接地中線系統 的英文怎麼說
中文拼音 [jiēdezhōngxiànxìtǒng]
接地中線系統
英文
earthed neutral system- 接 : Ⅰ動詞1 (靠近;接觸) come into contact with; come close to 2 (連接; 使連接) connect; join; put ...
- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 系 : 系動詞(打結; 扣) tie; fasten; do up; button up
- 統 : Ⅰ名詞1 (事物間連續的關系) interconnected system 2 (衣服等的筒狀部分) any tube shaped part of ...
- 接地 : [電學] landing; body; ground connection; electrical grounding; grounding; earthing; earth; ground...
- 系統 : 1. (按一定關系組成的同類事物) system 2. (有條理的;有系統的) systematic
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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。Users could incept real time video stream with pda through gprs anytime and anywhere, which validate the possibility of video transmission under the third mobile communication systems
用戶可以利用手持式設備- - - pda在任何時間,任何地點通過無線gprs網路實時接收視頻流;從而驗證了第三代移動通信系統中進行視頻通信的可行性。The system stores spatial data and characteristic data into central database, and provides services to users in server / client mode. as the research emphases of this thesis, several key sub - systems are designed and realized. the digital map input and maintenance subsystem performs format conversion, editing and updating of spatial data ; the rail - track video playing subsystem uses video recording as reference data, then plays, inquires and traces the corresponding frames in synchronous to the scaled mileage, realizing the query of the active picture frames ; the digital map query subsystem fulfills the map query, preview and spelling of digital map orthograph
其中,地形圖輸入與維護實現了數字地圖的格式轉換、編輯處理以及空間數據的更新操作,解決了不同格式空間數據的互相轉換問題;線路錄象播放將線路錄像數據作為系統的一種索引數據,活動影像的畫面與里程相對應,實現了基於線路錄像的播放、查詢和檢索的功能,實現了基於活動畫面的查詢檢索功能;數字地圖子系統完成了圖形查詢、數字地圖與線路正射圖像瀏覽、圖幅拼接等功能。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。The chip simulation network laboratory system this paper disguessed is a distribute network simulation system based on lan. the system ' s architecture is a c / s of three lays. the front platform are the chip simulation network system application program terminer ; the middle lay is a dcom server, it ' s duty is to deal with the communication and data transmission between the terminer and then database server, and to execute the logical operation. the application program just connect with the middle lay and get data from it, the connection and operation with database server will be managed by the dcom server. the duty of database server is to access and backup the final data
具體是由位於網路各個終端的晶元模擬網路實驗系統應用程序為前臺;中間層為dcom應用程序服務器,負責處理前臺應用程序與后臺數據庫的通信和數據傳輸,並執行業務邏輯,前臺應用程序只需要與應用程序服務器建立連接,在中間層操作數據即可,與后臺數據庫的連接和操作由應用程序服務器來統一管理操作。后臺數據庫只負責數據的存取操作。本論文實施的晶元模擬網路實驗系統模擬了主要的邏輯電路器件, 8088cpu ,存儲器,寄存器,數據總線,地址總線和控制總線,及其它相關晶元。Therefore, in december 2000 the bureau of transportation of taipei city government completed a feasibility study for an lrt system in the taipei shin - yi district. this study recommended the adoption of an lrt system with a standard track gauge, power supply from overhead wires, two or three cars per train, a length of 90m for platforms, a certificate system for fare payment, consideration of the possibility of using electronic sensor ticketing systems, type b right - of - way for at grade sections, and signaling control for passing priority at the intersections. the study also proposed an initial lrt line of 9. 6 kilometers in length with 9 stations
