Security-Constrained AC/DC Grid Optimal Power Flow Considering Asymmetrical HVDC Grid Operation using Sparse Tableau Formulation
Oscar Damanik, Giacomo Bastianel, Dirk Van Hertem, Hakan Ergun
本文介绍了针对HVDC电网的安全受限最佳功率流(SCOPF)模型,该模型可优化双极换流站的不对称运行,即正极和负转换器杆的不同电流注入,以最大限度地减少单转换器杆中断引起的后应急条件下的运营成本。 优化模型允许选择非对称运行的换流站数量。 结果表明,增加不对称站的数量会降低运营成本。 该分析还提供了对这些成本对不对称操作水平的敏感性的见解。 然而,增加的不对称操作导致更高的直流中性电压偏移,可以上升到不希望的水平。 对这些抵消施加限制反过来又会增加运营成本。 为了减轻这些影响,建议为应急后状态采用中性线切换(NLS)策略。
This paper presents a security-constrained optimal power flow (SCOPF) model for HVDC grids that optimizes the asymmetrical operation of bipolar converter stations, i.e., different current injections of the positive and negative converter poles, to minimize operational costs under post-contingency conditions caused by single converter pole outages. The optimization model allows the selection of the number of converter stations that operate asymmetrically. The results indicate that increasing the ...