| 引用本文: | 党存禄,林国富.超导储能在并网直驱风电系统中的应用研究[J].电力系统保护与控制,2013,41(16):48-53. |
| DANG Cun-lu,LIN Guo-fu.Application research of superconducting magnetic energy storage in grid-connected directly-driven wind[J].Power System Protection and Control,2013,41(16):48-53 |
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| 摘要: |
| 针对直驱风电系统并网运行过程中存在的输出有功功率波动和低电压穿越问题，在变换器的直流环节并联超导储能系统。对超导储能系统的斩波器提出双闭环加脉冲判断的控制策略，确保超导磁体线圈电流水平，使超导储能系统可以快速、准确地充放电，从而稳定直流环节功率。同时，通过引入谐振控制器的方法，对网侧变换器的控制策略进行改进，实现电网电压不对称跌落情况下，负序分量引起波动的有效控制。仿真结果表明，采用上述方案后直驱风电系统向电网输送较为平滑的有功功率、低电压穿越能力得到了提升。 |
| 关键词: 直驱风力发电 超导储能 斩波器控制 变换器控制 谐振控制器 功率平滑 低电压穿越 |
| DOI：10.7667/j.issn.1674-3415.2013.16.007 |
| 分类号: |
| 基金项目:甘肃省自然科学基金项目（1208RJZA151）；甘肃省教育厅硕导基金项目（1203ZTC025） |
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| Application research of superconducting magnetic energy storage in grid-connected directly-driven wind |
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DANG Cun-lu,LIN Guo-fu
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| Abstract: |
| For the problems of output active power fluctuations and low voltage ride through in direct-driven wind power system grid-connected operation, superconducting magnetic energy storage system is added in parallel at DC-side of the converter. A novel dual closed-loop additional pulse judgment control strategy of superconducting magnet energy storage chopper is proposed, which aims to stabilize DC-side power by ensuring current level of superconducting magnet coil and making superconducting magnet energy storage charge-discharge quick and accurate. At the same time, in order to realize effective control of fluctuations caused by negative sequence components, network-side converter control strategy is improved by the introduction of resonant controller under the asymmetrical grid voltage sag condition. Simulation results show that direct-driven wind power system with the above scheme can transmit smoother real power to grid and low voltage ride through capability can be promoted. |
| Key words: direct-driven wind power superconducting magnet energy storage chopper control converter control resonant controller power smoothing low voltage ride through |
