main power system 中文意思是什麼
main power system
解釋
主動力系統-
According to the system technology require, adopting singlechip realize open loop digital control of hdclsm ; using v / f conversion and complex key - control method realize digital setting of system parameter, such as velocity ; using micro - stepping control insure the motor running more smoothly ; adopting debasing speed control method to eliminate the mechanical impact of distance termination effectively ; at the same time, analyzing main power circuits drive circuit and protect circuit of system, completing hardware design and facture and software programming and debugging ; at last, making a whole test in hybrid rotary step motor. the experiment result indicates that this control system reaches the qualities required and run smoothly also
根據系統技術要求，採用單片機實現了混合式直流直線步進電動機的開環數字控制；利用v f變換和復合鍵控方法實現了系統轉速等參數的數字設定；利用細分控制技術保證了電機運行的平穩性，並進行了波形分析和理論研究；採用單片機軟體降速控制策略解決直線步進電機行程末端的機械沖擊問題；同時對主功率電路、驅動電路和系統保護電路進行了分析，完成了硬體設計、製作和軟體編程、調試，最後在混合式旋轉步進電動機上進行了全面測試。 -
The loss of the transformers accounts for largish proportion in the loss of the power system, so realizing economical operation of transformers is one of the effective measure to readuce loss and save energy. but from existing status of this field, how to effectively realize economical operation of transformers has not been done very well. this dissertation main researches how to effectively actualize on - line economical operation of transformers base on the existing scada system and equipments of the area power network
在電力網損中變壓器的損耗佔有相當大的比例，故實現變壓器經濟運行是降低網損、節約能源的有效手段之一。但綜合國內外的研究現狀，如何有效地實施變壓器經濟運行還沒有得到很好解決。本文著重研究了在地區電網現有的scada系統和設備上實現在線變壓器經濟運行的解決方法。 -
The # 9 and # 10 142mw heat supply units in gansu xigu power plant, the steam extraction main pipe system adopt westation control system of westing house company and deb coordination control policy in design. the coordination control policy successfully expand the whole the running range, from the normal running condition to abnormity running condition and start or stop condition, which simplicity base on burthen and main steam pressure coordination control
甘肅西固熱電廠# 9 、 # 10142mw抽汽母管制供熱機組，選用美國西屋公司westation控制系統，設計、應用了deb協調控制策略，從單純作為負荷和主蒸汽壓力控制協調的基本功能，成功擴展到整個運行范圍，即從正常運行工況到異常運行工況及啟、停工況。 -
Through comparison of characteristics for different dc / dc topologies, buck - boost converter was selected as main topology of the power system
在充分考慮不同dc / dc變換器拓撲特點的基礎上，本文選用了buck - boost作為系統的主電路拓撲。 -
This thesis introduces the power consumption management mechanism of wearable computing system and analyzes the power consumption management models of main power consumption modules then does a thorough study on the optimization configuration of power consumption cut time
在這方面，本文首先介紹了可穿戴計算系統的功耗管理機制，分析了各主要模塊的功耗管理模式。然後，針對功耗切換時間優化配置問題作了較為深入的研究。 -
The third generation of scada, based on the technology of distributing computer net and relation data base, could realize the large - scale internet connection, which is currently applied in data collection, surveillance control and processing control in the fields of electric power system, water supply system, petroleum and chemical industry etc. the fourth generation of scada would adopt the internet technology, object oriented technology, neural network as well as java technology as its main development tendency, aiming at enlarging the integration of scada and other systems, which could finally meet the needs of business management and integrated security economic circulation
現在的基於分散式計算機網路以及關系數據庫技術的能夠實現大范圍聯網的第三代scada系統被廣泛應用於電力系統、給水系統、石油、化工等領域的數據採集與監視控制以及過程式控制制等諸多領域。第四代scada系統的主要發展趨勢是採用internet技術、面向對象技術、神經網路技術以及java技術等技術，繼續擴大scada系統與其它系統的集成，綜合安全經濟運行以及商業化運營的需要。 -
Man b & w 10l90mc diesel engine is a new type of man diesel company and it has been used in large container vessel. in order to investigate into the characteristic of shaft torsional vibration when any single cylinder flames out and how that affects the main power propulsion system of a ship, the author puts forward a new way of calculation concerning the shaft torsional vibration when the mean indicated pressure of other cylinders remain unchanged
