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Journal articles on the topic 'Successive Backward Sweep Method'

Author: Grafiati

Published: 4 June 2021

Last updated: 3 February 2022

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1

Cho, Donghyurn, and Seung Pil Kim. "Successive Backward Sweep Method for Orbit Transfer Augmented with Homotopy Algorithm." Journal of the Korean Society for Aeronautical & Space Sciences 44, no. 7 (2016): 620–28. http://dx.doi.org/10.5139/jksas.2016.44.7.620.

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2

Teng, Jen-Hao, and Chuo-Yean Chang. "Backward/Forward Sweep-Based Harmonic Analysis Method for Distribution Systems." IEEE Transactions on Power Delivery 22, no. 3 (2007): 1665–72. http://dx.doi.org/10.1109/tpwrd.2007.899523.

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3

McAsey, Michael, Libin Mou, and Weimin Han. "Convergence of the forward-backward sweep method in optimal control." Computational Optimization and Applications 53, no. 1 (2012): 207–26. http://dx.doi.org/10.1007/s10589-011-9454-7.

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4

Ouali, Saad, and Abdeljabbar Cherkaoui. "An Improved Backward/Forward Sweep Power Flow Method Based on a New Network Information Organization for Radial Distribution Systems." Journal of Electrical and Computer Engineering 2020 (January 17, 2020): 1–11. http://dx.doi.org/10.1155/2020/5643410.

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This paper presents a load flow algorithm based on the backward/forward sweep principle, flexible with network topology changes, with an improvement in ensuring a minimum number of searching for connections between nodes in the calculation sequence in the forward and the backward sweep, by organizing the radial distribution system information into a main line and its derivations. The proposed load flow analysis is easy to implement and does not require the use of any complex renumbering of branches and nodes, or any matrix calculation, with the only use of linear equations based on Kirchhoff’s

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5

Siahaan, Yokhebert Natasya, Samuel Samuel, and Berlian Arswendo Adietya. "Analisa Bentuk Foil pada Kapal Hydrofoil Supported-Catamaran (Hysucat)." Jurnal Rekayasa Hijau 4, no. 3 (2020): 145–56. http://dx.doi.org/10.26760/jrh.v4i3.145-156.

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ABSTRAKKapal katamaran yang terintegrasi dengan foil bertujuan untuk menghasilkan performance lebih baik. Hydrofoil Supported-Catamaran (Hysucat) merupakan kapal katamaran yang dirancang untuk kecepatan tinggi menggunakan foil. Penelitian ini dilakukan dengan pendekatan metode numerik untuk mempresentasikan aliran fluida menggunakan RANS (Reynolds-Averaged Navier-Stokes). Aliran fluida pada penelitian ini menggunakan dua fasa yaitu air dan udara untuk menganalisis hambatan dan gaya angkat kapal katamaran yang telah dimodifikasi menjadi hysucat. Hysucat pada penelitian ini dibedakan oleh tiga m

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6

Augugliaro, A., L. Dusonchet, S. Favuzza, M. G. Ippolito, and E. Riva Sanseverino. "A backward sweep method for power flow solution in distribution networks." International Journal of Electrical Power & Energy Systems 32, no. 4 (2010): 271–80. http://dx.doi.org/10.1016/j.ijepes.2009.09.007.

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7

Araujo, Leandro Ramos de, Débora Rosana Ribeiro Penido, Sandoval Carneiro Júnior, José Luiz Rezende Pereira, and Paulo Augusto Nepomuceno Garcia. "Comparisons between the three-phase current injection method and the forward/backward sweep method." International Journal of Electrical Power & Energy Systems 32, no. 7 (2010): 825–33. http://dx.doi.org/10.1016/j.ijepes.2010.01.020.

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8

Mortezazadeh, Mohammad, and Liangzhu Leon Wang. "A high-order backward forward sweep interpolating algorithm for semi-Lagrangian method." International Journal for Numerical Methods in Fluids 84, no. 10 (2017): 584–97. http://dx.doi.org/10.1002/fld.4362.

