Controlled switching of power transformer and shunt reactors for minimization of switching transients: a review

A Kumar, R Perveen, U Parikh - Journal of The Institution of Engineers …, 2021 - Springer
Switching transients arises due to random switching of power apparatus results in
degradation of thermal and dielectric health of equipment and system as a whole. Controlled …

Evaluation of controlled energisation of an unloaded power transformer for minimising the level of inrush current and transient voltage distortion using PIR‐CBs

KA Bhatt, BR Bhalja, UB Parikh - IET Generation, Transmission …, 2018 - Wiley Online Library
This study presents an evaluation of the application of the controlled switching device for
reducing the level of inrush current and transient voltage dip (TVD) during energisation of an …

Study on Improving the Operating Lifespan of AC Filter Arresters in Converter Station Based on the Degradation Characteristics of ZnO Varistor under Unipolar and …

J Zhang, Y Han, F Yu, W Huang, L Li… - … on Power Delivery, 2024 - ieeexplore.ieee.org
The degradation of AC filter (ACF) arresters in converter stations can be accelerated by the
frequent occurrence of unipolar polarity impulse currents during energization of ACFs …

Energization transient suppression of 750 kV AC filters using a preinsertion resistor circuit breaker with a controlled switching device

X Chen, C He, J Deng, X Zhu, G Zhang… - … on Power Delivery, 2021 - ieeexplore.ieee.org
Different from typical circuit breakers, breakers used to switch AC filters in convertor stations
have to operate frequently according to the real-time operation mode and daily load …

Pre‐insertion resistors temperature prediction based on improved WOA‐SVR

H Dai, S Mo, H Wang, N Yin, S Fan… - … Science, Measurement & …, 2024 - Wiley Online Library
The pre‐insertion resistors (PIR) within high‐voltage circuit breakers are critical components
and warm up by generating Joule heat when an electric current flows through them …

Real-time Implementation of Controlled Energization of Coupled Power Transformer using Multi-Stepped PIR: Part-2

KA Bhatt, BR Bhalja, UL Makwana, FA Macwan… - Journal of The Institution …, 2024 - Springer
In this era, smart grid technologies enable efficient and reliable switching of the power
transformer to optimize energy flow and improve overall system performance. Hence, in …

Effect of shunt reactor rating on the switching transients overvoltage in high voltage system

MA Al-Tak, MF Ain, OS Al-Yozbaky… - Bulletin of Electrical …, 2024 - beei.org
This paper includes a computer simulation of switching transient overvoltages during the
disconnecting of shunt reactors (SR). Based on the results of the transient simulations, two …

[PDF][PDF] A novel method of overvoltage suppression due to de-energization of shunt reactor in high voltage system

MA Al-Tak, MF bin Ain, OS Al-Yozbaky… - International Journal of …, 2023 - academia.edu
Substations usually employ shunt reactors to reduce the reactive power of systems. Due to
current chopping when the shunt reactor is shut off, a high frequency and amplitude …

Suppression of very fast transient over voltages in gas insulated substations using RC filters

RD Rao, MS Kalavathi - AIP Conference Proceedings, 2022 - pubs.aip.org
This work provides the RC filter-based mitigation strategy in Gas Insulated Switch gear
power stations with Very rapid intermittent over voltage. In the field of electricity transfer and …

Residual flux impact in controlled switching of HVDC converter transformer

A Kumar, I Kaur, U Parikh - International Journal of Emerging Electric …, 2022 - degruyter.com
Converter transformers are an interface point of HVDC frameworks and are basic hardware
from activity and reliability view point. Converter transformers are turned off intentionally …