Analysis method for planning dynamic load margin based on active power distribution network

The invention discloses an analysis method for planning a dynamic load margin based on an active power distribution network, and the method comprises the following steps: S1, building a network reconstruction model with load balancing as a target, and carrying out the network reconstruction of a power distribution network according to a calculation result of the network reconstruction model; s2, on the basis of network reconstruction of the power distribution network, establishing an openable capacity evaluation model by taking the maximum power supply load of the power distribution network as a target; s3, utilizing a forward-backward substitution method and a generalized gradient method to carry out iterative solution on the openable capacity evaluation model to obtain a high-precision openable capacity evaluation calculation result; and S4, adjusting the power distribution network by using an openable capacity evaluation calculation result so as to achieve an optimal operation state. According to the metho