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Complementary limit describes a change in system structure when two variables and constants in the system model exchange their status. Complementary limits have been used in the power system literature in the past for modeling the Q limit problem in power-flow equations. This paper presents a general theorem about static bifurications induced by complementary limits. A direct application of the theorem...
A two level cellular structure in both the parameter space and the state space is identified. This allows a new approach for the security monitoring of the large power system from a different perspective through the concept of a feasibility region. The boundary of the feasibility region is composed of surface sections (defined by algebraic equations) of only three types. So the boundary and its distance...
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