Street lamps aggregation analysis through IEC 61000-3-6 approach

Gil-de-Castro, Aurora; Bollen, M.H.J.; Moreno-Munoz, A.

doi:10.1049/cp.2013.0656

Cited by 5 publications

(6 citation statements)

References 4 publications

(6 reference statements)

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“…9 to 200 Hz-wide frequency sub-range was calculated using formula 7. Conclusions (4). This standardized analysis shows a significant increase of total spectral power emission of PWM rectifier in relation to diode recGrid-connected Static AC-DC Converters based on IGBT switching tifier (Fig.…”

Section: Frequency Range 2-9 Khzmentioning

confidence: 71%

Low Frequency Conducted Emissions of Grid Connected Static Converters

Łuszcz

Smoleński

2015

IEEE Electromagn. Compat. Mag.

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Pulse-width modulated rectifiers are nowadays commonly used for AC to DC power conversion. PWM rectification technology is very effective and allows for bidirectional power flow with the possibility of power factor improvement and low-order harmonic emission limitation. Unfortunately, employed PWM boost topology results with generation of input current harmonic distortions in a frequency range tightly correlated to modulation frequency. PWM carrier frequency and its harmonic components in typical applicatechnology, uninterruptible power supply systems, reactive power static compensator, harmonic active filters [1-61.This technological trend significantly increases harmonic emission spectrum within higher frequency ranges correlated with modula tion carrier frequency. Therefore, typically used harmonic limitation up to 40th order in many contemporary applications needs to be extended up to 9 kHz, which is the lower limit frequency of typical conducted electromagnetic interference (EMI) analysis interest.tions are usually located in frequency range from single kHz up toIn recent years, significant increase of harmonic emission into the hundreds of kHz. Increase of harmonic emission in this particular power grid is observed, which results with the increase of incomfrequency range can be disturbing for other sensitive systems, patibility risk in frequency range from above 40th order harmonic therefore can cause lack of electromagnetic compatibility. Interup to 9 kHz and within CISPR A band (9-150 kHz). In this frequency ferences in low frequency range are increasingly frequent EMC range also a number of power line communication systems are issue because of extensive use of low power PWM rectifiers and used, therefore their immunity levels have to be coordinated with significant increase of rated power of individual converters, which the expected conducted EMllevels originating from grid connectalready reach several MW. Presented comparison of current hared PWM converters [7-131.monic emission spectra of PWM rectifiers with relation to classic diode rectifiers is focused on frequency range of 2 to 9 kHz, for which emission limitation rules are currently under development.New class of EMC problems arising in low frequency range in power system are underlined as a result of increased harmonic emission in frequency range of 2 to 9 kHz.

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Section: Frequency Range 2-9 Khzmentioning

confidence: 71%

Low Frequency Conducted Emissions of Grid Connected Static Converters

Łuszcz

Smoleński

2015

IEEE Electromagn. Compat. Mag.

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“…This method, namely linear summation, presumes that all s are in phase as stated in equation (1). If the components (usually load currents) are in phase, a scalar summation would be accurate; however this will lead to a conservative yet unrealistic approximation of THD [3]. It has been represented that in many cases, arithmetic summation is too pessimistic and actual harmonics cancels each other due to phase differences, resulting in a very smaller aggregated harmonic level.…”

Section: A Review Of the Existing Methodsmentioning

confidence: 99%

“…Permissible levels of harmonic pollution in IEC and IEEE international standards are provided as static indices measured at PCCs. [3], [4] However, since it is not always practical to measure power quality indices in PCCs, especially when the network behavior is time varying (e.g. inserting new loads, time varying components, etc.…”

Section: Introductionmentioning

confidence: 99%

“…), some approximate methods are recommended in IEC 61000 series for evaluating the total harmonic distortion based on single component distortions. [3]. The importance of having a proper estimation of harmonic current based on individual harmonic currents is that one can determine whether it is possible to add new components without violating the THD requirements or not.…”

Section: Introductionmentioning

confidence: 99%

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Harmonic aggregation techniques for power quality assessment a standard framework

Pasand¹,

Rahmatian

2014

IJET

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A review on the existing methods for aggregation of harmonic currents including recommended method used in IEC 61000-3-6 standard is performed and different approaches are compared. Main advantages of each method are outlined and simulation studies are performed to assess each method. A simple technique is proposed to base future research and standardization on. The proposed technique is simple, reliable and realistic though requires experimental data to derive parameters. Keywords: Electromagnetic Compatibility; Harmonic Distortion; Harmonic Aggregation; Power Quality; Current Harmonics.

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“…A current harmonic magnitude (order h) concerning aggregated appliances may be determined by a generic law [28] as follows:…”

Section: Load Signatures Of Agreggated Measurementsmentioning

confidence: 99%

Load Signature Formulation for Non-Intrusive Load Monitoring Based on Current Measurements

et al. 2017

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Abstract:In this paper we present a new methodology for the formulation of efficient load signatures towards the implementation of a near-real time Non-Intrusive Load Monitoring (NILM) approach. The purpose of this work relies on defining representative current values regarding the 1st, 3rd and 5th harmonic orders to be utilized in the load signatures formulation. A measurement setup has been developed and steady-state measurements have been performed in a Low Voltage residence. A data processing methodology is proposed aiming to depict representative current values for each harmonic order in order to keep the load signature short and simple. In addition, a simple disaggregation scheme is proposed under linear equations for the disaggregation mode in order to examine the near-real time application of the methodology. The analysis indicates that the developed load signatures could be efficient for a per second application rate of the NILM algorithm. The results show that the higher harmonic currents facilitate the identification performance. Finally, the analysis concludes that for combinations that include appliances with intense harmonic content, the phase angle of the higher for harmonic currents should also be considered to the load signatures formulation.

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Street lamps aggregation analysis through IEC 61000-3-6 approach

Abstract: ABSTRACT

Cited by 5 publications

References 4 publications

Low Frequency Conducted Emissions of Grid Connected Static Converters

Low Frequency Conducted Emissions of Grid Connected Static Converters

Harmonic aggregation techniques for power quality assessment a standard framework

Load Signature Formulation for Non-Intrusive Load Monitoring Based on Current Measurements

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