南方电网技术2025，Vol.19Issue(1)：1-11,11.DOI:10.13648/j.cnki.issn1674-0629.2025.01.001
考虑直流线路参数频变效应的HVDC系统小信号建模
Small Signal Modeling of HVDC System Considering the Frequency Dependent Effect of DC Line Parameters
摘要
Abstract
High voltage direct current transmission plays a crucial role in the coordinated allocation of power resources in China,and ensuring its stable operation is of great significance.At present,the research hotspot on small disturbance stability of high voltage direct current systems mainly focuses on the modeling of inverters,while the modeling of transmission lines only uses centralized parameters for equivalence.However,centralized parameter models cannot accurately reflect the harmonic transmission characteristics of transmission lines in the high-frequency range.Firstly a distributed parameter model for overhead lines that consid-ers frequency variation characteristics is proposed,which is simplified by eliminating ground wire effects and inter pole coupling ef-fects.Then,the model is applied to the AC side admittance model of high-voltage DC systems.Finally,the correctness and effective-ness of the proposed model is verified on the PSCAD/EMTDC simulation experimental platform.关键词
输电线路模型/频率特性/高压直流/分布参数Key words
transmission line model/frequency characteristic/high voltage direct current/distributed parameters分类
动力与电气工程引用本文复制引用
樊玮,周盛宇,陈德扬,秦颖婕,刘宇,汪娟娟..考虑直流线路参数频变效应的HVDC系统小信号建模[J].南方电网技术,2025,19(1):1-11,11.基金项目
国家自然科学基金资助项目(52277102) （52277102）
中国南方电网有限责任公司科技项目资助(036000KK52220004(GDKJXM20220147)).Supported by the National Natural Science Foundation of China(52277102) （036000KK52220004(GDKJXM20220147）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(036000KK52220004(GDK JXM20220147)). （036000KK52220004(GDK JXM20220147）
