flashover voltage 中文意思是什麼

flashover voltage 解釋
火花放電電壓
  • flashover : 【電學】飛弧，閃絡，跳火。
  • voltage : n. 【電學】電壓，電壓量，伏特數。 the working voltage （電氣的）耐壓限度。
  1. On the test investigation, a lot of flashover tests are made in 10kv, 35kv and 63kv voltage condition on post insulators and suspensor insulators, including all conditions covered with snow or ice. which included different environment temperature, different melted ice and melted snow etc multi - condition

    試驗中，對不同冠雪量、不同覆冰量、不同溫度及不同融冰、融雪等多種情況，環境溫度在零上幾度，零下十幾度到幾十度等不同情況進行了試驗。
  2. The main tests and researches are as following : to study the ac flashover characteristic of composite insulator in different icing states by imitating tests in multifunctional artificial climate chamber, and analyze the effect of ice amount and icing water conductivity on flashover voltage, put forward a flashover mechanism by analyzing the icing flashover process. to study the ac flashover characteristic of composite insulator in different altitude and icing states together by imitating tests in multifunctional artificial climate chamber, and mainly analyze the effect of altitude ( air pressure ) and ice amount on flashover voltage, and investigate the flashover mechanism. to investigate the effect of high altitude and icing on the hydrophobicity of composite insulators

    本文主要進行了以下試驗研究： 1 ）在多功能人工氣候室里模擬不同覆冰程度下合成絕緣子的交流閃絡特性，主要分析覆冰量和覆冰水電導率對閃絡電壓的影響，並對其覆冰閃絡過程進行機理分析； 2 ）在多功能人工氣候室里模擬不同海拔高度和覆冰程度綜合作用下合成絕緣子的交流閃絡特性，主要分析海拔高度（即氣壓）和覆冰量對閃絡電壓的影響，並進行閃絡機理分析； 3 ）研究高海拔和覆冰對合成絕緣子憎水性的影響。
  3. Test results indicated : with the hoist of altitude, the increase of ice amount and the rise of pollutant, the average flashover voltage reduced. the character exponent generally depends on the insulator profile, ice amount, ice state and pollution severity etc. by means of a high - speed camera, a data acquisition system and high voltage test facilities, a series of the flashover processes on ice surfaces were record. the experimental results form this study and the subsequent theoretical analyses suggested : the thermal ionization of the air in front of an arc root resulted in arc movement ; the electrostatic force had an auxiliary effect of impelling arc propagation ; the electrical

    通過對攝像機、數據採集系統及高壓試驗裝置記錄覆冰絕緣子表面閃絡電弧的發展過程的試驗結果進行理論分析得出：弧根周圍空氣的熱電離導致了電弧的發展，靜電場力對電弧的發展起到了加速作用，電擊穿僅發生在閃絡最終的跳躍階段；通過測量閃絡過程中的放電電壓、泄漏電流、閃絡時間、覆冰水電導率、電弧長度及電弧半徑等參數，得到了不同階段電弧（電弧起弧階段、電弧發展階段及完全閃絡）的發展速度、臨界電弧長度均隨覆冰水電導率的增加而減小。
  4. The factors which influenced the process include the insulator ' s material, structure, the distribution of space electrical field, the way to deal with the surface, the characteristic of voltage waveform, pulse width etc. there are two kinds of theory for the vacuum surface flashover : secondary electron emission avalanche ( seea ) and electron triggered polarization relaxation ( etpr )

    影響該過程的因素包括絕緣材料結構、空間電場分佈、表面處理方法、所加電壓特徵，脈沖寬度等。研究真空表面閃絡過程有兩類理論：二次電子發射崩潰（ seea ）和電子引發極化鬆弛（ etpr ） 。
  5. All the transmission lines of west - east electricity transmitting project are inevitable to crossing the high altitude and icing areas. for the reducing of the air pressure and the absolute humidity, the electricity strength of insulators will drop obviously. therefore, it must be considered the effect on the insulators " flashover voltage caused by the change of altitude and ice when the insulation cooperation of transmission lines are being designed

    「西電東送」工程的所有輸電線路都不可避免的要經過高海拔和覆冰地區，由於大氣壓力和絕對濕度的降低會使絕緣子的電氣強度顯著下降，因此在進行輸電線路的絕緣配合設計時必須考慮到海拔高度和覆冰的變化對絕緣子的閃絡電壓影響。
  6. The main work and conclusion for this paper is as following : according to the flashover test results of several kinds of iced insulators under positive voltage and negative voltage, this paper obtained : for the single porcelain insulator, the single glass insulator and the composite insulator bridged completely by icicle, the metal cathode ' s strong ability of emission electron is the primary reason that results in the lower negative flashover voltage ; the position difference of the high resistance district in method anode side results in that porcelain insulator cluster and glass insulator cluster have an evident effect of polarity ; when less ice and no icicle at the brim of the sheds, due to numerous non - polar arcs on the composite surface, the effects of polarity of composite insulator was lost using the test method of the average flashover voltage in the freezing period, dc flashover performances were investigated of several insulators with some typical structures and different material

