Probabilistic security assessment for power system operation with significant wind penetration

Integration of wind power generation into the grid makes important impacts on power system planning and operation due to variable nature of the wind power. This paper proposes a probabilistic approach to assess the security of a power system with high wind penetration within operational context. The principal advantage of the proposed probabilistic security assessment approach is that, when compared to the traditional deterministic approach, it takes into account the uncertainties of both wind power generation and power demand. As a result, it provides a better understanding of the system security that may lead to better operational decision-making. A 5-bus test system is used as a case study to illustrate advantages of the proposed probabilistic approach.