insulation fault 中文意思是什麼

insulation fault 解釋
絕緣不良
  • insulation : n. 1. 隔離，孤立。2. 【物理學】絕緣，絕熱。
  • fault : n 1 過失，過錯；罪過，責任。2 缺點，缺陷，瑕疵。3 （獵狗的）失去嗅跡。4 【電學】故障，誤差；漏電...
  1. Analysis of ungrounded neutral ac electric network insulation fault

    中性點不接地交流電網絕緣故障分析
  2. Utilising dissolved gases analysis, a new insulation fault diagnosis method for power transformers is proposed. this method is based on the group grey relational grade analysis method. first, according to the fault type and grey reference sequence structure, some typical fault samples are divided into several sets of grey reference sequences. these sets are structured as one grey reference sequence group. secondly, according to a new calculation method of the grey relational coefficient, the individual relational coefficient and grade are computed. then according to the given calculation method for the group grey relation grade, the group grey relational grade is computed and the group grey relational grade matrix is structured. finally, according to the relational sequence, the insulation fault is identified for power transformers. the results of a large quantity of instant analyses show that the proposed method has higher diagnosis accuracy and reliability than the three - ratio method and the traditional grey relational method. it has good classified diagnosis ability and reliability

    基於變壓器油中溶解氣體分析，提出了一種基於群灰色關聯度分析的變壓器絕緣故障診斷新方法.首先根據故障類型與灰色參考序列構造，選擇變壓器典型故障樣本構造多組參考序列，這些參考序列組構成一個灰色參考序列群.其次根據給出的新的關聯系數計算方法，計算個體關聯系數和關聯度.然後根據給出的群灰色關聯度計算方法，計算群灰色關聯度和構造群灰色關聯度矩陣.最後根據關聯序識別變壓器絕緣故障診斷.通過大量變壓器絕緣故障診斷實例分析，所提方法診斷準確性與可靠性優於三比值法和傳統的灰色關聯分析方法，具有較好的分類診斷能力和可靠性
  3. The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance

    爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。
  4. The fault diagnosis system includes four parts : sampling and insulation of the synchronous signal, sampling of the voltage waveform of the rectifier, logic pre - processing and dft analysis, display and alarm circuit

    故障診斷系統主要包括同步信號的取樣與隔離、整流電壓的采樣、邏輯預處理及dft分析，診斷顯示報警電路等四部分。
  5. A novel measurement and control system ( mcs ) used in hv flameproof switchgear has been established based on the 80c196kb single - chip microprocessor, by which electrical faults such as short circuit, over - load, over - voltage, open circuit, earth leakage and so on can be automatically distinguished and processed, and with the exception of this, the insulation degree of the double screen cables is monitored on - line. the operating condition and fault parameters can be displayed in turn with liquid crystal display

    該系統能自動判斷短路、過載、過壓、欠壓、漏電等故障，並對高壓電纜的絕緣水平進行實時監測，大屏幕液晶顯示器實現了電太原理工大學碩士學位論文網參數的輪流顯示，通過撥碼盤輸入系統各項整定參數，真正實現了保護系統數字化。
  6. Common fault amp; preventive measures of construction quality of exterior insulation of external wall with eps panels

    板外墻外保溫的施工質量通病與防治
  7. Insulation fault detecting instrument

    絕緣損壞檢示儀表
  8. Based upon the cause analysis for the blackout fault of may 25, 2005 in moscow, it has become a necessary trend to break traditional management mode, adoptting advanced management technology, such as computerized equipment life cycle cost management system, integrated gis with on - line insulation monitoring system of electric equipment, and improving comprehensive management of electric equipment for safe production

    摘要在分析2005年5月25日莫斯科大停電事故原因的基礎上，提出電力企業要打破傳統的管理模式，採用先進的管理手段，提高設備綜合管理水平，構建發供電設備運行預警體系，促進安全生產。
  9. In accordance with the technological difficulties encountered in the process of insulation supervision based on the dissolved gases analysis ( dga ), several kinds of model and method are presented to improve the reliability and precision of fault diagnosis of the power transformer. main research content includes : by deeply studying the common transformer faults diagnosing methods, such as three - ratio methods and improved electrical committee agreements, several shortcomings such as uncertainness judgment when the fault reasons, phenomenon and principles come out together while can not consistent to each other etc. for this reason, the old methods can not fully meet the need to engineering practical application. considering fuzzy relationship matrix can fully represents the causality between fault symptoms and fault types, when diagnosing complex equipments with multiple symptoms and fault causes such as power transformer, a synthetic fuzzy diagnosing model is firstly proposed to diagnose transformer ' s insulation faults based on dga in this paper

    本文針對應用油中溶解氣體分析方法進行變壓器絕緣監督時所遇到的主要技術難點，提出了提高變壓器故障診斷的準確性、可靠性的幾種模診斷方法，主要研究內容有：通過對判斷變壓器故障常用的三比值法和改良電協研法的深入分析，其診斷準確率較高，但對故障原因、故障現象和故障機理間同時存在不確定性和模糊性的變壓器等電氣設備的故障診斷，難于滿足工程應用的需要；在處理變壓器等結構復雜設備的多癥狀、多原因故障診斷時，模糊關系矩陣可以全面反映這種癥狀與故障類型間的因果關系，進而提出了變壓器故障診斷的模糊綜合診斷模型；同時作者還深入分析了模糊運算元的特性；針對常用的模糊評判結果的模糊集的集化方法的不足性，提出了將模糊綜合診斷與模糊規則推理結合起來進行故障診斷的方法，能達到較好的效果。
  10. Secondly, been generalized the failure data of electrical connectors from working and testing environment, electric contact failure, insulation failure, mechanical connection failure and other failure are four mainly failure modes of connectors, moreover, built the faulty - tree to analyze their reliability level. however, contact fault failure was the most prevalent mode of electrical connectors. under natural working and reserving conditions, the contact stress decreasing, fretting and surface film growing are mainly reasons to make electrical connector failure

