A direct method for assessment of overall voltage condition of power system

Abstract One of the reason of stressed power system being driven to voltage instability is the inverse relation between voltage and change in transmission line series loss. This work develops a technique for determining voltage stability of the system employing transmission line loss of a system. The equivalent two-bus model of network is used for assessing the voltage condition of the network. The main feature of technique is to avoid monitoring of individual buses or branches to assess the voltage stability. The objective of the work is to consider the total generation and total demand data available in the control center to predict the overall voltage stability of the system and thus it is suitable for real-time monitoring. The proposed voltage stability monitoring approach has been validated using IEEE 30 bus and Indian Utility 62 bus test system for different practical conditions.

[1]  Ashwani Kumar,et al.  Voltage stability assessment using Phasor Measurement technology , 2014, 2014 IEEE 6th India International Conference on Power Electronics (IICPE).

[2]  P. R. Bijwe,et al.  A new index for voltage stability monitoring and enhancement , 1998 .

[3]  H. Glavitsch,et al.  Estimating the Voltage Stability of a Power System , 1986, IEEE Transactions on Power Delivery.

[4]  R.J. Thomas,et al.  On voltage collapse in electric power systems , 1989, Conference Papers Power Industry Computer Application Conference.

[5]  Avinash Kumar Sinha,et al.  A comparative study of voltage stability indices in a power system , 2000 .

[6]  W. Smolinski.  Equivalent Circuit Analysis of Power System Reactive Power and Voltage Control Problems , 1981, IEEE Transactions on Power Apparatus and Systems.

[7]  J. M. Tesseron,et al.  An indicator of the risk of voltage profile instability for real-time control applications , 1990 .

[8]  Sandro Corsi.  Wide area voltage protection , 2010 .

[9]  Wilsun Xu,et al.  Voltage stability monitoring based on the concept of coupled single-port circuit , 2012, 2012 IEEE Power and Energy Society General Meeting.

[10]  Abhijit Chakrabarti,et al.  Development of a global voltage security indicator (VSI) and role of SVC on it in longitudinal power supply (LPS) system , 2004 .

[11]  M. S. Kandil,et al.  Linear indicator for voltage collapse in power systems , 1997 .

[12]  Sunita Halder nee Dey,et al.  An innovative technique to evaluate network equivalent for voltage stability assessment in a widespread sub-grid system , 2011 .

[13]  F. Gubina,et al.  A new concept of voltage-collapse protection based on local phasors , 2004, IEEE Transactions on Power Delivery.

[14]  Mohammad-Taghi Vakil-Baghmisheh,et al.  Dynamic voltage stability assessment of power transmission systems using neural networks , 2008 .

[15]  Abdul Azeem,et al.  Power System Voltage Stability Assessment through Artificial Neural Network , 2012 .

[16]  Subrata Paul,et al.  Power System Voltage Stability Assessment Using Network Equivalents-A Review , 2010 .

[17]  Gerard Olivar,et al.  A Simplified Voltage Stability Index (SVSI) , 2014 .

[18]  D. Hill,et al.  Voltage stability indices for stressed power systems , 1993 .

[19]  F. Gubina,et al.  Local voltage-stability index using tellegen's Theorem , 2007, 2007 IEEE Power Engineering Society General Meeting.