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A comprehensive protection scheme for micro-grid using fuzzy rule base approach

机译：基于模糊规则库的微电网综合保护方案

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The paper presents a comprehensive primary and backup protection scheme for micro-grid using fuzzy rule base approach. The proposed scheme starts with preprocessing of the retrieved current and voltage signals at both ends of the faulted feeder and adjacent feeder to compute the differential features. The differential features are used to build two separate decision trees (DTs) for the primary and backup protection. The differential features between immediate buses of faulted feeder are considered for primary protection and differential features between far end buses of faulted and adjacent feeders are used to build decision tree for secondary protection. From the developed decision tree classification boundaries, the fuzzy membership functions are generated and the corresponding fuzzy rule base is formulated for final relaying decision. The proposed scheme is tested for numbers of fault and no fault events simulated in the studied micro-grid with wide variations in system parameters and fault parameters in different operating mode. The extensive test results show the efficacy of the proposed protection scheme to provide a reliable protection measure to both primary and backup protection of micro-grid.
机译：提出了一种基于模糊规则库的微电网综合主备保护方案。提出的方案首先对故障馈线和相邻馈线两端的检索到的电流和电压信号进行预处理，以计算差分特征。差异功能用于为主保护和备用保护构建两个单独的决策树（DT）。将故障馈线的直接母线之间的差异特征用于一次保护，将故障馈线和相邻馈线的远端母线之间的差异特征用于建立二级保护决策树。从制定的决策树分类边界，生成模糊隶属函数，并为最终的中继决策制定相应的模糊规则库。测试了所提出的方案的故障数量，并且在所研究的微电网中模拟了故障事件，并且在不同操作模式下系统参数和故障参数的变化很大。广泛的测试结果表明，所提出的保护方案的有效性，可以为微电网的主保护和备用保护提供可靠的保护措施。

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