基于动态相量法的改进多端模块化多电平换流器HVDC小干扰稳定模型

doi:10.19595/j.cnki.1000-6753.tces.L70740

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Abstract 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.

Key words： Multi-terminal modular multilevel converter-HVDC dynamic phasors method advanced small-signal stability model quasi-steady state

Published: 16 January 2018

PACS:

TM46

Corresponding Authors: 胡畔男,1989年生,博士研究生,研究方向为电力系统稳定分析及控制、电能质量分析和新能源接入规划。E-mail: 314784284@qq.com

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	Hu Pan
	Chen Hongkun
	Chen Mengxin
	Zhu Xiaohang
	Meng Xinyu

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Hu Pan,Chen Hongkun,Chen Mengxin等. Advanced Small-Signal Stability Model for Multi-Terminal Modular Multilevel Converter-HVDC Systems Based on Dynamic Phasors[J]. Transactions of China Electrotechnical Society, 2017, 32(24): 193-204.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L70740 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I24/193

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