Advanced Small-Signal Stability Model for Multi-Terminal Modular Multilevel Converter-HVDC Systems Based on Dynamic Phasors

被引：0
|
作者：
Hu P. [1 ]
Chen H. [1 ]
Chen M. [1 ]
Zhu X. [1 ]
Meng X. [1 ]
机构：
[1] School of Electrical Engineering, Wuhan University, Wuhan
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2017年 / 32卷 / 24期
关键词：
Advanced small-signal stability model; Dynamic phasors method; Multi-terminal modular multilevel converter-HVDC; Quasi-steady state;
D O I：
10.19595/j.cnki.1000-6753.tces.L70740
中图分类号：
学科分类号：
摘要：
This paper proposes an advanced small-signal stability model for multi-terminal MMC-HVDC systems based on dynamic phasors and state-space. As ignoring the dynamic process of converter, the traditional models based on quasi-steady state assumption are difficult to reflect the rapid dynamic process of electronic devices. In accordance with active and passive network control strategies for multi-terminal MMC-HVDC, the small-signal stability models based on dynamic phasors are conducted, and related theoretical derivation is carried out. From the simulation analysis of a typical multi-terminal MMC-HVDC network with offshore wind generation and conventional power sources, the comparisons among the advanced small-signal model, electromagnetic-transient model and traditional small-signal state-space model are performed. It is shown that, the advanced small-signal state-space model can successfully follow the electromechanical transient response with small errors, predict the damped oscillations, and reduce the whole simulation time. Consequently, the validity and applicability of the proposed model are well confirmed. © 2017, The editorial office of Transaction of China Electrotechnical Society. All right reserved.
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页码：193 / 204
页数：11
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