Abstract : in this paper , the setting scheme of the current differential protection based on sampled values using fault component is investigated . the setting schemes of the resistance coefficient and the least trip differential current are discussed in detail . the probable protection setting values for the hv transmission lines are described . it testifies the feasibility for the applications of the protection to the hv transmission lines 文摘:对基于故障分量的采样值电流差动保护制动特性曲线的整定方法进行了研究，详细讨论了其制动系数和最小动作电流的整定方法，同时对该保护在输电线路中的应用进行了初步的估算，说明了该保护的优异性能。
The character , history and trends of oleds ( organic light - emitting devices ) were introduced in this paper as well as its relative optical - chemical and physical theories . several samples of different structure - single , double and doped - were designed and fabricated by selecting appropriate materials . after that , several parameters which reprensent device ' s performance were measured 本论文介绍了有机电致发光（有机el ）器件的特点、历史、动态；着重论述了与有机el相关的光物理和化学原理以及有机el器件的原理；设计并制备了单层、双层以及掺杂型有机el器件；对器件的性能参数进行了测试、分析和对比，并对特性曲线的成因进行了理论解释。
