Advance control scheme for correction of power factor and voltage stability by using electric spring

Abstract

A novel smart technology has been introduced in the demand side management which can be used in real time i.e., electric spring. This electric spring provides voltage, power stability and found to be useful in maintaining the voltage supply in spite of the fluctuations caused by the intermediate nature of renewable energy sources and implemented in conjunction with non-critical loads and critical loads like electric heaters, refrigerators, laptops, building security systems. To get better power factor correction, voltage support, power balance in loads, using the properties of PLL through single phase d-q transformation scheme is developed. In order to improve power-factor and voltage stability, fuzzy control scheme is proposed in this paper. By using Fuzzification control scheme, power factor at loads, voltage stability of the system can be achieved. The integration of electric spring in sequence to non-critical loads forms a smart load. Thereby alteration of active power and reactive power is done automatically near non-critical loads. Simulation results are carried out for ES based on PLL control by using fuzzy logic controller and their results are analyzed.