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9

Hameed, Faisal, Mohamed Al Hosani, and H. H. Zeineldin. "A Modified Backward/Forward Sweep Load Flow Method for Islanded Radial Microgrids." IEEE Transactions on Smart Grid 10, no. 1 (2019): 910–18. http://dx.doi.org/10.1109/tsg.2017.2754551.

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10

Duran-Quintero, Michel, John E. Candelo, and Jose Soto-Ortiz. "A modified backward/forward sweep-based method for reconfiguration of unbalanced distribution networks." International Journal of Electrical and Computer Engineering (IJECE) 9, no. 1 (2019): 85. http://dx.doi.org/10.11591/ijece.v9i1.pp85-101.

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<span lang="EN-US">A three-phase unbalanced power flow method can provide a more realistic scenario of how distribution networks operate. The backward/forward sweep-based power flow method </span><span lang="EN-AU">(BF-PF)</span><span lang="EN-US"> has been used for many years as an important computational tool to solve the power flow for unbalanced and radial power systems. However, some of the </span><span lang="EN-AU">few </span><span lang="EN-US">available research tools produce many errors when </span><span lang="EN-AU">the

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11

Mat Ali, Nur Afza, Rostang Rahman, Jumat Sulaiman, and Khadizah Ghazali. "Solutions of reaction-diffusion equations using similarity reduction and HSSOR iteration." Indonesian Journal of Electrical Engineering and Computer Science 16, no. 3 (2019): 1430. http://dx.doi.org/10.11591/ijeecs.v16.i3.pp1430-1438.

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<p>Similarity method is used in finding the solutions of partial differential equation (PDE) in reduction to the corresponding ordinary differential equation (ODE) which are not easily integrable in terms of elementary or tabulated functions. Then, the Half-Sweep Successive Over-Relaxation (HSSOR) iterative method is applied in solving the sparse linear system which is generated from the discretization process of the corresponding second order ODEs with Dirichlet boundary conditions. Basically, this ODEs has been constructed from one-dimensional reaction-diffusion equations by using wave

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12

Issicaba, Diego, and Jorge Coelho. "Evaluation of the Forward-Backward Sweep Load Flow Method using the Contraction Mapping Principle." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3229. http://dx.doi.org/10.11591/ijece.v6i6.11303.

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<p>This paper presents an assessment of the forward-backward sweep load flow method to distribution system analysis. The method is formally assessed using fixed-point concepts and the contraction mapping theorem. The existence and uniqueness of the load flow feasible solution is supported by an alternative argument from those obtained in the literature. Also, the closed-form of the convergence rate of the method is deduced and the convergence dependence of loading is assessed. Finally, boundaries for error values per iteration between iterates and feasible solution are obtained. Theoreti

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13

Issicaba, Diego, and Jorge Coelho. "Evaluation of the Forward-Backward Sweep Load Flow Method using the Contraction Mapping Principle." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 6 (2016): 3229. http://dx.doi.org/10.11591/ijece.v6i6.pp3229-3237.

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<p>This paper presents an assessment of the forward-backward sweep load flow method to distribution system analysis. The method is formally assessed using fixed-point concepts and the contraction mapping theorem. The existence and uniqueness of the load flow feasible solution is supported by an alternative argument from those obtained in the literature. Also, the closed-form of the convergence rate of the method is deduced and the convergence dependence of loading is assessed. Finally, boundaries for error values per iteration between iterates and feasible solution are obtained. Theoreti

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14

Kim, Ho-Young, Ji-Soo Kim, Jin-Sol Song, Gwang-Su Shin, and Chul-Hwan Kim. "A Study on Development of Hosting Capacity Assessment Tool using Forward-Backward Sweep Method." Transactions of The Korean Institute of Electrical Engineers 70, no. 8 (2021): 1220–24. http://dx.doi.org/10.5370/kiee.2021.70.8.1220.

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15

Kumar, Vipin, Shubham Swapnil, and V. R. Singh. "Adaptive Algorithm for Solving the Load Flow Problem in Distribution System." Journal of Intelligent Systems 27, no. 3 (2018): 377–91. http://dx.doi.org/10.1515/jisys-2016-0084.

