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Optimal AC Distribution Systems Reconfiguration

Hassan L. Hijazi, Sylvie Thiebaux
2014 2014 Power Systems Computation Conference  
This leads to an approach producing AC feasible solutions with provable optimality gaps, and to global optimal solutions in some cases.  ...  This is achieved by extending the relaxations of AC power flows to bear on the on/off nature of constraints featured in reconfiguration problems.  ...  Radial Distribution Networks Distribution systems have a meshed structure, but are often exploited radially.  ... 
doi:10.1109/pscc.2014.7038420 dblp:conf/pscc/HijaziT14 fatcat:hl3uey4dgrevffi4rovk367req

On the optimal reconfiguration of radial AC distribution networks using an MINLP formulation: A GAMS-based approach

Oscar Danilo Montoya, Walter Julián Gil González, Luis Fernando Grisales-Noreña, Diego Giral, Alexander Molina-Cabrera
2021 Ingeniería e Investigación  
This paper deals with the problem of the optimal reconfiguration of medium voltage distribution networks by proposing a mixed-integer nonlinear programming (MINLP) model.  ...  The solution of the MINLP model is reached through the general algebraic modeling system widely know as GAMS package by presenting it in a tutorial form.  ...  State of the art The problem of the optimal reconfiguration of AC distribution feeders is a classical optimization problem in power systems analysis (Civanlar et al., 1988) .  ... 
doi:10.15446/ing.investig.91192 fatcat:faxbdb4yhbdphbwx5jvfsxjccu

Reconfigurable DC Links for Restructuring Existing Medium Voltage AC Distribution Grids

Aditya Shekhar, Laura Ramírez-Elizondo, Xianyong Feng, Epaminondas Kontos, Pavol Bauer
2017 Electric power components and systems  
the existing mature AC system.  ...  for system level distribution loss minimization and load redistribution, and fault reconfiguration for improving the grid availability are discussed.  ...  We would like to thank the distribution network operators from Dutch utility companies like Alliander, Enexis and Stedin for helping us understand the challenges in designing the evolving grids of the  ... 
doi:10.1080/15325008.2017.1346005 fatcat:gtndc2hav5h3bahvd6r6ppnh4a

Ant colony system algorithm for optimal network reconfiguration

Shabana Mehfuz, Farah Rashid
2014 International Journal of Computational Intelligence Systems  
The results found are satisfactory and prove ant colony system algorithm to be an efficient tool for optimal network reconfiguration.  ...  Network reconfiguration of a power distribution system is an operation to alter the topological structure of distribution feeders by changing open/closed status of sectionalizing and tie switches.  ...  Conclusion A new methodology, based upon the Ant Colony System (ACS) algorithm, is proposed for the reconfiguration of electric energy distribution systems.  ... 
doi:10.1080/18756891.2014.960235 fatcat:qe3rrffjnrhahmpvk2gvyjv5zm

CARUSO - Project Goals and Principal Approach

Uwe Brinkschulte, Jürgen Becker, Klaus Dorfmüller-Ulhaas, Ralf König, Sascha Uhrig, Theo Ungerer
2004 Jahrestagung der Gesellschaft für Informatik  
The requirements shall be fulfilled by a multithreaded processor core within a reconfigurable SoC.  ...  threads running with low priority in own thread slots concurrent to the application implement autonomic/organic managers that monitor the application and decide if selfconfiguration, self-healing, self-optimization  ...  In general, middleware will become a key component to realize AC/OC principles in a highly distributed system.  ... 
dblp:conf/gi/BrinkschulteBDKUU04 fatcat:pdqfhm4btza5dhabymg23eidni

Flexible Interconnected Distribution Network with Embedded DC System and Its Dynamic Reconfiguration

