Multiple-Site Amplitude and Phase Measurements of Harmonics for Analysis of Harmonic Propagation on Bornholm Island

Wright, P.S.; Christensen, Andreas Elmholdt; Davis, Peter N.; Lippert, Torsten

doi:10.1109/tim.2017.2660019

Cited by 19 publications

(14 citation statements)

References 5 publications

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“…Bornholm Island is a power network situated in the Baltic Sea with a single interconnection to the Nordic Power Grid, largely capable of independent operation due to its high penetration of RES and an independent diesel power station for periods of low wind generation. Six metrology grade digitizers were installed on the Island in 2016 to conduct PQ research; a full description of the power network and the digitizers is given in [11]. The instrument numbering shown on the plots used below can be linked to instrument location in [11].…”

Section: Rocof Algorithm Testing On Bornholm Islandmentioning

confidence: 99%

“…Six metrology grade digitizers were installed on the Island in 2016 to conduct PQ research; a full description of the power network and the digitizers is given in [11]. The instrument numbering shown on the plots used below can be linked to instrument location in [11]. These digitizers have the capability of remote reprogramming which allows various ROCOF algorithms to be uploaded and reconfigured.…”

Section: Rocof Algorithm Testing On Bornholm Islandmentioning

confidence: 99%

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Field Measurement of Frequency and ROCOF in the Presence of Phase Steps

Wright

Davis

Johnstone

et al. 2019

IEEE Trans. Instrum. Meas.

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A description of the importance of rate of change of frequency (ROCOF) measurements to the operation of electricity networks is given. The susceptibility of ROCOF measurements to common power system disturbances such as phase steps is described. A measurement campaign to observe ROCOF at multiple locations in an island grid dominated by renewable generation is described and some results are given. These captured ROCOF events are dominated by those associated with phase steps, which occur without significant change to underlying power system frequency. It is concluded that they constitute a "false" ROCOF event. A new algorithm is presented that attempts to remove the influence of the phase step and reduce the associated ROCOF error such that the reliability of ROCOF measurements can be improved in the presence of phase steps. The algorithm is then applied to some recorded waveform sequences from the island that contains phase steps, and the results are presented. In one example, it is shown that a false ROCOF spike in excess of 100 Hz/s was reduced to less than 5 Hz/s. Index Terms-Frequency measurement, phasor measurement units (PMUs), power system measurements, rate of change of frequency (ROCOF).

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Section: Rocof Algorithm Testing On Bornholm Islandmentioning

confidence: 99%

Section: Rocof Algorithm Testing On Bornholm Islandmentioning

confidence: 99%

Field Measurement of Frequency and ROCOF in the Presence of Phase Steps

Wright

Davis

Johnstone

et al. 2019

IEEE Trans. Instrum. Meas.

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show abstract

“…Bornholm Island is a power network situated in the Baltic Sea with a single interconnection to the Nordic Power Grid, largely capable of independent operation due to its high penetration of RES and an independent diesel power station for periods of low wind generation. Six metrology grade digitisers were installed on the Island in 2016 to conduct PQ research; a full description of the power network and the digitisers is given in [2]. These digitisers have the capability of remote reprogramming which here allows various ROCOF algorithms to be uploaded and reconfigured.…”

Section: Rocof Algorithm Testing On Bornholm Islandmentioning

confidence: 99%

Field Testing of ROCOF Algorithms in Multiple Locations on Bornholm Island

Wright

Davis

Johnstone³

et al. 2018

2018 Conference on Precision Electromagnetic Measurements (CPEM 2018)

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“…Different methods are presented to determine the harmonic contribution (HC) of consumers which can be divided into two general groups of single-point methods (related to the connection point of the participant to the network) and multi-point methods (analysis of the participant's effect on different points of the network) [5][6][7][8]. Most multi-point methods require the existence of simultaneous data from various points of the network; however, the single-point methods do not have such a requirement.…”

Section: Introductionmentioning

confidence: 99%