Toward Fast Calculation of Probabilistic Optimal Power Flow

With the rapid growth of renewables, probabilistic optimal power flow (POPF) has become an important tool to analyze uncertainties in power systems. However, POPF calculation involves repeatedly solving the optimization problem. The computational efficiency has been a major bottleneck for its practical application in power industries. This letter proposes a novel method to significantly improve the efficiency of POPF calculation while maintaining the desired accuracy. The IEEE 30-bus, IEEE 118-bus, and practical utility 661-bus systems are used to demonstrate the effectiveness of the proposed method.