CAJ | 학술논문

现有输电线路行波故障测距方法由于受行波波速的不确定以及输电线路弧垂的影响,容易出现较大的测距误差. 为此,提出了一种无需波速和线路长度整定的线路故障行波定位方法. 在线路两端安装行波信号检测装置,记录行波波头到达时间,利用故障距离与故障行波到达检测点的时间差线性关系来确定故障测距结果. 理论上该方法有效克服了波速和线路长度的变化对测距结果的影响,比传统的方法具有更高的测距精度, ATP仿真分析和实际应用效果也证明了其正确性.
현유수전선로행파고장측거방법유우수행파파속적불학정이급수전선로호수적영향,용역출현교대적측거오차. 위차,제출료일충무수파속화선로장도정정적선로고장행파정위방법. 재선로량단안장행파신호검측장치,기록행파파두도체시간,이용고장거리여고장행파도체검측점적시간차선성관계래학정고장측거결과. 이론상해방법유효극복료파속화선로장도적변화대측거결과적영향,비전통적방법구유경고적측거정도, ATP방진분석화실제응용효과야증명료기정학성.
In view of the error range caused by the uncertainty of the wave velocity and the influence of conductor sag, a method of traveling wave fault location without setting wave velocity and line length is proposed.The device of trave-ling wave signal detection at ends of the line is installed and the head of first wave is recorded.According to the linear relationship of the fault distance and transmission time, the fault location result is obtained.The method is not affected by the wave velocity and the change of line length in theory, and the precision is higher than the traditional method. The ATP simulation result and actual application result also verify its fairly high fault location precision.