A robust decoupled power flow for distribution systems

Aravindhababu, P.; Ashokkumar, R.

doi:10.1016/j.enconman.2010.11.019

Cited by 8 publications

(11 citation statements)

References 15 publications

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“…The number of problem variables (Δ V and Δ δ ) will be almost twice the number of nodes ( nn ) and equals (2 × nn − 2), as the voltage angle ( δ 1 ) of reference node is known. The results of PSGOM were compared with those of the existing published methods of FBSPF (Sangamesh and Suresh, 2020), LDPF (Aravindhababu and Ashokkumar, 2011), RDPF (Aravindhababu and Ashokkumar, 2008) and NR (Shakil et al , 2020). A tolerance value of 0.0001 per unit was used for checking the convergence of the PSGOM and the existing methods as well.…”

Section: Resultsmentioning

confidence: 99%

“…Such PF study is very important for distribution automation to carry out distribution management functions such as reconfiguration, fault detection, load shedding, capacitor placement, distribution generation (DG) placement and FACTS placement. The classical PF methods such Gauss-Seidel, Newton–Raphson (NR) and fast decoupled PF methods were developed and used in transmission networks (Tinney and Hart, 1967; Stott and Alsac, 1974; Mythili et al , 2020), and may not reliably converge to yield PF solution of DNs as they are ill-conditioned because of weakly meshed or radial nature of the network, lower node voltages, wide variation of feeders’ r/x ratios and unbalanced loads (Aravindhababu and Ashokkumar, 2011; Rajesh and Shajin, 2020; Shajin and Rajesh, 2020; Thota et al , 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Chen and Yang (2010) presented a graph theory based three-phase PF taking loop as the reference unlike bus reference. Aravindhababu and Ashokkumar (2011) proposed a robust line current based decoupled PF (LDPF) through eliminating the off-diagonal blocks of Jacobian matrix by transformations without adapting any of the major assumptions adapted in classical decoupled PF schemes. Ramana et al (2013) developed a power summation based PF technique for DNs besides suggesting a judicious scheme for setting initial voltages and power losses for realizing good convergence.…”

Section: Introductionmentioning

confidence: 99%

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Soccer game optimization-based power flow for distribution networks

Venkatesan

Palanivelu

2021

COMPEL

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Purpose The purpose of the paper is to develop a simple, efficient and robust power flow (PF) method for ill-conditioned distribution networks (DNs). Design/methodology/approach It first formulates the PF problem as an optimization problem of minimizing the node power mismatches, while treating the corrections of node voltages as problem variables and then uses soccer game optimization (SGO), an artificial intelligent algorithm simulating the behavior of soccer game players in scoring goals, in solving the formulated PF problem. Findings It studies the performances of the developed method on four standard test DNs and exhibits that the method is superior in respect of accuracy, robustness and computational speed than those of existing methods. Originality/value It suggests a novel and new PF method using SGO and portrays that the proposed method is as accurate as any other PF method, robust like non-Newton type of PF methods and faster than Newton type of PF methods.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soccer game optimization-based power flow for distribution networks

Venkatesan

Palanivelu

2021

COMPEL

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“…The main objective of the robust decoupled method is to decouple the Newton-Raphson equation into two sub-equations by a constant transformation matrix [9]. Multiplying the Jacobian matrix by the transformation matrix will result in zero off-diagonal blocks of the Jacobian.…”

Section: Robust Decoupled (Rd) Methodsmentioning

confidence: 99%

Power Flow Analysis of Weakly Meshed Distribution Network Including DG

Al-Sakkaf

Al-Muhaini

2018

Eng. Technol. Appl. Sci. Res.

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Power flow is one of the essential studies in power system operation and planning. All steady-state parameters for power distribution systems, such as bus voltage magnitudes, angles, power flows, and power losses, can be calculated by conducting power flow analysis. Distribution system features differ from those of transmission system, rendering conventional load flow algorithms inapplicable. In this paper, three distribution power flow techniques are presented and tested to evaluate their performance when applied to a networked distribution system including distributed generation (DG). These are the distribution load flow (DLF) matrix, the enhanced Newton Raphson (ENR), and the robust decoupled (RD) method. IEEE 33-bus system is adopted for implementing the above methods. Radial and weakly meshed configurations are applied to the tested system with DG inclusion to investigate their influence on the power flow study findings.

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“…The PF equations are linearized and transformed by a constant matrix for decoupling the PF problem. The method is simple and efficient, and has the drawback of causing oscillatory convergence on ill-conditioned DSs similar to Newton based techniques due to radial nature of the network [5].…”

Section: Introductionmentioning

confidence: 99%

Modified soccer game optimization and its application on power flow and distribution generation placement problems of distribution systems

Venkatesan

Srilakshmi²,

Palanivelu

2021

Evol. Intel.

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Distribution power flow (DPF) and distribution generation (DG) placement are important problems in modern distribution systems (DSs). The DPF problem is modelled as an optimization problem of minimizing the node power mismatches, while considering the corrections of node voltages as solution variables. The node locations and DG ratings of DG placement (DGP) problem are considered as optimization parameters with an objective of minimizing the network loss (NL). The soccer game optimization (SGO) models the movements of soccer game players by "move-off" and "move-forward" phases, and has the drawback of performing simple arithmetic average for representing random stochastic movements of players during its "move-forward" phase. This paper endeavours to first remodel the move-forward phase by adapting Levy Flight mechanism to simulate the random jumping action of players to a long distance in getting the ball and scoring a goal, and then develop new modified SGO (MSGO) based methods for solving the formulated DPF and DGP problems. The simulation study exhibited that the proposed DPF method is 751 and 666 times faster than the NR PF technique and the DGP method is able to save the NL by 65% and 69% for 33 and 69 node systems respectively.

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A robust decoupled power flow for distribution systems

Cited by 8 publications

References 15 publications

Soccer game optimization-based power flow for distribution networks

Soccer game optimization-based power flow for distribution networks

Power Flow Analysis of Weakly Meshed Distribution Network Including DG

Modified soccer game optimization and its application on power flow and distribution generation placement problems of distribution systems

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