frankfurt (germany), 6-9 june 2011 improving the data quality of the lv-connectivity intro problem...
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Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Background Eandis:
Belgian DGO with approx. 4M customers
Smart metering program 2010: Proof of concept (4000 smart meters) 2013: Pilot (50.000 smart meters) 2016: Final roll-out
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Still many undiscovered uses!
Required: Data (as much as you can get) Research
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Smart metering data
LV-connectivity
Network optimization
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Definition Which meter/customer is connected to which LV-
feeder
Problem LV-grids: 1940-1970 IT systems (1980-…) Asset and GIS data was added long after installation Data quality is a problem
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Low-voltage connectivity
Frankfurt (Germany), 6-9 June 2011
LV-connectivity
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Why is this not correct?
Frankfurt (Germany), 6-9 June 2011
Why problematic Urban areas: multiple LV-feeds in parallel Exact begin and end of the feed not known Time consuming to measure
Why interesting Maintenance Net optimization Outages
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
LV-connectivity
Fraud detection Demand side management …
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Needed Energy/Current data from all connected meters A smart meter connected to the feed in the substation
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Calculating connectivity
Frankfurt (Germany), 6-9 June 2011
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Algorithm
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0.25
C1
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C3
C4
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F
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+
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Least squares fitting
Frankfurt (Germany), 6-9 June 2011
Red = feed consumption Green = feed – connected meters
= Measurement noise + cable losses
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Result
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0
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1
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Date
kWh
/ 4
Frankfurt (Germany), 6-9 June 2011
How to select the initial group?
The actual connected meters are a subset
Meters in a distance < 200m of this feed Using PLC connectivity Street names …
Initial group
Connected meters
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Example case
Energy balance not zero:
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0
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Datum
kWh
/ kw
artie
r
Cabine
Som aansluitingenVerschil cabine - som aansluitingen
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Example case
We select all meters within 200m of the feed 20 additional meters selected
We apply the least squares fitting:
2 newly selected meters!
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
resulting coefficients
Frankfurt (Germany), 6-9 June 2011
Example case
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Resulting energy balance is closer to zero
2 newly selected meters:
Frankfurt (Germany), 6-9 June 2011
Improving the data quality of the LV-connectivity
Intro Problem statement
What Why
Proposed solution Case Conclusion
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478
Frankfurt (Germany), 6-9 June 2011
Conclusion
We proposed an application of smart metering data
Calculates the LV-connectivity Feasibility proved in Matlab
More detailed info: paper #0478More information: [email protected]
Tom Pycke – Belgium – Distribution network business activities and impact of regulation – N° 0478