摘要
基于电压源型变流器的高压柔性直流输电(voltage source converter based HVDC,VSC-HVDC)是海上风电的典型输送方式,大规模海上风电经这种方式集结并接入陆上交流电网,对常规电力系统的影响越来越明显。分析了直驱式海上风电VSC-HVDC在主动调频控制下,对临近同步发电机组功角稳定性的影响。搭建了含风电VSC-HVDC的两机等值电力系统模型,通过理论推导和等面积法,分析了在发生负荷突变和短路故障时,考虑调频控制的风电VSCHVDC对临近同步发电机组功角摇摆的影响规律,最后通过在PSCAD/EMTDC软件上搭建的仿真模型验证了理论分析的有效性。
Voltage source converter based high voltage direct current （VSC-HVDC） is a typical transmission mode of offshore wind power farms. The large-scale offshore wind power farms exert more and more obvious impacts on the power angle stability of power systems. Mainly analyzed the effects of power angle stability of PMSG wind farms connected into two machine system by VSC-HVDC and its frequency regulation control. Built the models of offshore PMSG integrated by VSC-HVDC into two-machine system, and analyzed the effect of PMSG wind farms integrated by VSC-HVDC and its frequency regulation control on the stability of power angle in the case of load-changing and faults by theoretical derivation and area equivalent principle. Finally, the validity of the theoretical analyses were verified based on the power system simulation PSCAD/EMTDC.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第14期4027-4035,共9页
Proceedings of the CSEE
基金
国家高技术研究发展计划项目(863计划)(2014AA 052002)
国家电网公司项目(SGZJ0000BGJS1600332)~~
关键词
海上风电
柔性直流输电
功角稳定性
调频控制
短路故障
offshore wind farms
voltage source converter based HVDC （VSC-HVDC）
power angle stability
frequency control
faults