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Abstract This paper presents a fast and efficient method for load flow analysis of radial distribution networks. Here, an adaptive algorithm is proposed to analyze the load flow problem of distribution systems. An adaptive algorithm is the combination of backward/forward (BW/FW) sweep and cuckoo search (CS) algorithms. In the proposed method, the optimum load flow analysis of the radial distribution system is attained, while optimizing the voltage and current computation of the BW/FW sweep algorithm. Now, by the CS, the output voltage of the BW/FW sweep algorithm is compared with the standard

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16

Archundia-Aranda, I., and R. O. Mota-Palomino. "Harmonic Penetration Method for Radial Distribution Networks." International Journal of Emerging Electric Power Systems 15, no. 2 (2014): 111–17. http://dx.doi.org/10.1515/ijeeps-2013-0093.

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Abstract This work presents a method for calculating harmonic voltages and currents in radial distribution networks. The proposed method is an extension of the backward/forward sweep method for load flow studies in distribution systems and as such preserves its good convergence characteristics besides of not requiring of any network matrix. The method was tested on an eight-node one-phase radial test feeder and results were similar to those that were obtained by the well-known current injection method. Also it was tested on a 2000-node network, showing this way that this is a more suitable met

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17

K.Venkat Rao and Dr.K.RamaSudha. "Optimal Path Solution Using Dijkstra's Algorithm for Practical 21 bus system." International Journal for Modern Trends in Science and Technology 6, no. 12 (2021): 502–9. http://dx.doi.org/10.46501/ijmtst061296.

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This paper presents the Shortest Path Finding algorithm to identify the optimal path for a distribution system during restoration using Dijkstra's method. The objective is to reduce the power losses and obtain an efficient restoration plan after an extensive outage of the system. The power losses of the distribution system are calculated using Forward-Backward sweep load flow method. The proposed method has been implemented for a practical 21 bus distribution system using MATLAB programming .

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18

Shan, Peng. "Kinematic Analysis of 3-D Swept Shock Surfaces in Axial Flow Compressors." Journal of Turbomachinery 123, no. 3 (2000): 490–500. http://dx.doi.org/10.1115/1.1370159.

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This paper is part II of a comprehensive study on the blade leading edge sweep/bend of supersonic and transonic axial compressors. The paper explores and analyzes the kinematic characteristic variables of three-dimensional (3-D) swept shock surfaces. In the research field studying the sweep aerodynamics of axial flow compressors and fans, many types of high loading swept blades are under intensive study. So, in both direct and inverse design methods and experimental validations, an accurate grasp of the sweep characteristic of the blade’s 3-D swept shock surface becomes of more concern than be

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19

Sunarto, Andang, Praveen Agarwal, Jumat Sulaiman, Jackel Vui Lung Chew, and Shaher Momani. "Quarter-Sweep Preconditioned Relaxation Method, Algorithm and Efficiency Analysis for Fractional Mathematical Equation." Fractal and Fractional 5, no. 3 (2021): 98. http://dx.doi.org/10.3390/fractalfract5030098.

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Research into the recent developments for solving fractional mathematical equations requires accurate and efficient numerical methods. Although many numerical methods based on Caputo’s fractional derivative have been proposed to solve fractional mathematical equations, the efficiency of obtaining solutions using these methods when dealing with a large matrix requires further study. The matrix size influences the accuracy of the solution. Therefore, this paper proposes a quarter-sweep finite difference scheme with a preconditioned relaxation-based approximation to efficiently solve a large matr

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20

anoj Gupta, Chitransh Shrivastava, M. "Review of Forward & Backward Sweep Method for Load Flow Analysis of Radial Distribution System." International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering 04, no. 06 (2015): 5595–99. http://dx.doi.org/10.15662/ijareeie.2015.0406049.

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21

Alinjak, Tomislav, Ivica Pavić, and Marinko Stojkov. "Improvement of backward/forward sweep power flow method by using modified breadth-first search strategy." IET Generation, Transmission & Distribution 11, no. 1 (2017): 102–9. http://dx.doi.org/10.1049/iet-gtd.2016.0566.

