Reasons for implementing low-voltage reactive power compensation in mineral thermal furnaces

Reactive power compensation in power supply networks can improve power factor, reduce reactive power losses in power supply networks, improve power supply quality, and have great economic benefits.

. Currently, there are 35kV, 10kV, and 110kV blast furnaces that perform reactive power compensation=“ http://www.ayynd.com/product/21 The power factor of the operation of the ore blast furnacehas been increased above the specified index, avoiding the adverse effects caused by low power factor.. However, when this compensation method is applied to reactive power compensation in mineral heat furnaces, it only improves the power factor of the electric metering point of the mineral heat furnace, but its effect on increasing the output of the mineral heat furnace and reducing energy consumption is not very obvious. There are still some shortcomings in the benefits and performance of reactive power compensation.

Based on the instability of the short network layout of the ore smelting furnace and the large amount of reactive power loss on the short network, as well as the limitations of implementing reactive power compensation on the high or medium voltage side of the furnace transformer, we can draw the following two conclusions:

Choosing a compensation access point near the connection between the short network and the electrode to compensate for the reactive power of the low-voltage short network has great energy-saving potential.

. Due to the unbalanced layout of the short network, implementing phase separation compensation for the low-voltage side short network can change the current situation of strong and weak phases, and the three-phase power is basically balanced.

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