An N-1 Short-Time Security Constrained Dispatch for Hybrid AC/DC Power Systems: Chance Constrained Approach

This paper proposes an optimal power flow model for hybrid AC/DC power systems based on chance constrained programming. The safe operation constraint set of hybrid AC/DC power systems is constructed with consideration of both the N-l post-contingency short-time and long-time security operation. Our model is to nearly optimize the expectation of the sum of the weighted generation costs in the normal operation and the post-contingency long-time period. The proposed stochastic model is solved by using the point estimate method and the equivalent formulations of chance constraints. Finally, the effectiveness of the proposed model is validated by investigating different factors such as the uncertainty level.