Adaptive Active Inertia Control Strategy of MMC-HVDC Systems for Flexible Frequency Support

被引：2

作者：

Lv, Xiaojv ^{[1
]}

Wang, Jialong ^{[1
]}

Zhang, Zhichao ^{[2
]}

Liu, Ziwen ^{[1
]}

Li, Zhaoxia ^{[3
]}

机构：

[1] Hohai Univ, Coll Energy & Elect Engn, Nanjing 211100, Peoples R China

[2] Univ Birmingham, Coll Engn & Phys Sci, Birmingham B15 2TT, England

[3] Tibet Agr & Anim Husb Univ, Coll Elect Engn, Linzhi 860000, Peoples R China

来源：

ELECTRONICS | 2023年 / 12卷 / 20期

关键词：

MMC-HVDC; adaptive control; active inertia support; sigmoid function; frequency response;

D O I：

10.3390/electronics12204288

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

The Modular Multilevel Converter High Voltage Direct Current Transmission (MMC-HVDC) technology is considered to be the most feasible choice for high-voltage and high-power transmission systems, and its flexibility and high controllability provide a new solution for renewable energy grid integration. The MMC topology contains a large number of capacitors, which enables it to provide a certain active inertia support for the connected AC system. Different from a synchronous machine, the active inertia control of an MMC can flexibly adjust a system's inertia-supporting power by changing the control parameters. By introducing a variation of the Sigmoid function with amplitude-limiting capability, this paper proposes an adaptive active inertia control strategy for the MMC-HVDC system. The proposed scheme adjusts the inertia constant adaptively according to the frequency change rate of the AC system, which can better respond to the frequency recovery performance. Finally, the MMC-HVDC simulation model is established in PSCAD/EMTDC to verify the effectiveness of the proposed control strategy.

引用

页数：18

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