The invention discloses a power distribution network economy reconstructing method considering network loss and reliability. The power distribution network economy reconstructing method considering the network loss and reliability includes an economy optimizing model for summing based on
power loss cost due to network loss and
power loss cost due to deficiency of power supply amount under a power failure state, an object-oriented power distribution network reliability calculating method matched with the model, a power distribution network economy reconstructing model calculation method based on a
biogeography algorithm, and power distribution network economy reconstructing steps based on the core content of the three parts, wherein the power distribution network reliability calculating method includes element collection class, block class, block class tree and power supply
route determination methods, and the power distribution network economy reconstructing model calculation method includes the construction of residential suitability indexes,
habitat characteristic vectors, transport models and the like. The power distribution network economy reconstructing method considering the network loss and reliability combines the yearly demand not supplied due to the network
electricity interruption and the yearly
power loss due to the network loss to construct the power distribution network economy reconstructing model which simultaneously considers the power distribution network reliability and network loss, and the model has visual economy characteristics and strives to obtain the most economical
network structure. The power distribution network economy reconstructing method considering the network loss and reliability is suitable for reconstructing the power distribution network economy.