Load characteristics
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Cigarette companies have adopted a large number of silicon rectifier and SCR devices. This leads to a serious reduction in the quality of power distribution. The most serious is the multiple harmonics generated by these devices and the system capacitive reactances and system impedances in the power supply and distribution network form series or parallel resonance under certain parameters, resulting in the destruction of certain equipment in the system. Harmonic harm to the cigarette supply and distribution system has attracted people's attention, harmonic suppression, improve the quality of power supply for distribution has been urgent.
At the same time, cigarette factory production equipment, the use of a large number of inverters, and the inverter is a typical non-linear power supply, resulting in a high current harmonic content of its power supply system, severely increased the power supply line harmonic loss and Endanger the safe operation of other electric equipment. Various departments of cigarette factory awareness of energy saving and pollution control harmonics increasingly clear, so the harmonic control of the power supply system has become a cigarette factory project.
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Governance program
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According to the above analysis, the data analysis of our company on the field test found that the harmonic of the cigarette factory mainly produces a large number of current harmonics from the frequency converter. Therefore, the LDIPF is selected for local and centralized management.
