Development of a methodology for the assessment of the actual contribution of a certain consumer to the distortion of the voltage sinusoid

This article addresses the main reason for the deterioration of the power quality. This is the influence of nonlinear electrical receivers. The developed methods for assessing the actual contribution of the consumers to the distortion of the voltage waveform don’t reflect all the factors influencing on the power quality indicators. That’s why the authors of the article have developed their own assessment methodology excluding previous disadvantages. The idea is based on the determination of the actual contribution of electrical receivers based on continuous measurement of their current-voltage characteristics. The novelty of the method is that the measurement takes place in real time. The results obtained show how the actual contribution to the distortion of the voltage waveform are distributed between consumers at any given time. The modelling results can be used in the operation of the distribution electricity network when a new consumer is connected to it.