<![CDATA[ IEEE Transactions on Power Delivery - new TOC ]]>
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TOC Alert for Publication# 61 2018April 19<![CDATA[Table of Contents]]>333C11024122<![CDATA[IEEE Power & Energy Society]]>333C2C258<![CDATA[A New Methodology for Network Scale Simulation of Emerging Power Line Communication Standards]]>333102510341447<![CDATA[Localization of Partial Discharges Inside a Transformer Winding Using a Ladder Network Constructed From Terminal Measurements]]>33310351043943<![CDATA[A RankBoost-Based Data-Driven Method to Determine Maintenance Priority of Circuit Breakers]]>33310441053647<![CDATA[A High-Performance Multilayer Earth Parameter Estimation Rooted in Chebyshev Polynomials]]>33310541061551<![CDATA[Tuning CCVT Frequency Response Data for Improvement of Numerical Distance Protection]]>33310621070663<![CDATA[Interpretation of Hot Spot Factor for Transformers in OD Cooling Modes]]>H) is a crucial component of the thermal diagram in IEC 60076-2 to derive the hot-spot temperature from the test data. In this paper, H is expressed as the sum of two separable components, one relating to convection in the fluid domain and the other relating to conduction in the solid domain. Dimensional analyses on fluid flow and heat transfer show that both components are functions of dimensionless winding geometry, loss distribution, Re and Pr. The relationship between H and Re and Pr for a fixed winding geometry with uniform loss distribution is obtained by conducting computational fluid dynamics (CFD) parametric sweeps and multilayer least-square-based correlation. The correlation obtained is verified by the consistency between H from new CFD simulations and those from the correlation. For nonuniform loss distribution, when the hotspot is at the location of the highest power loss, H is in a linear relationship with Q and this linear relationship is coupled with a nonlinear relationship between H and Re and Pr.]]>333107110801008<![CDATA[Online Calibration of Phasor Measurement Unit Using Density-Based Spatial Clustering]]>333108110902546<![CDATA[Investigation of Thermal Behavior of an Oil-Directed Cooled Transformer Winding]]>333109110984659<![CDATA[Influence on Low-Voltage Surge Protective Devices of Overhead Distribution Lines Due to Nearby Return Strokes]]>333109911061199<![CDATA[Identifying Electric Shock in the Human Body via $alpha$ Dispersion]]>$alpha$ -dispersion characteristics of electrical impedance in the human body are investigated based on the Cole–Cole model. An improved electric shock identification method is proposed accordingly. The effects of various factors (e.g., transition resistance and feeder reactance) on the accuracy and reliability are analyzed. Feasibility and effectiveness of the method are verified via numerical simulation. The results indicate that 1) $alpha$-dispersion is an effective feature for distinguishing living or nonliving organisms; 2) the proposed method is robust and unaffected by transition resistance; and 3) the computational cost is low to satisfy standard leakage current protective device requirements. This paper provides a solution to the dead-zone problem as well as a set of workable guidelines for protective device design.]]>333110711141128<![CDATA[VFTO Suppression by Selection of a Combination of Initial Phase Angle and Contact Velocity]]>333111511231051<![CDATA[Economic Optimization of an Underground Power Cable Installation]]>33311241133626<![CDATA[Real-Time Evaluation of the Dynamic Loading Capability of Indoor Distribution Transformers]]>333113411421639<![CDATA[Evaluation of Low-Power Instrument Transformers for Generator Differential Protection]]>333114311521222<![CDATA[DC Voltage Regulation and Frequency Support in Pilot Voltage Droop-Controlled Multiterminal HVdc Systems]]>333115311642218<![CDATA[Modified DFT-Based Phasor Estimation Algorithms for Numerical Relaying Applications]]>333116511731006<![CDATA[Optimal Reliability Allocation of ±800 kV Ultra HVDC Transmission Systems]]>33311741184790<![CDATA[Modeling and Analysis of Asymmetrical Latency in Packet-Based Networks for Current Differential Protection Application]]>333118511932514<![CDATA[A Wavelet-Based Busbar Differential Protection]]>333119412031806<![CDATA[Use of Clustering to Reduce the Number of Different Setting Groups for Adaptive Coordination of Overcurrent Relays]]>k-means clustering technique to classify the topologies into some clusters, whose number is equal to the number of SGs. Then, for every topology cluster, the optimal settings are calculated and saved in the OCRs as a distinct SG to be activated by changing the topology to any member of the cluster. Applying this technique to OCRs of the IEEE 14-bus test network and a 63/20kV substation verifies its effectiveness on reserving coordination for all topologies and reducing the relays’ time dial setting. Using available communication links, this technique can be implemented by making a computer network between substations of the power network without needing to interact with the control center.]]