Post on 26-Jan-2017
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
SMALL POWER LOAD DISAGGREGATION IN OFFICE BUILDINGSBASED ON ELECTRICAL
SIGNATURE CLASSIFICATION
IEEE Energycom 2016 conference
Ana Rodriguez-Arguellesa.rodriguezarguelles@pgr.reading.ac.uk
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
The goalUnderstand end
use energy consumption at
system level
The perfect Energy AuditAccurate, cheap and low intrusive infrastructure
The starting point
Building survey and energy
data collection
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
Non Intrusive Appliance Monitoring (NIALM)
Monitoring the electrical signal in a single point of the network, detect changes in current and voltage for recognizing what appliances are being used in the house and their individual energy consumption.
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
IDEA Disaggregate only small powers
• Significate source of energy end-use• Major source uncertainty ion energy
assessment
But is not so easy…
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
Let me introduce you to NIALMNIALM were first developed by George Hart in the 80s
Electrical Signatures
Transients Steady-state
Machine learning Methods
Supervised Unsupervised
Classification Clustering Regression
Theoretical framework:
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
My NIALM Model
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
IMPORT DATA: CURRENT AND VOLTAGE AT 1 MILLISECOND
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 104
-1
-0.5
0
0.5
1
1.5
Time (ms)
Curre
nt (A
)
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
DATA PROCESSING
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 104
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
Time (ms)
Curre
nt R
MS
(A)
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
EVENT DETECTION
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
x 104
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
Time (ms)
Irms
(A)
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
ELECTRICAL SIGNATUREAPPLIANCE CHARACTERISTIC ELECTRICAL FEATURES
Transient Steady-StateRMS
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
CLASSIFICATIONDECISION TREE USING KNIME
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Experiments
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
Results
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
Future workImplement NIALM methods in Office buildings
LIMITLESS POTENTIAL | LIMITLESS OPPORTUNITIES | LIMITLESS IMPACT
NIALM might be the key…
Thanks for your attention
Any question…?