Authors: I.S. Tokarev, Ya.E. Shklyarsky, I.V. Skvortsov, O.S. Vasilkov

Title of the article: An algorithm for selecting the parameters of a supercapacitor as part of an energy storage system of an electrical complex in case of voltage dips

Year: 2024, Issue: 2, Pages: 13-30

Branch of knowledge: 09.05.03 Electrotechnical complexes and systems

Index UDK: 621.313: 621.874

DOI: 10.26730/1816-4528-2024-2-13-30

Abstract: The operation of electrical complexes of industrial enterprises is often characterized by violations of electricity quality indicators, in particular, prolonged changes in voltage characteristics and random events described by strong and spontaneously occurring fluctuations in the shape of the supply voltage. In this article, special attention is paid to voltage dips that occur in the supply network of a liquefied natural gas plant and are the reason for the shutdown of a continuous technological process. The main cause of voltage failures for the selected object of study are atmospheric overvoltages and, as a result, short circuits on the side of external power supply. The paper considers the main methods of leveling voltage dips using both the software tools of the complex and the hardware. As a solution for this object, the installation of an energy storage system based on supercapacitors connected to a direct current link of an electric drive is proposed. The authors have developed a new approach to the selection of these drives, which is based on the revealed mathematical dependencies of the number of supercapacitor units on their nominal capacity and voltage, the influence of the configuration of the connection of the drives inside the system on its final performance, as well as the nominal parameters of the object under consideration and the characteristics of voltage dips. Based on the data obtained, an algorithm for determining a supercapacitor with the required nominal parameters that meet the criteria of technical and economic efficiency for the object under consideration has been formed. In order to achieve the universality of the written algorithm for selecting a storage system based on supercapacitors, experiments were conducted to identify similar mathematical dependencies at different voltage and power levels of electrical complexes.

Key words: electrical engineering complex voltage dips power storage system super capacitor parameters selection algorithm connection configuration

Receiving date: 15.03.2024

Approval date: 15.04.2024

Publication date: 06.06.2024

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