Recognition and classification of different power quality events is of great importance in power systems which should be done on line. For this purpose, different methods are presented which each has advantages and disadvantages. In this paper, recognition way is presented for power quality disturbances such as sag, swell, outage, surge and normal based on fuzzy systems. In this method, voltage...

In a microgrid, the distributed generators (DG) can power the user loads directly. As a result, power quality (PQ) events are more likely to affect the users. This paper proposes a Multiresolution Generalized S-transform (MGST) approach to improve the ability of analyzing and monitoring the power quality in a microgrid. Firstly, the time-frequency distribution characteristics of different types...

An Ad-hoc network has a Provision of Quality of Service (QoS) to support many applications like digital and multimedia applications. However, one of the challenging tasks in Ad-hoc Network (MANET &VANET) is Quality of Service (QoS) which is determined by numerous parameters such as bandwidth and delay constraints, varying channel conditions, power limitations, node mobility, dynamic topology, p...

BACKGROUND Extended-release niacin with laropiprant did not significantly reduce the risk of major vascular events and increased the risk of serious adverse events in Heart Protection Study 2-Treatment of HDL to Reduce the Incidence of Vascular Events (HPS2-THRIVE), but its net effects on health and healthcare costs are unknown. METHODS AND RESULTS 25 673 participants aged 50 to 80 years with...

With the development of critical loads, power quality problem has become particularly important and poor power quality will be cause many adverse effects and the cost of many deaths will follow. To improve power quality and protection of sensitive loads against grid disturbances have been used new equipment based on power electronics similar FACTs devices, they are Custom Power. One of the most...