Implicitly Coupled Electromechanical and Electromagnetic Transient Analysis Using a Frequency-Dependent Network Equivalent

This paper presents an improved solution of the implicitly coupled electromechanical and electromagnetic transient analysis problem using a frequency-dependent network equivalent (FDNE). In previous work, the fundamental frequency equivalent was used as the network equivalent of the external system. While simple, this fundamental frequency equivalent is only accurate for a single frequency, the fundamental frequency. This may lead to an inaccurate equivalent of the transient stability (TS) network. This paper extends previous work by using an FDNE derived from the vector-fitting technique. The FDNE is able to resolve the transient behavior over a wider frequency spectrum leading to a more accurate representation of the TS network. Results demonstrating the accuracy of the proposed scheme are presented on a 3-bus test system and the IEEE 118-bus system.

[1]  Narain G. Hingorani,et al.  Simulation of AC System Impedance in HVDC System Studies , 1970 .

[2]  Xu Zhang,et al.  Equivalent models for implicitly-coupled electromechanical and electromagnetic transient analysis , 2014, 2014 North American Power Symposium (NAPS).

[3]  A. S. Morched,et al.  Multi-port frequency dependent network equivalents for the EMTP , 1993 .

[4]  A. Semlyen,et al.  Rational approximation of frequency domain responses by vector fitting , 1999 .

[5]  B. Gustavsen,et al.  Improving the pole relocating properties of vector fitting , 2006, 2006 IEEE Power Engineering Society General Meeting.

[6]  B. Gustavsen.  Fast Passivity Enforcement for Pole-Residue Models by Perturbation of Residue Matrix Eigenvalues , 2008, IEEE Transactions on Power Delivery.

[7]  V. Brandwajn,et al.  Transmission Network Equivalents for Electromagnetic Transients Studies , 1983, IEEE Transactions on Power Apparatus and Systems.

[8]  Magdy M. A. Salama,et al.  Frequency dependent network equivalents for electromagnetic transient studies , 1999 .

[9]  Neville R. Watson,et al.  z-domain frequency-dependent AC-system equivalent for electromagnetic transient simulation , 2003 .

[10]  Taku Noda,et al.  Reduced-order realization of a nonlinear power network using companion-form state equations with periodic coefficients , 2004 .

[11]  A. J. Flueck,et al.  An implicitly-coupled solution approach for combined electromechanical and electromagnetic transients simulation , 2012, 2012 IEEE Power and Energy Society General Meeting.

[12]  Yi Zhang,et al.  Development and Analysis of Applicability of a Hybrid Transient Simulation Platform Combining TSA and EMT Elements , 2013, IEEE Transactions on Power Systems.

[13]  Shrirang Abhyankar.  DEVELOPMENT OF AN IMPLICITLY COUPLED ELECTROMECHANICAL AND ELECTROMAGNETIC TRANSIENTS SIMULATOR FOR POWER SYSTEMS , 2011 .

[14]  Jos Arrillaga,et al.  Frequency-dependent AC system equivalents for harmonic studies and transient convertor simulation , 1988 .

[15]  N.R. Watson.  Improved fitting of z-domain frequency dependent network equivalents for electromagnetic transient simulation , 2007, 2007 International Power Engineering Conference (IPEC 2007).

[16]  Xu Zhang,et al.  Development of a parallel three-phase transient stability simulator for power systems , 2011, HiPCNA-PG '11.

[17]  T. Dhaene,et al.  Macromodeling of Multiport Systems Using a Fast Implementation of the Vector Fitting Method , 2008, IEEE Microwave and Wireless Components Letters.

[18]  K. Strunz,et al.  Interfacing Techniques for Transient Stability and Electromagnetic Transient Programs IEEE Task Force on Interfacing Techniques for Simulation Tools , 2009, IEEE Transactions on Power Delivery.

[19]  B. Gustavsen,et al.  Inclusion of Rational Models in an Electromagnetic Transients Program: Y-Parameters, Z-Parameters, S-Parameters, Transfer Functions , 2013, IEEE Transactions on Power Delivery.

[20]  B. Gustavsen,et al.  Fast Passivity Enforcement for S-Parameter Models by Perturbation of Residue Matrix Eigenvalues , 2010, IEEE Transactions on Advanced Packaging.