Hybrid Simulation of Power Systems with Dynamic Phasor SVC Transient Model

This paper proposes a new hybrid simulator which interfaces a dynamic phasor (DP) model of a static VAR compensator (SVC) into the conventional transient stability program (TSP). In this hybrid simulator, the electromagnetic transient simulation of SVC is implemented using dynamic phasor model while the transient stability simulation of the external system is carried out using fundamental phasor model. By taking the fundamental and fifth harmonics into consideration, the dynamic phasor model of SVC presented in this paper is a large-signal, time- variant model which can simulate the nonlinear characteristics of SVC with fast execution speed and high accuracy. The use of DP modeling eliminates the problem of phase discontinuity and dc-offset found in conventional TSP-EMTP hybrid simulation. The effectiveness of this approach is validated using the benchmark results obtained by the DCG EMTP software on the 9-bus and New England 39-bus power systems.

[1]  J. M. Noworolski,et al.  Generalized averaging method for power conversion circuits , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[2]  R. Adapa,et al.  Combined transient and dynamic analysis of HVDC and FACTS systems , 1998 .

[3]  Neville R. Watson,et al.  A new hybrid algorithm for analysis of HVDC and FACTS systems , 1995, Proceedings 1995 International Conference on Energy Management and Power Delivery EMPD '95.

[4]  Yixin Ni,et al.  Multi-infeed HVDC/AC power system modeling and analysis with dynamic phasor application , 2005, 2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific.

[5]  Ka Wing Chan,et al.  Evaluation study for the integration of electromagnetic transients simulator and transient stability simulator , 2005 .

[6]  George C. Verghese,et al.  SSR analysis with dynamic phasor model of thyristor-controlled series capacitor , 1999 .

[7]  Mehrdad Ehsani,et al.  Analysis of power electronic converters using the generalized state-space averaging approach , 1997 .

[8]  J. Arrillaga,et al.  Computation of A.C.-D.C. System Disturbances - Part I. Interactive Coordination of Generator and Convertor Transient Models , 1981, IEEE Transactions on Power Apparatus and Systems.

[9]  Aleksandar M. Stankovic,et al.  Modeling of UPFC Operation under Unbalanced Conditions with Dynamic Phasors , 2002, IEEE Power Engineering Review.

[10]  Vaithianathan Venkatasubramanian,et al.  Tools for dynamic analysis of the general large power system using time-varying phasors , 1994 .

[11]  R. Adapa,et al.  A new approach to dynamic analysis of AC networks incorporating detailed modeling of DC systems. I. Principles and implementation , 1988 .

[12]  L. A. Snider,et al.  Interfacing an electromagnetic SVC model into the transient stability simulation , 2002, Proceedings. International Conference on Power System Technology.