Novel approach for measurement of high current by piezoelectric technology

The accurate and reliable measurement of the system parameter is very essential for safe and stable operation of an electric power system. In particular, for measurement of current and voltage. Conventionally this is achieved in high voltage systems by expensive and bulky iron-core transformers. Research efforts are in progress since many years for viable alternatives to instrument transformers, focusing mainly on reduction of cost, improvement in safety measures and accuracy of measurement. This paper proposes an alternative method for measurement of high current using piezoelectric transducer. The performance of designed system is verified through simulation on MATLAB/SIMULINK platform. A prototype model was developed in the laboratory to verify simulations results. Successful results in this field have opened the way to propose alternatives for measurement of high current.