Real-World Distribution System Modeling Framework for Transmission-and-Distribution Cosimulation: Preprint

Xiangqi Zhu, Michael Emmanuel, Julieta Giraldez, Ibrahim Krad, Wenbo Wang, Bryan Palmintier, Wei-Hann Chen, Alan Hirayama, Marc Asano

Research output: Contribution to conferencePaper


This paper presents a modeling methodology for realistic distribution system simulation and analysis. The methodology involves three major approaches: utility model conversion, feeder load modeling, and feeder model validation. The feeder models obtained from the utility are converted to the format that is more flexible for analysis and algorithm development. The load profiles down to each node are modeled in detail using advanced metering infrastructure data and supervisory control and data acquisition (SCADA) system measured load data. Then the distribution system models are validated by comparing the simulated feeder-head voltage results and SCADA measured voltage data. To better understand the bulk system operations and the interactions between transmission and distribution systems, the modeled realistic distribution systems are integrated into a transmission-and-distribution cosimulation framework to perform the system simulation from the bulk system down to each node in the distribution system.
Original languageAmerican English
Number of pages9
StatePublished - 2020
Event47th IEEE Photovoltaic Specialists Conference (PVSC 47) -
Duration: 15 Jun 202021 Aug 2020


Conference47th IEEE Photovoltaic Specialists Conference (PVSC 47)

NREL Publication Number

  • NREL/CP-5D00-74839


  • load modeling
  • model conversion
  • model validation
  • realistic distribution system
  • T&D cosimulation


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