577A Electrical Transient Interaction Between Transformers and the Power System Part 1- Expertise Joint Working Group A2/C4.39 April 2014 9 L t t 9 ELECTRICAL TRANSIENT INTERACTION BETWEEN TRANSFORMERS AND THE POWER SYSTEM – PART 1: EXPERTISE JWG A2/C4.39 a A. da C. O. Rocha Convenor (BR) A. Holdyk (DK) B. Gustavsen (NO) B. -. -aarsveld (ZA) A. Portillo (1Y) B. Badr2adeh (A1) C. Roy (ES) E. Rahimpour (DE) G. H. da C. Oliveira (BR) H. Motoyama (-P) M. Heindl (DE) M5O. Roux (CA) M. Popov (NL) M. Rioual (FR) P. D. Mundim (BR) R. Degeneff (1S) R. M. de A2evedo (BR) R. Saers (SE) R. Wimmer (DE) S. Mitchell (A1) S. Okabe (-P) T. Abdulahovic (SE) T. Ngnegueu (FR) X. M. Lopez5Fernandez (ES) Corresponding members A. Troeger (CH) C. Alvarez5Mari9o (ES) D. Peelo (CA) D. Matveev (R1) G. A. Cordero (ES) -. C. Mendes (BR) -. Leiva (AR) -. M. Torres (PT) -. :eens (NL) M. Reza (SE) R. Asano (ES) R. Malewski (CA) S. Yamada (-P) 1. Savadamuthu (IN) Z. -. 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ISBN : 978-2-85873272-2 Page 1 9 L t t 9 Electrical Transient Interaction between Transformers and the Power System – Part 1: Expertise Table of Contents EXECUTIVE SUMMARY............................................................................................................... 6 INTRODUCTION ...................................................................................................................... 8 1.1 References ................................................................................................................................................................ 9 2 STANDARDS AND SERVICE EXPERIENCE ............................................................................. 0 2.1 Introduction ............................................................................................................................................................ 10 2.2 Standards............................................................................................................................................................... 10 2.3 Service E6perience ............................................................................................................................................... 13 2.3.1 Generator Step51p Transformer 990M:A 21.4A/A00k: – Canada ................................................... 13 2.3.2 Auto5Transformer 200M:A A00/34A/13.2k: – 1nited States ............................................................. 14 2.3.3 Generator Step51p Transformer CAM:A 230/1Dk: – Me6ico ............................................................. 14 2.3.4 Autotransformer 240M:A 400/132k: – 1nited Kingdom ...................................................................... 14 2.3.A Autotransformer 1A0M:A 230/1D1/13.Ek: – Bra2il .............................................................................. 14 2.3.D Autotransformer 400M:A A00/34A/13.Ek: – Bra2il .............................................................................. 14 2.3.C Regulator Transformer 33M:A 230/DD.9544/13.2k: – Bra2il ............................................................. 14 2.3.E Regulator Transformer 300M:A A00/4D0/13.Ek: – Bra2il .................................................................. 1A 2.3.9 Distribution Transformer 10M:A CCk: – -apan ........................................................................................ 1A 2.3.10 Rectifier Transformer 2D.4k: – 1nited States ........................................................................................... 1A 2.3.11 Autotransformers 31AM:A 400/220/22k: and 330/220/22k: – South Africa ......................... 1A 2.3.12 Generator Step51p Transformer 1EAM:A A00k: – Bra2il .................................................................. 1A 2.3.13 Auto Transformer bank 1100M:A CA0/410/1Ek: – Hungary .......................................................... 1A 2.3.14 Autotransformer A00/2CAk: – -apan ....................................................................................................... 1D 2.3.1A Generator Step51p Transformer A00M:A CDA/2Ak: – Au6iliary Transformer E0M:A CDA/13E/34.Ak: – 1nited States ........................................................................................... 1D 2.3.1D H:DC Convertor Transformer 234 M:A 400/93 k: Yy5Yd – India ................................................... 1D 2.4 Work of Previous Groups ................................................................................................................................... 1D 2.A References ............................................................................................................................................................. 1C 3 ELECTRICAL NETWORK TRANSIENT MODELLIN, ................................................................. 9 3.1 Introduction ............................................................................................................................................................ 19 3.2 Substations ............................................................................................................................................................. 19 3.3 1pstream network ................................................................................................................................................ 20 3.3.1 Low freFuencies studies ..................................................................................................................................... 20 3.3.2 Switching studies .................................................................................................................................................. 20 3.3.3 Lightning studies .................................................................................................................................................. 21 3.4 Overhead lines and underground cables ....................................................................................................... 22 3.4.1 Parameter determination .................................................................................................................................. 22 3.4.2 Travelling wave5type models ........................................................................................................................... 22 3.4.3 Lumped5parameter type models ..................................................................................................................... 23 3.A Surge arresters ..................................................................................................................................................... 23 3.D Circuit breakers and disconnectors ................................................................................................................... 2C Page 2 9 L t t 9 3.D.1 Circuit Breakers .............................................................................................................................................. 2C 3.D.2 Disconnectors................................................................................................................................................... 29 3.C References ................................................................................................................................................................... 29 . TRANSFORMER MODELLIN, ................................................................................................ 33 4.1 Simplified procedures ......................................................................................................................................... 34 4.1.1 Power freFuency standard model with e6ternal capacitance added .................................................... 34 4.1.2 Concentrated Capacitance Model for Fast Transients ............................................................................... 3A 4.1.3 FreFuency dependent transformer model for fast transients .................................................................... 3D 4.2 White bo6 approach........................................................................................................................................... 40 4.2.1 FreFuency Dependence ..................................................................................................................................... 41 4.2.2 Computation Methods for Transients .............................................................................................................. 41 4.2.3 Mathematical Model .......................................................................................................................................... 41 4.2.4 Lossy Lumped Parameters