line-to-ground fault 中文意思是什麼
line-to-ground fault
解釋
線路對地故障-
Through analysising the characteristics of the power system with floating neutral point deeply, the paper puts forward a new plan of single - phase to ground fault line selection on the base of s ' s signal injecton method and gives the hardware and software design. in this design, the high speed sampling and data processing is carried out through using dsp processor ; the large electrice current is drived through the application of a high - performance audio power amplifier and transformer ; the communication between host computer and detectors is realized through rs485 bus technology ; the difference multilevel frequency - selected amplifier is designed and the feeble signal of space is sampled on the base of the theory of magnetic induction ; the interface between dsp and exterior chip and rs485 interface logical is designed through using fpga ; the using of lcd module and keyboard interfacing chip makes the interface between human and machine ; the programme of host computer and detectors is designed through using blocking design method
在本設計中，採用高速的dsp處理器，實現了對故障特徵信息的高速採集與處理;採用大功率的功放晶元與變壓器配合的方法，實現了大電流信號的驅動輸出;採用485總線技術，組建了裝置主機與多探測器之間的主從式通訊網路，實現了多干擾條件下裝置主機與多探測器的可靠通訊;設計了差分式多級選頻放大電路，採用磁感應的方法實現了對空間微弱信號的接收;利用fpga技術，實現了控制器與多外設的介面及數字信號的串並轉換;採用了先進的lcd液晶顯示模塊及鍵盤介面晶元，設計了人機信息交互的介面;採用了模塊化的軟體設計方法，開發了裝置主機及探測器的軟體程序。 -
Line - to - ground fault location maintains unresolved to power distribution networks for a long time
而配電網的單相接地故障定位長期以來是難以解決的課題。 -
An automatic fault location method is proposed based on ftu after the circuit analysis of single line - to - ground fault in distribution networks
通過對配電網發生單相接地故障后饋線的電壓、電流變化規律的分析，論文提出了基於饋線現場監控終端ftu的故障點智能定位方法。 -
Based on the main fault - character analysis of single line - to - ground fault in non - grounded distribution networks, the location algorithms by injecting current are proposed for diagnosing and locating faults
基於對配電網發生單相接地故障后的故障主要特徵的分析，論文應用加信診斷方法，提出了相應的接地故障定位演算法。 -
This paper analyses the transient character of line fault when the neutral point connects to ground in different ways. from the angle of signal processing, the wavelet packet analysis theory is introduced to selecting fault, in which the fault character is not the steady signal but the transient signal
本文在中性點不同接地方式下，研究和分析了線路故障特徵量的暫態特點，主要從信號處理的角度，提出將小波包分析理論運用到故障選線。 -
This paper analyses the steady and transient character of line fault when the neutral point connects to ground in different ways. from the angle of signal processing, the wavelet analysis theory and the artificial neural networks are introduced to fault location, in which the fault character is not the steady signal but the transient signal
本文在中性點不同接地方式下，研究和分析了線路零序故障特徵量的穩態和暫態特點，主要從信號處理的角度，提出將小波分析理論和人工神經網路原理運用到故障定位，將基於穩態信號的定位原理轉移到基於故障特徵量暫態信號的定位原理。 -
Firstly, a relevant algorithm is presented for locating single - line - to - ground ( slg ) fault in distribution networks, fault functions are reasoned out and analyzed for single - phase and three - phase distribution lines, and criterion measure, which are based on the frequency, phase and shape characteristics of the fault function spectrums, are also presented for locating slg faults
首先論文對三相均勻換位線路的故障定位進行了公式推導和數值計算分析，並在頻域內對故障函數的頻譜曲線幅值、相角和頻率特性進行了分析，提出了相應的故障定位判據。 -
At present, the devices for single - phase to ground fault line selection all have deficiencice and can ’ t be suit of the appeal of the present - day power system ’ development. it will be very significative of inventing of a new reliable and intelligent device
國內外現有的故障選線裝置還存在一定缺陷，不能適應現代電力系統的發展要求，研製出一種高可靠性、智能化的接地故障選線裝置，對于提高小電流接地系統單相接地故障選線準確性和可靠性具有重要意義。
分享友人