Centrality measures for voltage instability analysis in power networks

Load Flow Analysis helps in error free operation of power system and also useful in forecasting the required equipment for expansion of the system. By forecasting the magnitude of the supply required along with effects caused by single or multiple defects in the system and calculating the magnitude of errors, it is very easy to compensate them using various techniques with minimum cost and effort. It means before installation the favorable sites and size of the infrastructure used are determined to maintain the power factor in the system. Here Power Flow Analysis is performed using Newton Raphson method. This method is used in solving power flow studies of various number of busesunder various conditions. In any network there will be undesired rise or drop or dissipation of voltage. Voltage instability decreases the efficiency of the system and also damages the equipment used. Hence voltage instability analysis is performed and magnitude of the instability is calculated and compensated using various techniques. Here we performed Load Flow Analysis on a 5bus system and Voltage Instability Analysis is also performed to the same with necessary outputs.[7]

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Voltage Instability Analysis for Electrical Power System Using Voltage Stabilty Margin and Modal Analysis

Indonesian Journal of Electrical Engineering and Computer Science ◽

10.11591/ijeecs.v3.i3.pp655-662 ◽

2016 ◽

Vol 3 (3) ◽

pp. 655 ◽

Cited By ~ 4

Author(s):

Ahmad Fateh Mohamad Nor ◽

Marizan Sulaiman ◽

Aida Fazliana Abdul Kadir ◽

Rosli Omar

Keyword(s):

Power System ◽

Modal Analysis ◽

Electric Power ◽

Reactive Power ◽

Research Work ◽

Load Flow ◽

Electric Power System ◽

Instability Analysis ◽

Real Power ◽

Voltage Instability

Voltage instability analysis in electric power system is one of the most important factors in order to maintain the equilibrium of the power system. A power system is said to be unstable if the system is not able to maintain the voltage at all buses in the system remain unchanged after the system is being subjected to a disturbance.The research work presented in this paper is about the analysis of voltage instability of electric power system by using voltage stability margin (VSM), load real power (P) margin, reactive power (Q) margin, reactive power-voltage (QV) and real power-voltage (PV) modal analysis. IEEE 30-bus system has been chosen as the power system. The load flow analysis are simulated by using Power World Simulator software version 16. Both QV and PV modal analysis were done by using MATLAB application software.

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