預壓負荷 的英文怎麼說
中文拼音 [yùyāfùhé]
預壓負荷
英文
setting load-
In chapter 2, the meteorological knowledge, data and the methods of the data processing, related to the study on the atmospheric loads, are simply presented. the model for the perfect gas constant, describes by the relative moisture, is developed. the influences of the variation in the vapor component in the atmosphere on the perfect gas constant are evaluated by using the changing characteristics of the temperature on the surface, its spatial gradient and the barometric pressure
第二章：簡要介紹大氣負荷研究所需的氣象科學知識、資料及其數據處理方法；建立相對濕度表示的大氣比氣體常數模型，利用地面溫度和空間垂直溫度梯度、壓力變化的規律估算大氣水汽組分變化對比氣體常數的影響；對中國及鄰區的地面氣壓記錄進行了預處理和網格化This paper analyzes the character of the transformer load and presents the control means to reduce the comprehensive power loss to minimum by controlling the transformer operation status, which forecasts the daily load of transformer by periodical auto - regression model ( par ) and divides the daily flow line automatically into two typical phases. then, this paper simulates the par by matlab. at last, a real intelligent control device based on the ti ’ s tms320lf2407 dsp has been completed
論文分析了配電變壓器的負載特點；提出採用周期自回歸模型預測配電站用電日負荷，根據負荷預測結果和用電時段，以綜合功率損耗最小為目的變壓器經濟運行控制方法；以ti公司的tms320lf2407dsp為基礎，完成了配電站變壓器經濟運行智能監控裝置的研製。This product is absorbing all forms of domestic and foreign prefabricated substation and development, high pressure, low voltage electrical equipment, distribution transformers trinity, with perfect protection, a flexible combination of superb technology will be mainly used to replace conventional civil engineering - type substation ; deep into load centers, widely used in high - rise buildings, petrochemical plants, power plants, subways, railway stations, wharves, airports, schools, hospitals and other important establishments population is concentrated
本產品是吸收國內外各種形式的預裝式變電站而開發的，高壓、低壓成套電器、配電變壓器三位一體，具有完善的保護、靈活的組合、精湛的工藝，主要用於取代傳統土建型變電站；可深入負荷中心，廣泛用於高層建築、石油化工廠、發電廠、地鐵、車站、碼頭、機場、學校、醫院等人口集中的重要場所。Eight of input and state variables of blast furnace, i. e. silicon content, irregular coke charge, coal injection, blast pressure, blast temperature, blast volume, batch of charge in a tapping period, ratio of ore - to - coke in charge, are considered as input of prediction model
採用天津鐵廠1 #高爐的[ si ]含量、鐵間料批數、熱風壓力、實際噴煤量、冷風流量、熱風溫度、凈焦加入量、焦炭負荷等8個影響因素作為預測模型的主要輸入變量。High - speed performance : in precision machining cam and cam rollers support the taper rib exerted pressure on the load, totally avoid 2806 - 1980, reliable and high - speed operation
高速性能：在精密加工的凸輪和凸輪滾子的錐度支撐肋上施加預壓負荷，完全避免間隙產生，使運作可靠和高速。Presently most of the theoretical method to predict the propeller - induced hull pressure fluctuation is based on the calculation method in which the pressure is induced by pulsating source in infinite flow. the calculation method is adopted and the corresponded computer program is complied. the propeller - induced hull pressure fluctuation due to blade thickness, blade load, cavity thickness and the change of the cavity volume can be analyzed respectively in the computer program
目前，螺旋槳誘導的船體表面脈動壓力的理論預報方法，大多是以無限流場中點脈動源誘導的周圍流場的脈動壓力的計算方法為基礎的，本文採用該方法編制了計算程序，可以分別考慮槳葉厚度、槳葉負荷、槳葉上空泡厚度及其體積變化在船體表面指定位置上產生的脈動壓力。The basic software consists of topology analysis, on - line load flow computation, state estimator, security analysis, dispatchers training simulator, short circuit current computation, and voltage / reactive power optimize, etc. the derived softwares consist of load control, capacitor optimizer configuration, transformer and feeder load distribution, impedance computation of generator, etc. network analysis software is powerful dispatch tool, though witch the current state of the power system can be realize, then improve the security and economic potential
