新型输电线路单端电气量组合故障测距方法及其试验研究  

Combined single-end fault location method of transmission line and its experiments

作　　者：许飞[1] 董新洲[1] 王宾[1] 施慎行[1] 

机构地区：[1]清华大学电机系电力系统及发电设备控制和仿真国家重点实验室,北京100084

出　　处：《电力自动化设备》2014年第4期37-42,共6页Electric Power Automation Equipment

基　　金：国家自然科学基金重点资助项目(50937003);国家自然科学基金重大国际合作项目(51120175001)~~

摘　　要：针对原有的组合测距方法中阻抗法测距精度较低、划定故障范围较大而导致可能出现精确行波测距失败的问题,提出采用基于分布参数模型的阻抗法配合行波法构成新型单端组合测距算法,进而在高精度故障录波与测距系统硬件平台上实现了所提出的方法,并用RTDS和暂态行波保护测试仪对该方法进行了系统的测试检验。测试结果表明,所提故障测距方法在测距精度、测距稳定性和鲁棒性等方面都有了提高。最后分析了所提方法产生误差的原因。Aiming at the possible failure of present combined fault location method due to the low locating precision and large fault area division of its impedance method,an improved single-end fault location method is proposed,which combines the impedance method based on distributed parameter model and the traveling wave method together.It is implemented on the hardware platform of high-precision fault recording and locating system.Tests are carried out on the RTDS test platform and by the test device of travelingwave based protections.Results show that,the proposed method has better locating precision,stability and robustness.The causes of its locating error are analyzed.

关 键 词：输电线路 故障测距 行波 暂态行波保护 高精度故障录波与测距装置 

分 类 号：TM73[电气工程—电力系统及自动化]