VSC-HVDC系统风力发电结构分析与控制  

Structure Analysis and Control of Wind Power Generation in VSC-HVDC

作　　者：徐科[1] 吴超[2] 杨晓静[3] 胡敏强[4] 

机构地区：[1]天津市电力公司技术中心,天津市和平区300022 [2]泰州供电公司电力调度中心,江苏省泰州市225300 [3]天津市电力公司电力调度通信中心,天津市河北区300010 [4]东南大学电气工程学院,江苏省南京市210096

出　　处：《电网技术》2009年第4期103-108,共6页Power System Technology

摘　　要：针对基于电压源换流器的高压直流输电(voltage source converter based high voltage direct current,VSC-HVDC),提出了基于永磁同步风力发电机、不控整流和Boost电路的变速直流风力发电系统结构。首先给出先并后串的新型风电场结构;然后建立最小串联系统的简化模型,用一种基于直流电压电流乘积控制的最大风能跟踪控制算法解析出输出电压和输出功率的关系。仿真结果表明:最小串联系统中的2个机组可以互不影响地独立运行,输出电压按照输出功率的变化而变化,同时2个机组均具有较好的最大风能跟踪精度和速度。According to power transmission adopting voltage source converter based high voltage direct current （VSC-HVDC）, a structure of variable speed dc wind generation system based on permanent magnet DC synchronous wind power generator, uncontrolled rectifier and boost circuit is proposed. Firstly, a new type of wind farm with parallel-series structure is given; then a simplified model of minimum series system is built and the relation between output voltage and output current is analysed by use of maximal wind energy tracing algorithm based on the control using the product of DC voltage multiplied by DC current. Simulation results show that the two generation units in the minimum series system can operate simultaneously without interaction, and output voltage varies according to the variation of output power, meanwhile, both generation units possess better maximal wind energy tracing ability and speed.

关 键 词：基于电压源换流器的高压直流输电(VSC-HVDC) 变速直流风力发电系统 最小串联系统 最大风能跟踪 

分 类 号：TM711[电气工程—电力系统及自动化]