Reducing of total harmonic distortion by simulating passive filters to suppress harmonic currents with the case: Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta

Abstract Today’s electrical appliances use power electronics to save electricity. However, this equipment generates non-sinusoidal current, causing wave defect, expressed as total harmonic distortion (THD). As the %THD increases, the greater risk of equipment damage. For this reason, the research was carried out in the Faculty of Engineering Building, Universitas Kristen Indonesia Jakarta (FT UKI Jakarta) where there are many load combinations such as computers, various types of lights, laboratory equipment such as transformers, electric motors and so on. The research was conducted using quantitative method. Data collection is carried out directly in the main panel. Based on the measurement results, the calculation of the maximum load current (IL) and short circuit (ISC) is carried out. Through these values, it can be seen that whether the odd dominant harmonic values and orders meets the IEEE 519-2014 standards or not. Calculations and analysis of the measurement results have shown that the %THDI in the FT UKI building has not meet the standard. Therefore, it is necessary to simulate the filter design to reduce the %THDI, so that the results can meets the IEEE 519-2014 standard, which is below 5%.

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Reducing of total harmonic distortion using passive filter simulation to suppress harmonic currents with the case: General Hospital, Universitas Kristen Indonesia Jakarta

IOP Conference Series Earth and Environmental Science ◽

10.1088/1755-1315/878/1/012061 ◽

2021 ◽

Vol 878 (1) ◽

pp. 012061

Author(s):

D Elfando ◽

E M Silalahi ◽

S Stepanus ◽

B Widodo ◽

R Purba

Keyword(s):

Filter Design ◽

Harmonic Distortion ◽

Electrical Energy ◽

Electrical Equipment ◽

Harmonic Currents ◽

Technological Advances ◽

Harmonic Filter ◽

Measurement Results ◽

Non Linear ◽

Standard Value

Abstract With the increasing need for and use of electrical energy amid increasingly rapid technological advances, especially in the use of electronic equipment in hospitals, it is necessary to pay attention to the problem of harmonics due to the use of non-linear electrical equipment. Therefore, it is necessary to measure the current and voltage THD for each non-linear equipment user. If the current and voltage THD values do not meet the standards, then a filter design is carried out so that the THD values meet the standards. Based on the results of THD measurements on the Main Distribution Panel (MDP) of RSU UKI, it was found that the THD of the voltage varied between 0.7877% - 2.4363% and the current THD varied between 5.3073% - 9.2363%. The measured THD value refers to the IEEE 519-2014 standard. If the THD value of the measurement results exceeds the IEEE 519-2014 standard, a harmonic filter is needed. With the simulated single tuned filter design, the current THD decreases within the standard value. The THD value of the current after installing the filter at the three MDP’s of the RSU UKI, namely MDP A of 1.72%, MDP B of 0.64% and MDP C of 1.30%.

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LCL-filter design for grid-connected PCS using total harmonic distortion and ripple attenuation factor

The 2010 International Power Electronics Conference - ECCE ASIA - ◽

10.1109/ipec.2010.5542131 ◽

2010 ◽

Cited By ~ 25

Author(s):

Min-Young Park ◽

Min-Hun Chi ◽

Jong-Hyoung Park ◽

Heung-Geun Kim ◽

Tae-Won Chun ◽

...

Keyword(s):

Filter Design ◽

Attenuation Factor ◽

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Lcl Filter

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A study on randomly varying harmonic currents and total harmonic distortion of currents in power systems

2005 International Conference on Future Power Systems ◽

10.1109/fps.2005.204312 ◽

2005 ◽

Cited By ~ 1

Author(s):

Li Wang ◽

Kuo-Hua Liu

Keyword(s):

Power Systems ◽

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Harmonic Currents

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Impact of Harmonic Currents of Nonlinear Loads on Power Quality of a Low Voltage Network–Review and Case Study

Energies ◽

10.3390/en14123665 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3665

Author(s):

Łukasz Michalec ◽

Michał Jasiński ◽

Tomasz Sikorski ◽

Zbigniew Leonowicz ◽

Łukasz Jasiński ◽

...