現代化輕軌運輸系統之運輸效能已較電車系統大幅提升,以一般採用b型路權為主,少部分a與c型路權之系統而言,每小時單向運能達到5 , 000至15 , 000人次,介乎高運量捷運與公車系統之間,適合擔負都會地區市郊與市中心區的聯絡路線、市中心區集散路線、鐵路與捷運系統接駁路線、都市周邊環狀線、特定區間(新市鎮)聯絡線、都會區次要運輸走廊運輸主軸等服務類型。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。On the other hand, boundary - scan technique intelligent fault diagnostic method was applied to practice. for most digital system, devices with boundary - scan architecture are broadly used. only using four line or five line to connect pc parallel port with cut tap ( test access port ), all the ptvs can be loaded to cut and all homologous prvs can be taken back to intelligent fault diagnosis system
至於本文採用邊界掃描測試故障診斷技術,是考慮到本系統的通用性和簡潔性,因為對于大多數數字系統而言,具有邊界掃描結構的器件己廣泛應用,本文只需4條或5條信號線就能將pc機和被測邊界掃描電路連接起來,由此極大地簡化了智能故障診斷系統中為實現ptvs加載和prvs獲取而專門設計的介面板電路。A novel dynamic evolutionary clustering algorithm ( deca ) is proposed in this paper to overcome the shortcomings of fuzzy modeling method based on general clustering algorithms that fuzzy rule number should be determined beforehand. deca searches for the optimal cluster number by using the improved genetic techniques to optimize string lengths of chromosomes ; at the same time, the convergence of clustering center parameters is expedited with the help of fuzzy c - means ( fcm ) algorithm. moreover, by introducing memory function and vaccine inoculation mechanism of immune system, at the same time, deca can converge to the optimal solution rapidly and stably. the proper fuzzy rule number and exact premise parameters are obtained simultaneously when using this efficient deca to identify fuzzy models. the effectiveness of the proposed fuzzy modeling method based on deca is demonstrated by simulation examples, and the accurate non - linear fuzzy models can be obtained when the method is applied to the thermal processes
針對模糊聚類演算法不適應復雜環境的問題,提出了一種新的動態進化聚類演算法,克服了傳統模糊聚類建模演算法須事先確定規則數的缺陷.通過改進的遺傳策略來優化染色體長度,實現對聚類個數進行全局尋優;利用fcm演算法加快聚類中心參數的收斂;並引入免疫系統的記憶功能和疫苗接種機理,使演算法能快速穩定地收斂到最優解.利用這種高效的動態聚類演算法辨識模糊模型,可同時得到合適的模糊規則數和準確的前提參數,將其應用於控制過程可獲得高精度的非線性模糊模型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。To avoid the serious electromagnetic interferer, the analog signals are transformed to frequency pulses which are transferred to the kernel of the system. in the measure of the groove voltage, the method of float - ground is adopted to avoid the high common signal and the range switch circuit is designed to solve the conflict of the wide dynamic range and the high precision. least square curvefit is adopted to reduce the system error
鋁電解生產現場電磁干擾非常嚴重,為此我們將需要測量的模擬信號就近轉換為頻率脈沖后再傳送到控制核心;採用浮地接入方式消除槽電壓信號中的共模成分;設計了量程自動切換電路以解決槽電壓的動態范圍寬和測量精度高的矛盾;用最小二乘法進行曲線擬和以降低測量的系統誤差。Once has the bandits and thieves to intrude guards against the place, the detector launches the wireless coded signal immediately, the networking center number which installs when is apart from defense area 150 meter within the main engine to send out the police whistle sound to report to the police immediately, reports to the police dials to establish in advance or reports to the police the telephone, the handset number, answers in the police telephone to return puts user pre - record to report to the police the pronunciation, long - distance reports to the police, simultaneously comes the real - time transmission through the internet to deploy troops for defense, to withdraw from a defended position, to report to the police and so on the condition, inquires the historic record through the computer network
