输电线路自适应无通道保护(二)——构成方案与仿真试验  

ADAPTIVE NON-COMMUNICATION PROTECTION FOR TRANSMISSION LINES Part Two Scheme and Simulation

作　　者：甘忠[1] 董新洲[1] 薄志谦[2] 

机构地区：[1]清华大学电机系,北京市100084 [2]阿尔斯通保护和控制公司

出　　处：《电力系统自动化》2002年第8期29-32,68,共5页Automation of Electric Power Systems

基　　金：国家自然科学基金重点跟踪项目;国家自然科学基金资助项目 (5 0 0 770 11);国家自然科学基金国际合作基金资助项目(5 0 14 0 4 30 6 86 );清华大学基础研究基金资助项目(JC2 0 0 00 2 1)

摘　　要：为快速切除输电线路任意位置的故障 ,提出了输电线路自适应无通道保护的构成方案。该方案由利用单端电流信息的延时动作模式和利用单端电压信息的瞬时动作模式组成 ,保护能够自动适应不同的故障类型和电力系统结构 ,选择相应的动作模式 ,从而瞬时或经过短暂的延时切除区内故障。理论分析和 EMTP仿真试验结果证明 :所提保护方案是完整、有效的。A protection scheme which is self- adaptive and non- com munication in transmission lines is presented to instantaneously trip any fault within the protected line section.It is composed of two sub- schemes,the delayed m ode of operation using the current information at one end of the protected line and the instant mode of operation using the voltage information at one end of the protected line.Thus the protective relay can startup the corresponding operation mode adapting to different fault types and then to trip any internal fault either instantly or with a transitory delay in the light of configurations of power system.Moreover,the academ ic analysis and EMTP simulation results validate that the proposed protection schem e is both sound and feasible.

关 键 词：输电线路 自适应 无通道保护 延时动作模式 电力系统 仿真 

分 类 号：TM773[电气工程—电力系统及自动化]