This paper presents a new nondestructive testing method. The conductive material being tested moves in a time constant magnetic field. Due to the movement the induced currents in the conductor generate a secondary magnetic field. When the eddy current flow pattern is disturbed by the existence of defects, variations of the magnetic field occur and information about the defects can be assessed by measuring the magnetic field.

This paper analyzes the possibility of utilizing the measurement results made by smartmeters to decrease the number of customers affected by prolonged outages so increasing smart grid reliability. For this scope this paper proposes a continuous monitoring of system impedance so that it would be possible to detect the progressive degradation of some system component and to assert its localization with certain accuracy. The approach is based on theory developed for fault location and theory of synchrophasors. Some experimental results, obtained with the presented approach are reported.

A metrological AFM is designed to establish a traceable standard with nanometer uncertainty. The principle and design of the instrument is introduced in this paper. The displacement of the sample is traced to the SI unit by interferometers. The metrological AFM is applied to step height and line width measurement. The results are compared with optical instrument and profilometers. The metrological AFM participates step height international comparison and the result shows an uncertainty less than 2 nm.

This paper focused to determination of Voltage dependence of Precision High Voltage divider and Self Heating of HV resistance. High Voltage resistive divider is a Primary standard of DC High Voltage measurements. The traceability of HV measurements is directly related to divider’s traceability, to scale the voltage from Josephson voltage standard, which is primary standard of DC voltage. The change in effective resistance ratio with Voltage depends upon self heating of resistance, electrostatic stress and leakage current. The design of divider and Precision source minimise the above factor which is also discussed in this paper. The relative ratio change due to High Voltage of HV divider in both positive and negative Polarity is about 0.1 ppm / kV.

The development trends of electrical networks clearly indicate that grids of the future will include more and more smart components. In the new smart grids, smart components fulfill measurement and control tasks: in this scenario, not only the simple energy consumption, but also other parameters have to be measured. Among these parameters certainly there is the quality of energy. Therefore new smart meters have to face the issue to measure energy consumption and energy quality over a wide frequency range. Therefore, in order to make possible the implementation of a smart meter with standard commercial components, in this paper a prototype of voltage and current transducers for the Arduino microcontroller board is presented. Its design, simulation and experimental characterization are shown.