Investment effect evaluation method for county power distribution networks

Abstract

The invention provides an investment effect evaluation method for county power distribution networks, which comprises the following evaluation steps: (1) establishing an index evaluation system and determining evaluation indexes; (2) determining an index evaluation function, and determining the threshold value of each index according to index data statistics; (3) acquiring fundamental data of a power distribution network correlated with evaluation indexes of an area to be evaluated, and verifying the integrity and validity of the fundamental data; (4) normalizing the evaluation indexes; (5) calculating the score of each evaluation index and the comprehensive score of each evaluated area through weighting; and (6) according to the evaluation results, sequencing the investment effects of selected evaluated areas in a descending order, analyzing main indexes influencing the sequencing of investment effects, and for lower-ranking evaluated areas, making an optimizing adjustment strategy. According to the invention, the acquired index data of each evaluated area is subjected to normalized processing by using an evaluation index function, and then the score of each evaluation index and the comprehensive score of each evaluated area are calculated according to a combination weight so as to find out the weak links existing in a power distribution network, thereby quantifying the investment efficiency of a county power distribution network, and providing reference and basis for distribution network planning and decision-making departments.

Description

technical field [0001] The invention belongs to the technical field of risk assessment, and relates to an investment effect evaluation of a distribution network, in particular to a method for evaluating the investment effect of a county distribution network. Background technique [0002] In order to accelerate economic and social development, the expansion and capacity-increasing transformation of the power grid has been fully carried out. The investment of power grid companies in power grid construction has increased year by year, and the success of the investment and the benefits brought by the investment have become common concerns. Compared with the urban distribution network, the county distribution network has the characteristics of outdated power supply equipment, long power supply lines, small power supply load, strong seasonality and large peak-to-valley difference between day and night, and the grid structure is relatively weak. There are problems such as unreasona...

AI Technical Summary

Problems solved by technology

[0004] In terms of investment effect evaluation of county-level distribution network, at present, indicators such as line loss rate, power supply reliability rate, user voltage qualification rate, investment payback period, and internal rate of return are mostly used in China to evaluate the investment effect of county-level distribution network, which has not yet formed a more scientific Perfect Evaluation System

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