Huan Cai, Xufeng Yuan, Wei Xiong, Huajun Zheng, Yutao Xu, Yongxiang Cai, Jiumu Zhong
2022 Energies  
Therefore, a new topology of flexible interconnected distribution network with embedded DC system (FDN+EDC) with a better economy is proposed.  ...  Secondly, in order to realize the coordinated optimal economic operation of source, network and load in the FDN+EDC, a dynamic reconfiguration model of switches status and continuous adjustment of flexible  ...  Objective Function For the economical, safe, and stable operation of the system, this paper takes the minimum active power loss and AC node voltage offset of the distribution network as the optimization  ... 
doi:10.3390/en15155589 fatcat:4yoey4ctvrhhlnchsau7so7yce

Two-Stage Research on AC/DC Hybrid High-Voltage Distribution Network Based on Network Reconfiguration and SOP Coordinated Control

Xuefeng Bai, Yan Zhang, Chang Xu, Zhuyu Zhao, Jun Wang, Yaxiang Fan
2022 Journal of Sensors  
Large-scale distributed energy access is an important feature of future distribution system.  ...  Aiming at the AC-DC hybrid distribution system with soft tie-in switch and voltage source converter, considering the network congestion caused by large-scale access of distributed energy, a two-stage congestion  ...  Figure 3 :Figure 4 : 34 Figure 3: Distribution of node voltage before and after reconfiguration of IEEE 33-node distribution system.  ... 
doi:10.1155/2022/2401475 fatcat:inyid7enijcdtbwtrwls3wblsq

A Mixed-Integer Nonlinear Programming Model for Optimal Reconfiguration of DC Distribution Feeders

O. D. Montoya, W. Gil-González, J. C. Hernández, D. A. Giral-Ramírez, A. Medina-Quesada
2020 Energies  
This paper deals with the optimal reconfiguration problem of DC distribution networks by proposing a new mixed-integer nonlinear programming (MINLP) formulation.  ...  These are typically used for power flow and optimal power flow analyses. Numerical results demonstrate that power losses are reduced by about 16% when the optimal reconfiguration plan is found.  ...  possibility of extending the proposed MINLP model to electrical networks that combines AC and DC feeders to offer optimal reconfiguration plans in modern hybrid distribution systems.  ... 
doi:10.3390/en13174440 fatcat:2qyxz4yw5jdhbc57rmmancxlye

INVESTIGATION OF A SILICON-BASED HIGH INTEGRATION RECONFIGURABLE DIPOLE

Han Su, Huiyong Hu, Heming Zhang, Yuanhao Miao
2018 Progress In Electromagnetics Research Letters  
This antenna was fabricated on a high resistivity silicon wafer, and several optimized band stop filters were introduced into antenna system to replace conventional inductors and capacitors.  ...  On the basis of structural optimization, the proposed reconfigurable dipole realized two resonant frequencies at 1.33 GHz and 1.65 GHz, and the radiation patterns also showed satisfactory results.  ...  These filters can pass a direct current while suppressing the required AC signals, and the stopband frequency (S 11 > −2 dB and S 21 < −20 dB) should be optimized to cover the reconfigurable dipole's operating  ... 
doi:10.2528/pierl18071701 fatcat:tfkzra6cfbcztpruvjzqd64psi

Reliability, Efficiency and Cost Trade-offs for Medium Voltage Distribution Network Expansion using Refurbished AC-DC Reconfigurable Links

Aditya Shekhar, Laura Ramirez-Elizondo, Pavol Bauer
2018 2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM)  
The distribution network operators (DNOs) can maximize the power transfer capacity of existing grid infrastructure during (n-1) contingencies using reconfigurable parallel ac-dc architecture.  ...  The object of this paper is to present a discussion on the emerging choices involved in adopting a parallel ac-dc reconfigurable link architecture in designing future and flexible power grids.  ...  The system requires neither ac to dc nor dc to ac reconfiguration. Minimum converter rating of 0.5 p.u is required for the system.  ... 
doi:10.1109/speedam.2018.8445361 fatcat:xbr4bnhfcjdapf7mpipwqmmdry

A Two-stage Optimal Network Reconfiguration Approach for Minimizing Energy Loss of Distribution Networks Using Particle Swarm Optimization Algorithm

