Reliability assessment of distribution networks through graph theory, topology similarity and statistical analysis

Xu, Yue; Yu, Tao; Yang, Bo

doi:10.1049/iet-gtd.2018.5520

Cited by 11 publications

(5 citation statements)

References 29 publications

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“…. Since the control relationship between devices is one-way, the correct control chart is a directed chart without loops [6]. To avoid the formation of loops during the formation of computer algorithms, we sort the equipment according to the control relationship to form an ordered equipment set…”

Section: Construction Of Control Relationship Matrix For Electrical E...mentioning

confidence: 99%

The Control Relationship Between the Enterprise’s Electrical Equipment and Mechanical Equipment Based on Graph Theory

Wang

Guo

Rong

et al. 2022

Applied Mathematics and Nonlinear Sciences

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This article proposes a fault component location method based on graph theory and analyzes the properties of the elements in the fault judgment matrix. We can use the exclusive OR algorithm to determine the faulty section. On this basis, the realization model and algorithm essence of the optimal test set is given. At the same time, we propose an optimal test set design for circuit fault diagnosis based on graph theory. Finally, the realization of the article verified that the method adapts to the flexible operation mode of the active distribution network structure and can accurately determine the fault section.

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Section: Construction Of Control Relationship Matrix For Electrical E...mentioning

confidence: 99%

The Control Relationship Between the Enterprise’s Electrical Equipment and Mechanical Equipment Based on Graph Theory

Wang

Guo

Rong

et al. 2022

Applied Mathematics and Nonlinear Sciences

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“…Based on these data and constraints, uGridNet generates optimized pole placement, MV line network layout, LV line network layout, service drop connections to LV line networks, and cost. The cost includes a reliability cost-benefit, motivated by the works of [11], [19], [25]. The uGridNet tool uses network layout with N-1 line loss contingencies to determine lost load from contingencies, from which the lost revenue for the minigrid developer is calculated.…”

Section: Ugrid Net Formulationmentioning

confidence: 99%

uGrid: Reliable Minigrid Design and Planning Toolset for Rural Electrification

Cicilio

Orosz²,

Mueller

et al. 2019

IEEE Access

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A key component of increasing energy access globally is providing rural electrification using off-grid minigrids. Minigrid developers have specific design and planning needs including: (i) equipment sizing and resource allocation, (ii) distribution network layout, and (iii) reliability cost-benefit analysis. Optimization of each aspect is necessary to minimize the cost of electricity for the customer and to maintain a target level of reliability. This work presents an extension of an open-source holistic minigrid design and planning toolset called uGrid, created by the minigrid developer OnePower in Lesotho to perform resource allocation and sizing optimization of energy generation infrastructure based on statistical load estimates. The extension is an improved uGrid with advanced dispatch controls and the newly added uGridNet with distribution network design using Gaussian-mean clustering, network reduction, and N-1 line loss reliability cost-benefit analysis to optimize the network topology considering cost and reliability. A case study is performed using the toolset to design a minigrid for the Ha Makebe village in Lesotho, highlighting pole placement capabilities and changes in network layouts over a range of reliability probabilities. Added costs for reliability range from 18% to 130% for reliability probabilities from 10% to 100%, providing developers with a wide range of options to consider. This combined toolset is designed and packaged to meet the engineering design needs of minigrid developers, with the goal of supporting affordable rural electrification and energy access initiatives worldwide. INDEX TERMS Rural electrification, energy access, minigrid, microgrid, power systems modeling, distribution network, power systems planning.

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“…In Section 3, the GT characterization of PV arrays is exposed, an algorithm is proposed to build all possible configurations of p panels p ∈ [3,7] and simulations are carried out to obtain the power of each PV array, its reliability polynomial (see [22,23]) and the expected value of the power produced. Network reliability has been thoroughly studied for distribution networks, see for instance [24][25][26], but its application to PV arrays constitutes a novelty. Results are presented, explained and discussed in Section 4.…”

Section: Introductionmentioning

confidence: 99%

Graph Theory-Based Characterization and Classification of Household Photovoltaics

2021

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With the clear goal of improving photovoltaic (PV) technology performance towards nearly-zero energy buildings, a graph theory-based model that characterizes photovoltaic panel structures is developed. An algorithm to obtain all possible configurations of a given number of PV panels is presented and the results are exposed for structures using 3 to 7 panels. Two different classifications of all obtained structures are carried out: the first one regarding the maximum power they can produce and the second according to their capability to produce energy under a given probability that the solar panels will fail. Finally, both classifications are considered simultaneously through the expected value of power production. This creates structures that are, at the same time, reliable and efficient in terms of production. The parallel associations turn out to be optimal, but some other less expected configurations prove to be rated high.

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Reliability assessment of distribution networks through graph theory, topology similarity and statistical analysis

Cited by 11 publications

References 29 publications

The Control Relationship Between the Enterprise’s Electrical Equipment and Mechanical Equipment Based on Graph Theory

The Control Relationship Between the Enterprise’s Electrical Equipment and Mechanical Equipment Based on Graph Theory

uGrid: Reliable Minigrid Design and Planning Toolset for Rural Electrification

Graph Theory-Based Characterization and Classification of Household Photovoltaics

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