Power distribution network automatic construction investment benefit evaluation method

Abstract

The invention provides a power distribution network automatic construction investment benefit evaluation method, which comprises the steps of firstly selecting a power distribution network automatic construction investment index and a reliability core index; then performing 0-1 standardization or range standardization of the automatic construction investment index and the reliability index based on historical automatic construction investment and power outage data, so as to construct a difference type increment index and a ratio type increment index; performing pairing screening of a reliability index and automatic investment index combination based on a Pearson correlation coefficient and a Kendall rank correlation coefficient; and determining a final reliability index and automatic investment index pool; constructing an association model of an automatic investment index and a power outage reliability index through improved linear regression; then finally obtaining an automatic investment index version combination significantly influencing the reliability index by means of a goodness-of-fit coefficient and a significance weight coefficient of the improved linear regression, and obtaining a weight coefficient of the reliability index improvement degree of the automatic investment project.

Description

technical field [0001] The invention relates to the field of distribution network automation investment evaluation in electric power systems, and more specifically, relates to a distribution network automation construction investment benefit evaluation method. Background technique [0002] The investment and construction of distribution network automation is one of the core contents of building a smart grid, and it is also an important measure to improve the reliability of power supply and ensure the electricity demand of industries and residents. With the continuous increase of investment in automation projects, objective and reasonable evaluation of the benefits generated by automation investment projects is an important part of the work to promote the development of grid automation construction in a scientific, environmentally friendly and sustainable direction. Through the reliability-based benefit evaluation of distribution network automation investment, it is possible ...

AI Technical Summary

Problems solved by technology

The main methods used are analytic hierarchy process, expert scoring method, etc., but some methods involve many automatic index systems, the objectivity of the methods used is lacking, and the evaluation results may be distorted or not robust; some methods use expert opinions , try to avoid more subjective evaluation criteria, but it will still be affected by the knowledge, experience, and preferences of experts, and has greater contingency; in general, the existing methods are insufficient for the use of historical data of automation construction investment, especially for reliability. It is due to the lack of attention paid to the time of user failure and power outage, and it is difficult to obtain a specific evaluation model that is targeted and scalable

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