海上风电中频汇集不控整流系统谐波抑制  

Harmonic Suppression for Offshore Wind Power Medium Frequency Collection Diode Rectifier Transmission System

作　　者：王汝田[1] 张新成 邵鑫铭 刘闯[1] WANG Ru-tian;ZHANG Xin-cheng;SHAO Xin-ming;LIU Chuang(Northeast Electric Power University,Jilin 132000,China)

机构地区：[1]东北电力大学,电气工程学院,吉林吉林132000

出　　处：《电力电子技术》2024年第9期79-83,99,共6页Power Electronics

摘　　要：目前,深远海上风电换流站采用不控整流器的直流送出方案极大地提高了送出系统的可靠性和经济性。然而,不控整流器会产生大量谐波进而降低风电汇集系统输电能力。针对上述问题,这里提出一种改进电压控制策略,即在风机网侧变换器传统控制策略基础上增加抑制谐波电流的附加控制环,实现对谐波电流的主动抑制。此外,这里分析了谐波电流对变压器和换流器的功率损耗,通过抑制谐波电流进而减小功率损耗,提高输电能力。最后,通过仿真计算和实验验证,证实了改进电压控制策略的正确性和有效性。Currently,the DC delivery scheme of the deep ocean wind power converter station with diode rectifiers dra-matically improves the reliability and economy of the delivery system.Nevertheless,diode rectifiers produce substantial harmonics,leading to decreased power quality and transmission capacity of the wind power integration system.In re-sponse to the above,an improved voltage control is proposed,adding an additional control loop for suppressing har-monic currents to the traditional control strategy of the wind turbine grid-side converter,to realize active suppression of harmonic currents.In addition,the power loss of harmonic currents on transformers and converters is analyzed,and the power loss and improves the transmission capacity by suppressing the harmonic currents is reduced.Finally,the improved voltage control approach is validated through simulation calculation and experimental verification,confirming its accuracy and efficacy.

关 键 词：海上风电 风机网侧变换器 不控整流器 谐波电流 

分 类 号：TM614[电气工程—电力系统及自动化]