NEW APPROACH TO THE CALCULATION OF ELECTRICAL TRANSIENTS, PART-I - THEORY

The calculation of electrical transients in power systems is important for insulation coordination. Most of the computer programs in current use are based on the nodal admittance method. This paper describes a computer program for the calculation of electrical transients based op t a new approach which enables the use of more sophisticated numerical integration routines. The program can cope with linear network elemen ts like resistors, capacitors, reactors, voltage and current sources a nd also with non-linear network elements like surge arresters and are models. The description of the models and their parameters is stored i n libraries separate from the main program. The user can define his ow n models.