Nonlinear Load Harmonic Mitigation Strategies in Microgrids: State of the Art

Khan, Imran; Vijay, A. S.; Doolla, Suryanarayana

doi:10.1109/jsyst.2021.3130612

Cited by 30 publications

(8 citation statements)

References 143 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides that, the nonfundamental terms of microgrid load currents are compensated by shAPF. Therefore, the nonfundamental power term of shAPF (SNsh) is given by (7). Where THDiulX is total harmonic distortion of the current in the respective phase.…”

Section: Nonfundamental and Total Power Termsmentioning

confidence: 99%

“…It makes easier the control of the power system once the control of a group of loads and generation is centered in the UI converter. Besides that, it can be used to provide a regulated voltage in the microgrid side, improving the microgrid energy quality, and to provide ancillary functions to enhance the energy quality in the grid side [5] [7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Power Flow Numerical Assessment of a STATCOM iUPQC Utility Interface for Microgrids

Montagner¹,

Rech²,

Mezaroba³

2022

REPQJ

View full text Add to dashboard Cite

The dual unified power quality conditioner (iUPQC) is an active filter that has been studied to be applied as utility interface in microgrid applications. It regulates the voltage of the microgrid side and controls the power flow between the grid and microgrid side. Besides that, ancillary functions to grid side has been proposed to extend its power quality compensation. This paper presents a detailed analytical and numerical analysis of the power flow of an iUPQC, which operates as an utility interface in microgrid applications with the extended function of STATCOM. It can compensate not only the disturbances at the load or microgrid side but also provides a RMS voltage regulation at the Point of Common Coupling (PCC), thus, providing reactive power to the grid. Moreover, the iUPQC power flow is evaluated considering the implementation of the power angle control (PAC), a technique used to share and equalize the power processed by each converter allowing the optimization of this conditioner. Therefore, this study can support the understanding of the power flow of the iUPQC operating as STATCOM, in order to share and optimize the available power in the iUPQC converters using PAC.

show abstract

Section: Nonfundamental and Total Power Termsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Power Flow Numerical Assessment of a STATCOM iUPQC Utility Interface for Microgrids

Montagner¹,

Rech²,

Mezaroba³

2022

REPQJ

View full text Add to dashboard Cite

show abstract

“…ese harmonics can have a negative impact on the power system in a variety of ways, including power loss, a drop in power factor, equipment failure, wear and tear, and damage [11][12][13][14][15][16][17]. Several methods have been devised to address these issues, employing elements such as reactors, chokes, active power filters (APF), passive power filters (PPF), alternative transformer connections, and converters with greater pulse counts.…”

Section: Introductionmentioning

confidence: 99%

Passive Power Filter Optimization Problem Based on Adaptive Multipopulation NSGA-II and CRITIC-TOPSIS

Yuan

Liu

2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

The best configuration of passive filters in extra-high voltage systems is investigated in this study using a two-stage multiobjective decision-making (MODM) framework. A collection of Pareto solutions is found using an adaptive multipopulation-modified nondominated ranking genetic algorithm (AMP NSGA-II) in the first stage. The goals taken into account include the least fundamental reactive power compensation losses, overall cost and maintenance cost, and simultaneous minimum harmonic current distortion rate. The objective weights are determined and the optimum solution is chosen in the second stage using the criteria importance interrelationship (CRITIC) and similarity ranking preference technique (TOPSIS). A number of examples show how the suggested method performs more effectively than the conventional and well-known algorithm and can identify the relationship between the objective functions, indicating that the suggested scheme has better superiority in filters and has a promising future in the solution of multiobjective problems.

show abstract

“…The most significant reported negative impacts of EAFs include voltage fluctuations [1,2], transient overvoltages [3], protection systems maloperation [4], power fluctuation [5][6][7], torsional vibrations [7,8] and mechanical oscillations of nearby generators shafts [9]. To resolve these issues, various solutions have been proposed such as using reactive power compensation devices, application of static VAR compensators (SVCs), active power filters, flexible AC transmission systems and energy storage systems [4,10,11]. It should be noted that the application of reactive power compensation devices and their control methods are more considered in the research works.…”

Section: Introductionmentioning

confidence: 99%

Governor controller improvement to enhance SSSG performance in presence of electrical arc furnace

Bekhradian

Sanaye‐Pasand

Davarpanah

et al. 2022

IET Generation Trans & Dist

View full text Add to dashboard Cite

Electrical Arc Furnaces (EAFs) consume time‐varying power. This causes mechanical torque variations in the nearby small scale synchronous generators (SSSGs) and reduces their life expectancy. In this paper, an appropriate EAF model is implemented and verified by using field measurements. Moreover, an actual distribution system to which an SSSG is connected to supply industrial loads including an EAF is investigated based on time‐domain simulation studies. To enhance dynamic performance of the SSSG adjacent to an EAF load, two novel approaches are presented in this paper. The first method is utilized for proper adjustment of governor controller parameters. Analytical and simulation‐based studies are accomplished to determine proper parameters of the SSSG conventional governor controller to mitigate the mechanical oscillations caused by EAF. These comprehensive investigations reveal that the governor PI controller proportional parameter should be adjusted as small as possible to mitigate the SSSG oscillations; while, the oscillations are fairly independent of integrator parameter. Besides, the integrator parameter should be set as high as possible to improve the SSSG dynamic performance. Moreover, a new modified SSSG governor controller including steady‐state and transient control loops is developed and a novel control strategy is proposed to enhance steady‐state and transient performance of SSSG. Finally, robustness and effectiveness of the proposed controller and its parameters are investigated using field measured EAF current signals for various transients. It should be noted that the proposed strategies of this paper can be also applied to similar cases where a nonlinear time varying load is connected to an SSSG.

show abstract

Nonlinear Load Harmonic Mitigation Strategies in Microgrids: State of the Art

Cited by 30 publications

References 143 publications

Power Flow Numerical Assessment of a STATCOM iUPQC Utility Interface for Microgrids

Power Flow Numerical Assessment of a STATCOM iUPQC Utility Interface for Microgrids

Passive Power Filter Optimization Problem Based on Adaptive Multipopulation NSGA-II and CRITIC-TOPSIS

Governor controller improvement to enhance SSSG performance in presence of electrical arc furnace

Contact Info

Product

Resources

About