本文選題：輸電線路　切入點(diǎn)：故障測(cè)距　出處：《華北電力大學(xué)》2017年碩士論文

【摘要】：輸電線路發(fā)生故障時(shí),快速對(duì)故障點(diǎn)進(jìn)行精確定位,確定故障點(diǎn)準(zhǔn)確位置對(duì)于輸電線路狀態(tài)運(yùn)行、檢修管理、提升生產(chǎn)運(yùn)行管理精益化水平的至關(guān)重要,它不僅能夠?yàn)榭焖贀屝藜皶r(shí)恢復(fù)電力供應(yīng)爭取時(shí)間而且能夠?yàn)楫?dāng)前故障率較高的線路進(jìn)行防雷設(shè)計(jì)提供重要的技術(shù)支撐。下面對(duì)本文的研究內(nèi)容歸納如下:(1)首先,對(duì)行波故障測(cè)距的應(yīng)用研究和發(fā)展趨勢(shì)進(jìn)行了綜述,指出了當(dāng)前行波故障測(cè)距現(xiàn)場應(yīng)用尚待解決的技術(shù)難點(diǎn)。根據(jù)行波理論闡述了行波傳輸過程中產(chǎn)生衰減與畸變、折射與反射的原因,為分布式輸電線路行波故障定位系統(tǒng)的研究提供了理論基礎(chǔ)。(2)其次,針對(duì)行波故障測(cè)距現(xiàn)場應(yīng)用中需要解決的技術(shù)問題展開研究,給出了所采用的技術(shù)方法和應(yīng)用結(jié)果。主要有一是研制輸電線路工頻負(fù)荷電流14~1000A時(shí)輸出功率2W的通信電源;二是闡述了行波電流傳感器和工頻電流傳感器的設(shè)計(jì)并對(duì)其功能進(jìn)行了相關(guān)驗(yàn)證性試驗(yàn);三是從數(shù)據(jù)通信模塊天線的選型和冗余設(shè)計(jì)兩個(gè)方面給出了數(shù)據(jù)通信可靠性設(shè)計(jì)的策略。(3)最后,根據(jù)研制的輸電線路行波故障定位系統(tǒng)樣機(jī)在現(xiàn)場獲取的行波電流數(shù)據(jù)和工頻故障電流數(shù)據(jù)對(duì)行波故障案例進(jìn)行分析,驗(yàn)證了研究工作的有效性
[Abstract]:When transmission line failure occurs, it is very important to locate the fault point accurately and determine the exact location of the fault point for the transmission line state operation, maintenance management, and improving the lean level of production operation management.It can not only buy time for rapid repair and timely restoration of power supply, but also provide important technical support for lightning protection design of current lines with high failure rate.The following research contents are summarized as follows: (1) first of all, the application research and development trend of traveling wave fault location are summarized, and the technical difficulties that need to be solved in the field application of traveling wave fault location are pointed out.According to the theory of traveling wave, the causes of attenuation and distortion, refraction and reflection in the course of traveling wave transmission are expounded, which provides a theoretical basis for the study of distributed traveling wave fault location system of transmission lines.The technical problems needed to be solved in the field application of traveling wave fault location are studied, and the technical methods and application results are given.One is to develop a 2W communication power supply with output power at power frequency load current 14000A of transmission line, the other is to elaborate the design of traveling wave current sensor and power frequency current sensor and to carry on the related verification test to its function.Thirdly, the strategy of reliability design of data communication is given from the aspects of antenna selection and redundancy design of data communication module. Finally,According to the traveling wave current data and the power frequency fault current data obtained from the prototype of the transmission line traveling wave fault location system, the case of the traveling wave fault is analyzed, and the validity of the research work is verified.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM755

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本文編號(hào)：1699719