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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
ctan
ce (µ
H)
Phase Cu
rren
t (A)
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