煤矿供电数字化防越级跳闸保护系统研究

发布时间：2018-03-29 10:49

本文选题：煤矿　切入点：越级跳间　出处：《西安科技大学》2017年硕士论文

【摘要】：煤矿供电网络的安全运行是煤矿正常生产的重要前提,继电保护系统对煤矿供电系统的保护起着举足轻重的作用。受许多因素影响,我国矿井下的供电系统网络在实际运行时,上级变电所开关经常会因为下级变电所线路出现故障而越级跳闸,从而出现了扩大井下停电区域的现象,影响矿井安全运行与正常生产。研究越级跳闸的原因,采取合适的方法降低其发生的可能性,对提高生产效率和减少人员伤亡有着非常重要的意义。本文对构成煤矿供电系统的各个部分进行了具体分析,其中井下供电系统所出现的越级跳闸问题是本文主要研究内容,同时针对现有的能够应对该问题的方法进行了研究,进而深入研究了光纤电流纵差保护、IEEE1588时钟同步技术理论、IEC61850通信标准。基于上述技术的研究和问题的分析,采用了符合IEC61850通信标准的过程层、间隔层和站控层的三层式网络架构,设计了煤矿供电网络防越级跳闸保护系统。电气设备的管控一体化以及网络化信息共享,可以有效避免供电系统出现“越级跳闸”故障,为煤矿井下变电站无人值守创造了条件。并经过系统的实验、调试运行验证了系统的正确性、最终实现煤矿井下安全供电的目的。煤矿供电数字化防越级跳闸系统的研究,为煤矿井下安全生产提供了可靠的保护,能够有效的提高煤矿的生产力,同时确保工作人员的人身安全,为社会发展创造更高的经济利益。
[Abstract]:The safe operation of the coal mine power supply network is an important prerequisite for the normal production of the coal mine. The relay protection system plays an important role in the protection of the coal mine power supply system. Under the influence of many factors, the power supply system network under the mine in our country is in actual operation. The switch of the superior substation often overruns because of the fault of the line of the subordinate substation, which results in the phenomenon of expanding the underground power cut area, which affects the safe operation and normal production of the mine, and studies the causes of the leapfrog tripping. It is of great significance to improve the production efficiency and reduce casualties by adopting appropriate methods to reduce the possibility of its occurrence. This paper makes a concrete analysis of the components of the power supply system in coal mines. The overstep tripping problem of underground power supply system is the main research content of this paper. At the same time, the existing methods to deal with this problem are studied. Furthermore, the theory of IEEE1588 clock synchronization technology and the communication standard IEC61850 are deeply studied. Based on the above research and analysis of the problems, a three-layer network architecture, which conforms to the IEC61850 communication standard, is adopted in the process layer, the interval layer and the station control layer. In this paper, the protection system of the coal mine power supply network is designed. The integration of electric equipment management and control and the sharing of network information can effectively avoid the fault of "overstep tripping" in the power supply system. The condition is created for the unattended substation in underground coal mine. The correctness of the system is verified by the system experiment, and the purpose of safety power supply in coal mine is finally realized. It provides reliable protection for underground safety production, can effectively improve the productivity of coal mines, at the same time ensure the personal safety of staff, and create higher economic benefits for social development.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD611.5

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