Harmonic emission assessment on a distribution network: the opportunity for the prevailing angle in harmonic phasors

Peterson, Brandon; Rens, Johan; Desmet, Jan

doi:10.1049/oap-cired.2017.0891

Cited by 8 publications

(5 citation statements)

References 13 publications

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“…In order to find the total harmonic currents loading the substation, the individual load harmonics have to be summed geometrically. The total harmonic current from the multiple devices can be significantly lower than the arithmetic sum of individual current magnitudes due to diversity in the harmonic phase angles [13].…”

Section: Introductionmentioning

confidence: 99%

Current Harmonic Aggregation Cases for Contemporary Loads

et al. 2022

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Power electronic circuits in modern power supplies have improved the conversion efficiency on the one hand but have also increased harmonic emissions. Harmonic currents from the operation of these units affect the voltage waveforms of the network and could compromise the reliability of the network. Load and source non-linearity can, therefore, limit the renewable source’s hosting capacity in the grid, as a large number of inverter units may increase the harmonic distortions. As a result, voltage and current distortions could reach unbearable levels in devices connected to the network. Harmonic estimation modelling often relies on measurement data, and differences may appear in mathematical simulations as the harmonic aggregation or cancellation may generate different results due to the inaccuracies and limitations of the measurement device. In this paper, the effect of harmonic currents cancellation on the aggregation of different load currents is evaluated to show its impact in the network by presenting a comparison between the measurement and mathematical aggregation of harmonics. Furthermore, the harmonic cancellation phenomenon is also qualified for multiple loads connected to the power supply.

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Section: Introductionmentioning

confidence: 99%

Current Harmonic Aggregation Cases for Contemporary Loads

et al. 2022

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“…1, pp. 110-117 © The Institution of Engineering and Technology 2019 production, become new sources of harmonics [2]. However, existing standards [18][19][20] as well as network rules of distribution systems regulate their work in terms of power quality at the connection site.…”

Section: Introductionmentioning

confidence: 99%

“…PV systems are connected to the distribution grid through the power converters. Along with variability of power generation of PV systems power converters become new sources of harmonics [2]. The integration of RES power plants in terms of maintaining the power quality in the existing distribution network becomes an additional challenge [3].…”

Section: Introductionmentioning

confidence: 99%

“…individual harmonic component [17]. PV systems as a one of the fastest growing RES systems are connected via power electronics devices to power system and with an unpredictability in production, become new sources of harmonics [2]. However, existing standards [18–20] as well as network rules of distribution systems regulate their work in terms of power quality at the connection site.…”

Section: Introductionmentioning

confidence: 99%

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Impact of photovoltaic and biogas power plant on harmonics in distribution network

Klaić¹,

Knežević²,

Primorac³

et al. 2019

IET Renewable Power Generation

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Here, the impacts of biogas power plants and photovoltaic (PV) power plants on the power quality in the distribution network are presented and analysed. The biogas power plant's influence on the current harmonics is explored, as a synchronous generator powers the biogas power plant, and the PV plants are connected to the distribution network via the inverter. All the analyses are based on actual measurements that are performed in the last 10 years. Results of the analysis of these numerous measurements were a challenge for investigation how large share of PV systems in distribution network with non-linear loads influence on THD from one side and how biogas power plant with a synchronous generator can improve THD from the other side. In order to investigate interaction of the biomass power plant and PV power plants on the power quality in distribution network, computer model was developed in DIgSILENT Power Factory where PV power plant and household were modelled as a source of current harmonic injections and biomass power plant was modelled as synchronous machine, as a source of voltage harmonics. Analysis of harmonic behaviour in different scenarios is examined through the performed simulations.

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“…Two peer-reviewed conference papers as well as a journal article were published on the research contained in this chapter[113]-[115].…”

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confidence: 99%

A discriminative approach to harmonic emission assessment

Peterson

Rens

Botha

et al. 2015

2015 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)

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With the onset of renewable power sources onto the network, such as Photovoltaic power plants contributing to Total Harmonic Distortion (THD) in voltage, a methodology to quantify their contribution to the THD in voltage at the point of common coupling is needed. This paper give an overview of existing theory on the quantification of harmonic emission and in particular the method proposed by the CIGRE/CIREDC4.109 working group. It is concluded that the application of this method by single-point measurements can be improved upon by using synchronized multiple-point measurements. Discrimination to identity the harmonic currents regarded as emission is attempted in the assessment of harmonic emission at a PV plant feeding into a 22 kV distribution network

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Harmonic emission assessment on a distribution network: the opportunity for the prevailing angle in harmonic phasors

Cited by 8 publications

References 13 publications

Current Harmonic Aggregation Cases for Contemporary Loads

Current Harmonic Aggregation Cases for Contemporary Loads

Impact of photovoltaic and biogas power plant on harmonics in distribution network

A discriminative approach to harmonic emission assessment

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