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Insulator and Clearance Requirements in Overhead Line Transmission Systems without Shield Wires

机译:无屏蔽线的架空线传输系统中的绝缘子和电气间隙要求

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This paper theoretically examines the required insulation lengths and clearances in 400 kV overhead line systems when not making use of grounded shield wires as lightning protection. The influence of lightning strikes on the insulator flashover rate in the system is investigated based on dynamic transmission line simulations of a 400 kV section in PSCAD/EMTDG The performance of the system without shield wires is considerably deteriorated if no steps are taken to increase the insulation level of the system. However by considerably increasing the insulator lengths and clearances in the system the performance can be improved.
机译:从理论上讲,在不使用接地屏蔽线作为避雷装置的情况下,本文研究了400 kV架空线系统所需的绝缘长度和电气间隙。基于PSCAD / EMTDG中400 kV部分的动态传输线模拟,研究了雷击对系统中绝缘子闪络率的影响。如果不采取任何措施来增加绝缘,则没有屏蔽线的系统的性能将大大降低。系统级别。但是,通过显着增加系统中绝缘子的长度和间隙,可以提高性能。

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