架空输电线在线监测系统供电技术的研究

发布时间：2018-01-16 12:16

本文关键词：架空输电线在线监测系统供电技术的研究　出处：《吉林大学》2017年硕士论文　论文类型：学位论文

【摘要】：架空传输线在远程电力传输中起到极其重要的作用,因为它相对于地底电缆而言,成本很低,效率很高,在可预见的未来,仍一直将是远程电力传输的主要方式。架空输电线承受的电压级别又通常都很高,它绵延千里,跨越广阔和复杂多变的地形地貌和气候条件,常年处于风吹日晒雨淋霜冻冰雪之中,极端气候条件所造成的导线的覆冰和风摆等都可能直接造成输电线的故障,而架空输电线承担的对电网安全性能的影响又是非常巨大的。随着对电网安全性能要求的日益提高,架空输电线的监控系统也越来越受到更广泛的重视。架空输电线的实时监控系统可以及时的指出和提醒系统运维人员其已经处于故障临界状态的位置,及时预防故障的发生。这些架空输电线的监测装置需要独立的供电,不能直接使用电网的高压,其供电要安全可靠而且其信号处理和传输系统也要能够对抗架空输电线自身所产生的巨大的电磁场辐射和高压电晕及局部放电所产生的干扰。其供电方式可以有多种选择,除了蓄电池之外,还可以选择的能量来源有诸如太阳能,风能,输电线自身的电场和磁场的能量等,每种方法都各有优缺点。这种电能的收集技术日益受到越来越多的关注和研究,这是两个方面的原因促成的,一是在实时数据采集和无线发射领域应用有很明确的需求,二是由于现代的电子设备的功耗正越来越小,通常只需要很小的功率就可以使其运行,这为其供电的方式提供了极大的灵活性和选择上的多样性。本文将对架空输电线监测装置的可能的供电方式进行分析和探讨,研究和总结了架空输电线的在线监测装置的供电所可以采取的各种方式,分析和比较了其各自的优缺点和适用的工况范围及其在实际应用中所应注意的重要事项,主要包括供电装置的可靠性,容量和性价比,多能量来源的协同性,用电环节能耗的管理和优化等方面内容。最后通过从仿真和实验测试两方面搭建实验电路对输电线监测装置供电系统进行了测试和分析。
[Abstract]:The overhead transmission line plays an important role in remote power transmission, because it is relative to the underground cables, low cost, high efficiency, in the foreseeable future, still will be the main way of remote power transmission. And usually very high voltage overhead transmission wires under the level, for it thousands of miles across the vast and complicated topography and climatic conditions, perennial in rain snow frost exposed to the weather, the wire caused by extreme climatic conditions of the ice and the wind pendulum may be directly caused by the fault of the transmission line, and overhead transmission lines take on the grid security performance is very large. With the requirement of power grid safety monitoring system and increasing of overhead transmission lines more attention. The real-time monitoring system of overhead transmission lines can timely remind and pointed out that the system operation and maintenance Who is in the critical state of fault location, fault prevention timely. The monitoring device of overhead transmission lines require independent power supply, high pressure can not directly use the power grid, the power supply reliability and the signal processing and transmission system to large electromagnetic radiation generated against the overhead transmission line and high pressure corona and partial discharge caused by interference. The power supply can have a variety of options, in addition to the battery, can also choose the energy sources such as solar energy, wind energy, its transmission line electric and magnetic energy, each method has advantages and disadvantages. Increasingly attracting more and more attention and research the power the collection technology, this is due to two aspects, one is a clear demand in the application of real-time data acquisition and wireless transmission field, two is due to the modern Power electronic equipment is increasingly small, usually only requires little power can make it run, this is the power supply mode provides great flexibility and diversity of choice. The analysis and discussion of possible ways of the power transmission line monitoring device on overhead, which can be used to study a variety of ways and summarizes the power line monitoring device of overhead transmission lines of the important matters of their respective advantages and disadvantages and the applicable conditions and scope in the application should pay attention to the analysis and comparison, including the power supply reliability, capacity and cost, coordination multi energy source, electric energy management link optimization and other aspects. Finally, from the two aspects of the simulation and test experiment circuit of transmission line monitoring device of power supply system is tested and analyzed.

【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM75

【参考文献】