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On the Conic Convex Approximation to Locate and Size Fixed-Step Capacitor Banks in Distribution Networks

Oscar Danilo Montoya, Walter Gil-González, Alejandro Garcés
2022 Computation  
The problem of the optimal siting and sizing of fixed-step capacitor banks is studied in this research from the standpoint of convex optimization.  ...  The main advantage of the proposed MI-SOCP model is the possibility of finding the global optimum based on the convex nature of the power flow problem for each binary/integer variable combination in the  ...  Acknowledgments: This work was supported in part by the Centro de Investigación y Desarrollo Científico de la Universidad Distrital Francisco José de Caldas under grant 1643-12-2020 associated with the  ... 
doi:10.3390/computation10020032 fatcat:h47h52j2sve6pgs6ctttqrxb4u

Annual Operating Costs Minimization in Electrical Distribution Networks via the Optimal Selection and Location of Fixed-Step Capacitor Banks Using a Hybrid Mathematical Formulation

Oscar Danilo Montoya, Francisco David Moya, Arul Rajagopalan
2022 Mathematics  
The minimization of annual operating costs in radial distribution networks with the optimal selection and siting of fixed-step capacitor banks is addressed in this research by means of a two-stage optimization  ...  The first stage proposes an approximated mixed-integer quadratic model to select the nodes where the capacitor banks must be installed.  ...  [17] proposed the implementation of the discrete version of the vortex search algorithm to locate and size fixed-step capacitor banks in radial distribution networks.  ... 
doi:10.3390/math10091600 fatcat:yeujtmc7tfc2tcu7ss6coqgnyi

Voltage Stability Analysis in Medium-Voltage Distribution Networks Using a Second-Order Cone Approximation

Oscar Danilo Montoya, Walter Gil-González, Andrés Arias-Londoño, Arul Rajagopalan, Jesus C. Hernández
2020 Energies  
Different simulation cases are considered in one test feeder, described as follows: (i) the distribution network without penetration of distributed generation; (ii) the distribution network with penetration  ...  Numerical results in the test system demonstrated the effectiveness of the proposed SOCP approximation to determine the λ-coefficient.  ...  Funding: This research was funded by the Agencia Estatal de Investigación, Spain (AEI) and the Fondo Europeo de Desarrollo Regional (FEDER) aimed at the Challenges of Society (Grant No.  ... 
doi:10.3390/en13215717 fatcat:xqstixn2w5fbzb5bldiqyu7uyu

Distributed Solution of Stochastic Volt/VAr Control in Radial Networks

Firdous Ul Nazir, Bikash C. Pal, Rabih A. Jabr
2020 IEEE Transactions on Smart Grid  
This paper presents a fully distributed algorithm for the stochastic Volt/VAr control (VVC) problem in active distribution networks.  ...  In order to minimize the effect of rounding off on the final solution, an adaptive threshold discretization technique is used.  ...  We consider two capacitors -one at the middle bus and the other at the terminal bus of the network. Both the capacitors can provide a maximum of 100 kVAr each, with a step size of 20 kVAr.  ... 
doi:10.1109/tsg.2020.3002100 fatcat:pvb77vttcvfdnow6slm3sez5o4

Optimal Placement and Sizing of D-STATCOM in Radial and Meshed Distribution Networks Using a Discrete-Continuous Version of the Genetic Algorithm

Cristian Mateo Castiblanco-Pérez, David Esteban Toro-Rodríguez, Oscar Danilo Montoya, Diego Armando Giral-Ramírez
2021 Electronics  
In this paper, we propose a new discrete-continuous codification of the Chu–Beasley genetic algorithm to address the optimal placement and sizing problem of the distribution static compensators (D-STATCOM  ...  ) in electrical distribution grids.  ...  The main problem with capacitor banks is that they inject reactive power in fixed steps of reactive power.  ... 
doi:10.3390/electronics10121452 fatcat:wwzl7zn6vjhodelyupfhgdhe5y

