線性暫態分析 的英文怎麼說
中文拼音 [xiànxìngzhàntàifēnxī]
線性暫態分析
英文
linear transient analysis- 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...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 暫 : Ⅰ形容詞(時間短) short; momentary Ⅱ副詞(暫時) temporarily; for the moment; for the time being
- 態 : 名詞1. (形狀; 狀態) form; condition; appearance 2. [物理學] (物質結構的狀態或階段) state 3. [語言學] (一種語法范疇) voice
- 分 : 分Ⅰ名詞1. (成分) component 2. (職責和權利的限度) what is within one's duty or rights Ⅱ同 「份」Ⅲ動詞[書面語] (料想) judge
- 析 : Ⅰ動詞1. (分開; 散開) divide; separate 2. (分析) analyse; dissect; resolve Ⅱ名詞(姓氏) a surname
- 線性 : [數學] [物理學] linear; linearity線性代數 linear algebra; 線性方程 linear equation; 線性規劃 line...
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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 mathematical model of diesel - generator set in the mechano - electronic transient process is proposed in this paper, the pulsation and delay of diesel torque are analyzed, the relation between diesel torque and diesel rotational speed together with injection pump rack bar displacement is described exactly. the motion law of diesel - generator set is revealed all - sidedly and nonlinear problem of diesel - generator set is settled by piecewise linearzation method
本文提出了柴油發電機組機電暫態過程的數學模型,分析了柴油機轉矩的脈動和滯后,準確地描述了柴油機輸出軸扭矩與柴油機轉速和噴油泵齒桿位移之間的關系,全面揭示了柴油發電機組的運動規律,利用分段線性化的方法解決了柴油發電機組的非線性問題。In this paper we establish math modal of transient temperature and stress fields of the turbine " rotor with finite element method, develop rotor ' s thermal status online monitor system by distribute computer and visual software, realize online show and analyst of temperature and stress fields when all kinds of transient condition, and finally provide reasonable and optimized operation suggestions, improve safety and economic level of unit sets " operation
本文採用有限元建立汽輪機轉子的暫態溫度場、應力場的數學模型,藉助計算機分散式計算、可視化等技術開發轉子的熱狀態在線監測系統,實現汽輪機在各種過渡工況下轉子溫度場、應力場的在線顯示與分析,提供合理的操作建議,提高機組運行的安全性與經濟性。On the basis of extensive reading and research of theory of the wavelet, it is presented a practical method based on odd theory of wavelet analysis to remove the white noises from transient fault current traveling waves of high voltage transmission line via multi - size analysis of wavelet
本文在廣泛閱讀和深入研究小波理論的基礎上,論文提出了一種基於小波分析的奇異性理論對通過小波多尺度變換的高壓輸電線路故障電流暫態行波信號進行白噪聲濾除的實用方法。Firstly, a new iterative version of prony analysis is proposed, which has better performance than the conventional one. then the pattern recognition of power grid ' s transient response and identification of reduced order linear model using prony method are discussed in detail
提出通過迭代演算法以提高prony分析的精度,然後詳細討論了該方法在電網暫態響應的模式識別,電網降階線性模型等值等方面的應用。Therefore, the main contents and the creative results of this paper are described as follows : ( 1 ) the on - line safety forecast theory for switching overvoltage of large power stations based on the field - circuit analysis is presented by analyzing the electromagnetic transient for electric network of large power stations
針對該研究課題,本文的主要內容及創新性成果如下: ( 1 )通過對大型電站電氣網路電磁暫態過程的分析研究,提出了一種基於場路綜合分析的廠站操作過電壓在線安全預測理論。According to the actuality of the present research on ct, this paper introduces the measurement principle of rogowski coil and analyzes the factor that influence the precision of measurement, we bring forward a new design scheme based on the rogowski coil
本文首先介紹了國內外電流互感器發展現狀,重點對rogowski線圈測量原理進行分析,研究了線圈的穩態測量誤差以及幅頻特性、相頻特性、暫態時間響應特性,論證了羅氏線圈作為傳感器單元所具有的優良特性。Error related to the model establishing and screen cover is studied in both theoretical and experimental way. according to the causation of the error, the adjustment part is adopted in the processing of signal. in addition, the characteristics between amplitude and frequency are also analyzed
