Incremental Losses in Autonomous Power Supply Systems with Static Converters

Abstract

A technique is developed for determining additional losses from higher harmonics of the voltage of energy in autonomous electric power systems with static converters. The distortion of the sinusoidal voltage, characterized by the spectrum of higher harmonics, depends on a number of main factors: the structure, composition and parameters of the elements of the system, including linear and nonlinear elements. At the design and operation stages of systems with converters, it is important to have simple calculation techniques that allow a clear assessment of the magnitude of the additional losses in each of these elements. Accurate and complex techniques due to the uncertainty of the source data do not always guarantee more reliable results. A technique is proposed for constructing a calculation model based on substitution schemes and introducing into the calculations the coefficient of additional losses, determined on the basis of the use of the Riemann zeta-function.