Abstract: The invention relates to a method and device for fiber optic temperature measurement. The invention also relates to a multimode quartz glass fiber with nanocomposite (NK) containing a polymer and quantum dots (QDs) and its manufacture. These are based on temperature-dependent emission of quantum dots on the surface of optical fibers.

Abstract: A sensing device (10) for a high voltage disconnecting switch (20). The sensing device (10) comprises: a first optical fiber (110) configured to receive light from an optical source (100) and configured to guide the light; an optical collimator (120) coupled to the first optical fiber (110) to receive the light guided in the first optical fiber (110) and configured to collimate the light into a collimated light beam; a bendable optical component (130) coupled to the optical collimator (120) to receive the collimated light beam and configured to guide the collimated light beam, wherein the bendable optical component (130) is configured and arranged to bend depending on a switching state of the high voltage disconnecting switch (20), thereby influencing the collimated light beam; and a deriving unit (160) configured to derive information about the switching state of the high voltage disconnecting switch (20) based on the collimated light beam.

Abstract: The present disclosure relates to a system for determining a position of a movable arm of a high voltage disconnecting switch. The system comprises a high voltage disconnecting switch with a movable arm for opening and closing the high voltage disconnecting switch and a time of flight sensor configured to determine a distance value indicating a distance between the time of flight sensor and the movable arm. The system further comprises a control device configured to determine, based on the distance value, whether the high voltage disconnecting switch is in an open state or in a closed state. Further, a method for determining a position of a movable arm of a high voltage disconnecting switch is provided.

Abstract: The invention relates to a system and a method for monitoring the state of at least one over voltage protection component. The system has a transmission unit and a connection assembly coupled to the transmission unit. The system additionally has at least one measuring assembly coupled to the connection assembly. The at least one measuring assembly is designed to be arranged in at least one over voltage protection component. The system additionally has an analysis unit coupled to the at least one measuring assembly.

Abstract: The invention relates to a method and device for fiber optic temperature measurement. The invention also relates to a multimode quartz glass fiber with nanocomposite (NK) containing a polymer and quantum dots (QDs) and its manufacture. These are based on temperature-dependent emission of quantum dots on the surface of optical fibers.