Design and Simulation of Piezoelectric Folded Cantilever Driven Electric Field Sensor

The security of smart grid highly relies on the designed, which is based on charge induced principle and mutual accurate electrical quantity detection. In this paper, an electric shielding electrodes structure. The electric field distribution and field sensor with piezoelectric folded cantilever actuators was induced charge for sensing units, driving capability of piezoelectric folded cantilever and vibration modal analysis were implemented using the finite element analysis method with COMSOL Multiphysics software. The simulation results show that the resonance frequency of the vibration structure is 5930.5 Hz. At that operation frequency, the output current is up to 3.45 nA and 0.39 nA for a 100 kV/m direct current electric field under a distributed excitation of 10 V and 1 V, respectively.