This paper presents a stochastic optimal operation problem of gas turbine integrated distribution networks in the presence of active management schemes

which is formulated as a multi-objective chance-constrained mixed integer nonlinear programming problem. The control variables are the on-load tap-changer tap position

the power provided by the distributed generation (DG)

the DG power factor angle

the load participating in demand side management and the switch status. The objectives defined in this paper are to simultaneously minimize the expectation cost and variation coefficient of security distance. Uncertainties related to DG output and load fluctuation and fault power restoration under contingencies are also considered in the optimization problem. The collaboration of normal boundary intersection and the dynamic niche differential evolution algorithm is proposed to handle the optimal operation mode. Simulation results are presented and demonstrate the effectiveness of the proposed model. Compared with the operation result without the consideration of security

the security-constrained operation can reduce the expectation cost. Therefore

the proposed optimization is reasonable and valuable.