AC OPF in Radial Distribution Networks - Parts I,II [article]

Konstantina Christakou, Dan-Cristian Tomozei, Jean-Yves Le Boudec, Mario Paolone
2016 arXiv   pre-print
To overcome the aforementioned limitations, we propose an algorithm for the solution of a non-approximated, non-convex OPF problem in radial distribution systems that is based on the method of multipliers  ...  Recently, Farivar and Low proposed a method that is claimed to be exact for radial distribution systems, despite no apparent approximations. In our work, we show that it is, in fact, not exact.  ...  The choice of the step-size is related to the topology of the network and the parameters of the lines (i.e., the network admittance matrix).  ... 
arXiv:1503.06809v3 fatcat:vsryjenohrh6nn3nnf2nclu2pm

A Data-Driven Stochastic Reactive Power Optimization Considering Uncertainties in Active Distribution Networks and Decomposition Method

Tao Ding, Qingrun Yang, Yongheng Yang, Cheng Li, Zhaohong Bie, Frede Blaabjerg
2018 IEEE Transactions on Smart Grid  
To address the uncertain output of distributed generators (DGs) for reactive power optimization in active distribution networks, the stochastic programming model is widely used.  ...  However, the empirical distribution can be biased due to a limited amount of historical data and thus result in a suboptimal control decision.  ...  generation algorithm; active distribution network; distributed generation Step size of shunt capacitors/reactors at bus j w ij,k Tap ratio on k-th level of the transformer (i, j) U j max /U j min Upper  ... 
doi:10.1109/tsg.2017.2677481 fatcat:lau5olv2p5fy5lp5davls7n5bu

Optimal Integration of Dispersed Generation in Medium-Voltage Distribution Networks for Voltage Stability Enhancement

Brayan Enrique Aguirre-Angulo, Lady Carolina Giraldo-Bello, Oscar Danilo Montoya, Francisco David Moya
2022 Algorithms  
It is effected by fixing the sizes and locations of the dispersed sources using the optimal solution obtained with GAMS software.  ...  This study addresses the problem of the maximization of the voltage stability index (λ-coefficient) in medium-voltage distribution networks considering the optimal placement and sizing of dispersed generators  ...  the students Brayan Enrique Aguirre Angulo and Lady Carolina Giraldo Bello to the Electrical Engineering Program of the Engineering Faculty at Universidad Distrital Francisco José de Caldas as a partial  ... 
doi:10.3390/a15020037 fatcat:wibf2wdv3jhyzmful34b2mgugm

Data-adaptive Robust Optimization Method for the Economic Dispatch of Active Distribution Networks

Yipu Zhang, Xiaomeng Ai, Jiakun Fang, Jinyu Wen, Haibo He
2018 IEEE Transactions on Smart Grid  
The scenariogeneration method and the two-stage robust optimization are combined in the proposed method.  ...  This paper proposes a novel dataadaptive robust optimization method for the economic dispatch of active distribution network with renewables.  ...  and the statuses of the switching capacitors banks.  ... 
doi:10.1109/tsg.2018.2834952 fatcat:omge6yenr5dbrolaw4clviim34

Reconfiguration of Electric Power Distribution Systems: Comprehensive Review and Classification

Meisam Mahdavi, Hassan Haes Alhelou, Nikos D. Hatziargyriou, Francisco Jurado
2021 IEEE Access  
In order to establish a complete background, not only traditional approaches, but also those involving uncertainty, reliability, electricity market, power quality, distributed generation, capacitor placement  ...  , and switching time in DSR are highlighted.  ...  Ricardo Alan Verdú Ramos, director of Faculty of Engineering and coordinator of associated laboratory of IPBEN in São Paulo State University at Ilha Solteira for providing the necessary facilities to carry  ... 
doi:10.1109/access.2021.3107475 fatcat:tj6u5gd6bbgb5l2y4yjqvcatou

A Comprehensive Centralized Approach for Voltage Constraints Management in Active Distribution Grid

