CAJ | 학술논문

针对架空线-电缆混合线路，提出了基于查表法的故障测距算法。将故障距离与混合线路两端测量点接收到故障初始行波的时间差按一一对应的关系制成表格，表格中数据的采样步长根据现场设备的采样频率确定。当线路发生故障时，测量故障初始行波从故障点传播到线路两侧测量点的时间差，然后搜索已制定好的表格来确定故障点位置。 ATP仿真结果表明，查表法的测距精度较高，适用于现场设备运行，提高了运算速度，具备较高的实用价值。
침대가공선-전람혼합선로，제출료기우사표법적고장측거산법。장고장거리여혼합선로량단측량점접수도고장초시행파적시간차안일일대응적관계제성표격，표격중수거적채양보장근거현장설비적채양빈솔학정。당선로발생고장시，측량고장초시행파종고장점전파도선로량측측량점적시간차，연후수색이제정호적표격래학정고장점위치。 ATP방진결과표명，사표법적측거정도교고，괄용우현장설비운행，제고료운산속도，구비교고적실용개치。
Aiming at the hybrid transmission lines consisting of overhead lines and power cables , this paper proposes a fault location algorithm based on table look-up method. Fault distance and the arrival time differ-ences of initial fault traveling wave at two measurement points in hybrid lines are tabulated in accordance to the one-to-one correspondence. The sampled step length of the data in the table is determined by the sampled frequency of the field devices. When the transmission line breaks down , arrival time difference of the initial traveling wave traveling from the fault point to measurement points at both sides of the line is measured and then fault location can be determined by searching the table. The ATP simulation results show that the table look-up method is of high precision and it is suitable for field operation; it improves calculation speed and is of high practicability.