在线测量介质损耗的方法与误差分析  

The Method and Error Analysis of On-line Measuring the Diclectric Loss of High Voltage Capacitive Apparatus with Microcomputer

作　　者：唐炬[1] 孙才新[1] 苟海丰[1] 陈荣柱 

机构地区：[1]重庆大学电气工程学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》1998年第5期20-24,共5页Journal of Chongqing University

摘　　要：以电压、电流过零相位差原理为基础。分析了测量的误差来源，给出了计算公式；利用单片计算机和配套的软件，作为信号采集、数据处理和计算的工具，实现了对高电压电容型设备介质损耗（tgδ）、等效电容（C）和系统频率（f）的在线测量。Based on the principle of phase difference between voltage and current at their crossing zero points, are analysed the error souroes and the corresponding calculating formulae are providid. Using a single-chip microcomputer and related software as tools of signal collecting, data proessing and caculating,the parameters on-line measurment of the dielectric loss (tgδ),equivalent capacitance (C) of high-voltagr capacitive apparatus and the power system frequency (f) is achieved.

关 键 词：介质损耗 高压电容型设备 在线测量 误差分析 

分 类 号：TM835.4[电气工程—高电压与绝缘技术]