摘要

As the dynamic voltage stability of large-scale receiving systems is a very important factor affecting the secure operation of power systems, it is necessary to provide sufficient dynamic voltage support for the receiving systems. The key factor in the dynamic var planning is the quantitative economic loss evaluation without-and-with dynamic voltage support. In this paper, the state transition course under large disturbances of multi-infeed receiving systems is analyzed. Then, based on the evaluation of state division/transition cost, a complete optimization model of dynamic var planning is presented to describe all kinds of voltage instability situations caused by both the interior faults of receiving systems and the infeed faults. The proposed model is finally applied to the optimization of the dynamic voltage support planning of the receiving networks in Guangdong in 2008 and 2010, and a comprehensive compensation scheme with security and economic efficiency is obtained.

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