MONITORING APPARATUS AND METHOD FOR MONITORING AN AC VOLTAGE SOURCE DC-DECOUPLED FROM A REFERENCE POTENTIAL

• Main Authors: NEIC AUREL-VASILE, KOVATCHEV EMIL
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The invention relates to a method for monitoring an AC voltage source (12) which is DC-decoupled from a reference potential (15) and generates an AC voltage (USG) between two AC voltage lines (13, 14). The invention provides for each of the AC voltage lines (13, 14) to be coupled to the reference potential (15) via a particular capacitive voltage divider (17, 18) and for a particular partial voltage signal (Vmeas_1,Vmeas_2) to be tapped off at the voltage dividers (17, 18) and to be used to generate at least one root mean square signal (rms (Vd), rms (Vs)) and for a check to be carried out inorder to determine whether the particular root mean square signal (rms (Vd), rms (Vs)) satisfies a predetermined trigger criterion and for a fault signal (25) to be generated if the trigger criterion(Z0) is satisfied. 本发明涉及种用于监测与参考电势(15)DC解耦并在两个AC电压线路(13，14)之间生成AC电压(U)的AC电压源(12)的方法。本发明规定所述AC电压线路(13，14)中的每个借助于对应电容分压器(17，18)而耦合至所述参考电势(15)，并且规定在所述分压器(17，18)处分接对应分量电压信号(V，V)，并且规定根据所述分量电压信号生成至少个均方根值信号(rms(Vd)，rms(Vs))，并且规定执行检查以