On the trade-off between timeliness and accuracy for low voltage distribution system grid monitoring utilizing smart meter data

Mohammed Seifu Kemal, Ruben Sanchez Martin-Loeches, Rasmus Løvenstein Olsen, Florin Iov, Hans-Peter Christian Schwefel

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Due to limited bandwidth and high delays in access
to Smart Meter measurements, it is not possible in most cases
to access measurements from the complete set of smart meters
in a low-voltage grid area for distribution grid monitoring.
Distribution system state estimation can be performed based
on measurements of voltage and active and reactive power
from a subset of selected smart meters. Increasing the number
of selected smart meters will, on the one hand, increase the
accuracy of distribution system state estimation, while on the
other hand, it will degrade timeliness of the monitoring data.
This paper proposes to utilize part of the idle time of the legacy
periodic smart meter data collection for access to measurements
from the subset of selected smart meters for distribution system
state estimation. It subsequently proposes a methodology on
how to quantitatively analyze this trade-off. The methodology
is applied to an example LV grid area with 20 customers using
weighted least square state estimation with support of pseudomeasurements
obtained during the regular smart meter collection
cycle.
OriginalsprogEngelsk
TidsskriftInternational Journal of Electrical Power and Energy Systems
ISSN0142-0615
StatusAccepteret/In press - 2020

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Smart meters
Monitoring
Electric potential
State estimation
Set theory
Bandwidth

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title = "On the trade-off between timeliness and accuracy for low voltage distribution system grid monitoring utilizing smart meter data",
abstract = "Due to limited bandwidth and high delays in accessto Smart Meter measurements, it is not possible in most casesto access measurements from the complete set of smart metersin a low-voltage grid area for distribution grid monitoring.Distribution system state estimation can be performed basedon measurements of voltage and active and reactive powerfrom a subset of selected smart meters. Increasing the numberof selected smart meters will, on the one hand, increase theaccuracy of distribution system state estimation, while on theother hand, it will degrade timeliness of the monitoring data.This paper proposes to utilize part of the idle time of the legacyperiodic smart meter data collection for access to measurementsfrom the subset of selected smart meters for distribution systemstate estimation. It subsequently proposes a methodology onhow to quantitatively analyze this trade-off. The methodologyis applied to an example LV grid area with 20 customers usingweighted least square state estimation with support of pseudomeasurementsobtained during the regular smart meter collectioncycle.",
keywords = "Electricity distribution network, Smart meters, Data Analysis",
author = "Kemal, {Mohammed Seifu} and Martin-Loeches, {Ruben Sanchez} and Olsen, {Rasmus L{\o}venstein} and Florin Iov and Schwefel, {Hans-Peter Christian}",
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TY - JOUR

T1 - On the trade-off between timeliness and accuracy for low voltage distribution system grid monitoring utilizing smart meter data

AU - Kemal, Mohammed Seifu

AU - Martin-Loeches, Ruben Sanchez

AU - Olsen, Rasmus Løvenstein

AU - Iov, Florin

AU - Schwefel, Hans-Peter Christian

PY - 2020

Y1 - 2020

N2 - Due to limited bandwidth and high delays in accessto Smart Meter measurements, it is not possible in most casesto access measurements from the complete set of smart metersin a low-voltage grid area for distribution grid monitoring.Distribution system state estimation can be performed basedon measurements of voltage and active and reactive powerfrom a subset of selected smart meters. Increasing the numberof selected smart meters will, on the one hand, increase theaccuracy of distribution system state estimation, while on theother hand, it will degrade timeliness of the monitoring data.This paper proposes to utilize part of the idle time of the legacyperiodic smart meter data collection for access to measurementsfrom the subset of selected smart meters for distribution systemstate estimation. It subsequently proposes a methodology onhow to quantitatively analyze this trade-off. The methodologyis applied to an example LV grid area with 20 customers usingweighted least square state estimation with support of pseudomeasurementsobtained during the regular smart meter collectioncycle.

AB - Due to limited bandwidth and high delays in accessto Smart Meter measurements, it is not possible in most casesto access measurements from the complete set of smart metersin a low-voltage grid area for distribution grid monitoring.Distribution system state estimation can be performed basedon measurements of voltage and active and reactive powerfrom a subset of selected smart meters. Increasing the numberof selected smart meters will, on the one hand, increase theaccuracy of distribution system state estimation, while on theother hand, it will degrade timeliness of the monitoring data.This paper proposes to utilize part of the idle time of the legacyperiodic smart meter data collection for access to measurementsfrom the subset of selected smart meters for distribution systemstate estimation. It subsequently proposes a methodology onhow to quantitatively analyze this trade-off. The methodologyis applied to an example LV grid area with 20 customers usingweighted least square state estimation with support of pseudomeasurementsobtained during the regular smart meter collectioncycle.

KW - Electricity distribution network

KW - Smart meters

KW - Data Analysis

M3 - Journal article

JO - International Journal of Electrical Power & Energy Systems

JF - International Journal of Electrical Power & Energy Systems

SN - 0142-0615

ER -