Open AccessAnalysis of mathematical models of transmission lines.
Author(s) -
G. Sheina
Publication year - 2020
Publication title -
naukovì pracì donecʹkogo nacìonalʹnogo tehnìčnogo unìversitetu. serìâ "elektrotehnìka i energetika"
Language(s) - English
Resource type - Journals
ISSN - 2074-2630
DOI - 10.31474/2074-2630-2020-2-16-19
Subject(s) - electric power transmission , mathematical model , transient (computer programming) , electric power system , overhead (engineering) , power (physics) , power transmission , computer science , transmission line , process (computing) , transmission (telecommunications) , electronic engineering , reliability engineering , control engineering , engineering , electrical engineering , telecommunications , mathematics , statistics , physics , quantum mechanics , operating system
This paper investigates a mathematical model of one elements of the power supply system - power transmission lines. The type of models depends on the initial simplifications, which in turn are determined by the complexity of the physics of processes. The task of improving the accuracy of modeling of emergency processes in the power system is due to the significant complexity of modern power systems and their equipment, high-speed relay protection, automation of emergency management and the introduction of higher-speed switching equipment. One of the reasons for a significant number of serious emergencies in the system is the lack of complete and reliable information for modeling modes in the design and operation of power systems. The development of a mathematical model of a three-phase power line, which provides adequate reflection of both normal and emergency processes, is relevant. The advanced mathematical model of power transmission lines allows to investigate various operational modes of electric networks. The improved mathematical model of the power transmission line reflects all the features of physical processes at state modes and transient process and provides sufficient accuracy of the results. The type of mathematical model of power transmission lines depends on the accepted simplifications, depending on the task of research. The purpose of this work is to analyze the mathematical model of the power transmission line to study the modes of operation of the power supply system, with the possibility of its application to take into account all the design features of overhead and cable power lines. The mathematical model of the power line for the study of the modes of operation of the power supply system is analyzed. It is used to take into account the design features of overhead and cable power lines, skin effect.