Based on Markov model theory, a quantitative analysis method is proposed to assess the safety of distributed interlock function of digital substation as a supplement to the qualitative methods.

• 针对现有定性评价分布式联锁功能安全性方法的不足，应用马尔科夫模型理论，提出了定量分析数字化变电站分布式联锁功能安全性的方法。