Submerged Arc Furnace Secondary Reactive Power Compensation Control System and Control Method

A submerged arc furnace and secondary side technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, etc., can solve problems such as lack of compensation effect, over-compensation or under-compensation, and small amount of collected data. Achieve the effect of ensuring data and information sharing, realizing automatic monitoring, and complete parameters

Inactive Publication Date: 2012-02-01
XIAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the secondary reactive power compensation control system of submerged arc furnace is mostly controlled by power factor controller or PLC. The best compensation effect

Method used

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  • Submerged Arc Furnace Secondary Reactive Power Compensation Control System and Control Method
  • Submerged Arc Furnace Secondary Reactive Power Compensation Control System and Control Method
  • Submerged Arc Furnace Secondary Reactive Power Compensation Control System and Control Method

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Embodiment Construction

[0046] like figure 1As shown, in addition to the power system PS, the control system also includes the main control computer PC, display D, input device KM (keyboard, mouse), two conversion interfaces RS1 and RS2, two intelligent power transmitters P1 and P2, primary Side voltage transformer V1, primary side current transformer A1, secondary side voltage transformer V2, secondary side current transformer A2, programmable logic controller PLC, temperature transmitter T, compensation device C, alarm device AL and asynchronous Transmission standard interface RS232. The main control computer PC is electrically connected with the display D and the input device KM (keyboard, mouse). Intelligent power transmitters P1, P2 and programmable controller PLC; one port of intelligent power transmitter P1 is electrically connected through a transmission standard interface, and the other port of intelligent power transmitter P1 is electrically connected to primary side voltage transformer V1...

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Abstract

The invention relates to the field of reactive power compensation of submerged arc furnaces for smelting, and is a secondary reactive power compensation control system and control method of submerged arc furnaces. It is characterized in that the secondary reactive power compensation control system of submerged arc furnaces includes a main control computer Display, input device, two conversion interfaces, two intelligent power transmitters, primary side voltage transformer, primary side current transformer, secondary side voltage transformer, secondary side current transformer, programmable controller, temperature Transmitter, compensation device, alarm device, transmission standard interface and power supply system; the switching control method includes sixteen steps to improve the power factor, increase the effective output rate of the submerged arc furnace transformer, reduce loss, reduce The purpose of three-phase unbalance, increase production, improve automation and enhance human-computer interaction function.

Description

technical field [0001] The invention relates to the field of reactive power compensation of submerged arc furnaces for smelting. It realizes the three-phase unequal cycle switching of the secondary reactive power compensation device of the submerged arc furnace and the monitoring of the operating state of the submerged arc furnace. Power compensation control system and control method. Background technique [0002] The electrical system of submerged arc furnace is mainly composed of high-voltage power supply network, electric furnace transformer, compensator, short network, water cooling system, electrode system, furnace and control system. Its load characteristics are between resistive and inductive, and low voltage and high current The structure and working characteristics of the short network and water cooling system determine that the natural power factor of the submerged arc furnace is difficult to reach more than 0.85, so it is necessary to carry out reactive power comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/18
CPCY02E40/30
Inventor 张传伟
Owner XIAN UNIV OF SCI & TECH
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