September 15, 2020
Conference Paper

Analysis of the Effect of Communication Latencies on HVDC-Based Damping Control

Dave Schoenwald
Rui Fan
Felipe Wilches-Bernal
Harold Kirkham
Marcelo Elizondo


A wide-area controller to damp inter-area oscillations in the North American Western Interconnection (WI) by modulating power transfers in a HVDC link is used in this paper to investigate the effects that latencies in its feedback signals have on its performance. This controller uses two feedback measurements to perform its control action. The analysis show that the stabilizing effect of the controller in transient stability and small signal stability is compromised as the feedback measurements experience higher delays. The results show that one of the feedback signals can tolerate more delay than the other. The analysis was performed with Bode plots and time domain simulations on a reduced order model of the WI from which a linear version was obtained.

Revised: September 15, 2020 | Published: April 16, 2018


Wilches-Bernal F., D. Schoenwald, R. Fan, M.A. Elizondo, and H. Kirkham. 2018. "Analysis of the Effect of Communication Latencies on HVDC-Based Damping Control." In IEEE/PES Transmission and Distribution Conference and Exposition (T&D 2018), April 16-19, 2018, Denver, CO, 1-9. Piscataway, New Jersey:IEEE. PNNL-SA-128352. doi:10.1109/TDC.2018.8440146