中国电机工程学报2012，Vol.32Issue(16)：157-164,8.
动态电弧模型下特快速瞬态过电压特性的计算与分析
Calculation and Analysis of Very Fast Transient Over-voltage Characteristic on the Condition of Dynamic Arcing Model
摘要
Abstract
In the process of simulation calculation of very fast transient over-voltage （VFTO）, establishing an accurate high-frequency arc model is a key factor to improve the accuracy of VFTO. A dynamic arcing model was presented based on the segmental arcing model. In the pre-breakdown stage, hyperbolic time-varying resistance was used in the model to consider the impact of breakdown delay time on VFTO waveform; in the extinction phase, a complete Mayr model was established to describe the dynamic physicalprocesses of arc. Moreover, taking the 1 lOOkV station as an example, this paper calculated the amplitude, the frequency and the gradient of VFTO in gas insulated substation （GIS） on the condition of two arcing models, and discussed the influence of breakdown delay time on VFTO waveform. It is found that VFTO has higher magnitude, higher frequency and higher gradient under the dynamic arcing model; breakdown delay time affects the initial rise time and amplitude of VFTO. By comparing VFTO simulation results with the measured data, it is found that the dynamic arcing model is the further improvement of the segmental arcing model and has great significance for improving the accuracy of the simulation calculation of VFTO.关键词
动态电弧模型/特快速瞬态过电压特性/仿真计算Key words
disconnector/ultra-high voltagedynamic arcing model/gas insulate substation/transient over-voltage (VFTO) (UHV)/very fast分类
信息技术与安全科学引用本文复制引用
林莘,王娜,徐建源..动态电弧模型下特快速瞬态过电压特性的计算与分析[J].中国电机工程学报,2012,32(16):157-164,8.基金项目
教育部高等学校博士学科点专项科研基金 （）
辽宁省自然科学基金项目（201102169）. （）
