Electrical power generation from wind technology is the most rapidly growing technology due to its ample characteristics.Nevertheless,because of its stochastic feature,it has the unnecessary impact on the operations a...Electrical power generation from wind technology is the most rapidly growing technology due to its ample characteristics.Nevertheless,because of its stochastic feature,it has the unnecessary impact on the operations and stability of the power grid system.The fluctuation of the grid frequency problem,for example,is more pronounced.The fluctuation of the frequency in turn impacts even the collapse of the power system.To minimize such problems,a droop-vector control strategy applied on a doubly-fed induction machine based(DFIM)variable speed pumped storage(VSPS)system is proposed in this paper.This method is should be used as a wind power fluctuation compensation solution in the wind farm-grid integration system.The system model is made on the basis of the technique called a phasor model.The frequency spectrum analysis approach is used in the VSPS plant for determining the dynamic performances of the grid in case of contingencies including wind power fluctuation compensation.The software platform MATLAB/Simulink is used for verifying the performance of the proposed system.The results show that the method of the frequency spectrum analysis technique is effective for determining the wind power fluctuation and stability requirements in large power networks.The control strategy proposed in this paper implementing the VSC-DFIM based VSPS plant integrated with the power gird and wind farm network achieves a well-controlled power flow and stable grid frequency with the deviations being in acceptable ranges.展开更多
基于4个台风过程中的长时间序列风速、风方向观测数据,分析研究了近地台风的湍流积分尺度和脉动风速谱等脉动特性。介绍了湍流积分尺度的几种常见的计算方法,基于实测台风数据,分析研究了台风过程中湍流积分尺度的变化以及不同计算方法...基于4个台风过程中的长时间序列风速、风方向观测数据,分析研究了近地台风的湍流积分尺度和脉动风速谱等脉动特性。介绍了湍流积分尺度的几种常见的计算方法,基于实测台风数据,分析研究了台风过程中湍流积分尺度的变化以及不同计算方法的稳定性。根据实测数据计算了纵向脉动风速谱,并与Von-Karm an谱、Davenport谱、S im iu谱和Harris谱等经验谱进行了比较,给出了最适合描述台风纵向脉动风速谱的经验谱。还计算了横向脉动风速功率谱,并与基于各向同性湍流理论推导出的水平横向脉动风速谱进行了对比。展开更多
基金supported by the State Key Laboratory of the Smart Grid Protection and Control of China and“111”project:Large Scale Power Grid Protection and Safety Defense 2.0(BP0820024)。
文摘Electrical power generation from wind technology is the most rapidly growing technology due to its ample characteristics.Nevertheless,because of its stochastic feature,it has the unnecessary impact on the operations and stability of the power grid system.The fluctuation of the grid frequency problem,for example,is more pronounced.The fluctuation of the frequency in turn impacts even the collapse of the power system.To minimize such problems,a droop-vector control strategy applied on a doubly-fed induction machine based(DFIM)variable speed pumped storage(VSPS)system is proposed in this paper.This method is should be used as a wind power fluctuation compensation solution in the wind farm-grid integration system.The system model is made on the basis of the technique called a phasor model.The frequency spectrum analysis approach is used in the VSPS plant for determining the dynamic performances of the grid in case of contingencies including wind power fluctuation compensation.The software platform MATLAB/Simulink is used for verifying the performance of the proposed system.The results show that the method of the frequency spectrum analysis technique is effective for determining the wind power fluctuation and stability requirements in large power networks.The control strategy proposed in this paper implementing the VSC-DFIM based VSPS plant integrated with the power gird and wind farm network achieves a well-controlled power flow and stable grid frequency with the deviations being in acceptable ranges.
文摘基于4个台风过程中的长时间序列风速、风方向观测数据,分析研究了近地台风的湍流积分尺度和脉动风速谱等脉动特性。介绍了湍流积分尺度的几种常见的计算方法,基于实测台风数据,分析研究了台风过程中湍流积分尺度的变化以及不同计算方法的稳定性。根据实测数据计算了纵向脉动风速谱,并与Von-Karm an谱、Davenport谱、S im iu谱和Harris谱等经验谱进行了比较,给出了最适合描述台风纵向脉动风速谱的经验谱。还计算了横向脉动风速功率谱,并与基于各向同性湍流理论推导出的水平横向脉动风速谱进行了对比。