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22

Kodama, H., and M. Namba. "Unsteady Lifting Surface Theory for a Rotating Cascade of Swept Blades." Journal of Turbomachinery 112, no. 3 (1990): 411–17. http://dx.doi.org/10.1115/1.2927675.

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A lifting surface theory is developed to predict the unsteady three-dimensional aerodynamic characteristics for a rotating subsonic annular cascade of swept blades. A discrete element method is used to solve the integral equation for the unsteady blade loading. Numerical examples are presented to demonstrate effects of the sweep on the blade flutter and on the acoustic field generated by interaction of rotating blades with a convected sinusoidal gust. It is found that increasing the sweep results in decrease of the aerodynamic work on vibrating blades and also remarkable reduction of the modal

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23

Issicaba, Diego, and Jorge Coelho. "Rotational Load Flow Method for Radial Distribution Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1344. http://dx.doi.org/10.11591/ijece.v6i3.10083.

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This paper introduces a modified edition of classical Cespedes' load flow method to radial distribution system analysis. In the developed approach, a distribution network is modeled in different complex reference systems and reduced to a set of connected equivalent subnetworks, each without resistance, while graph topology and node voltage solution are preserved. Active power losses are then not dissipated in the modeled subnetworks and active power flows can be obtained as a consequence of radiality. Thus, the proposed method preprocesses a series of variable transformations concomitant to an

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24

Issicaba, Diego, and Jorge Coelho. "Rotational Load Flow Method for Radial Distribution Systems." International Journal of Electrical and Computer Engineering (IJECE) 6, no. 3 (2016): 1344. http://dx.doi.org/10.11591/ijece.v6i3.pp1344-1352.

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This paper introduces a modified edition of classical Cespedes' load flow method to radial distribution system analysis. In the developed approach, a distribution network is modeled in different complex reference systems and reduced to a set of connected equivalent subnetworks, each without resistance, while graph topology and node voltage solution are preserved. Active power losses are then not dissipated in the modeled subnetworks and active power flows can be obtained as a consequence of radiality. Thus, the proposed method preprocesses a series of variable transformations concomitant to an

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25

Bompard, E., E. Carpaneto, G. Chicco, and R. Napoli. "Convergence of the backward/forward sweep method for the load-flow analysis of radial distribution systems." International Journal of Electrical Power & Energy Systems 22, no. 7 (2000): 521–30. http://dx.doi.org/10.1016/s0142-0615(00)00009-0.

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26

Rahmalia, Dinita, and Arif Rohmatullah. "Analisis Kestabilan dan Kontrol Optimal Model Penyebaran Penyakit Zika dari Gejala Dengue Menggunakan Forward Backward Sweep Method." Jurnal Ilmiah Soulmath : Jurnal Edukasi Pendidikan Matematika 7, no. 2 (2019): 159. http://dx.doi.org/10.25139/smj.v7i2.1953.

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27

Mohammed, Pshtiwan Othman, Thabet Abdeljawad, Fahd Jarad, and Yu-Ming Chu. "Existence and Uniqueness of Uncertain Fractional Backward Difference Equations of Riemann–Liouville Type." Mathematical Problems in Engineering 2020 (October 16, 2020): 1–8. http://dx.doi.org/10.1155/2020/6598682.

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In this article, we consider the analytic solutions of the uncertain fractional backward difference equations in the sense of Riemann–Liouville fractional operators which are solved by using the Picard successive iteration method. Also, we consider the existence and uniqueness theorem of the solution to an uncertain fractional backward difference equation via the Banach contraction fixed-point theorem under the conditions of Lipschitz constant and linear combination growth. Finally, we point out some examples to confirm the validity of the existence and uniqueness of the solution.

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28

Gianto, Rudy, and Purwoharjono Purwoharjono. "A new method to incorporate three-phase power transformer model into distribution system load flow analysis." International Journal of Applied Power Engineering (IJAPE) 10, no. 3 (2021): 262. http://dx.doi.org/10.11591/ijape.v10.i3.pp262-270.

