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1.
《电气》1990,(2)
In China,sponsored by the Chinese Society of Electrical Engineering,theChinese Power Engineering Society,the China Energy Research Society,andco-sponsored by East West Center and McGraw Hill Publishing Co.U.S.A.,will be held in October 22-26,1990 in Beijing.The main topics for solicitingpapers for this Conference are as follows:  相似文献   

2.
Influenced by the rapid growing of power demand in recent years, pow sources construction has been expanded fleetly in China.This article reviews the features of power sources development nationwide in 2006 and the problems that still existed in the structure of power sources.Finally,suggestions on further developing power sources are proposed.  相似文献   

3.
《电气》1999,(1)
Thecivilstructuredesignlevelofathermalpowerplantismostlyreflectedbythestructuredesignofitsmainpowerbuilding.Thispaperistoreviewanddiscussthedesignofthemainpowerbuildinginthermalpowerplants:I.ReviewontheCivilStructllreofThermalPowerPlantsThecategoriesofpowerhousecivilstructUreinChinacanbedividedintothree:reinforcedconcrete,steelstrUctUreandsteelplusconcretestructures.Ofthethreetypesofstructures,thereinforcedconcreteisthemostfrequentlyused.Theconstructiontechnologyofthereinforcedconcretestr…  相似文献   

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《电气》1999,(3)
ElectricpowerisabarometerofnationaleconomicdevelopmenttheoveralleconomicsituationinZhejiangProvinceappearedincreasingtendencyinthefirsthalfoftheyear,whichmobilizedcorrespondingincreaseinelectricityconsumption,inparticularthereboundingofindustrialpowerconsumption.Itresultedintheprovincialelectricityconsumptionbeingamongthetoprankinthecountry.ThetotalelectricityconsumptionofentireZhejiangProvinceinthefirsthalfoftheyearamountedtomorethan28TWh,being12.6%operthanthecorrespondingperiodofthepreviou…  相似文献   

7.
《电气》2000,(2)
The China's first exported 300 MW Chashma Nuclear PowerPlant in Pakistan began trial operation on June 13, 2000.The operation signifies that the construction of the nuclearpower project, begun in August 1993, has entered the finalphase. Through a series of performance tests and debuggings,the nuclear power plant is expected to be fully operational bythe end of 2000.China National Nuclear industry Corporation and ChinaNuclear Engineering Construction Corporation as the generalcontractors…  相似文献   

8.
The power supply market is changing significant in the past years. Product design innovation in the computing and telecom market needs the support of new converters like IBC (Intermediate Bus Converter) and non isolated POL (Point Of Load) as well as AC-DC power supply. High density and low profile converters are always the immutable theme. Alliances, collaborations and compatible are playing more important roles in the industry than anytime before. This paper provides market analysis and product technology overview on communication power supply. Reference is made to Artesyn's power product roadmap in some sections of the paper.  相似文献   

9.
FERC needs to acknowledge that gas and electric transmission facilities are competitive alternatives, and undertake to develop a consistent set of policies toward both forms of energy delivery.  相似文献   

10.
《电气》1996,(4)
(1) The revising of criteria of power system planning and operation are absolutely needed to adapt ever-changing conditions and to make the better coordination between security, quality and economy.(2) The main mission of the Ministry of Electric Power is to realize long distance and bulk power transmission from the west to the east and to solve the related technical, economic and organizational problems. To meet the mission, the Ministry of Electric-Power is preparing some planning and operating guides to promote regional interconnections and keeping stable and economic operation of interconnected systems.(?) There are many problems needed to be studied for the new market-oriented structure in power industry.  相似文献   

11.
Introduction Whenever humid air comes in contact with a cooling sur- face of which temperature is below both dew-point of water vapor in air and freezing point, ice will form. The ice that forms on the structure surface falls into one of four types[1]. (1) Glaze/Clear ice, as its name suggests, is opti- cally clear and very little light is scattered. (2) Rime ice, is optically opaque, it scatters light much further from a source than clear ice. (3) Mixed phase ice, as its name suggests, is so…  相似文献   

12.
《电气》1992,(1)
Jixian Thermal Power Project is sited at the geographi-cal and electrical load center of Beijing,Tianjin andTangshan three municipalities,occupying a total area of 315 hec-tares,in which 134 hectares are of power plant and constructionzone.According to the long term planning,the ultimate plant capacitywill be 2200 MW,while the capacity of the first phase is 1000 MWwith two 500 MW super critical steam parameter coal-fired thermalunits to be imported from Russia,these units rank first in both unit ca-pacity and steam parameter in Beijing-Tianjin-Tangshan Power Net-work.This Project was approved by the State Planning Commissionin October 1989 with an estimate total construction cost of 2 billionyuan RMB,which is jointly financed by the State Energy Investment  相似文献   

