Smart grid functionalities for improving reliability of rural electricity networks

Rural distribution systems, especially in developing countries, tend to be less reliable than urban distribution systems because customers are (1) located remotely and (2) connected to weak aerial networks with radial topologies without redundancy. To improve reliability in rural areas, microgrids (MGs) are being integrated into conventional power systems. This study evaluates the effect on the reliability of rural distribution systems when MGs are introduced considering different penetration levels for renewable and nonrenewable distributed generation, and under rated power of energy storage. Here, we first formulate a reliability model for a rural distribution system with MGs. Based on this model, an interactive method using a sequential Monte Carlo simulation method is proposed and applied to calculate different conventional reliability indices. We show that this approach facilitates the selection of the parameters of the different systems constituting the MGs in order to comply with a predefined reliability objective. For instance, by introducing only photovoltaic distributed generation systems to the rural distribution systems under study, achieving the reliability objective is next to impossible. However, when correctly dimensioned-hybrid MGs are introduced, such an objective is successfully achieved. In the future, our model and the results provided herein could be combined with technical and economic studies to obtain an optimal solution that meets a certain reliability objective.

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“…The main focus of this study was reliability analysis. Thus, the authors calculated several reliability indices using an analytical method [36].…”

Section: Aensmentioning

confidence: 99%

Reliability Assessment in Rural Distribution Systems With Microgrids: A Computational- Based Approach

et al. 2022

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“…AEL of a DS is a function of loads and can be calculated using load flow for each line section. can be calculated using equation (1). Then AEL can be determined for each line section using equation (2).…”

Section: The System Annual Energy Lossesmentioning

confidence: 99%

“…In today's decision making, under Smart Grid (SG) approaches, system performance is a vital characteristic of the Distribution System (DS) Planning problem and must be combined as part of the objectives when making such significant decision [1].…”

Section: Introductionmentioning

confidence: 99%

A New Distribution System Performance Approach to the Switch Allocation Problem Under Smart Grid Framework

et al. 2018

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This paper proposes a new vision of the Distribution System Switch Allocation problem considering new system performance measures. The mathematical model has been rebuilt with a new aggregated multi-objective formula, minimizing a newly developed performance index while achieving minimum annual energy lost. A new practical weighted combined system performance index, consisting of Reliability, Resiliency and Vulnerability, is applied and tested to be used by utilities replacing the common simple reliability index combination. The new model uses mixed integer design variables to determine the number, location and status of switches. A set of eight logical and technical constraints was applied to provide the best description of the real existing system constraints. A new algorithm of checking the system radial topology is also applied to the problem. The problem was solved using the Genetic Algorithm and was tested on a 54-bus real distribution test system, deemed more complicated than the test systems found in literature, to demonstrate its validity and effectiveness in real life systems.

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New approach in distribution system reliability analysis considering protection system miscoordination

Todorović,

Krstivojević

2023

2023 IEEE Belgrade PowerTech

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Smart grid functionalities for improving reliability of rural electricity networks

Cited by 7 publications

References 0 publications

Reliability Assessment in Rural Distribution Systems With Microgrids: A Computational- Based Approach

Reliability Assessment in Rural Distribution Systems With Microgrids: A Computational- Based Approach

A New Distribution System Performance Approach to the Switch Allocation Problem Under Smart Grid Framework

New approach in distribution system reliability analysis considering protection system miscoordination

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