本文關(guān)鍵詞： 電子式互感器 羅氏線圈 數(shù)學(xué)形態(tài)學(xué) 穩(wěn)態(tài)響應(yīng) 傳變特性 延時 WinPcap　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：國內(nèi)外針對電子式互感器技術(shù)的研究與應(yīng)用已有多年歷史。上世紀(jì)八十年代開始國外有相關(guān)產(chǎn)品面世并投入使用,國內(nèi)對電子式互感器的研究起步較晚,但隨著研究的投入和技術(shù)發(fā)展,相關(guān)產(chǎn)品相繼面世,實際掛網(wǎng)運行也已有十多年的歷史。在這期間積累了大量的使用經(jīng)驗,也暴露出了很多問題和缺陷,這為電子式互感器技術(shù)的發(fā)展指明了方向。針對電子式互感器的研究現(xiàn)狀和在實際應(yīng)用中出現(xiàn)的問題,結(jié)合理論分析發(fā)現(xiàn)電子式互感器是一個具有動態(tài)響應(yīng)行為的設(shè)備,而截止目前為止,國內(nèi)還沒有系統(tǒng)地開展電子式互感器動態(tài)響應(yīng)行為分析及對策研究工作。對此本課題研究設(shè)計了一套電子式互感器動態(tài)特性測試方法和測試系統(tǒng),希望能從動態(tài)特性測試的角度出發(fā)為電子式互感器的性能測試提供新的方法和視野,最終達到促進電子式互感器技術(shù)發(fā)展、進步的目的。針對電子式互感器的動態(tài)特性測試,本文從以下幾個方面進行了理論分析和功能實現(xiàn):(1)延時測量:本課題獨創(chuàng)性的設(shè)計了一套軟件與硬件相結(jié)合的全新的測試方法,且實際測試表明此方法有很高的測量精度和穩(wěn)定度;(2)穩(wěn)態(tài)響應(yīng)分析:以傅里葉變換為基礎(chǔ),通過對互感器的輸入輸出信號的諧波及相位變化的比較分析來評價電子式互感器的穩(wěn)態(tài)響應(yīng)能力;(3)非周期信號提取:本文通過研究給出了逐點傅里葉變換、小波包頻帶分解和數(shù)學(xué)形態(tài)學(xué)變換三種提取方法,并做分析比較;(4)諧波及行波傳變特性分析:用于評價電子式互感器對實現(xiàn)合并單元不同功能的(保護測量、行波測距)信號的傳變能力;(5)錯步輸出:用于分析采樣時刻固定的電子式互感器采集器對輸入時刻任意的高頻信號的采樣誤差。理論分析和實測結(jié)果表明,本課題的研究成果可以實現(xiàn)對電子式互感器動態(tài)響應(yīng)特性的檢測,電子式互感器對繼電保護行為影響分析,電子式互感器諧波特性檢測等工作,可以較好的對電子式互感器動態(tài)響應(yīng)行為進行測試,為改進電子式互感器性能提供技術(shù)手段。
[Abstract]:Domestic and foreign research and application of electronic transformer technology has been many years of history. In -20s, there are related products in foreign countries and put into use, the domestic research on electronic transformers started late. However, with the investment and technological development of the research, the related products have been published one after another, the actual operation of the network has been more than 10 years of history. During this period, accumulated a lot of experience, but also exposed a lot of problems and defects. This indicates the direction of the development of electronic transformer technology, aiming at the current research situation of electronic transformer and the problems in practical application. Combined with theoretical analysis, it is found that electronic transformer is a device with dynamic response behavior, but so far. There is no systematic research on dynamic response behavior and countermeasures of electronic transformers in China. In this paper, a set of testing methods and testing system for dynamic characteristics of electronic transformers are designed. It is hoped that it can provide a new method and vision for the performance testing of electronic transformers from the point of view of dynamic characteristic testing, and finally promote the development of electronic transformers technology. The purpose of this progress is to test the dynamic characteristics of electronic transformers. This paper carries on the theoretical analysis and the function realization from the following several aspects: this topic originality has designed a set of software and the hardware union brand-new test method. The experimental results show that the method has high accuracy and stability. (2) Steady-state response analysis: based on Fourier transform, the steady-state response ability of electronic transformer is evaluated by comparing the harmonic and phase changes of input and output signals of transformer. (3) Aperiodic signal extraction: in this paper, three extraction methods, point by point Fourier transform, wavelet packet frequency band decomposition and mathematical morphology transformation, are presented and compared. (4) Analysis of harmonic and traveling wave transmission characteristics: used to evaluate the transmission ability of electronic transformer to different functions (protection measurement, traveling wave ranging) of merging unit; Error output: used to analyze the sampling error of the electronic transformer collector with fixed sampling time to the high frequency signal at any input time. The theoretical analysis and the measured results show that. The research results of this paper can be used to detect the dynamic response characteristics of electronic transformers, analyze the influence of electronic transformers on relay protection behavior, and detect harmonic characteristics of electronic transformers. It can better test the dynamic response behavior of electronic transformer and provide technical means for improving the performance of electronic transformer.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM45

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本文編號：1479236