Maximum loss reduction applying combination of optimal conductor selection and capacitor placement in distribution systems with nonlinear loads

Vahid, Masoud Zahedi; Hossein, Askarian Abyaneh; Kazem, Masoud

doi:10.1109/upec.2008.4651518

Cited by 9 publications

(14 citation statements)

References 8 publications

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“…In [37], [50], [88], the optimization of conductor and capacitor sizes was implemented using GA. This method was applied to the maximum loss reduction problem through CSS and capacitor placement [47]. Its modified version, adaptive GA is used in [100] to select conductors for a network with DGs.…”

Section: Modern Heuristics Algorithms In Cssmentioning

confidence: 99%

Toward Optimal Active Distribution Network Planning: A Critical Review of Conductor Size Selection Methods

Waswa,

Chihota,

Bekker

2023

IEEE Access

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Conductor size selection (CSS) is critical for the optimal design and operation of distribution networks. CSS, like other aspects of network planning, has become increasingly sophisticated as the prevalence of distributed energy resources (DERs) increases. This complexity is linked to DER operational and planning uncertainties, which often exacerbate network issues. Increased uncertainty and uncontrolled DER penetration can result in increased conductor loading and extreme voltage performance concerns (rise, drop, and unbalance) that lower the quality of supply (QoS). Traditional CSS techniques, which were developed for passive systems, do not take DERs into account. Therefore, continued application of these methodologies in CSS for modern networks is untenable. As a result, the shift towards active network design and planning requires new CSS techniques that can enhance the adoption of DERs and facilitate optimal longterm network planning. This paper presents a review of CSS methodologies, focusing on the advances made to accommodate DERs, particularly the adaptation of modeling processes to cater to DER planning and operational uncertainties, and its impacts on other key aspects of CSS. Key CSS processes, including the choice of the CSS objectives, input (loads, generation, and feeder) modeling, load flow assessment, optimization, as well as the incorporation of risk in DER analysis are discussed. Informed by the review, the paper scopes the requirements for a robust CSS methodology for active networks with high DER penetration. The findings of the paper are relevant to future research in the field of active distribution network design with a focus on optimizing the integration and utilization of DERs and the related technical performance of networks.

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Section: Modern Heuristics Algorithms In Cssmentioning

confidence: 99%

Toward Optimal Active Distribution Network Planning: A Critical Review of Conductor Size Selection Methods

Waswa,

Chihota,

Bekker

2023

IEEE Access

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“…With an application of the proposed algorithm, the radial network [6] of 23 kV voltage, which consists of n = 27 nodes and 21 loads, was studied.…”

Section: Test Rezultsmentioning

confidence: 99%

“…In Table II, electrical parameters of network (feeder) [6] are given, where Z -line resistance [nj; S [kV A], PF -total power and power factor of the load node respectively.…”

Section: Test Rezultsmentioning

confidence: 99%

A combined approach to multi-objective optimization of capacitor placement in radial distribution networks

Trach

Zubiuk²

2013

2013 3rd International Conference on Electric Power and Energy Conversion Systems

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A problem of capacitor placement in nodes of radial distribution networks is multi-objective because it has been formulated by using several objectives. The main criteria for capacitor placement and options selection are usually considered as the following functions: minimization of active losses and minimization of investment cost. The problem solution does not always give a positive result in terms of engineering logic, the need to consider imprecision of technical information, specific features of the networks requirements, inadequate pricing in conditions of market economics in transition periods etc. Therefore, an additional third criterion, which is based on the Technical-Coenose approach, is proposed in order to obtain a specific solution for radial distribution network. This criterion requires ensuring maximum compliance of capacitor parameters (such as their conductivities, capacities or power) to the specifically normalized hyperbolic rank-parameter dependence. The proposed combined algorithm uses three mentioned criteria in order to find an acceptable solution in the space solutions formed by method of concessions by making the permissible deviations from the optimal value of each criterion. The proposed method allows to find the vector of ranked capacitor conductivities with specific nonlinear dependence, such as hyperbole. The comparison is made between two approaches: usage of two main criteria and proposed combined algorithm. Calculation procedures are based on the modified version of Particle Swarm Optimization approach. The medium voltage distribution networks with balanced loading and radial configuration with possibility of installation of parallel compensation are considered for analyses. A radial distribution feeder with 27 nodes is used as an example to show the proposed method of capacitor placement. The results show that obtained solutions of shunt capacitor banks placement satisfy the formulated problem and show effectiveness of the prospect of practical purposes applying.

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“…The optimization of the conductor gradation problem and capacitor allocation problem have been solved as one problem recently . The capacitor placement in distribution systems has been extensively researched .…”

Section: Introductionmentioning

confidence: 99%

Optimal conductor selection and capacitor placement in radial distribution system using nonlinear AC load flow equations and dynamic load model

Farrag

Khalil

Omran

2020

Int Trans Electr Energ Syst

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Summary This paper presents a mixed integer nonlinear programming (MINLP) model to solve the conductor gradation optimization problem of radial distribution systems. The conductor size selection and capacitor allocation problem are solved using exact AC load flow equations. The dynamic load characteristics have been considered in this model. The main objective is to realize both the thermal limit constraints and the bus voltage limit constraints. This is done while minimizing the capital cost of the conductors, the capacitors costs, and the energy loss cost of the different conductors. A 117‐bus radial feeder system has been considered to verify the presented nonlinear model.

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Maximum loss reduction applying combination of optimal conductor selection and capacitor placement in distribution systems with nonlinear loads

Cited by 9 publications

References 8 publications

Toward Optimal Active Distribution Network Planning: A Critical Review of Conductor Size Selection Methods

Toward Optimal Active Distribution Network Planning: A Critical Review of Conductor Size Selection Methods

A combined approach to multi-objective optimization of capacitor placement in radial distribution networks

Optimal conductor selection and capacitor placement in radial distribution system using nonlinear AC load flow equations and dynamic load model

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