Dms網路分析的基本軟體有：網路結線分析、潮流計算、狀態估計、負荷預報、短路電流計算、電壓無功優化等。派生軟體有：負荷控制、電容器優化配置、變壓器與饋線負荷分配、電源阻抗計算等。網路分析軟體是有力的調度工具，通過它可以了解和掌握當前的運行狀態，從而挖掘安全和經濟方面的巨大潛力。This dissertation was working for forming a methodology about the advancing analysis of the steady - state voltage stability of power system and the preventive control measures against it, based on the load power forecast technique
本論文致力於研究基於負荷預測技術的電力系統靜態電壓穩定的預測分析與預防控制方法。As an essential component of dms, the system will supplement itself in the following aspect, short circuit current calculation, theoretical losing, voltage / reactive power optimize, state estimation, load forecast, etc
本軟體平臺是dms的重要組成部分，下一步將加入短路電流計算、理論線損計算、電壓無功優化、狀態估計、負荷預報等功能。On - line monitoring of hvcb is the precondition of predicting maintenance, is the key element of reliable run, and is the important supplement to the traditional off - line preventive maintenance in fact, the faults are made by hvcb, no matter in number or in times, is over 60 % of total faults so it has determinative importance for improving the reliability of power supply and this can greatly decrease the capital waste used by - dating overhaul in this paper, the inspecting way of hvcb mechanism characteristic is discussed the concept of sub - circuit protector is presented, the scheme that we offered has been combined with sub - circuit integrality monitoring theory, to ensure that it has the two functions as a whole according the shut - off times at rated short circuit given by hvcb manufacturer, the electricity longevity loss can be calculated in each operation, and the remained longevity can be forecast too an indirect way for calculating main touch ' s temperature by using breaker shell temperature, air circumference temperature and breaker ' s heat resistance is improved in this paper, and main touch resistance can be calculated if providing the load current msp430, a new single chip microcomputer made by ti company, is engaged to develop the hardware system of the on - line monitoring device, and special problem brought by the lower supply voltage range of this chip is considered fully
高壓斷路器所造成的事故無論是在次數，還是在事故所造成的停電時間上都占據總量60以上。因此，及時了解斷路器的工作狀態對提高供電可靠性有決定性意義；並可以大大減少盲目定期檢修帶來的資金浪費。本文論述了斷路器機械特性參數監測方法；提出了二次迴路保護器的概念，並將跳、合閘線圈完整性監視和二次迴路保護結合起來，給出具有完整性監視功能的二次迴路保護器實現方案；根據斷路器生產廠家提供的斷路器額定短路電流分斷次數，計算每次分閘對應的觸頭電壽命損耗，預測觸頭電壽命；提出根據斷路器殼體溫度和斷路器周圍空氣溫度結合斷路器熱阻來計算斷路器主觸頭穩態溫升的方法，並根據此時的負荷電流間接計算主觸頭迴路的電阻；在硬體電路設計上，採用美國ti公司最新推出的一種功能強大的單片機msp430 ，並充分考慮該晶元的適用電壓范圍給設計帶來的特殊問題；在通信模塊的設計中，解決了不同工作電壓晶元之間的介面問題，並給出了直接聯接的接線方案。Kuroda uses : oversized bal preload for light to medium loading applications, and double nut ( pin method ) for medium and higher loading applications
對于輕度以及中度載荷應用場合，黑田採用增大鋼球直徑的辦法實現預壓加載；對于高負載場合，則採用雙螺母方式。Because of forecasting reactive load at first, it can detect the change of voltage at low - voltage bus from the change of reactive load or the change of voltage at high - voltage bus, then it can decide that adjusting transformer tap or capacitor switch, and avoid blindly and deficient adjusting. on the condition the reactive power is balanced and voltage qualified, it can realize the switching times of loaded taps and capacitors being efficiently decreased
