可视化三工位隔离接地一体化装置替代可视化接地装置的应用探讨

Application of Visual Three-Position Isolation and Grounding Integration Device Replacing Visual Grounding Device

[目的]隔离开关是轨道交通牵引供电系统中的关键设备,随着智能化开关设备技术的发展和接触网智能运维管理需求的不断提升,需对接触网开关设备整体的智能化、可视化进行研究分析。[方法]介绍了可视化接地技术的应用现状,以及二隔离接地一体化的必要性;介绍了可视化三工位隔离接地一体化装置的原理及其功能特点,并进行其优势分析。以南宁轨道交通3号线挂网试运行为例,验证了可视化三工位隔离接地一体化装置的功能和性能。[结果及结论]融合了隔离开关和可视化接地装置的可视化三工位隔离接地一体化装置,具备快装式自锁三工位开关、程序化控制、全面可视化、网络拓扑安全连锁、故障自诊断等功能特点,可以实现接触网停送电和接地操作的整体可视化、智能化。与仅加装可视化接地装置的应用模式相比,所提出的三工位模式具有更齐全、安全、高效、智能、经济等优点,是一种切实可行的接触网开关设备智能化解决方案。

[Objective]Disconnector is a key equipment in rail transit traction power supply system.With the development of intelligent switch equipment technology and the increasing demand for intelligent operation and maintenance management of power supply catenary,it is necessary to conduct research and analysis on the overall intelligence and visualization of catenary switch equipment.[Method]The application status of visual grounding technology and the necessity of two-isolation grounding integration are introduced;the principle and functional characteristics of the visual three-position isolation grounding integration device are introduced,and its advantage analysis is carried out.Taking the trial run of Nanning Rail Transit Line 3 as an example,the functions and performance of the visual three-position isolation grounding integration device are verified.[Result&Conclusion]Through integrating disconnector and visual grounding device,the visual three-position isolation and grounding integration device has the functional features of quick-installed self-locking three-position switch,programmed control,comprehensive visualization,network topology safety interlocking,and fault self-diagnosis.It can realize the overall visualization and intelligence of the catenary power cut/transmission and grounding operation.Compared with the application mode of only adding a visual grounding device,the proposed three-position mode boasts more complete,safe,efficient,intelligent,and economic advantages,and is a practical intelligent solution for the catenary switch device.