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Submerged-arc furnace controller with low-pressure reactive compensation and electrode current control

A technology of electrode current and controller, applied in reactive power compensation, reactive power adjustment/elimination/compensation, furnace control device, etc., can solve problems such as lack of automatic control

Inactive Publication Date: 2013-04-10
QINGHAI HUABO TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there are also controllers that control the rise and fall of the three electrodes to control the current of the three electrodes, but they lack the means to automatically control the power factor at the same time

Method used

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  • Submerged-arc furnace controller with low-pressure reactive compensation and electrode current control
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  • Submerged-arc furnace controller with low-pressure reactive compensation and electrode current control

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Embodiment Construction

[0098] The invention relates to a submerged arc furnace controller with low-voltage reactive power compensation and electrode current control, which consists of two parts: controller hardware and control software. The relationship between them is: the control software controls and manipulates the controller hardware.

[0099] 1. Controller hardware:

[0100] The principle block diagram of the controller of the present invention is as figure 1 shown.

[0101] (1), current transformer 1:

[0102] In the power transformer of the submerged arc furnace, its own current transformer is generally installed (we call it: the original current transformer), and its output value is to meet the needs of the instrument installed on the instrument console of the submerged arc furnace. , may not be able to meet the needs of the controller. In order to meet the needs of this controller, we set up the current transformers required by each phase in this controller. We call it: current trans...

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Abstract

The invention relates to a submerged-arc furnace controller with low-pressure reactive compensation and electrode current control. The controller with low-pressure reactive compensation and electrode current control comprises controller hardware and control software, wherein the control software is used for controlling and manipulating the controller hardware; the controller hardware comprises a current transformer (1), a voltage transformer (2), a high-precision three-phase special electric-energy metering chip (3), an ARM (Advanced RISC Machines) microcontroller (4), a power factor control output segregation interface (5), a current control output segregation interface (6), an abnormal event input segregation interface (7), an analog-quantity input interface (8), a keyboard, an LED (Light Emitting Diode) indicating lamp (9), an LCD (Liquid Crystal Display) (10) and a communication interface (11); and the control software refers to the control over all phases of current and all phases of power factors. According to the controller provided by the invention, low-pressure compensation is carried out on a three-phase power supply of a submerged-arc furnace through phase splitting, and electrode current is controlled to run in a balanced way at the value close to the optimum value, so that the purposes of increasing all phases of power factors, saving energy and improving efficiency are achieved.

Description

Technical field: [0001] The invention relates to a three-phase phase-separation serial controller for a submerged arc furnace, in particular to a submerged arc furnace controller with low-voltage reactive power compensation and electrode current control, which is an energy-saving and efficiency-enhancing controller for a submerged arc furnace. It belongs to the technical field of industrial electrical equipment. Background technique: [0002] At present, most submerged arc furnaces in China use three-phase alternating current as energy source for smelting production. Under the premise that the furnace body, material ratio, production process, and personnel operation are basically stable, the change of energy and electrical parameters has the greatest impact on the submerged arc furnace. Under the premise that the voltage is basically stable, the main electrical parameters that affect the energy saving and efficiency enhancement of the submerged arc furnace are whether the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D19/00H02J3/18
CPCY02E40/30
Inventor 朱定国朱铁军朱靖江朱磊景满德尚国斌史春来甘广霖
Owner QINGHAI HUABO TECH
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