Integration of Power Flow System Analysis and Geographic Information Systems for Substation Location and Site Analysis

Publication Date


Committee Chair

Karen K. Kemp, Ph.D.

Committee Members

Forrest Jones, M.S.


Geographic Information Systems’ (GIS) influence in the field of large electrical power systems is small but growing. Commonwealth Associates, Inc. (CAI) acknowledged the benefits that GIS had to offer the field of electrical power systems, and they provided this project with data and guidance. In return they hoped for deliverables that will expedite the integration of GIS and electrical substation site analysis. This project will help CAI to reduce the cost and increase the marketability of their software suite, TRANSMISSION 2000®, CAI’s commercial set of power system analysis programs.

This project has two components intended to achieve the goals of the client (CAI). The first component involved creating a process that identifies approximate search regions for CAI employees to use to determine the location of existing substations with unknown latitude and longitude coordinates. CAI’s Power Flow Program stores information that can be used to identify which substations are connected by transmission lines and also provides information that can be used to calculate the approximate distances between connected substations. Search regions for locating substations are calculated based on these estimated distances from connected substations with known latitude and longitude coordinates.

The second component demonstrates an application using the spatial information to locate suitable sites for the development of new substations. The final suitability maps contain data that includes both geographic and Power Flow case data. A vector analysis was performed based on the composed list of suitable criteria. The Buffer and Geoprocessing wizard were used to create the vector analysis suitability maps.

Full text is available at the University of Redlands


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