风电经分频输电装置接入系统研究  

A New Wind Power Grid Connection Method Based on Fractional Frequency Transmission System

作　　者：迟方德[1] 王锡凡[1] 王秀丽[1] 

机构地区：[1]西安交通大学电气工程学院,陕西省西安市710049

出　　处：《电力系统自动化》2008年第4期59-63,共5页Automation of Electric Power Systems

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA05Z247);教育部光伏系统工程研究中心开放基金资助项目~~

摘　　要：基于分频输电理论,提出了一种全新的风力发电馈网方式——风电场经分频输电装置接入系统方式。该方式将风电场中所有风力发电机组发出的变化的低频电能通过控制系统收集到一起,经过远距离输电后再经过分频输电装置统一接入负荷中心。该方式通过降低输电频率来减少输电线路的电抗以及减少齿轮箱的增速比,提高了效率、减少了投资。算例以某实际风电场为例,分析了变速变频方式下风力发电机组的特性,与恒速恒频方式相比,该方式有效地提高了风力机的输出功率。Based on the theory of fractional frequency transmission system （FFTS）, a new approach to connect wind power farms into utility networks by using FFTS is presented. All variable low-frequency wind power generated in a wind power farm is collected, long distance transmitted, and then connected to the load center by use of FFTS. By lowering the wind power transmission frequency, the transmission line reactance and the speed-increasing ratio of gearbox can be effectively reduced to save capital costs. A practical wind power farm is studied. Simulation results indicate that the proposed approach can effectively increase electricity generated by wind power farm.

关 键 词：风电 分频输电 变速变频 风能利用系数 

分 类 号：TM614[电气工程—电力系统及自动化] TM72