Systems and methods for predicting power system instability

Abstract

Certain embodiments of the invention may include systems and methods for predicting power system instability. According to an example embodiment of the invention, a method is provided for predicting voltage collapse or instability in a power system. The method can include sampling measurement values associated with one or more busses, wherein the measurement values include current on respective lines associated with a bus; and voltage associated with the bus. The method can further include determining a change in reactive power loss (ΔQloss) on input lines feeding the bus; determining a change in real power flow (ΔPflow) on input or output lines associated with the bus; and determining a voltage stability index (VSI) at the bus based at least in part on the determined ΔQloss and the ΔPflow.

Dependencies are inferred from the claim text.