arxivmath.DSeess.SY2026-07-03
Voltage Stability Kernel: A Cofactor Theory of Voltage Stability in Lossy Power Systems
Takayuki Ishizaki, Jigen Koizumi, Hiroo Yashiba, Boqiang Sun
This paper introduces the voltage stability kernel (VSK), a cofactor-based bus-wise representation of voltage stability in lossy power systems. The VSK is defined as the vector of principal cofactors of the voltage stability Laplacian (VSL), a reduced Jacobian that retains voltag…