电网技术2012，Vol.36Issue(1)：182-188,7.
高压直流输电线路V型串塔头间隙操作冲击放电电压的海拔校正
Altitude Correction of Switching Impulse Flashover Voltage of Tower Gaps With V-shaped Insulator Strings for HVDC Power Transmission Lines
廖蔚明 1丁玉剑 1孙昭英 1宿志一1
作者信息
- 1. 中国电力科学研究院,北京市海淀区100192
- 折叠
摘要
Abstract
The results obtained from contrast tests on switching impulse flashover characteristics of tower gaps under different altitudes by two simulation models with true sizes and actual layouts for V-shaped insulator strings are presented. Based on the curves of switching impulse flashover characteristics of tower gaps obtained respectively from test bases located at Beijing and Tibet individually and the latter is at the region with altitude of 4 300 m, the curves of switching impulse flashover characteristics for tower gaps located at the regions with altitudes of 4 000 m and below are calculated by interpolation method. After analysis and calculation, the altitude-corrected calculation formula of switching impulse flashover characteristics curves for tower gaps, which is suitable to the regions with altitudes of 4 000 m and below, is obtained. The comparison of altitude correction computing formula obtained from tests with the formula recommended by IEC 60071-2： 1996, which is common used currently, is performed, and the difference between the values of correction factors m in the two formulae as well as the impact of the two correction factors on switching impulse flashover voltage are analyzed.关键词
高压直流输电线路/空气间隙/操作冲击/海拔校正Key words
HVDC transmission line/air gaps/switchingimpulse/altitude correction分类
信息技术与安全科学引用本文复制引用
廖蔚明,丁玉剑,孙昭英,宿志一..高压直流输电线路V型串塔头间隙操作冲击放电电压的海拔校正[J].电网技术,2012,36(1):182-188,7.
