基于窄带物联网(NB-IOT)的低压配电用户侧状态评估技术研究

Low voltage power distribution user side state assessment based on narrowband Internet of things (NB-IOT) Technology research

随着配电网负荷的快速发展,用户对供电可靠性要求越来越高。目前,供电公司对低压侧供电回路末端状态信息主要依赖用户停电后打入的"95598"客服电话,配合配电网自动化、停电管理等系统进行低压网络故障处理。同时,只能根据停电用户的描述来预判跌落保险或开关的位置,对停电规模、人员力量和抢修计划进行分析,确定抢修优先级,计算现场所需工作力量,预估恢复时间,并管理现场工作。故障处理普遍存在故障判断不全面、抢修不及时、工作强度高和实施成本高等现象。如何快速、准确和全面地采集低压侧供电回路状态信息就显得尤为重要。因此,需要深入研究低压用户侧供电回路状态评估及故障预警技术,实时掌握配电网低压侧供电回路运行状态信息。

With the rapid development of distribution network load, users have higher requirements for power supply reliability. At present, the power supply company mainly relies on the “95598” customer service phone number dialed by users after power outages for low-voltage side power supply loop terminal status information,and cooperates with distribution network automation and power outage management systems to handle low-voltage network faults. At the same time, it is only possible to predict the location of the fall fuse or switch based on the description of the power outage user, analyze the scale of the power outage, personnel strength, and emergency repair plan, determine the priority of emergency repair, calculate the work force required on site, estimate the recovery time, and manage it field work. In troubleshooting, there are common phenomena such as incomplete fault judgment, delayed repairs, high work intensity, and high implementation costs. How to quickly, accurately and comprehensively collect the status information of the low-voltage side power supply loop is particularly important.Therefore, it is necessary to in-depth study of low-voltage user-side power supply loop status assessment and fault warning technology, and real-time grasp of the operating status information of the low-voltage side power supply loop of the distribution network.