运用 VSC-HVDC 对多直流馈入系统进行分区能够提升受端系统的运行性能。不同分区方案对系统性能提升程度不同。为了寻找最优方案，运用灵敏度分析法对多直流馈入系统的特性进行了研究，得到了制定分区方案的两个基本原则。在此基础上提出了基于多馈入交互作用因子的直流分区方法，进而得到受端系统分区的最优方案。以广东电网2030水平年作为案例，运用该分区方法对广东电网进行分区，得到了最优分区方案。运用PSS/E进行仿真，验证了该最优分区方案的有效性。该方案对于实际工程中分区方案的制定具有指导意义。%The operating performance ofreceiving terminal power systemcan be improved by segmenting a multi-infeed HVDC system into a set of asynchronously operatedDC-interconnected sectors usingVSC-HVDC. Different DC-segmentation schemes have different impact on multi-infeed system. In order to figure out the optimal scheme, this paper firstly analyzes the characteristics of multi-infeed systems by sensitivity method and puts forward two principles of DC-segmentation. Secondly according to these principles, aDC-segmentation method based on multi-infeed interaction factoris presented and thenthe optimal scheme of receiving terminal power system partition is got. Finally, by applying the method, an actual large scale networkis studied and the optimalDC-segmentation schemeis obtained. The effectiveness of the optimal scheme and theDC-segmentation methodis verified through simulations on PSS/E. This paper has guiding significance for makingDC-segmentation schemes in real projects.
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