該系統還採用美國進口原裝晶元與先進的無線數字高頻技術微電腦cpu控制器主機組成。在防範地點安裝好主機后,並設置在布防狀態。一旦有盜賊闖入防範地點,探測器立刻發射無線編碼信號,安裝在距防區150米以內的主機立即發出警笛聲報警,報警時撥打預先設定的聯網中心號碼或報警電話手機號碼,接警電話里回放用戶預錄的報警語音,遠程報警,同時通過網際網路來實時傳遞布防撤防報警等狀態,通過電腦網路來查詢歷史記錄。Based on the existed results, this paper considers two kinds of simultaneous cases, that is time - delay and uncertainties, to get the solution of uncertain lurie time - delay system by means of lyapunov stability theory and lmi toolbox. at the same time, the robust absolute stability conditions and the design method of robust controllers of lurie direct - type and indirect - type delay systems are given
特別地,在已有文獻的基礎上,考慮實際工業過程系統中存在的時滯與不確定性情況,基於lyapunov穩定性理論,採用線性矩陣不等式這一有效的工具,分別給出lurie直接型與間接型時滯系統的魯棒絕對穩定性條件和穩定化控制器的設計方法。The principle of the fault distance measurement for small current grounding system by injecting dual frequency signal are discussed from many aspects such as the method and the characteristic of the signal, the test of the signal, the method of the line select, the algorithm of the fault distance measurement, and the method of the fault location, etc. the task adopts this kind of principle, in which the signal injection is completed by the coupling between the power source and the pt
在詳細地說明以上三種測距演算法的基本原理后,分析各種演算法的優缺點,從注入信號的方法、特徵,注入信號的檢測,接地選線的方法,故障測距的演算法,及故障定位的方法等多個方面,論述了本課題採用的應用於小電流接地系統的雙頻信號注入式測距原理。其中,信號的注入由功率源通過電壓互感器( pt )耦合來完成。Methods of measurement for equipment used in digital microwave radio transmission systems - measurements on terrestrial radio - relay systems - transmitter receiver including modulator demodulator
數字微波無線電發射系統使用設備測量方法.地面無線電中繼系統測量.發射機接收機包括調制器解調器Methods of measurement for equipment used in digital microwave radio transmission systems. part 2 : measurements on terrestrial radio - relay systems. section 4 : transmitter receiver including modulator demodulator
數字微波無線電發射系統使用設備的測量方法.第2部分:陸地無線電中繼系統的測量.第4節:發射機接收機Methods of measurement for equipment used in digital microwave radio transmission systems - part 2 - 4 : measurements on terrestrial radio - relay systems ; transmitter receiver including modulator demodulator
數字微波無線電傳輸系統使用設備的測量方法.第2 - 4部分:地面無線電中繼系統的測量.包括調制器解調器的發射機接收機Methods of measurement for equipment used in digital microwave radio transmission systems ; part 2 : measurements on terrestrial radio - relay systems ; section 4 : transmitter receiver including modulator demodulator
數字微波無線電發射系統使用設備的測量方法.第2部分:地面無線電中繼系統的測量.第4節:發射機接收包括調制器解調器Methods of measurement for equipment used in digital microwave radio transmission systems - part 2 : measurements on terrestrial radio - relay systems - section 4 : transmitter receiver including modulator demodulator ; amendment 1
數字微波無線電發射系統使用設備的測量方法.第2部分:地面無線電中繼系統的測量.第4節:發射機接收包括調制器解調器.修改件1In mobile communication, the multi - path of channel brines the inter - symbol interference ( isi ) which cna make the ber of system larger. a technology called adaptive equalizer combined with adaptive array antenna is researched. this technology is used in the base station to restrain isi, and it is realized through landscape orientation filter, whose weight vectors are formed by rls algorithm. the result of computer simulation showe that the ber performance of system is good enough to ensure the requirement of communication
在移動無線通信中,由於傳輸通道的多徑性質,會在接收端引起碼間干擾,使系統誤碼率變大,結合智能天線系統研究了一種自適應均衡技術,在基站一端使用,用來抑制碼間干擾,它通過橫向濾波器來實現,通過rls演算法自適應地產生加權因子.計算機模擬的結果可以證明,使用無衡技術后,系統的誤碼性能可能滿足通信需要分享友人