电力论文翻译

我即使今天晚些时候要出差，还是认真帮你赶出来了（中午1：14）。可别忘了那100分哦!如果特别满意，多多益善，算是一种奖励吧。With the rapid development of the power industry in China, the use of various power generating units of 300MW, 600MW and even 1,000MW capacity has been on the increase and large-capacity once-through boilers have in the process become predominant at the expense of drum boilers. Against this background, if is of real significance to conduct a thermal computation of 300MW once-through boilers in variable working conditions and undertake an analysis of the properties thereof. The fact that EXCEL is employed as a tool for calculating boiler heat is based on its powerful data formatting and formulae input functions. EXCEL’s built-in VBA programming tool enables the former to approximate charts by virtue of formulae, thus rendering some data which require chart look-up more easily assessable and more accurate. In addition, EXCEL’s chart-generation function presents in a more direct fashion the changing trend of data to facilitate date analysis. Thermal computation of the heated surfaces of the boiler with the use of the EXCEL software has helped achieve the semi-automation of boiler thermal computation for verification and adjustment purposes by improving the speed and accuracy of the computation. Using as its computation object the 935 ton/hr once-through boiler manufactured by the Shanghai Boiler Factory in 1971, based on the standard approach in thermal computation of boiler generating units, incorporating the latest studies on the boiler industry in recent years and utilizing the modern office software of EXCEL, this paper is a result of the thermal computation of multiple working conditions of the 300MW once-through boiler and optimization of the computational formulae of certain parameters which culminated in a study and analysis of the data obtained through the computation. It provides useful references for the safe and economical operation of boilers. 关键词：直流锅炉;热力计算；EXCEL软件；变工况；特性分析Key Words: once-through boiler; thermal computation, EXCEL software; variable working conditions; analysis of properties

最好自己在整理一下With the current rapid development of power industry, a variety of 300MW, 600MW of 1000MW units, and even more and more large volumes of once-through boiler steam drum also replaced the furnace has dominated for 300MW once-through boiler for variable the status of the thermal characteristics of the calculation and the importance of a reality. To EXCEL tools to carry out the purpose of calculating the boiler thermal calculation is based on its powerful functions and formulas form data input, and the EXCEL's built-in VBA programming tools and makes it able to fit graphics to use formula, so that some of the needs of search graph data more easily and get more accurate results. It features the image generation can change the trend of the data in a more intuitive type of show, facilitate data analysis. EXCEL software through all of the boiler heating surface to heat a boiler calculated calculated semi-automated calibration, improved computing speed and accuracy of results. In this paper, Shanghai Boiler Works in 1971 produced 935 tons / DC at the time of the object for the purpose of calculating furnace to heat boiler unit standard method of calculation based on the boiler industry in recent years combined with the latest research results and use of modern office software EXCEL, for the 300MW once-through boiler for a number of conditions and the thermodynamic calculation of the formula for calculating the parameters are optimized, the final data for calculating the research and analysis carried out for the safety of boiler operation and provide a reference economy. Key words: once-through boiler; thermodynamic calculation; EXCEL software; variable condition; Analysis

Along with the electric power electronic installation's widespread use, in electrical network's overtone pollution condition is day by day serious. At present widely uses the overtone processing method is reduces the overtone or the filtration overtone as far as possible. The traditional filter equipment not only facility cost high invests in a big way, moreover wasted in vain has been possible to perform the use the overtone energy. The present paper proposed that one kind carries on the electrical machinery dragging using the overtone the method and the equipment, this equipment can the electrical network harmful, and present is filtered by the electric power department the overtone energy uses, uses in actuating the direct current machine. 谐波 The overtone谐波的危害 the overtone harm谐波抑制 harmonic suppression 无源滤波器 The passive filter, 基波消磁电路the fundamental wave degaussing electric circuit 谐波拖动the overtone drives