本文重點對影響rogowski線圈測量的諸多因素進行分析,研究了線圈的穩態測量誤差以及幅頻特性、相頻特性、暫態時間響應特性,論證了羅氏線圈作為傳感器單元所具有的優良特性。This paper summarized a system feature set for transient stability classification, several methods for analyzing the separability of input space of transient stability classification are discussed, tabu search - ing technique is employed to select an effective set of features from a large initial features set. the classification test shows that the presented method works very well for feature selection. fisher linear recognition is employed to cut down the training sample set, the computation burden of the ann training is alleviated very much, so the convergence performance is improved
本文總結提出了一組用於穩定分類的系統特徵,研究了幾種暫態穩定分類輸入空間可分性分析的方法,並利用tabu搜索技術從一個維數較大的特徵集中選擇出一組有效特徵,取得了良好的效果;研究提出了利用fisher線性識別技術壓縮訓練樣本集的方法,大大減輕了ann的訓練負擔,提高了ann收斂的性能。Judging by the different magnitude and direction of the wavelet packet coefficient modular maximum, we can select the single phase - to - earth line. the method using wavelet singularity detection theory to extract the fault time is discussed. a fault distance measurement algorithm combining wavelet analysis used for separating the character from the transient fault signal with artificial neural networks used for the nonlinear approximation from the transient character to fault distance is presented
論文提出利用各個出線零序電流在頻帶上小波包系數模極大值的方向和大小的不同來實現故障選線,討論了利用小波分析的奇異性來判斷故障啟動時刻,提出將小波分析和人工神經網路結合,利用人工神經網路的非線性逼近能力,實現故障暫態量到故障距離的非線性映射,完成測距。Reactive power are calculated using the new algorithm. on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched - capacitor from the impacting of instantaneous rush currents by means of zero - crossing triggering of scr components, and can realize auto - tracking var and auto - switching shunt capacitor bank. initial operating parameters are stored in information flash memory of the mcu using flash self - programming technique in order to decrease complexity of the circuit and improve stability
高壓智能無功補償控制器以flash型16位單片機msp430f149為控制核心,採用了一種相角實時測量的新演算法,並在此基礎上計算出了功率因數、有功和無功,減少了運算量提高了精度;在分析了各種無功補償控制策略的基礎上,以母線電壓和無功功率復合判據控制投切,並提出一種改進的電容器投切方式? ?暫態投切控制晶閘管過零觸發,避免了電容器投切時的電流沖擊;穩態運行時接觸器替代晶閘管,實現無功補償的自動跟蹤和電容器的自動投切,解決了投切時的暫態電流沖擊和穩態時可靠運行的難題;控制器的原始運行參數採用flash自編程技術,將其保存在msp430f149片內的信息flash中,簡化了硬體電路,大大提高了系統的可靠性。The recursive criterion of transient current protection based on mallat wavelet transform is presented in order to meet the real - time demands. the reserch shows deficiency existed in the prevenient principle of transient current protection, so a new improved scheme of transient current protection is proposed. the characteristics of transient protection at different bus distribution capacitance is also analysed in this thesis. the study shows that operate of transient protection is correct when the bus distribution capacitance change. other conclusion include : the trip of transient protection must be locked when the power circuit breaker of transimission line operated, because the trip is incorrect at this time ; the features of transient current and it ' s energy is different between the fault and thunder over - voltage in transimission line, and them can be identified ; the ratio of high frequency component of current in serise capaciters compensation line, svc and hvdc system is far little than fault transient current, so all of them do not affect the working of trasient current protection
