中国电机工程学报2025，Vol.45Issue(20)：7856-7869,中插2,15.DOI:10.13334/j.0258-8013.pcsee.240871
可控电压源-电流源型混合直流系统送出方案及控制策略研究
Research on the Transmission Scheme and Control Strategy of Controllable Voltage Source-current Source Hybrid DC System
摘要
Abstract
To realize the long-distance and high-efficiency transmission of water and wind clean energy,this paper proposes a controllable voltage source-current source hybrid bipolar UHVDC transmission scheme for large-scale clean energy delivery.The paper establishes a quasi-steady state model of the controlled voltage source-current source hybrid DC system,and analyzes the operation mode and the power operation characteristics of the AC/DC system after large-scale clean energy integration.In addition,a closed-loop control strategy is proposed in this paper,which can effectively track the given reference value of the voltage signal from the capacitor and realize the unit power factor operation.Based on the established mathematical model,to optimize the fast tracking of the capacitor voltage controller,a controlled current source converter controller is designedso that the system parameters can meet the design requirements.Finally,a controllable voltage source-current source hybrid UHVDC system is constructed,and simulation analysis is carried out to verify the operation characteristics and control strategy of the system under the transient and steady-state condition,focusing on the startup process of the system,rated operation,and the dynamic response characteristics under the improved controller parameters.关键词
混合直流送出方案/控制策略/运行特性Key words
hybrid DC transmission scheme/control strategy/operating characteristics分类
信息技术与安全科学引用本文复制引用
熊耀,魏晓光,汤广福,单云海,李松,张闻闻,杜蕙,齐磊..可控电压源-电流源型混合直流系统送出方案及控制策略研究[J].中国电机工程学报,2025,45(20):7856-7869,中插2,15.基金项目
国家重点研发计划项目(2023YFB2405900).National Key R&D Program of China(2023YFB2405900). （2023YFB2405900）
