Developing a Combined System Model and Simulation Process for Integrated Planning and Operations across Transmission and Distribution Systems, CAPER Enhancement Project

David Lee Lubkeman
Ning Lu

Project runs from 11/01/2019 to 12/31/2020
$66,000

In this project, the team will investigate the ability of performing steady state analysis of distributed energy resources (DER) at both the distribution and transmission levels with a combined model. Currently this analysis is often performed by Duke Energy using Siemens PTI’s PSS®E on the transmission level and using Eaton CYMDIST on the distribution level. The team will evaluate the ability to perform a unified DER analysis involving various types of T&D interconnections and potential interactions using a single simulation software tool(s) for analysis and planning of multiple network types. Given the increasing levels of DER devices seen at the distribution level, it is no longer feasible to perform only a distribution feeder-level analysis. Given the new ride-through and other requirements in the updated IEEE 1547 standard set, it will be necessary to evaluate the impact of transmission-level events to DER interconnections at the distribution-level to evaluate potential loss of DER generation. Also, the increased level of distribution DERs back-feeding into transmission is now impacting transmission-level operation and protection. Analyzing higher-penetration levels of DERs necessitates the need for an integrated analysis using a combined T & D model.