Stochastic dynamic solution for off-design operation optimization of combined cooling, heating, and power systems with energy storage

•Uncertainty, nonlinearity, and storage are all considered in CCHP system operation.•The 24-hour CCHP system operation is modeled as a Gaussian random process.•A stochastic dynamic solution is proposed to solve the optimization problem.•Advantage of proposed method is significant, especially with strong randomness.•The optimality of the proposed method is guaranteed by the principle of optimality.