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In order to optimize the
knapsack problem further, this paper proposes an innovative model based on dynamic
expectation efficiency, and establishes a new optimization algorithm of 0-1
knapsack problem after analysis and research. Through analyzing the study of 30
groups of 0-1 knapsack problem from discrete coefficient of the data, we can
find that dynamic expectation model can solve the following two types of
knapsack problem. Compared to artificial glowworm swam algorithm, the
convergence speed of this algorithm is ten times as fast as that of artificial
glowworm swam algorithm, and the storage space of this algorithm is one quarter
that of artificial glowworm swam algorithm. To sum up, it can be widely used in
TCSC (Thyristor-Controlled Series Compensator)
has been used in modern power systems to increase power transfer and system stability.
Besides, due to its controllable feature, TCSC has been used to work as a solution
to sub-synchronous resonance (SSR) problems. However, it is not clear so far whether
TCSC’s inherent characteristic can avoid SSR and its effectiveness for SSR damping.
In this paper, an equivalent circuit of TCSC is used to better understand how TCSC
performs at sub-synchronous frequency ranges. Therefore, interactions of TCSC behaviors
and SSR components can be viewed individually. The effects of TCSC operation interfered
by sub-synchronous components are discussed. Results show that TCSC has the capability
to damp SSR, but this capability can be deteriorated if TCSC firing logic cannot
be effectively maintained.