    其次，通過對現場、試驗場電連接器的失效情況進行統計和分析，總結出電連接器的四種主要失效模式：電接觸失效、絕緣失效、機械連接失效和其他失效，並對電連接器進行了故障樹分析，指出電接觸失效是電連接器失效的主要形式，而在正常的工作條件下，造成電接觸失效，即決定電連接器工作壽命的主要原因是氧化膜層的生長、接觸對磨損以及磨損腐蝕物的堆積，而影響氧化膜層的生長、接觸對磨損以及磨損腐蝕物堆積的主要因素是環境振動和溫度應力，為電連接器進行失效機理分析奠定了基礎。
  11. In the case of a line side fault, prevents the being propagated to the breaker. enables the circuit breaker ' s insulation in installations with insulated bus bars

    電源側發生故障的情況下防止電弧傳播到電路器上。在帶絕緣母體排的裝置里，使斷路器進行絕緣。
  12. Plenty of diagnosis examples demonstrate the validity of the gray relationship analysis method in diagnosing power system insulation faults. not only the misjudgment rate can be reduced, but also the transformer fault incidences can be classified by using self - adapted weight fuzzy clustering method. further more, the transformer insulation condition can be analyzed, as well as the fault position can be located by recognizing the fault types

    經過大量的診斷實例表明：本文的模糊綜合診斷與模糊規則推理結合起來的故障診斷方法對電力研究變壓器絕緣故障診斷是有效的，能大大減少錯判、誤判比率；自適應加權模糊聚類方法能對變壓器的故障樣本正確分類，同時能有效判別故障類型，診斷的準確性大大高於常用的三比值法。
  13. By taking a direct current on - line insulation monitor as an object the working principles and its structure of double - machine fault - tolerant system, in which 89c52 single chip computer is used as main machine is analyzed

    摘要以直流系統線在線絕緣監測儀為對象，分析了以89c52單片機為主機構成的雙機容錯系統的結構及工作原理。
  14. If there are high voltage cables running anywhere near the data cables, the potential for a fault condition exists as a result of insulation failures or inadvertent contact by an installer

    如果數據電纜附近有高壓電纜經過，在諸如絕緣失效、意外接觸設備，則會存在故障電勢。
  15. The research works are shown mainly as follows : 1 ) the actuality and outlook of on - line detecting and fault diagnosis technology of gases dissolved in oil are analysed deeply, and characteristics of insulation structure of power transformer, evaluation of operating reliability and the relationship between ordinary faults inside transformer and gases dissolved in transformer oil are studied too. analysing the purposes of detecting gases dissolved in transformer oil on - line, we can know that primary indexes to evaluate the technology of on - line detecting gases dissolved in transformer oil are reliability of system, accuracy of detected data, validity of diagnosis, automatization and price of systems

    主要研究內容有： 1 ）深入分析變壓器油中多種溶解氣體在線監測及故障診斷技術研究現狀及應用前景，研究電力變壓器絕緣結構特性、運行可靠性評估以及變壓器內部常見故障與油中溶解氣體對應關系，通過對在線監測變壓器油中溶解氣體的目的分析得出系統運行的可靠性、監測數據的正確性、診斷的有效性、系統的自動化程度、系統的價格等是綜合評價變壓器油中溶解氣體在線監測技術的指標。
  16. The status of hvdc insulation monitoring was analysed. the method and problems of earth - fault detection for hvdc system were analysed as well. the operation principle and features of a new type hvdc insulation monitoring system were introduced. a scheme of hvdc system earth - fault detection was presented

    分析了國內直流系統絕緣監測領域的現狀，就現有的直流系統接地故障檢測方法及存在的問題進行了分析；介紹了一種新型直流系統絕緣監測系統的工作原理及其特點，提出一種直流系統接地故障檢測的方案。
  17. The variety of voltage ratio reacts to not only the insulation status of transformer winding but also the fault of winding short

    變壓比是變壓器的重要參數，變壓比的變化與變壓器繞組的變化有密切的關系。
  18. Electrical safety in low voltage distribution systems up to 1000 v a. c. and 1500 v d. c. equipment for testing, measuring or monitoring of protective measures - equipment for insulation fault location in it systems

    不超過1000v交流和1500v直流的低壓配電系統電氣安全性.防護測量用試驗測量或監測設備. it系統絕緣失效定位設備
  19. Electrical safety in low voltage distribution systems up to 1000 v a. c. and 1500 v d. c. - equipment for testing, measuring or monitoring of protective measures - part 9 : equipment for insulation fault location in it systems

    不大於1000v交流和1500v直流的低壓配電系統的電氣安全.防護測量的試驗測量和監測設備.第9部分: it系統中的絕緣失效定位設備
  20. Electrical safety in low voltage distribution systems up to 1 kv a. c. and 1, 5 kv c. c. - equipment for testing, measuring or monitoring of protective measures - part 9 : equipment for insulation fault location in it systems

    最高可達1000 v交流電和1500 v直流電的低壓配電系統的電氣安全性.防護測量的試驗測量或監測設備.第9部分: it系統中絕緣失效定位設備
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