A flexible co-simulation framework for penetration studies of power electronics based renewable sources: A new algorithm for phasor extraction

• Published in: International journal of electrical power & energy systems Vol. 113; pp. 419 - 435
• Main Authors: Theodoro, Thainan S., Tomim, Marcelo A., Barbosa, Pedro G., Lima, Antonio C.S., Correia de Barros, Maria T.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2019
• Subjects: Co-simulation; Electromagnetic transients renewable energy source penetration; Phasor extraction; TCP/IP protocol; Phasor extraction; Electromagnetic transients renewable energy source penetration; Co-simulation; TCP/IP protocol
• ISSN: 0142-0615; 1879-3517
• DOI: 10.1016/j.ijepes.2019.05.047

•Co-simulation of Electromagnetic Transients (time-domain) and Quasi-static Time Series (frequency-domain).•Phasor extraction based on second order generalized integrator (SOGI).•PV penetration on distribution feeders show good accuracy and timings reducing compared to full EMT simulation. This work proposes a co-simulation environment that interfaces the OpenDSS, a frequency-domain program, with a time-domain-based electromagnetic transients software, aiming at performing studies on renewable resources penetration in distribution feeders. Each program handles part of the grid in a parallel manner, exchanging information at only predefined instants during the simulation. For the data exchange between time-domain and frequency-based simulations, the second order generalized integrator structure is used for extracting the phasors. Comparisons with the traditional curve fitting method show improved computational efficiency while keeping reasonable accuracy. Results, presented for the IEEE 13-bus distribution system benchmark operating with three photovoltaic plants, show accurate results obtained 12 times faster than the full time-domain simulation.