National Technical University "Kharkiv Polytechnic Institute". Kharkiv (Ukraine)
May 31st, 2018
Summary:
The dissertation is dedicated to the development of optimal principles of electric energy meters' operation and recommendations aimed at improving electricity metering systems by considering low power quality and external factors such as electromagnetic fields. The work demonstrates that deviations in power quality indicators from normalized values can lead to significantly different results in the electricity measurement of electric energy meters of the same nominal power (functional and calibrated) consumed by the same load. The difference in measurements can exceed the sum of allowable meter errors, resulting in significant commercial losses of electricity. A principle and algorithm for digital electric energy meters have been developed, which allows for the most accurate accounting of electricity during deviations in power quality from normalized values. External and internal methods to reduce the impact on electric energy meters have been proposed. An optimal shield has been suggested to protect against the influence of magnetic fields. Promising nanomaterials for current transformers and current and voltage sensors based on the Hall effect have been recommended.
Citation:
I. Diahovchenko (2018), Improvement of power accounting systems by taking into account poor quality and external impacts. National Technical University "Kharkiv Polytechnic Institute". Kharkiv (Ukraine).