應用功率譜估計方法討論了故障高頻暫態噪聲信號在頻率軸上的分佈情況,利用功率譜分析結果實現的非參數化系統辨識方法研究了母線分佈電容對電流高頻暫態信號的衰減特性。論文的後半部分(第五,六,七章)著重分析了現有基於故障電流的暫態保護原理和判據存在的問題,提出了新的實現方案,並討論了暫態電流保護的運行性能。利用多分辨分析和小波分解快速演算法構成的遞推暫態保護判據,可以準確區分故障線路和非故障線路,實現超高速暫態電流保護,計算更為簡單方便,計算速度更快。Then, the fault circuit selecting method utilizing wavelets transform is proposed to obtain useful fault transient components. the results of simulation denote that the methods in this paper are efficient and reliable. lastly, the influences of arcing grounded are discussed
然後再利用小波變換的時頻局部性提取故障信號中的暫態分量進行選線分析,經理論分析和算例模擬,可以發現本文提出的方法是有效、可靠的。This paper analyses the transient character of line fault when the neutral point connects to ground in different ways. from the angle of signal processing, the wavelet packet analysis theory is introduced to selecting fault, in which the fault character is not the steady signal but the transient signal
本文在中性點不同接地方式下,研究和分析了線路故障特徵量的暫態特點,主要從信號處理的角度,提出將小波包分析理論運用到故障選線。This paper analyses the steady and transient character of line fault when the neutral point connects to ground in different ways. from the angle of signal processing, the wavelet analysis theory and the artificial neural networks are introduced to fault location, in which the fault character is not the steady signal but the transient signal
本文在中性點不同接地方式下,研究和分析了線路零序故障特徵量的穩態和暫態特點,主要從信號處理的角度,提出將小波分析理論和人工神經網路原理運用到故障定位,將基於穩態信號的定位原理轉移到基於故障特徵量暫態信號的定位原理。The paper expounds on the following aspects. firstly, on the basis of analysis of current techniques for measuring plant water potential and with the dynamic characteristics of vapor diffusion in consideration, the relationship between the transient process of humidity at the position of the sensor and the water potential of the plant sample is studied in depth, and the corresponding testing apparatus for the on - line non - invasive automatic monitoring of plant water potential is designed
在仔細分析現有植物水勢測量技術原理及優缺點和所開發的植物水勢測量儀的基礎上,考慮植物水分擴散的動態特性,研究樣品水分無阻尼自然擴散,其上方空氣的暫態過程與水勢的關系,設計了研究植物水勢在線無創傷自動監測技術的試驗裝置。The theory mentioned in this paper is a kind of traveling wave method. it overcomes the limitations in theory and short - comings of big errors, realizes the fault ' s checking system by a pc bus industrial control computer, adopts swift a d translation. monitoring on - off switch, warning device when the fault appears
本文所闡述的理論是一種行波法,它克服了理論上的局限性和誤差大的缺點,應用計算機進行電力系統暫態過程的數字模擬和計算程序,是分析電力系統故障的有力工具,採用pc總線工控機,選用快速a d轉換、開關量測量、出現故障聲光報警。It is also wavelet transformation that transient wave formed in the charged process of line, the accurate length of line can be got by using singularities and idea of fault location presented in the paper
再者對線路剛充電的暫態過程形成的暫態波進行小波分析,利用奇異性檢測理論及本文提出的測距方法的核心思想,得出線路的準確長度。This paper has proposed one new way of thought of differentiating the fault type. after observing the physical course of the single - phase grounding of transmission line, analyzing by the wavelet transformation the transient signals sampled during the fault period from the moment that single - phased grounding occurs to the moment that line breakers work, we can distinguish temporary fault from permanent one through the wave form
本文提出了一種不同於現有故障類型判別的思路,通過考察線路單相接地故障的物理過程,利用小波變換理論分析處理線路單相瞬時性故障和永久性故障在故障發生后斷路器開斷前時間段的暫態信號,通過波形識別區分兩種故障。Fifthly, this paper proposes the model of three - rank chaotic neural network, its chaotic characteristic is simulated. the optimization parameter of non - line chaotic neural element model and neural network model with transient chaotic behaviors are discussed
建立了三階混沌神經網路模型,並對其混沌特性進行了數值模擬;模擬分析了非線性混沌神經元模型的混沌特性;探討了暫態混沌神經網路模型參數的優化選取。分享友人