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

This paper presents a modeling framework for real-world distribution systems to enable large-scale transmission-and-distribution (T&D) cosimulation. The modeling methodology includes three major steps: utility feeder model conversion, feeder load modeling, and 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 profile of each medium-voltage bus is modeled based on the data obtained from advanced metering infrastructure and the supervisory control and data acquisition (SCADA) system. Then the converted feeder models are validated by comparing the simulated feeder-head voltage results to the measured voltage data from SCADA. Last, the modeled real-world large-scale distribution systems are integrated into a T&D cosimulation framework to perform the system simulation from the bulk system down to the medium voltage buses in the distribution system.