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High-voltage dc (HVDC) transmission system stability has traditionally been studied using state-space models and eigenvalue analysis. The state-space approach requires design details of each component of the HVDC grid, which is usually not available, and does not support local control development at individual terminals. This paper presents an impedance-based approach to HVDC system stability analysis...
This paper addresses stability problems in power systems with loads that exhibit constant-power behavior. Instability may occur in such systems due to the negative incremental impedance of constant-power loads (CPLs). Existing approaches to stabilizing such systems require modification of the source and/or the load control characteristics, or isolating the CPL from the rest of the system by additional...
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