STUDY OF THE IMPACTS OF UPFC UPON DYNAMIC POWER QUALITY

Öz

his paper designs the UPFC dynamic model after a briefly review to UPFC operating principles. Firstly, three-phase bridge full-controlled circuit is used to compose the converters, in which IGBT are employed as the switch components. Gate firing signals of IGBT are obtained using SPWM method. Secondly, whole UPFC model, together with a simple PI control rules, are accomplished after analyzing the transmission active and reactive power characteristics. Finally, the capabilities of the UPFC on enhancing transient stability, maintaining bus voltage and damping system oscillation are examed by simulation. Result graphics illustrate the unique capability of the UPFC to control the real and reactive power on a transmission line, while also regulating the local bus voltage simultaneously or independently.

Anahtar Kelimeler

• UPFC EMTDC, dynamic model, simulation, dynamic power quality

Kaynakça

1. C. D. Schauder, D.M. Hamai, A. Edris, “Operation of the Unified Power Flow Controller (UPFC) under Practical Constraints”. IEEE Transactions on Power Delivery, Vol. 13, No. 2, P630-639, April 1998.
2. Manzar Rahman, Mohammed Ahmed, Richard Gutman, “UPFC Application on the AEP System: Planning Considerrations”. IEEE Transactions on Power Systems, Vol. 12, No. 4, P1695-1701. November 1997.
3. C. Schauder, L. Gyugyi, E. Stacey, M.Lund, “AEP UPFC project: installation, commissioning and operation of the ±160MVA statcom (phase I)”. IEEE Transactions on Power Delivery, Vol. , No. 4, P1530-1535. October 1998.
4. B. A. Renz, A. Keri, A. S. Mehraban, C. Schauder, “AEP unified power flow controller performance”. IEEE Transaction on Power Delivery, Vol. 14, No. 4, P1374-1381. October
5. Jun-Yong Liu, Yong-Hua Song, P. A. Mehta, “Strategies for Handling UPFC Constraints in Steady-State Power Flow and Voltage Control”. Ieee Transactions On Power Systems, VOL.15, NO. 2, P566-571. MAY 2000.
6. N. Dizdarevic, S. Tesnjak, G. Andersson, “Converter Rating Powers of Unified Power Flow Controller”. IEEE proceedings, P603-609. Y. Ye, M. Kazerani, “Operating Constraints of FACTS Devices”. IEEE proceedings, P1579- 2000.
7. Kalyan K. Sen, Albert J. F. Keri, “Comparision of Field Results and Digital Simulation Results of Voltage-Sourced Converter-Based FACTS Controllers”. Ieee Transaction On Power Delivery, VOL. 18, NO. , P300-306. JANUARY 2003.
8. L. Gyugyi, C. D. Schstruder, A. Edris, “THE UNIFIED POWER FLOW CONTROLLER: A NEW APPROACH TO POWER TRANSMISSION CONTROL”. IEEE Transactions on Power Delivery, Vol. 10, No. 2, P1085-1097. April 1995.

9. D. Povh, M. Weinhold, “Basic Control of Unified Power Flow Controller”, IEEE Transactions on Power Systems. Vol. 12, No. 4, P1734-1739. November 1997.
10. S. Y. Ge, T S Chung, “Optimal Active Power Flow Incorprating Power Flow Control Needs in Flexible AC Transmission Systems”. IEEE Transactions on Power Systems, Vol. 14, No.2, P738-744. May 1999.
11. Edvina Uzunovic, “EMTP, Transient Stability and Power Flow Models and Controls of VSC Based FACTS Controllers”. Waterloo, Ontario, Canada, P135-140. 2001.
12. Tang Aihong， PH.D candidate，engaged in the operation and control of power system. Cheng Shijie, Professor, PH.D supervisor, engaged in intelligent control and stability of power system