摘要
全球能源互联网构建的基础是科学、合理地选择、建设多种多样的输电方式。电压源换流器型高压直流输电(voltage sourced converter-high voltage DC,VSC-HVDC)得到了越来越多的关注,是一种以电压源换流器和脉宽调制(pulse width modulation,PWM)等技术为基础,硬件上采用绝缘栅双极型晶体管(insulated-gate bipolar transistor,IGBT)等可关断器件,控制上采用PWM技术的一种新型输电技术。由于VSC可工作在无源逆变方式,可以向孤立负荷供电,VSC-HVDC常用于配电系统。建立VSC-HVDC配电系统的数学模型和控制器模型,将空间矢量PWM(space vector PWM,SVPWM)技术应用于VSC-HVDC供电系统,并对各种故障类型下VSC-HVDC配电系统运行特性进行仿真,验证所建模型的正确性。
Scientific and rational choice together with the construction of a wide variety of transmission mode is the basis of the construction of global energy internet. Voltage sourced converter-high voltage DC(VSC-HVDC) gains more and more attention, and it is a kind of new power transmission technology based on the VSC and pulse width modulation(PWM) technology, the hardware of which is insulated-gate bipolar transistor(IGBT) device that can be shut off, the control of which makes use of PWM. As VSC can work in the passive inverting mode and supply power to the isolated load, it can be used in power distribution system. In order to study the application of VSC-HVDC in distribution system, mathematic model and the controller model of VSC-HVDC are established, and the application of space vector PMW(SVPWM) to VSC-HVDC distribution system is presented. The simulations are performed on the operation characteristics of VSC-HVDC distribution system of different fault types, and the simulation results show the validity of the model.
出处
《智能电网》
2015年第12期1143-1148,共6页
Smart Grid
关键词
电压源换流器型高压直流输电
配电系统
故障
仿真分析
voltage sourced converters-high voltage DC(VSC-HVDC)
distribution system
fault
simulation
