A comprehensive evaluation method based on the impact of distributed power access on distribution network

Abstract

The invention discloses a comprehensive assessment method based on the effect of a distribution type electrical connection on a power distribution network. The comprehensive assessment method is characterized in that a comprehensive assessment index system of the effect of the distribution type electrical connection on the power distribution network, three-level index values under different distribution type electrical connection schemes are worked out by analyzing the power distribution network including a distribution type power source, a standard decision matrix of an assessment index is established, the weight coefficients of a one-level index, a two-level index and a three-level index are respectively obtained, accordingly, the comprehensive weight coefficient is determined, the comprehensive assessment satisfaction degrees of different distribution type electrical connection schemes are finally worked out, and the scheme with the largest comprehensive assessment satisfaction degree serves as the optimal distribution type electrical connection scheme. The comprehensive assessment method avoids the insufficient data information amount probably occurring through the single utilization of the object analysis method and also avoids the subject randomness of direct utilization the subject analysis method, and complex links of detecting and judging the matrix consistency are reduced while the judging fuzziness of people is taken into consideration.

Description

technical field [0001] The invention relates to the field of distribution network planning evaluation, in particular to a comprehensive evaluation method based on the impact of distributed power access on distribution networks. Background technique [0002] With the increasing pressure of environmental protection and the increasing demand for energy, the development of distributed power has become the focus of attention from all walks of life. The access of distributed power makes the traditional distribution network into a distribution network with multiple power sources covering small and medium-sized power sources and loads. The increase in the penetration rate of distributed power makes the distribution network with distributed power stable. And the qualitative change of the dynamic characteristics will bring many impacts on the economy, reliability and power quality of the distribution network with distributed generation. With the different access points and access cap...

AI Technical Summary

Problems solved by technology

[0003] The impact of distributed power access on the distribution network is a wide-ranging and complex issue. Most of the existing research evaluates the impact of distributed A comprehensive assessment of the impact of access to the distribution network (including economics, reliability, and power quality, etc.) is lacking, and there is a lack of comprehensive assessment methods for the impact of distributed power access on the distribution network, and human judgment is rarely considered in the assessment process Fuzziness, the construction of the judgment matrix is ​​cumbersome, and the determination of the weight coefficients of different evaluation indicators is not perfect

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