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This paper proposes a new and simple method to incorporate three-phase power transformer model into distribution system load flow (DSLF) analysis. The objective of the present work is to find a robust and efficient technique for modeling and integrating power transformer in the DSLF analysis. The proposed transformer model is derived based on nodal admittance matrix and formulated by using the symmetrical component theory. Load flow formulation in terms of branch currents and nodal voltages is also proposed in this paper to enable integrating the model into the DSLF analysis. Singularity that

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29

Abdel-Akher, Mamdouh. "Voltage stability analysis of unbalanced distribution systems using backward/forward sweep load-flow analysis method with secant predictor." IET Generation, Transmission & Distribution 7, no. 3 (2013): 309–17. http://dx.doi.org/10.1049/iet-gtd.2012.0360.

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30

Rocha, Ednardo, Max Pimentel Filho, Melinda Cruz, Marcos Almeida, and Manoel Medeiros Júnior. "A New Linear State Estimator for Fault Location in Distribution Systems Based on Backward-Forward Currents Sweep." Energies 13, no. 11 (2020): 2692. http://dx.doi.org/10.3390/en13112692.

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This paper presents a new linear state estimation model based on a current summation load flow method for three-phase distribution systems. The developed estimator may be applied to both the supervision of distribution systems under normal operating conditions and the fault location in cases of low and high impedance faults. Our studies were conducted using a real distribution feeder. For fault location analysis, the system was modeled using the ATP (alternative transient program) in order to emulate measurements of voltages and currents at the substation, and voltage magnitudes registered by

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31

Kerimkulov, B., D. Šiška, and L. Szpruch. "A Modified MSA for Stochastic Control Problems." Applied Mathematics & Optimization 84, no. 3 (2021): 3417–36. http://dx.doi.org/10.1007/s00245-021-09750-2.

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AbstractThe classical Method of Successive Approximations (MSA) is an iterative method for solving stochastic control problems and is derived from Pontryagin’s optimality principle. It is known that the MSA may fail to converge. Using careful estimates for the backward stochastic differential equation (BSDE) this paper suggests a modification to the MSA algorithm. This modified MSA is shown to converge for general stochastic control problems with control in both the drift and diffusion coefficients. Under some additional assumptions the rate of convergence is shown. The results are valid witho

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32

Jiang, Feng Li, Zai Lin Piao, and Li Di Wang. "A New Backward/Forward Algorithm for Weakly Meshed Distribution Systems with Distributed Generation." Applied Mechanics and Materials 541-542 (March 2014): 1027–31. http://dx.doi.org/10.4028/www.scientific.net/amm.541-542.1027.

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According to the analysis of the network topological structure, an improved backward/forward sweep algorithm was proposed. The algorithm can be applied for weakly meshed distribution systems with distributed generation (DG). The method developed an incidence matrixbranch current-bus current injection matrix. A meshed network was converted to a radial network by breaking the loops at the ending nodes of link branches. The mathematical models of DG were established as PV and PQ node. For PV nodes, this paper used a dummy node and dummy branch which inject reactive power to the specified node to

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33

Asamoah, Joshua Kiddy K., Francis T. Oduro, Ebenezer Bonyah, and Baba Seidu. "Modelling of Rabies Transmission Dynamics Using Optimal Control Analysis." Journal of Applied Mathematics 2017 (2017): 1–23. http://dx.doi.org/10.1155/2017/2451237.

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We examine an optimal way of eradicating rabies transmission from dogs into the human population, using preexposure prophylaxis (vaccination) and postexposure prophylaxis (treatment) due to public education. We obtain the disease-free equilibrium, the endemic equilibrium, the stability, and the sensitivity analysis of the optimal control model. Using the Latin hypercube sampling (LHS), the forward-backward sweep scheme and the fourth-order Range-Kutta numerical method predict that the global alliance for rabies control’s aim of working to eliminate deaths from canine rabies by 2030 is attainab

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34

Lin, Jiazhe, Rui Xu, and Liangchen Li. "Mittag–Leffler synchronization for impulsive fractional-order bidirectional associative memory neural networks via optimal linear feedback control." Nonlinear Analysis: Modelling and Control 26, no. 2 (2021): 207–26. http://dx.doi.org/10.15388/namc.2021.26.21203.

