考虑动态交通网络的区域电-气互联系统灾后故障抢修策略

Post-disaster Fault Repair Strategy for Regional Interconnection Electricand Gas System Considering Dynamic Traffic Network

为了减弱极端事件对综合能源系统的影响,尽早恢复各类负荷,提高系统弹性。文中提出了一种考虑交通网与配电网级别的区域电-气互联系统(Interconnection Electric and Gas System,IEGS)协同运行的灾后故障抢修策略。首先,通过元胞传输模型建立了考虑系统实时恢复指标修正的交通流量分配模型,对交通网的交通流量进行预测;其次,在故障预分配的前提下建立了区域IEGS的故障恢复模型,协调优化维修队、分布式电源、配电网网架等资源,减少停电损失;然后以维修队的最小通行时间矩阵以及由系统实时恢复指标得到的交通网道路修正参数作为传递变量,在维修队开始移动的时间点,重新计算后续的修复计划以及交通网的运行情况,进行多时间断面优化;最后,通过算例仿真进行对比,验证了所提策略的有效性,并分析移动储能装置对故障恢复的影响。

In order to mitigate the impact of extreme events on the integrated energy system,restore various loads as soon as possible,and improve system flexibility.This paper proposes a fault repair strategy that considers the coordinated operation of the regional electric and gas system(IEGS)at the level of transportation and distribution networks.Firstly,a traffic flow allocation model considering the real-time recovery index correction of the system is established through the cellular transmission model to predict the traffic flow of the transportation network.Secondly,under the premise of fault pre allocation,a fault recovery model for regional IEGS is established to coordinate and optimize resources such as maintenance teams,distributed power supplies,and distribution network structures,to reduce outage losses.Then,using the minimum travel time matrix of the maintenance team and the road modification parameters of the traffic network obtained from the real-time recovery indicators of the system as transfer variables,at the time point when the maintenance team starts moving,the subsequent repair plan and the operation of the traffic network are recalculated,and the multi time section optimization is performed.Finally,the effectiveness of the proposed strategy is verified through a numerical simulation comparison.And analyze the impact of mobile energy storage devices on fault recovery.