The Influence of Inverter-Based DGs and Their Controllers on Distribution Network Protection
The Influence of Inverter-Based DGs and Their Controllers on Distribution Network Protection
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DOI：
10.1109/tia.2013.2297452
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发表时间：
2014-07-01
影响因子：
4.4
通讯作者：
Illindala, Mahesh S.
中科院分区：
文献类型：
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作者：
Haj-ahmed, Mohammed A.;Illindala, Mahesh S.
分布式发电在配电网中的日益普及对配电网的保护和稳定性产生了深远的影响。随着越来越多的分布式电源被引入网络，传统的保护方案和算法需要进行广泛的研究。IEEE标准1547的当前版本没有提出在存在各种DG的情况下用于故障电流检测的全面解决方案。基于电力电子逆变器的DG（IBDG）在配电网保护中受到特别关注，因为它们通常无法提供足够的故障电流，并且它们的控制器在DG行为中起主要作用。在本文中，电压和电流控制器的工业和商业电力系统的保护方案的IBDG的影响进行了研究。结果表明，逆变器的控制模式有其故障电流水平和持续时间的直接影响。通过一个简化的含IBDG的配电网模型，在电压和电流控制模式下进行试验，验证了这些控制器的效果。本文还提出了一种自适应继电保护算法来检测故障的IBDG与各种类型的控制器的存在。
The ever growing penetration of distributed generation (DG) in a distribution network has a profound impact on network protection and stability. Traditional protection schemes and algorithms need to be extensively investigated as more and more DGs get introduced into the network. The current version of IEEE Standard 1547 does not present a comprehensive solution for fault current detection in the presence of various kinds of DGs. Power electronic inverter-based DGs (IBDGs) are of special concern in distribution network protection as they are often incapable of providing sufficient fault current and their controllers play a principal role in the DG behavior. In this paper, the effects of voltage and current controllers for IBDGs on industrial and commercial power system protection schemes are investigated. It is shown that the inverter control mode has a direct impact on its fault current levels and duration. A simplified distribution network model with IBDG operating under voltage and current control modes was tested to verify the effects of these controllers. This paper also proposes an adaptive relaying algorithm to detect the faults in the presence of IBDGs with various types of controllers.