Summary
This paper proposes a long‐term framework for generation expansion and transmission expansion planning taking into account the renewable energy integration. To solve the problem, a hybrid technique is used. The mechanism of this technique is based on decomposing the original problem into master and slave subproblems where the master subproblem is solved using a heuristic optimization algorithm and slave subproblems are solved using general algebraic modeling system, which is a well‐known software with powerful mathematical solvers. The proposed heuristic algorithm is a combination of the intelligent particle swarm optimization and chaotic searching technique. Finally, the proposed model is simulated using 3 case studies including 6‐bus Garver test system, IEEE 24‐bus, and modified IEEE 118‐bus test systems to validate the effectiveness of the long‐term planning framework while the simulation results are compared to those obtained from classic genetic algorithm (GA‐Classic) and classic particle swarm optimization (PSO‐Classic) to verify the efficiency of the technique used in this paper.