發(fā)布時間：2018-04-21 07:37

  本文選題：近電預(yù)警 + 電場測量　； 參考：《南京理工大學(xué)》2017年碩士論文

【摘要】：自高壓電高速發(fā)展以來,觸電事故就一直如影隨形,尤其是機械施工觸電跳閘更是屢見不鮮。就中國而言,機械車輛觸電造成的人員傷亡以及引起的大規(guī)模斷電對社會經(jīng)濟都造成了巨大損失。基于電場強度測量技術(shù),本文對機械車輛靠近高壓電線時的預(yù)警保護系統(tǒng)進行了研究和設(shè)計。對現(xiàn)有的一些高壓輸電線識別方法和設(shè)想進行了比較分析,確定使用近電感應(yīng)檢測的方法作為車輛預(yù)警出發(fā)點。對機械車輛近電預(yù)警系統(tǒng)技術(shù)指標(biāo)進行分析,理清了機械車輛近電預(yù)警所需要實現(xiàn)的功能。對高壓輸電線電場分布進行了研究,通過仿真實驗,確認(rèn)其分布規(guī)律。根據(jù)國標(biāo)中機械車輛所要求的安全距離,結(jié)合電場分布的特點設(shè)定了三檔不同的比較靈敏度和邊界報警的功能。分析了球形傳感器測量原理,指出了其測量誤差來源,分析畸變電場的影響,通過標(biāo)準(zhǔn)值與測量值的對比分析,得到探頭的修正矩陣。設(shè)計了機械車輛預(yù)警系統(tǒng)的硬件電路和軟件程序。系統(tǒng)分為信號采集端和通訊報警端,兩者之間通過NRF905無線模塊進行數(shù)據(jù)傳輸。信號采集端重在信號調(diào)理,實現(xiàn)了數(shù)據(jù)比較判斷。通訊報警端重在報警通訊,集成有無線通訊、語音報警、GPS定位、短信通訊和機械車輛緊急制動幾大模塊。本系統(tǒng)最大的創(chuàng)新點是可以覆蓋10kV、11OkV、220kV、330kV四檔不同等級的高壓輸電線安全距離判斷,同時設(shè)有三檔靈敏度和一個自學(xué)習(xí)型邊界報警功能。所設(shè)計的機械車輛近電預(yù)警系統(tǒng)能夠正常工作,基本滿足了設(shè)計要求。
[Abstract]:Since the high-speed development of high-voltage, electric shock accidents have always been accompanied, especially mechanical construction tripping is common. As far as China is concerned, casualties caused by electric shock of mechanical vehicles and massive power outages have caused enormous social and economic losses. Based on the electric field intensity measurement technology, this paper studies and designs the early warning and protection system of mechanical vehicle near high voltage wire. This paper makes a comparative analysis of some existing methods and ideas of high-voltage transmission line identification, and determines that the method of near-inductance should be used as the starting point of vehicle warning. This paper analyzes the technical index of the mechanical vehicle near electric warning system, and clarifies the function of the mechanical vehicle near electric warning system. The electric field distribution of high voltage transmission line is studied, and its distribution law is confirmed by simulation experiment. According to the safety distance required by mechanical vehicles in the national standard and combined with the characteristics of electric field distribution, three different comparative sensitivities and the function of boundary alarm are set up. The measuring principle of spherical sensor is analyzed, the source of measurement error is pointed out, the influence of distorted electric field is analyzed, and the correction matrix of probe is obtained by comparing the standard value with the measured value. The hardware circuit and software program of the mechanical vehicle warning system are designed. The system is divided into signal acquisition terminal and communication alarm terminal. Data transmission between them is carried out through NRF905 wireless module. The signal acquisition end focuses on the signal conditioning, which realizes the data comparison and judgment. The alarm end of communication focuses on alarm communication, which integrates several modules, such as wireless communication, voice alarm and GPS positioning, short message communication and emergency braking of mechanical vehicles. The biggest innovation of this system is that it can cover 10kV 11OkV 220kV 220kV 330kV high voltage transmission line safety distance judgment, and has three sensitivity and a self-learning boundary alarm function at the same time. The designed mechanical vehicle near-electric warning system can work normally and basically meets the design requirements.
【學(xué)位授予單位】：南京理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TU603

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本文編號：1781501