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Tags: CONTINGENCY, SCREENING, RANKING, BASED, LINE, OUTAGES, VOLTAGE, STABILITY, ASSESSM, CONTINGENCY SCREENING AND RANKING BASED ON LINE OUTAGES FOR VOLTAGE STABILITY ASSESSMENT, CONTINGENCY SCREENING AND RANKING BASED ON LINE OUTAGES FOR VOLTAGE STABILITY ASSESSMENT ppt, CONTINGENCY SCREENING AND RANKING BASED ON LINE OUTAGES FOR VOLTAGE STABILITY ASSESSMENT pdf,
 
 
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CONTINGENCY SCREENING AND RANKING BASED ON LINE OUTAGES FOR VOLTAGE STABILITY ASSESSM
Post: #1


Authors:
C.Subramani
Arunbhaskar M
Jagadeesh kumar M
Subhransu Sekhar Dash
Abstract:
Voltage stability has recently become a challenging problem for many power systems. Voltage instability is one phenomenon that could happen in power system due to its stressed condition. The result would be the occurrence of voltage collapse which leads to total blackout to the whole system Investigation and online monitoring of power system stability have become vital factors to electric utility suppliers. Contingency screening and ranking (CS&R) is one of the important components of on-line voltage stability assessment. The objective of CS&R is to quickly and accurately select a short list of critical contingencies from a large list of potential contingencies and rank them according to their severity. Suitable preventive control actions can be implemented considering contingencies that are likely to affect the power system performance. An effective method for contingency ranking is proposed in this paper. This method calculates the voltage stability margin considering line outages. The basic methodology implied in this technique is the investigation of each line of the system through calculating line stability indices. The point at which VSI close to unity indicates the maximum possible connected load termed as maximum loadability at the point of bifurcation. This technique is tested on the IEEE system and results proved that the contingency ranking indicates the severity of the voltage stability condition in a power system due to line outage.

read full report
http://www.jee.ro/articles/WB1238873252W...40156a.pdf
Post: #2

The techniques employed stress stability analysis (VSA) and contingency analysis of line interruption (LOCA). From the VSA and LOCA, the most critical lines in a system during stress conditions are identified. A pre-developed voltage stability index was used as an indicator of the system voltage stability condition. The weak areas formed by the lines are identified as the most critical lines.

Voltage stability has recently become a challenging problem for many electrical systems. Voltage instability is a phenomenon that could occur in the power system because of its stressed condition. The result would be the emergence of voltage collapse leading to a total power outage to the entire system. Research and online monitoring of the stability of the power system have become vital factors for electricity providers. Contingency and classification scrutiny (CS & R) is one of the important components of online voltage stability assessment. The objective of CS & R is to quickly and accurately select a short list of critical contingencies from a large list of potential contingencies and classify them according to their severity. Appropriate preventive control actions can be implemented considering contingencies that may affect the performance of the power system. This article proposes an effective method for the classification of contingencies. This method calculates the voltage stability margin considering the line breaks. The basic methodology implicit in this technique is the investigation of each line of the system by calculating the stability indexes of the line. The point at which the VSI near the unit indicates the maximum connected load possible called the maximum load at the branch point. This technique is tested in the IEEE system and the results show that the contingency range indicates the severity of the voltage stability condition in a power system due to line interruption.
 

Marked Categories : seminar in voltage stability 2012, voltage stability contingency screening and ranking, ppt on contingency ranking, paper on contingency for voltage stability, idea screening ranking pdf, line contingency, estimation of maximum loadability contingency ranking in power system using fast stability index project report, line outage contingency ranking papers, subramani voltage stability, idea screening ranking, methodology for line outage ranking, contingency screning ranking, online ranking system, ppt on contingency ranking for voltage stability assessment,

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