交流特高压线路抑制过电压避雷器安装方案研究OA
Research on the Installation Scheme of Overvoltage Surge Arresters for AC Ultra High Voltage Transmission Lines
西南某特高压交流工程部分变电站和线路处于高海拔地区,由于空气间隙放电电压随海拔升高而显著降低,可能造成间隙和设备尺寸增大,造价提升.深度控制高海拔特高压工程操作过电压水平,有利于减小塔头尺寸,提高工程经济性.通过在线路中部装设1组额定电压780 kV的避雷器,可将线路操作过电压水平控在1.5 p.u.,结合抑制过电压避雷器初步方案图纸,提出交流特高压线路抑制过电压避雷器的安装方案.
Some substations and transmission lines in a UHV AC project in Southwest China are located in high-altitude areas.As the air gap discharge voltage decreases significantly with increasing altitude,this may lead to enlarged insulation clearances,increased equipment dimensions,and higher construction costs.Deep control of switching overvoltage levels in high-altitude UHV projects can effectively reduce tower head dimensions and improve project economy.By installing a set of metal oxide arresters with rated voltage of 780 kV at the mid-point of the transmission line,the switching overvoltage level can be controlled within 1.5 p.u.Based on preliminary scheme drawings of overvoltage suppression arresters,this paper proposes an installation scheme for UHV AC transmission line overvoltage suppression arresters.
王征;米凯;郭瑞;杨磊
中国电力工程顾问集团西北电力设计院有限公司,陕西 西安 710075中国电力工程顾问集团西北电力设计院有限公司,陕西 西安 710075中国电力工程顾问集团西北电力设计院有限公司,陕西 西安 710075中国电力工程顾问集团西北电力设计院有限公司,陕西 西安 710075
信息技术与安全科学
交流特高压操作过电压空气间隙避雷器
AC UHVswitching overvoltageair gaplightning arrester
《电力勘测设计》 2026 (2)
22-26,88,6
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