line of traction 中文意思是什麼

line of traction 解釋
力線
  • line : n 1 線；繩索；釣絲；測深度用繩，捲尺。 a fishing line 釣魚線。 be clever with rod and line 會釣魚...
  • of : OF ＝Old French 古法語。
  • traction : n 拖曳，拖拉，牽引；牽引力；〈比喻〉吸力，魅力；【醫學】（對于肌肉等的）牽引（術）；〈美國〉市內...
  1. After analyzing several kinds of protection for feeder line in subway dc traction power supply system, it is pointed out in the paper that the phenomena of refusing action and error action can not be avoided with existing protection which can not protect the whole feeder line

    摘要分析了地鐵直流牽引供電系統中幾種常用的饋線保護類型，發現現有的保護方法很難避免跳閘保護拒動或誤動現象的發生，並且不能保護饋線的全長。
  2. Two kinds of new on - line monitoring methods, which are based on measuring primary, secondary currents and voltages to calculate the short - circuit reactances of windings for detecting the deformation windings of power transformer, are proposed in the paper. the methods used for on - line measuring the short - circuit reactances of traction transformer in electric railways, are designed

    本文提出了兩種在線監測變壓器繞組變形的方法，通過在線監測變壓器繞組原、次邊的電壓和電流量，實時計算變壓器繞組的短路電抗來判斷變壓器繞組變形情況，並對電氣化鐵路主要接線型式的牽引變壓器繞組變形的在線監測方案進行了設計。
  3. Through the illustration of the short - circuit test method and through the analysis on final data of the catenary line for dc traction system of shenzhen metro vehicles, it is shown both the set values for the short - circuit calculation and the equipment selection are correct

    通過對深圳地鐵直流牽引系統接觸網短路試驗方法的闡述及最終數據的分析，表明短路計算整定值和設備選擇的正確性。
  4. Practice of traction substation combined automation system of shanghai metro line no

    淺議上海軌道交通9號線牽引降壓變電所綜合自動化系統的實現及其主要功能
  5. Tangyin substation is an important substation which has two transformer of 120mva, eight 220kv lines and three 110kv lines. tangqian line is a 110kv line specially for traction transformer substation. because traction load is high - power nonlinear and asymmetry. it will produce much harmonic and negatvie sequence current, which have done harm to compensation capacitors of tangyin substation. in recent years, the tang6c capacitor often interrupted and in 2001 july the tang7c capacitor ' s discharge pt exploded

    湯陰變電站是豫北一座樞紐變電站，有2臺120mva的主變， 8條220kv線路和3條110kv線路，其中的湯牽線是專為牽引變電站供電的110kv線路。由於電力機車屬于大功率的非線性負荷，且三相不對稱，在其運行過程中必然會產生較大的高次諧波和負序電流。
  6. Calculation and analysis of traction power grade for qingzang railway line

    青藏鐵路牽引動力功率等級的計算與分析
  7. The characters of traction power supply system and the problems of routine designs in the electrify railroads are described in chapter two where two main methods of optimize design in former traction power supply systems are emphasized, which realize the optimize methods of traction power supply system by using network multiple address selecting technique, and based on traction load along line distributing function, furthermore construct the optimization mathematical model ' s optimize method of traction power supply system by means of mathematical planning method ' s application

    優化設計是近年來發展起來的一項新技術，已經在工程設計的一些領域中得到了廣泛應用。本文通過對優化設計技術在電氣化鐵路牽引供電系統應用這一課題進行研究，以期為牽引供電系統在實際工程設計中提供一種新的使用方法。通過分析電氣化鐵路牽引供電系統的特點和常規設計中存在的問題，闡述了牽引供電系統優化設計的兩種主要方法。
  8. The two rails are not only signal lines of track circuits, but also loop current line of locomotive traction current in electrified railway block

    在電氣化鐵路區段，兩條鋼軌既是移頻信號的傳輸線又是機車牽引電流的迴流線。
  9. The content of this theme is as follows : without time, without open, without stopping railway transport, and without interrupting traction current of block tested, meanwhile track circuit parameters in electrical and no electrical blocks is measured of on - line, dynamic and real - time. these parameters include voltage of fsk signal, voltage of industrial and harmonic wave interference, upper frequency, lower frequency, carrier frequency and low frequency 18 messages frequency

    本課題研究內容：在不要點，不開天窗，不中斷行車，不中斷被測區段牽引電流的情況下，在線、動態、實時測量電化區段和非電化區段的移頻信號電壓、工頻干擾電壓，移頻信號（調頻信號）的上邊頻、下邊頻、載波頻率、以及低頻18信息頻率等參數。
  10. The target will not come true, even with good line or efficient traction, if the problems of brake are act solved well currently, we are usually puzzled by wheel flat, disc crack in brake system, which influence the quality of running badly

    制動問題如果沒有解決，即使有了高質量的線路，有了功率很大的牽引動力等，高速或者重載還是不可能實現的。目前我國運行列車制動裝置的破壞形式主要是踏面擦傷和制動盤裂紋，嚴重影響了運行質量。
  11. The basic principles of on - line insulation monitoring are analyzed, the on - line insulation monitoring system for traction substations is designed

    本文分析了絕緣在線監測的基本原理，設計、研製了牽引變電所絕緣在線監測系統，並投入了實際應用。
  12. More than two years of application of the designed system has shown that the apparatus has stable performance, satisfies site requirements and facilitates better automatic management and on - line equipment maintenance in traction substations

    兩年多的運行情況表明，該裝置工作性能穩定，滿足現場生產要求，為牽引變電所電氣設備實施狀態檢修和管理自動化創造了必要條件。
  13. The traction - free condition on the crack line is mended to get more accurate results. it can be expressed by a series of integral equations which can be discretized to a set of linear equations and then it can be solved easily. stress intensity factors ( sif ) are gotten through the root of the linear equations

    （ 2 ）推導了遠場應力、熱應力耦合作用下含夾雜裂紋體的應力強度因子求解公式，改進了體積力法中的裂紋面合力平衡條件，將應力強度因子的求解歸結為解一組積分方程，再將積分方程轉化為線性方程組進行數值求解。
  14. On steep loose climbs, choosing the right gear picking a good line are key factors. look ahead for sections of smooth rock or hard dirt for optimum traction

    如果遇到松滑的陡坡，關鍵因素在於選擇適當的齒輪比和前進路線，盡可能找到較平滑的石頭和較硬的泥土以確保有最佳的抓地力。
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