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CN103760420A 基于分布参数模型的输电线路工频参数在线测量方法 无效 - 驳回

基于分布参数模型的输电线路工频参数在线测量方法
摘要：
一种基于分布参数模型的高压输电线路工频参数在线测量方法，其特征是包括以下步骤：S1推导出单回三相输电线路的分布参数数学模型，得到：S2利用同步采集装置采集被测输电线路首端的三相电压、电流信号及末端三相电压、电流信号S3根据上式求出r1和r2，进一步求得输电线路工频参数Z0、Zm、Y0及Ym。本发明推导出了三相输电线路分布参数模型，使现有测量装置10kHz采样率、16位分辨率、0.1%的精度就可满足算法要求，实现输电线路工频参数在线测量的问题，具有理论和实际应用价值。
摘要（英）：

A high-voltage electric transmission line power-frequency parameter on-line measurement method based on a distribution parameter model is characterized by comprising the following steps that S1, the distribution parameter mathematical model of a single-circuit three-phase electric transmission line is deduced so as to obtain the equations (please see the equations in the specification); S2, three-phase voltage and current signals of the head end of a measured electric transmission line and three-phase voltage and current signals of the tail end of the measured electric transmission line are collected by a synchronous collecting device; S3, according to the equations, r1 and r2 are obtained, and furthermore power-frequency parameters Z0, Zm, Y0 and Ym of the electric transmission line are obtained. By means of the high-voltage electric transmission line power-frequency parameter on-line measurement method, the distribution parameter model of the three-phase electric transmission line is deduced, an existing measurement device with the 10-kHz sampling rate, the 16-bit resolution ratio and 0.1% precision can meet arithmetic requirements, on-line measurement of the power-frequency parameters of the electric transmission line is achieved, and theoretical and practical application value is obtained.

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