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Fused magnesia smelting process multilevel demand control method

A technology of fused magnesia and a control method, applied in electrical program control, program control in sequence/logic controllers, etc., can solve the problems of not considering the operation type of fused magnesia furnace, reducing power consumption efficiency, overshoot, etc.

Active Publication Date: 2013-06-05
NORTHEASTERN UNIV LIAONING
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AI Technical Summary

Problems solved by technology

This control method does not take into account the current operation type of the fused magnesia furnace. If the fused magnesia furnace that is being exhausted is cut off for many times, it will not only reduce the quality of fused magnesia, but also endanger the safety of operators.
In addition, the load adjustment method of directly cutting off the power of the fused magnesium furnace is likely to cause overshoot, thereby reducing the efficiency of power consumption

Method used

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  • Fused magnesia smelting process multilevel demand control method
  • Fused magnesia smelting process multilevel demand control method
  • Fused magnesia smelting process multilevel demand control method

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Embodiment Construction

[0073] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings.

[0074] A multi-stage demand control method for fused magnesia smelting process, the process is as follows figure 1 shown, including the following steps:

[0075] Step 1: Obtain the power parameters and operation types of the current smelting process of each electric fused magnesium furnace. The power parameters include: electrode current, secondary side voltage of the transformer in front of the furnace, and power factor; the operation types include feeding and exhaust and main melt;

[0076] In the embodiment of the present invention, the communication connection between the electrode lifting control system of the fused magnesium furnace and the demand control system is established. Every 1 second, the demand control system receives data such as power parameters and operation types of each fused magnesium furnace sent by the electrode lifting contro...

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Abstract

The invention discloses a fused magnesia smelting process multilevel demand control method and belongs to the field of electricity utilization demand control. Electric parameters and operation types of all fused magnesia furnaces in a current smelting process are obtained, and power consumption is predicted according to current general electric loads of all the fused magnesia furnaces. Whether demand control trigger conditions are established or not is judged, and multilevel demand control is executed. When electric demand of the whole factory is predicted to exceed maximum demand limit, demand control measures are not taken immediately, and whether demand control can be achieved or not when the measures are taken again when delay goes on to a next time interval is judged, and therefore when prediction is not accurate, unnecessary control measures can be reduced. In addition, when demand control is performed, the measure affecting the fused magnesia smelting process to the lowest degree is chosen so as to ensure safety and production effect of the smelting process.

Description

technical field [0001] The invention belongs to the field of electricity demand control, and in particular relates to a multi-stage demand control method in the smelting process of electric fused magnesia. Background technique [0002] The smelting process of fused magnesia consumes a lot of electricity. In order to limit the violent fluctuations in the electricity load of fused magnesia enterprises, the power supply department has signed a contract with the electricity-consuming enterprises to stipulate the maximum demand limit; the maximum monthly demand of the electricity-consuming enterprises cannot If you exceed this limit, you will face severe penalties. [0003] Maximum demand, which is the maximum average load (or power) that occurs in all demand measurement periods within a month. The demand period is the period for statistics of electricity demand. my country generally stipulates that the demand period is 15 minutes. Demand, the average value of electric power me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/04C04B2/10
Inventor 柴天佑孔维健张宇灏高文平
Owner NORTHEASTERN UNIV LIAONING
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