The invention relates to the technical field of power
system optimization, in particular to a multi-time-scale-considered main-distribution cooperative integrated optimization
planning method and
system, and the method comprises the steps: building a main and distribution network
resource planning framework, considering a multi-time-scale operation
simulation method, analyzing the power generation capability of
new energy in different time periods, and calculating the power generation capability of the
new energy in different time periods. Multi-time scale output prediction is carried out; based on multi-time-scale output prediction, in combination with
power grid load,
system constraint and equipment capability, setting an optimization objective function and constraint conditions, and constructing a main and distribution network collaborative planning model; and solving the main and distribution network collaborative planning model by using a
particle swarm algorithm to obtain the optimal capacity configuration, and determining the optimal installation position and capacity of the
new energy. According to the method, the output characteristics of the
renewable energy sources and the load change of the
power grid in different time periods are accurately analyzed, and coordinated optimization of multiple types of resources in the main and
distribution networks is realized, so that the stability and the economical efficiency of a power system are effectively improved, and the calculation efficiency of an
algorithm is improved.