The design of redundant network architecture plays an important role in improving the reliability of digital substation. According to the entire substation automation system, the paper analyzes the typical redundant architecture in the digital substation based on IEC61850, and proposes the feasible improvement schemes with centralized backup pattern and crossover backup pattern. The real-time performance of various redundant schemes are analysed and their economy is compared and a quantitative evaluation of the reliability is conducted by fault tree analysis (FTA). The results show that the im...
