Transient Short-Circuit Behaviour of Distributed Energy Sources and Their Influence on Protection Coordination

Proceedings of the 41st International Universities Power Engineering Conference Pub Date : 2006-12-01 DOI:10.1109/UPEC.2006.367535

D. Geldtmeijer, F. Provoost, J. Myrzik, W. Kling

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引用次数: 5

Abstract

This paper presents the results obtained by research on the influence of distributed generation (DG) on protection in the distribution network. Generation connected to the grid is subject to protection regulations. Applying the present regulations to distributed generation results in unnecessary disconnection of these distributed generators. This may lead to problems at a high penetration level of distributed generation, e.g. a long-term disturbed voltage level in the grid. Thus revision of the present protection coordination is necessary. To investigate the effect of different protection schemes, a dynamic model of a distribution network is designed. This model is implemented in DIgSILENT PowerFactory for dynamic studies. The research shows that it is possible for DG to ride-through a fault in an adjacent feeder. It is also provides a protection scheme for DG that distinguishes a fault in an adjacent feeder and a fault in the same feeder as the DG. By applying this scheme unnecessary disconnection of DG will be avoided

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分布式电源暂态短路行为及其对保护协调的影响

本文介绍了分布式发电对配电网保护影响的研究结果。并网发电受保护法规的约束。将现行规定应用于分布式发电，会造成分布式发电机组不必要的断电。这可能会导致分布式发电在高渗透水平时出现问题，例如电网中的长期扰动电压水平。因此，修订现行的保护协调是必要的。为了研究不同保护方案对配电网的影响，设计了配电网的动态模型。该模型在DIgSILENT PowerFactory中实现，用于动态研究。研究表明，DG有可能通过相邻馈线的故障。它还为DG提供了一种区分相邻馈线故障和与DG相同馈线故障的保护方案。采用该方案可避免不必要的DG断路

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Proceedings of the 41st International Universities Power Engineering Conference

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