hpfc_seminar_01.ppt
- 1. October 31/2003 © Copyright by J. Bebic 2003 A Symmetrical Hybrid Power Flow Controller Jovan Bebic, P.Eng.
- 2. H P F C Slide 2 of 15 Overview VSC Basics Converter Based FACTS Devices Proposed Topology Steady-State Operation Reachable Sets and P- Curves Dynamic Control Summary Future Work
- 3. H P F C Slide 3 of 15 VSC Basics Q P P
- 4. H P F C Slide 4 of 15 Converter Based FACTS Compensators SSSC S V R V 0 P S I R I Q 1 V 2 V S X R X STATCOM S V R V 0 P S I R I Q S X R X M V UPFC S V R V P S I R I E Q S X R X 1 V P B Q 2 V P
- 5. H P F C Slide 5 of 15 Proposed Topology HPFC S V R V S I R I S X R X M V M Q 1 V 2 V
- 6. H P F C Slide 6 of 15 HPFC S V R V S I R I S X R X M V 1 V 2 V X V Y V X P Y P M I DC V DC C M B X Xmax V V S Xmax I I Y Ymax V V R Ymax I I 1 1max V V 2 2max V V M Mmax V V X Y P P HPFC S V R V S I R I S X R X M V 1 V 2 V X V Y V X P Y P M I DC V DC C M B S P 1 P 2 P R P Limits and Constraints X Y P P 1 2 P P S R P P
- 7. H P F C Slide 7 of 15 Equal Power Lines S1 I S2 I S V S S S P V I S P const S I R I S V R V S P const R P const S V R V 1 V 2 V S I R I 1 S S S 2 R R R jX jX V V I V V I S V R V 1 V 2 V M I S I R I M V M S R M M M jB I I I I V S V R V X V Y V 1 V 2 V M I S I R I M V X 1 M Y 2 M V V V V V V
- 8. H P F C Slide 8 of 15 Steady-State Operation S V R V X V Y V 1 V 2 V M I S I R I M V S V R V X V Y V 1 V 2 V M I S I R I M V S V R V X V Y V 1 V 2 V M I S I R I M V S V R V Y V X V 2 V 1 V M I S I R I M V S V R V X V Y V 1 V 2 V M I S I R I M V
- 9. H P F C Slide 9 of 15 Reachable Sets S R Xmax Xmax Ymax Ymax Line Parameters Equipment Limits & X ,X V ,I ; V ,I S R Line Conditions , , V V S R , I I 1 1 2 , , P Q Q
- 10. H P F C Slide 10 of 15 P- Curves
- 11. H P F C Slide 11 of 15 System Properties A system of variable structure, with infinitely many internal operating points, for every line operating point. A nonlinear control problem
- 12. H P F C Slide 12 of 15 Dynamic Control table lookup 1 1 2 Sref Rref , , , P Q Q I I X Y S R use , to control , V V I I Operator specifies 1 1 2 , , P Q Q
- 13. H P F C Slide 13 of 15 HPFC S V R V S I R I S X R X M V 1 V 2 V X V Y V X P Y P M I DC V DC C M B S P 1 P 2 P R P Controlling the Power Balance of Converters S V R V M I S I R I M V S I DC v DC i Sed v Seq v 2 2 x y x y * DC v * DC i x y x y Sref i
- 14. H P F C Slide 14 of 15 Summary HPFC UPFC Power flow control Improves first swing stability margin Topological symmetry Able to utilize existing shunt compensation
- 15. H P F C Slide 15 of 15 Future Work Study machine based equivalents. Study dual topology. Formulate “optimality” algorithms based on “reachable sets” algorithms. Optimize the controller. Apply the concept of “equal power lines” in load flow programs.