在此基礎上，開發了新的船舶軸系扭轉計算軟體，並以manb & w公司近幾年新推出的一種大功率多缸柴油機manb & w10l90mc型柴油機為例，分別進行了額定功率下和單缸熄火下的扭轉計算，並提出單缸熄火時其他缸平均指示壓力保持不變的軸系扭振計算方法。 -
Through these ways the main controlling system controls the brightness, contrast, saturation of output pictures. at the same time cpld technology is adopted to produce all kinds of controlling signals and reduce the volume and the power consumption
為了便於豐控系統控制掃描轉換器的輸出圖像的亮度、對比度和色飽和度，掃描轉換器提供了rs - 422和rs - 232兩種通信方式。 -
The reactive power compensation is an important engineering in the power system. the active reactive power compensator designed in this text takes the instantaneous reactive power theory of three - phase as foundation, and is formed by the reactive current testing circuit, current tracking control circuit and the main circuit, and among them the current tracking control circuit is formed by instruction current arithmetic circuit, current polarity checkout circuit and current tracking control logic circuit three parts in the circuit form
無功功率補償是電力系統中的一項重要工程，本文所設計的有源無功功率補償器是以三相瞬時無功功率理論為基礎的，它由無功電流檢測電路、電流跟蹤控制電路和主電路三大部分組成，其中電流跟蹤控制電路由指令電流運算電路、電流極性檢測電路和電流跟蹤控制邏輯電路三部分構成。 -
Based on the structural evolution and geological framework in northern margin rift of qaidam basin, this paper presents that the overall course of faults development in middle qaidam is the main power for controlling the superimposition and assemblage of mesozoic and cenozoic basins, the deep sedimentary structure of mesozoic and the reverse structures during himalayan movement in this rift, and illustrates that the petroleum system in it is characterized by side - by - side pattern in space and by continuous pattern in time
摘要在分析研究柴北緣斷陷構造演化和地質結構的基礎上，指出柴中斷層發育的全過程，是控制柴北緣斷陷中、新生界盆地的疊加與組合、中生界深層沉積構造和喜馬拉雅運動期構造反轉等形成的主要動力，進而闡明?柴北緣斷陷含油氣系統在空間上為並列型、在時間上為連續型的特徵。 -
Abstract : the people ' s congressional system is an important content of the socialism with the chinese characteristic. the people ' s congress is the highest power department in china, and the people ' s government is the executive department of the administration power. the status and effect on supervision and inspection of the main power body should be embodied sufficiently in the realtionship between the congress and the government, and the power executer ' s obligation for responsibility and report should be carried out fully. three relationships should be paid enough attention to about the innovation of the political system. first, to correct the position of the relationship between initiative and passivity ; second, to perform a system to deal with the relationship between self - discipline and heteromy ; third, to emphasis on carrying out to cope with the relationship between theory and practice
文摘:人民代表大會制度是中國特色社會主義的一項重要內容.人大是中國的最高國家權力機關，人民政府是其行政權力的執行機關.在人大與政府的關繫上，應充分體現權力主體的監督、檢查的地位和作用，政府在與人大的關繫上應切實履行權力執行者的負責、報告義務.在政治體制改革中應處理好三個關系，一是主動與被動的關系，二是自律與他律的關系，三是理論與實際的關系 -
The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。 -
Urban network is the main part of electrical power system
城市電網是電力系統的主要構成部分，是城市現代化建設的重要基礎設施之一。 -
The power supply & transmit electricity system in guangyuan fulfilled the role of supplying main power to guangyuan city. while the harmonic occurred is very serious and it has not been restrainted. the main harmonic sources are two loads : aluminium electrolysed load and electrized locomotive load
廣元電力網主要擔負著廣元市、縣工農業及人民日常生活用電任務，但其諧波極其嚴重，並且沒有進行治理，其主要諧波源負荷為電解鋁整流負荷和電氣機車牽引負荷。 -
The people ' s congressional system is an important content of the socialism with the chinese characteristic. the people ' s congress is the highest power department in china, and the people ' s government is the executive department of the administration power. the status and effect on supervision and inspection of the main power body should be embodied sufficiently in the realtionship between the congress and the government, and the power executer ' s obligation for responsibility and report should be carried out fully. three relationships should be paid enough attention to about the innovation of the political system. first, to correct the position of the relationship between initiative and passivity ; second, to perform a system to deal with the relationship between self - discipline and heteromy ; third, to emphasis on carrying out to cope with the relationship between theory and practice
