Speaker
Description
The objective of the presented paper is concentrated on the estimation of short-circuit current in electrical power systems. The most methods of short circuit current evaluation presented in the literature are based on the analysis of numerical grid models. Numerical models comprise whole electrical systems and should be permanently bring up to date. Measurements of real system can append the numerical methods. One of such methods consists on short time short-circuit execution. It is the disturbance method. The method presented in the paper also can be treated as the disturbance method. The short circuit current contains two components - steady state component and transient component. Steady state component can be evaluated by injection to the grid the reactive current. Such method was presented by the authors in the earlier publication. The analysis presented in the presented paper is oriented on the transient component evaluation. The grid parameters are recognized by injection of the current impulse.
