ungrounded system 中文意思是什麼
ungrounded system
解釋
不接地制- ungrounded : adj. 1. 沒有根據[理由]的，不從事實出發的。2. 不真實的，捏造的。3. 【無線電】不接地的。
- system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
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Fault analysis and its precautionary measures for electromagnetic voltage transformer in ungrounded system
電磁式電壓互感器在不接地系統中的故障簡析及防止措施 -
The single - phase grounding fault frequently occurs in neutral ungrounded system, the fault line and fault location must be found to avoid a phase - to - phase short as soon as possible
單相接地故障在小電流接地系統中出現的比較頻繁，此時必須盡快找到故障線路以及大致的故障點，以避免兩相對地短路。 -
Further, the methods are proposed to compare and summarize for choosing fault line and detecting distance in neutral ungrounded system. subsequently, the characteristics of zero sequence current and transient courses are introduced and analyzed
接著對小電流接地系統單相接地故障時零序電流的暫態過程及特點做了介紹和分析。 -
Since that the choosing line hardware for the neutral ungrounded system has just passed part of the dynamic simulative test, matlab software was chosen to do a lot of simulative tests on single phase - to - grounding fault. and the simulative sampling ratio is almost the same as the hardware ' s. because there is a low wave filter in the hardware, i choose the db15 wave - let to carry out the multidimensional decomposition on the sample by the method of one dimension discrete wavelet in order to obtain low frequency signal including the high frequency transient information on single phase - to - grounding fault
鑒于實驗室已有的小電流接地系統選線硬體的研製只通過了實驗室里的動模試驗，故選用matlab軟體對小電流接地系統進行大量的單相接地故障模擬試驗，模擬的采樣率和硬體基本一致，由於硬體中帶有低通濾波器，故在進行采樣數據的morlet小波分析時先採用db15小波對采樣進行一維離散小波的多尺度分解，使得分解得到的低頻信號剛好包括了小電流接地系統單相接地故障時的暫態高頻信息，然後對這一信息再繼續進行小波演算法分析，分析結論表明利用變換后的實部、虛部和模值能夠較準確的實現單相接地故障時的故障選線和暫態高頻分量的提取。 -
The single phase - to - grounding fault frequently occurs in neutral ungrounded system. the fault line must be found to avoid a phase - to - phase fault. in this paper, firstly, the condition on single phase - to - grounding fault occurring in neutral ungrounded system are discussed and then the main troubles in choosing fault line are pointed out
本文首先分析了小電流接地系統發生單相接地故障時的情況，指出選線所遇到的主要困難，進而對小電流接地系統單相接地故障的選線及測距的方法做了比較和綜述。
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