The paper presents botb. an and assessm.ent method, fully computerized, concerning the standard of one power network safety in- operation assumed as a whole unit during the interconnected operation.
For the accuracy of the safety in operation approach, it has been considered a hierarchical classification of (lie installation, as follows:
1. The unitary energy system network
2. The zonal network
3.connecting network of the customer to N.E.S.
Finally the programs utilized and their characteristics are showed.