中国电机工程学报2024，Vol.44Issue(9)：3463-3475,中插10,14.DOI:10.13334/j.0258-8013.pcsee.223093
风火打捆传统直流外送系统中控制环节对轴系-控制交互模式的影响机理研究
Research on the Influence Mechanism of Control Loops on Shaft-control Interactive Mode for Wind-thermal-bundled Power Transmission Through LCC-HVDC System
摘要
Abstract
Torsional vibration of thermal power unit may be induced by the control system of wind farm and line commutated converter based high voltage direct current(LCC-HVDC)for wind-thermal-bundled power transmission through HVDC system.First,by using complex torque coefficient and eigenvalue analysis methods,it is identified that LCC-HVDC constant current and wind turbine DC voltage outer loop controllers are the key control loops affecting the shaft-control interactive mode.Then,based on the system transfer function,multiple key control paths which reflect the influence of LCC-HVDC constant current and wind turbine DC voltage outer loop controllers on shaft-control interactive mode are extracted,including HVDC constant current control path,wind turbine DC voltage control path and interactive control path.Then,the damping coefficients of shaft-control interactive mode provided by different paths are calculated quantitatively.The supplementary damping control is designed to improve path damping coefficients via phase compensation on key control paths,thereby suppressing torsional vibration.Finally,the PSCAD/EMTDC simulation results verify the correctness of theoretical analysis and the effectiveness of the oscillation suppression strategy.关键词
风火打捆直流外送系统/轴系-控制交互模式/关键控制环节/关键控制路径/附加阻尼控制Key words
wind-thermal-bundled power transmission through HVDC system/shaft-control interactive mode/key control loops/key control paths/supplementary damping control分类
信息技术与安全科学引用本文复制引用
郭春义,刘晓颖,吕乃航,张加卿..风火打捆传统直流外送系统中控制环节对轴系-控制交互模式的影响机理研究[J].中国电机工程学报,2024,44(9):3463-3475,中插10,14.基金项目
国家自然科学基金项目(52277093). Project Supported by National Natural Science Foundation of China(52277093). （52277093）
