Hybrid Method for Optimal Placement of DC-PFCs to Enhance Static Security of VSC-HVdc Grids

This article proposes a hybrid method to find the optimal place of dc power flow controllers (DC-PFC)s in HVdc grids. This hybrid method consists of max flow-min cut theory with Ford-Fulkerson augmenting paths and combining sensitivity analysis to find the most important HVdc lines and the best placement. In this article, series DC-PFC is modeled and get placed. A significant advantage of this method is, reducing the computational burden of calculations by finding the most important and susceptible HVdc lines to get overloaded without focusing on other unnecessary HVdc lines. The static security of the power system strongly depends on the placement of DC-PFCs, which has become an important issue because of rapid-developing of HVdc grids. Static security studies have been done on an eight-terminal HVdc grid incorporating double scenarios.

Automated summary

This article introduces a hybrid method to determine the optimal placement of DC power flow controllers (DC-PFCs) in HVdc grids, utilizing max flow-min cut theory and sensitivity analysis to identify important HVdc lines. By focusing on key lines, the method reduces computational burden and considers static security as a crucial factor in DC-PFC placement in rapidly developing HVdc grids. Static security studies were conducted on an eight-terminal HVdc grid with dual scenarios to assess the effectiveness of the proposed method.