부산대학교 도서관

The continuous modernization of the electric power grid, including the increased adoption of distributed energy resources and of remotely monitored and controlled devices, has brought about an augmented use of distribution automation and Advanced Distribution Management Systems (ADMS) applications. These tools can help improve grid reliability and ensure optimal grid operation. Several distribution system closed-loop controllers with applications such as Integrated Volt/Var control rely on power flow results to make grid optimization decisions. Hence, the accuracy of the power flow results is of paramount importance for appropriate informed decision-making. This paper presents an analysis of the Distribution Management System (DMS) power flow performance, including a selection of appropriate performance metrics. The selected performance metrics are used to detect and analyze inaccuracies in DMS power flow results. The investigation is carried out on near-real-time power flow results from multiple substations obtained from a utility company. The substation models and SCADA measurements were also used in the analysis. It is envisioned that this power flow performance analysis can help guide further studies to identify causes of poor power flow performance and mitigate them.