OPTICAL VOLTAGE SENSOR WITH THE POSSIBILITY OF PASSIVE TEMPERATURE COMPENSATION Russian patent published in 2023 - IPC G01R15/24 G02B6/12 

FIELD: measuring electrical and magnetic quantities.

SUBSTANCE: optical electrical voltage sensor contains two or more sensitive elements placed in the same temperature conditions, at least one of which is connected to an electrical voltage source, and at least one is not connected to an electrical voltage source, optically connected to each other. At the same time, the optical sensor additionally contains an optical splitter/adder configured to divide the power of optical radiation between the sensitive elements of the sensor and simultaneously receive radiation on all sensitive elements of the sensor, followed by summing the changed signals in the splitter/adder, from the output of which the resulting optical signal containing information about the voltage applied to the electrical connector, as well as information about the temperature for each group of sensitive elements inside the housing, falls on the optical fibre connector.

EFFECT: reduced measurement error.

5 cl, 1 dwg