考虑开关设备和馈线自动化模式的配电网弹性评估方法

Method for Evaluating Distribution Network Resilience Considering Switchgear and Feeder Automation Modes

为定量分析开关设备和不同馈线自动化模式对配电网弹性水平的影响,提出了一种考虑开关设备和馈线自动化模式的配电网弹性评估方法。首先,构建分块-断路器关联矩阵确定故障情况下开关设备动作状态,分析集中型馈线自动化、电压时间型就地重合式馈线自动化、速动型智能分布式馈线自动化3种馈线自动化模式的动作逻辑过程,得到不同模式下非故障区域负荷停电时长计算式;其次,从宏观结果和微观过程2个层面构建弹性评估指标体系,对开关设备和不同馈线自动化模式对配电网弹性水平的影响进行多维度评估;最后,基于改进的IEEE-33节点配电网开展算例分析,验证了所提评估方法的有效性。

In this study,a method for evaluating the distribution network resilience that reflects switchgear and feeder automation modes was developed to quantitatively analyze the effects of the switchgear and different feeder automation modes on the resilience level of a distribution network.First,the block-circuit breaker correlation matrix was constructed to determine the action state of the switchgear in the case of failure.The action logic process of three feeder automation modes,that is,the centralized feeder automation,volt-time local recombination feeder automation,and quick-acting intelligent distributed feeder automation,was analyzed,and the formula for calculating load outage duration in the non-fault area in different modes was derived.Second,an elastic evaluation index system was established based on two levels of macro-results and micro-processes,and the influence of switchgear and different feeder automation modes on the resilient level of distribution network was evaluated in multiple dimensions.Finally,a case study was conducted based on the improved IEEE-33 node distribution network to verify the effectiveness of the proposed evaluation method.