Evaluation and performance analysis of electric spring with critical and non-critical loads

Abstract

a voltage control technique to smoothly migrate power production through fossil fuels to renewable energy sources in existing power grid is a problem for researchers, due to the intermittent nature of the latter. Electric spring is a novel concept which provides input side voltage control management by using “Hook’s Law”. This paper aims to examine operating principles of electric spring with inductive and capacitive mode and its performance analysis with impedance variations of non-critical and critical loads. Through investigation in this paper it is found that the ES performance depends on the impedance type of non-critical load instead of critical load impedance type. The paper also studies effect of ES with RES when included in the system and its behavior on under and over voltage conditions, using theoretical aspects with phasor diagrams and explanations. Effect of changes in impedance type of critical and non-critical loads are studied and validated by MATLAB simulations. The results are discussed and conclusions are drawn after analyzing the performance of the ES.