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 a combination of the ION_Data database of Power Measurement, PQSecure database of Unipower, protection relay data of SEL and protection relay data of AREVA improvement Power Quality Database of Provincial Electrical Authority 2.0 (PQPEA2.0) using Web-based technology. The Provincial Electrical Authority (PEA) will have to spend a lot of money on power quality meters in order to...
Voltage sags is a problem affecting the electrical qualities. In this paper, effects of small and large induction motors on voltage sag profile are compared and discussed. The study results show that as the fault is initiated, reactive power contribution from the large HP motor is more significant to prevent fast collapse of the voltage, resulting in non-rectangular shape of sag. The motor's negative...
Voltage sags are responsible for nuisance process trips in modern automated industrial facilities, thereby resulting huge financial losses to customers. Therefore, both utility as well as customers are having greater concerns for the improvement in power quality. Electrical utilities are aware that any level of customer voltage sag quality is achievable through the use of mitigation devices such as...
This paper analyzes the impacts of Distributed Generation (DG) disconnecting time on utility and DG, especially the impact on utility reclosing time. The reclosing time is a temporary interval that a utility protective device is opened after a fault occurrence. Generally, DG must be disconnected before the end of this reclosing time. Mostly, DG may be requested to be disconnected after a fault occurrence...
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.