Central Station Design Options

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Central Station Design Options

Authors
Keywords
  • Design
  • E
  • G
  • On The Other Hand
  • The Purpose Of Edison Work Package 4
  • 1 Is The Evaluation Of Possible Central (Charging) Stations Design Options For Making Possible The P
  • A Number Of Scenarios For Evs Are Assessed
  • With Special Emphasis On The Options Of Fast Charging And Battery Swapping
  • The Work Identifies The Architecture
  • Sizing And Siting Of Prospective Central Stations In Denmark
  • Which Can Be Located At Shopping Centers
  • Large Car Parking Lots Or Gas Stations
  • Central Stations Are Planned To Be Integrated In The Danish Distribution Grid
  • The Danish Island Of Bornholm
  • Where A High Penetration Of Wind Power Is Present
  • Is Considered As Special Case
  • The Distribution Grid In Denmark Is Built Using Larger Secondary Distribution Transformers (E
  • 630 Kva) Which In <Br/>General Allows Higher Flexibility For The Installation Of Central Stations
  • Compared To Bornholm’S Distribution Grid
  • With The 3-Phase Ac Quick Charging Options Of 11
  • 22 Kw And 43 Kw
  • (Iec 62196
  • En60038
  • En 61851) Both The Danish And Bornholm Environments Offer A Good Chance For Ev Integration [1]
  • Dealing With Fast Charging
  • The Study Determined That 300Kw Fast Charging
  • Which Corresponds To 10 Minutes Charging For A 50 Kwh Battery-Ev Is Not Feasible In Bornholm At The
  • 4 Kv Level
  • Due To Predominantly Small Size Secondary Distribution Transformers
  • In The Range Of 100 - 200 Kva
  • This Is Possible At The 10Kv Level (Mv Level)
  • If The Fast Charging Station Is Equipped With Its Own Dedicated Transformer
  • With Dc Charging
  • Rated At 50 Kw
  • Fast Charging Would Be Easier In Both Denmark And Bornholm Scenarios
  • For Each Scenario And Charging Power Level
  • The Possible Number Of Evs Is Estimated And Finally Architectural Design Options Are Proposed
  • Technical Assessment Is Performed For Evaluating The Benefits Of Different Charging Concepts As Fast
  • Single Phase (230V) Versus Three Phase (400V) Loading
  • A Study On Possible Siting For Central Stations Is Performed For The Danish Main Land
  • Where The Average Distance Covered By Evs Is Used As Input Data
  • A Finding Of The Study Is That A Reasonable Number Of Fast Charging And Swapping Stations Are About
  • Assuming That All Evs Have A Range Of 100-120 Km
  • Furthermore The Bornholm Case Is Not Very Relevant For Fast Charging Or Battery Swapping Stations
  • Due To The Relatively Small Dimensions Of The Island
  • Several Architectures Of Central Station Are Assessed Based On Different Hardware Components Onfigur
  • It Is Possible To Have A Central Station Connected To An Existing Distribution Transformer
  • In This Case The Transformer Load Management Becomes Crucial
  • Furthermore We Could Have The Options Of Ac Versus Dc Power Distribution In A Central Station
  • In Case Of Dc Distribution
  • We Could Have Multiple Fast Chargers
  • Implemented As Dc/Dc Converters
  • Operating In Parallel And Serving Different Vehicles
  • Local Active Harmonics Compensation Is Ecommended As A Valid Option For Mitigating The Effect On The
  • In Compliance To Iec/Ts 61000-3-12
  • Among Power Quality Issues In Distribution Grids With Evs
  • Voltage Drops And Transformer Overloading Are Identified In This Work As Most Critical Situations [1
  • The Mitigation Of Voltage Drops Within A Central Station Requires The Local Analysis Of The Site And
  • In Compliance To En 50160
  • Transformer Overloading Can Be Prevented
  • Providing <Br/>Real-Time Access To The Local Power Flow Data
  • The Assumption Of 50% Transformer Average Loading Is Used As A Single Reference Point In The Current
  • For Future Investigations On Transformer Overloading
  • More Reference Points Might Be Necessary To Represent Various Transformer Loading Levels
  • The Subject Of Safety In Central Station Is Also Addressed
  • A Number Of Safety Rules Based On European Standards Apply To Ac Charging Equipment Up To 44 Kw
  • The Connection Interlock And The Automatic De-Energization Are Identified As Fundamental Requirement
  • The Connection Interlock Is A Solution Which Ensures That No Power Is Applied To The Dc Cable When T
  • The Automatic De-Energization Device Ensures That Whenever A Strain On The Cable Is Detected
  • Due To Vandalism
  • The Charge Supply Circuit Is Disconnected
  • More Electrical Vehicles On The Market Are Capable Today Of Quick Charging Up To 50 Kw Power Level
  • The Feasibility Of Central Stations With Fast Charging/Swapping Option
  • Their Capacity
  • Costs And Grid Impact
  • As Well As Battery Lifetime Issues [1]-[2]
  • Are Actual Concerns For Their Development
  • At The Same Time Fast Charging And Battery Swapping Stations Can Offer The Opportunity Of A New Conc
  • Which Is Somehow Similar To The Common Refueling Practice
  • From A Grid Perspective
  • Fast Charging And Battery Swapping Could Be An Opportunity For A Clean Utilization Of Renewable Ener
  • If This Technology Is Integrated With The Excess Of Power Generation From Green Sources

Abstract

Central Station Design Options - DTU Orbit (26/04/14) Central Station Design Options - DTU Orbit (26/04/14) Central Station Design Options. / Marra, Francesco (Editor). 2011. 44 p. Publication: Research › Report – Annual report year: 2011

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