Cascading failure analysis for Indian power grid

V Rampurkar, P Pentayya… - … on Smart Grid, 2016 - ieeexplore.ieee.org
IEEE Transactions on Smart Grid, 2016ieeexplore.ieee.org
Major power grid blackouts in various parts of the world are characterized by voltage
collapse. This paper studies the blackout case in the Indian power grid due to voltage
collapse in the inter-regional corridor. First, the computer simulation models are tuned to
match responses from the phasor measurement units at various locations in the grid. The
inter-area mode with the frequency of 0.3 and 0.5 Hz with reduced damping were observed
and resulted due to switching actions that occurred during the disturbance. This paper …
Major power grid blackouts in various parts of the world are characterized by voltage collapse. This paper studies the blackout case in the Indian power grid due to voltage collapse in the inter-regional corridor. First, the computer simulation models are tuned to match responses from the phasor measurement units at various locations in the grid. The inter-area mode with the frequency of 0.3 and 0.5 Hz with reduced damping were observed and resulted due to switching actions that occurred during the disturbance. This paper simulates the complex power grid network for various loading conditions of Northern region using power system simulator for engineering. Further, the system variables are analyzed using Prony method to estimate the inter-area mode for different NR loading conditions. The eigen values associated with the 0.3 Hz mode depict the movement from open left half plane into open right half plane with a slight increase in the parameter indicating “hopf bifurcation.” This paper also discusses the maximum loading capacity for the inter-regional lines in-order avoid loss of small signal stability, and highlights the use of real time phasor measurement unit measurements in-order to estimate and track the oscillatory modes.
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