Reactive power compensation connection method of low-voltage side of high-capacity submerged-arc furnace

Abstract

The invention relates to a low-voltage reactive power compensation connection technology of a submerged-arc furnace, in particular to a reactive power compensation connection method of the low-voltage side of a high-capacity submerged-arc furnace. According to the reactive power compensation connection method of the low-voltage side of the high-capacity submerged-arc furnace, a capacitor device is arranged on an electrode system, and a short net copper pipe is arranged between an electrode water-cooling cable and a copper tile. A copper bar is welded on the short net copper pipe, and the electrode water-cooling cable is connected to the copper bar. The water-cooling cable is connected with a reactive power compensation device through the short net copper pipe, and the length of the water-cooling cable is equal to that of the water-cooling cable connected with a short net of the submerged-arc furnace. The sectional area of the water-cooling cable is 2000mm<2>, the outer diameter of the copper pipe is 60mm, the inner diameter of the copper pipe is 40mm, and the wall thickness of the copper pipe is 10mm. According to the reactive power compensation connection method of the low-voltage side of the high-capacity submerged-arc furnace, a connection joint of the compensation device is moved forwards to the joint of the water-cooling cable and the copper tile and directly compensated to an electrode end, therefore, on-site compensation is truly achieved, and the aim of reactive power on-site balance is achieved. The smelting characteristic of the submerged-arc furnace is thoroughly improved, the aims of increasing yield and reducing consumption are achieved, and the best compensation effect is achieved.

Description

[0001] technical field [0002] This patent relates to low-voltage reactive power compensation connection technology for submerged arc furnaces, specifically a connection method for reactive power compensation at the low-voltage side of large-capacity submerged arc furnaces. [0003] Background technique [0004] At present, with the continuous improvement of submerged arc furnace production and complete sets of technology, as well as the introduction and digestion of foreign submerged arc furnace technology, the capacity of submerged arc furnaces in my country has become larger and larger in recent years. Ferrosilicon furnaces are generally at 25000kVA, and calcium carbide furnaces are all Reaching 50,000kVA, the larger the capacity of the submerged arc furnace, the larger the current at the low-voltage side, resulting in low voltage, the large impedance of the low-voltage short-network system, and the low power factor, which have a great impact on the smelting of the submer...

AI Technical Summary

Problems solved by technology

When performing compensation on the low-voltage side, using this connection method, this part of the impedance caused by the water-cooled cable will not be reduced, which will affect the compensation effect

Images