期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
适用于故障特性分析的锂离子电池储能电磁暂态建模方法 被引量:4
1
作者 张家琪 刘朋印 +1 位作者 谢小荣 杨国生 《电力系统自动化》 EI CSCD 北大核心 2023年第7期166-173,共8页
为促进新能源的消纳利用,锂离子电池储能系统(LiBESS)在电网中得到了广泛应用,进一步导致电网故障特征更加复杂。为此,提出一种LiBESS电磁暂态建模方法。在分析故障特征的基础上,建立了功率变流器系统(PCS)模型和兼顾电池外特性、荷电... 为促进新能源的消纳利用,锂离子电池储能系统(LiBESS)在电网中得到了广泛应用,进一步导致电网故障特征更加复杂。为此,提出一种LiBESS电磁暂态建模方法。在分析故障特征的基础上,建立了功率变流器系统(PCS)模型和兼顾电池外特性、荷电状态的锂离子电池模型。PCS控制策略引入了故障穿越控制环和负序控制环,实现了故障穿越并消除了直流母线电压波动。此外,通过机理分析和仿真验证明确了LiBESS在不同充放电模式下的故障特性差异。最后,基于PSCAD/EMTDC的电磁暂态仿真和基于实时数字仿真器的硬件在环测试验证了所提建模方法的有效性。 展开更多
关键词 锂离子电池储能系统 功率变流器系统 电磁暂态建模 故障穿越 负序控制
下载PDF
On Impulse Switching Functions of Inverters as an Orthogonal System
2
作者 B. Dobrucky M. Pokomy M. Benova 《Journal of Mathematics and System Science》 2014年第12期743-749,共7页
The paper deals with impulse switching function which are used as exciting functions of one- and multidimensional state-space models of power electronic converters. Obviously, these functions are harmonic but using po... The paper deals with impulse switching function which are used as exciting functions of one- and multidimensional state-space models of power electronic converters. Obviously, these functions are harmonic but using power converters they can be strongly non-harmonic, sometimes piecewise constants with zero spaces between them. Then, one deals with power series of time pulses. The impulse switching functions which are orthogonal ones can be derived from these series. The new impulse switching functions are created using Z-transform, inverse Z-transform and numerical series/sequences. The impulse switching functions created this way can be used for both steady- and transient state investigation of converters. 展开更多
关键词 Power converter impulse switching function Z-TRANSFORM inverse Z-transform modelling and simulation steady stateoperation
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部