接地弧 的英文怎麼說
中文拼音 [jiēdehú]
接地弧
英文
arc ground-
According to the quickly adjustable characteristic of the peterson coil grounding system, this dissertation proposes a new control strategy. when the system is in operation, the strategy can limit the series resonance over - voltage by using the off - resonance method. when fault occurs, the strategy can conveniently suppressing arc by rapidly adjusting the inductance value of the peterson coil to the point, which the resonance with grounding capacitance of the power network is occurred
依據可控硅控制消弧線圈接地系統的快速可控性，一改傳統的電網正常運行時調節消弧線圈接近於全補償的預調諧方法，提出正常運行時採用脫諧方法抑制串聯諧振過電壓；故障時立即調節消弧線圈電感量達到與對地電容諧振，以利熄弧的新型調節原理和方法。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。Based on researching the function of every kind of eliminating arc loop, new concept was brought up in this paper, and the protective device for eliminating arc and overvoltage was researched and manufactured. when the arc light connecting the ground emerges, the chip synthesizing controller control the vacuum contacter which can be operated with dividing phase and make its fault phase earthed so that the arc light can be dissolved thoroughly
本文在研究各種消弧線圈的基礎上，提出全新的概念，研製出了消弧及過電壓保護裝置，該裝置在出現弧光接地時，通過單片機綜合控制器控制一組可以分相操作的真空接觸器，使故障相接地，達到徹底消除弧光的目的。It was found that the substrate floating potential changes a lot when the grounded state of arc source changed
在實驗過程中還發現弧源不同的接地方式對基片臺懸浮電位有很大的影響。Under typical discharge condition, the substrate floating potential is - 5v as the arc source is floated to the ground, but drops to - 60v in the case of the anode being grounded
在典型的放電條件下，當陽極接地時，基片臺懸浮電位最高達- 60v ，而當陰極接地或弧源懸浮時，該電位通常只有- 10v左右。With this grounding method, the inductance value of the peterson coil can be adjusted quickly and continuously in real time
採用這種接地方式，消弧線圈的電感量具有快速、連續可調節性。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。Then the idea of integral control of automatic resonance and single - phase earth faulted line selection was put forward
並在此基礎上給出了補償電網中消弧線圈自動調諧與單相接地故障選線一體化的綜合控制思路。Arc detect and continuity check as additional features
附加電弧偵測及連續接地確認In order to obtain similar deposition condition, very different bias must be applied to the substrate when the grounding of the arc source is different. at last, carbon films were deposited and their properties were measured
分析了這種現象產生的原因以及不同接地方式對沉積薄膜的影響，即當弧源接地狀態不同時，要獲得相似的沉積條件，給基片臺施加的負偏壓應有所不同。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。These measures include installation of lightning lines, decrease of the tower grounding resistance as far as possible, the reasonable use of arc suppressing coils and adoption of arresters
處理方法包括加裝避雷線、盡量減低線路桿塔接地電阻值、消弧線圈的合理使用和採用線路型避雷器。Arc - grounding fault line selection is the paper ' s key point and innovative point about small current grounding power systems. a lot of simulations are made based on the change rule and the character of fault voltage, fault current. the simulation study declare that the use of the method of wavelet analysis can select the fault line when the arc - grounding fault take place, it will play a important directive role in the research of the protection equipment
對小電流接地系統電弧故障的選線模擬是本文的重點，也是一個創新點，本文從研究的角度，在深入分析電弧接地時故障電壓、電流的特點和變化情況的基礎上，進行了大量的選線模擬，模擬表明電弧故障時，小波分析方法也能準確地選出故障線路，這對研製高性能的接地保護裝置將起到重要的指導作用。China ’ s 10kv distribution systems are almost grounded via the arc - suppression coil or not grounded systems
我國10kv配電網大部分是中性點經消弧線圈接地系統或者中性點不接地系統。Abstract : the image of arc zone of flux - cored underwater wet welding was developed with underwater ccd camera system and composed filter technology. the discussion is mainly focused on the theory of edge detection. an image edge detection method based on median filter and grads algorithm was developed to detect the arc burning zone and arc bubble zone efficiently, which laid the foundation for further analysis of underwater wet welding arc mechanism and process control
文摘:通過復合濾光技術和水下ccd攝像系統，採集出了藥芯焊絲水下濕法焊接電弧區域圖像，重點論述了邊緣檢測理論，確定了基於中值濾波和梯度運算元的電弧區域圖像邊緣檢測方法，有效地區分了電弧燃燒區域和電弧氣泡區域，從而為水下濕法焊接電弧的機理分析及水下焊接過程式控制制奠定了基礎。In mode selection of middle and large capacity units nowadays, there mainly have two types of peterson coil grounding and distribution transformer with resistor
在現有大中型發電機中性點接地選擇上，主要有消弧線圈接地方式和接地變高阻接地方式。Along with the development of power network transmissed in our country, the internal electric power net in industry and enterprise and the electric power sesytem on generating electricity and power supply, the overvoltage phenomena in the electric power sesytem becomes more and more serious
隨著我國電網系統的發展，電力系統中的過電壓現象越來越嚴重，尤其隨著電纜線路逐漸代替架空線路，電容電流不斷增加，弧光接地現象更是不可避免。It has been proved by test results that this protective method is suitable not only for neutral point insulated system, but also for neutral point grounded system through arc suppression coil
實驗結果表明：該保護原理不僅適用於中性點絕緣的供電系統，而且適用於中性點經消弧線圈接地的供電系統，提高了選擇性漏電的動作可靠性，保證了動作值的穩定性。It depends on many factors. in our country, middle and low voltage distribute net system uses non - direct - grounded system including no - grounded system and anti - arc system
我國中低壓配電網多採用小電流接地系統，即中性點不接地或者經消弧線圈接地。After the neutral point is grounded through perterson coil, it can decrease the capacitor current through fault point and the over - voltage caused by the grounding fault, which is advantage for the extinguishments of electric arc
中性點經消弧線圈接地后，有效減小了流過故障點的電容電流，減小了弧光接地過電壓，有利於電弧熄滅。分享友人