Dual-end grid-forming control of flexible DC transmission system for weak grid interconnection

被引：0
|
作者：
Cai H. [1 ,2 ]
Guo Q. [1 ,2 ]
Yang R. [3 ]
Huang L. [1 ,2 ]
Shi G. [3 ]
Gu H. [4 ,5 ]
Su M. [4 ,5 ]
机构：
[1] State Key Laboratory of HVDC, Electric Power Research Institute of China Southern Power Grid, Guangzhou
[2] National Energy Power Grid Technology R&D Centre, Guangzhou
[3] School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai
[4] Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System, Guangzhou
[5] Key Laboratory for Power System Simulation of China Southern Power Grid, Guangzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2023年 / 43卷 / 09期
关键词：
fault ride-through; flexible DC transmission; frequency support; grid-forming control; weak grid;
D O I：
10.16081/j.epae.202308014
中图分类号：
学科分类号：
摘要：
In order to solve the problem that the flexible DC transmission system under the conventional grid-following control does not have the ability to support the grid frequency and the operation performance under weak grid conditions is poor，a dual-end grid-forming control of flexible DC transmission system is proposed. Based on the inherent dynamics of DC capacitance，the flexible DC transmission system is emu⁃ lated as a synchronous motor-shaft-synchronous generator system，so that it has good weak grid operation ability and active grid support ability. On this basis，the fault ride-through strategy of the flexible DC transmission system is designed. The simulative results of PSCAD／EMTDC show that the proposed control strategy has the weak grid adaptation capability，fast power flow regulation capability，active frequency support capability and grid fault ride-through capability. © 2023 Electric Power Automation Equipment Press. All rights reserved.
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页码：202 / 209
页数：7
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