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.
UAVs (Unmanned Aerial Vehicles) have been widely used in power line inspections, but low autonomous cruise capacity of UAVs requires strict condition for operators and site while landing during UAV power line inspections. This paper presents an autonomous landing control technique for UAVs when charging at the electric towers based on vision positioning method. The proposed system consists of three...
Existing quick or early detection and identification methods for short fault are based on the sharp increase of the short current to extract the fault features in low-voltage system. They all have a technical bottleneck problem of miscarriage of justice, which is affected by the noise of the distribution system and the non-fault running state interference caused by different load starting or switching...
Because of the limited information interaction between protective electrical apparatuses in different distribution levels, rapidity and global selectivity are difficult to achieve concurrently in short-circuit fault protection. Based on short-circuit fault early detection, a fast and selective protection technology in low voltage distribution systems was presented, in which the effective interaction...
Alkaline diagnesis is a diagenetic process that a reservoir undergoes under an alkaline environment. Because of the influence of alkaline formation water, the most typical characteristics of diagnesis is that quartz is obviously dissolved, feldspar is massively enlarged, and less late carbonate cement is formed in the evolution of carbonate minerals. With the decrease of the alkalinity of the formation...
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.