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Adaptive Modular Multilevel Converter Model for Electromagnetic Transient Simulations

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (2)

This paper proposes an adaptive model of modular multilevel converter (MMC) for electromagnetic transient (EMT) simulations. The model is applicable t......

Impact of Inverter-Based Resources on Negative Sequence Quantities-Based Protection Elements

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (1)

Inverter-Based Resources (IBRs), including Wind turbine generators (WTGs), exhibit substantially different negative-sequence fault current characteris......

An Adaptive Fault Current Limiting Control for MMC and Its Application in DC Grid

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (2)

This paper proposes an adaptive fault current limiting control (AFCLC) for modular multilevel converters (MMC). Without introducing extra current limi......

HVAC Corona Current Characteristics and Audible Noise During Rain

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (1)

Corona Audible Noise is a major factor regarding the public acceptance of overhead lines. In this article, 2-conductor bundle is used to study the inf......

Decaying DC and Harmonic Components Detection for Absorbing Impact Load Currents in Weak Grids

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (3)

Decaying DC (DDC) current due to impact loads causes detrimental consequences in weak grids. In this paper, the active power filter (APF) is enhanced ......

Small-Signal Stability Enhancement Approach for VSC-HVDC System Under Weak AC Grid Conditions Based on Single-Input Single-Output Transfer Function Model

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (3)

The voltage source converter (VSC) system has stability issue under weak AC grid conditions. In this paper, the multi-input multi-output (MIMO) transf......

A Multi-Objective Control Strategy for Three Phase Grid-Connected Inverter During Unbalanced Voltage Sag

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (4)

This paper presents a new multi-objective control strategy for inverter-interfaced distributed generation (IIDG) to ensure its safe and continuous ope......

An Improved DC Fault Protection Scheme Independent of Boundary Components for MMC Based HVDC Grids

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (4)

For modular multilevel converter (MMC) based DC grids, current-limiting reactors (CLRs) are mainly employed to suppress the fault current and provide ......

Impact of Propagation Losses on Fault Location Accuracy in Full Transient-Based Methods

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (1)

This paper studies how propagation and termination losses affect full transient-based fault location techniques. Their accuracy is discussed in terms ......

Calculation of DC Bias Reactive Power Loss of Converter Transformer via Finite Element Analysis

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (2)

This paper proposes a novel and applicable approach to calculate the reactive power loss of converter transformer under dc bias. By using this propose......

A Practical Approach to Estimate Harmonic Distortions in Residential Distribution System

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (3)

Harmonic pollutions in residential distribution system has become an emerging concern for utility companies. It is however difficult for the utility t......

Reliability Modeling and Analysis of Hybrid MMCs Under Different Redundancy Schemes

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (3)

The hybrid modular multilevel converter (HMMC), consisting of half-bridge and full-bridge submodules (SMs), has become a competitive topology due to t......

Evaluating Strength of Hybrid Multi-Infeed HVDC Systems for Planning Studies Using Hybrid Multi-Infeed Interactive Effective Short-Circuit Ratio

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (4)

The strength is an important concept in planning studies for voltage stability analysis of hybrid multi-infeed HVDC (HMIDC) systems, which include bot......

A Multi-State Model for Transmission System Resilience Enhancement Against Short-Circuit Faults Caused by Extreme Weather Events

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (4)

Due to global climate change, the effect of extreme weather on power systems has attracted extensive attention. In the prior-art grid resilience studi......

Transformer Winding Fault Diagnosis Using Vibration Image and Deep Learning

期刊: IEEE TRANSACTIONS ON POWER DELIVERY, 2021; 36 (2)

Winding condition assessment is an essential task for operating transformers, and the vibration method provides a low-cost and non-intrusive approach.......

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