接地中點 的英文怎麼說
中文拼音 [jiēdezhōngdiǎn]
接地中點
英文
earthed neutral-
The selection of neutral - point earthing ways of the hydrogenerator of left - bank power station in the three gorges project should be related to one - point earthing protection of the stator of its generator within one hundred percent framework
三峽工程左岸電站水輪發電機中性點接地方式的選擇應和發電機100 %范圍定子一點接地保護相關聯。Its location marks it as a great divide as well as a link between central asia and south asia
它的地點標記它作為一個great . divide並且一個鏈接在中亞和南亞之間。But when fault was occurred, sometimes there would be great loss. for the reason, the paper put forward a microcomputer bus protection scheme suit for mv or lv power system with low current grounding based on the great researching about the working theory of current bus protections and the characteristic of mv or lv system with low current grounding. based on it, the paper has designed the platform of the hardware and the software programs
針對國內目前中、低壓電網大都未裝設母線保護裝置，發生故障不能及時切除時造成很大損失的狀況，本文在廣泛研究當前主流的母線保護動作原理並認真分析了中、低壓小電流接地系統特點的基礎上，提出了一套適合中、低壓微機母線保護裝置的研製方案，並據此選擇、搭建了硬體平臺，設計了軟體功能程序。The notable torsion effects of the surface ground motion above the alluvial valley are illustrated and the torsion effects become stronger as the frequency of the incidence is higher. ( 4 ) antiplane surface motion of the underground circular soft inclusion and the underground homogeneous soft interlayer is investigated in this paper. the results indicate : surface displacement amplitudes just above the soft inclusion of small depth - to - width ratio is amplified and soft interlayer of small depth - to - thickness ratio is amplified to a certain degree, and moreover, the latter is lower limit of the former
結果表明：垂直入射時，小深寬比軟夾塞上方地表位移幅值有較大的放大，小深厚比軟夾層的地表位移幅值也有一定的放大，且後者為前者的下限；波接近掠入射時，軟夾塞正上方地表點和軟夾層的中國地震局工程力學研究所碩士學位論文一地表位移幅值都沒有放大，而軟夾塞迎波面一側地表點的位移幅值會有一定的放大；軟夾塞上方的地表位移運動有較強烈的扭轉效應，且此扭轉效應隨入射波頻率的增高而增強。New designed auto tracing arc eliminating device based on this technique contents more technology, which has sample circuit, wide tuning scope, quick response and low noise. this paper firstly introduces neutral grounding histroy. by analyzing the syntony grounding theory, the transient and stable process of one - phase grounding fault, the threaten to secure run of power system and the importance of exact compensation for capacitive current are cognized
論文中首先介紹了中性點接地方式的發展過程，通過對諧振接地原理和單相接地故障的暫態、穩態分析，認識到接地故障對系統安全運行的危害，通過消弧線圈對接地電容電流的迅速準確補償是減小故障危害的最主要手段。According to the moving characteristics of tracklayer, when the vehicle is on ramp and the ground ' s vertical pressure is linear, the calculating formulas of relationship between the deviation of the instantaneous steering center, the position of vehicle ' s gravity, steering radius, moving velocity, moving acceleration, and vehicle ' s orientation, were obtained by the theory and method of vector analysis in mathematics and mechanics
摘要根據履帶式車輛的運動特點，運用數力學中矢量分析理論和方法，推導了接地比壓為線性分佈時履帶式車輛在斜坡上轉向時，瞬時轉向中心偏移量與車輛重心位置、轉向半徑、行進速度、加速度、車輛方位相互關系的計算公式。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The single - phase grounding fault frequently occurs in neutral ungrounded system, the fault line and fault location must be found to avoid a phase - to - phase short as soon as possible
單相接地故障在小電流接地系統中出現的比較頻繁，此時必須盡快找到故障線路以及大致的故障點，以避免兩相對地短路。Specification for neutral - to - earth resistance in distrbution system
配電系統中性點接地電阻器To resolve the situation that the sensitivity of present ground fault protection schemes is low for the large - sized hydro - generators, a kind of protection scheme based on the fault component of third - harmonic voltage and two kinds of protection scheme based on the fault component of zero - sequence voltage at the terminals and neutral are developed, and they can obtain higher sensitivity and reliability and provide 100 % protection for the stator windings. the influence of noise on the stator ground fault protection based on the local modulus maximum of wavelet transform is analyzed
針對目前大型水輪發電機定子繞組單相接地保護靈敏度偏低的問題，通過分析單相接地故障后機端和中性點零序電壓的變化特點，提出了一種基於機端和中性點三次諧波電壓故障分量和兩種基於機端和中性點零序電壓故障分量的高靈敏度、高可靠性保護方案，並實現定子繞組的100 %保護。On the grounding manners of neutral point in distribution networks
