates to a reactive power compensation structure, in particular to a reactive power compensation structure of a metallurgical submerged arc furnace. Background technique [0002] Reactive power compensation plays a role in improving the power factor of the power grid in the power system, reducing the loss of electrical equipment and transmission lines, improving power supply efficiency, and improving the power supply environment. The reactive power compensation device plays an indispensable and very important position in the power supply system. Reasonable selection of compensation devices can minimize the loss of the network and improve the quality of the power grid. On the contrary, if it is improperly selected or used, it may cause many factors such as power supply system, voltage fluctuation, and harmonic increase. [0003] In electric power production, metallurgical submerged arc furnace is a high-energy-carrying equipment and a ...

AI Technical Summary

Problems solved by technology

In the reactive power compensation of the short network, due to the large demand for compensation of large-capacity metallurgical submerged arc furnaces, the operating voltage of the short network is low (generally between 120V and 180V), so the number of low-voltage capacitors required is only large. The area around the furnace body is large, and most metallurgical submerged arc furnaces are currently limited by the site, and there is not enough space to install capacitors for compensating short-circuit reactive power, so they cannot meet the compensation requirements.

Images