1 / 11

Smart- Grid Calculus

Smart- Grid Calculus. Dan-Cristian Tomozei (joint work with J.-Y. Le Boudec) DESL-LCA2 Workshop Orsières-Verbier 26-27 March 2013. What is Network Calculus ?.

helmut
Download Presentation

Smart- Grid Calculus

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Smart-GridCalculus Dan-Cristian Tomozei (joint workwith J.-Y. Le Boudec) DESL-LCA2 Workshop Orsières-Verbier 26-27 March 2013

  2. Whatis Network Calculus? "a set of mathematical results which give insights into man-made systems such as concurrent programs, digital circuits and communication networks." • Deterministicqueuing system theory Output flow Input flow

  3. Whatis Network Calculus? • Guaranteed flow characteristics • Arrivalcurves, service curves, shaping, etc. • Sizing (of buffers) Output flow Input flow

  4. Whatis Network Calculus? • Performance boundsbased on flow characteristics (e.g., arrivalcurves); hold for any flow satisfyingthem • Allowsconcatenation of several network elements • System algebra [simpler than it sounds!] • Yields global properties

  5. Smart-GridService Guarantees • For consumers • Demand-response: guaranteedenergy • For producers • Generation-control: guaranteedincome • For the grid • Guaranteed voltage profile?

  6. Demand-Response w/ Serv. Curves • Demand • Service curvecontract: • Guaranteedenergydelivery over interval • Modulateddemand s.t. • E.g., guarantee maximum power for at least 20h/24h and for the rest of the time • Decouples consumer problemand DSO problem! What about the demand?

  7. Flexible Demand: Peak Shaving • Electric vehicles • Arrive with a random (depleted) batterylevel • Need to becharged by a given deadline [Le Boudec, T. 2011]

  8. Inflexible Demand:BatteryCalculus • E.g., datacenterthatwants a lowerelectricity bill • Goal: find the smallestbattery size thatguarantees no interruptions [Le Boudec, T. 2012] Actual consumption (constrained!) Grid Loadsees no constraints “Energy buffer”

  9. BatteryCalculus + 1h/24h Service interruption =

  10. Conclusions • Can beimplemented in a SHC (Utkarsh didit!) • Decouples consumer and DSO problems • Bémol: counters per consumer (verify that contract is satisfied) • V1: Simplify to single counter per consumer • V2: Local check + broadcast. Probably works well with GECN!

  11. Problem Given (known) signals: • The load • Allowed consumption To be determined: • Battery initial charge • Max battery capacity • Schedule (consumption from grid) Constraints: • Demand Response: • Perfect battery constraints:

More Related