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  本文關(guān)鍵詞： 泄漏電流 測量 便攜式 應(yīng)用　出處：《高壓電器》2014年12期 　論文類型：期刊論文

【摘要】：隨著絕緣子表面污穢的積累,絕緣子表面泄漏電流在污穢受潮的過程中有顯著變化,泄漏電流對于描述絕緣子的絕緣狀態(tài)有著簡單易行、直觀高效的優(yōu)點。文中旨在介紹一種實用新型的便攜式泄漏電流監(jiān)測系統(tǒng),適用于現(xiàn)場外絕緣的絕緣狀況研究。該套系統(tǒng)數(shù)據(jù)采集使用差分模式,有效抑制共模信號干擾;數(shù)據(jù)同步采樣率最高可達到20 k S/s,采樣信號能夠保留泄漏電流原始信號的全部信息;泄漏電流傳感器選用具有分段處理信號功能的電阻型傳感器,抗電磁干擾能力強,適用于復(fù)雜電磁環(huán)境;系統(tǒng)測量范圍達到0.1 m A~5 A,相對誤差控制在2%以內(nèi),同時可以配合分壓器使用,測量與電流信號同步的電壓信號,便于分析處理研究。與硬件系統(tǒng)相配套的軟件平臺基于Lab VIEW程序搭建,以虛擬儀器的形式實現(xiàn)真實測量儀器的效果,具有操作簡單、功能豐富以及可擴展能力強的優(yōu)點。該套便攜式泄漏電流監(jiān)測系統(tǒng)具有質(zhì)量輕、體積小、經(jīng)濟靈活、移動方便等特點,適用于各科研單位在不同的試驗現(xiàn)場使用。
[Abstract]:With the accumulation of insulator surface contamination, the leakage current on the insulator surface has a significant change in the process of contamination and damp, and the leakage current is easy to describe the insulator insulation state. The purpose of this paper is to introduce a portable leakage current monitoring system, which is suitable for the study of insulation condition of external insulation in the field. The differential mode is used in the data collection of the system, which can effectively suppress the common mode signal interference. The data synchronous sampling rate can be up to 20 KS / s, the sampling signal can retain all the information of the original leakage current signal, and the leakage current sensor adopts resistive sensor with the function of signal processing in sections, which has strong ability of resisting electromagnetic interference. It is suitable for complex electromagnetic environment, the measuring range of the system is 0. 1 Ma / 5 A, the relative error is less than 2%, at the same time, it can be used with voltage divider to measure the voltage signal synchronized with the current signal. It is convenient to analyze and process research. The software platform matching with hardware system is built based on Lab VIEW program, and the effect of real measuring instrument is realized in the form of virtual instrument, which is easy to operate. The portable leakage current monitoring system has the advantages of light weight, small volume, economic flexibility, convenient movement and so on. It is suitable for various scientific research units to use in different test sites.
【作者單位】： 江蘇省電力公司;清華大學(xué)深圳研究生院;
【分類號】：TM216;TM934.31

【參考文獻】

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本文編號：1524112