具有直流故障穿越能力的变流器在直流配电网短路电流计算中的电流贡献近似

2019 IEEE Milan PowerTech Pub Date : 2019-06-23 DOI:10.1109/PTC.2019.8810472

Raphael Bleilevens, Alexander M. Jaschek, A. Moser

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引用次数: 2

摘要

本文提出了一种新的模型，该模型包含一个近似函数来近似具有直流故障穿越能力的变换器的直流短路电流贡献。该模型的预期应用领域是直流配电网规划中短路电流的快速代数计算。首先，介绍了具有直流故障穿越能力的变换器拓扑以及这些变换器拓扑对电流的贡献。然后，在初步研究的基础上，导出了一个近似函数来近似当前的贡献。最后，通过将模型的当前贡献与详细的瞬态仿真结果进行比较，验证了所推导的模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Approximation of Current Contribution by Converters with DC Fault Ride-Through Capability for Short Circuit Current Calculation of DC Distribution Grids

This paper presents a novel model including an approximation function to approximate the DC short circuit current contribution by converters with DC fault ride-through capability. The intended field of application of this model is a fast algebraic short circuit current calculation for DC distribution grid planning. In a first step, converter topologies with DC fault ride-through capability and the current contribution of these converter topologies are presented. Afterwards, based on preliminary investigations an approximation function to approximate the current contribution is derived. Finally, the derived model is validated by comparing the current contributions of the model with results of detailed transient simulations.

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2019 IEEE Milan PowerTech

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