Comprehensive efficiency evaluation model for electrical distribution system considering social and urban factors

Dashti, Reza; Yousefi, Shaghayegh; Moghaddam, Mohsen Parsa

doi:10.1016/j.energy.2013.07.042

Cited by 24 publications

(3 citation statements)

References 39 publications

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“…Simultaneous detection of fault section considering specific topology of distribution networks is very important. In the following, algorithms proposed in [14] and [15] which require monitoring so that network operator can monitor and analyze and determine fault location after applying operational condition using GIS. Parallel transmission lines in power networks are described using a significant increase in mutual coupling.…”

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confidence: 99%

Real Fault Section Estimation in Electrical Distribution Networks Based on the Fault Frequency Component Analysis

et al. 2019

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: Fault location in electrical energy distribution networks is an important task, as faults in distribution grids are among the main causes of electricity supply disruption. Fault location in the distribution systems, however, is a challenging task because of the topology of the distribution networks, as well as the main and side branches. Therefore, it is necessary to address these challenges through an intelligent approach to fault location. In this paper, fault location in electric energy distribution networks is addressed considering the changes in fault distance and fault resistance in the presence of different fault types. A new method for fault location is developed for conditions where the minimum information is available and only information at the beginning of the feeder is used. This facilitates wide adoption of the technique as it does not require significant investments in instrumentation and measurement. The proposed intelligent method is based on the impedance and transient state estimation. This technique employs a specific impedance analysis for determining possible fault locations considering the unbalanced performance of distribution systems, distances, and different fault resistances. To determine the real faulty section, real fault frequency component analysis and the simulated faults at possible fault locations are used. At this stage of the process, it is possible to eliminate multiple estimations with the help of comparison and identification of the similarities. Therefore, a real faulty section is determined. It is observed that some conditions of electric energy distribution networks affect the accuracy and performance of the proposed method significantly; thus, a detailed investigation is conducted to neutralize these conditions. Simulation results and calculations based on MATLAB along with a practical test of the proposed method in power network simulator confirm a satisfactory performance.

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confidence: 99%

Real Fault Section Estimation in Electrical Distribution Networks Based on the Fault Frequency Component Analysis

et al. 2019

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“…This index shows that the overall of electrical distribution utility has an economical viewpoint in the proper utilization of components to supply the customer services (Dashti et al, 2013). Therefore, distribution network operators need to calculate network losses for various purposes, such as assessing the network efficiency; reducing the network losses; calculating the nontechnical losses and decision making about the operation with the optimal configuration (Ababei and Kavasseri, 2011;Yongping, 2011;Monedero et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Management of Effective Factors in Components’ Supply Chain on Losses of Electric Distribution System

Honarmand¹,

Ghazizadeh²,

Kermanshah³

2018

American Journal of Applied Sciences

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Restructuring in the electrical distribution utilities, the loss management is one of the critical activities to enhance network efficiency. Accordingly, management of technical loss would be the main target of the asset managers. For loss management, the usual methods of loss calculation and estimation need numerous data which is not used to real networks. In this research, a practical method for loss management is introduced from the viewpoint of components' supply chain to the network. For this purpose, sub-indictors are extracted using focus group for each process of this chain and their probability distribution functions are calculated. Then, permissible values of subindicators are determined by the Delphi method and to calculate new probability functions, the deviation of each process is calculated. Finally, a real network with historical data is used here to study the proposed method. The results illustrate that the most deviation is in the sub-indicator design process about 91% in the viewpoint losses.

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“…How can we analyze the comprehensive benefit of urban distribution network planning quantitatively? The traditional assessment of an urban distribution network planning project has been mainly the individual evaluations, including reliability [1][2][3][4][5][6], safety [7], power quality [8], risk [9], and efficiency [10]. These studies tend to evaluate the technical level of the power distribution and subjectivity in terms of determining the weight, which previously affected the evaluation of the benefit of the power distribution network planning project, are all resolved.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive Benefit Evaluation of the Power Distribution Network Planning Project Based on Improved IAHP and Multi-Level Extension Assessment Method

Peng

2016

Sustainability

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Reasonable distribution network planning is an essential prerequisite of the economics and security of the future power grid. The comprehensive benefit evaluation of a distribution network planning project can make significant contributions towards guiding decisions during the planning scheme, the optimization of the distribution network structure, and the rational use of resources. In this paper, in light of the characteristics of the power distribution network, the comprehensive benefit evaluation index system is constructed considering the influencing factors of technical benefit, economic benefit, and social benefit. To eliminate the influence of subjective factors on the evaluation effects and the uncertainty of the influencing factors effectively, the improved interval analytic hierarchy process is employed to calculate the index weights more simply. Moreover, based on the traditional single-factor extension evaluation, this study proposes a multi-level extension assessment model to evaluate the comprehensive benefit of the power distribution network planning project. The model can not only identify the key factors that affect the evaluation effect of the power distribution network planning project, but also can predict the overall development trend of the project. Finally, using a specific urban distribution network planning project as an example, the findings indicate that the comprehensive benefit grade of this power distribution network planning project is "better" due to the benefit grade variable eigenvalue j * ∈ [3.33, 3.418] ∈ [3, 4], and illustrates that the model is credible and practical to achieve the comprehensive benefit evaluation of the power distribution network planning project.

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Comprehensive efficiency evaluation model for electrical distribution system considering social and urban factors

Cited by 24 publications

References 39 publications

Real Fault Section Estimation in Electrical Distribution Networks Based on the Fault Frequency Component Analysis

Real Fault Section Estimation in Electrical Distribution Networks Based on the Fault Frequency Component Analysis

Management of Effective Factors in Components’ Supply Chain on Losses of Electric Distribution System

Comprehensive Benefit Evaluation of the Power Distribution Network Planning Project Based on Improved IAHP and Multi-Level Extension Assessment Method

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