The realization for on-line examination system of relay protection in power system

Reference construction program for on-line examination of relay protection in power system of Qinghai Electric Power Corporation, and combined with relevant research data and results, the paper discussed the different realizations for on-line examination of relay protection in power system, and compare on the data sources and functions realization in particular for different programs. This paper also proposed the technical difficulties for on-line examination of relay protection in power system and given viable solutions.