>33312041212639<![CDATA[Reliability Modeling of MMCs Considering Correlations of the Requisite and Redundant Submodules]]>k/N(G) probability model. The effectiveness of the proposed approach is shown using different test cases.]]>333121312221136<![CDATA[Fault Analysis of Inverter-Interfaced Distributed Generators With Different Control Schemes]]>PQ control) and voltage control (V/F control and droop control), are under investigation to provide an intuitive comparison on fault current. In particular, a novel algorithm is proposed to calculate fault current of droop-controlled IIDGs. It is found that different limiters have great impacts on fault response of IIDGs and detailed research works are carried out to identify the effects in this paper. Simulation results based on PSCAD/EMTDC and calculation results based on MATLAB/Simulink verify the correctness of the proposed fault models.]]>333122312352314<![CDATA[Setting Zero-Sequence Compensation Factor in Distance Relays Protecting Distribution Systems]]>K _{0}). The latter issue is critical in order to guarantee correct relay operation during single-line ground faults. This paper examines the effect of K_{0} on the operation accuracy of distance relays protecting inhomogeneous distribution feeders. Theoretical analysis, as well as investigation of various influencing factors, result in the determination of a pattern, which relates relay accuracy to K_{ 0}. Based on this analysis, a simple methodology for setting K_{0} properly is proposed, which is implementable with commercially available relays. The methodology is applied on a test distribution feeder and meaningful conclusions are derived.]]>33312361246632<![CDATA[Laboratory Demonstration of Closed-Loop 30 kW, 200 V/900 V IGBT-Based LCL DC/DC Converter]]>LCL) dc/dc converter has been extensively studied for high power and stepping ratio because of elimination of internal transformer, lower footprint/weight, higher efficiency, and most importantly providing dc fault isolation from both dc sides. This paper presents a two-channel, two-layer controller including two inner current loops, which is symmetrical for each bridge of LCL dc/dc. The real-time implementation of the control scheme and its performance under normal conditions and during transient dc faults at both sides are studied on a 30 kW 200 V/900 V 1.7 kHz prototype. The prototype development is presented in some depth. The experimental results show that the converter with closed-loop control operates well at full power and under fast power reversal. Further dc fault testing concludes that there is no need for blocking since the internal voltage and current variables are within the rated values. Detailed study of converter losses is performed and results show that full power efficiency is around 93.4%.]]>333124712561650<![CDATA[Impact of Circulating Current Control in Capacitor Voltage Ripples of Modular Multilevel Converters Under Grid Imbalances]]>333125712672290<![CDATA[On the Dominant Harmonic Source Identification— Part I: Review of Methods]]>33312681277778<![CDATA[On the Dominant Harmonic Source Identification—Part II: Application and Interpretation of Methods]]>33312781287695<![CDATA[Shifted Frequency Modeling of Hybrid Modular Multilevel Converters for Simulation of MTDC Grid]]>$mu$s. In order to further improve the simulation accuracy with guaranteed simulation efficiency, the shifted frequency modeling of the half- and full-bridge hybrid MMC is proposed in this paper. Therein, each submodule is represented by Thévenin equivalents derived by submodule dynamic phasors. The arm of the MMC is represented by Norton equivalents to guarantee the efficiency, considering both normal and dc-blocking conditions. The effectiveness of the proposed model in terms of accuracy and efficiency is validated by simulating an MMC-based HVdc transmission.]]