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In this paper, we are concerned with the synchronization scheme for fractional-order bidirectional associative memory (BAM) neural networks, where both synaptic transmission delay and impulsive effect are considered. By constructing Lyapunov functional, sufficient conditions are established to ensure the Mittag–Leffler synchronization. Based on Pontryagin’s maximum principle with delay, time-dependent control gains are obtained, which minimize the accumulative errors within the limitation of actuator saturation during the Mittag–Leffler synchronization. Numerical simulations are carried out to

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35

Grisales-Noreña, L. F., O. D. Garzon-Rivera, C. A. Ramírez-Vanegas, O. D. Montoya, and C. A. Ramos-Paja. "Application of the backward/forward sweep method for solving the power flow problem in DC networks with radial structure." Journal of Physics: Conference Series 1448 (January 2020): 012012. http://dx.doi.org/10.1088/1742-6596/1448/1/012012.

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36

Kongjeen, Y., K. Bhumkittipich, N. Mithulananthan, I. S. Amiri, and P. Yupapin. "A modified backward and forward sweep method for microgrid load flow analysis under different electric vehicle load mathematical models." Electric Power Systems Research 168 (March 2019): 46–54. http://dx.doi.org/10.1016/j.epsr.2018.10.031.

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37

Kirthiga, M. Venkata, and S. Arul Daniel. "Computational Techniques for Autonomous Microgrid Load Flow Analysis." ISRN Power Engineering 2014 (May 11, 2014): 1–12. http://dx.doi.org/10.1155/2014/742171.

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This paper attempts at developing simple, efficient, and fast converging load flow analysis techniques tailored to autonomous microgrids. Two modified backward forward sweep techniques have been developed in this work where the largest generator is chosen as slack generator, in the first method and all generator buses are modeled as slack buses in the second method. The second method incorporates the concept of distributed slack bus to update the real and reactive power generations in the microgrid. This paper has details on the development of these two methodologies and the efficacy of these

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38

Sunarto, Andang, Praveen Agarwal, Jackel Vui Lung Chew, and Jumat Sulaiman. "Approximation Solution of the Fractional Parabolic Partial Differential Equation by the Half-Sweep and Preconditioned Relaxation." Symmetry 13, no. 6 (2021): 1005. http://dx.doi.org/10.3390/sym13061005.

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In this study, the numerical solution of a space-fractional parabolic partial differential equation was considered. The investigation of the solution was made by focusing on the space-fractional diffusion equation (SFDE) problem. Note that the symmetry of an efficient approximation to the SFDE based on a numerical method is related to the compatibility of a discretization scheme and a linear system solver. The application of the one-dimensional, linear, unconditionally stable, and implicit finite difference approximation to SFDE was studied. The general differential equation of the SFDE was di

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39

Morais, Andréa Pereira, Alexandre Visintainer Pino, and Marcio Nogueira Souza. "Assessment of Tooth Structure using an Alternative Electrical Bioimpedance Spectroscopy Method." Brazilian Dental Journal 25, no. 2 (2014): 146–52. http://dx.doi.org/10.1590/0103-6440201302316.

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In the past few years bioimpedance has been used in many applications in dentistry, such as estimating the length of root canals and the physical properties of enamel. Despite the significant number of studies using bioimpedance to investigate the dental structure, many of them use only the real component of bioimpedance, i.e., the resistance, disregarding the information provided by the imaginary one, i.e., the reactance. Moreover, in different studies that investigate both parts of bioimpedance, the data are obtained by using single frequency or multifrequency methods based on sinusoidal swe

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40

Tapia-Tinoco, Guillermo, David Granados-Lieberman, David A. Rodriguez-Alejandro, Martin Valtierra-Rodriguez, and Arturo Garcia-Perez. "A Robust Electric Spring Model and Modified Backward Forward Solution Method for Microgrids with Distributed Generation." Mathematics 8, no. 8 (2020): 1326. http://dx.doi.org/10.3390/math8081326.

