为解决新能源多变流器并网系统MGCCS(multiple grid-connected-converter system)中的电能质量相关问题,首先基于谐波状态空间HSS(harmonic state space)方法建立MGCCS的串联和并联模型。HSS模型考虑了开关过程中的高频分量,其内部的Toe...为解决新能源多变流器并网系统MGCCS(multiple grid-connected-converter system)中的电能质量相关问题,首先基于谐波状态空间HSS(harmonic state space)方法建立MGCCS的串联和并联模型。HSS模型考虑了开关过程中的高频分量,其内部的Toeplitz矩阵能够有效捕捉变流器内部的谐波耦合。在建立MGCCS串联和并联HSS模型的基础上,引入虚拟电阻改进模型,并考虑电网阻抗的影响,以模拟多变流器并网系统。通过对状态矩阵的特征值分析,对多变流器互联系统的谐波稳定性进行研究。研究深入分析了主电路和控制器参数对谐波不稳定性的影响,预测谐波不稳定模式的振荡频率。MATLAB/Simulink仿真结果及RT-LAB实验结果验证了基于HSS改进模型的正确性以及谐波稳定性分析的准确性。展开更多
Customer satisfaction and participation in utility supply packages is the first and foremost factor in the success of any supplying agency whether wholesale or retail dealer. The paper presents the concept of major pr...Customer satisfaction and participation in utility supply packages is the first and foremost factor in the success of any supplying agency whether wholesale or retail dealer. The paper presents the concept of major prospects of non- autonomous micro-grids installed in a certain locality. The article shows the basic background that is required for the installment of micro grid in a particular area and discusses the primary factors or pre-requisites that are required for the existence and operation of micro-grids. It elaborate the major profitable applications and benefits that developing and developed states get by using micro-grids in an area where utility grid is already functioning .It also explains the basic improvement in the quality of supply from micro grid after its installment. It also throws light on afterwards impact on society with this system, such impacts include reliability, tariff rates, economics etc. The article discusses micro-grids as the future of modern power systems. This paper shows significance of modernization by latest topologies in power systems and its effect that will come afterwards.展开更多
文摘为解决新能源多变流器并网系统MGCCS(multiple grid-connected-converter system)中的电能质量相关问题,首先基于谐波状态空间HSS(harmonic state space)方法建立MGCCS的串联和并联模型。HSS模型考虑了开关过程中的高频分量,其内部的Toeplitz矩阵能够有效捕捉变流器内部的谐波耦合。在建立MGCCS串联和并联HSS模型的基础上,引入虚拟电阻改进模型,并考虑电网阻抗的影响,以模拟多变流器并网系统。通过对状态矩阵的特征值分析,对多变流器互联系统的谐波稳定性进行研究。研究深入分析了主电路和控制器参数对谐波不稳定性的影响,预测谐波不稳定模式的振荡频率。MATLAB/Simulink仿真结果及RT-LAB实验结果验证了基于HSS改进模型的正确性以及谐波稳定性分析的准确性。
文摘Customer satisfaction and participation in utility supply packages is the first and foremost factor in the success of any supplying agency whether wholesale or retail dealer. The paper presents the concept of major prospects of non- autonomous micro-grids installed in a certain locality. The article shows the basic background that is required for the installment of micro grid in a particular area and discusses the primary factors or pre-requisites that are required for the existence and operation of micro-grids. It elaborate the major profitable applications and benefits that developing and developed states get by using micro-grids in an area where utility grid is already functioning .It also explains the basic improvement in the quality of supply from micro grid after its installment. It also throws light on afterwards impact on society with this system, such impacts include reliability, tariff rates, economics etc. The article discusses micro-grids as the future of modern power systems. This paper shows significance of modernization by latest topologies in power systems and its effect that will come afterwards.
