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Evaluation of some indices for voltage stability assessment
2009 IEEE Bucharest PowerTech, 2009The liberalization of the electricity markets causes power systems to work closer and closer to their limits. The online assessment of system security becomes a topic of paramount importance in control centers. In this context fast indices to quickly assess system security are fundamental in an on-line DSA session.
S. GRILLO +3 more
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A Review of Voltage Stability Assessment Techniques with an Improved Voltage Stability Indicator
International Journal of Emerging Electric Power Systems, 2015Abstract A blackout can take place in entire power system or a part of the system due to extreme voltage instability (voltage collapse) that can appear abruptly. Instability prediction and continuous monitoring of the power system performance is, therefore, known exigent.
Mir Sayed Shah Danish +2 more
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Properties of indices for voltage stability assessment
2013 8TH INTERNATIONAL SYMPOSIUM ON ADVANCED TOPICS IN ELECTRICAL ENGINEERING (ATEE), 2013The paper deals with evaluation of a power system from the view-point of voltage stability. It is concerned with the indices which are proposed as voltage collapse proximity indicators. In the existing papers, many such indices can be found. In the paper, the so-called line stability indices, defined using the static approach to the study of voltage ...
Tomasz Okon, Kazimierz Wilkosz
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Line stability indices for voltage collapse prediction
2009 International Conference on Power Engineering, Energy and Electrical Drives, 2009Voltage collapse is a problem that occurs in heavily stressed systems. This paper compares the effectiveness of line stability indices in providing information about the proximity of voltage instability of a electrical power system. Line voltage stability indices can provide an accurate information of the stability condition of the lines of the system ...
Claudia Reis +2 more
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Accuracy analysis of fixed voltage setpoint indices for voltage stability
2010 International Conference on Power System Technology, 2010There are many voltage stability indices for voltage security assessment and calculating stable margins from operating points to voltage instability at each load bus. Among them, one type of indices based on fixed voltage setpoint is applied in practice. Previous research has proved inaccuracy of these indices with the P-V curve method. This paper aims
null Sun Huadong +2 more
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2018 IEEE PES/IAS PowerAfrica, 2018
This paper presents a method for performing voltage stability analysis and ranking of network buses using user-modified voltage stability indices (MVSI). In the study, Ethiopian 230 KV power system is modeled and Newton Raphson power flow analysis is carried out using power system stability analysis toolbox (PSAT).
Tella, Teshome Goa +2 more
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This paper presents a method for performing voltage stability analysis and ranking of network buses using user-modified voltage stability indices (MVSI). In the study, Ethiopian 230 KV power system is modeled and Newton Raphson power flow analysis is carried out using power system stability analysis toolbox (PSAT).
Tella, Teshome Goa +2 more
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2015 5th Nirma University International Conference on Engineering (NUiCONE), 2015
Voltage Stability and Voltage Security are considered as important concerns in power system planning and operation. To provide reliable, secure and stable electrical power to the customers, is the main task of power system engineer. To meet these requirements simultaneously, the power system is to be operated closer to its stability limits which cause ...
P. P. Bedekar, A. S. Telang
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Voltage Stability and Voltage Security are considered as important concerns in power system planning and operation. To provide reliable, secure and stable electrical power to the customers, is the main task of power system engineer. To meet these requirements simultaneously, the power system is to be operated closer to its stability limits which cause ...
P. P. Bedekar, A. S. Telang
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Neural-network representation of Voltage Stability Indices at the voltage collapse
2011 North American Power Symposium, 2011Representing system security in power flow based system models by the scalar magnitude of a Voltage Stability Index (VSI) may be a very difficult task, which may even render the applicability of such models impractical. VSIs at voltage collapse points are difficult to predict when reactive power generation limits are taken into account in system ...
Guilherme G. Lage +2 more
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Analysis and Comparison of Line Voltage Stability Indices
2018 6th International Renewable and Sustainable Energy Conference (IRSEC), 2018Voltage stability indices are one of the powerful means of power system monitoring. With the existence of several ones in literature, some of them are less accurate and insensitive to some kinds of disturbances and especially when the power system operates near to its load ability limit.
Aziz Oukennou, Abdelhalim Sandali
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A comparison of transmission line voltage stability indices
2016 2nd International Conference on Advances in Electrical, Electronics, Information, Communication and Bio-Informatics (AEEICB), 2016The modern power system networks are being executed under stressed conditions due to continuous increase in power demand. The voltage collapse can appear quite precipitously. So we need uninterrupted control of the system state. This paper compares the performance of several indices which furnish important information about the proximity of the system ...
P. Rajalakshmi, M. Rathinakumar
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