人民代表大會制度是中國特色社會主義的一項重要內容.人大是中國的最高國家權力機關，人民政府是其行政權力的執行機關.在人大與政府的關繫上，應充分體現權力主體的監督、檢查的地位和作用，政府在與人大的關繫上應切實履行權力執行者的負責、報告義務.在政治體制改革中應處理好三個關系，一是主動與被動的關系，二是自律與他律的關系，三是理論與實際的關系 -
The main job of this research is : ( 1 ) analyze the operation situation of power system during faults ; pay attention to the traveling wave on the three - phase transmission line ; study the equation of voltage on three - phase transmission line with impedance capacitance coupling between phases ; contact the voltage on any point with the fault voltage, study the singularity of the voltage signal in fault point, and make it to be the base of the new fault detection method ; ( 2 ) apply the singularity detection theory based on wavelet analysis to the power system faults detection, give a complementary criterion to current fault detection criterion, study how to select the basic wavelet, how to filter noise, how to detect the singular point or fault point, and finally give a total solution. the simulations prove it to be a quick, correct and effective fault detection method
本文的主要工作有： （ 1 ）分析電力系統在發生故障時的運行狀態，尤其對三相傳輸線上的故障行波進行了分析和研究，推導了考慮相間耦合的三相傳輸線電壓方程，並將傳輸線上任一點的電壓與故障點電壓建立起聯系，得出了傳輸線上電壓信號在故障點處的奇異性，並以此作為構造新的故障檢測演算法的理論基礎； （ 2 ）將基於小波變換的信號奇異性檢測理論運用於電力系統故障檢測中，針對目前相關研究的不足，提出了電力系統故障檢測判據的補充判據，通過對基本小波的選擇、除噪措施、信號奇異點也即故障點的檢測方法所作的分析，給出了一個可行的解決方案；模擬研究表明：這是一個快速、準確、有效的故障檢測演算法。 -
Requirements analysis, system frame design, algorithm design, code compile and software test of protection setting verifying and analysis system of sub power system are all accomplished. main research work of this paper is concentrated on three respects : ( 1 ) knowledge expressing of mathematic model and physics model of power system using relation database and object oriented language, ( 2 ) new methods of in - substation topology and net topology analysis based on topology of hierarchical model, ( 3 ) father research of protection coordination considering difference of protection setting verifying and fixing
論文提出了進行保護定值在線校驗的意義和方法，並按照軟體工程的規范化開發的要求，完成了滄州地區電網保護定值在線校驗分析系統的需求分析、系統框架設計、演算法設計、代碼編寫和軟體測試的大部分工作，主要的研究工作集中在： （ 1 ）利用關系數據庫和面向對象語言對電網進行物理模型和數學模型上的知識表示。 -
The paper researched the model and simulation of pwr nuclear power plant and found the basis for the research and simulation of " ads ". the paper mainly include : 1. the modeling of main component of the pwr nuclear power plant main circuit system and established the suitable teaching system ' s physics - mathematics modeling for microcomputer simulation
本文研究了壓水堆核電站系統的建模和模擬問題，初步完成了pwr核電站物理運行的pc機教學模擬演示平臺系統，同時為「加速器驅動潔凈核能系統」 （ ads ）的基礎研究成果演示與模擬奠定基礎。 -
When switching the no - load overhead lines by alternating - current high - voltage circuit breaker which is a kind of daily operations in electric power system, over - voltage is probably bringed out and insulating property of the electric devices is breakdowned sometimes, especially, when occuring re - strike. the main purposes that the tests on switching line - charging current are performed in the laboratory are assessing re - strike performance of circuit - breakers. according to the test results, the design of the circuit - breaker is optimized and re - strike performance is improved
交流高壓斷路器是電力系統中最關鍵最重要的設備之一，斷路器開合空載架空線路是電力系統中常見的操作，操作過程中通常會出現過電壓，對系統絕緣造成威脅，嚴重時會破壞系統的絕緣性能，發生事故，隨著電力系統電壓等級的提高、輸電線路不斷延長及傳輸容量的增大，由操作過電壓引起的絕緣閃絡、設備破壞事故的幾率更加突出。 -
Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method
本文基於netomac模擬軟體，以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容，主要做了以下工作：建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型，並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點，將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小，設計了三段式預調度演算法：用靜態規劃法求解整個預調度計劃周期內的優化問題；用優先級法求解機組組合問題；用改進的powell法求解最優潮流問題。
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