CAJ | 학술논문

风力发电具有随机性、间歇性，而且风电场一般处于偏远地区，风电经分频输电接入电网为风电的远距离输送提供了一个解决方案。该文设计了12脉波交交变频器的主电路和控制电路，并以其作为风电接入装置，用常规同步发电机模拟永磁直驱同步发电机，在动模实验室模拟了变速变频风力发电，向系统成功输送20kW有功，证实了以分频输电为背景的变速变频风力发电的可实现性，并在此基础上初步讨论了交交变频器的运行方式，实现了风电场的有功开环调节。
풍력발전구유수궤성、간헐성，이차풍전장일반처우편원지구，풍전경분빈수전접입전망위풍전적원거리수송제공료일개해결방안。해문설계료12맥파교교변빈기적주전로화공제전로，병이기작위풍전접입장치，용상규동보발전궤모의영자직구동보발전궤，재동모실험실모의료변속변빈풍력발전，향계통성공수송20kW유공，증실료이분빈수전위배경적변속변빈풍력발전적가실현성，병재차기출상초보토론료교교변빈기적운행방식，실현료풍전장적유공개배조절。
Fractional frequency transmission system（FFTS） provides a novel approach for the remote wind farm integrated into grid. This approach could overcome the great challenges caused by the randomicity and the intermittence of the wind power. The key equipment of FFTS was cycloconverter. First, an experimental FFTS was proposed. And the power circuit and the control circuit of the 12-pulse cycloconverter were designed. In this experimental system, a synchronizing generator was used to simulate the permanent magnet synchronous generator （PMSG） in wind farm. Furthermore, the operation mode of cycloconverter was discussed. Finally, the open-loop active power regulations method was also introduced. Experiment results show that this system can transmit 20 kW electric power into grid, and verify the realizability of the system which used to integrate wind power into grid via FFTS.