Power  Flow  Control  Technology  Opportuni5es  

Joe  E.  Schatz  Southern  Company  

Feb.  21,  2014  

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Power  Flow  Control  Opportuni5es  

•  Power  Flow  Control  Techniques  at  the  U5lity  Scale  Will  Include  Some  Form  of  Power  Electronics  

•  Although  not  new,  Power  Electronics  Based  Solu5ons  being  Developed  and  Accepted  by  U5li5es  on  a  more  regular  basis.  

•  Acceptance  Started  on  Customer  Side  –    

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Edge  of  Network  Grid  Op5miza5on  3  

Power  Electronics  Based  Transformer  4  

Source: Electric Power Research Institute

Hybrid  Transformer  5  

R&D Field prototype tested at Southern Co. (Calera, AL) •  500 kVA /12.47 kV/480 V •  Voltage Regulation ±10% •  Remote communication

Energy  Storage  •  Community  Energy  Storage  

–  Two  5kW  /  20kWh  Lithium  Ion  BaWeries  integrated  w/  PV  

–  Two  40kW  /  50kWh  Lithium  Ion  BaWeries  

•  Large  Scale  Energy  Storage  –  1MW  /  2MWh  Lithium  Ion  BaWeries  Integrated  w/  PV  

•  Completed  Southern  Company  Energy  Storage  Study  

•  Energy  Storage  Valua5on  Tool  

Compact  Dynamic  –Phase  Angle  Regulator  7  

‣  Grounded  CD-­‐PAR  will  be  tested  on  12kV  circuit.  ‣  13  kV/  13  kV  isola5on  transformer  with  taps  on  one  winding.    ‣  40  kVA  CD-­‐PAR  converter.  ‣  Control  range  +/-­‐  3.5  %  ‣  Will  be  tested  in  both  voltage  regula5on  and  power  router  mode.  

Southern  Company  Installa5on  

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Southern Company Installation

Installa5on  Summary  •  Applica5on:  Mi5gate  overload  during  n-­‐1  con5ngency  

without  using  prior  solu5on,  a  permanently  online  air  core  reactor  

•  Installa5on  Loca5on:  two  115  kV  lines  •  Conductor  Rated  Temps:  one  at  100o  C,  one  at  210o  C    •  Installed:  March  2013  

•  Use  Case  Tes5ng:  June  2013  •  DSR  Genera5on:  Genera5on  1  •  Models  Installed:  1000  A,  1500  A  •  Number  of  DSRs  Installed:  33  

•  Number  of  SuperDSRs  Installed:  3  •  Addi5onal  Units  Ordered  for  Con5nued  Deployment  

DSR  Results:  Grady-­‐West  End  9  

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6:30  AM   6:44  AM   6:59  AM   7:13  AM   7:27  AM   7:42  AM   7:56  AM  

Indu

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Phase  Cu

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Time  (central)  

Phase_2_Current(A)   Phase_3_Current(A)   Phase_1_Current(A)  

Phase_2_Inductance(uH)   Phase_3_Inductance(uH)   Phase_1_Inductance(uH)  

Thank  You  10