Title |
A Study on IEC 61850-Based Time Synchronization Error Estimation between Substations using Estimated Voltage / Current Phasor of Adjacent Substation considering Transmission Line Constants |
Authors |
김민수(Min-Soo Kim) ; 강상희(Sang-Hee Kang) |
DOI |
https://doi.org/10.5370/KIEE.2021.70.4.593 |
Keywords |
IEC 61850; GPS error; Time sync error estimation; TL constants estimation; Voltage/Current estimation |
Abstract |
Time synchronization error between adjacent substations may cause the mal-operation on IEDs. To solve this problem, this paper assumes a situation where time synchronization error occurs between substations due to GPS errors, etc., and estimates the changing transmission line constants 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 |