Abstract
This paper presents a power injection model (PIM) of STATCOM for power flow and voltage stability analysis. In this model, PWM control and phase control strategies of STATCOM are handled, and the operating limit is enforced. The NR formulation has the same structure before and after the limit enforcement, and the Jacobian matrix adds only one dimension. This model can also take into account the steady-state losses of STATCOM if desired, and hence more accurately predict the active and reactive power injections. The singular value decomposition (SVD) based method is then extended to study the effect of STATCOM on power systems voltage stability. IEEE 300-bus and 30-bus systems are used to verify the effectiveness and performance of this model and the effect of load changes at all the buses simultaneously on voltage stability has also been studied with the STATCOM.
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