【摘要】：交聯(lián)聚乙烯電力電纜具有優(yōu)越的電氣性能、便于敷設(shè)等優(yōu)點(diǎn),在當(dāng)前電力網(wǎng)絡(luò)中的應(yīng)用越來越廣泛。電力電纜的大量投入,隨之而來的是越來越多的電纜故障問題,電纜故障都是由絕緣缺陷發(fā)展而來的。電纜存在絕緣缺陷時(shí),缺陷部位會(huì)產(chǎn)生局部放電,通過對(duì)電力電纜進(jìn)行局部放電測(cè)量,可以及時(shí)發(fā)現(xiàn)電纜中存在的絕緣缺陷,有效避免因絕緣缺陷引起的電纜擊穿故障,避免電力事故的發(fā)生,提高電纜運(yùn)行的可靠性。傳統(tǒng)的電力電纜局部放電現(xiàn)場(chǎng)試驗(yàn)方法存在著設(shè)備體積大、對(duì)電纜造成損傷等問題,振蕩波檢測(cè)方法因?yàn)樵O(shè)備便攜性以及良好的檢測(cè)效果得到了越來越多的認(rèn)可和應(yīng)用。針對(duì)國(guó)內(nèi)外目前采用的振蕩波試驗(yàn)設(shè)備充電方法的不足,本文設(shè)計(jì)了一種全新的充電方法,并在此基礎(chǔ)上設(shè)計(jì)了電力電纜現(xiàn)場(chǎng)試驗(yàn)用的振蕩波檢測(cè)設(shè)備,設(shè)備主體結(jié)構(gòu)包括振蕩波主電路、控制電路、信號(hào)采集系統(tǒng);根據(jù)振蕩波檢測(cè)設(shè)備所需滿足的系統(tǒng)指標(biāo),搭建仿真電路進(jìn)行仿真,確定主電路中各部分所需滿足的參數(shù)條件。根據(jù)仿真所得的參數(shù)條件,完成振蕩波設(shè)備中主要器件的設(shè)計(jì),包括:可調(diào)直流高壓電源、高壓固態(tài)開關(guān)、觸發(fā)控制系統(tǒng)、數(shù)據(jù)采集傳感器。其中可調(diào)高壓直流電源實(shí)現(xiàn)對(duì)振蕩波設(shè)備中電容充電從而對(duì)試品電纜進(jìn)行充電,高壓固態(tài)開關(guān)完成電路中充電與振蕩狀態(tài)間的狀態(tài)轉(zhuǎn)換,觸發(fā)控制系統(tǒng)實(shí)現(xiàn)對(duì)高壓固態(tài)開關(guān)的可靠一致性導(dǎo)通,數(shù)據(jù)采集傳感器實(shí)現(xiàn)對(duì)電力電纜局部放電信息的采集。目前普遍采用的基于峰值-時(shí)間序列的局部放電脈沖電流檢測(cè)方法存在不足,本文介紹了實(shí)驗(yàn)室所設(shè)計(jì)的數(shù)據(jù)采集系統(tǒng)的檢測(cè)方法。搭建實(shí)際電路對(duì)所設(shè)計(jì)的振蕩波設(shè)備進(jìn)行試驗(yàn),通過試驗(yàn)結(jié)果可以看出,本文采用的電纜充電方法具有充電速度快,對(duì)電纜損害小等優(yōu)點(diǎn);通過人工電纜缺陷下的局部放電試驗(yàn),確定了本論文所設(shè)計(jì)的電纜振蕩波局部放電檢測(cè)設(shè)備的可行性,固態(tài)高壓開關(guān)體積小、控制方便,觸發(fā)電路高可靠性和抗干擾能力強(qiáng),采集系統(tǒng)可以完成局部放電脈沖電流波形-時(shí)間(相位)的采集。系統(tǒng)各部分都達(dá)到了設(shè)計(jì)要求。
[Abstract]:XLPE power cable is widely used in power network because of its superior electrical performance and easy laying. With the great investment of power cable, more and more problems of cable fault are brought about, and the fault of cable is developed from insulation defect. When the cable has insulation defect, partial discharge will occur in the defective part. By measuring the partial discharge of power cable, the insulation defect in the cable can be found in time, and the breakdown fault caused by the insulation defect can be effectively avoided. Avoid power accidents and improve the reliability of cable operation. The traditional power cable partial discharge field test method has many problems such as large equipment volume and damage to the cable. The oscillating wave detection method has been more and more recognized and applied because of the portability of the equipment and the good detection effect. In view of the shortage of the current charging methods of the oscillating wave test equipment used at home and abroad, a new charging method is designed in this paper, and on the basis of this, the oscillatory wave detecting equipment used in the field test of power cable is designed. The main structure of the equipment includes a main circuit of oscillating wave, a control circuit and a signal acquisition system. According to the system index of the oscillating wave detecting equipment, the simulation circuit is built to simulate, and the parameter conditions of each part of the main circuit are determined. According to the parameters obtained from the simulation, the design of the main components in the oscillating wave equipment is completed, including: adjustable DC high voltage power supply, high voltage solid state switch, trigger control system, data acquisition sensor. The adjustable high voltage DC power supply can charge the test cable by charging the capacitor in the oscillation wave equipment, and the high voltage solid state switch completes the state conversion between the charging and the oscillating state in the circuit. The trigger control system realizes the reliable and consistent conduction to the high-voltage solid-state switch, and the data acquisition sensor can collect the partial discharge information of the power cable. The current peak-based PD pulse current detection method based on peak-time series is inadequate. This paper introduces the detection method of the data acquisition system designed in the laboratory. The experimental results show that the cable charging method adopted in this paper has the advantages of fast charging speed and little damage to the cable. Through the partial discharge test under artificial cable defects, the feasibility of the cable oscillation wave partial discharge detection equipment designed in this paper is determined. The solid-state high-voltage switch is small in volume, convenient in control, high reliability in trigger circuit and strong in anti-interference ability. The acquisition system can complete the partial discharge pulse current waveform-time (phase) acquisition. All parts of the system meet the design requirements.
【學(xué)位授予單位】：西安科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM855

