Reconfiguration of the distribution network (DN) is the changing of status of normally open and close switches for a specific purpose. In this paper, a situation is studied in which a fluctuating load (such as a welder) violates the network power quality (PQ) standards. Therefore, in order to mitigate the emission of the generated flicker, an optimization problem is developed for improving the PQ of the network comprising voltage flicker level and voltage profile in addition to the network power loss as a traditional objective of the DN reconfiguration. The optimization procedure is performed by changing the network configuration using tie and sectionalizing switches. Discrete particle swarm optimization is utilized to optimize the network configuration. The proposed method is evaluated in two DNs. IEEE standard 69‐bus DN and 95‐bus practical Iranian DN are considered as case study networks. The results show the effectiveness of the proposed method for improving the network PQ, especially in case of voltage flicker. The presented studies and procedure will guide the utility engineers in making decisions associated with the choice of reasonable mitigation technique to overcome the identified PQ problems.

中文翻译：

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使用离散粒子群优化技术对配电网络进行重新配置以减少电压波动

配电网络（DN）的重新配置是出于特定目的更改常开和常闭开关的状态。在本文中，研究了负载波动（例如焊工）违反网络电能质量（PQ）标准的情况。因此，为了减轻所产生的闪烁的发射，开发了优化问题，以改善网络的PQ，除了网络功率损耗以外，还包括电压闪烁电平和电压曲线，这是DN重新配置的传统目标。通过使用联系交换机和分段交换机更改网络配置来执行优化过程。离散粒子群优化用于优化网络配置。建议的方法在两个DN中进行评估。将IEEE标准69总线DN和95总线实用的伊朗DN视为案例研究网络。结果表明，该方法在改善网络PQ方面是有效的，特别是在电压闪烁的情况下。提出的研究和程序将指导公用事业工程师做出与选择合理的缓解技术有关的决策，以克服已发现的PQ问题。