Identification of generalized linear load in three-phase three-wire network in the problem of the distribution of actual contributions at the point of common coupling

На основе матричного метода анализа электрических цепей определена структура эквивалентной схемы замещения обобщенной нагрузки. Предложен способ приближенного определения параметров эквивалентной схемы замещения обобщенной нагрузки. Выполнен анализ ошибок приближенного определения параметров эквивалентной схемы замещения обобщенной нагрузки применительно к задаче распределения фактических вкладов в точке общего присоединения.Purpose. To perform structural and parametric identification of generalized load equivalent circuit of three-phase three-wire load in the network in the space of phase components. Methodology. Underlying structural identification methods are matrix analysis of electrical circuits. Parametric identification is based on the basic laws of electrical engineering. Results. The structure of a generalized load equivalent circuit is composed in three independent nodes. An approximate method for determining its parameters is proposed. The estimation error determination undistorted and distorted parts of the parameters of generalized load equivalent circuit. Originality. Approximate determination of equivalent circuit parameters are based on the results of a single measurement of voltages and phase currents. Practical value. The proposed replacement structure and a method for determining its parameters of the circuit can be used in the problem of the distribution of actual contributions at the point of common coupling