An Economical Reconfiguration Method of Distribution Network Considering Network Loss and Reliability

Abstract

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.

Description

technical field [0001] The invention relates to a distribution network economic reconstruction method considering network loss and reliability, and belongs to the technical field of power grid economic evaluation methods. Background technique [0002] The power distribution network is the last link between the power system and the electricity users. The quality of the distribution network operation structure directly affects the quality of power supply. The distribution line is long and has many branches, and the load distribution is uneven. In actual operation, the network loss is often large due to the unreasonable structure. From the perspective of economy, excessive network loss will increase the operating cost of the system; from the perspective of power supply quality, excessive network loss will lead to low user voltage; from the perspective of energy saving and emission reduction, excessive network loss will reduce energy consumption. utilization efficiency. Theref...

AI Technical Summary

Problems solved by technology

However, the long-term statistical results show that a large number of faults that lead to power interruptions occur in the distribution network. Power interruptions have a great impact on the production and life of users, and the economic losses caused are much higher than the network loss costs under normal operation. Therefore, improving the reliability of the network structure should be placed on the same level as reducing the network loss, and the reliability should be fully considered in the process of power distribution network reconstruction.

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