    本文的主要工作和結論如下：在人工氣候室內，根據不同覆冰絕緣子正、負極性下的閃絡試驗結果，得出負極性電弧金屬陰極的強電子發射能力造成了單片瓷、玻璃絕緣子及被冰凌橋接的合成絕緣子有較低負極性冰閃電壓；正極性電弧金屬陽極側產生高電阻區所處位置的差異使得瓷和玻璃絕緣子串具有明顯的極性效應；覆冰較少時，合成絕緣子表面出現數量較多的非極性電弧使合成絕緣子無極性效應。利用覆冰期內平均閃絡電壓的試驗方法，對不同材質和結構的絕緣子在覆冰、低氣壓和污穢共存環境中的直流閃絡特性進行了研究。試驗結果表明，直流平均閃絡電壓隨著海拔的升高、覆冰量的增加以及污穢度的增加而降低，且其特徵指數與絕緣子結構、覆冰量、覆冰狀態、污穢度等有關。
  7. Surface flashover across the insulators in vacuum is the major limitation of the performance of the high power system, such as high power microwave tube, pulse power switch, high - energy linear accelerator, etc. flashover studies are of considerable importance in many applications. alumina ceramics are used widely in vacuum insulation system. the flashover and charging performance have been systematically investigated on alumina ceramics in vacuum under pulse voltage ( 0. 7 / 4 ^ 8 )

    真空中絕緣子沿面閃絡現象是制約高功率微波管、脈沖功率開關、高能粒子加速器等系統性能的主要原因，這是因為真空中絕緣子在一個比自身及相同真空間隙擊穿電場低得多的電場下就發生了表面閃絡的緣故，研究真空中絕緣子沿面閃絡現象及其形成機理對于改善和提高系統性能有重要意義。
  8. The insulation characteristic of insulator in vacuum is researched in the process of the high voltage breakdown along the insulator surface in vacuum, which is called vacuum surface flashover

    絕緣子的真空表面絕緣特性研究真空下的高壓沿絕緣子表面擊穿物理過程，稱真空表面閃絡過程。
  9. The main contributions to the study on the flashover of insulators in vacuum are as follows : 1. a set of test system for the studies on flashover of insulators in vacuum has been developed, which consists of vacuum system, electrode system, e - dot pulse voltage measurement system, surface charge measurement system, current monitor system and luminescence signal measurement system

    本文主要完成了以下工作： 1 .通過設計加工真空及試驗電極系統，研製e - dot沖擊電壓測量系統、真空中表面電荷測量系統、沖擊電流和表面微弱光信號測量系統，建成了國內第一套用於研究真空中絕緣子沿面閃絡現象的試驗平臺。
  10. The conical insulator high 15 cm, the diameter of top is 5cm and that of the bottom is 35cm. the insulator is operated for more 300 times on voltage more 600kv, and maximum voltage is 750kv. the operated is stability and no surface flashover phenomenon is happened

    錐形絕緣子高15cm ，錐底直徑35cm ，錐頂直徑5cm ，實驗結果表明滿足設計要求，在600kv以上工作300多次，最高電壓達750kv ，運行穩定，未發生沿表面閃絡現象。
  11. The advantage and disadvantage of two kinds of principle of the external insulation configuration using contamination tolerance voltage and the rate of distance of voltage creepage is analyzed. the principles and measures of external insulation configuration of power transformation device is put forward at the present time. the technical measure against contamination flashover of power transmission and transformation device in electric network in south of hebei province is studied and determined

    分析了利用污穢耐受電壓或爬電比距選擇外絕緣配置這兩種原則的優勢和存在的問題，提出了現階段輸變電設備外絕緣配置原則和措施，研究制定了河北南網輸變電設備防污閃技術措施。
  12. The paper studied withstand voltage level, influence factors, breakdown process and breakdown mechanism of covered with snow or ice through some theory calculation results, many test data and phenomena. the paper got the conclusions that withstand voltage strength of insulator covered with snow or ice descended largely, and the amount of ice or snow build - up, number of flashover, string length, environment temperature and leak current etc had obvious effects on flashover voltage values of insulators

    通過大量的試驗數據和現象研究冰雪條件下絕緣子的耐壓水平、影響因素及其擊穿機理，如串長的影響、環境溫度、絕緣子形狀及冰的干濕程度、閃絡次數、冠雪量和積冰量的影響、雪的密度、氣壓和濕度的影響等，並對試驗結果與理論分析結果進行了對比，分析其是否一致。
  13. The study results show that the minimum ac flashover voltage decreases with the increase of the ice amount accreted on the insulator surface by an exponential law, and the down - trend of the minimum ac flashover voltage will slow gradually with the bridging of the shed of the insulators by icicles, both the average saturated ice amount and the special exponent m of effect of ice amount for different insulators depend on the radius of shed and the air - gaps of the sheds of the insulators, and that the ac ice flashover voltage decrease with the decrease pressure ratio p / p0 ( rise of the altitude ) by power - law for different esdd and icing - states when the altitude is from 4000m to 5500m. the special exponent n, which show the effects of altitude on the flashover voltage, is various with the type of insulator, icing - states and the surface status of iced insulator etc., and that the minimum ac flashover voltage of iced insulators decreases by power - law with esdd or the freezing water conductivity for different ice amount and atmospheric

