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PROTECTIVE RELAY SYSTEM WITH SPACIAL DIFFERENCE FILTER AND SUMMING FILTER
PROTECTIVE RELAY SYSTEM WITH SPACIAL DIFFERENCE FILTER AND SUMMING FILTER
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机译:具有空间差分滤波器和求和滤波器的保护继电器系统
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摘要
A protective relay system for discriminating whether or not fault point of the power system exists within a predetermined range, which comprises an addition filter adapted to input sampling data vm, im of voltage v, current i of the power system to a filter having transfer function (1+Z-1+Z-2+ ... +Z-n) (1+Z-1) (Z is Z transform operator to obtain voltage data vsm, current data ism as output, a difference filter adapted to input sampling data vm, im of the voltage v, current i to a filter having transfer function (Z-k-Z-q) (k+q=n+1; k q) to obtain voltage data vjm, current data ijm as output, a controlled variable calculation unit for calculating reactance value Xm on the basis of the following equation: MATH from voltage vsm, current ism obtained at the addition filter and voltage vjm, current ijm obtained at the difference filter at time tm and voltage vsm-p, current ism-p obtained from the addition filter and voltage vjm-p, current ijm-p obtained from the difference filter at time tm-p, and an operation judgment unit for judging whether or not Xm /= Xs holds, from reactance value Xm and setting value Xs obtained at the controlled variable calculation means. IMAGE
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机译:一种用于鉴别电力系统故障点是否在预定范围内的保护继电器系统,其包括附加滤波器,该附加滤波器适于将采样数据vm,电压v的im,电力系统的电流i输入到具有传递函数的滤波器中。 (1 + Z <-1> + Z <-2> + ... + Z <-n>)(1 + Z <-1>)(Z是Z变换算子,获得电压数据vsm,电流数据ism为输出,差动滤波器,适于将电压v,电流i的采样数据vm,im输入到具有传递函数(Z <-k> -Z <-q>)(k + q = n + 1; k < q)获得电压数据vjm,电流数据ijm作为输出,用于基于以下方程式计算电抗值Xm的控制变量计算单元:根据电压vsm 展开▼