Key Technologies and Challenges of Grid-forming Control for Flexible DC Transmission System

被引：0
|
作者：
Ma X. [1 ]
Lu Y. [1 ]
Tian J. [1 ]
Wang N. [1 ]
机构：
[1] NR Electric Co., Ltd., Nanjing
来源：
Dianli Xitong Zidonghua/Automation of Electric Power Systems | 2023年 / 47卷 / 03期
关键词：
broadband resonance stability; flexible DC transmission; grid-forming control; synchronous motor; weak system;
D O I：
10.7500/AEPS20220616006
中图分类号：
学科分类号：
摘要：
With large-scale asynchronous power supply replacing some synchronous motors in the traditional power grids, the power supply structure and grid skeleton are changing, and the power system will face the problems of the weak system, low inertia and weak voltage support. The flexible DC transmission system with grid-forming control can simulate the operation characteristics of synchronous motors and play the role of power grid support while realizing power transmission. This paper introduces the application scenario and technical framework of grid-forming control for flexible DC transmission systems and analyzes the key technologies of grid-forming control applied to the flexible DC transmission system from three perspectives of the grid-connected performance evaluation, broadband resonance stability and transient stability. This paper summarizes and analyzes the challenges in the three aspects of control parameter design, over-current capacity of primary equipment and energy sources as well as several technical directions. © 2023 Automation of Electric Power Systems Press. All rights reserved.
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页码：1 / 11
页数：10
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