Extreme weather in recent years has caused serious damage to the highway power grid system, how to reasonably deploy mobile power vehicles is the current highway fault repair in the urgent need to solve the problem. Therefore, this paper proposes an optimal scheduling method for mobile power vehicles on highways under extreme weather. Firstly, the Monte Carlo simulation method is used to construct mathematical models of ice-covering load, wind load and insulator flashover under extreme weather through historical weather data and actual line parameters, to obtain the vulnerability model of the transmission line, and then to determine the fault conditions in the whole system. Secondly, the Monte Carlo simulation method and the convergence condition of the objective function are used to find out the optimal access point of the mobile power vehicle, and the mobile power vehicle is dispatched to improve the system resilience. Finally, the simulation analysis is carried out by using the data of the self-consistent energy system of a highway service area in Xinjiang. The results show that compared with the commonly used method of fixing the access point of mobile power vehicles, the dispatching method proposed in this paper increases the proportion of loads that are restored to the power supply by 12%, which enhances the efficiency of mobile power vehicle and the resilience performance of the self-consistent energy system.
在“双碳”政策背景下,减少碳排放、实现交通能源融合发展势在必行[1]。科技部提出,围绕高速公路路网系统建立与自然禀赋相适配且具有能源利用全生命周期特性的微电网系统,推动交通能源绿色发展。高速公路自洽能源系统(Self-consistent energy system, SCES)正是在“双碳”政策背景下,以交通能源融合为理念,由“源-网-荷-储”四大主体构成的系统。但是,近年来自然灾害、恶意破坏等极端情况给高速公路带来了巨大冲击,造成长时间、大范围的停电事故频发[2]。电网作为国民生产的关键基础设施,一旦遭遇极端灾害(如台风、地震、冰雪)引发的线路故障、设备损坏、系统崩溃等,将造成难以估量的损失。同时,在战争发生时,电网也是主要的攻击目标。再加上环境恶化导致极端天气频发,从而导致高速公路配电网大面积停电事故增加。移动电源车由于配套设备结构简约、体积小、质量轻,具有灵活、机动的特性,因此能快速到达受灾现场,迅速恢复局部电力供应,为后续恢复工作奠定基础。但是,由于移动电源车配置数量有限、容量配备灵活性不高,因此如何合理调配移动电源车是目前高速公路故障抢修中亟须解决的问题[3]。
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