| 750kV GIS中隔离开关的分合闸电阻对快速暂态过电压的影响 |
| |
| 引用本文： | 余芳,贾磊,周春雨,郭洁.750kV GIS中隔离开关的分合闸电阻对快速暂态过电压的影响[J].电瓷避雷器,2008(4). |
| |
| 作者姓名： | 余芳 贾磊 周春雨 郭洁 |
| |
| 作者单位： | 西安交通大学电气工程学院,西安710049 |
| |
| 摘 要： | 随着超高压气体绝缘变电站(GIS)的广泛使用,由隔离开关(DS)操作引起的快速暂态过电压(VFTO)的危害更加明显。以西北地区750kV官亭GIS变电站为计算原型,利用EMTP程序对40种运行方式进行数值仿真计算,建立不含分合闸电阻和含有分合闸电阻DS计算模型。计算结果表明:分合闸电阻对降低VFTO幅值和陡度有明显作用,加入分合闸电阻比不加分合闸电阻时的最大VFTO幅值降低了50%,陡度降低为14%,电压在1kV以上最高频率降为10%。
|
| 关 键 词： | 气体绝缘变电站 快速暂态过电压 隔离开关 分合闸电阻 |
Influence of Opening and Closing Resistor of Disconnecting Switches to VFTO in 750 kV GIS |
| |
| YU Fang,JIA Lei,ZHOU Chun-yu,GUO Jie.Influence of Opening and Closing Resistor of Disconnecting Switches to VFTO in 750 kV GIS[J].Insulators and Surge Arresters,2008(4). |
| |
| Authors: | YU Fang JIA Lei ZHOU Chun-yu GUO Jie |
| |
| Abstract: | The application of gas insulated substation(GIS) has expended year by year, Harm of the very fast transient voltages (VFTO) caused during disconnecting switches (DS) operation becomes more obvious. This paper refers to 750 kV GIS of Guanting substation in northwest China power system. With the electro-magnetic transient program(EMTP), the VFTO under 40 operation models was simulated and calculated. According to different models of DS, the effect of opening and closing resistor was analyzed. Compared with the results of DS without resistor, the amplitude and steepness of VFTO decreased by 50% and 14%.The highest frequency of component with voltage above 1 kV reduced to 10%. |
| |
| Keywords: | GIS VFTO DS opening and closing resistor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
