专利名称：METHOD AND DEVICE FOR MEASURING AN
ELECTRIC VOLTAGE USING THE POCKELSEFFECT
发明人：KRAEMMER, PETER申请号：EP99963128.6申请日：19990712公开号：EP1099117B1公开日：20020529
摘要：The invention relates to a method for measuring an electric voltage (U) whileutilizing the longitudinal and the transversal Pockels effects. According to the invention,at least one first and at least one second linear-polarized light beam (10 or 12a, b) isinjected into a Pockels crystal (2). Said light beams spread out perpendicular to oneanother in the Pockels crystal (2). The length of the light path of the first light beam (10)is measured in the Pockels crystal (2) such that, within a predetermined measurementrange, a one to one relationship exists between the first intensity, said intensity beingmeasured behind a first analyzer (26), and the voltage (U). This is used for selecting adefinite measurement value for the voltage (U) from the second intensity which ismeasured behind a second analyzer (22a, b) and which is periodically dependent on thevoltage (U) within the measurement range. It is thus possible to precisely measure highvoltages also when high direct voltage portions are present.
申请人：SIEMENS AKTIENGESELLSCHAFT,SIEMENS AG,SIEMENS AKTIENGESELLSCHAFT
地址：DE
国籍：DE
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