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.
Slanting Grounding Rod is a new three-dimensional structure of long grounding rod. In the paper it has been in-depth analysis from both effect of resistance reduction and design programs. Different from conventional Vertical Grounding Rod, there is an angle between grounding rod and ground's vertical direction. Therefore effectively solve the problem that both effect and cost of resistance reduction...
A set of uncertain branches related with each other is defined as an uncertain branch group for grounding grid corrosion diagnosis. The methodology to determine uncertain branch groups is described. It is pointed out that evaluation of uncertain branches can be carried out in uncertain branch groups, respectively. A novel method based on dichotomy to calculate the maximum and minimum resistances of...
To benefit the fault detection and identification of conductor corrosion fault, a hierarchical simplified model of grounding grids is put forward. Minimum unit dividing is the key process of hierarchical simplification, which can be realized by the proposed algorithm. Branches are classified into clear branch and uncertain branch. A Monte-Carlo based testability evaluation approach is suggested. The...
The requirements of a good test scheme are described, such as independent excitation, none-repeated measurement, large voltage signals and sensitive to the changes of branch resistances. Reciprocity theorem and superposition theorem can be used to determine whether a test scheme is completed. Theorem of Maximum Voltage is proved through reduction to absurdity, and its three inferences are put forward,...
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.