Analysis and Optimization of Power Fluctuation Caused by Abnormal Position of Line Connection Switch in Multi-terminal DC System

Kunliulong (Kunbei Liuzhou Longmen) hybrid multi terminal DC project, as the largest DC project completed and put into operation in China Southern Power Grid (CSG), has unique characteristics such as single station online switching on/off, DC fault self clearing, and its operation reliability has at...

Full description

Saved in:
Bibliographic Details
Published in2023 6th Asia Conference on Energy and Electrical Engineering (ACEEE) pp. 61 - 65
Main Authors Gaoming, Xu, Yihui, Luo, Yang, Song, Wanli, Shi, Huifan, Xie, Yan, Zhao, Wenpeng, Zhang, Cong, Huang
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.07.2023
Subjects
Abnormal power fluctuation
Action sequence
Electrical engineering
Fluctuations
multi-terminal DC
Optimization methods
Power grids
Regulation
Switch position signal
Switches
Systems operation
Online AccessGet full text

Cover

More Information
Summary:Kunliulong (Kunbei Liuzhou Longmen) hybrid multi terminal DC project, as the largest DC project completed and put into operation in China Southern Power Grid (CSG), has unique characteristics such as single station online switching on/off, DC fault self clearing, and its operation reliability has attracted widespread attention. This paper analyzes an abnormal fluctuation event of system power caused by the wrong position signal of line connection disconnector, sorts out the action sequence of multi terminal DC power regulation for asynchronous networking, studies the feasibility of adding fault monitoring and error prevention criteria for disconnector position nodes, and proposes corresponding optimization methods. Finally, the effectiveness of the proposed methods is verified by engineering debugging in this paper. The system operation reliability is improved because of that, which provides a reference for other similar projects.
DOI:10.1109/ACEEE58657.2023.10239652