نتایج جستجو برای: load shedding

تعداد نتایج: 161450  

Journal: :Appl. Soft Comput. 2007
Daya Ram Laxmi Srivastava Manjaree Pandit Jaydev Sharma

In recent years, voltage limit violation and power system load-generation imbalance, i.e., line loading limit violation have been responsible for several incidents of major network collapses leading to partial or even complete blackouts. Alleviation of line overloads is the suitable corrective action in this regard. The control action strategies to limit the line loading to the security limits ...

2014
Renuga VERAYIAH Azah MOHAMED Hussain SHAREEF ZAINAL ABIDIN

A voltage collapse event is complex and localized in nature, but its effect is extensive. A vital effect of voltage collapse is total system collapse or blackouts, which will result in a significant loss to utility companies. Online monitoring of power system stability has thus become an important factor for electric power utilities. The final resort prevent the occurrence of a voltage collapse...

2017
KASHIF JANJUA BILAL KHAN

This paper presents an overview of the architecture for smart Nano grids, Integration of various diversified distributed generation technologies in Nano grids at small community level and different policies governing its implementation. The paper also reviews the current energy scenario of Pakistan with emphasis on the need of setting up small scale Nano grids with integration of V2G technology...

2009
Anja Klein Gregor Hackenbroich Wolfgang Lehner

As most data stream sources exhibit bursty data rates, data stream management systems must recurrently cope with load spikes that exceed the average workload to a considerable degree. To guarantee low-latency processing results, load has to be shed from the stream, when data rates overstress system resources. There exist numerous load shedding strategies to delete excess data. However, the cons...

Journal: :Journal of medical virology 2010
Sasirekha Ramani Premi Sankaran Rajesh Arumugam Rajiv Sarkar Indrani Banerjee Ipsita Mohanty Atanu Kumar Jana Kurien Anil Kuruvilla Gagandeep Kang

A single rotavirus strain causing asymptomatic infections as well as severe gastrointestinal disease has been described in the neonatal nurseries of the Christian Medical College, Vellore. In this study, quantitative real-time RT-PCR was used to determine the association of viral load with the presence of gastrointestinal symptoms in neonates. Viral load was estimated in terms of the crossing p...

2013
Tullio Facchinetti

In the field of power systems there is an active research on methods to limit the peak load of power demand. Recently, a new approach to the automatic management of electric loads has been proposed, which is based on scheduling techniques derived from real-time computing systems. The research on real-time scheduling encompasses several aspects, including scheduling algorithms and analysis techn...

2006
Nesime Tatbul Yanif Ahmad Ugur Çetintemel Jeong-Hyon Hwang Ying Xing Stanley B. Zdonik

Borealis is a distributed stream processing engine that has been developed at Brandeis University, Brown University, and MIT. It extends the first generation of data stream processing systems with advanced capabilities such as distributed operation, scalability with timevarying load, high availability against failures, and dynamic data and query modifications. In this paper, we focus on aspects...

Journal: :journal of operation and automation in power engineering 2007
k. afshar a. shokri gazafroudi

wind power generation is variable and uncertain. in the power systems with high penetration of wind power, determination of equivalent operating reserve is the main concern of systems operator. in this paper, a model is proposed to determine operating reserves in simultaneous market clearing of energy and reserve by stochastic programming based on scenarios generated via monte carlo simulation ...

2016
Leonardo Trigueiro dos Santos Manuela Sechilariu

The microgrid system is an answer to the necessity of increasing renewable energy penetration and also works as a bridge for the future smart grid. Considering the microgrid system applied to commercial building equipped with photovoltaic sources, the usage of a DC microgrid architecture can improve the efficiency of the system, while ensuring robustness and reducing the overall energy cost. Gi...

Islanding operation is one of the main features of a MicroGrid (MG), which is realized regarding the presence of distributed energy resources (DERs). However, in order to deal with the control challenges, which an MG faces during island operation, particularly when the transition is associated with certain excessive load, an efficient control strategy is required. This paper introduces a Centra...

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