目前随着我国电力行业的飞速发展，各种300MW，600MW甚至1000MW的机组已经越来越多，大容量的直流锅炉也随之取代了汽包炉占据了主导地位，对300MW直流锅炉进行变工况的热力计算并进行特性分析有着现实的重要意义。Currently along with the our country electric power profession fly a development soon, various 300 MW, 600 MW even the machine set with 1000 MW already more and more, the direct current boiler of big capacity also immediately replace a vapor pack stove to occupy predominance position and carry on to the 300 MW direct current boiler change work condition of thermodynamic energy calculation and carry on characteristic analysis to have reality of importance meaning.以EXCEL为计算工具来进行锅炉热力计算是基于它强大的数据表格功能和公式输入功能，而EXCEL内置的VBA编程工具又使得它可以把图形用公式进行拟合，让有些需要查图的数据更容易被得到以及结果更精确。 Taking EXCEL as calculation tool to carry on boiler thermodynamic energy calculation is according to it of strong function and formula of the data form importation function, but place inside EXCEL of VBA plait distance tool again make it be able to use the formula to the sketch to carry on drawing up to match, let some demand check the data of diagram more easy is get and result more precision.它的图像生成功能又可以把数据的变化趋势以更直观的型式展现出来，方便对数据分析。It of the picture born function can make the variety trend of data keep the pattern of view again with more display come out, convenience logarithms according to analysis.通过EXCEL软件对锅炉各个受热面进行热力计算实现了锅炉热力校核计算的半自动化，提高了运算的速度与结果的准确性。Pass EXCEL software to be subjected to to the boiler hot the noodles carried on a thermodynamic energy calculation realization the boiler thermodynamic energy school pit calculation of half automation, exaltation operation of the accuracy of speed and result.本文以上海锅炉厂1971年制作的935吨/时的直流炉为计算对象，以锅炉机组热力计算标准方法为基础，结合近年来锅炉行业的最新研究成果，并利用现代化的办公软件EXCEL，对300MW直流锅炉进行了多个工况的热力计算并在对一些参数的计算公式进行了优化，最后对计算得到的数据进行了研究与分析，为锅炉运行的安全性与经济性提供参考。 This text above 1971 of factory of sea boiler creation of 935 ton/hour of direct current stove is calculation object, with boiler machine set thermodynamic energy calculation standard method for foundation, combine in recent years boiler profession of latest research result, and make use of modernization of transact software EXCEL, carried on several work condition to the 300 MW direct current boiler of thermodynamic energy calculation combine at to some parameter of calculation the formula carried on excellent turn, end to calculation get of the data carried on research and analysis, for boiler circulate of safety and economy provide reference.关键词：Keyword:直流锅炉;Direct current boiler;热力计算；Thermodynamic energy calculation;EXCEL软件；EXCEL software;变工况；Change work condition;特性分析 Characteristic analysis

Transistors to integrated circuits at the core of the formation of the micro-electronic information processing technologies and to the formation of SCR as the core of the power of electronic processing of semiconductor technology constitute the traditional power electronic systems, with the development of technology and the advent of a new generation of devices , Makes power conversion circuits and electronic control system innovation. , A wide range of PWM (PWM) circuit, zero current, zero-voltage switch resonant circuits and high-frequency chopper circuit, etc., have become modern power electronics technology an important component part. Its applications involving automation, defense, aerospace, transportation, energy, and environmental protection. Power Electronics led the development of the power of technology development, and the power of technology to effectively promote the development of power industry development. So far power has become a very important foundation for science, technology and industry, and widely used in various industries, the development trends of high-frequency, diversity, modular, green, efficient, digital. This article discusses the power of electronic systems from traditional to modern power and the development process, highlighted the power of modern electronic applications, the last of the development trend of switching power supply. Transistor integrated circuits Transistor integrated circuits Information Processing Information Processing Microelectronics Technology Microelectronics Technology SCR Thyristor Power processing power handling Semiconductor Electronics Semiconductor Electronic Technology Traditional power electronic systems Traditional power electronic system A new generation of devices A new generation of devices Power Electronics transform circuit Power Electronics transform circuit Pulse width modulation circuit Pulse width modulation circuit Zero-current zero-current Zero-Voltage Zero-Voltage Switching resonance circuit Switching resonance circuit High-frequency chopper circuit High-frequency chopper circuit The power of modern electronic technology Modern power electronics technology To automation - - environmental Automation, defense, aerospace, transportation, energy, Environmental protection Power Electronics Power Electronics Technology Power Technology Power Technology Power Industry Power Industry High-frequency - Digital High-frequency, diversity, modular, green, efficient, digital