Voltage harmonic distortion measurement issue in smart-grid distribution system

Łuszcz, Jarosław; Smoleński, Robert

doi:10.1109/apemc.2012.6238024

Cited by 17 publications

(7 citation statements)

References 12 publications

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“…Power and power quality measuring system can be also influenced by elevated harmonic levels in frequency range above 2 kHz because of limited bandwidth of used voltage and current transducers [8]. This problem become more critical in smart grids where smart metering systems tends to be more complex and advanced and also use power line communication methods [4], [9], [8], [10], [11]. In the commercial environment there are also known occurrence of interfering of audio systems by grid connected PWM converters, which are nowadays widely applied in contemporary interruptible power supply system.…”

Section: Introductionmentioning

confidence: 99%

“…In frequency range between 3 kHz and 150 kHz number of communication system over power lines are used, and their immunity levels have to be coordinated to expected interference levels originated from grid connected PWM boost converters working in power system [1], [2], [3], [4], [5], [6], [7]. Power and power quality measuring system can be also influenced by elevated harmonic levels in frequency range above 2 kHz because of limited bandwidth of used voltage and current transducers [8]. This problem become more critical in smart grids where smart metering systems tends to be more complex and advanced and also use power line communication methods [4], [9], [8], [10], [11].…”

Section: Introductionmentioning

confidence: 99%

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High frequency harmonics emission of modern power electronic AC-DC converters

Łuszcz

2013

2013 International Conference-Workshop Compatibility and Power Electronics

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Modern AC/DC converters with bidirectional power flow employing PWM boost topology generate harmonic distortions of input current in relatively high frequency range tightly related to modulation carrier frequency. These frequencies and its multiples in typical applications are usually located in frequency range from single up to several of kHz. Increased harmonic emission in this frequency range can easily and harmfully influence sensitive control and measurement systems what occurs more often nowadays in applications where high power AC/DC PWM boost converted are used. This paper presents a comparison of current harmonic emission of PWM boost rectifiers with relation to classic diode rectifiers. New class of electromagnetic compatibility problems arising in power system are underlined as a result of increased harmonic distortions emission in frequency range up to 9 kHz.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High frequency harmonics emission of modern power electronic AC-DC converters

Łuszcz

2013

2013 International Conference-Workshop Compatibility and Power Electronics

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“…These frequencies are located just above upper range (2 kHz) of low order harmonics limited by power quality related standards and also cover lower part of CISPR A range ( Fig. 1 (13)(14)(15)(16)(17), was more than ten times higher with relation to diode rectifier (Fig. 12).…”

Section: Pwm Carrier Frequency Rangementioning

confidence: 98%

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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“…To prevent this, the reflection from an additional FBG sensor positioned in close proximity to the voltage sensing transducer, i.e. 2 in Figure 3, may be used as a reference optical power, assuming that the local temperature change does not affect the power level reflected from the reference FBG. The voltage sensing and reference FBGs should be spectrally aligned with the centers of corresponding unique WDM channels.…”

Section: Interrogation Systemmentioning

confidence: 99%

Temperature-independent high-speed distributed voltage measurement using intensiometric FBG interrogation

Fusiek

Orr

Niewczas

2015

2015 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) Proceedings

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Abstract-In this paper, we demonstrate through simulation a low-cost, high-speed optical voltage sensing system with a multiplexing capability. The scheme utilizes transducers based on a hybrid piezoelectric/optical construction, whereby the optical power reflected from dual-peak fiber Bragg gratings is modulated in response to an excitation voltage and monitored by photodetection while remaining robust to fluctuations in optical power and temperature. A dedicated solid-state interrogation system incorporating passive wavelength division multiplexing allows for high-speed measurement over the ac/dc voltage sensor array without the use of expensive components, such as tunable filters or lasers.

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Voltage harmonic distortion measurement issue in smart-grid distribution system

Cited by 17 publications

References 12 publications

High frequency harmonics emission of modern power electronic AC-DC converters

High frequency harmonics emission of modern power electronic AC-DC converters

Low Frequency Conducted Emissions of Grid Connected Static Converters

Temperature-independent high-speed distributed voltage measurement using intensiometric FBG interrogation

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