Control system for low-voltage compensation device of ferroalloy submerged arc furnace

Abstract

The invention discloses a control system for a low-voltage compensation device of a ferroalloy submerged arc furnace. The control system comprises the components of a control panel, a master control computer, a PLC, an APF controller, a compensation instruction generator, an ammeter, a power factor transmitter, a voltmeter, a thermometer, a thermistor, a current transformer, a submerged arc furnace transformer, a voltage transformer, a cooling fan, compensation capacitors, a relay and an optoelectronic isolator. The control system for the low-voltage compensation device is advantageous in that stable connection and simple operation in use are realized; the control system can detect various parameter data in the submerged arc furnace in real time; real-time compensation is performed through controlling by the control system; dynamic compensation is realized; the control system has two compensation capacitors; relatively quick response to a compensation object is realized; furthermore continuous compensation power adjustment can be realized; the APF controller has relatively high real-time controlling performance and can satisfy requirements of digital signal processing and system controlling. The control system further has advantages of improving compensation control precision, realizing high stability in operation, and obtaining high suitability for popularization.

Description

technical field [0001] The invention relates to a control system of a compensation device, in particular to a control system for a low-voltage compensation device of a ferroalloy submerged arc furnace, and belongs to the field of electrical equipment control. Background technique [0002] Submerged arc furnace is a kind of electric furnace with wide application and many styles. It is used in metallurgical industry to smelt ferroalloy and matte. The distance between the charge and the charge generates an arc, which converts electrical energy into heat energy and melts the charge to form a high-temperature environment required for the reduction reaction, and at the same time supply a large amount of heat energy required for the reaction, and finally form a product. [0003] At present, the control system used for the low-pressure compensation device of the ferroalloy submerged arc furnace has some shortcomings. It cannot detect the data of various parameters in the ferroalloy ...

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Problems solved by technology

[0003] At present, the control system used for the low-pressure compensation device of the ferroalloy submerged arc furnace has some shortcomings. It cannot detect the data of various parameters in the ferroalloy submerged arc furnace in real time. To achieve real-time compensation, the response speed of a single compensation capacitor is slow, the compensation rate is slow, and the compensation cannot be continuously adjusted. The existing control system for the low-voltage compensation device of the ferroalloy submerged arc furnace can only use the manual operation control panel to set the compensation degree. Does not have an automatic compensation instruction generator, the degree of automation is low, and it is not suitable for large-scale smelting of ferroalloys

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