The Energy Management Adviser at Electricité De France

The Energy Management Adviser at Electricité De

France

Pierre Chaussecourte, Birte Glimm, Ian Horrocks, Boris Motik and Laurent Pierre

vendredi 25 octobre 13

The Energy Management Adviser at Electricité De France - ISWC 2013

• One of the world’s leading electric utilities

• 72.7 billion sales 2012

• 39.3 million customers wordwide

• 159 740 employees



• One of the world’s leading CS departments

• Leading role in OWL development

• OWL reasoners inc. HermiT, ELK & RDFox

• Collaborating with EDF since 2010



Summary

Presentation of the EMA

Modelling the EMA

Tools

Ongoing Developments



Presentation of the EMA



• Sending a “bare” invoice to our customers is not possible anymore

• We must include an analysis of electricity consumption and advice on energy management

• We must also be able to send an alert about electric consumption over a period of time



2008 2009 2010 2011 2012



2008 2009 2010 2011 2012



2008 2009 2010 2011 2012



2008 2009 2010 2011 2012





Vous pouvez constater que votre consommation d’électricité a été moins élevée en moyenne cette année que l’année dernière. Pourtant la température a été en moyenne moins élevée (- 1.6°C par rapport à l’année dernière), ce qui a pu augmenter votre consommation de chauffage.

La raison de cette diminution est donc certainement due à une utilisation moins fréquente et plus économe de vos équipements électriques que l’année dernière.

You can notice that your electricity consumption has been less high on average this year than last year. However, the temperature has been less high on average (- 1.6°C compared to last year), that could have increased your electricity consumption dedicated to heating.

This decrease is therefore certainly due to a less frequent and and more energy-efficient use of your electric appliances than last year.



You can notice that your electricity consumption has been higher on average this year than last year. Considering that the temperature has been less high on average (- 1.6°C compared to last year), this could have increased your electricity consumption dedicated to heating.

You can notice that your electricity consumption has been higher on average this year than last year. This increase is certainly due to a more frequent and less energy-efficient use of your electric appliances than last year.

Variations



Modelling the EMA



• We started by giving personalised advice to our customers

• We added electricity consumption analysis later

• Finally, we redesigned everything in collaboration with Oxford

• Now EMA serves 300,000 customers



Weather Report Service

Forcasted Electricity Consumption

Electricity Consumption Data

Energy Management Adviser

Electric HeatingColdWeatherOverConsumingOwner...

Yo can notice that ....



a_tip

a_house

a_clientlivesIn

hasTip



a_tip

a_house

a_clientlivesIn

hasTip

electricHeating

lower

hasTemperatureWinter

t

hasConsumptionCompareWithPrevious

Lower

True

higher

Higher



a_tip

a_house

a_clientlivesIn

hasTip

∃ livesIn.(∃ hasTemperatureWinter.Lower)

electricHeating

lower


t


Lower

True

higher

Higher



a_tip

a_house

a_clientlivesIn

hasTip


∃ livesIn.(∃ electricHeating.True)

electricHeating

lower


t


Lower

True

higher

Higher



a_tip

a_house

a_clientlivesIn

hasTip



∃ hasConsumptionCompareWithPrevious.Higher

electricHeating

lower


t


Lower

True

higher

Higher



a_tip

a_house

a_clientlivesIn

hasTip



∃ hasConsumptionCompareWithPrevious.Higher

electricHeating

lower


t


Lower

True

higher

Higher

S

{S ≡



a_tip

a_house

a_clientlivesIn

hasTipelectricHeating

lower


t


Lower

True

S

higher

Higher

isTipOf



a_tip

a_house

a_clientlivesIn


lower


t


Lower

True

S

higher

Higher

isTipOf

∃ isTipOf.S ⊑ C1

C1



a_tip

a_house

a_clientlivesIn


lower


t


Lower

True

S

higher

Higher

isTipOf


C1


C2



a_tip

a_house

a_clientlivesIn


lower


t


Lower

True

S

higher

Higher

isTipOf


C1


C2

SELECT ?t WHERE {

a_tip a ?t .?t rdf:subClassOf ActualTip.}



Reasoning & Formulae

• How to compute a formula in OWL ?

- computation in advance

- annotations on properties

• What if a formula depends on inferred facts ?



Special Situations

• Not all the tips are valid for every customers

• Define a new ontology vs Complicate the existent one

e.g. : Do not tell elderly customers to reduce their home temperature

• A SPARQL query used to subtract inaplicable tips



isTipOf

a_tipa_client

T1

notIsTipOf

a_non_tip



isTipOf

a_tipa_client

T1

notIsTipOf

a_non_tip

∃ hasAge.[integer >= 75]

S’



isTipOf

a_tipa_client

T1

notIsTipOf

a_non_tip


S’

nT1 ∃ notIsTipOf.S’ ⊑ nT1



isTipOf

a_tipa_client

T1

notIsTipOf

a_non_tip

SELECT ?t WHERE {

a_tip a ?t .?t rdf:subClassOf ActualTip.MINUS {a_non_tip a ?t .?t rdf:subClassOf ActualTip.}}


S’

nT1 ∃ notIsTipOf.S’ ⊑ nT1



Avoiding Nominals

• As soon as assertions describing a customer change, the ontology hierarchy has to be recomputed


S ⊑ ∃ hasTip.{c1}

• We use ‘simulated nominal class’ instead

∃ electricConsumption.{higher}

∃ electricConsumption.Higher

higher : Higher



Tools : Hermit



• HermiT is an open source OWL reasoner

• Implemented in Java

• We experimented with new solutions in order to speed up processing of customers



• Incremental changes in the ABox (no nominals in the TBox)

• Batch of customers (4 is the best)



Ongoing Developments



• Tips are represented as single class and are associated with a customer situation

• Combinatorial explosion of tips/customer situation classes

• Most of the tips share the same parts of text

Modular Tips



«Your electric consumption has been higher but this winter has been colder than usual and this could have increase your consumption»

«Your electric consumption has been higher»

higherElectricConsumption colderWinter

«this winter has been colder than usual»

explains

associatedTipFragment




«Your electric consumption has been higher but this winter has been colder than usual and this could have increase your consumption»

«Your electric consumption has been higher»

higherElectricConsumption colderWinter

«this winter has been colder than usual»

explains





3

75 m2

Questionnaire



3

m2

Questionnaire



3

m2100

Questionnaire



3

m2

increase of heated surface

100

Questionnaire



3

m2


100

Questionnaire



3

m2


a new freezer

100

Questionnaire



3

m2


a new freezer

100

Questionnaire



3

m2


a new freezer

100

Questionnaire



3

m2


a new freezer

100

Questionnaire



• We have started developments with RDFOx

• Customers information can be historicized

• Comparison between customers is available

• Using rules allows us to capture formulae in a declarative way

Triple Store



Thank you


The Energy Management Adviser at Electricité De France

Technology

energy management adviser

france iswc

energyefficient use

electric consumption

employees vendredi

electric appliances

electric utilities

t en moyenne moins leve