METHOD OF DIELECTRIC LOSSES ANGLE MEASUREMENT Russian patent published in 2009 - IPC G01R19/10 

FIELD: electricity; physics.

SUBSTANCE: method of dielectric losses angle measurement includes filling of measuring capacitor clearance with the observable dielectric and sinusoidal voltage supply to the capacitor. In addition, alternating electrical voltage V is generated. The above mentioned voltage is proportional to the product of capacitor voltage by the capacitor current. The voltage V is converted into two bipolar voltages V_max and V_min. One voltage value, for example, V_max is equal to the peak value of the positive component, while the other value V_min is equal to the peak value of the negative component of V voltage. Voltages V_max and V_min are converted into two direct voltages V₁ and V₂. One voltage value V₁ is equal to the sum of the absolute V_max and V_min values. On the contrary, the other value V₂ is equal to the difference of the above absolute values. The target value of losses angle sine is derived from the formula Besides, the unit value (or multiple of a unit) for voltage V₁ is sought while controlling the produced V voltage. In addition, sinδ value is defined directly from voltmeter indications by measuring V₂ voltage.

EFFECT: simple process and increased accuracy of dielectric losses angle measurements within wide frequency interval, possibility of measurements automation.

3 cl, 2 dwg