A Series-Connected Photovoltaic Distributed Generator Capable of Enhancing Power Quality

Saadat, Nima; Choi, S.S.; Vilathgamuwa, D.M.

doi:10.1109/tec.2013.2278379

Cited by 24 publications

(19 citation statements)

References 20 publications

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“…In order to confirm the above mentioned work, a modest single phase system is established and verified for different voltage sag/swell disorders. To authenticate the performance of Type-2 FLC, it is analysed with two cases and compared with traditional controller techniques [17,18]. From the paper [17,18], power quality features are improved with the help of PI controller and ANFIS (Adaptive Neuro Fuzzy Inference System) controller.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…To authenticate the performance of Type-2 FLC, it is analysed with two cases and compared with traditional controller techniques [17,18]. From the paper [17,18], power quality features are improved with the help of PI controller and ANFIS (Adaptive Neuro Fuzzy Inference System) controller. The results from those papers are compared with the proposed technique in the below mentioned comparison table 1.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

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A Novel Architecture for Series-Connected Photovoltaic Distributed System with Enhanced Power Quality Using Type-II Fuzzy Controller

Seshadri¹,

Marutheswar²

2018

IJIES

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Abstract:In recent trends, emerging use of Renewable Energy Sources (RES) in the electricity grid has produced new provocations for the effectiveness concerning the features of power quality (PQ), effective energy consumption and voltage maintenance. Most probably, PQ problems and modification have appeared as serious tasks and problems facing electrical services and residential/commercial/industrial users. So, in this paper, Photo Voltaic (PV) generator serves as the main source for improving Power Quality features. The control strategy for the PV generator is designed from Type-2 Fuzzy Logic Controller (FLC). Thus, PQ has to turn out to be more and more severe problem with every single passing day. Most of the applications are worked with high uncertainties. Type-2 FLC have the capability to capture the uncertainties about membership functions of fuzzy sets. Also, it is used to handle these type of problems in group decision making process. As a result, Type-2 FLC provides much more and a lot of attention due to tremendous reactive power and harmonic compensation in this system. For the different voltage instability, PV generator is controlled to cancel out of them. The performance measurement of the PV generator with Type-2 FLC for PQ improvement is validated in MATLAB/Simulink, which show the value of Total Harmonic Distortion (THD) is 0.9103%, power factor is unity and injected values for sag/swell gets better results compared to a traditional technique.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Simulation Results and Discussionmentioning

confidence: 99%

A Novel Architecture for Series-Connected Photovoltaic Distributed System with Enhanced Power Quality Using Type-II Fuzzy Controller

Seshadri¹,

Marutheswar²

2018

IJIES

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“…Since the location of PV arrays may have an impact on the optimization results, two configurations are thus studied for comparison. In the first configuration, the PV arrays are connected to the buses {2, 5,6,9,10,13,33,35,40,55,66,78,91,92,106,121,119,118,104, 107} and in the other configuration, the PV arrays are connected to the buses {5, 16, 29, 33, 46, 43, 41, 59, 96, 92, 90, 88, 64, 83, 79, 75, 71, 118, 104, 107}. Fig.…”

Section: B 123-bus Test Systemmentioning

confidence: 99%

“…In [6] and [7], combining energy storage and PV generation to facilitate scalable plants was studied. It was [8] and [9] that investigated the power quality issues of PV power plants, such as voltage dips and supply interruptions. While [10]- [13] focused on the study of the current harmonic distortion from PV-inverter integration.…”

Section: Introductionmentioning

confidence: 99%

A Two-Stage Robust Optimization for Centralized-Optimal Dispatch of Photovoltaic Inverters in Active Distribution Networks

Ding

Yang

et al. 2017

IEEE Trans. Sustain. Energy

176

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Optimally dispatching Photovoltaic (PV) inverters is an efficient way to avoid overvoltage in active distribution networks, which may occur in the case of PV generation surplus load demand. Typically, the dispatching optimization objective is to identify critical PV inverters that have the most significant impact on the network voltage level. Following, it ensures the optimal set-points of both active power and reactive power for the selected inverters, guaranteeing the entire system operating constraints (e.g., the network voltage magnitude) within reasonable ranges. However, the intermittent nature of solar PV energy may affect the selection of the critical PV inverters and also the final optimal objective value. In order to address this issue, a two-stage robust centralized-optimal dispatch model is proposed in this paper to achieve a robust PV inverter dispatch solution considering the PV output uncertainties. In addition, the conic relaxation-based branch flow formulation and the column-and-constraint generation (CCG) algorithm are employed to deal with the proposed robust optimization model. Case studies on a 33-bus distribution network and comparisons with the deterministic optimization approach have demonstrated the effectiveness of the proposed method.  Index Terms-Two-stage robust optimization; optimal inverter dispatch (OID); column-and-constraint generation algorithm; active distribution network; photovoltaic generation NOMENCLATURE Parameters B Set of buses E Set of branches V Set of buses without installed PV systems J Set of buses with installed PV systems |J| Cardinality of J r ij , x ij Resistance/reactance of branch (i, j) b s,j Shunt susceptance from j to ground

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“…Therefore, the modernization of the 11 kV and 400 V distribution network is critical to integrate non-conventional renewable energies, DG and EVs without losing reliability, power quality and efficiency. Possible solutions are to engage the management of DG and EVs connections [2], add mesh connection to radial feeders [3], use active compensation or energy storage systems [4], and implement soft-open-points (SOPs) to obtain a soft meshed distribution network with power-flow-control [5], [6].…”

Section: Introductionmentioning

confidence: 99%

Direct Modular Multilevel Converter With Six Branches for Flexible Distribution Networks

Pereda

Green

2016

IEEE Trans. Power Delivery

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This paper presents a complete analysis of a direct ac-to-ac modular multilevel converter (direct MMC) applied in medium voltage distribution networks through the soft-openpoint concept. The direct MMC is capable of bidirectional power flow between two feeders at any power factor, even when the feeders have different nominal voltages and operate with a phase shift angle or unbalanced voltages. The converter has six branches, each one composed of full H-bridges cells connected in series to generate a multilevel voltage waveform, to share the blocking voltage of the power switches and to have fault tolerant operation.This paper presents a suitable control scheme and provides a discussion about the capabilities and limitations of the converter, the capacitor voltage balance control, the efficiency and the power loss mitigation at various operation points. Simulation results and power loss calculations are presented for a threephase 11 kV 16 MVA direct MMC with 10 H-bridge cells per branch. The direct MMC is simulated in a distribution network to demonstrate the features of the converter and control under various operation conditions, including grid faults. Index Terms-Direct power conversion, AC-AC power converters, matrix modular multilevel converters, soft open point (SOPs), power-flow controller, grid connected converters.

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A Series-Connected Photovoltaic Distributed Generator Capable of Enhancing Power Quality

Cited by 24 publications

References 20 publications

A Novel Architecture for Series-Connected Photovoltaic Distributed System with Enhanced Power Quality Using Type-II Fuzzy Controller

A Novel Architecture for Series-Connected Photovoltaic Distributed System with Enhanced Power Quality Using Type-II Fuzzy Controller

A Two-Stage Robust Optimization for Centralized-Optimal Dispatch of Photovoltaic Inverters in Active Distribution Networks

Direct Modular Multilevel Converter With Six Branches for Flexible Distribution Networks

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