Abstract
The requirements for reliable power supply in the power supply system determines the need to study the modes of operation of electrical systems with the problem of damage to power lines due to ferroresonance phenomena. In this regard, an effective method is proposed for the analysis of ferroresonance arising in electrical lines between inductors and capacities using generalized models of passive nonlinear elements. The method of analysis makes it possible to obtain qualitatively new and sufficiently accurate analytical expressions for calculating the electromagnetic modes of ferroresonance.
Highlights
Requirements for reliable power supply to consumers determine the need to study the operating modes of electrical systems that lead to damage to electrical equipment and disruption of power supply
In the electric power industry, ferroresonance phenomena (FP) occurs in electrical networks during the formation of circuits with electromagnetic transformers (EMT) and network capacities, characterized by long-term overvoltages and current overloads of voltage transformer windings due to abrupt saturation of the transformer magnetic circuits
The problem of analyzing FP in electrical networks requires the creation of qualitatively new mathematical models and analytical equations, which allow obtaining sufficiently accurate analytical expressions for calculating the electromagnetic modes of ferroresonance
Summary
Requirements for reliable power supply to consumers determine the need to study the operating modes of electrical systems that lead to damage to electrical equipment and disruption of power supply. It is argued that the most frequent causes of damage to electrical equipment are ferroresonance between the network capacity and the inductance of the power step-down transformer [1]. In the electric power industry, FP occurs in electrical networks during the formation of circuits with electromagnetic transformers (EMT) and network capacities, characterized by long-term overvoltages and current overloads of voltage transformer windings due to abrupt saturation of the transformer magnetic circuits. Overvoltages arising in this case are dangerous for measuring equipment and protection means of power equipment. The problem of analyzing FP in electrical networks requires the creation of qualitatively new mathematical models and analytical equations, which allow obtaining sufficiently accurate analytical expressions for calculating the electromagnetic modes of ferroresonance
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