简介:Totheyear2020,Chinawillrealizethetargetofincreasingnon-fossilgenerationto15%ofthetotalenergyconsumption.Speedinguppowersourcesrestructuringcomesupasanarduoustaskduringthe12~(th)Five-YearPlanperiod.Inthisarticle,theauthoroutlinestheprinciplesofstructureadjustmentforvariouskindsofpowersources,andpointsouttheissuesneedingattentionduringtherestructuring.
简介:ChinaElectricityCouncilorganizedcompetentauthoritiesacrosstheindustryofelectricpowertoworkoutthe"ResearchReportsonthe12thFive-YearPlanforElectricPowerIndustry"innearlyoneyear,whichprovidesareferenceforgovernmentaldepartmentstoformulatethe12thFive-YearPlanonenergyandelectricpowerindustry.Themagazinewillpublishtheserialreportsincludingpowersources,powergrids,equipmentmanufacture,andpowereconomics.Thispaperpresentsthepartof"powereconomics,"inwhichtheeconomicanalysesontheelectricpowerindustryareputforward.
简介:针对无线传感器节点能耗不均的问题,研究了一种多特征组合加权的K一means聚类算法.改进了传统K一means算法中聚类中心随机选择的问题,并针对各维度特征对聚类影响的不同,赋予不同特征不同的权值.采用新的算法,并为其构建对应的算法性能衡量指标,与已有算法相比,新算法效果较好,能够明显提高数据聚类效果.
简介:针对传统交错并联DC/DC变换器的开关器件应力高、输入输出电压变换比小、输入输出电流纹波大等问题,设计了-种基于Z源网络的改进型交错并联双向DC/DC变换器;分析了该改进型变换器的工作原理和工作过程.实验结果表明,该改进型变换器不仅能实现传统变换器功率双向传输的功能,且具有更高的电压增益及更低的开关器件的电压应力.实验验证了理论分析的正确性.