نتایج جستجو برای: power transmission reliability

تعداد نتایج: 835852  

2012
Robert W. Galvin

This paper presents an algorithm for the microgrid planning as an alternative to the co-optimization of generation and transmission expansion planning in electric power systems. The integration of microgrids in distribution systems will offer a decentralized control of local resources for satisfying the network reliability and the power quality required by local loads. The objective in this pap...

Journal: :international journal of smart electrical engineering 2015
sadegh etemad nasser mozayani

the use of renewable energy in power generation and sudden changes in load and fault in power transmission lines  may cause a voltage drop in the system and challenge the reliability of the system. one way to compensate the changing nature of renewable energies in the short term without the need to disconnect loads or turn on other plants, is the use of renewable energy storage. the use of ener...

سامی, تقی , شهرتاش, سید محمد , غلامی, احمد ,

The aging of insulating materials can be estimated by an electrical breakdown occurring in electrical components so that the relationship between lifetime, failure probability and reliability of electrical components may be studied using the life models in high voltage cables networks. In last decades with attention to higher features as electrical, thermal, mechanical characteristic, widely cr...

2012
G. Kabashi K. Kadriu A. Gashi S. Kabashi V. Komoni

This paper focuses on PSS/E modeling of wind farms of Doubly-fed Induction Generator (DFIG) type and their impact on issues of power system operation. Since Wind Turbine Generators (WTG) don’t have the same characteristics as synchronous generators, the appropriate modeling of wind farms is essential for transmission system operators to analyze the best options of transmission grid reinforcemen...

Journal: :international journal of smart electrical engineering 2014
abbas tabandeh amir abdollahi masoud rashidinejad

under the smart grid environments, demand response resources (drrs) as power system resources can effectively participate in and improve performance of electric systems. congestion management is one of the technical challenges in which drrs can play a significant role. previously, congestion management is applied without considering the power system uncertainties. therefore, a stochastic conges...

2004
Timothy D. Mount

Since deregulation of the electric utility industry began in the USA, there has been a substantial increase in the quantity of power transferred over long distances. Both thermal and voltage constraints on transmission have been experienced in regions that previously were rarely congested. One solution to this type of problem is to expand the capacity of transmission networks, but it is likely ...

2017
Hannele Holttinen Juha Kiviluoma Michael Milligan Bethany Frew Lennart Söder

This article is a summary of a review journal article describing some of the recent research into the capacity value of wind power. With the worldwide increase in wind power during the past several years, there is increasing interest and significance regarding its capacity value. This has a direct influence on the amount of other (non-wind) capacity that is needed in future power systems. Recen...

2011
C. J. Rosecrans

Exeoutive Summary Modern computation tools, such as the Optimal Power Flow (OPF) and Automatic Contingency Analysis (ACA), reduce significantly the time required to develop reliable and economical transmission plans. The traditional use of multiple power flows for planning large power systems with complex interconnections is very labor intensive and time consuming and limits the number of optio...

2012
A. Ehsani A. Karimizadeh H. Fallahi A. Jalali

In an electric power system, spinning reserve requirements can be determined by using deterministic and/or probabilistic measures. Although deterministic methods are usual in many systems, application of probabilistic methods becomes increasingly important in the new environment of the electric power utility industry. This is because of the increased uncertainty associated with competition. In ...

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