Zeitschriften- und Konferenzbeiträge
|Title: Evaluation of LTE based Communication for Fast State Estimation in Low Voltage Grids|
|Written by: Fisser, L.; Ipach, H.; Timm-Giel, A.; Becker, C.|
|in: Proc. of IEEE International Conference on Communications, Control, and Computing Technologies for Smart Grids (SmartGridComm) 2020|
Abstract: In this work we investigate the applicability of LongTerm-Evolution (LTE) based communication systems operating in the low Ultra High Frequency range for a fast State Estimation in Low Voltage (LV) grids at high update rates. To estimate the state of the LV grid, the Branch-Current based State Estimation algorithm is modified such that voltage measurements are additionally considered while keeping the complexity low. A detailed LV grid topology and simulation model is then designed and used to find the communication networks performance for operation on 450 MHz and 2100 MHz. The resulting delay and packet loss rate distributions are used to evaluated the state estimation accuracy for different update intervals for a LV grid during a period of high photovoltaic feedin variations. Optimal update rates are identified and further verified by analytical LTE cell load factor calculations. In the spirit of open science, the simulation code as well as the result files are publicly available at the reference provided in the conclusion.