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.
Nowadays electric utilities are facing major problems due to the ageing and deterioration of high voltage (HV) power equipments in their operating service period. There are several solid materials are used in high voltage power system equipments for insulation purpose. The insulators used in HV power equipment always have a small amount of impurity inside it. The impurity is mainly in the form of...
In power systems, varieties of insulation materials are used to protect the high voltage power apparatus such as transformer, switchgear, current transformer, potential transformer etc. One of the most common liquid insulating materials used as a dielectric medium in transformers is the transformer oil. The transformer oil is degraded due to the combination of the ageing processes such as partial...
In electrical power systems, high voltage power transformers are used to transfer the power from one substation to another. The insulation of the high voltage power transformers are gradually deteriorated due to electrical, chemical and mechanical stresses caused by the partial discharges (PDs). It is well established from several studies that PDs are the major source of insulation failure in HV power...
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.