Droop Frequency Limit Control and Its Parameter Optimization in VSC-HVDC Interconnected Power Grids

被引：2
作者：
Jiang, Han [1 ]
Zhou, Yichen [2 ]
Gao, Yi [1 ]
Gao, Shilin [2 ]
机构：
[1] Global Energy Interconnect Dev & Cooperat Org, Beijing 100031, Peoples R China
[2] Sichuan Univ, Coll Elect Engn, Chengdu 610065, Peoples R China
来源：
ENERGIES | 2024年 / 17卷 / 15期
基金：
中国国家自然科学基金;
关键词：
ultra-low-frequency oscillations; low frequency; regional interconnected system; VSC-HVDC; droop control; frequency limit controller; SYSTEM;
D O I：
10.3390/en17153851
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
With the gradual emergence of trends such as the asynchronous interconnection of power grids and the increasing penetration of renewable energy, the issues of ultra-low-frequency oscillations and low-frequency stability in power grids have become more prominent, posing serious challenges to the safety and stability of systems. The voltage-source converter-based HVDC (VSC-HVDC) interconnection is an effective solution to the frequency stability problems faced by regional power grids. VSC-HVDC can participate in system frequency stability control through a frequency limit controller (FLC). This paper first analyses the basic principles of how VSC-HVDC participates in system frequency stability control. Then, in response to the frequency stability control requirements of the sending and receiving power systems, a droop FLC strategy is designed. Furthermore, a multi-objective optimization method for the parameters of the droop FLC is proposed. Finally, a large-scale electromagnetic transient simulation model of the VSC-HVDC interconnected power system is constructed to verify the effectiveness of the proposed droop FLC method.
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页数：18
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