DEVICE FOR DETERMINING THE STATIC CHARACTERISTICS OF LOAD VOLTAGE PROTECTED FROM ABNORMAL DISTORTION

摘要

The invention relates to the field of measurement in electrical engineering and can be used to determine the static load characteristics of the voltage U, which is represented as polynomial second degree approximation coefficients a_0,a_1,a_2, which correspond to the minimum standard deviation. The apparatus comprises a filter unit, the measuring current transformer the output of the supply transformer load voltage transformer connected in parallel to the load control unit, a first output connected to the control input of the supply transformer load unit active power measurement and the voltage control input of which is connected to the second output of the control unit, and the first and second data inputs are connected respectively with the output of the measuring current transformers and measuring transformer voltage determining unit performance regulating effects input coupled to the output of active power and voltage measurements, determining unit performance regulating effects input of which is connected to the output of active power measurement unit and voltage to a first data input of the filtering unit, configured to filtration measurements vapor determining unit anomalous distortion input coupled to the output of determining indicators regulating effect in, and a signal and information outputs - are respectively connected to the control and second information input of the filtering block, the block determining the absolute baseline power values, whose input is connected to the output of the infiltration block, the block determining the relative voltage and power values, the first input of which is connected to the output determining block absolute values ​​of basic power, approximation coefficients determining unit having an input coupled to the output of determining the relative values ​​of voltage and powerfully STI, the error determining unit, whose input is connected to the output determination unit approximation coefficients and refinement block relative basal values ​​of power, whose input is connected to the output error detection unit and output - connected to a second input of the determination of the relative values ​​of voltage and power. 2 yl.