Reactive compensation structure for metallurgical submerged-arc furnace

A compensation structure, the technology of submerged arc furnace, applied in the direction of reactive power compensation, reactive power adjustment/elimination/compensation, harmonic reduction devices, etc., can solve the problems of only a large number of low-voltage capacitors, low voltage, and inability to meet compensation requirements , to achieve the effect of stable operation, reducing energy consumption and increasing product output

Inactive Publication Date: 2011-10-19
四川伟力得能源股份有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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

Method used

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  • Reactive compensation structure for metallurgical submerged-arc furnace
  • Reactive compensation structure for metallurgical submerged-arc furnace

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Example Embodiment

[0013] like figure 1 The reactive power compensation structure of the metallurgical submerged arc furnace shown in the present invention includes an electric furnace transformer 1 connected to the input current, the downstream of the electric furnace transformer 1 is connected to the electric furnace body 3 through the short network 2, and the medium voltage side of the electric furnace transformer 1 is connected in parallel with the main line The medium-voltage compensation unit is connected in parallel with the low-voltage compensation unit at the front end of the short network 2. Both the medium-voltage compensation unit and the low-voltage compensation unit include a resonant circuit in which a filter reactor 4 and a capacitor 5 are connected in series, and the capacitance in the capacitor 5 is connected in a star-shaped manner. The voltage value of the filter reactor 4 in the medium voltage compensation unit is 10KV, and the withstand voltage value of the capacitor in the...

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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 ...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/01
CPCY02E40/30Y02E40/40
Inventor 陈继军
Owner 四川伟力得能源股份有限公司
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