13.
《电气》1999,(1)
WiththemarketeconomybeingdevelopedinChina,thesystemreformofpowersectorisalsocarryingtoanewstage.Thetrendtowardsadiversityofenergytypesgivespeoplemoreopportunitiesandfreedomtochoosedifferentformsofenergyalternatives.Sincetherapiddevelopmentofpowergenerationcapacityinrecentyears,powermarketisprogressivelychangingfromseller'smarkettobuyer'smarket,andpowersupplywilldependondemand.Therefore,thestrategices,waysofthinkingandmethodsofpowerdevelopmentplanningmustconformtotherequirementsofnewsituation,t…  相似文献   

14.
Many green power products are not producing much, if any, environmental benefit, and not one that could be replicated if all other customers tried to make the same choices.  相似文献   

15.
LuMin 《电气》2005,16(2):17-19
This paper introduces the situation of coal and power production, the tense supply of power coal and deteriorated coal quality in 2004, analyzes the causes of tense supply of power and coal, one of which is due to the government regulated power tariff against rapid escalation of coal price that power enterprises can hardly afford. It also presents some policy proposals to relieve the contradiction between coal and power, including to intensify macroscopic regulation between industries and regions, solve the problem of power coal transportation and reduction or exemption of tax on coal industry and circulation links, through secondary distribution to regulate profit difference among industries.  相似文献   

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The article proposes a new concept for designing power plants operating on natural gas and involving means for fully removing carbon dioxide from the cycle in the liquid phase form in order to subsequently bind or bury it for reducing the emissions of greenhouse gases into the atmosphere. In contrast to means used in the conventional power plant process arrangements for capturing CO2 from the combustion products, the proposed concept involves the need to develop fundamentally new power engineering technologies, in which the CO2 utilization system is intrinsically built into the cycle structure already at the initial stage of power plant design and optimization of its parameters. As an example, the process flow diagram of a natural gas fired power plant generating electricity and heat is considered. The integral indicators characterizing the thermal efficiency of such a power plant are given and compared with the similar indicators of the operating or newly designed plants fitted with CO2 capturing systems, the process arrangement of which implies direct emission of carbon dioxide into the atmosphere. The comparison is carried out for the average ratio between the generated electricity and heat that has historically been established in the climatic zone of central Russia. It is shown that the proposed cycle features high thermodynamic efficiency and competitiveness with respect to the same indicators of alternative systems for combined generation of electricity and heat. The article suggests versions of the CO2 capturing system configuration that allows, with the modern technological level of equipment, the carbon dioxide emissions to be reduced down to 0.5–5.0% of the total amount produced in firing natural gas.  相似文献   

18.
  Chu  Xue 《电气》2006,17(2):9-12
Explanation of "knee point" ● Has a "knee point" emerged in the power supply and demand? ●How to identify the "knee point"? There are two explanations about "knee point." A knee point in terms of mathematics and statistics refers to a clear knee point b…  相似文献   

19.
Abstract—In recent years, combined heat and power units have become significant elements in conventional power stations due their numerous merits, including operational cost savings and reduced emissions. In this regard, this article proposes a short-term multi-objective framework for the combined heat and power economic/emission dispatch problem. In addition, to more precisely model the problem, the non-linear forms of fuel cost functions and valve-point loading along with power transmission loss are considered. The objectives of the problem are total cost minimization as well as minimization of pollutant emissions; lexicographic optimization and the augmented epsilon-constraint technique are employed to solve the multi-objective problem. Also, a fuzzy decision making technique has been used to select the most preferred solution among the Pareto solutions. Afterward, a comprehensive comparison is performed between the results obtained from the proposed method and those derived from the non-dominated sorting genetic algorithm II, strength Pareto evolutionary algorithm 2, and multi-objective line-up competition algorithm, verifying the superiority of the presented approach for lower execution time, total cost, and emission. Furthermore, the proposed model is implemented on a large-scale test system while the execution time is rational.  相似文献   

20.
Central China power system is one of the large regional power grids carrying out power market demonstrative project. Because of lacking power market experience, a lot of problems need to be thoroughly discussed  相似文献   

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