EN考虑控制链路延时的双端LCC-HVDC系统改进谐波状态空间建模
Improved Harmonic State Space Modeling for Dual-terminal LCC-HVDC Systems Considering Time Delay
- 现代电力 2026年43卷第1期 页码：10-19
- 作者机构：
1. 四川大学 电气工程学院,四川省,成都市,610065
2. 中国南方电网有限责任公司超高压输电公司,广东省,广州市,510663
- 作者简介：
[ "王顺亮(1987)，男，博士，副教授，研究方向为高压直流输电、新能源并网等，E-mail: slw_scu@163.com" ]
[ "刘海军(1999)，男，硕士研究生，研究方向为高压直流输电建模与分析，E-mail：hjliu@stu.scu.edu.cn" ]
[ "马俊鹏(1990)，男，博士，副教授，通信作者，研究方向为高压直流输电建模与分析、新能源并网变换器建模及控制等， E-mail：jma@scu.edu.cn" ]
[ "谢洋(1997)，女，硕士研究生，研究方向为高压直流输电建模与分析，E-mail：xyanghyl@163.com" ]
[ "李永琪(1998)，女，硕士研究生，研究方向为高压直流输电建模与分析，E-mail：lyq_scu@163.com" ]
[ "赵远(1997)，男，硕士研究生，研究方向为高压直流输电建模与分析，E-mail：18111304256@163.com" ]
[ "彭茂兰(1991)，女，硕士，工程师，研究方向为直流控制保护策略，E-mail：pengmaolan@im.ehv.csg" ]
- 基金信息：国家自然科学基金项目（51977135）。
DOI：10.19725/j.cnki.1007-2322.2023.0385
中图分类号： 1-
纸质出版：2026
- 稿件说明：
移动端阅览
王顺亮, 刘海军, 马俊鹏, 等. 考虑控制链路延时的双端LCC-HVDC系统改进谐波状态空间建模[J]. 现代电力, 2026,43(1):10-19.
王顺亮, 刘海军, 马俊鹏, et al. Improved Harmonic State Space Modeling for Dual-terminal LCC-HVDC Systems Considering Time Delay[J]. 2026, 43(1): 10-19.
王顺亮, 刘海军, 马俊鹏, 等. 考虑控制链路延时的双端LCC-HVDC系统改进谐波状态空间建模[J]. 现代电力, 2026,43(1):10-19. DOI： 10.19725/j.cnki.1007-2322.2023.0385.
王顺亮, 刘海军, 马俊鹏, et al. Improved Harmonic State Space Modeling for Dual-terminal LCC-HVDC Systems Considering Time Delay[J]. 2026, 43(1): 10-19. DOI： 10.19725/j.cnki.1007-2322.2023.0385.
摘要
随着电网换相型高压直流输电(line commutated converter based high voltage direct current，LCC-HVDC)技术的广泛应用，交直流混联电网的谐波交互问题愈加复杂，建立LCC-HVDC小信号模型是分析换流器交直流谐波耦合特性的重要手段。为此，基于谐波状态空间理论(harmonic state space
HSS)建立双端12脉动LCC-HVDC小信号模型，不仅考虑了LCC谐波传递特性，还考虑了换流变压器联结方式、控制链路延时等因素的影响。采用模块化思想分别建立各子系统谐波状态空间模型，通过接口矩阵连接为整体，使得LCC的谐波状态空间建模在易于扩展的同时，提高了精确度。最后，给出交直流谐波传递的具体表达式，并通过PSCAD仿真验证模型的准确性。所建模型不仅为后续扩展或接入更为复杂的系统奠定了基础，还可应用于双端LCC系统谐波交互稳定性评估和系统参数优化设计。
Abstract
With the widespread application of line-commutated-converter based high voltage direct current (LCC-HVDC) technology
the harmonic interaction issue of AC-DC hybrid power grid is becoming more and more serious. The establishment of an LCC-HVDC small signal model is an essential approach to analyze the AC-DC harmonic coupling characteristics of the converter. The influence of harmonics on the LCC-HVDC system is analyzed by constructing a small-signal model of dual-terminal 12-pulse LCC-HVD based on the harmonic state space (HSS) theory. This model not only takes into account the LCC harmonic transfer characteristics and the connection method of converter transformers
but also considers the influence of time delay on the dual-terminal LCC system. The modeling process is simplified based on the idea of modularization
so that the harmonic state space modeling is easier to expand
thereby improving the accuracy of small-signal modeling for the dual-terminal LCC system. The specific expression of AC and DC harmonic transfer is provided and the accuracy of the proposed model is verified through simulation. The proposed model lays a solid foundation for both subsequent expansion or access to more complex system
as well as the interaction stability analysis and parameter design of the dual-terminal LCC system.
关键词
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references
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