Research on HVDC transmission power scheduling on the background of asynchronous interconnection

For asynchronous power systems which are interconnected only by HVDC transmission lines, the tie-line power scheduling becomes challenging due to the discrete characteristics of HVDC transmission power profile. Based on previous work on modeling HVDC transmission power, a feasible framework of constraints that fully describes the power characteristics is proposed. Moreover, a power scheduling model of HVDC transmission (DCPS) considering power and energy balance conditions, as well as operation limits of power plants and AC lines is developed. The model is decoupled into two subproblems and a high-performance solution is proposed. Real data of China Southern Power Grid is utilized to demonstrate that the method is efficient and reliable, and thus can be a competent approach for dispatching center to work out a HVDC transmission plan.

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