Wei-Tzer Huang, Tsai-Hsiang Chen, Hong-Ting Chen, Jhih-Siang Yang, Kuo-Lung Lian, Yung-Ruei Chang, Yih-Der Lee, Yuan-Hsiang Ho
2015 Energies  
This study aimed to minimize energy losses in traditional distribution networks and microgrids through a network reconfiguration and phase balancing approach.  ...  A minimizing energy loss approach is developed for network reconfiguration and phase balancing, and the particle swarm optimization (PSO) algorithm is adopted to solve this optimal combination problem.  ...  Figure 10 . 10 Optimal network reconfiguration function in energy management system (EMS) of the INER microgrid.  ... 
doi:10.3390/en81212402 fatcat:7ehwyic5vvbmzlexvuz4hahzxq

Reconfigurable solar photovoltaic systems: A review

K.A.Himali Lakshika, M.A.Kalhan Sandaru Boralessa, Manoja Kaushali Perera, Darshana Prasad Wadduwage, Vasudevan Saravanan, K.T.Manjula Udayanga Hemapala
2020 Heliyon  
The review explains the applications of reconfigurable approaches on solar PV systems such as reconfigurable PV arrays, power conditioning unit (DC/DC converter, DC/AC inverter), microgrid controller and  ...  An analysis is also presented considering the unique features of reconfigurable systems in comparison to the static systems.  ...  Recently, a new robust optimization technique has been introduced to reconfigure distribution feeders into multiple microgrids for optimum microgrid planning under system uncertainties [4] .  ... 
doi:10.1016/j.heliyon.2020.e05530 pmid:33294678 pmcid:PMC7683345 fatcat:magy2ypcr5ewhkvjguo7uwpeay

A High-Integration On-Chip Reconfigurable Monopole

Han Su
2021 IEICE Electronics Express  
To further improve the antenna's integration, an optimized band stop filter is introduced into the antenna system to replace the conventional capacitor and inductor, and measurement results confirm the  ...  In this paper, a silicon-based high-integration frequency reconfigurable monopole is designed.  ...  To further improve the integration of antenna system, an optimized band stop filter is introduced to isolate the AC signals.  ... 
doi:10.1587/elex.18.20210462 fatcat:4tmpnxr2efgm7eoonfyt5ith4y

Dynamic Reconfiguration of Intelligence for High Behaviour Adaptability of Autonomous Distributed Discrete-Event Systems

Hamza Gharsellaoui, Mohamed Khalgui
2019 IEEE Access  
This paper deals with the intelligence adaptation of distributed real-time embedded control systems when scenarios of reconfiguration happen in their hardware or software level.  ...  Dealing with performance, we propose to supervise the intelligence QoS of the whole distributed system.  ...  AC i → (t) Op {γ j , γ j ∈ } (8) Op = + | − ( 9 ) AC i = {AC 1 , . . . , AC h } (10) SMM = (β, φ) (11) SMM is the state machine to formalize the i (t) behaviour in reconfigurable system.  ... 
doi:10.1109/access.2019.2904760 fatcat:z53fvaymuveuhcawx7q4y6lhvm

Reconfigurable Low Voltage Direct Current Charging Networks for Plug-In Electric Vehicles

Lesiba Mokgonyana, Kyle Smith, Stuart Galloway
2019 IEEE Transactions on Smart Grid  
Through a series of case studies and a stochastic forecasting approach, the reconfigurable network and EMS demonstrate the capacity to achieve savings over fixed AC and sequential DC systems.  ...  This paper proposes a low voltage direct current (LVDC) reconfigurable charging network for plugin electric vehicles (EVs) and presents a functional energy management system (EMS) that is capable of planning  ...  The reconfigurable network is compared to the fixed DC charging networks discussed in prior literature and the AC charging systems currently being deployed.  ... 
doi:10.1109/tsg.2018.2883518 fatcat:gqwj3p253rchrfplkzve2fupwu
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