Effects of mixed electronic loads on the electrical energy systems considering different loading conditions with focus on power quality and billing issues

Silva, Roberto Perillo Barbosa de; Quadros, Rodolfo; Shaker, Hamid Reza; Silva, Luiz Carlos Pereira da

doi:10.1016/j.apenergy.2020.115558

Cited by 15 publications

(6 citation statements)

References 37 publications

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“…The power factor and harmonics are the crucial parameters in the power system [20]. The power factor improvement techniques and harmonic mitigation have a significant scope on economic benefits, respectively.…”

Section: Techno-economic Analysis On Textile Industry Energy Conserva...mentioning

confidence: 99%

Energy Conservation Approach for Continuous Power Quality Improvement: A Case Study

Nadimuthu

Kirubakaran

Basha³

et al. 2021

IEEE Access

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This work focuses on a mitigating harmonic filter. It investigates the effect of mitigating harmonic filters in the textile industry with innovative energy conservation strategies for energy bill reduction, which covers a pathway to climate change mitigation. Here, the effect of the harmonic filter is found out by the systematic energy audit methodology (Preliminary, Detailed and Post-Audit phase). From the energy auditing, it has been found that the textile industry needed a passive harmonic filter for harmonic mitigation. Since, third, fifth, and seventh order of harmonic predominantly exists in the system. The high stability at higher current, known tuning frequency, low cost, and low power consumption make the passive filter the best fit for the system. The voltage and current Total Harmonic Distortion Factor (THDF) have been measured using the class 'A' power quality and energy analyzer. The harmonic filter's effect in harmonics mitigation is prominent; 66.45% of the reduction of current harmonics is achieved after installing the passive filter at the Point of Common Coupling (PCC) of the system. Also, the reduction of harmonics ensures energy conservation by reducing additional losses (joule, copper, and eddy current losses). The techno-economic analysis with payback period calculation is carried out and reported. Also, the effect of harmonics like mechanical anomalies (temperature rise) is carefully studied using an infrared thermographic technique in the textile industry's motor loads. The energy conservation and their carbon emission reduction are calculated and reported.INDEX TERMS Carbon emission reduction, energy audit, energy conservation, harmonic mitigation, passive mitigation techniques, and power quality.

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Section: Techno-economic Analysis On Textile Industry Energy Conserva...mentioning

confidence: 99%

Energy Conservation Approach for Continuous Power Quality Improvement: A Case Study

Nadimuthu

Kirubakaran

Basha³

et al. 2021

IEEE Access

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“…The existing smart energy meters in our distribution systems are not designed to measure the TPF and reactive power; hence, they are not billed to the consumers. So, the need to bill consumers for poor PQ caused by their behavior is not recognized, and hence, the requirement of compensation of reactive power has gone unnoticed [11][12][13]. Therefore, the authors feel strongly that the DSM for the PQ is the need of the hour, and serious attention is required in order to measure and address issues of poor PQ in LVDSs and to meet SDG 7-affordable, clean, and quality energy for all.…”

Section: Perspectives On Demand-side Managementmentioning

confidence: 99%

“…From Equations ( 10) and (11), 𝛽 can be represented as: The frequency spectrum expression used in the EDSLIFFT algorithm is given as follows:…”

Section: Processing With the 4mscw-based Edslifft Algorithmmentioning

confidence: 99%

Demand-Side Management for Improvement of the Power Quality in Smart Homes Using Non-Intrusive Identification of Appliance Usage Patterns with the True Power Factor

2021

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The proliferation of low-power consumer electronic appliances (LPCEAs) is on the rise in smart homes in order to save energy. On the flip side, the current harmonics induced due to these LPCEAs pollute low-voltage distribution systems’ (LVDSs’) supplies, leading to a poor power factor (PF). Further, the energy meters in an LVDS do not measure both the total harmonic distortion (THD) of the current and the PF, resulting in inaccurate billing for energy consumption. In addition, this impacts the useful lifetime of LPCEAs. A PF that takes the harmonic distortion into account is called the true power factor (TPF). It is imperative to measure it accurately. This article measures the TPF using a four-term minimal sidelobe cosine-windowed enhanced dual-spectrum line interpolated Fast Fourier Transform (FFT). The proposed method was used to measure the TPF with a National Instruments cRIO-9082 real-time (RT) system, and four different LPCEAs in a smart home were considered. The RT results exhibited that the TPF uniquely identified each usage pattern of the LPCEAs and could use them to improve the TPF by suggesting an alternative usage pattern to the consumer. A positive response behavior on the part of the consumer that is in their interest can improve the power quality in a demand-side management application.

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“…Their wideband operation is required due to the low power quality and significant content of higher harmonics in current and voltages of the power grid [1], [4]- [7], [10]- [17]. Therefore, the power billing must be considered under the non-sinusoidal conditions [18]- [20]. Nowadays, there are no defined normative reference and test procedures for evaluation of the accuracy of inductive CTs for transformation of the distorted current.…”

Section: Introductionmentioning

confidence: 99%

The Influence of the 3rd Harmonic of the Distorted Primary Current on the Self-Generation of the Inductive Current Transformers

Kaczmarek

Stano

2022

IEEE Access

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This paper investigates for transformation of the distorted current the low order higher harmonic self-generation phenomenon of tested inductive current transformers. The influence of the main component and the 3rd harmonic of the distorted primary current on the RMS values of the 5th, 7th and 9th order self-generated higher harmonics is analyzed. This research indicate that the change of the RMS value of the 3rd harmonic of the distorted primary current causes variation of the lower order higher harmonics generated in to the secondary current. Therefore, this is a challenging phenomenon which have to be considered while compensating the values of current error and phase displacement of the inductive CTs during transformation of the distorted currents.INDEX TERMS self-generation, distorted primary current, inductive current transformer, low order higher harmonics, current error, phase displacement.

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Effects of mixed electronic loads on the electrical energy systems considering different loading conditions with focus on power quality and billing issues

Cited by 15 publications

References 37 publications

Energy Conservation Approach for Continuous Power Quality Improvement: A Case Study

Energy Conservation Approach for Continuous Power Quality Improvement: A Case Study

Demand-Side Management for Improvement of the Power Quality in Smart Homes Using Non-Intrusive Identification of Appliance Usage Patterns with the True Power Factor

The Influence of the 3rd Harmonic of the Distorted Primary Current on the Self-Generation of the Inductive Current Transformers

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