A generalized power flow analysis for distribution systems with high penetration of distributed generation

Farag, Hany E. Z.; El-Saadany, Ehab F.; Shatshat, Ramadan El; Zidan, Aboelsood

doi:10.1016/j.epsr.2011.03.001

Cited by 86 publications

(41 citation statements)

References 18 publications

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“…In this paper constant power load model has been considered for modeling the behavior of loads of the power system networks [21,22]. The Objective Function parameter settings for optimization are shown in Table 2 [27,28].…”

Section: Resultsmentioning

confidence: 99%

DSTATCOM allocation in distribution networks considering load variations using bat algorithm

Yuvaraj

Ravi

Devabalaji

2017

Ain Shams Engineering Journal

166

101

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This paper proposes a new method of scheduling for optimal placement and sizing of Distribution STATic COMpensator in the radial distribution networks to minimize the power loss. In the proposed method Voltage Stability Index is used to search the optimal placement for installation of DSTATCOM. Optimal size of DSTATCOM is found by using bat algorithm. The feeder loads are varied by linearly from light load to peak load with a step size of 1%. In each load step, the optimal placement and sizing for DSTATCOM are calculated. By using the Curve Fitting Technique, the optimal sizing for DSTATCOM per load level is formulated in the form of generalized equation. The proposed approach will help the Distribution Network Operators to select the DSTATCOM size according to the load changes. To check the feasibility of the proposed method, system has been tested on two standard buses such as IEEE 33 and 69 bus radial distribution systems.Ó 2015 Faculty of Engineering, Ain Shams University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Section: Resultsmentioning

confidence: 99%

DSTATCOM allocation in distribution networks considering load variations using bat algorithm

Yuvaraj

Ravi

Devabalaji

2017

Ain Shams Engineering Journal

166

101

View full text Add to dashboard Cite

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“…In this paper, the backward-forward sweep method presented on [18] is applied. It consists on a three-phase approach applying phase components and considering mutual impedances between them.…”

Section: A Load Flow In Distribution Systemsmentioning

confidence: 99%

Distribution system reconfiguration using artificial immune systems

Alonso¹,

Oliveira

Souza

et al. 2014

2014 North American Power Symposium (NAPS)

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Power losses minimization is a goal for electricity utilities and distribution system reconfiguration is one of the available tools to accomplish it. Reconfiguring the network means altering its topology by changing the status of normally opened and normally closed switches. Besides power losses minimization, network reconfiguration also helps on load balance and service restoration. This paper proposes the use of artificial immune systems to optimize the distribution system reconfiguration by minimizing the switching operations and active power losses, considering as constraints the radial characteristics of the distribution networks and feeders' ampacity. The proposed algorithm is tested on a sample system, 14-Bus Test System, and on a Paraguayan real feeder.

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“…In addition, power flow studies using conventional simplified DG model [5][6][7][8][9] were conducted to show the improvement in accuracy by the proposed method. In the simplified DG model, the three-phase power outputs of the DG are equally divided into each phase, regardless of the voltage of the DG-connected bus.…”

Section: Verification Of Accuracymentioning

confidence: 99%

“…Various DG models for unbalanced three-phase power flow studies have been proposed. In [5][6][7][8][9], a three-phase connected DG that operates in constant reactive power mode was modeled as a negative constant power load. However, this is not appropriate, since the phase outputs of a DG depend on the phase voltages under unbalanced operating conditions [10].…”

Section: Introductionmentioning

confidence: 99%

A Vector-Controlled Distributed Generator Model for a Power Flow Based on a Three-Phase Current Injection Method

2013

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This paper proposes a vector-controlled distributed generator (DG) model for a power flow based on a three-phase current injection method (TCIM). In order to represent the DG models in the power flow, steady-state phase current output equations are formulated. Using these equations, the TCIM power flow formulation is modified to include the DG models. In the proposed power flow, a DG-connected bus is modeled as either a load bus (PQ bus) or a voltage-controlled bus (PV bus), depending on the control mode of the reactive power. However, unlike conventional bus models, the values of the DG-connected bus models are represented by three-phase quantities: three-phase active and reactive power output for a PQ bus, and three-phase active power and positive-sequence voltage for a PV bus. In addition, a method is proposed for representing the reactive power limit of a voltage-control-mode DG by using the q-axis current limit. Utilizing a modified IEEE 13-bus test system, the accuracy of the proposed method is verified by comparison to the power systems computer aided design (PSCAD) model. Furthermore, the effect of the number of DGs on the convergence rate is analyzed, using the IEEE 123-bus test system.

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A generalized power flow analysis for distribution systems with high penetration of distributed generation

Cited by 86 publications

References 18 publications

DSTATCOM allocation in distribution networks considering load variations using bat algorithm

DSTATCOM allocation in distribution networks considering load variations using bat algorithm

Distribution system reconfiguration using artificial immune systems

A Vector-Controlled Distributed Generator Model for a Power Flow Based on a Three-Phase Current Injection Method

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