CassandraTheoretical ModellingGeorgios AndreouAristotleUniversity ofThessaloniki
Power Distribution Network2Cassandra Project 1st Webinar June 11, 2013Small IndustryMV/LV PowerTransformerCommercialMV/LV ...
Power Distribution Network• Consumer Side (Demand Side)• Demand Side Management– Consumption optimization– Energy efficien...
Cassandra as a solution• A helping hand in order to:– Simulate the consumption of consumer populations,– Understand behavi...
Basic modeling concepts• Reality:– Installation (Aggregation of all the appliances installed within thepremises of a consu...
Basic modeling concepts• Modeling:– An Installation consists of its Appliances.– Measurements of the installation are used...
Functionality according to quality of input• Basic simulation rule: The more information you offer asinput, the more accur...
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First CASSANDRA Webinar - Concept and theoretical aspects of CASSANDRA by Giorgos Andreou, Lecturer at Power Systems Laboratory Department of Electrical and Computer Engineering Aristotle University of Thessaloniki

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First CASSANDRA Webinar - Concept and theoretical aspects of CASSANDRA by Giorgos Andreou, Lecturer at Power Systems Laboratory Department of Electrical and Computer Engineering Aristotle University of Thessaloniki

  1. 1. CassandraTheoretical ModellingGeorgios AndreouAristotleUniversity ofThessaloniki
  2. 2. Power Distribution Network2Cassandra Project 1st Webinar June 11, 2013Small IndustryMV/LV PowerTransformerCommercialMV/LV PowerTransformerMV/LV PowerTransformerResidentialResidentialCommercialCommercialOverhead or UndergroundPower LinesHV/MV PowerSubstationResidential
  3. 3. Power Distribution Network• Consumer Side (Demand Side)• Demand Side Management– Consumption optimization– Energy efficiency– Profit• Problems– Which is the profile of eachconsumer?– How to cluster/categorizeconsumers?– Which DSM program/incentive to offerto each consumer?3Cassandra Project 1st Webinar June 11, 2013
  4. 4. Cassandra as a solution• A helping hand in order to:– Simulate the consumption of consumer populations,– Understand behaviors that drive consumption,– Cluster consumers into groups for more efficient incentivisation,– Simulate consumer response to specific Demand Response programs• Two modeling approaches:– Input based on demographic data → aggregate results for a consumerpopulation– Input based on consumer level measurements → bottom-up approachwith results regarding individual consumers and/or consumerpopulations4Cassandra Project 1st Webinar June 11, 2013
  5. 5. Basic modeling concepts• Reality:– Installation (Aggregation of all the appliances installed within thepremises of a consumer).– Person(s) performing activities by the use of appliances according totheir utility.– Person(s) have habits (recurrent behaviour).– Person(s) receive incentives to modify consumption, and choose eitherto respond or not according to their utility.5Cassandra Project 1st Webinar June 11, 2013
  6. 6. Basic modeling concepts• Modeling:– An Installation consists of its Appliances.– Measurements of the installation are used in order to determine itsAppliances, as well as the consumer Activities (Disaggregationprocedure).– Appliances are described by Consumption Models (mathematicalrepresentations of their active and reactive power consumption).– Consumer utility is modelled through Utility Models.– Incentives are modelled through Incentive Models.– Response is modelled through Response Models.– Auxiliary Models:• Pricing Schemes Models• CO2 Emission Calculation6Cassandra Project 1st Webinar June 11, 2013
  7. 7. Functionality according to quality of input• Basic simulation rule: The more information you offer asinput, the more accurate results you will obtain.• Demographic data input: The simulation will be based onstatistics, thus it will not produce accurate individual consumerresults.• Measurement data input:– The Cassandra modeling is based on per minute measurements ofactive and reactive power for an installation (loss of information)– Accuracy of results depends on information compensation.7Cassandra Project 1st Webinar June 11, 2013

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