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Protection of Autonomous Microgrids Using Agent-Based Distributed Communication

机译：基于代理的分布式通信对自治微电网的保护

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摘要

This paper presents a real-time implementation of autonomous microgrid protection using agent-based distributed communication. Protection of an autonomous microgrid requires special considerations compared to large-scale distribution networks due to the presence of power converters and relatively low inertia. In this paper, we introduce a practical overcurrent and a frequency-selectivity method to overcome conventional limitations. The proposed overcurrent scheme defines a selectivity mechanism considering the remedial action scheme of the microgrid after a fault instant based on feeder characteristics and the location of the intelligent electronic devices (IEDs). A synchrophasor-based online frequency-selectivity approach is proposed to avoid pulse loading effects in low inertia microgrids. Experimental results are presented for verification of the proposed schemes using a laboratory-based microgrid. The setup was composed of actual generation units and IEDs using the IEC 61850 protocol. The experimental results were in excellent agreement with the proposed protection scheme.
机译：本文介绍了使用基于代理的分布式通信实时实现自主微电网保护的方法。由于存在功率转换器和相对较低的惯性，因此与大规模配电网相比，对自治微电网的保护需要特别考虑。在本文中，我们介绍了一种实用的过电流和频率选择性方法，以克服常规限制。提出的过电流方案基于馈线特性和智能电子设备（IED）的位置，考虑了故障瞬间后微电网的补救措施方案，定义了一种选择性机制。为了避免低惯性微电网中的脉冲负载效应，提出了一种基于同步相量的在线频率选择性方法。提出了实验结果，以验证基于实验室的微电网对拟议方案的验证。该设置由使用IEC 61850协议的实际发电单元和IED组成。实验结果与提出的保护方案非常吻合。

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