Florin Capitanescu, Ilya Bilibin, Esther Romero Ramos
2014 IEEE Transactions on Power Systems  
We develop and compare the performances of two optimization models on a snapshot basis for various distribution systems up to 1089 buses.  ...  In particular we show that the use of remotely controlled switches so as to transfer DG between feeders in case of voltage constraints may lead to significant reduction of the DG curtailment.  ...  ACKNOWLEDGMENTS This work is conducted as part of the "Reliable and Efficient Distributed Electricity Generation in Smart Grids" (REDESG) project within the "CREOS-SnT Framework Program". F.  ... 
doi:10.1109/tpwrs.2013.2287897 fatcat:7vuql4kljvdsxjtpj4usnfkg6i

A Generic Approach for Solving Nonlinear-Discrete Security-Constrained Optimal Power Flow Problems in Large-Scale Systems

Ludovic Platbrood, Florin Capitanescu, Christian Merckx, Horia Crisciu, Louis Wehenkel
2014 IEEE Transactions on Power Systems  
This algorithm is based on the combination of a contingency filtering scheme, used to identify the binding contingencies at the optimum, and a network compression method, used to reduce the complexity  ...  The proposed algorithm is implemented with state-of-the-art solvers and applied to two systems: a national grid with 2563 buses and 1297 contingencies, and a model of the European transmission network  ...  Florin Capitanescu has been supported for this work by the National Research Fund Luxembourg in the frame of the CORE project ``Reliable and efficient distributed electricity generation in smart grids'  ... 
doi:10.1109/tpwrs.2013.2289990 fatcat:v2y2qzfaivaqnjioqircrj3ele

Comparative study of distribution networks reconfiguration problem approaches

Ana Moura, Juliana Salvadorinho, Bárbara Soares, Joana Cordeiro
2020 Reserche operationelle  
As such, an analysis and categorization of the various problems and approaches is presented, with the main focus being on the analysis and minimization of energy losses in 33-bus systems.  ...  The main objective is to reduce the real energy losses in the system, while several constraints regarding distribution are satisfied.  ...  Does not perform network reconfiguration with FPA algorithm. [2] Use the method for locating and allocating capacitor banks. Test the approach on 69-bus networks.  ... 
doi:10.1051/ro/2020075 fatcat:zijbi53vkrbx7fppsjnirrfx2u

Controlling Smart Inverters using Proxies: A Chance-Constrained DNN-based Approach [article]

Sarthak Gupta and Vassilis Kekatos and Ming Jin
2021 arXiv   pre-print
The proposed DNNs are trained through two OPF alternatives that confine voltage deviations on the average and as a convex restriction of chance constraints.  ...  Coordinating inverters at scale under uncertainty is the desideratum for integrating renewables in distribution grids.  ...  Some open questions are to: i) Extend the implementation to a multiphase grid model with detailed ZIP loads, regulators, and capacitor banks; ii) Consider additional network constraints and/or alternative  ... 
arXiv:2105.00429v2 fatcat:sgdr5vdowjdtlhibmrwiheczrq

Simultaneous Minimization of Energy Losses and Greenhouse Gas Emissions in AC Distribution Networks Using BESS

Federico Molina-Martin, Oscar Danilo Montoya, Luis Fernando Grisales-Noreña, Jesus C. Hernández, Carlos A. Ramírez-Vanegas
2021 Electronics  
out an efficient operation of their distribution networks when BESS and renewable energy resources are introduced.  ...  Numerical results in the IEEE 33-bus and IEEE 69-node test feeders demonstrate the multi-objective nature of this optimization problem and the multiple possibilities that allow the grid operators to carry  ...  Acknowledgments: This work was supported in part by the Centro de Investigación y Desarrollo  ... 
doi:10.3390/electronics10091002 doaj:b0fe6d666ef64b9d8348ce0b778a4db7 fatcat:umt7yyffjrafbfgxhq7wxpmcpi
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