Multi-domain Simulation Method for Large-scale AC/DC Systems Based on Time-Frequency Coordination Transform

被引：0

作者：

Song Z. ^{[1
]}

Shu D. ^{[1
]}

Yan Z. ^{[1
]}

Luo X. ^{[2
]}

机构：

[1] Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education (Shanghai Jiao Tong University), Shanghai

[2] State Grid Shanghai Municipal Electric Power Company, Shanghai

来源：

Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2020年 / 44卷 / 05期

关键词：

Electromagnetic transient; Flexible DC system; Interface transmission line model; Modular multilevel converter (MMC); Time-frequency coordination transform;

D O I：

10.7500/AEPS20190805005

中图分类号：

学科分类号：

摘要：

In order to accurately simulate the dynamics of large-scale AC/DC systems and interactions between individual components, a simulation method with high precision and efficiency is highly required. A multi-domain simulation method for large-scale AC/DC systems based on time-frequency coordination transform is proposed. In this method, DC systems are partitioned into the phasor-shift sub-systems, which are presented by their phasor-shift models based on the time-frequency coordination transform. This method can adopt large time-step to improve the efficiency while the accuracy is guaranteed. Further, a multi-domain interface model between phasor-shift sub-systems and electromagnetic sub-systems, which is also called interface transmission line model, is optimally designed. The interface model can reflect both instantaneous and wide-band phasor waveforms simultaneously. Finally, an actual AC/DC system integrating four-terminal flexible DC system in China has validated the effectiveness of the proposed method. © 2020 Automation of Electric Power Systems Press.

引用

页码：130 / 137

页数：7

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