Power distribution network planning method based on maximum power supply capacity

Abstract

The invention relates to a power distribution network planning method based on maximum power supply capacity, which comprises the following steps of: obtaining status quo power grid data and load forecast data; judging whether the distance between a new load and an existing substation is longer than a first threshold value; if the distance between the new load and the existing substation is more than the first threshold value, which indicates a blind area for power supply exists, taking Class C measures, and establishing a new substation; otherwise, calculating the maximum power supply capacity of the existing power grid; when the maximum power supply capacity is higher than the planned total load, the load of each main transformer is matched with the maximum power supply capacity and each load horizontally meets the requirements of safety verification of the main transformers N-1, stopping the process, otherwise, taking Class B and C measures to adjust the total power supply capacity; or taking Class A measures to adjust the distribution of loads among the main transformers. By adopting the method, the dependence on capacity-load ratio indicators can be reduced, the potential of the existing network can be fully utilized, the construction of power grids can be postponed, and the problems of land shortage and high cost for construction of power grids can be solved; and the allocation scheme of loads matched with the allocation of the maximum power supply capacity can be provided to achieve the purpose of fully utilizing the power supply capacity of the power grids.

Description

technical field [0001] The invention relates to the field of power distribution systems, in particular to a distribution network planning method based on maximum power supply capacity. Background technique [0002] my country has experienced more than ten years of large-scale urban and rural power grid planning and construction, and traditional planning based on the steps of status analysis, load forecasting, substation and network planning has played an important role. For the distribution network areas that have been built so far, the load density is high and the load growth is slow, and the traditional planning methods are facing challenges. [0003] The advantage of the traditional planning method lies in the medium and long-term target network structure planning, which is more suitable for the rapid development of distribution network and new districts. For the distribution network that has been basically developed, the traditional distribution network planning has the...

AI Technical Summary

Problems solved by technology

[0010] The invention provides a distribution network planning method based on the maximum power supply capacity. The invention fully exploits the potential of the existing network, fully utilizes the existing network to accommodate new loads, improves the asset efficiency of the power grid, and solves the problem of land shortage and For issues with higher costs, see the description below:

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