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The electric spring (ES) is a contemporary device that has emerged as a viable alternative for solving problems associated with voltage and power stability in distributed generation-based smart grids (SG). In order to study the integration of ESs into the electrical network, the steady-state simulation models have been developed as an essential tool. Typically, these models require an equivalent electrical circuit of the in-test networks, which implies adding restrictions for its implementation in simulation software. These restrictions generate simplified models, limiting their application to

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41

Bouketir, Omrane, Haddi Sebaa, and Tarek Bouktir. "Optimal Integration of Distributed Generation in a Radial Distribution System Using BW/FW Sweep and PSO Algorithm." Advanced Engineering Forum 35 (February 2020): 94–101. http://dx.doi.org/10.4028/www.scientific.net/aef.35.94.

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Installation of distributed generations (DGs) could be an effective solution to the problem of shortage of the electric energy especially in populated areas. Installation of DG in non-suitable places can result in more energy losses and voltage instability which leads to higher operating cost. DGs should be placed optimally in the network to get maximum efficiency of the system. This paper presents a new method to solve the optimal sizing and placement of DGs with the aim of minimizing real power loss and improving voltage profile in a distribution system. A power flow technique based on Backw

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42

Sedaghat, Mohammad, Esmaeel Rokrok, and Mohammad Bakhshipour. "A New DG Allocation Approach Based on Biogeography-Based Optimization with Considering Fuzzy Load Uncertainty." IAES International Journal of Artificial Intelligence (IJ-AI) 4, no. 3 (2015): 89. http://dx.doi.org/10.11591/ijai.v4.i3.pp89-96.

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A new distributed generation placement method based on biogeography-based optimization (BBO) is investigated in this paper. A significant novelty of this study lies in considering fuzzy load uncertainty. For this purpose a fuzzy backward- forward sweep load flow is proposed. The main objectives of this study is minimizing power losses and improving voltage profile. A comparative study between optimal location and sizing under typical load condition and fuzzy load uncertainty is presented. To verify the efficiency of proposed BBO method, it is conducted on IEEE 33 bus distribution system, also

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43

Ju, Yuntao, Wenchuan Wu, and Boming Zhang. "Convergence problem in forward/backward sweep power flow method caused by non-positive-sequence impedance of distributed generators and its solution." International Journal of Electrical Power & Energy Systems 65 (February 2015): 463–66. http://dx.doi.org/10.1016/j.ijepes.2014.04.035.

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Wang, Hong, Ying Wang, Xianyou Wang, et al. "Investigation of the Performance ofAucore-Pdshell/C as the Anode Catalyst of Direct Borohydride-Hydrogen Peroxide Fuel Cell." International Journal of Electrochemistry 2011 (2011): 1–7. http://dx.doi.org/10.4061/2011/129182.

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The carbon-supported bimetallic Au-Pd catalyst with core-shell structure is prepared by successive reduction method. The core-shell structure, surface morphology, and electrochemical performances of the catalysts are characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet-visible absorption spectrometry, linear sweep voltammetry, and chronopotentiometry. The results show that the Au-Pd/C catalyst with core-shell structure exhibits much higher catalytic activity for the direct oxidation of NaBH4than pure Au/C catalyst. A direct borohydride-hydrogen peroxide

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Abdullayev, Akmaljon, Kholsaid Kholturayev, and Nigora Safarbayeva. "Exact method to solve of linear heat transfer problems." E3S Web of Conferences 264 (2021): 02059. http://dx.doi.org/10.1051/e3sconf/202126402059.

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When approximating multidimensional partial differential equations, the values of the grid functions from neighboring layers are taken from the previous time layer or approximation. As a result, along with the approximation discrepancy, an additional discrepancy of the numerical solution is formed. To reduce this discrepancy when solving a stationary elliptic equation, parabolization is carried out, and the resulting equation is solved by the method of successive approximations. This discrepancy is eliminated in the approximate analytical method proposed below for solving two-dimensional equat

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Montoya, Oscar Danilo, Walter Gil-González, and Diego Armando Giral. "On the Matricial Formulation of Iterative Sweep Power Flow for Radial and Meshed Distribution Networks with Guarantee of Convergence." Applied Sciences 10, no. 17 (2020): 5802. http://dx.doi.org/10.3390/app10175802.

