Abstract
The paper considers the possibility of resonance phenomena in lighting networks with powerful LED lamps and inductive loads. An analysis of the operation of LED lamps at an industrial enterprise was carried out, which showed that the presence of outside active-inductive loads in the lighting network causes accelerated failure of lighting devices, even if energy system meets the standards of electrical energy quality. To study the processes taking place during switching, an algorithm for calculating the operating mode of the lighting network is proposed, which makes it possible to calculate the luminaire operation mode before and after switching other loads. For a LED lamp, oscillograms of current and voltage were taken, an expression was obtained that approximates the I - V characteristic of the LED lamp. Taking into account the I - V characteristic, the changes in the current curve of the lamps before and after the connection of an external inductive load were analyzed: the presence of a gap in the current value at the moment of switching, showed that the transient process can be resonant and cause the accelerated failure of lamps.
Keywords
LED lights, resonance, electrical energy quality.
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