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A comparison of voltage stability indices
2014 IEEE 8th International Power Engineering and Optimization Conference (PEOCO2014), 2014The stressful condition of power system and high transmission losses leads to voltage security and reliability problems of system operation. If the voltage stability is not assessed and the problems occurred are not mitigated properly, cascading events may occur and this may lead to voltage collapse or blackout events.
N. A. M. Ismail +3 more
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Line indices for voltage stability assessment
2009 IEEE Bucharest PowerTech, 2009Voltage stability has become one of the most important issues in electrical power systems. The power system ability to maintain acceptable bus voltage is a very important characteristic of a network. This paper analyzes the performance of line stability indices.
C. Reis, F.P. Maciel Barbosa
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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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Voltage stability indices for stressed power systems
IEEE Transactions on Power Systems, 1993The use of static voltage stability indices based on a singular value decomposition of the power flow Jacobian matrix and matrices derived from the Jacobian matrix is discussed. It is shown that such indices, together with the singular vectors, contain substantial and important information about the proximity to voltage instability and also about ...
Andersson, G, Hill, DJ, Loef, PA
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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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