Date(s) - 11 Apr 2018
1:10 PM - 2:00 PM
3043 ECpE Building Addition
Speaker: Ramakrishnan Venkatraman, ECpE Graduate Student
Adviser: Venkataramana Ajjarapu
Title: Combined Transmission-Distribution System (CoTDS) Co-Simulation Modeling and its Applications for Dynamic Studies
Abstract: Combined Transmission and Distribution Systems (CoTDS) simulation requires development of algorithms and software that are numerically stable and at the same time accurately simulate dynamic events that can occur in practical systems. The dynamic behavior of transmission and distribution systems are vastly different. With the increased deployment of distribution generation, especially power electronic inverters, the complexity is further increased. The time scales of simulation can be orders of magnitude apart making the combined simulation extremely challenging. This has led to increased research in applying coupled simulation (also referred to as co-simulation) techniques for integrated simulation of the two systems. In this work, two methods for co-simulation of CoTDS are proposed using parallel and series computation of the transmission system and distribution systems. Both these co-simulation methods are validated against total system simulation in a single time-domain simulation environment. The co-simulation method is then applied to dynamic load modeling with distributed load for determining parameters of the aggregated Western Electricity Co-ordinating Council Composite Load Model. A positive sequence phasor domain model of a Distribution Generation (DG) inverter is developed for further work which is planned to include the effect of DG inverters in CoTDS dynamic studies.