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Transient angle stability analysis of grid-connected converters with the first-order active power loop

机译:网格连接转换器的瞬态角度稳定性分析,具有一阶有源电源循环

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As the increasing application of power electronic converters in electric power grids, the stability of grid-connected converters has become a major concern for reliable operations of the power grid. This paper analyzes the transient stability of grid-connected converters with the first-order active power loop. It points out that the conventional equal-area criterion, which has been widely used in the transient stability analysis of synchronous generators, may not apply to grid-connected converters, due to the different dynamic characteristics between converters and synchronous generators. To tackle this challenge, this paper employs the phase portrait to analyze the transient stability of power converters, and it is found that the better transient stability performance can be achieved if the grid-connected converters are controlled as the first-order nonlinear system. Simulations and experimental results are given to verify the effectiveness of the theoretical analysis.
机译:随着电力电网在电力电网中的越来越多的应用,电网连接的转换器的稳定性已经成为电网可靠操作的主要问题。本文分析了一流的有源电源循环的网格连接转换器的瞬态稳定性。它指出,由于转换器和同步发电机之间的不同动态特性,传统的相等区域标准在同步发电机的瞬态稳定性分析中广泛用于网格连接的转换器。为了解决这一挑战,本文采用了相位肖像来分析功率转换器的瞬态稳定性,并且发现如果电网连接的转换器被控制为一阶非线性系统,则可以实现更好的瞬态稳定性性能。给出了仿真和实验结果来验证理论分析的有效性。

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