近區故障 的英文怎麼說

中文拼音 [jìnqūgùzhàng]
近區故障 英文
close-in fault
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 區 : 區名詞（姓氏） a surname
  • 故 : Ⅰ名詞1 （事故） event; incident; happening; accident 2 （原因） cause; reason 3 （朋友; 友情） fr...
  • 障 : Ⅰ動詞（阻隔; 遮擋） block; hinder; obstruct Ⅱ名詞（遮擋物） barrier; block; obstacle
  • 故障 : hitch; breakdown; stoppage; fault; faulting; accident; blunder; bug; conk; failure; impairment; i...
  1. The mutual inductor of electric current and voltage mutual inductor play an important role in relay protection. prevent from ct differential to protect and miss movement an important subject that the generatrix is protected on the saturation, put forward two electric current pass zero hour linear to spread person who become put into differential to protect in ct in recent years, avoid ct saturation district, can judge the bus bar trouble correctly

    但是在母線區外發生短路故障（特別是故障電流含有大量非周期分量）時， ct會出現飽和現象， ct飽和后，不能正確地傳變一次側電流，從而使二次電流發生嚴重畸變，產生很大的差電流，這樣就容易引起誤動作。防止ct飽和時差動保護誤動作一直是母線保護的一個重要課題，近年來提出的在ct二次電流過零時的線性傳變區投入差動保護，避開ct飽和區，能對母線故障做出正確判斷。
  2. The merit of travelling waves location is its high precision, but it has dead line if the fault location is close to the line terminal or the fault occurs at the time close to zero point of current

    行波法測距的優點是精度高，但對近區故障或電流過零附近時刻發生的故障存在測距死區。
  3. Because affected by the type of lines, fault resistance and two sides systems ， fault analytical location has lower precision, but it has no dead line and is more better accurate if the fault location is close to the line terminal

    故障分析法由於受線路類型、過渡電阻、兩端系統的影響測距精度較差，但故障分析法不存在測距死區，尤其對近區故障的測距較為準確。
  4. Applying relative arithmetic to all kinds of faults and calculating off - line, we can master time - distance relation chart for all kinds of faults. computation indicates : when transmission lines occur faults, the data window of protection algorithm consisting of prefault and postfault data at the same time has important significance. the following methods are useful to achieve the inverse time characteristic : calculating impedance by using flourier in a full cycle, calculating work voltage by using fault component, calculating the torque created by a phase comparator or a magnitude comparator

    實際的計算表明：輸電線路發生故障后，用故障前後的數據同時充滿保護演算法的數據窗，對于快速切除近區故障具有很重要的意義；同時利用故障前後的數據，下述方法可以比較好地實現距離保護的反時限特性：直接用全周傅里葉演算法進行阻抗計算；採用工頻變化量阻抗繼電器進行工作電壓的計算；採用轉矩的思想進行轉矩的計算。
  5. So the development of self - energy sf6 cb is very important. in the paper, the math model of arc - quenching chamber air - pressure character is built on the base of 126kv / 31. 5ka self - energy sf6 cb ' s exploiting, then the theory analysis and calculation is deeply been done for cylinder radius, nozzle spout radius and opening position of moved contact that they have the essential effect for the use of arc energy in the course of opening. arc - quenching chamber parameter is confirmed according to the request of full opening and fault opening when the cb is opening

    本文針對126kv31 . 5ka自能式sf _ 6斷路器的研製，建立了相應的滅弧室氣壓特性數學模型，對自能式sf _ 6斷路器開斷過程中電弧能量利用有重要影響的滅弧室缸徑、噴口直徑、動觸桿開口位置進行了詳細深入的理論分析和計算，並根據斷路器開斷中的滿容量開斷和近區故障開斷的要求確定了滅弧室參數。
  6. Microprocessor distance protection set is one of the most important protections for high - pressure transmission lines. when high pressure transmission line occurs fault, due to it ' s high voltage level, faults brings big impact to power system and users. the closer the faults occur, the bigger impact it brings

    高壓線路發生故障時，由於電壓等級高，涉及面大，對于電力系統以及電力用戶沖擊很大；高壓線路故障地點距離保護安裝處越近，對于電力系統以及電力用戶的沖擊越大；距離保護的近區故障快速動作具有很重要的意義，本文基於上述目的研究微機距離保護的反時限。
  7. Compared with conventional methods, the proposed method is not disturbed by reflected waves from tee joints or other resistance discontinuities, and is not influenced by fault type, and can recognize the reflected wave from the fault point even when the fault point is near to the measuring terminal ( so - called dead - zone ), and simultaneously, the method reduces the influence of wave speed uncertainty

    與傳統的行波測距方法相比，這種方法不受電纜分支接頭或其他阻抗不匹配點反射波的干擾，不受故障類型的影響，在近區也不存在無法識別反射波的問題，同時也減少了波速不確定性對測距精度的影響。
  8. By analyzing the refraction 、 reflection process of fault transient current traveling wave of high voltage and characteristics of refraction 、 reflection coefficient systematically, a new fault location method of single ended traveling wave is presented. it can not only identify the reflection wave for fault location efficiently, but also not be affected by the structure and length of line. fault earthed resistance 、 fault type 、 system impedance and can locate fault in adjacent areas accurately

    論文深入地分析了高壓線路故障暫態電流行波的波折、反射過程以及折、反射系數的特點，提出了新的單端行波故障測距方法，它不僅能夠有效地識別出測距所用的反射波，而且幾乎不受線路結構、長短、故障接地電阻、故障類型、系統阻抗的影響，在近區仍可以準確地進行測距；同時模擬阻波器的特徵，設計了低通數字濾波器，對通過了低通數字濾波器的暫態故障電流行波再次進行小波分析，並利用本文提出的單端行波故障測距方法進行故障定位，結論是所提出的測距方法在實際應用中仍是有效的。
  9. However, the septic tanks and soakaway systems of some villages such as lam tsuen in tai po which are located within water gathering grounds are incapable of removing all pollutants from the sewage. to safeguard the potable water resource and to protect public health, the epd and the water supplies department have set more stringent water quality standards for the water gathering grounds. in addition, development projects in these areas are subject to tighter control in order to protect the potable water resource from any adverse effect from sewage

    但由於某些村落，例如大埔林村位處于食用水集水區內，而現時一般的化糞池及滲水系統又未能完全去除污水中所有的污染物，故環保署與水務署在保障食水安全及市民健康的大前提下，為各食用水集水區制定了較嚴謹的水質標準以保障集水區的水質，並通過謹慎處理區內的各個發展項目，以防止污水的排放對附近水源產生不良的影響。
  10. The merits of single terminal fault location are its reliability and its accuracy is n ' t affected by the type of line, fault resistance and two sides systems theoretically but this method has problems such as the identification of reflection wave and the unidentifiable area of reflection nearby which are research purpose and core of this paper

    單端行波故障測距方法的優點是其可靠性和精度在理論上不受線路類型、故障電阻及兩側系統的影響，但單端行波故障測距方法存在反射波的識別問題，且在近區還存在無法識別反射波區域。這就是本文的研究目的和中心。
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