In view of the difficulty of coordinated control of active and reactive flexible control equipment in active distribution network

a coordinated dynamic optimization method of active and reactive power for active distribution network based on mixed integer second-order cone programming（MISOCP）is proposed.Firstly

a coordinated dynamic optimization model of active and reactive power for active distribution network is established

which includes the operation constraints of active and reactive power flexible control devices.The model is a mixed integer nonlinear programming（MINP）.Secondly

in order to improve the solving speed of the original problem

the MINP model of the original problem is relaxed into the MISOCP model which is easy to get the optimal solution and fast to calculate.Finally

the IEEE 33 node extension system is subject to simulation analysis.It is verified by the simulation result that the active and reactive flexible control equipment in the active distribution network can reduce remarkably the active power loss of the network and is positive for the safe and economic operation of distribution network.MISOCP has not only the same robustness and optimality as that of MINP

but also short calculation time that the latter.