    研究結果表明：在不同海拔高度和等值鹽密esdd下，絕緣子的最低交流冰閃電壓均隨覆冰量的增加而呈指數規律降低；當覆冰量增加到一定程度后，最低交流冰閃電壓隨覆冰量增加而降低的趨勢趨于飽和；不同絕緣子串的平均飽和覆冰量及閃絡電壓的覆冰量影響特徵指數m均與絕緣子的盤徑和傘距等因素有關；在海拔4000 5500m之間，不同等值鹽密esdd和覆冰狀態下，絕緣子的交流冰閃電壓隨海拔高度的增加（氣壓的降低）與p / p0呈乘冪關系降低，氣壓影響特徵指數n與絕緣子類型、覆冰類型、覆冰表面狀況等因素有關；當覆冰量和氣壓一定時，絕緣子的最低冰閃電壓均隨著等值鹽密（ esdd ）或覆冰水電導率的增加而呈乘冪關系降低，並逐漸趨于飽和。
  14. The contribution of the paper can conclude as following : according to the laboratory investigations carried out on the ac flashover performance of two types of porcelain insulators and four types of composite insulators at the atmospheric environment of low pressure at a high altitude with pollution and icing, the relations between the minimum ac flashover voltage and the ice amount, the atmospheric pressure as well as the contamination level are obtained

    本文研究的主要工作和結論如下：根據不同絕緣子在人工氣候室內模擬海拔3500m以上低氣壓下覆冰和污穢共存環境中的交流閃絡特性的試驗研究結果，得出了最低閃絡電壓與覆冰量、海拔（低氣壓）和污穢度等因素之間的規律。
  15. Based on a series of tests and investigations, this paper draws some conclusions as following by processing and analyzing the test data. the minimum icing flashover voltage of composite insulators decreases with the increase of ice amount, and the tendency of it accords with exponential function. however, the relation of the minimum icing flashover voltage with icing water conductivity accords with power function

    通過大量的試驗研究工作，對試驗數據進行擬合和分析處理，得到了如下結論： 1 ）合成絕緣子最低冰閃電壓隨覆冰重量的增加而降低，且其下降趨勢符合指數函數規律，與覆冰水電導率的關系符合冪函數規律。
  16. Based on a great of laboratory investigation carried out on the ac flashover performance of several types of insulators in the multi - function artificial climate chamber of chongqing university, this paper studies systematically the ac flashover performance of several type of insulators and puts forward a flashover voltage correction method for the atmospheric environment at altitude of 3500 m above, and discusses the flashover process and mechanism of the iced insulator

    本文在國內外現有研究成果的基礎上，通過大量的人工氣候室模擬試驗研究和理論分析，對海拔3500m以上地區覆冰和污穢絕緣子的交流閃絡特性及閃絡電壓的校正方法進行了系統研究，並對覆冰合成絕緣子的閃絡過程和機理進行了初步探討。
  17. A lot of observation and reports in the world indicated that flashover voltage of insulator covered with snow or ice descended obviously

    國內外大量試驗觀察和報告表明，冰雪條件下絕緣子的閃絡電壓明顯下降，對電力系統危害極大。
  18. So there is important implication value and academic value to systemic investigation of the effect of the existence of air gap to the flashover voltage along the ice - covered insulators

    因此，深入、系統的研究空氣間隙中的放電活動對絕緣子串閃絡電壓的影響有著重要的工程應用價值和學術意義。
  19. On basis of the analysis of the flashover processes in three kinds of icing states, it gives out the flashover mechanism of icing composite insulators and points out the minimum icing flashover voltage is related to the icing states

    2 ）通過對覆冰絕緣子三種覆冰狀態下閃絡過程的分析，提出了覆冰合成絕緣子的閃絡機理，並得到合成絕緣子的閃絡電壓與覆冰狀態有關。
  20. According to secondary electron emission avalanche ( seea ) theory, the effects of insulating materials, shapes, electrode structures of vacuum insulator on surface flashover and its mechanism, design optimization methods for vacuum insulator to improve surface flashover voltage by selecting insulating material, shape and electrode structure are reviewed

    摘要根據二次電子發射崩（ seea ）理論，綜述了真空絕緣子的絕緣介質材料、幾何形狀和電極結構對絕緣子沿面閃絡的影響和機理過程，以及從這三方面優化設計真空絕緣子以提高其沿面閃絡電壓的方法。
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