An Extension of FBS Three-Phase Power Flow for Handling PV Nodes in Active Distribution Networks

Ju, Yuntao; Wu, Wenchuan; Zhang, Boming; Sun, Hongbin

doi:10.1109/tsg.2014.2310459

Cited by 71 publications

(35 citation statements)

References 20 publications

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“…CIGRE 6‐bus system is used for model validation. In accordance with Kamh and Iravani, Ju et al propose 2 cases of a PV bus type for the power flow modeling of unbalanced distribution networks. The voltages of a DER are maintained symmetrical in the first case and the currents in the second case.…”

Section: Introductionmentioning

confidence: 98%

New bus classification and unbalanced power flow of large-scale networks with electronically interfaced energy resources

Strezoski

Vojnović

Vidović

2017

Int Trans Electr Energ Syst

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Summary The nature of transmission and distribution networks has drastically changed over the last several decades, due to a high penetration of electronically interfaced energy resources (EIERs). Consequently, the complexity of the operation and the management of these networks have considerably increased. This strongly affected the energy management systems and distribution management systems, especially the power flow calculation as their basic power application. Electronically interfaced energy resources can employ a wide range of control strategies that cannot be represented with traditional single‐phase bus types used for traditional alternating current machines in a symmetrical operation. Power flow is the main subject of this paper, and the main objectives are as follows: (i) to prove that the traditional bus classification—θV (slack bus), PQ, and PV—is not sufficient for an unbalanced power flow formulation and the calculation of emerging large‐scale unbalanced electric networks containing traditional alternating current machines and particularly EIERs; (ii) to introduce a new bus classification suitable for the power flow modeling and calculation of these networks; and (iii) to present a robust and accurate unbalanced power flow method based on the new bus classification and a bus type inspection principle. Numerical tests show that the developed power flow method can be successfully applied in the on‐line calculation mode of both energy management system and distribution management system dealing with large‐scale networks.

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Section: Introductionmentioning

confidence: 98%

New bus classification and unbalanced power flow of large-scale networks with electronically interfaced energy resources

Strezoski

Vojnović

Vidović

2017

Int Trans Electr Energ Syst

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“…It is not unusual to find DC traction systems forming rings or other more complex meshed configurations, and the BFS methods were designed to be used with radial systems. Some authors already proposed solutions for using modified BFS methods in electrical meshed systems [13]- [16]. The second reason has to do with the use of complex loads or generators models in BFS methods.…”

Section: Introductionmentioning

confidence: 99%

“…The second reason has to do with the use of complex loads or generators models in BFS methods. Most of the studied papers deal with constant impedance and constant power loads or generators, but it has been demonstrated that even PV generators and voltage dependent loads can be embedded in these sort of solvers [13], [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

BFS Algorithm for Voltage-Constrained Meshed DC Traction Networks With Nonsmooth Voltage-Dependent Loads and Generators

Arboleya

Belaid

González-Morán

et al. 2016

IEEE Trans. Power Syst.

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Abstract-In this paper a new procedure based on a Backward/forward sweep (BFS) algorithm for solving power flows in weakly meshed DC traction networks is presented. The proposed technique is able to consider the trains as non-linear and nonsmooth (non-differentiable) voltage dependent loads or generators. This feature permits the inclusion of the trains overcurrent protection and the squeeze control. With the use of the mentioned controls, the conventional power flow problem becomes a voltage constrained power flow problem, and the interaction between the trains and the network can be accurately modeled. However, the train control induces a highly non-smooth voltage dependent load characteristics, causing convergence problems in most of the derivative based algorithms. The proposed algorithm is faster, more robust and stable than the derivative based ones. In addition, the authors present all the formulation in a compact matrix based form by means of the graph theory application and the node incident matrix.

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“…Load flow algorithm of Gridlab-D [5] encounters the similar problem. So fixed point iteration is not a suitable method to handle voltage controlled DGs, a newton approach proposed is presented in [6] to cope with this. Other open source work [7] has given a introduction on using Modelica language to analyze AC circuits while it can not cope with unbalanced distribution system.…”

Section: Introductionmentioning

confidence: 99%

ADN_Modelica: An Open Source Sequence-Phase Coupled Frame Program for Active Distribution Network Steady State Analysis

Lin

et al. 2016

Preprint

Self Cite

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Abstract:Open source software such as OpenDSS has given a lot of help to distribution network researchers and educators. With high penetration of distributed renewable energy resources into distribution network, tradition distribution steady state analysis software such as OpenDSS is faced with difficulty in handling distributed generators. Three-phase distributed generators are often modeled in sequence frame while unbalanced distribution network are usually modeled in phase frame. So a load flow in sequence-phase coupled frame is proposed to handle models described in both frames. Voltage controlled DGs which are difficult to cope with in OpenDSS are handled in proposed program. The steady state analysis platform is programmed with open source Modelica language and the main aim of this paper is to introduce an open source platform for active distribution network steady analysis include load flow and short circuit analysis which can be easily adopted and improved by other educators and researchers.

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An Extension of FBS Three-Phase Power Flow for Handling PV Nodes in Active Distribution Networks

Cited by 71 publications

References 20 publications

New bus classification and unbalanced power flow of large-scale networks with electronically interfaced energy resources

New bus classification and unbalanced power flow of large-scale networks with electronically interfaced energy resources

BFS Algorithm for Voltage-Constrained Meshed DC Traction Networks With Nonsmooth Voltage-Dependent Loads and Generators

ADN_Modelica: An Open Source Sequence-Phase Coupled Frame Program for Active Distribution Network Steady State Analysis

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