“DESIGN AND FABRICATION OF SOLID-STATE ON-LOAD TAP CHANGER”
Date
2023-04
Authors
Neupane, Kismat
Niraula, Kshitij
Chaudary, Mahesh
Ray, Nikesh
Journal Title
Journal ISSN
Volume Title
Publisher
I.O.E. Pulchowk Campus
Abstract
In the recent time, the continuous, uninterrupted and fast power supply along with high efficiency is one of the major concerns in the field of power system. It is necessary that our system should react quick to increase and decrease in heavy as well as light load. The on-load tap changers have become one of the important parts of transformer in order to regulate the constant output voltage without disconnecting the load. The purpose of this project is to design the most convenient type of tap-changing system that omits all the disadvantage of the present type of tap changing. It focuses on how current tap changing system is working, what are the problems associated with it and hence how can we replace them by using modern tools, devices, systems and methods. Earlier mechanical type on-load tap changers were in use which had major shortcomings like arcing, slow response time, high maintenance and service costs. And these get even worse in the case distribution transformers which are manually operated that too after disconnection of load and hence do not provide dynamic control over output voltage and require constant human intervention. Due to these flaws of the mechanical type, solid-state (electronic) tap changers were introduced.
Description
This project introduces the most efficient method of tap-changing system by replacing old, bulky, manually operating and late reacting system of tap-changing. The newly introduced system is easy in designing, small in size, arc free, quick responsive, automatic, easy to handle and economical for investing, operating and maintaining. Thus, in this report implementation of such EOLTC is presented with micro- controller-based control strategy providing higher degree of flexibility in modifying the control algorithms.
Keywords
Tap Changer,, EOLTC,, FABRICATION