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Improvement of non-standardized directional overcurrent relay coordination by invasive weed optimization

机译：通过侵入性杂草优化改善非标准化定向过流继电器的协调性

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The use of non-standardized inverse time curves for improving overcurrent relay coordination performance is presented in this paper. Since the use of same curve type does not guarantee curve intersection-free in meshed systems, numerous violations of coordination constraints may appear. Hence, non-conventional time curves offer altenative solution as time curve design is determined for each relay coordination pair problem. The model and implementation of optimization algorithm for coordination must be capable of handling increased problem dimension and constraints. Also, different short circuit currents must be taken into account to guarantee the relay coordination over the entire coordination interval. The invasive weed optimization (IWO) algorithm has been adapted for the high dimension coordination problem and has been tested on several IEEE systems. Overall results expose the enhancement of relay coordination when using non-standardized inverse time curves and IWO. (C) 2017 Elsevier B.V. All rights reserved.
机译：本文提出了使用非标准化的反时限曲线来改善过流继电器的协调性能。由于使用相同的曲线类型不能保证在网格化系统中没有曲线相交，因此可能会出现许多违反协调约束的情况。因此，当为每个中继协调对问题确定时间曲线设计时，非常规时间曲线提供了替代性解决方案。用于协调的优化算法的模型和实现必须能够处理增加的问题维度和约束。同样，必须考虑不同的短路电流，以确保继电器在整个协调间隔内的协调。侵入性杂草优化（IWO）算法已针对高维协调问题进行了调整，并已在多个IEEE系统上进行了测试。当使用非标准化的反时限曲线和IWO时，总体结果显示了中继协调的增强。 （C）2017 Elsevier B.V.保留所有权利。

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