Abstract
Reference network model determines the optimal transmission line capacities by minimizing the generation cost and investment cost of transmission lines, in which line flow constraints under contingency events should be respected. However, the number of these constraints is tremendous and this makes the impediment when reference network model is applied for real large power systems. In this paper a new method is proposed to solve reference network efficiently based on line outage distribution factor (LODF). Firstly, the power flow without contingency events is calculated. Next, the line flow under contingency events is calculated based on LODF. For each contingency event, the line flow constraint which possesses the most severe overload level is added into the reference network model. The optimization procedure proceeds until all the overload flows are eliminated. The efficiency and validity of the proposed method is verified by IEEE test systems and a real large power system.
Published Version
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