>333128812981769<![CDATA[High-Speed EMT Modeling of MMCs With Arbitrary Multiport Submodule Structures Using Generalized Norton Equivalents]]>33312991307963<![CDATA[Accurate Steady-State Mathematical Models of Arm and Line Harmonic Characteristics for Modular Multilevel Converter]]>33313081318682<![CDATA[Voltage Limit Control of Modular Multilevel Converter Based Unified Power Flow Controller Under Unbalanced Grid Conditions]]>333131913271717<![CDATA[Distributed PLL-Based Control of Offshore Wind Turbines Connected With Diode-Rectifier-Based HVDC Systems]]>333132813362499<![CDATA[Dynamic Electro-Magnetic-Thermal Modeling of MMC-Based DC–DC Converter for Real-Time Simulation of MTDC Grid]]>333133713472199<![CDATA[Fundamental-Frequency Reactive Circulating Current Injection for Capacitor Voltage Balancing in Hybrid-MMC HVDC Systems During Riding Through PTG Faults]]>333134813571835<![CDATA[A New Fault Location Technique in Smart Distribution Networks Using Synchronized/Nonsynchronized Measurements]]>${({mu} rm{PMUs)}}$ are installed along the network. However, a nonlinear least-squares problem solved by the trust-region-reflective algorithm is used when only the voltage magnitudes are provided by smart meters. The operation of the standard protective devices in the distribution networks is used to reduce the computational burden of the proposed method. Also, a generalized measurement placement algorithm is studied using the discovered features of the impedance matrix. In addition, the Sobol's sensitivity analysis is conducted to quantify the importance of different input factors on the fault location accuracy. The effectiveness of the proposed method is validated on a real 134-bus, 13.8 kV distribution network under several fault scenarios and noisy measurements.]]>33313581368851<![CDATA[Mechanism and Mitigation of Power Fluctuation Overvoltage for Ultrahigh Voltage Half-Wave Length Transmission System]]>333136913771232<![CDATA[Transient Characteristics Under Ground and Short-Circuit Faults in a ${pm text{500},text{kV}}$ MMC-Based HVDC System With Hybrid DC Circuit Breakers]]>${pm text{500},text{kV}}$ bipolar MMC-HVDC transmission (overhead line) project is first established. Then, the system transient characteristics are investigated involving permanent line-to-ground faults (LGFs), permanent short-circuit faults (SCFs), temporary LGFs, and temporary SCFs with either ac circuit breakers (ACCBs) or DCCBs in service. Finally, the performances, including the fault clearance and recovery, comparison of DCCBs with two different breaking methods, and comparison of ACCBs and DCCBs, in the MMC-HVDC system are presented. This paper provides a deep understanding of LGF and SCF in the MMC-HVDC systems, operation of DCCB, and comparison of faults clearance and recovery under these faults conditions using ACCB and DCCB, respectively. Results also benefit the application of the DCCB and the operation strategies in high-voltage and high-power MMC-HVDC systems with overhead lines.]]>333137813872720<![CDATA[Prediction of Bus-Transfer Switching in Future HVdc Substations]]>333138813971341<![CDATA[High-Sensitivity Vegetation High-Impedance Fault Detection Based on Signal's High-Frequency Contents]]>33313981407666<![CDATA[Power Grid Oscillation Identification Method in Multisource Oscillation Scenes]]>33314081417951<![CDATA[Resilient Protection System Through Centralized Substation Protection]]>333141814271302<![CDATA[A New Distance Protection Method Considering TCSC-FCL Dynamic Impedance Characteristics]]>333142814371851<![CDATA[Application of Resonance Analysis to AC–DC Networks]]>333143814473252<![CDATA[Commutation Failure Elimination of LCC HVDC Systems Using Thyristor-Based Controllable Capacitors]]>333144814582586<![CDATA[Gradient-Based Energy Balancing and Current Control for Alternate Arm Converters]]>333145914681366<![CDATA[Multiline Breaker for HVdc Applications]]>333146914781575<![CDATA[Fault Analysis and Traveling-Wave-Based Protection Scheme for Double-Circuit LCC-HVDC Transmission Lines With Shared Towers]]>333147914881279<![CDATA[Error Images for Estimating the Accuracy of Ground-Return Impedance Models]]>33314891491376<![CDATA[Primary Differential Pulse Method for Partial-Discharge Detection of Oil-Immersed Inverted Current Transformers]]>33314921494288<![CDATA[A Rapid Modal Analysis Method for Harmonic Resonance Using Modified Power Iteration]]>33314951497401<![CDATA[The Power of Information]]>33314981498999<![CDATA[Information for Authors]]>333C3C3120<![CDATA[Blank page]]>333C4C42