基于N线的拓扑感知技术研究

Research on Topology Perceptive Technology Based on N-wire

随着科技革新与能源革命的深度融合,国家电网作为世界一流企业,提出了"推进电网向能源互联网转型升级"的口号;电网是由发电、输电、配电、用电等各类品种繁多的挂网设备组成的复杂系统,明晰挂网产品的拓扑网络,提高电网的智能化感知能力,及时消除安全隐患,确保电网健康、稳定运行成为当前最为迫切的任务;在对电网拓扑结构的研究过程中,提出了基于N线的拓扑感知技术,依据电流沿阻抗最小回路传输原理,采用现代微机处理与控制技术;经实验测试实现了针对电力N线的特征电流信号注入、检测和识别,降低了对挂网设备的影响;可以方便、快捷地接入台区变压器及各级分支箱侧,实现挂网设备的智能化拓扑识别,方便故障点的锁定,第一时间切断故障点电能供给,及时维修故障,确保电力正常、高效的供应。

With the deep integration of scientific and technological innovation and energy revolution,as a world-class enterprise,State Grid put forward the slogan of "promoting the transformation and upgrading of power grid to energy Internet".Power grid is a complex system composed of a wide variety of grid connected equipment such as power generation,transmission,distribution and power consumption.It has become the most urgent task to clarify the topology network of grid connected products,improve the intelligent perception ability of power grid,eliminate potential safety hazards in time,and ensure the healthy and stable operation of power grid.In the research process of power grid topology,a topology sensing technology based on N-line is proposed.According to the principle of current transmission along the minimum impedance loop,modern microcomputer processing and control technology is adopted.Through the experimental test,the characteristic current signal injection,detection and recognition for power n-line are realized,which reduces the impact on the network equipment.It can be easily and quickly connected to the transformer in the station area and the side of branch boxes at all levels,realize the intelligent topology identification of network equipment,facilitate the locking of fault points,cut off the power supply at the fault point at the first time,repair the fault in time,and ensure the normal and efficient power supply.