含混合多端直流的电力系统静态电压稳定域构建

针对含混合多端直流输电(Hybrid-MTDC)的交直流系统静态电压稳定域(SVSR)构建难题，提出一种含Hybrid-MTDC的交直流系统静态电压稳定域边界(SVSRB)快速搜索的预测-校正方法。计及多类型换流站的控制策略切换特性和站间控制策略协同，构建含Hybrid-MTDC的交直流系统连续潮流模型，搜索SVSRB上的首个临界点。借助获取的首个临界点信息，根据SVSRB拓扑特性，通过所提预测-校正模型实现含Hybrid-MTDC的交直流系统SVSRB上相邻临界点的快速、准确获取，进而构建出含Hybrid-MTDC的交直流系统SVSR。通过含Hybrid-MTDC的IEEE 5节点和IEEE 118节点测试系统对所提方法进行分析验证，结果表明所提方法可实现含Hybrid-MTDC的交直流系统SVSR高效、准确构建。

Static voltage stability region construction of power system with Hybrid-MTDC

Aiming at the challenge of static voltage stability region(SVSR) construction of AC/DC system with hybrid multi-terminal high voltage direct current(Hybrid-MTDC),a predictor-corrector method to investigate the SVSR boundary(SVSRB) of AC/DC system with Hybrid-MTDC is presented. Considering the control strategy switching characteristics of the multi-type converter stations and the control strategy cooperation among converter stations, a continuation power flow(CPF) model for the AC/DC system with Hybrid-MTDC is constructed to find the first critical point on the SVSRB. By using the obtained first critical point information, according to the topological characteristics of SVSRB, the proposed predictor-corrector model is used to obtain the adjacent critical point in SVSRB of AC/DC system with Hybrid-MTDC rapidly and correctly, and then the SVSR of AC/DC system with Hybrid-MTDC is formed. The proposed method is analyzed and verified in IEEE 5-bus and IEEE 118-bus test systems with Hybrid-MTDC. The result shows that the proposed method can achieve the SVSR construction in AC/DC system with Hybrid-MTDC effectively and correctly.