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首页> 外文期刊>Electric power systems research >Protection coordination scheme for directional overcurrent relays considering change in network topology and OLTC tap position
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Protection coordination scheme for directional overcurrent relays considering change in network topology and OLTC tap position

机译：考虑网络拓扑和OLTC抽头位置改变的定向过流继电器的保护协调方案

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This paper proposes a robust protection coordination scheme of directional overcurrent relays (DOCRs) for multiple network topologies in the presence of on-load tap changers (OLTCs). The robust protection coordination scheme provides single settings of DOCRs which will be valid for all N - 1 contingencies created after outage of a line, transformer or generator. An efficient constraint reduction strategy is introduced to reduce the number of coordination constraints caused by consideration of multiple topologies. The impact of tap positions of the OLTCs has been incorporated in the required steady-state and short-circuit current calculations. The robust protection coordination scheme has been posed as an optimization problem and solved using an interior point method based algorithm. The feasibility and the effectiveness of the proposed formulation and solution algorithm has been demonstrated on the IEEE 14-bus power system network.
机译：本文提出了一种稳健的保护协调方案，用于在负载开换变换器（OLTCS）存在下的多个网络拓扑的定向过电流继电器（DOCRS）。强大的保护协调方案提供了对DOFR的单一设置，这对于在中断后创建的所有N-1次突发等有效性，变压器或发电机。引入有效的约束策略以减少通过考虑多个拓扑引起的协调约束的数量。 OLTCS的敲击位置的影响已被纳入所需的稳态和短路电流计算。鲁棒保护协调方案已被构成为优化问题，并使用基于内部点法解决的算法解决。在IEEE 14-Bus电力系统网络上已经证明了所提出的配方和解决方案算法的可行性和有效性。

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