The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents the analysis and observation results of the induced voltage waveforms caused by nearby natural lightning on overhead power lines in the Guangzhou field experiment site during the summer of 2008. Peak values of the induced voltage for 36 natural lightning return strokes ranged from 0.21 to 3.87 kV. And the double-peak oscillation phenomenon can be found in the waveforms. The interval...
Lightning transient characteristics of the grounding grid is the fundamental performance for lightning protection of the substation. The stability and safety of the 500-kV substation is of great importance to the safe operation of the power system. The characteristic of grounding grid is quite different from that at the power-frequency condition when subject to lightning impulse current. Using CDEGS...
The Yangtze River Bridge studied in this paper is a three-tower steel concrete structure cable stayed bridge with two sides steel cable, composite girder cable stayed bridge and the largest span between towers in the world. The lightning density at the bridge site is much higher than the average value of Wuhan city, so it is important to access the lightning safety. This paper analyzes the lightning...
The article focuses on the residual voltage characteristics of surge protective device during natural lightning induction based on the field observation and lab tests. In natural lighting, induced voltage waveforms and amplitudes generated on the live conductor and the neutral conductor are basically consistent, the amplitude and steepness of the voltage at the household side are higher than those...
This paper carries out a summary and analysis on the observation result of induced voltage waveforms caused by nearby natural lightning on 220-V rated low-voltage overhead distribution lines in Guangzhou Field Experiment Site for Lightning Research and Testing (GFESLRT) during Summer 2008. It can be observed that when surge protective device (SPD) is not connected, the maximum peak value of induced...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.