A Construction of an Integrated Support System for Power System Analyses

Abstract

In the operation planning and system planning tasks of a power system, various analysis programs must be used to examine the validity of assumed plans. As you well know, these analysis programs have been supplied by different vendors together with the related computer systems and hence they cannot be used in a particular computer system without adding significant modifications. Although it would be possible to use them on a so-called open system, an extensive amount of works is again needed to realize it.
In this paper, the authors propose a new supporting system in which a variety of analysis programs will be executed on a common platform irrespective of differences in data formats or handling procedures. In the first place, we propose to establish a unified database of a power system, from which a set of data necessary for each analysis program will be extracted. An object-oriented database has been chosen to express the hierarchical nature of a power system. To overcome differences in data formats and handling procedures, API (application program interface) is provided for each analysis program. A user-friendly graphical user interface (GUI) is fully exploited to assist a user to correctly handle analysis programs and to understand results properly. The validity and effectiveness of the proposed approach have been demonstrated by a prototype system.