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.
The pole discrepancy fault of hydropower units and gas-turbine units may easily occur due to its frequent open and close operations. This cannot be detected by the traditional protection during the initial period of grid-connection and in the normal operation of grid-disconnection. This paper applies the symmetrical component method to analyze the voltage characteristics of both sides of breaking...
A kind of high resistance grounding methods of generators is few applied by a 3-phase displacement transformer, which is called Pohl (or Bütow) transformer. The secondary asymmetry of the Pohl transformer yields a fundamental zero-sequence displacement voltage so that the biased stator earth fault (SEF) 100% protection can be applied. The law of the fundamental zero-sequence voltage variation under...
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.