简介：Inexperimentalstudyofthetindioxidegassensor,insitusheetconductivitywasmeasuredwithultrahighvacuumfourpointresistivityprobe.Surfacecompositionandstoi-chiometryweredetectedusingXPS.FourseparatestructurephaseswereobtainedbyLEEDatdifferentannealingtemperature,andemissionwasobservedthroughoutthebandgapuptotheFermilevelwithUPS.Furthermore,effectsofannealingtemperatureanddosedoxygenpressureonthesurfacereconstruction,O/Snratio,sheetconductivity,variationoftheworkfunctionandbandbendinghavebeenalsoinvestigated.Theresultshelpustorevealtherelationshipsbetweentheelectronicandelectricalpropertiesofthematerialanditsnativedefectsstructure.Itises-peciallyusefultoprovideamorecompleteunderstandingofthebasicoperationmechanismsforsuchsensingmaterials.

简介：摘要：随着分布式电源与绿色能源的快速发展，江苏电网110kV及以下T接线路配置三端光纤差动保护的需求逐步增加。为保证电网安全稳定运行，本报告对江苏电网110kV T接线路三端光纤差动保护（以下简称三差保护）通道的承载方式进行了讨论与研究。

简介：

简介：介绍工厂小电流接地系统的特点;介绍单片机、外围硬设、A/D转换等以及利用该系统实现接地报警。

简介：摘要我国输电线路组成中10kV配电线路最为常见，也是电力入户的重要组成部分。10kV配电线路大多裸露在自然环境中，容易受到各类因素影响出现故障，影响到配电线路正常运行。文中分析10kV配电线路运行时常见故障问题，并给出具体解决措施，旨在提高配电线路运行质量。

简介：InordertoeffectivelyimitatethedynamicoperationcharacteristicsoftheHVDC(highvoltagedirectcurrent)powertransmissionsystematareal±500kVHVDCtransmissionproject,theelectro-mechanical-electromagnetictransienthybridsimulationwascarriedoutbasedonadvanceddigitalpowersystemsimulator(ADPSS).Inthesimulationanalysis,thebuilthybridmodel'sdynamicresponseoutputsunderthreedifferentfaultconditionsareconsidered,andbycomparingwiththeselectedfaultrecordingwaveforms,thevaliditiesofthesimulationwaveformsareestimatedqualitatively.ItcanbeascertainedthatthehybridsimulationmodelhastheabilitytodescribetheHVDCsystem'sdynamicchangetrendswellundersomespecialfaultconditions.