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 楊蘭均;李晨輝;黃東;安珊;馬江波;王維;;串聯(lián)晶閘管的同步觸發(fā)技術(shù)研究[J];高電壓技術(shù);2016年10期

2 李軍浩;韓旭濤;劉澤輝;李彥明;;電氣設(shè)備局部放電檢測(cè)技術(shù)述評(píng)[J];高電壓技術(shù);2015年08期

3 王有元;王亞軍;熊俊;李光茂;陸國(guó)俊;;振蕩波電壓下10kV交聯(lián)聚乙烯電纜中間接頭的局部放電特性[J];高電壓技術(shù);2015年04期

4 黃志豪;;電力電纜局部放電測(cè)試技術(shù)分析[J];上海電力學(xué)院學(xué)報(bào);2014年05期

5 江軍;羅定平;馬國(guó)明;李成榕;李慶民;王偉;;應(yīng)用于電纜振蕩波系統(tǒng)的高壓固體開關(guān)研究[J];浙江大學(xué)學(xué)報(bào)(工學(xué)版);2014年04期

6 朱英偉;周凱;游世宇;吳雨波;萬利;雷勇;;電纜附件局部放電超聲波檢測(cè)裝置的設(shè)計(jì)與實(shí)驗(yàn)[J];電線電纜;2013年02期

7 章銘杰;周雁;;XLPE電力電纜局部放電在線測(cè)試的現(xiàn)狀與探討[J];電線電纜;2012年04期

8 張海;王天正;于嘉;;電力電纜局部放電全過程檢測(cè)系統(tǒng)[J];山西電力;2012年04期

9 朱良;李文斐;;高頻電流耦合法測(cè)量XLPE電力電纜局部放電[J];云南電力技術(shù);2009年04期

10 唐志國(guó);王彩雄;陳金祥;吳文宣;李成榕;;局部放電UHF脈沖干擾的排除與信號(hào)的聚類分析[J];高電壓技術(shù);2009年05期

相關(guān)碩士學(xué)位論文 前5條

1 趙豐;電纜現(xiàn)場(chǎng)試驗(yàn)用高壓衰減振蕩波發(fā)生裝置的研制[D];哈爾濱理工大學(xué);2016年

2 王亞軍;振蕩波電壓下10kV交聯(lián)聚乙烯電纜局部放電特性與識(shí)別研究[D];重慶大學(xué);2015年

3 戴旭益;基于振蕩波的局部放電測(cè)量系統(tǒng)研究[D];上海電力學(xué)院;2015年

4 孫志明;10kV電纜振蕩波局部放電檢測(cè)技術(shù)研究及應(yīng)用[D];華北電力大學(xué);2012年

5 葉開顏;交聯(lián)聚乙烯電力電纜電樹枝化的影響因素及機(jī)理研究[D];重慶大學(xué);2008年

，

本文編號(hào)：2410939