REVIEW OF THE CURRENT STATE OF LEGISLATIVE REGULATION, TECHNOLOGIES AND MEASURING EQUIPMENT IN THE FIELD OF ELECTRICITY QUALITY MEASUREMENT

Abstract

The quality of electricity is currently a rather urgent issue, as the constant growth in the number of nonlinear elements and the transition to renewable energy sources cause its strong distortion. On the other hand, maintaining a high level of power quality can significantly increase the level of energy efficiency and ensure the stable operation of microprocessor-based devices, including computing equipment. But to ensure this, it is necessary to develop and apply high-quality measuring instruments that use accurate measurement methods. This publication deals specifically with the legislative regulation in the field of electricity quality in both Ukraine and the European Union. The dependence of the existing standards on each other is determined and the main classifications by which measuring instruments are evaluated are presented. Based on the existing standards, the author analyzes the existing scientific works, which pointed to problems with the calibration and use of measuring instruments in the context of constantly changing requirements for electricity quality indicators. At the same time, the need to develop methods for determining the impact of renewable energy sources, including photovoltaic systems, on the quality of electricity is noted. For the first time, a review of existing measuring instruments designed to determine the quality of electricity was carried out. Based on the results of this review, a structured table was formed comparing the 10 most common measuring instruments for more than 10 indicators. Among them, there is a part responsible for compliance with the requirements of standards and a part that allows comparing performance and the availability of important additional functionality. The review also allowed us to formulate a number of questions, the answer to which will significantly simplify the process of selecting measuring instruments and reduce costs. In particular, in accordance with the identified issues, the best power quality analyzers were selected to study the impact of photovoltaic systems on the established indicators of power quality.