混合双端直流输电系统向无源网络供电的研究  

Research on Power Supply from Hybrid Two-Terminal HVDC Transmission System to Passive System

作　　者：袁旭峰[1,2] 许伟杰[1] 欧家祥 张秋雁 

机构地区：[1]贵州大学电气工程学院,贵阳550025 [2]贵州电网公司博士后工作站,贵阳550002 [3]贵州电力试验研究院,贵阳550002

出　　处：《电测与仪表》2014年第17期117-122,共6页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(510670001);贵州省科技基金资助项目(黔科合J字[2008]2212号);贵州大学博士基金资助项目(贵大人基合字2007-019号)

摘　　要：建立了一个向无源系统供电的混合双端直流输电系统仿真模型,其整流器采用基于相控整流的常规换流器,逆变器采用交流侧带串联电容的电压源换流器,并为所建立的直流输电系统的整流器和逆变器设计了相应的控制策略,整流侧采用定直流电压控制,逆变侧采用定直流电压和定交流电压的控制。与传统的直流输电系统相比较,该混合直流输电系统可以直接向无源系统供电,无需增加外部换相电源或同步调相机。最后,对所建立的混合双端直流输电系统的特性进行了仿真分析,证实了所建立的混合双端直流输电系统模型的正确性和所提出控制方法的有效性,同时也表明这种输电系统具有许多不同于传统直流输电系统的优良运行特性。A simulation model of a hybrid two-terminal HVDC transmission system providing power to passive system has been established in this paper,the recitifier of which adopts a phase-controlled rectifier based common current converter,and the inverter of which takes use of a voltage source converter with series capacitance in AC part. Corre-sponding control scheme has also been designed for the rectifier and inverter in the proposed AC transmission system, which adopts constant voltage（ CV）control in rectifier and the constant DC voltage and constant AC voltage control in inverter. Compared with the traditional HVDC transmission system,such hybrid HVDC transmission system will be a-ble to achieve power supply to a passive load field without any external commutating phase power or synchronous phase modulator. The simulation results verify the correctness of the proposed hybrid two-terminal HVDC transmission sys-tem model as well as the effectiveness of the proposed control scheme. simultaneously,it is also proved that this kind of hybrid HVDC transmission system has some valuable operation performance,which is superior to the traditional HVDC transmission system.

关 键 词：混合双端直流输电 电压源型逆变器 电流源型整流器 脉冲宽度调制 

分 类 号：TM773[电气工程—电力系统及自动化]