關于配電網中性點接地方式的探討Choice of grounding method of neutral point in high voltage distributing net
高壓配電網中性點接地方式的選擇Small current grounding power system is a popular neutral grounding mode around the world and is widely used in our country
配電網中性點採用小電流接地在世界范圍內是一種較流行的接地方式，並在我國配電網中得到了廣泛應用。Therefore, the conclusion is valuable to engineering apply, and could be consulted for the selection of the neutral point grounding mode of the civic 10kv network
得出的這些結論具有相當的工程實用價值，為大城市10kv電網中性點接地方式的選擇提供了一定的參考依據。Wavelet analysis theory and its application in power system have been introduced briefly. this paper gives a general overview of various neutral grounding modes. some existing theories schemes on the fault line selection have been summarized systematically
文中簡要介紹了小波分析的理論基礎及其在電力系統中的應用現狀，概述了配電網中性點各種接地方式的優劣，系統歸納了現有的各種選線原理和方案的特點，提出了尚需解決的問題，並給出了分析的結論。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。The node that articu - lates designs beam column, can bear larger step in curved rules, the curved distance of sus - pension column is little, suits the building on soft land base
樑柱鉸接的節點設計，能承受更大的跨中彎矩，柱腳彎距小，適合於軟土地基上的建築物。In any situation whatsoever and wheresoever occurring and whether existing or anticipated before commencement of or during the voyage, which in the judgment of the carrier or the master is likely to give rise to risk of capture, seizure, detention, damage, delay or disadvantage to or loss of the ship or any part of her cargo, or to make it unsafe, imprudent, or unlawful for any reason to commence or proceed on or continue the voyage or to enter or discharge the goods at the port of discharge, or to give rise to delay or difficulty in arriving, discharging at or leaving the port of discharge or the usual or agreed place of discharge in such port, the carrier may before loading or before the commencement of the voyage, require the shipper or other person entitled thereto to take delivery of the goods at port of shipment and upon failure to do so, may warehouse the goods at the risk and expense of the goods ； or the carrier or the master, whether or not proceeding toward or entering or attempting to enter the port of discharge or reaching or attempting to reach the usual place of discharge therein or attempting to discharge the goods there, may discharge the goods into depot, lazaretto, craft, or other place ; or the ship may proceed or return, directly or indirectly, to or stop at any port or place whatsoever as the master or the carrier may consider safe or advisable under the circumstances, and discharge the goods, or any part thereof, at any such port or place ; or the carrier or the master may retain the cargo on board until the return trip or until such time as the carrier or the master thinks advisable and discharge the goods at any place whatsoever as herein provided ； or the carrier or the master may discharge and forward the goods by any means, rail, water, land, or air at the risk and expense of the goods
四、不論任何地方任何情況，不論是在開航前或航程中存在或預料到的，只要承運人或船長認為可能有導致捕獲、扣押、沒收、損害、延誤或對船舶或其貨物不利或產生滅失，或致使起航或續航或進港或在卸貨港卸貨不安全、不適當、或非法，或致使延誤或難于抵達、卸載或離開卸貨港或該港通常或約定的卸貨地，承運人可在裝貨或開航前要求發貨人或與貨物權利有關的其他人在裝貨港口提回貨物，如要求不果，可倉儲貨物，風險和費用算在貨主頭上；承運人或船長，不論是續航至或進入或企圖進入卸貨港，或抵達或企圖抵達港口通常的卸貨地，或企圖在此卸貨，也可將貨物卸在倉庫、檢疫站、駁船，或其他地方；船舶也可續航或回航，直接或間接地，抵達或停留在船長或承運人在此情況認為安全或適當的任何港口或地點，全部或部分將貨物卸在此港口或地點；承運人或船長也可將貨物留在船上，直到回航或直到承運人或船長認為適當時將貨物卸到本合同所規定的任何地方；承運人或船長也可卸貨並將貨物用任何交通工具，經鐵路、水路、陸路、或空運轉運貨物，風險和費用算在貨主頭上。Moreover, the epiipc functions properly and stably under well due to the reasonable electrical circuit design and very strong anti - jamming design. this design successfully solves the directionally power current leakage fault action and reject action, and makes it working in both neutral point non - grounded and grounded through resistors or coils under compensate systems and over compensate systems
本次研製的保護器較好地解決了功率方向型漏電的誤動作和拒動作問題，使得它既能較好地運行在中性點不接地的系統中，又能用在中性點經消弧線圈接地的欠補償系統中，同時試用於過補償系統中。This paper presents two new electric system devices, a grounding and short - circuit fault indicator and an intelligent hybrid dc contactor. the fault indicator may be used in mid to high voltage power system
其中，短路與接地故障顯示裝置可用於檢測中、高壓電力系統短路或接地故障，該裝置具有強弱電隔離、安全性好、安裝方便、能耗低、成本低的特點。分享友人