نتایج جستجو برای: contingency approach

تعداد نتایج: 1298100  

Journal: :JAMDS 2001
Eric J. Beh

An alternative approach to classical correspondence analysis was developed in [3] and involves decomposing the matrix of Pearson contingencies of a contingency table using orthogonal polynomials rather than via singular value decomposition. It is especially useful in analysing contingency tables which are of an ordinal nature. This short paper demonstrates that the confidence circles of Lebart,...

2013
Ashwani Kumar

In this paper, an optimal power flow based approach has been applied for multi-transactions deregulated environment for ATC determination with SVC and STATCOM. The main contribution of the paper is (i) OPF based approach for evaluation of ATC with multi-transactions, (ii) ATC enhancement with FACTS devices viz. SVC and STATCOM for intact and line contingency cases, (iii) Impact of ZIP load on A...

2009
Kusum Verma K. R. Niazi

A unified approach to power system security assessment and contingency analysis suitable for on-line applications is proposed. The severity of the contingency is measured by two scalar Performance Indices (PIs): Voltage-reactive power performance index, PIVQ and line MVA performance index, PIMVA. In this paper, a two stage cascade neural network is developed: Stage I employs Multi-Layer Percept...

2008
Ian Sommerville Tim Storer Russell Lock

This paper presents a new approach to analysing and understanding civil emergency planning based on the notion of responsibility modelling combined with HAZOPS analysis of information requirements. Our goal is to represent complex contingency plans so that they can be more readily understood, so that inconsistencies can be highlighted and vulnerabilities discovered. In this paper, we outline th...

2012
Shobha Shankar

The importance of preventing the voltage collapse is gaining importance due to increase in dependency on the use of electricity. This has compelled the utilities to maintain high system reliability. The evaluation of a power systems ability to withstand dangerous contingencies and to survive to a normal or acceptable operating point is a prerequisite for security analysis. Line outage often cau...

2005
Valarie A. Zeithaml Carl P. Zeithaml

Introduction During the 1960s, management theory and research began to adopt a new orientation, one that embodied a remarkably simple concept and enabled significant advancements in the study of management and organisations. This orientation, now referred to as the contingency approach, emphasises the importance of situational influences on the management of organisations and questions the exis...

Journal: :International journal of advanced engineering and nano technology 2022

The effect of the line outage when rest system is stable called contingency study. on may be for single (N-1) or multiple lines (N-m) where N total number and m out service. study essential process in planning, operating control power systems. main thrust studies carried centers to determine steady state effects outages. Large systems require analysis all credible contingence within a very shor...

Journal: :Journal of the American Statistical Association 1976

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