Vladimir BERZAN, PhD (Rep. Moldova), Vladimir PATSIUK, PhD (Rep. Moldova), Galina RYBAKOVA, PhD (Rep. Moldova), Petru POSTOLACHE,PhD
Rezumat
Neomogenitatea circuitelor electrice creaza dificultati la analiza proceselor stationare si dinamice. Urmare a acestui
fapt in solutiile numerice apar componente care fizic nu exista si conduc la diminuarea preciziei solutiilor obtinute. In lucrarea
prezentata s-a popus un procedeu modificat a metodei diferentelor finite pentru calcularea proceselor dinamice in circuitele
neomogene. Solutiile numerice privind derularea procesele in liniile lungi cu parametri distribuiti si concentrati s-au comparat cu cele obtinute cu metoda FDTD. S-a confirmat robustetea si performata procedeului propus de calcul numeric a proceselor
dinamice in liniile neomogene de transport a energiei electrice.
Cuvinte cheie: circuit neomogenmodelaremetoda numericaproces dinamicprecizia solutiei
Abstract
Circuit’s heterogeneity creates difficulties in analyzing stationary and dynamic processes. Following this, the numerical solutions contain components what physical doesn’t exist and lead to lower accuracy of obtained solutions. In this paper a modified procedure of finite difference method for calculating the dynamic processes in heterogeneous circuits was proposed. Numerical solutions regarding running processes in long lines with distributed and concentrated parameters were compared with those obtained by the FDTD method. The robustness and performance of the proposed procedure for numerical computation of
the dynamic processes in heterogeneous electrical transmission lines was proved.
Keywords: nonhomogeneous circuitmodelingnumerical methodsdynamic processsolution accuracy
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