Overview

Many distribution utilities adopted a connect-and-forget principle for connection of new distributed energy resources. If reinforcement work of distribution facilities is blindly carried out in order to accept the intermittent DER with the conventional connection scheme, it will cause the cost-ineffective results in distribution system planning for building low carbon power system. Although the quantitative evaluation of non-wire alternatives has been studied for small regions or test distribution networks in literature, it has been less studied in terms of nation-wide distribution networks. We covered the limitation such as the uncertainty and complexity in topology of nation-wide distribution networks and evaluated the benefit of storage as a non-wire alternative by building the two-dimensional distribution network expansion model based on Monte-Carlo simulation.

Executive Summary

DOI: 10.22982/NEXTWP.2022.12.1

Abstract

Many distribution utilities adopted a connect-and-forget principle for connection of new distributed energy resources. If reinforcement work of distribution facilities is blindly carried out in order to accept the intermittent DER with the conventional connection scheme, it will cause the cost-ineffective results in distribution system planning for building low carbon power system. Although the quantitative evaluation of non-wire alternatives has been studied for small regions or test distribution networks in literature, it has been less studied in terms of nation-wide distribution networks. We covered the limitation such as the uncertainty and complexity in topology of nation-wide distribution networks and evaluated the benefit of storage as a non-wire alternative by building the two-dimensional distribution network expansion model based on Monte-Carlo simulation.


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