2 papers
math.DS2026
Voltage Stability Kernel: A Cofactor Theory of Voltage Stability in Lossy Power Systems
Takayuki Ishizaki, Jigen Koizumi, Hiroo Yashiba +1
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…
eess.SY2025
Small-Signal Stability Condition of Inverter-Integrated Power Systems: Closed-Form Expression by Stationary Power Flow Variables
Taku Nishino, Yoshiyuki Onishi, Takayuki Ishizaki
This paper shows that a necessary and sufficient condition for the small-signal stability of an inverter-integrated power system can be expressed in terms of semidefinite matrix in…