Analysis on Feasibility for Deeply Suppressing Switching Overvoltage in AC UHV Systems

被引：0
|
作者：
He J. [1 ]
Wu J. [1 ]
Meng P. [1 ]
Hu J. [1 ]
机构：
[1] State Key Laboratory of Control and Simulation of Power System and Generation Equipments, Department of Electrical Engineering, Tsinghua University, Beijing
来源：
He, Jinliang (hejl@tsinghua.edu.cn) | 2018年 / Science Press卷 / 44期
基金：
中国国家自然科学基金;
关键词：
Arrester; Electromagnetic transient; Insulation disposition; Overvoltage and its protection; UHV systems;
D O I：
10.13336/j.1003-6520.hve.20171227026
中图分类号：
学科分类号：
摘要：
Deeply suppressing the switching overvoltage of UHV systems will reduce the manufacturing cost and technical bottlenecks of UHV power apparatus. Based on the 1 000 kV UHV project from Huainan to Wannan, the switching overvoltages were numerically analyzed. The effects of suppressing the overvoltage for measurements were estimated, such as setting arresters on both ends, cooperation between arresters and closing resistance, setting a set of arresters in the middle of the line, and setting several sets of arresters along the line. The effects of above methods in suppressing the switching overvoltages were compared, and the feasibility was analyzed in aspects such as aging characteristics, the withstand capacity of power frequency overvoltage, and energy absorption capacity. On the baisis of advanced surge arrester technology, we can decrease the overvoltage level from 1.6U0~1.7U0 to 1.2U0~1.3U0(U0=898 kV), to realize the target to deeply suppress the switching overvoltage. © 2018, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
引用
收藏
页码：210 / 217
页数：7
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