CAJ | 학술논문

为分析高压输电线路对邻近作业全球定位系统（GPS）接收信号的影响,从高压输电线路发出的无线电干扰和线路对GPS卫星信号的散射两方面分析了高压输电线路对GPS接收装置观测信号的影响。高压输电线路导线电晕产生无线电干扰主要集中在10MHz以下,通过比较高压输电线路带电前后的定位误差,分析了高压输电线路对GPS接收信号的影响;高压输电线路作为大型构架对GPS卫星信号产生散射,改变卫星信号的幅值、相位和路径,GPS接收装置可能产生定位误差。通过比较离开高压输电线路不同距离测点的定位误差,分析了高压输电线路对GPS接收信号的影响。在交流特高压试验线段下进行现场试验,获得了试验线段带电和不带电运行2种工况下24个测点定位数据。试验结果表明,随着测点离开试验线段0、30、60、120、180m,坐标精度没有明显降低,与距离远近和线路是否带电运行没有明显规律。高压输电线路对邻近作业的GPS接收信号没有影响。
위분석고압수전선로대린근작업전구정위계통（GPS）접수신호적영향,종고압수전선로발출적무선전간우화선로대GPS위성신호적산사량방면분석료고압수전선로대GPS접수장치관측신호적영향。고압수전선로도선전훈산생무선전간우주요집중재10MHz이하,통과비교고압수전선로대전전후적정위오차,분석료고압수전선로대GPS접수신호적영향;고압수전선로작위대형구가대GPS위성신호산생산사,개변위성신호적폭치、상위화로경,GPS접수장치가능산생정위오차。통과비교리개고압수전선로불동거리측점적정위오차,분석료고압수전선로대GPS접수신호적영향。재교류특고압시험선단하진행현장시험,획득료시험선단대전화불대전운행2충공황하24개측점정위수거。시험결과표명,수착측점리개시험선단0、30、60、120、180m,좌표정도몰유명현강저,여거리원근화선로시부대전운행몰유명현규률。고압수전선로대린근작업적GPS접수신호몰유영향。
To analyze the interference from the high voltage transmission lines to GPS signal receiving,we analyzed the interference from the high voltage transmission lines including corona radio interference and electromagnetic scattering to GPS satellite signal.The radio interference caused by high voltage transmission line wires corona is mainly below 10 MHz.The electric power fittings and insulator producto radio interference contains more than 30 MHz,due to the influence of high frequency set skin effect,pulse interference current in the conductors reduced in attenuation,so more than 30 MHz interference is considered to be the unconnected-distribution.Through the comparison of high voltage transmission line before and after a charged positioning error analysis,the influence of high voltage transmission lines on GPS receiving signals is analyzed;High voltage transmission lines as a large structure of GPS satellite signal scattering change the satellite signal amplitude,phase and path,and GPS receivers may produce positioning error.Through the field test,data received from 24 spots are tested.The test results show that,with the points test line 0 m,far from 30 m,60 m,120 m and 180 m,coordinate precision hardly changes,and no obvious rule of distance is found.GPS in high voltage transmission line erea can reduce theprotection distance of 50 m.