标题：A method for multi-VSC interaction analysis based on current excitation and voltage response in current control timescale

作者：Sheng Li; Meiqing Zhang; Xiaoming Yuan

摘要：High frequency oscillations caused by the voltage source converters (VSCs) have been increasingly emerged in the VSC-dominated power systems. However, most studies concentrate on the single VSC scenarios and lack enough cognitions of the interactions among multi-VSC. Hence, this paper will propose a method to study the interactions among multi-VSC. First, VSC will be uniformly modeled as the current excitation and the voltage response. Then, the interactions of the other VSCs on the studied VSC can be depicted and summarized as the current variations of the studied VSC induced by the voltage perturbations of the other VSCs. By converting the interactions of the other VSCs into the studied VSC, the multi-VSC system can be equivalent into the single VSC system. Hence, by studying the self-effect paths and the interacting-effect paths in the equivalent single VSC system, it is possible to study the interactions of the other VSCs on the stability of the studied VSC. Eventually, this method is illustrated in a two-VSC system and time domain simulations validate the correctness of the analyses.

发表于：8th Renewable Power Generation Conference (RPG 2019)