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- W2393114532 abstract "In the heavy thunderstorm regions of southern China, composite insulators on high voltage transmission line have lightning trip accidents frequently. It is believed that the main reason is that composite insulators in some sections of the lines have insufficient arcing distance configuration and low lightning withstand level. Using a 220 kV double circuit transmission line on the same tower to simulate true type towers when window and conductors were taken in consideration, we conducted switching impulse and lightning impulse tests on composite insulators with different arcing distance in upper, middle and lower phase of the line. From the tests we obtained data and fitted curves of statistical 50% discharge voltage under switching and lightning impulses. The results indicate that, when the arcing distance of composite insulators increased by 0.15 m, their 50% discharge voltages under switching impulse increase by 54~65 kV and their 50% discharge voltages under lightning impulse increase by 80~84 kV. The lightning impulse 50% discharge voltage of unit arcing distance of compositors with test true type tower window is approximately 5.6% higher than that with cross arm only. The results are helpful to the selection of transmission line composite insulator, especially in heavy thunderstorm regions." @default.
- W2393114532 created "2016-06-24" @default.
- W2393114532 creator A5042464077 @default.
- W2393114532 date "2014-01-01" @default.
- W2393114532 modified "2023-09-26" @default.
- W2393114532 title "Switching and Lightning Impulse Discharge Characteristics of Composite Insulators for 220 kV Double Circuit Transmission Line on the Same Tower" @default.
- W2393114532 hasPublicationYear "2014" @default.
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