本文選題：雷電流 + 羅氏線圈　； 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：輸電線路因遭受雷擊產(chǎn)生的線路跳閘事故為電力系統(tǒng)運(yùn)行中的主要故障。雷電參數(shù)的準(zhǔn)確測量是研究雷電特性、分析雷擊事故原因的前提,在電網(wǎng)防雷設(shè)計中具有非常重要的作用。本文的主要研究工作包含以下幾個部分:(1)首先,對架空輸電線路雷電流波形的特征展開研究,對測量雷電流波形的傳感器羅氏線圈的原理以及分類進(jìn)行了理論分析,對羅氏線圈的傳遞函數(shù)及其等效電路模型進(jìn)行推導(dǎo),分析了傳統(tǒng)自積分式羅氏線圈測量雷電流產(chǎn)生誤差的原因,提出對傳統(tǒng)自積分式羅氏線圈進(jìn)行校正的必要性。(2)接著,根據(jù)自積分式羅氏線圈公式推導(dǎo)和仿真結(jié)果,分別提出模擬積分和數(shù)字積分兩種校正方法,并由此設(shè)計了新型模擬積分器,對系統(tǒng)誤差進(jìn)行理論分析和相關(guān)試驗(yàn);同時提出基于辛普森算法的數(shù)值積分校正方法,對校正效果進(jìn)行分析。(3)最后,將兩種校正型自積分式羅氏線圈應(yīng)用于輸電線路雷擊定位在線監(jiān)測系統(tǒng)工程現(xiàn)場,比對兩種校正方案的工程應(yīng)用中的優(yōu)缺點(diǎn)和適用場合。
[Abstract]:Transmission line tripping caused by lightning strike is the main fault in power system operation. The accurate measurement of lightning parameters is the premise to study the lightning characteristics and analyze the causes of lightning accidents. It plays an important role in the lightning protection design of power network. The main research work of this paper includes the following parts: (1) firstly, the characteristics of lightning current waveform of overhead transmission lines are studied, and the principle and classification of the sensor Roche coil for measuring lightning current waveform are analyzed theoretically. The transfer function of Roche coil and its equivalent circuit model are deduced, and the reason of the error caused by the traditional self-integral Roche coil in measuring lightning current is analyzed. The necessity of correcting the traditional self-integral Roche coil is put forward. (2) then, According to the derivation and simulation results of the self-integral Roche coil formula, two correction methods, analog integral and digital integral, are proposed, and a new analog integrator is designed. The system error is theoretically analyzed and tested. At the same time, a numerical integral correction method based on Simpson algorithm is proposed to analyze the correction effect. (3) finally, two kinds of self-integrated Roche coils are applied to the project site of on-line monitoring system for lightning strike location of transmission lines. Compare the advantages and disadvantages of the two correction schemes in the engineering application and the applicable situation.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM452

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 何健;張弓達(dá);徐陳華;張曉琴;;雷電定位系統(tǒng)在輸電線路雷擊故障分析中的應(yīng)用[J];電瓷避雷器;2012年04期

2 劉亞東;盛戈v，

本文編號：2103242