CAJ | 학술논문

数值仿真是获得特快速暂态过电压(very fast transient overvoltage，VFTO)波形及研究其特性的重要方法。针对VFTO多次脉冲的全过程，提出了一种基于时域有限元(time domain finite element method，TDFEM)的VFTO仿真计算方法。构建了计及残余电荷电压的传输母线与集中参数元件的时域有限元模型，并通过与国际上认可的电磁暂态计算程序EMTP 的计算结果进行对比，验证了该方法的有效性。与EMTP的计算方法相比，该方法可以对VFTO全过程进行仿真计算，可以充分考虑母线残余电荷电压的分布特性，以及可以获得传输线沿线所有点的电压和电流离散值。
수치방진시획득특쾌속잠태과전압(very fast transient overvoltage，VFTO)파형급연구기특성적중요방법。침대VFTO다차맥충적전과정，제출료일충기우시역유한원(time domain finite element method，TDFEM)적VFTO방진계산방법。구건료계급잔여전하전압적전수모선여집중삼수원건적시역유한원모형，병통과여국제상인가적전자잠태계산정서EMTP 적계산결과진행대비，험증료해방법적유효성。여EMTP적계산방법상비，해방법가이대VFTO전과정진행방진계산，가이충분고필모선잔여전하전압적분포특성，이급가이획득전수선연선소유점적전압화전류리산치。
The numerical simulation is an important method for obtaining very fast transient overvoltage(VFTO) waveforms and studying the characteristics of VFTO. This paper presented a new VFTO whole process simulation method based on time domain finite element method(TDFEM). The transmission line model and lumped parameter element models were established by TDFEM, and the VFTO calculation results by internationally recognized electromagnetic transient program (EMTP) and TDFEM were compared to verify the correctness of the proposed method. The proposed method can calculate the whole process of VFTO and the voltage and current discrete values at all points along the transmission line. At the same time, the trapped charge distribution characteristics of the transmission line could be taken into consideration.