Three-phase power-flow by direct ZBR method for unbalanced radial distribution systems

Chen, T.-H.; Yang, Nien-Che

doi:10.1049/iet-gtd.2008.0616

Cited by 59 publications

(40 citation statements)

References 10 publications

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“…Two common frame of reference-based power flow algorithms are used in distribution networks: the Gauss and Newton-Raphson algorithms based on bus frame of reference are common techniques used for power flow solutions [20][21][22][23][24]; besides, other algorithms based on branch frame of reference were adopted for solving unbalanced power flows [25][26][27][28]. Graph theory and the backward/forward sweep method [25,26] were applied in the proposed power flow algorithm. Graph theory is a systematic approach to build incidence matrices that correspond to network topologies.…”

Section: Power Flow Algorithmmentioning

confidence: 99%

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

Huang

Chen

et al. 2015

Energies

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This study aimed to minimize energy losses in traditional distribution networks and microgrids through a network reconfiguration and phase balancing approach. To address this problem, an algorithm composed of a multi-objective function and operation constraints is proposed. Network connection matrices based on graph theory and the backward/forward sweep method are used to analyze power flow. 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. The proposed approach is tested on the IEEE 37-bus test system and the first outdoor microgrid test bed established by the Institute of Nuclear Energy Research (INER) in Taiwan. Simulation results demonstrate that the proposed two-stage approach can be applied in network reconfiguration to minimize energy loss.

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Section: Power Flow Algorithmmentioning

confidence: 99%

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

Huang

Chen

et al. 2015

Energies

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“…Not only because of these systems are directly connected to the consumers, but also these systems have unique characteristics in comparison with transmission systems such as unbalanced loads, high resistance-to-reactance (R/X) ratios, single-or two-phase lines, radial topology, etc. Therefore, three-phase power flow methods have been developed for the past twenty years and can be broadly classified into four categories, which are Bus Impedance methods [1], Newton-type methods [2]- [3], Forward-Backward (FB) and its variations [4]- [7], and Sequential Power Flow (SPF) methods [8]- [11].…”

Section: Introductionmentioning

confidence: 99%

“…The improved backward/ forward sweep method is one of the more practical ways of finding values of voltage profile. In [13], Chen et al had introduced a novel three-phase power flow One study by Teng [14] examined the trend in modeling distributed generations in three-phase distribution load flow. In power-flow development, to analyse and simulate the penetrations of DG's have been integrated into three-phase distribution system.…”

Section: Introductionmentioning

confidence: 99%

Power-Flow Development Based on the Modified Backward-Forward for Voltage Profile Improvement of Distribution System

Suyanto¹,

Rahmadhani²,

Penangsang³

et al. 2016

IJECE

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Unbalanced three-phase radial distribution system has a complex problem in power system. It has many branches and it is sometimes voltage profile's not stable at every end branches. For improvement of voltage profile, it can be performed by penetrating of a distributed generation models. Information of voltage profile can be gained by study of power flow. The Modified Backward-Forward is one of the most widely used methods of development of power flow and has been extensively used for voltage profile analysis. In this paper, a study of power flow based on the Modified Backward-Forward method was used to capture the complexities of unbalanced three phase radial distribution system in the 20 kV distribution network in North Surabaya city, East Java, Indonesia within considering distributed generation models. In summary, for the informants in this study, the Modified Backward-Forward method has had quickly convergence and it's just needed 3 to 5 iteration of power flow simulation which's compared to other power flow development methods. Distributed Generation models in the modified the modified 34 BUS IEEE system and 20 kV distribution network has gained voltage profile value on limited range. One of the more significant findings to emerge from this development is that the Modified BackwardForward method has average of error voltage about 0.0017 % to 0.1749%. Keyword:Power flow development Modified backward-forward Voltage profile Distributed generation models

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“…A new method to extract all possible radial configurations in a weakly meshed power system using graph based search methods is proposed in [1]. In [14] a three-phase distribution power flow solution for unbalanced radial distribution systems has been developed based on graph theory. A solution for coordinating large-scale multi-agent systems is presented in [21], and in [15] graph theory is used to deploy multiple layers of multi-agent systems to protect sub-systems around identified loads in a power system.…”

Section: Introductionmentioning

confidence: 99%

On the Use of Graph Theory for Railway Power Supply Systems Characterization

2015

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Over the years, graph theory has proven to be a key tool in power systems modeling and analysis. In this paper, the authors propose a systematic method for railway power supply systems (RPSS) description that can be applied to any AC/DC system. This method represents the different elements of the RPSS with a set of subgraphs. Merging these subgraphs, the representative graph of the whole RPSS and its associated adjacency and incidence matrices will be obtained. Once these matrices are obtained, Kirchhoff's laws can be easily implemented. In this work, the method is applied to a DC light traction system. The AC system that feeds the traction network through power transformers combined with rectifiers is also included. With the proposed approach, the variability problems in the system topology and dimensions are overcome, obtaining an invariant system, even when the trains change their relative position, or when a new train enters into or exits the system.

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Three-phase power-flow by direct ZBR method for unbalanced radial distribution systems

Cited by 59 publications

References 10 publications

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

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

Power-Flow Development Based on the Modified Backward-Forward for Voltage Profile Improvement of Distribution System

On the Use of Graph Theory for Railway Power Supply Systems Characterization

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