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Power coordination control method for operation of multiple electric furnaces

A technology of coordinated control and electric furnace, applied in furnace control device, electrical program control, comprehensive factory control, etc., can solve the problems of power supply system influence, failure to consider the overall power fluctuation of the smelter plant, and inability to guarantee system reliability, etc., to ensure reliable performance, improve control accuracy

Active Publication Date: 2015-07-29
CHINA ENFI ENGINEERING CORPORATION
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Problems solved by technology

However, when a smelter has multiple electric furnaces, its power fluctuation is the superposition of power fluctuations of each electric furnace
In the related technology, the electrode control is based on the control target of a single electric furnace power setting value, without considering the overall power fluctuation of the entire smelter, and its excessive total power fluctuation often leads to the influence of the power supply system, and the reliability of the system cannot be guaranteed

Method used

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  • Power coordination control method for operation of multiple electric furnaces
  • Power coordination control method for operation of multiple electric furnaces
  • Power coordination control method for operation of multiple electric furnaces

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Embodiment Construction

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0025] In the present invention, unless otherwise clearly specified...

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Abstract

The invention discloses a power coordination control method for operation of multiple electric furnaces. The method comprises the following steps: setting a power set value; acquiring an actual power value; calculating control error and an error change rate of the electric furnaces according to the power set value and the actual power value of an ith electric furnace; calculating comprehensive error of the ith electric furnace according to the control error and the error change rate of the multiple electric furnaces; calculating a rising and falling amplitude value according to the comprehensive error and the error change rate and driving an electrode according to the rising and falling amplitude value. According to the method of the embodiment of the invention, the comprehensive error is calculated according to the control error and the error change rate of the multiple electric furnaces, and the rising and falling amplitude value of each electric furnace electrode is calculated, so the electrode is driven according to the rising and falling amplitude value, the overall power fluctuation of an entire smelting plant is fully considered, the control precision is improved, and the reliability of a power supply system is guaranteed better.

Description

technical field [0001] The invention relates to the technical field of smelting, in particular to a power coordination control method for the operation of multiple electric furnaces. Background technique [0002] Electric furnace is a kind of high-power electrical equipment, and its power fluctuation often constitutes an impact on the power grid. Among them, the voltage fluctuations and harmonics caused by the impact of power fluctuations are likely to seriously affect the power quality. For example, especially for systems that operate on a self-generated isolated grid, the impact is more serious, and may even lead to the decommissioning of generator sets and the collapse of the power supply system. [0003] Among them, since the power fluctuation of the electric furnace is closely related to the control of the electrode, the degree of fluctuation can be reduced by improving the effect of automatic control of the electrode. However, when a smelter has multiple electric fur...

Claims

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Application Information

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IPC IPC(8): F27D19/00G05B19/418
CPCY02P90/02
Inventor 李刚
Owner CHINA ENFI ENGINEERING CORPORATION
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