Abstract
Time synchronization error between adjacent substations may cause the mal-operation on transmission line protective IEDs. To solve this problem, this paper assumes a situation where time synchronization error occurs between substations due to GPS/Master clock fail, etc., and estimates the changing transmission line constant due to weather, and uses them to estimate the voltage/current phasor of adjacent substations. The estimated voltage/current phasor of adjacent substation are compared with the IEC 61850-based received voltage/current phasor of adjacent substation to estimate the time synchronization error between substations. In this paper, to verify the schemes proposed, the testbed was built with IMU (implemented with AM572X, ADS8688), grand master clock (LANTIME M1000-IMS), network switch (Ruggedcom RSG 2488), RTDS and the target power system was modelled with RSCAD. The results of this research are expected to provide a good guide to constructing the full digital substation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The transactions of The Korean Institute of Electrical Engineers
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
