CAJ | 학술논문

为了在线监测交叉互联的单芯 XLPE 电缆的绝缘状态，提出基于 NI 数据采集卡的电力电缆绝缘在线监测系统。该系统包括安装于金属护层交叉互联处的电流、电压传感器，装有 NI 公司数据采集卡的下位机，分析数据的上位机；根据金属护层感应电压与护层电流的变化情况，采用先进的硬件设备与基于 LabVIEW 编译的监测程序实时监测电缆的运行状况，并及时判断故障是否发生。其中，数据采集卡保证了信号的同步采集，上位机与下位机通过网络进行通信，保证了数据实时分析。系统利用 LabVIEW 对信号进行采集与分析，实现了数据存储、波形回放与故障判断的功能。
위료재선감측교차호련적단심 XLPE 전람적절연상태，제출기우 NI 수거채집잡적전력전람절연재선감측계통。해계통포괄안장우금속호층교차호련처적전류、전압전감기，장유 NI 공사수거채집잡적하위궤，분석수거적상위궤；근거금속호층감응전압여호층전류적변화정황，채용선진적경건설비여기우 LabVIEW 편역적감측정서실시감측전람적운행상황，병급시판단고장시부발생。기중，수거채집잡보증료신호적동보채집，상위궤여하위궤통과망락진행통신，보증료수거실시분석。계통이용 LabVIEW 대신호진행채집여분석，실현료수거존저、파형회방여고장판단적공능。
For online monitoring the insulation state of cross-linked single-core XLPE cable,a power cable insulation online monitoring system based on a NI data acquisition card was proposed in this paper.The system was included current and voltage sensors installed on the cross-linked metal sheath,slave computers equipped with data acquisition card from NI company,and host computers for analyzing the data.Based on the changing condition of induced voltage and current extracted from mental sheath,the cable operation condition can be real time monitored and the cable fault can be tested by using advanced hardware and LabVIEW program.The data acquisi-tion card guaranteed signal synchronous acquisition.Host computer was communicated with slave computer through the network,which ensured the real-time data analysis.LabVIEW program was used to control data collection and analysis,thus to realize three main functions of data stor-age,waveform playback and fault judging.