由於預先預測出無功負荷，提前了解了無功功率變化的趨勢，可以有助於判定低壓母線電壓變化是由無功負荷變化引起還是由高壓側電壓變化引起，從而適時決定是調有載調壓變壓器分接頭還是投切電容器，以此避免了盲目和不充分的調節，實現在保證無功基本平衡和電壓合格率的前提下，減少有載調壓變壓器分接頭的調節和並聯電容器組的投切次數。This paper mainly discusses a control method of substation voltage and reactive power. in order to get suitable decision for one day 24 hours tap - transformer ' s step switch and shunt capacitor switch, an approach of substation voltage and reactive power control on the basis of the combination of artificial neural network ( ann ) reactive power forecasting and evolutionary programming optimal decision - making is put forward
論文主要研究變電站的電壓/無功控制決策問題，為了確定一天24小時內合適的有載調壓變壓器分接頭位置和並聯電容器投切狀態，提出一種基於人工神經網路的無功負荷預測和進化規劃優化決策相結合的變電站電壓和無功的綜合控制決策。This article emphatically discussed and analyzed following points : load command feed forward function can improve the rapid respond character of steam turbine generator ; lead of load command have advance control function on boiler main control and can highly improve the stability of main steam pressure ; the use of predict control and state space variable function can improve the quality of boiler steam temperature control effectively, control the steam temperature in the defined range and increase the boiler and turbine life and efficiency even if working state changed in a big range ; linear compensation can restrain the vibration of generator load in the condition of big loa d change
本文重點討論、分析提出負荷指令前饋作用可以提高汽輪發電機快速響應特性；負荷指令的導前功能對鍋爐主控有超前控製作用，能顯著提高主蒸汽壓力的穩定性；採用預測及狀態空間法能有效改進鍋爐蒸汽溫度控製品質，在大幅度工況變化下仍有效控制蒸汽溫度在額定范圍內，提高鍋爐、汽輪機壽命及其效率；汽輪發電機組的快速響應性與汽輪發電機組負荷振蕩問題間的平衡關系，採用線性補償可以有效抑制在負荷變化梯度較大情況下發電機負荷振蕩問題。Based on the specification, the right phase control thyristor is chosen and the series number of thyristor is calculated. the paper also calculates the power loss of thyristor under the pulsing load, choosing the heat sink and forecast the temperature rising
以此為基礎，合理選擇了所用的高壓晶閘管元件，計算了所需元件的串聯個數，對類似於脈沖負荷下的晶閘管耗散功率進行了計算，並選擇了元件的散熱器，預計了元件的溫升。Meantime, load and pressure increment predictive model has been added and the increment predictive equation has been got
同時引入了負荷/壓力增量預測模型的概念，並給出了增量預測方程。In allusion to the characteristic of ball mill that it is simple lag, serious inertia and nonlinear, and general control methods are hard to gain a good control impact, so a fuzzy control model is held up which is graded according to burthen, temperature of outlet, negative pressure of entry, and the coupling characteristic of the model is analyzed. finally a fuzzy control system is designed as the model
而模糊控制策略大多應用於受控對象數學模型難以建立的場合，具有較好的穩定性和魯棒性，為此提出了按負荷、出口溫度、入口負壓順序分級預測的模糊控制模型，並分析了該模型的解耦特性，同時，按該模型設計了一種模糊控制系統。Through high - speed surcharging close to the cam to load flexibility, thereby strengthening the rigid partition
可通過高速預壓負荷來接近凸輪的彈性區，從而加強分割區的剛性。Inhibitory effects of total saponins of panax notoginseng on cardiac hypertrophy induced by pressure overload in rats : dependent effect of medical dosage
大鼠壓力超負荷性心肌肥大與三七總皂甙的干預效果藥物劑量依賴效應Secondly, how to actualize economical operation of transformers in substations which load fluctuates frequently is analyzed. and the resolvent that the change time of operation mode of transformers in substations is confirm scientificly, according as the real - time data and the result of the short - term load forecasting, is bring forward
分析了負荷波動較大的變電站如何實現變壓器實時經濟運行，提出了以短期負荷預測的結果為參照，以實時數據為依據科學地確定變電站變壓器運行方式改變時機的解決辦法。分享友人