摘要
全功率变流器(full size converter,FSC)可变速抽水蓄能技术是控制电网负荷频率,平衡可再生能源发电波动的有效手段。在介绍三电平FSC可变速抽水蓄能机组整体结构的基础上,给出了机侧变流器和网侧变流器的模型和控制策略。在确定由于电网需求而产生的参考功率的基础上,提出了FSC可变速抽水蓄能机组在发电模式和电动模式时有功功率和无功功率的控制策略。针对所建立的FSC可变速抽水蓄能机组模型,采用冲击响应傅立叶变换法,给出了机组的频谱特性,对照风电波动频谱特性,阐述了全功率机组对可再生能源引起的电网波动控制的有效性。最后对抽水蓄能机组在抑制风电出力波动中的作用进行了仿真验证。
Variable speed pumped storage（ VSPS） with full-size converter（ FSC） can be an effective measure for automatic frequency control and renewable energy generation fluctuation balance. This paper mainly studies the modeling and control strategies of the machine-side and grid-side converter,based on the introduction of the overall structure of VSPS with three-level FSC. On a basis of the given reference power generated by the need of grid operation,we propose the control strategy of active power and reactive power for FSC-VSPS under generator mode and motor mode. According to the proposed model of FSC-VSPS units,we adopt the Fourier transform method based on impulse response to present the spectrum characteristics of units. Compared with the spectrum characteristics of wind power fluctuation,this paper describes the effectiveness of control effect of the VSPS system with FSC to the power fluctuation caused by renewable energy.Finally,we simulate and verify the effect of VSPS units with FSC on the restrain action of wind power output fluctuation.
出处
《电力建设》
北大核心
2016年第4期91-97,共7页
Electric Power Construction
基金
国家电网公司科技项目(规模化新能源基地并网与直流送出)(XTB51201402357)
