Power distribution network planning method and device considering differentiated reliability requirements

Abstract

The invention relates to a power distribution network planning method and device considering differentiated reliability requirements. The method comprises the following steps: presetting a budget minF of a distribution network wiring planning scheme; obtaining candidate main line wiring by using an ant colony algorithm, using a branch line combination solving method to obtain branch line wiring connecting the load point and the candidate trunk line wiring, and forming a power distribution network wiring planning scheme in a constraint condition range according to the overall wiring formed by the candidate main line wiring and the branch wiring; calculating the comprehensive cost F of the power distribution network wiring planning scheme by using a power distribution network frame planning cost model; simulating a power supply fault by using a sequential Monte Carlo simulation method to calculate the reliability of the power distribution network wiring planning scheme, judging whether the reliability meets a differentiated reliability constraint and an overall reliability constraint, and if not, performing elimination; comparing whether the comprehensive cost F is less than the minF, if so, determining that the minF is equal to the F, otherwise, abandoning; and judging whether the minF converges or not, and if so, outputting a target distribution network wiring planning scheme.

Description

technical field [0001] The present application relates to the field of distribution network planning, in particular to a method and device for distribution network planning considering differentiated reliability requirements. Background technique [0002] Distribution network planning often needs to consider the two major indicators of economy and reliability. However, in order to improve the reliability of distribution network planning, on the one hand, it is inevitable to strengthen the electrical connection of the power grid, which leads to an increase in construction costs and poor economic efficiency; on the other hand, reducing investment and construction costs often leads to Degradation of quality and reliability. Therefore, how to balance the relationship between the two is the focus of distribution network planning research. [0003] In the existing technology, there have been studies on the coordination of reliability and economy, such as "Distribution Network Pl...

AI Technical Summary

Problems solved by technology

However, the above studies are all based on meeting the overall reliability needs of users to find the most economical distribution network planning scheme, but they have not fully explored and considered the differentiated reliability needs of different types of power users, resulting in the planning and construction of some lines. The optimal choice under the current conditions, which increases the construction investment cost

Images