THE METHOD OF IDENTIFYING CONSUMERS OF ELECTRICITY, GENERATION IN THE PUBLIC
ELECTRICITY SUPPLY DISTURBANCE IN EXCESS OF NORMALIZED VALUES OF INDICATORS OF QUALITY 

Medvedeva Svetlana Nikolaevna, candidate of technical sciences, associate professor, sub-department of electric power and electrical engineering, Penza State University (40 Krasnaya street, Penza, Russia), E-mail: sn-medvedeva@yandex.ru
Chernetsov Mikhail Vladimirovich, candidate of technical sciences, associate professor, sub-department of technical quality management, Penza State Technological University (1а/11 Baydukova avenue / Gagarin street, Penza, Russia), E-mail: oksana_chernecov@mail.ru
Chernetsovа Margarita Mikhailovna, master degree student, Moscow State Technical University named after N. E. Bauman (bld. 1, 5 2nd Baumanskaya street, Moscow, Russia), E-mail: radikal.xxxxx@gmail.com 

621.317.3 

10.21685/2227-8486-2020-2-9 

Subject and goals. The object of the research is the analysis and identification of signs characterizing consumers whose electrical equipment degrades the quality of electricity in general-purpose power supply networks and, as a result, affects the technological processes of production of other consumers connected to this network. The aim of the work is to develop a methodology for identifying violators of the quality of electricity on the basis of analytical research and analysis of the distribution of modules of complex voltages of harmonic components of the spectrum, which characterizes the modes of operation of electrical equipment.
Methods. The studies presented in the work are based on the analysis and generalization of scientific works in the field of methods for increasing the measurement accuracy electrical quantities, methods of the classical theory of electrical circuits, differential and integral calculus, the theory of signal decomposition in the system of basis functions. The research was carried out using the MathCAD software package. Results and
Conclusions. The most complex modes (load change in one and each half-period) of electrical equipment operation are investigated, equations are obtained that describe the harmonic voltages generated during load changes. It is shown that the alternation of the minima and maxima of the amplitudes of the components of the complex voltage of the harmonics of the spectrum does not depend on the phase of switching on the load changes, but only the ratio of the amplitudes of the harmonics changes, which simplifies solving the problem of identifying the intruder. It is shown that the analysis of the complex properties of the spectrum of high-frequency harmonics generated by the consumer load in a generalpurpose power supply network, allows you to confidently identify both the violator of the power consumption mode and the time interval for generating unacceptable interference. 

quality of electricity, identification of the consumer (loads) of electricity from the power supply network, spectrum of high-frequency harmonics, electrical equipment