Characteristic Test of Current Transformer Based EMTP Shoftware

DOI: https://doi.org/10.21070/jeee-u.v1i1.22

Author (s)


(1) * Ramadoni Syahputra   (Jurusan Teknik Elektro Fakultas Teknik Universitas Muhammadiyah Yogyakarta Jl. Ringroad Barat, Tamantirto, Kasihan, Yogyakarta 55183)  
        Indonesia
(*) Corresponding Author

Abstract


Pemodelan transformator arus merupakan salah satu cara yang praktis untuk mengevaluasi unjuk kerja perlengkapan proteksi. Pada makalah ini disajikan penggunaan perangkat lunak Electromagnetic Transients Program (EMTP), The Output Processor (TOP), dan Mathcad® untuk memodelkan transformator arus (CT) untuk mendapatkan kurva yang menunjukkan karakteristik transformator arus. Disajikan juga pengaruh beban terhadap faktor koreksi rasio dan faktor koreksi sudut fasa transformator arus.
Dalam makalah ini transformator arus dimodelkan menggunakan EMTP untuk memvisualkan arus dan tegangan CT. Keluaran dari EMTP ditransfer ke dalam Mathcad melalui perangkat lunak TOP untuk menguji transformator arus terhadap keakuratan dan pengaruh bebannya. Model transformator arus yang dibahas adalah model CT 1200/5 kelas C800. Hasil simulasi menunjukkan bahwa untuk uji karakteristik dengan metode 9 titik memberikan hasil yang terbaik untuk menampilkan karakteristik CT. Hasil simulasi uji eksitasi CT menunjukkan bahwa error rasio maksimum yang terjadi adalah 0,09%. Hasil simulasi ini mengindikasikan bahwa transformator arus ini dapat digunakan dalam aplikasi pengukuran.


Keywords

transformator arus; perlengkapan proteksi; model EMTP;



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