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This paper presents a general formulation of the classical iterative-sweep power flow, which is widely known as the backward–forward method. This formulation is performed by a branch-to-node incidence matrix with the main advantage that this approach can be used with radial and meshed configurations. The convergence test is performed using the Banach fixed-point theorem while considering the dominant diagonal structure of the demand-to-demand admittance matrix. A numerical example is presented in tutorial form using the MATLAB interface, which aids beginners in understanding the basic concepts

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Lüdeke, H., and R. von Soldenhoff. "Direct numerical simulation of TS-waves over suction panel steps from manufacturing tolerances." CEAS Aeronautical Journal 12, no. 2 (2021): 261–71. http://dx.doi.org/10.1007/s13272-021-00496-9.

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AbstractTo determine allowable tolerances between successive suction panels at hybrid laminar wings with suction surfaces, direct numerical simulations of Tollmien–Schlichting waves over different steps are carried out for realistic suction rates on a wind tunnel configuration. Simulations at given suction panel positions over forward and backward facing steps are carried out by the use of a high-order method for the direct simulation of Tollmien–Schlichting wave growth. Comparisons between high-fidelity direct numerical simulations and quick linear stability calculations have shown capabiliti

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DARAJAT, PANGESTUTI PRIMA, and TYAS HUSADANINGSIH. "KONTROL OPTIMAL PADA MODEL PENYEBARAN VIRUS KOMPUTER DENGAN KLASIFIKASI PENGAMANAN." E-Jurnal Matematika 8, no. 4 (2019): 253. http://dx.doi.org/10.24843/mtk.2019.v08.i04.p261.

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In this paper, a model of the spread of computer viruses with security classification and nonlinear infection rates is formulated. From the short analysis, is found that the model does not have a virus-free equilibrium point. This show that the virus will always exist in the system and increasingly that can not be avoided. Therefore, control strategy by installing antivirus on subpopulation susceptible low-security level and infective subpopulation aims to minimize the number of infective computers, and minimize the cost related to these strategies. Hence, an important tool, in this case is, o

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Клочко, Н. П., В. Р. Копач, Г. С. Хрипунов та ін. "Гетероструктура для обращенного диода на основе электроосажденного в импульсном режиме наномассива оксида цинка и изготовленной методом SILAR пленки иодида меди". Физика и техника полупроводников 52, № 9 (2018): 1081. http://dx.doi.org/10.21883/ftp.2018.09.46233.8688.

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AbstractA heterostructure promising for designing a backward diode is formed from a zinc-oxide nanorod array and a nanostructured copper-iodide film. The effect of modes of successive ionic layer adsorption and reaction (SILAR) deposition and the subsequent iodization of CuI films on smooth glass, mica, and fluorine-doped tin oxide (FTO) substrates and on the surface of electrodeposited nanostructured zinc-oxide arrays on the film structure and electrical and optical properties is investigated. A connection between the observed variations in the structure and properties of this material and in

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Legha, Mahdi, Hassan Javaheri, and Mohammad Legha. "Optimal Conductor Selection in Radial Distribution Systems for Productivity Improvement Using Genetic Algorithm." Iraqi Journal for Electrical and Electronic Engineering 9, no. 1 (2013): 29–35. http://dx.doi.org/10.37917/ijeee.9.1.3.

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Development of distribution systems result in higher system losses and poor voltage regulation. Consequently, an efficient and effective distribution system has become more urgent and important. Hence proper selection of conductors in the distribution system is important as it determines the current density and the resistance of the line. This paper examines the use of different evolutionary algorithms, genetic algorithm (GA), to optimal branch conductor selection in planning radial distribution systems with the objective to minimize the overall cost of annual energy losses and depreciation on

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