Distribution network model readiness for Advanced Distribution Management Systems

This paper addresses the challenges experienced by many utilities during the implementation of an Advanced Distribution Management System (ADMS), especially with incomplete or inaccurate distribution network model data. The authors would like to share their ADMS experience in the implementation of several large projects in the United States. The paper starts by addressing the importance and key issues related to the accuracy of the distribution network model and how it directly affects the implementation of the ADMS. It is very critical for utilities to conduct a thorough data gap-analysis with their existing Geographic Information System (GIS) data model or the corresponding “system of record”. This step is a critical part of the ADMS solution selection process besides validating the accuracy of the utilities' own GIS network model. The authors have developed a unique distribution network model readiness requirements for advanced distribution application functions such as Automatic Restoration and Switching Analysis (ARSA)/ Fault Localization, Isolation and Service Restoration (FLISR) and Integrated Voltage VAR Control (IVVC). Based on the final data readiness requirements, utilities and the ADMS vendors could agree on a realistic and practical implementation schedule wherein the network model gaps in GIS would be addressed.