摘要

The paper presents digital simulators used for the analysis of steady states in the medium voltage power grids and also transient states in the HV/MV substations. The simulator is built of a typical PC equipped with A/D and D/A transducers to enable the simulator to co-operate with automatic power safety systems or control systems and regulations in real time. Original dedicated software has been devised containing mathematical models of power grid components that can be easily modified. Simulations results of some exemplary transient states of the power grid with the distributed generation system were presented.