雷擊過電壓 的英文怎麼說

中文拼音 [léijīguòdiànyā]
雷擊過電壓 英文
lightning overvoltage
  • 雷 : 1. （雲層放電時發出的響聲） thunder 2. （軍事上用的爆炸武器） mine 3. （姓氏） a surname
  • 過 : 過Ⅰ動詞[口語] （超越） go beyond the limit; undue; excessiveⅡ名詞（姓氏） a surname
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 壓 : 壓構詞成分。
  • 雷擊 : be struck by lightning; thunderstrike; [地球物理] lightning stroke
  • 電壓 : voltage; electric tension; electric voltage
  1. The shorter the interval between the two pulses of the current wave, the fewer strikes the varistors can endure. at the same time, the dc ljima changes fast - slowly - fast alone with the experiment continuing. microstructual disorder, such as variations in the height of the electrostatic potential at grain boundaries and electrode protrusions into the zinc oxide varistors, causes substantial temperature rise in a microscopic region around the defect and is the source for failure

    雷電的多重閃擊對雷電過電壓保護器件的影響更加嚴重，本文首次採用不同間歇時間雙脈沖電流沖擊對氧化鋅電阻進行了多次試驗，試驗表明：氧化鋅電阻在雙脈沖電流沖擊下更容易出現老化破壞現象，間歇時間越短，電阻能耐受的沖擊次數越少；此外，直流u _ （ 1ma ）值隨沖擊次數的增加具有快一慢一快的下降過程。
  2. Measuring of lightning parameters is the base work of lightning research. it is very important for researching the lightning characteristics, analyzing the accident of lightning, identifying the responsibility of lightning strike outage accident and discussing the strategies of lightning protection. it also can provide precise original data of atmosphere over - voltage for designing insulation co - ordination

    雷電流參數的測量是進行雷電研究的基礎工作，對于研究雷電特性、分析雷害事故、鑒定雷擊跳閘事故責任、探討防雷對策及為絕緣配合設計提供精確的大氣過電壓原始數據均具有十分重要的意義。
  3. Obtained by emtp program and the egm, this paper studies on lightning protection performance on 500kv double circuit transmission line the distributed parameter model of tower is built when analyzing the back stroking lightning protection performance for double circuit line, it can truly reflect the spreading course of lightning current on the tower, furthermore, considering the randomness of working voltage ' s phase when lightning strokes the top tower and supposing the probability of lightning appearing arbitrary phase in a cycle of ac is equal, this paper brings forward the statistical method to calculate the rate of back stroking on double circuit line

    本文利用emtp程序、擊距法對500kv同桿雙回線路的耐雷性能進行了研究。在分析同桿雙回線路的反擊耐雷性能時，建立了桿塔的分佈參數計算模型，此模型可以真實地反映雷電流在桿塔上的傳播過程。並針對雷擊塔頂時，導線運行電壓相位角的隨機性，本文假定雷擊出現于交流一周期的任一角度區間內的概率相等，提出了利用統計法計算同桿雙回線路的反擊跳閘率。
  4. Schneider electric launchs new fixed spd - st series product in april 2005. the new product can be used in tt and tn system

    電涌保護器的作用主要是限制電力系統中的雷擊過電壓和部分的操作過電壓。
  5. With the demonstration of 35kv line of youxian substation, it built a numeral value calculation model of on - line data of each pole. in terms of many factors, it studied on how to improve lightning withstand level, especially on how to use moa economically and reasonably, and on the synthetic measures to decrease the lightning tripping outrage

    在考慮眾多影響因素的基礎上，對雷擊35kv線路時雷電過電壓進行數值計算，通過大量的數值模擬計算，研究如何提高其耐雷水平，特別是研究線路型避雷器經濟合理的使用，以及降低雷擊跳閘率的綜合處理方法。
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