Keyword(s):

Power Quality ◽

Low Voltage ◽

Harmonic Distortion ◽

Experimental Tests ◽

Total Harmonic Distortion ◽

Quality Analysis ◽

Nonlinear Loads ◽

Distortion Factor ◽

Harmonic Currents

The paper presents a power-quality analysis in the utility low-voltage network focusing on harmonic currents’ pollution. Usually, to forecast the modern electrical and electronic devices’ contribution to increasing the current total harmonic distortion factor (THDI) and exceeding the regulation limit, analyses based on tests and models of individual devices are conducted. In this article, a composite approach was applied. The performance of harmonic currents produced by sets of devices commonly used in commercial and residential facilities’ nonlinear loads was investigated. The measurements were conducted with the class A PQ analyzer (FLUKE 435) and dedicated to the specialized PC software. The experimental tests show that the harmonic currents produced by multiple types of nonlinear loads tend to reduce the current total harmonic distortion factor (THDI). The changes of harmonic content caused by summation and/or cancellation effects in total current drawn from the grid by nonlinear loads should be a key factor in harmonic currents’ pollution study. Proper forecasting of the level of harmonic currents injected into the utility grid helps to maintain the quality of electricity at an appropriate level and reduce active power losses, which have a direct impact on the price of electricity generation.

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An Innovative Fuzzy Based Power Quality Assessment Considering Short Circuit Level

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.d4461.118419 ◽

2019 ◽

Vol 8 (4) ◽

pp. 10249-10252

Keyword(s):

Power Quality ◽

Quality Index ◽

Quality Evaluation ◽

Fuzzy Inference ◽

Short Circuit ◽

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Quality Indices ◽

Inference System ◽

Pollution Factor

power quality evaluation is highly essential for modern power system to maintain proper accuracy for responsive equipment. There are various power quality indices which evaluates the power quality but it is highly crucial for combining all the indices into a single value which can evaluates the power quality successfully. Considering representative quality factor(RQPF), detailed pollution factor(DPF),total harmonic distortion(THD) and short circuit level(SCL)an untraditional power quality index can be evaluated. Fuzzy inference system has been implemented for doing the incorporation of different power quality indices. In this paper THD module is formed by the union of total harmonic distortion voltage(THDV) and total harmonic distortion current(THDI ) and THDSCL module is formed by the fusion of THD and SCL. The innovative THDSCL has better significance for measuring power quality Index

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Total harmonic distortion of an asymmetric quasi-sinusoidal current

MATEC Web of Conferences ◽

10.1051/matecconf/201710201018 ◽

2017 ◽

Vol 102 ◽

pp. 01018

Author(s):

Vitaliy Grebennikov ◽

Irina Ermoeva ◽

Evgeniy Yaroslavtsev

Keyword(s):

Harmonic Distortion ◽

Total Harmonic Distortion ◽

Sinusoidal Current

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Fast Adaptive Robust Differentiator Based Robust-Adaptive Control of Grid-Tied Inverters with a New L Filter Design Method

Energies ◽

10.3390/en13020360 ◽

2020 ◽

Vol 13 (2) ◽

pp. 360

Author(s):

Tariq Kamal ◽

Murat Karabacak ◽

Fuat Kilic ◽

Frede Blaabjerg ◽

Luis M. Fernández-Ramírez

Keyword(s):

Control System ◽

Filter Design ◽

Design Method ◽

Time Derivative ◽

Harmonic Distortion ◽

Robust Adaptive Control ◽

Total Harmonic Distortion ◽

Experimental Result ◽

Control Input ◽

Filter Design Method

In this research, a new nonlinear and adaptive state feedback controller with a fast-adaptive robust differentiator is presented for grid-tied inverters. All parameters and external disturbances are taken as uncertain in the design of the proposed controller without the disadvantages of singularity and over-parameterization. A robust differentiator based on the second order sliding mode is also developed with a fast-adaptive structure to be able to consider the time derivative of the virtual control input. Unlike the conventional backstepping, the proposed differentiator overcomes the problem of explosion of complexity. In the closed-loop control system, the three phase source currents and direct current (DC) bus voltage are assumed to be available for feedback. Using the Lyapunov stability theory, it is proven that the overall control system has the global asymptotic stability. In addition, a new simple L filter design method based on the total harmonic distortion approach is also proposed. Simulations and experimental results show that the proposed controller assurances drive the tracking errors to zero with better performance, and it is robust against all uncertainties. Moreover, the proposed L filter design method matches the total harmonic distortion (THD) aim in the design with the experimental result.

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