The indices EENS, ECOST, and IEAR can be those specifically for each load point or for the overall system. All of these indices can be used to evaluate the reliability of an existing distribution system and to provide useful planning information regarding improvements to existing systems and the design of new distribution systems.
Moreover, in order to analyze the sensitivity of a reliability index EENS or ECOST with respect to failure rate of different elements, element contributions to that index and their rankings can be used. The rankings can be for a load point or the overall system.
All of the indices and rankings given above can be evaluated using the ETAP Reliability Analysis module.
This module provides you with the best tool to efficiently model various power system elements and devices to include their effects on the distribution system reliability, such as fault isolation and load restoration through the operation of switching devices.
This module is suitable for reliability analysis of large-scale systems of general configurations. By using this module, you can assess the distribution system reliability, and the merits of various reinforcement schemes that are available to the planner can be quantitatively evaluated to ensure that limited capital resources are used to achieve the greatest possible improvement in system reliability.