00000cab a22000003a 4500 UP-99796217612899193 Buklod 20231008002016.0 m |o d | ta 181108s xx d | ||r ||||| || DENGII eng Jingke, Chen Analytic solution of electromagnetic transient in a polyphase transmission system Chen Jingke. pp. 42-56 For the first time, this paper gives analytic solutions in the time domain and natural frequencies of nonsymmetrical exciting system after solving the matrix partial differential equations which describe electromagnetic behavior on polyphase lossy-transmission lines, the frequency dependent parameters of which are considered, by using classical method strictly. It is beneficial to the analysis of principle of protections based on travelling wave and to the proposition of new criteria for protection. To verify the result, an example is taken which is offered by G.W. Smith [1] and solved by Bergeron's method [2]. In the paper, several concepts are given. At the appendix, the correctness of solutions is proved mathematically. Philippine Engineering Journal 8, 2 (1987). Also available online for University of the Philippines Diliman. Click here https://journals.upd.edu.ph/index.php/pej/article/view/8249 (viewed 20 January 2022) FI UPD DENG-II Article